JPS5839747B2 - Adhesive tape supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an adhesive tape supply device, and more particularly to a device for forming a tab by folding back the free end of a supplied adhesive tape, and provides a convenient device that can form a tab at the same time as the adhesive tape is fed out. This is what I am trying to do.

Examples of the present invention will be specifically described below.

In FIGS. 1 and 2, a rotating drum 2 supporting an adhesive tape roll 1 is rotatably attached to a vertical wall 4 about a rotating shaft 3, and a delivery roller 5 for feeding the adhesive tape from the adhesive tape roll is mounted on a rotating shaft 6. It is rotatably mounted on a vertical wall.

The adhesive tape 1a fed out from the adhesive tape roll 1 passes through a guide roll 7 and is stuck to the outer peripheral surface of a delivery roller 5 with an adhesive layer of the tape, and its free end is folded back to form a knob 8.

Four recesses 9 are formed at equal intervals on the outer peripheral surface of the delivery roller 5, and the recesses are separated from the outer peripheral surface of the delivery roller in order to fold back the adhesive tape wound on the delivery roller. .

Pins 11 are swingably attached to both sides of the feed roller so that U-shaped knob forming arms 10 correspond to the respective recesses 9.
At the tip of the arm 10 there is a tape holder 12 extending parallel to the shaft 6 of the feed roller.

This tape holding part 12 is located between the front opening end 13 and the rear opening end 14 of the recess 9, and is located at least on the same plane as a line connecting both opening ends, or in a position that protrudes from an external force beyond the line connecting both opening ends. A tension spring 15 (compression spring is also possible) stretched between the roller 5 and the arm 10 in the direction of the front opening end (
direction of rotation of the feed roller).

A stopper 16 is fixed to the side surface of the feed roller 5, and by stopping the pull-forming arm 10 from being received by the stopper, a portion necessary for folding the tape 1a is formed between the tape holding portion 12 and the rear open end 14. forming an interval.

The claw 17 is swingably attached to the vertical wall 4 with a pin 18, and a compression spring 19 (also known as a tension spring) applies a rotational force to relatively approach the rear opening end 14 of the hook 9. A stopper 20 for preventing rotation is provided to protrude from the vertical wall 4.

When the pawl 17 is engaged with the stopper 20, the tip 17a of the pawl is in the rotation orbit of the protrusion 23 of the arm 10 and is on standby.

In FIG. 1, the claw 17 presses the arm 10 against the rear open end 14 of the recess 9 to form the knob 8, and the rear arm 10 is placed between the recesses in a position where it is pulled toward the front open end of the recess 9. The adhesive tape 1a stretched on the tape is held via the adhesive layer of the tape.

In this state, when the knob 8 is pulled up to peel off the adhesive tape from the outer peripheral surface of the feed roller 5, the tape 1a is cut by the fixed cutter 22 while the presser roll 21 is lifted.

Next, when the feed roller 5 pushes the claw 17 away from the arm 10 against the spring 19 and starts rotating, the arm 10 pushes the claw 17 away from the arm 10.
It separates from the hole 9, rotates toward the front opening end 13 of the recess 9, stops at the stopper 16, and waits at a preparation position for forming the next knob.

At the same time, the arm 10 holding the tape hits the claw 17 and is stopped at that position, but as the roller 5 continues to rotate, the rear open end 14 of the recess 9 approaches the arm 10 and the knob 8 is formed and the roller 5 stops.

At the same time, the adhesive tape is stretched between the front and rear open ends 13 and 114 of the other recess 9 and on the holding portion 12 of the arm between them, and the adhesive tape is fed to the preparation position for forming a pinch.

The plate 24 is bent into an arc, and an L-shaped portion 25 from one end is fixed to the bottom 26 of the recess 9. A hook-shaped portion 27 from the other end of the plate is close to the tape portion between the recesses. are doing.

When the arm 10 rotates relative to the rear opening end 14 of the recess, this plate spring 24 is pushed by the arm and rotates in the same direction, causing the tape portion forming the knob 8 to hang downward. This works to prevent the bulge from forming and cause it to bulge upward, thereby forming the tsume even more reliably.

A notch 28 is formed in the side surface of the corner 9 on the side of the rear open end 14, and when the leaf spring is pushed into the notch, the arm 10 abuts against the rear open end 14, thereby ensuring the formation of a knob. .

As a drive means for the feed roller 5, as shown in FIGS. 3 and 4, a pulley 30 is rotated by a constantly rotating motor 29, and the rotational force of the pulley is applied to a gear 32 via a clutch means 31. An idle gear 33 meshes with this gear, and a gear 34 meshes with this gear, and this gear 34 is fixed to the shaft 6 of the delivery roller and rotates the delivery roller.

Switching of the clutch means 31 is commanded by a limit switch 35, and an operating rod 36 for opening and closing the switch is connected to a shaft 37 of the presser roll 21, and the shaft 37 swings around a fixed center 39 via an arm 38. By moving, it performs up and down movement.

In FIG. 3, the lower end 40 of the actuating rod 36 is disengaged from the push button 41 of the switch, so that the feed roller 5 is stopped while the switch is open.

As the tape 1a is cut, the operating rod 36 rises via the presser roll 21 and descends again.
0 is guided over the button 41 by a guide 42 and a compression spring 43 (which can also be a tension spring or a leaf spring) and presses the button, closing the switch so that the roller 5 starts rotating.

A rotor 45 having four protrusions 44 arranged at equal intervals is fixed to the shaft 6, and when the feed roller rotates 90 degrees, the protrusions 44 push away the protrusion 46 of the actuating rod, so that the lower end 40 of the actuation is released from the button 41, opening the switch and thus stopping the delivery roller.

Of course, the switch 35 can also be used to open and close the motor circuit.

As another driving means, as shown in FIG. 5, a ratchet wheel 47 is fixed to the shaft 6 and connected to rotate together with the delivery roller 5, and one end of the manual lever 48 is loosely fitted onto the shaft 6.
A pawl 49 may be attached to the lever to intermittently rotate the roller as the lever reciprocates.

Alternatively, the tape cutter 22 may be attached to the lever 48 to cut the tape as the lever moves back.

As described above, the present invention provides the adhesive tape delivery roller 5
Even after the knob-forming arm 10 pivotally connected to the handle hits the pawl 17 and is stopped at that position, the delivery roller continues to rotate, and the outer periphery of the delivery roller is rotated relative to the delivery roller. Since the knob 8 is formed by folding back the part of the adhesive tape stretched between the rear opening end 14 of the recess 9 formed in the knob 10 and the knob forming arm 10, the adhesive tape can be fed out at the same time. A knob is formed on the tip for convenience.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view, FIG. 2 is a partially omitted plan view of the same as above, FIG. 3 is a front view, FIG. 4 is a partially omitted plan view, and FIG. 5 is a partially omitted plan view. It is a front view showing a modification of . 1 is an adhesive tape roll, 1a is an adhesive tape, 2 is a rotating drum, 4 is a vertical wall, 5 is a feed roller, 6 is a shaft 1.8
1 is a knob, 9 is a recess, 10 is a knob forming arm, 13 is a front opening end, 14 is a rear opening end, 15 is a tension spring, 16
17 is a stopper, 17 is a claw, 21 is a presser roll, 22 is a fixed cutter 24 is a leaf spring, 29 is a motor, 35 is a limit switch, 36 is an operating rod, and 45 is a rotor.

Claims (1)

[Claims] 1 A recess is formed on the outer circumferential surface of the tape feed roller, a grip forming arm is swingably attached to the side surface of the feed roller, and the tape holding portion at the tip of the grip forming arm is connected to the front opening end and the rear opening end of the recess. The forming arm is located in between and is at least on the same plane as the surface connecting both opening ends, or in a position protruding from an external force beyond that, and is always pushed in the rotational direction of the feed roller, and the forming arm is located within the rotating orbit on the side of the above-mentioned knob forming side. A claw is provided to stop the rotation in the feed direction of the knob, and the feed roller continues to rotate even after the knob forming arm is stopped by the claw, so that the rear opening end of the recess and the knob are rotated relative to the feed roller. An adhesive tape supply device characterized in that a tab is formed by folding back a tape portion between forming arms.