JP2005082401A - Double-sided adhesive tape cutting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a double-sided adhesive tape cutting device for unwinding a double-sided adhesive tape while adhering the unwound end thereof to an adhered surface and cutting it to a required length. <P>SOLUTION: This double-sided adhesive tape cutting device comprises first and second rollers rotating according to the unwinding of the tape while adhering to one surface of the tape unwound from a double-sided adhesive tape reel. The device also comprises a double-sided adhesive tape cutter supporting a second roller movably in a direction apart from the first roller and interposed between the first roller and the second roller. The tape cutter comprises a cam means moving the second roller in a separating direction when it is interposed between the first and second rollers to tense the tape between the first and second rollers. The tensed portion of the tape is cut off with the edge of the tape cutter. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a double-sided pressure-sensitive adhesive tape cutter for unwinding and cutting to a required length while adhering the unwinding end of the double-sided pressure-sensitive adhesive tape to a surface to be bonded.

Technical background

Conventionally, a double-sided adhesive tape has been known to have a roll-shaped tape reel with release paper adhered to the outer surface of the double-sided adhesive tape to make it easier to pull out when in use. The necessary length of unwinding from the reel is cut with scissors, and the release paper is peeled off after bonding to the surface to be bonded, but it takes time and requires a release paper with the same length as the double-sided adhesive tape. Cost is high. If there is an appropriate cutter for double-sided adhesive tape, it does not require release paper and is convenient because the cost is low. However, since the target tape is double-sided adhesive tape, the principle of a conventional single-sided adhesive tape cutter is applied. It is difficult to develop it.

The present invention provides a double-sided adhesive tape cutter that drastically improves the above problems. This cutter has a first roller and a second roller that adhere to one surface of the double-sided adhesive tape unwound from the double-sided adhesive tape reel and rotate following the unwinding of the tape. A double-sided adhesive tape cutter that is supported so as to be movable in the separation direction from one roller and intervenes between the first roller and the second roller. The tape cutter separates the second roller when intervening between the first and second rollers. It is provided with cam means for moving in the direction and tensioning the double-sided adhesive tape between the first and second rollers, and cutting the blade edge of the tape cutter into the tensioned double-sided adhesive tape portion. The edge part of the cut | disconnected double-sided adhesive tape has a structure provided with a double-sided adhesive tape winding prevention stick | rod as prevention of entrainment to a 2nd roller.

An embodiment of a double-sided pressure-sensitive adhesive tape cutter according to the present invention will be described in detail with reference to FIGS. As shown in FIG. 1, the tape holder (8) has a reel (18) on which a double-sided pressure-sensitive adhesive tape (9) is rewound in a multiplex manner. An intermediate roller (7), a first roller (1), and a second roller (6) are provided near the front end of the tape holder (8). The first and second rollers (1) and (6) are arranged side by side in the tape feed opening (13) opened at the lower surface of the front end of the tape holder (8), and the intermediate roller (7) is the second roller (6). And the reel (18) and above the second roller (6). A tape cutter (4) is provided on the first and second rollers (1) and (6) so as to be movable up and down. The second roller (6) is supported so as to be movable away from the first roller (1), and the first roller (1) is provided so as to be capable of rotating at a constant axis. A guide pin (6a) is erected at the center of the second roller (6), the guide pin (6a) is slid into a long hole (15) provided on the tape holder (8) side, and the second roller (6) The lateral movement is guided and the movement amount is limited.

As shown in FIG. 2, the tape cutter (4) is supported by a cutter guide (8a) attached to a casing forming a tape holder in a vertical motion, and a blade edge of a flat blade (16) attached to the lower end of the tape cutter (4). An end portion opposite to (12a), that is, an upper end of the tape cutter (4) is projected out of the casing to form a push operation portion (3).
The casing is provided with a return spring (2) that engages with the tape cutter (4), and the tip of the nuclear spring (2) is engaged with a spring receiver (17) provided on the tape cutter (4). The cutter (4) is pushed upward.
When the tape cutter (4) is pushed up, that is, when it is lifted, the flat blade (16) stands by in a state of intervening between the first and second rollers (1) and (6).
At this time, the second roller (6) and the flat blade (16) are slightly separated.

As shown in FIG. 3, at the lower end of the tape cutter (4), the second roller (6) intervenes between the first and second rollers (1) and (6) when the cutter is lowered (before the tape is cut). Is provided with a cam portion (5) that is pressed away from the first roller (1). In the claw wheel (10) concentrically attached to the second roller (6), the cam portion (5) intervenes between the first and second rollers (1) and (6), and the second roller (6) is separated. When the second roller (6) is moved, the second roller (6) is prevented from rotating by engaging with a claw (14) provided at the end of the defining wall of the tape feeding opening (13) of the double-sided adhesive tape (9).

As shown in FIG. 1, the double-sided adhesive tape (9) unwound from the double-sided adhesive tape reel (18) is hung on the arc surface of the intermediate roller (7), and further on the second roller (6) before the second roller ( 6) The bridge is extended between the vicinity of the bottom dead center and the vicinity of the bottom dead center of the first roller (1). Therefore, the double-sided pressure-sensitive adhesive tape (9) has one surface on the peripheral surface (arc surface) of the intermediate roller (7) and the other surface on the bottom surface of the second roller (6) (arc surface) and the first roller ( 1), the roller (7) (6) (1) is rotated in accordance with the same adhesive force. The tape portion (9a) extending between the intermediate roller (7) and the second roller (6) smoothly moves the second roller (6) laterally while swinging left and right with the intermediate roller (7) as a fulcrum.

The blade (12a) of the tape cutter (4) intervening between the first and second rollers (1) and (6) is composed of a flat blade (12) as shown in FIG. It has a cutting edge (12a) and has a slit (12b) that opens at the apex of the chevron-shaped cutting edge (12a).

As shown in FIG. 2, a tape roll-in preventing bar presser (19) is provided in the middle of the intermediate roller (7) and the second roller (6) on the side wall of the tape holder (8).
As shown in FIG. 8, the entanglement prevention rod (19a) supported by the (19) has a tape entanglement prevention rod guide groove (6b) at the center of the peripheral surface of the second roller (6), and guides the groove. As shown, the tape cutter (4) extends to just before the cutting edge (12a). This tape winding rod has elasticity and is movable with the second roller (6).

The operation will be described below to clarify the configuration.
As shown in FIG. 2, one surface of the double-sided pressure-sensitive adhesive tape (9) unwound from the double-sided pressure-sensitive adhesive tape reel is unwound while being bonded to the intermediate roller (7), and the second roller (6) passes through this intermediate roller (7). ) And the other surface of the double-sided adhesive tape (9) is adhered to the lower surface (bottom dead center) of the second roller (6), and the second roller (6) is moved by the tape adhesive force while rotating. Guided by the long slot (15) for approaching the flat blade (12), a slight space is maintained between the flat blade (12) and the second roller (6) due to the restriction of the long slot for movement (15).

Next, as shown in FIG. 3 and FIG. 4, hold the tape holder (8) by hand, tilt it forward, press the first roller (1) against the adherend surface, and press the tape against the adherend surface. Then, the tape holder (8) is moved backward to stick the tape to the adherend surface for a required length while unwinding the tape.

Next, as shown in FIG. 5, the push operation part (3) is pushed with a finger to push down the tape cutter (4) in the direction of the arrow, and the second roller (6) is separated from the first roller (1) by the cam part (5). The tension state of the tape portion (9a) to be crosslinked and bonded between the first and second rollers (1) and (6) is formed.
At this time, as shown in FIG. 6, the push operation part (3) is further pushed down in the direction of the arrow, and the blade edge of the flat blade ( Cut and cut 12a). The second roller (6) keeps the tension of the tape portion (9a) by the claw (14) being engaged with the claw wheel (10) at the lateral movement end by the pressing of the cam portion and being prevented from rotating. The first roller (1) is rotated backward while being pressed against the adherend surface, and the end of the double-sided adhesive tape (11) is adhered to complete the tape attachment to the adherend surface.

As shown in FIG. 6, the cut end portion (9a) of the double-sided adhesive tape loosens and returns to the upper direction and adheres to the entanglement prevention rod to prepare for the next affixing operation.

          It is a partial cross section front view of this invention.           It is a cross-sectional front view of a double-sided pressure-sensitive adhesive tape bonding drawer partly enlarged.           It is a partial cross section front view of double-sided adhesive tape adhesion drawer initial expansion.           It is a partial cross section front view which shows an Example.           It is a partial cross section front view just before a double-sided adhesive tape adhesion | attachment drawer tape cutting.           It is a partial cross section front view of double-sided adhesive tape cutting.           It is a front view of a flat blade.           It is sectional drawing of prevention of double-sided adhesive tape entrainment.

Explanation of symbols

1: First roller 2: Plate spring 3: Push operation unit 4: Tape cutter 5: Cam unit 6: Second roller 6a: Guide pin 6b: Tape entrainment prevention rod guide groove (FIG. 8)
7: Intermediate roller 8: Tape holder 8a: Cutter guide 9: Double-sided adhesive tape 9a: Tape part 10: Claw wheel 11: Unfolded double-sided adhesive tape 12: Flat blade 12a: Cutting edge 12b: Slit (FIG. 7)
13: Tape feed opening 14: Claw 15: Long hole for moving the roller 17: Plate spring support 18: Double-sided adhesive tape reel 19: Tape entrainment prevention bar presser (Fig. 8)
19a: Tape entrapment prevention rod (〃)

Claims (4)

  A first roller and a second roller that rotate while following the unwinding of the tape while adhering to one surface of the double-sided adhesive tape unwound from the double-sided adhesive tape reel are arranged side by side, and the second roller is moved from the first roller. A double-sided adhesive tape cutter is supported so as to be movable in the separation direction and intervenes between the first roller and the second roller. The tape cutter moves the second roller in the separation direction during the intervention between the first and second rollers. A double-sided adhesive comprising a cam means for moving and tensioning the double-sided adhesive tape between the first and second rollers, and cutting the blade edge of the tape cutter into the tensioned double-sided adhesive tape portion. Tape cutter.   The double-sided pressure-sensitive adhesive tape cutter according to claim 1, further comprising a stopper that engages with the second roller moved in the separating direction to prevent rotation.   The double-sided pressure-sensitive adhesive tape cutter according to claim 1, wherein the blade of the tape cutter comprises a flat blade, the flat blade has a chevron-shaped cutting edge, and has a slit opened at the apex of the chevron-shaped cutting edge.   2. The double-sided pressure-sensitive adhesive tape cutter according to claim 1, wherein the cut end portion of the double-sided pressure-sensitive adhesive tape has an entanglement preventing rod for preventing the wrapping of the second roller.

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