JP2008143538A - Tape gluing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tape gluing device which neatly and speedily glues a tape generating no wrinkle from the end face to the front/back faces of a panel along the edge of the panel. <P>SOLUTION: This tape gluing device is provided with: a panel holding mechanism 2 for holding a panel 1; a tape attachment unit 4 for attaching a tape 3 to the end face of the panel while moving along the edge face a of the panel; and a pair of pressure contact rollers 5a, 5b which are provided freely rotative around an axis in parallel with the moving direction of the unit 4 and fold the part of the tape 3 sticking out from the end face a of the panel to be adhered to the front/back faces b, c of the panel by holding the edge 1a of the panel 1 while moving in the direction directly crossing the moving direction of the unit 4 after attaching the tape 3 to the end face a by the unit 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a tape applicator for attaching a tape from an end surface of a panel to a front and back surfaces along an edge of the panel.

As shown in FIGS. 15A and 15B, the filter attached to the front surface of the plasma display is a metal foil tape 3 on the four peripheral edges of the glass panel 1 extending from the end surface a of the panel to the front and back surfaces b and c. Is pasted to form an electrode. The operation of applying the metal foil tape 3 has been performed manually until now. The work procedure will be described. The panel 1 is placed on a workbench, and as shown in FIG. 16 (a), the release paper is peeled off and the metal foil tape 3 is directly applied to the edge of the surface b of the panel. As shown in FIG. 16B, the metal foil tape 3 is folded and attached to the end surface a of the panel so that the belly of the thumb is pressed against the portion of the metal foil tape 3 protruding from the panel and slid. Next, the panel 1 is turned upside down, and the metal foil tape 3 is further bent and attached to the back surface c of the panel as shown in FIG.
When the metal foil tape 3 is first applied to the panel surface b, if the position of the metal foil tape 3 is shifted or slanted in the width direction of the tape, the metal foil tape 3 is bent to the panel front and back surfaces b and c side. The length varies, which is undesirable in terms of product performance. Also, since the attached metal foil tape 3 should not have any wrinkles, use a finger to attach the metal foil tape 3 to the panel, then rub the metal foil tape 3 with a spatula so that there are no wrinkles. I have to. Thus, it is necessary to perform this tape application work carefully and carefully, and it takes several minutes to apply the metal foil tape to all four sides of one panel.

Patent Document 1 describes a tape applicator in which a metal foil tape is pressed against an end surface of a glass plate while peeling the release paper so that the metal foil tape can be applied straight to the end surface of the glass plate. However, even if this tape applicator is used, the work of bending and sticking the metal foil tape that protrudes from the end face of the glass plate to the front and back surfaces of the glass plate must be done manually. I can't hope.
In Patent Document 2, the tape bending members 10 and 10 'are arranged so that the tape 5 is pressed by a pressing roll 9 while being moved along the end face of the panel and is attached to the end face of the panel, and the panel is sandwiched from both sides. The tape sticking tool which bent the tape which protruded from the panel end surface at any time, and was stuck on the panel front and back is described. In this tape applicator, since the tape bending members 10 and 10 ′ bend and attach the tape 5 while partially twisting the tape 5, the tape is wrinkled or the tape is damaged. There is a fear.
JP 2001-48413 A Japanese Patent Application Laid-Open No. 11-334981

  SUMMARY OF THE INVENTION The present invention has been made in view of the circumstances described above, and it is an object of the present invention to provide a tape applicator that can apply tape quickly and cleanly from the end surface of the panel to the front and back surfaces along the edge of the panel. And

  To achieve the above object, a tape applicator according to the invention described in claim 1 includes a panel holding mechanism for holding the panel, and a tape applicator unit for adhering the tape to the end face of the panel while moving along the end face of the panel. It is provided to be rotatable about an axis parallel to the moving direction of the tape adhering unit, and after the tape is applied to the end face of the panel by the tape adhering unit, the panel is moved while moving in the direction perpendicular to the moving direction of the tape adhering unit. It is characterized by comprising a pair of pressure contact rollers that bend the portions protruding from the end face of the panel of the tape by sandwiching the edge and stick them to the front and back surfaces of the panel.

  According to a second aspect of the present invention, there is provided a tape sticking apparatus according to the first aspect, wherein at least one of the pair of pressure contact rollers includes a drum having a central portion larger in diameter than an end portion. It is formed in a shape.

  According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the surface of one of the pair of pressure rollers is softer than the surface of the other pressure roller. It is characterized by that.

  In addition to the structure of the invention described in claims 1 to 3, the tape applicator according to the invention described in claim 4 is provided with a tape applicator unit and a pressure roller symmetrically with respect to the center line in the width direction of the panel. It is characterized by affixing a tape to the edge part of both sides simultaneously.

  In addition to the structure of the invention described in claims 1 to 4, a tape sticking device according to the invention described in claim 5 is provided with a flexible tape bending member adjacent to the side of the pressure contact roller on the forward side in the moving direction. And the tape bending member bends the tape toward the front and back surfaces of the panel before the pressure contact roller sandwiches the panel.

  According to a sixth aspect of the present invention, in addition to the configuration of the first to fifth aspects of the present invention, the panel holding mechanism includes a plurality of suction pads that are attached to one side of the panel, and the suction pad is made of a betting cloth. It is characterized by being covered.

  According to a seventh aspect of the present invention, in addition to the configuration of the first to sixth aspects of the present invention, the tape adhering unit is movable in a direction parallel to the thickness direction of the panel.

  In the tape applicator according to the first aspect of the present invention, after the tape applicator unit applies the tape to the end face of the panel, the pair of press rollers move the edge of the panel while moving in a direction perpendicular to the moving direction of the tape applicator unit. By sandwiching the tape, the tape is bent and attached to the front and back surfaces of the panel, so that the tape is not twisted and can be applied to the edge of the panel neatly without wrinkles. Moreover, since a pair of press-contact roller performs bending and sticking of a tape over the full length of a tape at once, even when sticking a tape to a long distance, it can be performed in a short time.

  According to a second aspect of the present invention, at least one of the pair of pressure contact rollers is formed in a drum shape in which the diameter of the central portion is larger than the diameter of the end portion. The action to prevent the pressure exerted on the panel from the center of the tape from becoming weaker than that on the end side, and the action of pushing the tape from the center to the end side are obtained, and the generation of wrinkles on the tape is further ensured. Can be prevented.

  According to a third aspect of the present invention, there is provided the tape sticking device according to the present invention, wherein the surface of one of the pair of pressure rollers is softer than the surface of the other pressure roller, and the one pressure roller side serves as a reference. Can be prevented, and the other pressure roller is compatible with the panel, so that pressure can be applied uniformly to the panel from the entire length of the pressure roller.

  In the tape applicator according to the invention of claim 4, the tape applicator unit and the pair of press rollers are provided symmetrically with respect to the center line in the width direction of the panel, and the tape is applied to the edges on both sides of the panel simultaneously. Since it did it, the efficiency of the sticking operation | work of the tape to the edge part of a panel improves.

  According to a fifth aspect of the present invention, there is provided a tape sticking apparatus according to the present invention, wherein a flexible tape bending member is disposed adjacent to the side of the forward movement side of each press contact roller, and before the press contact roller sandwiches the panel. Since the tape bending member bends the tape toward the front and back surfaces of the panel, even if the tape is strong like a metal foil tape, the tape can be securely bent and adhered to the panel.

  According to a sixth aspect of the present invention, there is provided a tape applicator according to the invention, wherein the panel holding mechanism is provided with a plurality of suction pads that are sucked to one side of the panel, and the suction pad is covered with a cover made of a betting cloth, thereby ensuring that the panel is displaced. It is possible to prevent the panel from being scratched by the suction pad.

  The tape sticking device according to the seventh aspect of the invention can adjust the length of the tape to be bent to the front and back sides of the panel by moving the tape sticking unit in a direction parallel to the thickness direction of the panel.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1-10 has shown one Embodiment of the tape sticking apparatus of this invention. In this tape pasting device, in the process of manufacturing a filter to be attached to the front surface of the plasma display, aluminum as an electrode is formed on the four peripheral edges of the rectangular glass panel 1 as shown in FIGS. 15 (a) and 15 (b). Or a metal foil tape 3 made of copper. As shown in FIG. 1, this panel sticking apparatus is provided with conveyors 10a, 10b, 10c, and 10d that horizontally convey the panel 1 one by one in an L-shaped arrangement in plan view, and the panel 1 is a carry-in conveyor 10a. The sheet 1 is conveyed in the long side direction of the panel 1, and the metal foil tape 3 is simultaneously attached to the long side edges 1a, 1a on both sides of the panel 1 by the long side tape attaching device 9a, and then the panel 1 is conveyed to the conveyors 10b, 10c. The metal foil tape 3 is simultaneously affixed to the short side edges 1b and 1b on both sides of the panel 1 by the short side tape affixing device 9b, and is carried out from the carry-out conveyor 10d. The long side tape sticking device 9a and the short side tape sticking device 9b are structurally the same. Hereinafter, the detailed structure of the long side tape sticking device 9a will be described with reference to FIGS.

  As shown in FIG. 2, the long side tape sticking device 9 a includes a right unit 11 a for sticking the metal foil tape 3 to the long side edge 1 a on the right side when viewed from the front side of the panel 1 in the transport direction, and the left side of the panel 1. The left unit 11b that affixes the metal foil tape 3 to the long side edge 1a is disposed symmetrically on the base 12. The right unit 11a and the left unit 11b are guided by a linear guide 13 so as to be able to move forward and backward with respect to the center line CL of the apparatus, and as shown in FIG. 3, a servo motor 14 provided in the base 12; Ball screw mechanisms 15a and 15b engaged with gears 16a and 16b and rotated in opposite directions are moved forward and backward in conjunction with each other.

As shown in FIG. 4, in the central portion of the base 12, a conveyor 17 that transports the panel 1, a stopper device 18 that stops the transported panel 1 at a predetermined position, and a plurality that are attracted to the lower surface of the panel 1. The suction pad 7 is provided.
The conveyor 17 circulates an endless belt 20a, 20b wound around pulleys 19a, 19b, 19c, 19d by a motor 21 and transports the panel 1 on the belts 20a, 20b.
In the stopper device 18, the stopper block 22 is provided so as to be movable up and down by the stopper upper and lower cylinders 23, and the front end surface of the panel 1 is brought into contact with the raised stopper block 22 to stop the panel 1. The stopper upper and lower cylinders 23 are installed on a table 24 that is movable in the conveying direction of the panel 1, and the table 24 can be positioned at an arbitrary position in the moving range via a servo motor 25 and a ball screw mechanism 26. The position of the stopper block 22 is changed according to the length of 1.
The suction pads 7 are formed by connecting a hose that sucks air to a rubber-like bowl-shaped member, and four suction pads 7 are provided side by side in the transport direction of the panel 1. The four suction pads 7 are integrated by a cylinder 27. It is designed to move up and down. Each suction pad 7 is individually mounted so that it can freely move about several millimeters in the vertical direction. The suction pad 7 pushed up by the cylinder 27 stops at a position slightly away from the lower surface of the panel 1 and sucks air. Each suction pad 7 is slightly lifted by force and is sucked to the lower surface of the panel 1. Each suction pad 7 is covered with a cover 8 formed of a betting cloth.

As shown in FIG. 5, on both sides of the front part of the right unit 11a, support posts 28a and 28b are erected vertically, and a pair of press rollers 5a and 5b are spaced apart from each other in the vertical direction. It is supported horizontally. As shown in FIG. 6, the upper pressure roller 5a has a shaft end supported via a bearing at the tip of an arm 30a that swings up and down by a cylinder 29a, and the lower pressure roller 5b similarly. The shaft end is supported via a bearing at the tip of an arm 30b that swings up and down by the cylinder 29b. Both the pressing rollers 5a and 5b are made by lining urethane rubber around an iron shaft, and the surface of the upper pressing roller 5a is softer than the surface of the lower pressing roller 5b. The upper pressure roller 5a has a constant diameter over its entire length, and the lower pressure roller 5b is formed in a drum shape whose central portion has a diameter of about 0.2 mm larger than the end portion. As described above, the reason why the lower pressure roller 5b is formed into a drum shape is that the pressure roller 5b is long and supported only at both ends, and is slightly bent by its own weight, so the diameter of the pressure roller 5b is constant. In this case, the pressure exerted on the panel 1 is weakened at the central portion in the longitudinal direction of the pressure roller 5b, or a gap is formed between the pressure roller 5b and the panel 1 to prevent this.
In the cylinders 29a and 29b for moving the pressure rollers 5a and 5b, the size of the lower pressure roller cylinder 29b is larger than that of the upper pressure roller cylinder 29a. As shown by a two-dot chain line in FIG. 6, the pressure rollers 5a and 5b move the right unit 11a forward, and then project the rods of the upper and lower cylinders 29a and 29b so that the distance between the pressure rollers 5a and 5b is increased. The two press rollers 5a and 5b are pressed against the upper and lower surfaces of the panel 1 so as to sandwich the long side edge 1a of the panel 1 from above and below.
Further, as shown in FIG. 6, on the side of the upper pressure roller 5a on the forward side in the unit movement direction, a brush 6a formed of a lot of flexible synthetic resin fibers is adjacent to the pressure roller 5a. Installed downward. Similarly, the brush 6b is also attached upward on the side of the lower pressure roller 5b on the forward side in the unit movement direction.

  As shown in FIGS. 1 and 2, a tape adhering unit 4 for adhering the metal foil tape 3 to the end face of the long side edge 1 a on the right side of the panel 1 is provided at the rear of the right unit 11 a. The tape adhering unit 4 moves along the end surface a of the long side edge 1a of the panel 1 via the linear guide 32 on the table 31 provided long in the rear of the right unit 11a in parallel with the long side direction of the panel 1. The servo motor 33 and the ball screw mechanism 34 that are freely supported and attached to the rear surface of the table 31 are capable of reciprocating along the end surface a of the long side edge 1a of the panel 1. As shown in FIGS. 7 to 9, the tape sticking unit 4 includes a tape supply unit 35 that continuously supplies the metal foil tape 3, and a release paper winding unit 37 that winds the release paper 36 peeled off from the metal foil tape 3. A tape affixing part 38 for pressing and adhering the adhesive surface of the metal foil tape 3 to the end surface a of the panel 1 and a cutter part 39 for cutting the metal foil tape 3. The metal foil tape 3 is attached to the end surface a of the panel by moving from right to left in FIG.

As shown in FIGS. 7 and 8, the tape supply unit 35 is provided with a tape mounting shaft 40 on which the coil 3 a of the metal foil tape 3 is mounted so as to be able to stand up and rotate on the upper plate 41. A predetermined torque is transmitted from the torque motor 42 through the belt, and the metal foil tape 3 is continuously moved in conjunction with the movement of the tape affixing unit 4 while applying tension so that the metal foil tape 3 does not loosen. Pull out.
Similarly, in the release paper winding unit 37, a release paper winding shaft 43 that winds up the release paper 36 is provided on the upper plate 41 so as to be rotatable, and the release paper winding shaft 43 is connected to the release paper winding shaft 43 via a belt. The torque of the torque motor 44 is transmitted, and the release paper 36 separated from the metal foil tape 3 by the release paper peeling roller 45 disposed at the end of the tape application section 38 is moved to the tape application unit 4 while applying tension. Wind up in conjunction. A disk-shaped receiving plate 46 for receiving the coil 3a of the metal foil tape is attached to the tape mounting shaft 40. A disk-shaped receiving plate 46 for receiving the coil 36a of the released release paper 36 is attached to the release paper winding shaft 43. The receiving plate 47 is attached.

As shown in FIG. 8, the upper plate 41 is connected to a slide plate 48 that slides on the table 31 via a plurality of rotating arms 49 and a column 50 connected to the arms 49 by a horizontal axis. It is supported so as to be movable in the vertical direction.
On the slide plate 48, as shown in FIG. 7, two brackets 51 extending toward the panel 1 side are attached side by side in the long side direction of the panel 1, and a centering cylinder 52 is attached to each bracket 51. In addition, a centering roller 53 is attached to the centering cylinder 52.

  As shown in FIG. 7, the tape affixing portion 38 has a release paper peeling roller 45 that peels off the release paper 36 from the metal foil tape 3, and a front tape that presses the metal foil tape 3 against the end surface a of the panel 1. The pressing roller 54, the tape adsorbing portion 55 that adsorbs the tip of the metal foil tape 3, and the rear tape pressing roller 56 that presses the metal foil tape 3 against the end surface a of the panel 1 are closer to the tape supply portion 35. Are arranged side by side in order. The front and rear tape pressing rollers 54 and 56 and the tape adsorbing portion 55 can be pressed and separated from the end surface a of the panel 1 by cylinders 54a, 56a and 55a, respectively. Further, the release paper peeling roller 45, the front tape pressing roller 54, and the tape adsorbing portion 55 are provided on an arm 58 that rotates around a vertical shaft 57 in the vicinity of the rear tape pressing roller 56, as shown in FIG. As described above, when the metal foil tape 3 is bonded to the end surface a of the panel 1 and the metal foil tape 3 is cut along the end of the panel end surface a, the arm 58 is rotated by the cylinder 59 so that the metal The foil tape 3 is separated from the panel end surface a, the rotating cutter blade 60 of the cutter unit 39 is raised, and the metal foil tape 3 is cut by the cutter blade 60 near the tip of the tape adsorbing unit 55.

  As shown in FIGS. 8 and 10, the tape affixing portion 38 is configured on the upper plate 61, and the upper plate 61 is connected to the slide plate 62 that slides on the table 31 via the linear guide 63. It is supported so as to be movable up and down, and can be positioned at an arbitrary height by a servo motor 64 and a ball screw mechanism 65. As shown in FIG. 8, the upper plate 61 of the tape sticking unit 38 and the upper plate 41 on the tape supply unit 35 and release paper winding unit 37 side are connected by a horizontal axis at a connecting unit 66, and the tie rod 67. By rotating the shaft of the arm 49 supporting the upper plate 41 by an interlocking mechanism using the arm 68, the upper plates 61 and 41 are moved up and down in conjunction with each other. Accordingly, when the servo motor 64 is driven to change the height of the tape affixing portion 38, the tape mounting shaft 40 and the release paper take-up shaft 43 slide up and down following this, and the height of the metal foil tape 3 changes. Is done. By changing the height of the metal foil tape 3 in this way, the length of the metal foil tape 3 that is bent to the upper surface side and the lower surface side of the panel 1 can be changed.

As shown in FIG. 8, the cutter unit 39 is configured on a mounting plate 69 provided to hang from the upper plate 61 of the tape attaching unit 38, and rotates the rotating circular cutter blade 60 and the cutter blade. A motor 70, a linear guide 71 that guides the cutter blade 60 and the motor 70 so as to move up and down integrally, and a cylinder 72 that moves the cutter blade 60 up and down are provided.
The configuration of the right unit 11a has been described above, but the configuration of the left unit 11b is the same as this.

  Next, operation | movement of this tape sticking apparatus 9a is demonstrated. When a sensor (not shown) detects the panel 1 conveyed on the conveyor 17, the stopper upper and lower cylinders 23 are actuated to raise the stopper block 22, and the front end face of the panel 1 is locked to the stopper block 22 and the panel 1 is moved. 1 stops, and then the conveyor 17 stops. Next, as shown in FIG. 11, the right unit 11 a and the left unit 11 b move forward toward the center side, the centering cylinder 52 protrudes, and the centering rollers 53 contact the end faces a and a on both sides of the panel 1. The panel 1 is centered (the center line in the width direction of the panel matches the center line CL of the apparatus). Next, the cylinders 29a and 29b for the upper and lower pressure rollers 5a and 5b are protruded, and as shown in FIG. 11 (b), the long side edges 1a and 1a on both sides of the panel 1 are connected to the upper and lower pressure rollers 5a and 5a. 5b clamps. Next, the suction pad 7 is raised and sucked to the lower surface c of the panel 1. Thereafter, the centering roller 53 moves backward and leaves the panel end surface a. Through the above steps, the panel 1 is accurately positioned at a predetermined position and firmly held so as not to be displaced. At this time, the upper and lower pressure rollers 5a and 5b function as a part of the panel holding mechanism 2, and the pressure rollers 5a and 5b are pressed against each other by the force of the cylinders 29a and 29b, but the lower pressure roller 5b is a cylinder for the lower pressure roller 5b. Since the size of 29b is larger than the size of the cylinder 29a for the upper pressure roller 5a, the upper pressure roller 5a is pushed back, and the panel 1 is held at a constant height with reference to the lower pressure roller 5b. . Since the suction pad 7 is covered with the cover 8 formed of a betting cloth, the panel 1 can be reliably prevented from being displaced, and the panel 1 is not damaged by the suction pad 7 at all.

  Next, the tape sticking unit 4 is operated, and the metal foil tape 3 is stuck on the end faces a, a on both sides of the panel 1 at the same time. The operation at this time will be described. As shown in FIG. 12 (a), the tape adhering portion 38 is initially in a position disengaged laterally from the panel end surface a, and the front and rear tape pressing rollers 54 and 56 and the tape The suction part 55 is in the retracted position. From this state, as shown in FIG. 12 (b), the tape adhering unit 4 slides to the left side until the tip of the metal foil tape 3 substantially coincides with the tip of the end surface a of the panel 1, and FIG. 12 (c). As shown in FIG. 5, the front tape pressing roller 54 and the tape adsorbing portion 55 are protruded by the cylinders 54a and 55a and pressed against the panel end surface a, whereby the front end portion of the metal foil tape 3 is bonded to the panel end surface a. Next, after the tape adsorbing portion 55 is retracted, as shown in FIG. 12D, the tape adhering unit 4 slides to the left side to the position where the rear tape pressing roller 56 is hooked on the panel end surface a. The tape pressing roller 54 is moved backward, and the rear tape pressing roller 56 is pressed against the panel end surface a. Thereafter, as shown in FIG. 12 (e), the tape adhering unit 4 slides to the left side, and at this time, the metal foil tape 3 is continuously supplied from the tape supply unit 35, and the metal foil is fed by the rear tape pressing roller 56. The tape 3 is affixed on the panel end surface a. When the rear tape pressing roller 56 approaches the terminal side of the panel end surface a, the sliding of the tape applying unit 4 is temporarily stopped, and the arm 58 is rotated to turn the metal foil tape 3 as shown in FIG. Is separated from the panel end surface a, and the cutter blade 60 is raised to cut the metal foil tape 3. Thereafter, as shown in FIG. 12 (g), the arm 58 is returned to the original position, the tape adhering unit 4 is further slid leftward, and the end of the cut metal foil tape 3 is moved to the panel by the rear tape pressing roller 56. Affixed to the end surface a.

  Next, the cylinders 29a and 29b are operated to move the right unit 11a and the left unit 11b backward while the upper and lower pressure rollers 5a and 5b are separated from the panel 1. Next, as shown in FIG. 13A, the cylinders 29a and 29b are operated so that the upper and lower pressure contact rollers 5a and 5b are close to each other. At this time, a gap s smaller than the panel thickness t is vacant between the upper and lower pressure contact rollers 5a and 5b. Thereafter, the right unit 11a and the left unit 11b are moved forward so that the upper and lower pressure contact rollers 5a and 5b sandwich the long side edge 1a of the panel 1 so that the portion of the metal foil tape 3 protruding from the end surface a of the panel 1 is removed. Bend and attach to the upper and lower panels b and c. At that time, as shown in FIG. 13 (b), before the press rollers 5a and 5b sandwich the panel 1, the metal foil tape 3 is provided by brushes 6a and 6b provided on the side of the forward side of the press rollers 5a and 5b. Is bent in advance to about 45 °, the metal foil tape 3 can be securely bent and brought into close contact with the long side edge 1a of the panel 1. Further, the lower pressure roller 5b is formed in a drum shape in which the diameter of the central portion is slightly larger than the diameter of the end portion, so that the pressure roller 5b is formed at the central portion of the pressure roller 5b due to the bending of the pressure roller 5b. Since the pressure exerted on the panel 1 can be prevented from being reduced, and the surface of the upper pressure roller 5a is softer than the surface of the lower pressure roller 5b, as shown in FIG. Since the surface of the upper pressure roller 5a is crushed and tries to adhere to the panel 1 in a wide range, it is possible to apply pressure evenly to the panel 1 from the entire length of the upper and lower pressure rollers 5a and 5b. The whole can be reliably affixed without causing wrinkles on the upper and lower panels b and c.

Furthermore, by forming the pressure rollers 5a and 5b in a drum shape, as shown in FIG. 14, when the pressure rollers 5a and 5b sandwich the panel 1, the central portions of the pressure rollers 5a and 5b are directed toward both ends. As a result, a force f that stretches the metal foil tape 3 is generated, thereby enhancing the effect of preventing the metal foil tape 3 from being wrinkled.
The drum-like degree of the pressure rollers 5a and 5b (how much larger the diameter of the central portion is than the diameter of the end portion) may be adjusted as appropriate according to the total length of the metal foil tape 3 to be attached, etc. However, when the drum-shaped degree is made stronger than that, not only the lower pressure roller 5b but also the upper pressure roller 5a is formed in a drum shape. In this case, the above effect is increased.

After the application of the metal foil tape 3 to the long side edges 1a, 1a of the panel 1 through the above steps, the panel holding mechanism 2 releases the panel 1 and the conveyors 17, 10b, 10c shorten the panel 1. It conveys to the side tape sticking apparatus 9b, and sticks the metal foil tape 3 to the short side edge parts 1b and 1b of the panel 1 like the long side edge parts 1a and 1a in the end side tape sticking apparatus 9b. .
According to this apparatus, simply by supplying the panel 1 to the carry-in conveyor 10a, the metal foil tape 3 can be automatically applied to the four peripheral edges of the panel 1, and the short time of 1 to 2 minutes per panel. Tape can be attached in time.
In addition, since the right unit 11a, the left unit 11b, the tape application unit 4, and the stopper device 18 are moved by a servo motor and a ball screw mechanism, the tape application devices 9a and 9b can be changed by changing the stroke of each part. Responding easily to panel 1 size changes.

  The present invention is not limited to the embodiments described above. The application of the present invention is not limited to the application of a metal foil tape to a plasma display panel, and the material of the panel and the tape is arbitrary.

It is a top view which shows the whole layout of a tape sticking apparatus. It is the front view which looked at the long side tape sticking apparatus from the X direction of FIG. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is EE sectional drawing of FIG. It is a top view of a tape sticking unit. It is a Y direction arrow directional view of FIG. 7 of a tape sticking unit. It is a top view of the tape sticking part in the state when cut | disconnecting a metal foil tape. It is DD sectional drawing of FIG. (A) is a top view which shows the state which hold | maintained the panel with the panel holding mechanism, (b) is the same side view. It is a top view which shows in order the procedure which affixes a tape on the end surface of a panel by a tape affixing unit. It is a longitudinal cross-sectional view which shows a mode that a press-contact roller bends the protrusion part of a tape, and affixes it on the upper and lower surfaces of a panel. It is a top view which shows the effect | action of the press-contact roller formed in the drum shape. (A) is a front view of the filter attached to the front surface of a plasma display, (b) is AA sectional drawing of (a). It is a perspective view which shows the procedure in the case of sticking the metal foil tape to a panel edge part by hand.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Panel 1a Panel long side edge 1b Panel short side edge 2 Panel holding mechanism 3 Metal foil tape (tape)
4 Tape affixing unit 5a, 5b Pressure roller 6a, 6b Brush (tape bending member)
7 Adsorption pad 8 Cover 9a Long side tape sticking device 9b End side tape sticking device a Panel end face b Panel top face (surface)
c Panel bottom (back)

Claims (7)

  A panel holding mechanism (2) for holding the panel (1), a tape attaching unit (4) for attaching the tape (3) to the end face of the panel while moving along the end face (a) of the panel, and a tape attaching unit ( 4) It is provided so as to be rotatable about an axis parallel to the moving direction of 4). After the tape (3) is stuck to the end surface (a) of the panel by the tape sticking unit (4), the moving direction of the tape sticking unit (4) By sandwiching the edge (1a) of the panel (1) while moving in a direction perpendicular to the surface, the portion of the tape (3) that protrudes from the end surface (a) of the panel is bent, and the front and back surfaces (b, c) of the panel And a pair of pressure contact rollers (5a, 5b) to be attached to the tape.   The at least one pressure contact roller (5b) of the pair of pressure contact rollers (5a, 5b) is formed in a drum shape in which the diameter of the central portion is larger than the diameter of the end portion. Tape applicator.   The tape application according to claim 1 or 2, wherein the surface of one of the pressure rollers (5a, 5b) is softer than the surface of the other pressure roller (5b). apparatus.   The tape adhering unit (4) and the pressure contact rollers (5a, 5b) are provided symmetrically with respect to the center line in the width direction of the panel (1), and the tape (3) is attached to the edges (1a, 1a) on both sides of the panel. The tape applicator according to claim 1, 2, or 3.   A flexible tape bending member (6a, 6b) is disposed adjacent to the lateral side of each pressure roller (5a, 5b) in the moving direction, and the pressure roller (5a, 5b) is a panel ( The tape applicator according to claim 1, 2, 3 or 4, wherein the tape bending member (6a, 6b) bends the tape (3) toward the front and back surfaces of the panel before sandwiching 1).   The panel holding mechanism (2) includes a plurality of suction pads (7) that are sucked to one surface (c) of the panel (1), and the suction pad (7) is covered with a cover (8) made of a betting cloth. The tape applicator according to claim 1, 2, 3, 4, or 5.   The tape applicator according to claim 1, 2, 3, 4, 5 or 6, wherein the tape applicator unit (4) is movable in a direction parallel to the thickness direction of the panel (1).

Images