JP7618078B2 - Adhesive tape application device - Google Patents

Description

The present invention relates to an adhesive tape application device.

In the manufacturing process of flat panel displays such as liquid crystal displays and organic electroluminescence displays, it is necessary to mount electronic components on the substrate, which is the object to which they are to be attached. This mounting is carried out, for example, by temporarily bonding the electronic components to the terminals provided on the upper peripheral surface of the substrate using adhesive tape, and then applying heat and pressure to permanently bond them.

The electronic components to be attached are, for example, IC chips, TCP (Tape Carrier Package), COF (Chip On Film), etc. 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 made of ACF (Anisotropic Conductive Film) that is several millimeters wide and several tens of microns thick. ACF is an anisotropic conductive film made of resin containing metal particles.

In this way, the thin adhesive tape is configured as a tape-like member attached to a release tape. The tape-like member is fed from a reel, and after the adhesive tape is pressed onto the substrate, only the release tape is peeled off and discharged.

When the adhesive tape of the tape-shaped member runs out due to the application work, it is manually replaced with a new tape-shaped member. Specifically, the operator performs the following operations. First, the reel that has run out of adhesive tape is replaced with an unused reel. A new tape-shaped member is pulled out from the replaced unused reel. A specified length of adhesive tape is peeled off from the tip of the pulled out tape-shaped member and set in the application device. The adhesive tape at the tip is peeled off in this way to prevent the tape-shaped member from being poorly transported due to the adhesive tape adhering to the transport rollers that transport the tape-shaped member (release tape) by pinching it from both sides on the downstream side of the application work position in the transport direction.

JP 2004-186387 A

As mentioned above, when the tape-shaped material is replaced, a head alignment operation is performed to align the leading end (hereinafter simply referred to as the "tip") of the adhesive tape, which is the break in the tape, to a specified position in order to ensure the accuracy of application to the substrate. In the past, this head alignment operation involved an operator visually aligning the tape-shaped material to a specified position, for example the application work position, while feeding it. Due to the configuration of the device, it was sometimes difficult to visually confirm the tape-shaped material from the adhesive tape side, and it was difficult to align it to the specified position, such as by feeding the tape-shaped material too far.

The present invention was made to solve the above problems, and its purpose is to provide an adhesive tape application device that can automatically position the beginning of the adhesive tape.

The adhesive tape application device of the present invention comprises a supply unit which supplies a tape-shaped member having an adhesive tape adhered to a release tape; an application unit which adheres the application surface of the adhesive tape opposite the release tape to an object to be applied; a transport unit which sends the tape-shaped member from the supply unit to the application unit; an imaging unit which is arranged on the adhesive tape side of the tape-shaped member and which images the tape-shaped member positioned at a reference application position set with respect to the application unit ; and a judgment unit which judges whether the state of the cut in the adhesive tape is good or bad based on the image of the tape-shaped member obtained by the imaging unit, wherein the judgment unit judges the presence or absence of the adhesive tape within a plurality of areas set along the width direction of the adhesive tape before and after the reference application position, and judges whether the state of the cut in the adhesive tape is good or bad based on the judgment result .

The apparatus may include a cutting section having a cutter provided between the supply section and the adhering section, which cuts the adhesive tape of the tape-shaped member to form a half-cut line that serves as the cut, the transport section feeds the tape-shaped member so that the half-cut line is located at the adhering reference position, the imaging section images the tape-shaped member including the half-cut line, and the judging section detects the half-cut line from the image obtained by the imaging section and judges whether the shape of the cut surface of the half-cut line is good or bad.

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

A transport control unit may be provided that calculates the distance between the half-cut line and the reference attachment position, and when the determination unit determines that the half-cut line is outside the allowable range, the transport unit may feed the tape-shaped member so that the half-cut line is positioned at the reference attachment position based on the distance calculated by the transport control unit.

The adhering unit adheres the adhesive tape downstream of the half-cut line to the object to be adhered, the imaging unit photographs the tape-like member after adhering by the adhering unit, and the judging unit judges the presence or absence of the adhesive tape in a plurality of areas set along the width direction of the adhesive tape before and after the adhering reference position, and may judge whether the adhesive tape is properly positioned based on the result of this judgment.

The determination unit may convert the image into a grayscale image and detect the gap.

The illumination unit may be provided with an optical axis inclined at an angle of 60° to 85° with respect to the perpendicular direction of the adhesive surface of the adhesive tape located at the reference application position.

The illumination unit may emit white or green light.

The adhesive tape may be an anisotropic conductive film.

According to the present invention, it is possible to obtain an adhesive tape application device that can automatically position the beginning of the adhesive tape.

1 is a schematic configuration diagram of a bonding device according to an embodiment; FIG. 2 is a functional block diagram of a control unit. 5 is a flowchart showing an example of a leading edge alignment operation of the adhesive tape bonding device according to the embodiment. 1A is a diagram showing the feeding of a tape-shaped member; FIG. 1B is a diagram for explaining the leading portion of an adhesive tape; FIG. 1C is a diagram showing the formation of a half-cut line; FIG. 1D is a diagram for explaining the pass/fail judgment of the position of the half-cut line; FIG. 1E is a diagram for explaining the discarding of an adhesive tape; FIG. 1F is a diagram showing a state in which it is judged that there is adhesive tape downstream of the application reference position, and it is judged as defective; FIG. 1F is a diagram showing a state in which it is judged that there is no adhesive tape upstream of the application reference position, and it is judged as defective; FIG. 1G is a diagram showing a state in which it is judged that there is no adhesive tape downstream of the application reference position, and that there is adhesive tape upstream of the application reference position, and it is judged as good. 1A is a cross-sectional view showing how a tape-shaped material is photographed in a bonding device of a comparative example, and FIG. 1B is an image of the tape-shaped material obtained by the bonding device of the comparative example. 1A is a cross-sectional view showing how a tape-shaped material is photographed by the bonding device of the embodiment, and FIG. 1B is an image of the tape-shaped material obtained by the bonding device of the embodiment; 4 shows the inclination angle θ of the optical axis of the lighting unit relative to the perpendicular line of the tape-shaped member, and the detection results for the break in the adhesive tape at that angle. 1A is a schematic diagram showing a feed correction of the tape-shaped material when the half-cut line is shifted in front of the adhesion reference position, and FIG. 1B is a schematic diagram showing a feed correction of the tape-shaped material when the half-cut line is shifted beyond the adhesion reference position. 5 is a flowchart showing an example of an operation of the adhesive tape adhering device to adhere to a substrate. 1A and 1B are diagrams showing the adhering operation of an adhering device according to an embodiment, in which (a) shows a state in which the adhesive tape has been exposed and the substrate has been set, (b) shows a state in which the tape has been half-cut, (c) shows a state in which the tape-shaped material has been fed, and (d) shows a state in which the adhesive tape has been adhered to the substrate and the release tape has been peeled off. 13 is a schematic diagram for explaining an arrangement of an illumination unit of a bonding device according to another embodiment. FIG.

[Embodiment]
An example of an embodiment of the present invention (hereinafter referred to as an embodiment) will be specifically described with reference to the drawings. As shown in FIG. 1, the tape-shaped member 2 used in this embodiment is, for example, an adhesive tape 21 attached to a release tape 22. The adhesive tape 21 is, for example, an anisotropic conductive film (ACF). The release tape 22 is a tape that can be peeled off from the adhesive tape 21, and is formed of, for example, a resin film such as polyimide. The width of the tape-shaped member 2 that is generally used is about 0.5 to 3.5 mm.

[composition]
1 is a schematic diagram of a bonding device 1 according to an embodiment. The bonding device 1 is a device for bonding an adhesive tape 21 of a tape-shaped member 2 to an object to be bonded. The object to be bonded is, for example, a discard plate 112 described below, or a substrate serving as a component of a flat panel display.

As shown in FIG. 1, the adhesion device 1 includes an adhesion unit 11, a supply unit 12, a recovery unit 13, a transport unit 14, a peeling unit 15, a cutting unit 16, an illumination unit 17, an imaging unit 18, and a control unit 19.

[Adhesive part]
The adhering section 11 adheres the adhesive tape 21 of the tape-shaped member 2 to an object to be adhered. The adhering section 11 has a pressure head 110 and a stage member 111.

The pressure head 110 heats and presses the tape-shaped member 2 against the object to be affixed by moving up and down using a lifting device (not shown). For this purpose, the pressure head 110 is provided with a heater (not shown), and the contact surface with the tape-shaped member 2 is heated to a predetermined temperature. Furthermore, a buffer member 110a is provided on the contact surface of the pressure head 110 with the tape-shaped member 2. This 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 pressure head 110. That is, the surface of the tape-shaped member 2 opposite the release tape 22 of the adhesive tape 21 becomes the surface to be affixed to the object to be affixed.

The stage member 111 is a member that supports the object to be attached from below when the pressure head 110 heats and presses the tape-like member 2 onto the object to be attached. The stage member 111 has, on its upper surface, a support surface 111a that is a flat surface that supports the object to be attached.

As described above, the object to be attached that is placed on the stage member 111 is the waste plate 112 or the substrate that will become the product. For example, the unnecessary portion at the beginning of the adhesive tape 21 is attached to the waste plate 112. This waste plate 112 is, for example, a metal plate, has the same size as the substrate, and is placed on the support surface 111a of the stage member 111. Note that the waste plate 112 may be made of cloth tape or a plastic plate instead of a metal plate. Alternatively, cloth tape or a plastic plate may be attached to the waste plate 112 so that it can be replaced.

A reference application position 10 is set on the transport path along which the tape-shaped member 2 is transported to the application work position where the adhesive tape 21 is applied in the application section 11. The reference application position 10 is a reference position at which a slit 20 in the adhesive tape 21 in the tape-shaped member 2 is aligned, and in this case is the position of the upstream end of the pressure head 110 in the transport direction of the tape-shaped member 2. The slit 20 in the adhesive tape 21 is, for example, the leading portion of the adhesive tape 21 in the tape-shaped member 2, a half-cut line 20b (described later) formed by the cutting section 16.

[Supply section]
The supply unit 12 supplies the tape-shaped material 2 to the bonding unit 11. The supply unit 12 has a supply reel 120, a tension mechanism 121, and a path roller 122. The supply reel 120 is a reel on which the tape-shaped material 2 is wound and which feeds out the tape-shaped material 2 by rotating.

The tension mechanism 121 applies tension to the tape-like material 2. The tension mechanism 121 is a pair of rollers arranged at a distance above and below to guide the movement of the tape-like material 2 pulled out from the supply reel 120. One roller 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 a lifting mechanism not shown. In other words, it moves in the direction of the black arrow in the figure.

The path roller 122 is a roller that changes the conveying direction of the tape-shaped material 2 from the tension mechanism 121 and sends it out toward the cutting section 16.

[Collection Department]
The recovery unit 13 recovers the release tape 22 peeled off from the adhesive tape 21 adhered to the adhesion target in the application unit 11. The recovery unit 13 has a recovery reel 130 and a path roller 131.

The recovery reel 130 is a reel that winds up and recovers the release tape 22. The path roller 131 is a roller that changes the transport direction of the release tape 22 from the attachment unit 11 side and sends it out toward the recovery reel 130.

[Transport section]
The transport unit 14 is disposed between the adhering unit 11 and the recovery unit 13, and transports the tape-shaped material 2 from the supply unit 12 to the recovery unit 13 via the adhering unit 11. The transport unit 14 has a pair of feed rollers 140 and a feed motor (not shown). The pair of feed rollers 140 sandwich the release tape 22, and move the tape-shaped material 2 from the supply reel 120 side to the recovery reel 130 side by rotation of the rollers. The feed motor is a drive source that rotates the feed roller 140. The feed motor has a rotating shaft connected to the feed roller 140, and the rotation shaft rotates about the axis by driving the motor, thereby rotating the feed roller 140 about the rotation axis.

The path along which the tape-shaped material 2 sent out from the supply reel 120 passes through the two rollers 121a and 121b of the tension mechanism 121, the path roller 122, and the path roller 131 to the recovery reel 130 is the transport path of the tape-shaped material 2. To explain the positional relationship of each part, the supply unit 12 side is also referred to as the upstream side of the tape-shaped material 2, and the recovery unit 13 side is also referred to as the downstream side of the tape-shaped material 2. The downstream side of the tape-shaped material 2 with respect to the application reference position 10 is also referred to as the front, and the upstream side of the tape-shaped material 2 is also referred to as the rear.

[Peeling part]
The peeling unit 15 peels off the release tape 22 from the adhesive tape 21 attached to the attachment object. The peeling unit 15 has peeling bars 150 and 151. The peeling bars 150 and 151 are, for example, round bars, and are members that come into contact with the release tape 22. The peeling bar 150 comes into contact with the surface of the release tape 22, i.e., the surface on the adhesive tape 21 side, and the peeling bar 151 comes into contact with the back surface of the release tape 22. The peeling bars 150 and 151 are moved horizontally from the downstream side to the upstream side of the attachment unit 11 (in the direction of the dotted arrow in FIG. 1) with the release tape 22 in contact therewith by a moving mechanism (not shown), as shown in FIG. 1, thereby peeling off the release tape 22 from the adhesive tape 21 pressed against the attachment object.

[Cutting section]
The cutting unit 16 cuts the adhesive tape 21 in the tape-shaped member 2. This cutting unit 16 may further make an incision in the release tape 22 to the extent that it does not cut the release tape 22. Cutting the adhesive tape 21 in this manner is hereinafter referred to as a half cut, and the line formed in the adhesive tape 21 by the cutting unit 16 is referred to as a half cut line 20b.

The cutting section 16 is provided between the supply section 12 and the affixing section 11, and has a cutter 160 and a backup member 161. The cutter 160 is a member that contacts and cuts the adhesive tape 21, and is provided between the supply section 12 and the affixing section 11. The cutter 160 has a blade at its tip that moves toward and away from the backup member 161 by a lifting mechanism (not shown). The blade at the tip of the cutter 160 extends in the width direction of the tape-like member 2. The backup member 161 is a block having a rectangular parallelepiped shape. The backup member 161 has a flat surface 161a on the lower surface of the block that sandwiches the tape-like member 2 between the cutter 160 and the backup member 161 and contacts the release tape 22 in the horizontal direction. In this embodiment, the position of the cutting section 16 is set so that the distance between the cutter 160 and the affixing reference position 10 is shorter than the length of the adhesive tape 21 to be affixed to the substrate.

[Lighting section]
The illumination unit 17 is disposed on the adhesive tape 21 side of the tape-shaped material 2, in the vicinity of the reference application position 10. Specifically, the illumination unit 17 is disposed below the tape-shaped material 2, and illuminates the tape-shaped material 2 from the adhesive tape 21 side.

The illumination unit 17 is provided such that its optical axis is directed toward the attachment reference position 10 and is oblique to the perpendicular line of the tape-shaped member 2. This perpendicular line is a straight line perpendicular to the surface of the tape-shaped member 2, more specifically, the above-mentioned attachment surface of the adhesive tape 21 in the tape-shaped member 2 positioned at the attachment reference position 10. When the tape-shaped member 2 is transported horizontally to the attachment reference position 10, the perpendicular line may be a perpendicular line to the horizontal direction. It is preferable that the optical axis of the illumination unit 17 is inclined by 60° to 85° with respect to the perpendicular direction of the attachment surface of the adhesive tape 21 positioned at the attachment reference position 10. The illumination unit 17 may be provided on the upstream side of the tape-shaped member 2 or on the downstream side of the tape-shaped member 2. For example, an LED that irradiates visible light can be used as the illumination unit 17, and among them, it is preferable to use an LED that emits white light or green light. In addition, the optical axis of the illumination unit 17 being directed toward the attachment reference position 10 means that the illumination unit 17 is arranged toward the attachment reference position 10, and the optical axis does not have to completely intersect with the attachment reference position 10 in the position shown in FIG. 1.

[Image capture unit]
The imaging unit 18 images the tape-shaped member 2 at the attachment reference position 10. The imaging unit 18 is, for example, a camera. The imaging unit 18 is arranged on the adhesive tape 21 side of the tape-shaped member 2 with its optical axis aligned with the attachment reference position 10, and images the tape-shaped member 2 in a state in which the tape-shaped member 2 is illuminated from the adhesive tape 21 side by the illumination unit 17. Specifically, the imaging unit 18 is arranged below the tape-shaped member 2 and directly below the attachment reference position 10, and its optical axis is perpendicular to the tape-shaped member 2. That is, the attachment reference position 10 is included in the imaging range of the imaging unit 18, and when a slit 20 in the adhesive tape 21 enters the imaging range due to the feeding of the tape-shaped member 2, the imaging unit 18 images the tape-shaped member 2 including the slit 20. Note that the optical axis of the imaging unit 18 does not have to be perpendicular to the tape-shaped member 2. For example, the optical axis of the imaging unit 18 may be obliquely intersecting at about 15° with respect to the perpendicular to the tape-shaped material 2 when viewed from the transport direction of the tape-shaped material 2. It is not necessary for the optical axis of the imaging unit 18 to be perfectly aligned with the attachment reference position 10 either, as long as a desired portion of the tape-shaped material 2 positioned at the attachment reference position 10 falls within the imaging range.

[Control unit]
The control unit 19 is a control device that controls each part of the adhesion device 1. The control unit 19 can be configured, for example, by a dedicated electronic circuit or a computer that operates with a predetermined program. In other words, the control contents for the adhesion unit 11, tension mechanism 121, transport unit 14, peeling unit 15, cutting unit 16, illumination unit 17, imaging unit 18, etc. are programmed and executed by a processing device such as a PLC or CPU.

Figure 2 is a functional block diagram of the control unit 19. As shown in Figure 2, the control unit 19 has an adhesion 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 transport control unit 197.

The adhesion control unit 190 controls the heater and lifting device provided in the adhesion unit 11, causes the heater to heat the pressure head 110, and causes the lifting device to lift and lower the heated pressure head 110. The tension mechanism control unit 191 controls the lifting mechanism provided in the tension mechanism 121, and applies tension to the tape-like material 2 by moving the movable roller 121b up and down.

The peeling control unit 192 controls the movement mechanism provided in the peeling unit 15, and horizontally moves the peeling bars 150 and 151 to peel the adhesive tape 21 adhered to the discard plate 112 from the release tape 22. The cutting control unit 193 controls the lifting mechanism provided in the cutting unit 16 to raise and lower the cutter 160.

The lighting control unit 194 controls the turning on and off of the lighting unit 17. The imaging control unit 195 controls the imaging of the imaging unit 18.

The determination unit 196 determines the quality of the state of the cut surface, the position of the slit 20 in the adhesive tape 21, and the like, based on the image of the tape-shaped member 2 obtained by the imaging unit 18. The determination unit 196 converts the image of the tape-shaped member 2 into a grayscale image and detects the position of the slit 20 in the adhesive tape 21. The determination unit 196 then determines whether the detected slit 20 is located within the allowable range of the attachment reference position 10. If the slit 20 is within the allowable range, it is determined to be good, and if the slit 20 is outside the allowable range, it is determined to be bad. Note that grayscaling refers to, for example, converting the brightness of an image into a multi-level pixel value according to the brightness, and is typically a conversion using 256 gradations from pixel value 0 (black) to pixel value 255 (white).

The determination unit 196 detects the half-cut line 20b as the cut 20 based on the image of the tape-shaped member 2 obtained by the imaging unit 18, and determines whether the shape of the cut surface is good or bad. The shape of the cut surface of the half-cut line 20b is the shape of the incision made by the cutter 160 when the tape-shaped member 2 is viewed from the adhesive tape 21 side. The half-cut line 20b is determined to be good, for example, when it is detected as a straight line with a large (bright) pixel value in the width direction of the tape-shaped member 2, and is determined to be bad when the part with a large pixel value is not straight but oblique, or has irregularities such as meandering or chipping.

The determination unit 196 also determines whether the adhesive tape 21 is properly aligned based on the presence or absence of the adhesive tape 21 in the regions before and after the attachment reference position 10. Aligning the adhesive tape 21 refers to setting a new supply reel 120 and aligning the half-cut line 20b formed at the tip of the leading adhesive tape 21 that can be attached to the product substrate within a predetermined range including the attachment reference position 10, and the predetermined range is a range within which the half-cut line 20b is allowed to be aligned with the attachment reference position 10. The determination unit 196 may further divide the regions before and after the attachment reference position 10 into multiple small regions to determine the presence or absence of the adhesive tape 21.

When the determining unit 196 determines that the position of the cut 20 is defective, the transport control unit 197 calculates the distance (deviation) between the cut 20 in the adhesive tape 21 and the attachment reference position 10. That is, when the position of the cut 20 is defective, the position of the cut 20 deviates from the attachment reference position 10 by more than the allowable range, and therefore it is necessary to correct the position of the tape-shaped material 2 so that the position of the cut 20 is within the allowable range. Therefore, the transport control unit 197 calculates the distance between the attachment reference position 10 and the position of the cut 20 based on the image captured by the imaging unit 18, and generates a control signal for driving the feed motor based on the calculated distance. That is, this control signal is a signal for feeding the tape-shaped material 2 by the calculated distance so that the half-cut line 20b is at the attachment reference position 10, and is output to the feed motor.

[Action]
The operation of the adhesive tape adhering device 1 having the above-mentioned configuration will be described.

[Adhesive tape head positioning operation]
FIG. 3 is a flow chart showing an example of a leading edge alignment operation of the adhesive tape 21 of the adhesive tape adhering device 1 according to the embodiment.

As a premise, a new supply reel 120 is set in the supply section 12, the tape-shaped material 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 feed roller 140, and the path roller 131. In addition, the downstream side of the adhesive tape 21 in this tape-shaped material 2 is peeled off by the operator before being wound, and the leading portion 20a, which is the slit 20 of the adhesive tape 21, is located upstream of the imaging section 18, i.e., the application reference position 10. In other words, the adhesive tape 21 is peeled off downstream of the leading portion 20a, and the surface of the release tape 22 is exposed. The shape of the leading portion 20a of the adhesive tape 21 is arbitrary because it is peeled off by the operator. For example, the line may be parallel to the width direction of the tape-shaped material 2, or it may be a line that is inclined relative to the width direction of the tape-shaped material 2, or it may be a meandering line with peaks and valleys in the width direction of the tape-shaped material 2, or a line that is uneven.

In addition, it is assumed that a waste plate 112 is placed in advance on the support surface 111a of the stage member 111.

As shown in FIG. 3, the illumination control unit 194 turns on the illumination unit 17 to illuminate the tape-shaped material 2 including the application reference position 10 (step S01). As shown in FIG. 4(a), the transport unit 14 feeds the tape-shaped material 2 at a predetermined pitch (step S02), and the imaging unit 18 and the judgment unit 196 judge whether the position of the leading portion 20a (slit 20) of the adhesive tape 21 is good or bad (step S03). That is, when the tape-shaped material 2 is fed by the transport unit 14, the imaging unit 18 photographs the tape-shaped material 2 in an imaging range including the application reference position 10, and the judgment unit 196 converts the image obtained by the imaging unit 18 into a grayscale image, and as shown in FIG. 4(b), it judges whether the leading portion 20a of the adhesive tape 21 is included in the predetermined range R1 including the application reference position 10 from the difference in shade. The part with the adhesive tape 21 is dark, and the part without the adhesive tape 21 is bright, and the boundary between light and dark is the leading portion 20a. The specified range R1 is, for example, an inspection area set within the imaging range.

The feed pitch of the conveying unit 14 is equal to or shorter than the length of the tape-shaped material 2 in the conveying direction of the predetermined range R1. If the leading portion 20a is not detected by the determination unit 196 (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 leading portion 20a is detected by the determination unit 196 (YES in step S03), the tape-shaped material 2 is stopped at the position where the leading portion 20a is detected, and the cutting control unit 193 raises the cutter 160 to half-cut the tape-shaped material 2 (step S04), cutting the adhesive tape 21 to form a half-cut line 20b as the cut line 20 as shown in FIG. 4(c). Then, the transport unit 14 feeds the tape-shaped material 2 by the distance between the cutting unit 16 (cutter 160) and the attachment reference position 10 (step S05). Next, the imaging unit 18 photographs the tape-shaped material 2, and the determination unit 196 detects whether or not there is a half-cut line 20b (step S06). If the half-cut line 20b is not detected (NO in step S06), the process returns to step S04.

When the half-cut line 20b is detected (YES in step S06), the determination unit 196 determines whether the detected half-cut line 20b is within an allowable range including the attachment reference position 10, as shown in FIG. 4(d) (step S07). When the half-cut line 20b is not within the allowable range (NO in step S07), the feed correction of the tape-shaped material 2 is performed. That is, the conveyance control unit 197 calculates the distance between the half-cut line 20b and the attachment reference position 10 based on the position of the half-cut line 20b recognized within the predetermined range R1 and the position of the attachment reference position 10 (step S08), and the conveyance unit 14 conveys the tape-shaped material 2 by the calculated distance so that the half-cut line 20b comes to the attachment reference position 10 (step S09), and returns to step S07.

If the half-cut line 20b is within the allowable range (YES in step S07), the portion of the adhesive tape 21 from the leading portion 20a to the half-cut line 20b is located between the pressure head 110 and the discard plate 112. In this state, the preheated pressure head 110 presses down the tape-shaped member 2, and the unnecessary adhesive tape 21 downstream of the half-cut line 20b is discarded onto the discard plate 112 (step S10, see FIG. 4(e)). That is, the attachment control unit 190 lowers the preheated pressure head 110, attaches the unnecessary adhesive tape 21 from the leading portion 20a to the half-cut line 20b to the discard plate 112, and raises the pressure head 110. Thereafter, the peeling control unit 192 horizontally moves the peeling bars 150 and 151 toward the attachment unit 11, and peels off the release tape 22 from the adhesive tape 21 pressed against the discard plate 112 (step S11).

After the release tape 22 is peeled off, the image capturing unit 18 captures the tape-like member 2 (step S12). At this time, the tape-like member 2 is not fed, so the position of the slit 20 of the adhesive tape 21 remaining on the upstream side of the attachment reference position 10 remains at the attachment reference position 10. The determination unit 196 converts the image obtained by the image capturing unit 18 into a grayscale image, and determines the presence or absence of the adhesive tape 21 in each of the small regions R11 to R16, which are set as inspection areas in a total of six locations, three of which are set before and after the attachment reference position 10, as shown in Figures 4(f1) and (f2) (step S13). The three small regions R11, R12, R13 and R14, R15, R16 before and after the attachment reference position 10 are set in advance so as to be arranged side by side in the width direction of the tape-like member 2. The presence or absence of the adhesive tape 21 is determined, for example, when the proportion of pixels having a predetermined pixel value or more in each small region R11 to R16 is equal to or greater than a predetermined proportion, in other words, when the proportion of pixels having a pixel value less than a predetermined value is less than a predetermined proportion, the adhesive tape 21 is determined to be absent in the small region R11 to R16, and when the proportion of pixels having a predetermined pixel value or more is less than a predetermined proportion, in other words, when the proportion of pixels having a pixel value less than a predetermined value is equal to or greater than a predetermined proportion, the adhesive tape 21 is determined to be present in the small region R11 to R16. In this way, the determination unit 196 determines the quality of the head exposure by determining the quality of the state (shape) of the tip (half-cut line 20b) of the adhesive tape 21 remaining on the upstream side after the unnecessary adhesive tape 21 is peeled off.

As shown in FIG. 4(f1), if the determination unit 196 determines that the adhesive tape 21 is present in at least one of the small regions R14 to R16 in front of (downstream of) the application reference position 10 (NO in step S14), the process returns to step S04 as a head alignment failure. In this case, it is considered that when the unnecessary adhesive tape 21 is peeled off, a part of the adhesive tape 21 is not peeled off and remains on the release tape 22, resulting in a peeling failure.

On the other hand, as shown in FIG. 4(f2), if it is determined that there is no adhesive tape 21 in any of the small regions R14 to R16 in front of (downstream of) the application reference position 10 (YES in step S14), and if it is determined that there is no adhesive tape 21 in at least one of the small regions R11 to R13 behind (upstream of) the application reference position 10 (NO in step S15), the process returns to step S04 as a head alignment failure. In this case, it is considered that when the unnecessary adhesive tape 21 is peeled off, a part of the leading end of the upstream adhesive tape 21, which is the leading adhesive tape 21, is peeled off together. This is considered to be caused by a defective half cut by the cutter 160, with the unnecessary adhesive tape 21 and a part of the leading adhesive tape 21 being connected at the half cut line 20b.

Also, as shown in FIG. 4(g), if it is determined that there is no adhesive tape 21 in any of the small regions R14 to R16 located in front of (downstream of) the reference application position 10 (YES in step S14), and if it is determined that there is adhesive tape 21 in any of the small regions R11 to R13 located behind (upstream of) the reference application position 10 (YES in step S15), it is determined that the head has been aligned and the process ends.

It is also possible that a NO judgment at step S06, step S14, or step S15 will return to step S04, and the process of again getting a NO judgment at the next step S06, step S14, or step S15 will be repeated. In such a case, a step for judging the number of repetitions may be set before step S06 or step S14, and when the set number of repetitions has been performed, an error may be detected, the cueing operation may be interrupted, and an alarm or the like may be sounded to notify the operator of the abnormality. In such a case, one of the causes may be the aforementioned half-cut defect by the cutter 160. Therefore, the control unit 19 may sound an alarm to prompt the user to carry out maintenance work such as cleaning or replacing the cutter 160.

[Action]
The operation of the adhering device 1 of the embodiment will be described with reference to Figs. 5 to 8, showing a comparative example.

(Inclination of lighting part)
Fig. 5(a) is a cross-sectional view showing how the tape-shaped material 2 is photographed in the bonding device of the comparative example. Fig. 5(b) is an image of the tape-shaped material 2 obtained by the bonding device of the comparative example. However, a graph of pixel values for each position in the image is superimposed on the image. The pixel values are expressed in 256 gradations, with black being 0 and 255 being white.

As shown in FIG. 5(a), a half mirror M is provided inside the imaging unit 18, and 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 on the tape-shaped material 2 from a direction perpendicular to the tape-shaped material 2 as coaxial light parallel to the optical axis of the imaging unit 18.

As shown in FIG. 5(b), there was almost no difference in pixel values between the adhesive tape 21 and the release tape 22. This made it difficult to detect the break 20 in the adhesive tape 21.

As such, it can be seen that simply providing lighting L makes it difficult to detect the break 20 in the adhesive tape 21.

Figure 6(a) is a cross-sectional view showing the state of photographing the tape-shaped material 2 in the adhesion device 1 of the embodiment. Figure 6(b) is an image of the tape-shaped material 2 obtained by the adhesion device 1 of the embodiment. However, a graph of the pixel values for each position in the image is superimposed on the image. The pixel values are expressed in 256 shades, with black being 0 and 255 being white.

As shown in FIG. 6(a), the optical axis of the illumination unit 17 is oblique to the perpendicular line of the tape-shaped member 2, and the optical axis of the imaging unit 18 is perpendicular to the tape-shaped member 2. By configuring in this way, as shown in FIG. 6(b), a large difference occurs in the pixel values of the adhesive tape 21 and the release tape 22, and the contrast between the areas with and without the adhesive tape 21 becomes clear. It is presumed that this is due to the shape of the fine unevenness on the surface of the release tape 22 and the shape of the fine metal particles contained in the adhesive tape 21. In other words, the metal particles of the adhesive tape 21 are almost spherical, and the amount of diffused light entering the imaging unit 18 does not change significantly whether the incident light from the illumination unit 17 is coaxial or oblique. In contrast, the unevenness of the surface of the release tape 22 is random, and therefore, it is presumed that the amount of diffused light entering the imaging unit 18 is increased by obliquely incident light from the illumination unit 17. For example, in FIG. 6, the angle θ at which the optical axis of the illumination unit 17 intersects with the perpendicular line of the tape-shaped member 2 is set to 75°, and the pixel value at the location where the adhesive tape 21 is present is approximately 157, while the pixel value at the location where the adhesive tape 21 is not present is approximately 97. In this way, the shading difference is 50 or more, and the break 20 in the adhesive tape 21 can be stably detected.

The inventors therefore conducted an experiment 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. Figure 7 shows the inclination angle θ of the optical axis of the illumination unit 17 with respect to the perpendicular line of the tape-shaped member 2, and the detection results of the slit 20 in the adhesive tape 21 at that angle. The detection results were obtained using a white LED (model: SBR-15-50W) manufactured by Seiwa Optical Manufacturing Co., Ltd. as the illumination unit 17, a camera (model: FZ-S) manufactured by Omron Corporation as the imaging unit 18, and a distance of 100 mm between the tape-shaped member 2 and the imaging unit 18. The tape-shaped member 2 to be photographed had the slit 20 in the adhesive tape 21 parallel to the width direction of the tape-shaped member 2.

As shown in FIG. 7, the inclination angle θ was changed to 30°, 45°, 60°, 75°, 85°, and 90° to attempt detection of the gap 20. As a result, when the inclination angle θ was 30°, 45°, and 90°, the gap 20 could not be detected well. On the other hand, when the inclination angle θ was 60°, 75°, and 85°, the gap 20 could be detected well. In other words, the difference in pixel values between the area with adhesive tape 21 and the area without adhesive tape 21 was large, at 50 or more, and the accuracy of the detection of the presence or absence of adhesive tape 21 was improved.

In this way, by setting the inclination angle θ to 60° to 85°, it is possible to improve the accuracy of determining the presence or absence of the adhesive tape 21 in common for detecting the leading portion of the adhesive tape 21, detecting the half-cut line 20b formed on the adhesive tape 21, and detecting the presence or absence of the adhesive tape 21 before and after the reference application position 10.

(Feed correction of tape-shaped material)
The following describes the feed correction of the tape-shaped material 2. As described above, the distance between the cutting unit 16 and the adhesion reference position 10 is predetermined, and after the half-cut line 20b is formed, the tape-shaped material 2 is fed by the transport unit 14 and the transport control unit 197 by that distance, so that the half-cut line 20b comes to the adhesion reference position 10.

However, in reality, an error may occur in the feed amount of the tape-shaped material 2 due to a rotation error of the feed motor or feed roller 140 or expansion and contraction of the tape-shaped material 2. The narrower the width of the tape-shaped material 2, the more likely it is to stretch even with a constant tension, and the more likely it is to get caught on the rollers, etc. Therefore, the tape-shaped material 2 may experience a unique expansion for each type. In this way, when an error occurs in the feed amount of the tape-shaped material 2, the application error in the feed direction of the adhesive tape 21 becomes large.

In this embodiment, the imaging unit 18 and the determination unit 196 determine whether the half-cut line 20b is located within the allowable range of the attachment reference position 10. If the half-cut line 20b is outside the specified range, the transport control unit 197 calculates the distance between the half-cut line 20b of the adhesive tape 21 and the attachment reference position 10, and sets a correction amount for feeding the tape-shaped material 2 by the transport unit 14 so that the half-cut line 20b is located at the attachment reference position 10 by that distance. During the attachment operation described below, the tape-shaped material 2 is fed to the attachment reference position 10 by a feed amount including the correction amount.

That is, as shown in Fig. 8(a), if the feeding of the tape-shaped member 2 causes the half-cut line 20b to shift in front of the application reference position 10, the tape-shaped member 2 is fed toward the application section 11 by the shifted distance D1. On the other hand, as shown in Fig. 8(b), if the feeding of the tape-shaped member 2 causes the half-cut line 20b to shift beyond the application reference position 10, the tape-shaped member 2 is fed back toward the cutting section 16 by the shifted distance D2.

In this way, the deviation between the half-cut line 20b and the application reference position 10 is detected, and the feed of the tape-shaped material 2 is corrected to eliminate the deviation, so that the head of the adhesive tape 21 can be accurately positioned, and as a result, the adhesive tape 21 can be accurately applied to the substrate provided in the application section 11.

[Pasting operation]
Fig. 9 is a flow chart showing an example of an operation of the adhesive tape adhering device 1 to adhere the adhesive tape 21 to the substrate. Fig. 10 is a diagram showing the adhering operation of the adhesive tape adhering device 1.

As a premise, as shown in FIG. 10(a), it is assumed that the slit 20 (half-cut line 20b) in the adhesive tape 21 is located at the application reference position 10, and the head of the adhesive tape 21 has been set. In other words, the cutter 160 has been inspected during the head setting operation, and the half-cut line 20b that will become the slit 20 is normally formed by the cutting section 16 so that it is parallel to the width direction of the tape-like member 2. In addition, no adhesive tape 21 remains downstream of the slit 20, and the adhesive tape 21 does not adhere to the members that come into contact with the tape-like member 2, such as the feed roller 140, preventing poor transport of the tape-like member 2.

In addition, instead of the waste plate 112, a product substrate 300, for example a component constituting a flat panel display, is placed on the support surface 111a of the stage member 111. The desired length of adhesive tape 21 is attached to the substrate 300. For convenience, it is assumed here that the adhesive tape 21 is attached to the entire substrate 300 in the transport direction, and the distance between the cutting section 16 and the attachment reference position 10 is equal to the length of the substrate 300 and the length of the pressure head 111.

As shown in FIG. 10(b), first, the cutting unit 16 half-cuts the tape-shaped member 2 (step S21). Then, as shown in FIG. 10(c), the conveying unit 14 advances the tape-shaped member 2 by the distance between the cutter 160 and the attachment reference position 10 (step S22). This advance causes the half-cut line 20b formed in step S21 to coincide with the attachment reference position 10. Then, the stage member 111 is moved to position the edge of the substrate 300 to which the adhesive tape 21 is attached under the tape-shaped member 2. Then, the preheated pressure head 110 is lowered, and the substrate 300 and the tape-shaped member 2 are sandwiched and pressed between the pressure head 110 and the stage member 111, so that the adhesive tape 21 of the tape-shaped member 2 is attached to the substrate 300 (step S23). Thereafter, the pressure head 110 is raised and the peeling part 15 is moved horizontally toward the attachment part 11, thereby peeling the release tape 22 from the adhesive tape 21 attached to the substrate 300 (step S24), as shown in FIG. 10(d), and returning the peeling part 15 to its original position.

After that, if the adhesive tape 21 is to be applied to a substrate 300 to which the adhesive tape 21 has not yet been applied (YES in step S25), the substrate on the stage member 111 to which the adhesive tape 21 has already been applied is replaced with a new substrate 300 to which the adhesive tape 21 has not yet been applied, and the process returns to step S21.

On the other hand, if the adhesive tape 21 is not to be applied to a substrate 300 to which the adhesive tape 21 is not yet attached (NO in step S25), the process ends. Note that in step S22 for feeding the tape-shaped material 2, a feed correction of the tape-shaped material 2 may be performed in the same manner as in steps S06 to S09 described above.

[effect]
the adhesive tape 21 positioned at the adhesion reference position 10; and a judgment unit 196 which judges whether the state of the cut 20 in the adhesive tape 21 is good or not, based on the image of the tape-shaped member 2 obtained by the image pickup unit 18. The adhesive tape 21 is adhered to a release tape 22 by a supply unit 12 which supplies a tape-shaped member 2 having the adhesive tape 21 adhered thereto; an adhesion unit 11 which adheres the adhesion surface of the adhesive tape 21 opposite the release tape 22 to an object to be adhered; a transport unit 14 which sends the tape-shaped member 2 from the supply unit 12 to the adhesion unit 11; an illumination unit 17 which is arranged on the adhesive tape 21 side of the tape-shaped member 2 and has an optical axis which is directed toward an adhesion reference position 10 set for the adhesion unit 11 and is obliquely arranged at a preset angle with respect to the perpendicular direction of the adhesion surface of the adhesive tape 21 positioned at the adhesion reference position 10; an imaging unit 18 which is arranged on the adhesive tape 21 side of the tape-shaped member 2 and has an optical axis which is aligned with the adhesion reference position 10, and which captures an image of the tape-shaped member 2 positioned at the adhesion reference position 10; and a judgment unit 196 which judges whether the state of the cut 20 in the adhesive tape is good or bad, based on the image of the tape-shaped member 2 obtained by the imaging unit 18.

This allows the gap 20 in the adhesive tape 21 to be automatically recognized, so the head of the adhesive tape 21 can be automatically located without the need to manually locate the head of the adhesive tape 21. That is, if the illumination unit L is provided so that its optical axis is perpendicular to the tape-shaped member 2 as in the above comparative example, the image of the tape-shaped member 2 becomes unclear, making it difficult to detect the gap 20. In response to this, the inventors and others have conducted extensive research and have found that by providing the illumination unit 17 at an angle to the perpendicular line of the tape-shaped member 2, the contrast of the image of the tape-shaped member 2 becomes clear. According to this embodiment based on this knowledge, the head of the adhesive tape 21 can be automatically located.

The cutter 160 is provided between the supply unit 12 and the adhesion unit 11, and the cutting unit 16 cuts the adhesive tape 21 of the tape-shaped member 2 to form the half-cut line 20b that becomes the cut 20. The transport unit 14 feeds the tape-shaped member 2 so that the half-cut line 20b is at the adhesion reference position 10. The imaging unit 18 images the tape-shaped member 2 including the half-cut line 20b. The judgment unit 196 detects the half-cut line 20b from the image obtained by the imaging unit 18 and judges whether the shape of the cut surface of the half-cut line 20b is good or bad.

This allows the wear of the cutter 160 to be managed. In other words, if the half-cut line 20b is determined to be defective, it is assumed that the blade of the cutter 160 is worn out. In this case, for example, a display device such as a display or a notification means such as a speaker can be connected to the control unit 19, and the operator can be prompted to replace the cutter 160 on the screen or by voice.

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

This improves the accuracy of aligning the half-cut line with the attachment reference position 10.

The transport control unit 197 calculates the distance between the half-cut line 20b and the attachment reference position 10, and when the determination unit 196 determines that the half-cut line 20b is outside the allowable range, the transport unit 14 feeds the tape-shaped member 2 so that the half-cut line 20b is positioned at the attachment reference position 10 based on the distance calculated by the transport control unit 197.

This improves the accuracy of the alignment of the adhesive tape 21, and improves the accuracy of the application position of the adhesive tape 21 to the substrate, which is the object to be applied, in the running direction of the tape-shaped member 2.

The adhering unit 11 adheres the adhesive tape 21 downstream of the half-cut line 20b to the object to be adhered, specifically the waste plate 112, the imaging unit 18 photographs the tape-like member 2 after adhering by the adhering unit 11, and the judgment unit 196 judges the presence or absence of the adhesive tape 21 in multiple areas set along the width direction of the adhesive tape 21 before and after the adhering reference position 10, and judges whether the adhesive tape 21 is properly aligned based on the judgment result.

This makes it possible to ensure that no adhesive tape 21 remains in front of the application reference position 10, and that the adhesive tape 21 is located behind the application reference position 10, allowing the adhesive tape 21 to be accurately positioned. It also makes it possible to prevent poor transport of the tape-shaped member 2 caused by the adhesive tape 21 remaining on the release tape 22 being caught in rollers such as the transport section 14 located downstream of the application section 11.

The determination unit 196 converts the image into a grayscale image to detect the cut 20. This allows not only the presence or absence of the cut 20 but also the quality of the cut 20 to be accurately detected. For example, when the cut 20 is a half-cut line 20b, it is possible that the adhesive tape 21 is not completely cut due to dirt on the cutting edge of the cutter 160 or chipped blade, and the adhesive tape 21 is partially left with a thickness thinner than the original thickness and appears as a dotted line. When this image is binarized, it may be erroneously detected that the half-cut line 20b is normally formed. In other words, when the remaining adhesive tape 21 is thin and the pixel value of this adhesive tape 21 portion is on the side of the binarization threshold where the adhesive tape 21 is absent, the half-cut line 20b is detected as good. Even in such a situation, by converting the image into a grayscale image, the adhesive tape 21 on the half-cut line 20b remains in the image and can be detected as defective.

The illumination unit 17 is arranged so that its optical axis is inclined at an angle of 60° to 85° with respect to the perpendicular line of the tape-shaped material 2. This makes it possible to make the contrast of the image of the tape-shaped material 2 obtained by the imaging unit 18 and the determination unit 196 clearer, and the cut 20 can be detected accurately.

The illumination unit 17 is adapted to emit white light or green light. This allows the contrast of the image of the tape-shaped material 2 obtained by the imaging unit 18 and the determination unit 196 to be made clearer, and the cut 20 can be detected accurately. In particular, when the illumination unit 17 of white light or green light and the adhesive tape 21 are anisotropic conductive films, the contrast becomes clearer, improving the accuracy of detecting the cut 20 and, as a result, improving the accuracy of the cueing.

[Other embodiments]
The present invention is not limited to the above-described embodiment, but also includes other embodiments described below. The present invention also includes a combination of all or any of the above-described embodiment and the other embodiments described below. Furthermore, these embodiments can be omitted, replaced, or modified in various ways without departing from the scope of the invention, and such modifications are also included in the present invention.

In the above embodiment, the illumination unit 17 is provided upstream of the tape-shaped member 2 with respect to the reference attachment position 10, but as shown in FIG. 11, it may be provided downstream of the tape-shaped member 2. In this case, after the adhesive tape 21 is trimmed, the cross section of the slit 20b in the adhesive tape 21 is exposed to the illumination unit 17, and the cross section is directly illuminated, making the contrast of the image of the tape-shaped member 2 clear. Although not limited to the following mechanism, it is believed that the light reflected by the end face of the slit 20b and the metal particles in the adhesive tape 21 is also reflected by the release tape 22 downstream of the slit 20b and enters the imaging unit 18, increasing the amount of light reflected near the slit 20b.

In addition, in the above embodiment, the feed amount of the tape-shaped material 2 is corrected by the conveying unit 14, but a moving mechanism for moving the adhering unit 11 may be provided separately, and the adhering reference position 10 may be aligned with the half-cut line 20b by moving the adhering unit 11 using the moving mechanism.

In the above embodiment, the adhesion reference position 10 is set to a position that coincides with the upstream end of the pressure head 110, but it may be set to another position, for example, a position upstream of the upstream end of the pressure head 110.

In the above embodiment, when a new tape-like material 2 is set in the bonding device 1, the slit 20 that forms the leading portion of the adhesive tape 21 is formed in an arbitrary shape by the operator, but the slit 20 may be formed parallel to the width direction of the tape-like material 2 at the time of setting. In this case, the above steps S01 to S03 are sufficient for the leading operation of the adhesive tape 21.

1 Adhesive tape application device 10 Application reference position 11 Application unit 110 Pressure head 111 Stage member 111a Support surface 112 Disposal plate 12 Supply unit 120 Supply reel 121 Tension mechanism 121a Fixed roller 121b Movable roller 122 Path roller 13 Recovery unit 130 Recovery reel 131 Path roller 14 Transport unit 140 Feed roller 15 Peeling unit 150, 151 Peeling bar 16 Cutting unit 160 Cutter 161 Backup member 161a Flat surface 17 Illumination unit 18 Imaging unit 19 Control unit 190 Application control unit 191 Tension mechanism control unit 192 Peeling control unit 193 Cutting control unit 194 Illumination control unit 195 Imaging control unit 196 Determination unit 197 Transport control unit 2 Tape-shaped member 20 Adhesive tape cut 20a Leading portion of adhesive tape 20b Half-cut line 21 Adhesive tape 22 Release tape 300 Substrate

Claims (6)

a supply unit that supplies a tape-shaped member having an adhesive tape attached to a release tape;
an attachment portion that attaches an attachment surface of the adhesive tape opposite to the release tape to an object to be attached;
a conveying section that conveys the tape-shaped material from the supply section to the bonding section;
an imaging section that is disposed on the adhesive tape side of the tape-shaped member and that images the tape-shaped member positioned at a reference adhesion position that is set with respect to the adhesion section;
a determination unit that determines whether a state of the cut in the adhesive tape is good or bad based on the image of the tape-shaped material obtained by the imaging unit;
Equipped with
the determining unit determines the presence or absence of the adhesive tape in a plurality of areas set along a width direction of the adhesive tape before and after the application reference position, and determines whether a break in the adhesive tape is in a good condition based on the determination result;
An adhesive tape application device comprising: a cutting unit having a cutter provided between the supply unit and the adhering unit, the cutting unit cutting the adhesive tape of the tape-shaped member to form a half-cut line serving as the cut;
the transport unit transports the tape-shaped material so that the half-cut line is located at the application reference position;
the imaging unit images the tape-shaped material including the half-cut line,
the determination unit detects the half cut line from the image obtained by the imaging unit, and determines whether or not a shape of a cut surface of the half cut line is good;
2. The adhesive tape application device according to claim 1, the determination unit determines whether the detected half-cut line is within an allowable range including the attachment reference position;
3. The adhesive tape application device according to claim 2 , a conveyance control unit that calculates a distance between the half-cut line and the application reference position,
when the determination unit determines that the half-cut line is out of the allowable range, the transport unit transports the tape-shaped material so as to position the half-cut line at the attachment reference position based on the distance calculated by the transport control unit;
4. The adhesive tape application device according to claim 3 , the adhering section adheres the adhesive tape downstream of the half-cut line to the object to be adhered,
the imaging unit captures an image of the tape-shaped material after it has been adhered by the adhering unit;
5. The adhesive tape application device according to claim 2 , a lighting unit disposed on the adhesive tape side of the tape-shaped member, the lighting unit having an optical axis directed to the reference application position and obliquely intersecting at a preset angle with a normal to the application surface of the adhesive tape located at the reference application position;
2. The adhesive tape application device according to claim 1,

Images