JPS6234923Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to an adhesive tape feeding device that attaches an adhesive tape while feeding it out and then cuts it to a desired length.

(Prior art) Conventionally, in this type of device, there is one in which a cutter is raised and lowered perpendicularly to the surface of the adhesive tape being fed out, and the entire surface of the tip of the cutter comes in contact with the tape to press it. If the distance is not long, the tape will loosen and cannot be cut reliably.
However, if the distance the cutter is raised and lowered is long, the tip of the cutter may protrude downward from the tape during cutting, and come into contact with the surface to which it is attached, causing damage.

For this reason, a cylinder cutter has been proposed that prevents damage to the surface to be adhered by rotating the cutter instead of raising and lowering it, but this method has a small intersecting angle between the cutter and the adhesive tape, so the entire surface of the tip of the cutter is The problem was that the tape would slide over the tape and could not be pushed through properly.

(Problem to be solved by the invention) The present invention improves this conventional drawback by directing the tip of the cutter perpendicularly to the length direction of the adhesive tape from one side edge of the tape to the other side edge. By crossing the tape, the entire surface of the cutter tip comes into contact with the tape and is pushed across, which prevents excessive protrusion of the cutter tip and damage to the surface to be adhered to, as well as preventing the cutter tip from slipping from the tape surface. The purpose of the present invention is to accurately cut the unwound adhesive tape by retracting the winding core at the time of cutting and tensioning the tape.

(Means for Solving the Problems) The present invention will be explained as follows using the symbols used in the drawings to make it easier to understand.

A pressing part 27 such as a pressing roll for pressing the adhesive surface of the tape against the surface to be adhered is provided at a tape feeding opening 2 of a case 1 for feeding out the adhesive tape T.

Then, between this pressing part 27 and the tape support cylinder 4 that rotatably supports the core of the adhesive tape, a direction perpendicular to the length direction of the adhesive tape, that is, from one side edge of the adhesive tape T to the other side edge. The cutter 20 is rotatably attached to the shaft 18 in the direction facing the direction of the adhesive tape T, and the cutter 20 is held outside the adhesive tape T feeding path by the spring 22, and the tape support cylinder 4 is connected to the tape feeding opening. It is provided so that it can move forward or backward toward 2.

An interlocking mechanism is provided between the pressing part 27 and the tape support tube 4 so that when the cutter 20 pivots forward about the shaft 18, the tape support tube 4 retreats in synchronism.

(Function) A roll body 29 in which adhesive tape T is wound around a cylindrical core is attached to the tape support cylinder 4 in the case 1,
When the tip of the tape is pulled out to the lower surface of the pressing part 27 through the feeding port 2 and the case 1 is moved backward while pressing the adhesive side of the tape against the surface to be pasted by the pressing part 27, the tape T is fed out and touches the surface to be pasted. Paste it on.

However, when the interlocking mechanism between the pressing part 27 and the tape support cylinder 4 is operated, the tape support cylinder 4 moves back and the tape between the tip of the tape pressed by the pressing part 27 and the tape support cylinder 4 becomes tense. The cutter 20 cuts the tape T by pivoting about the shaft 18 as a fulcrum against the spring 22 in a direction perpendicular to its length, that is, from one side edge of the adhesive tape T to the other side edge. .

Next, when the interlocking mechanism is restored to its old position, the cutter 2
0 rotates around the shaft 18 to the old position due to the elasticity of the spring 22, and the tape support cylinder 4 moves forward.
The cut end of the tape advances toward the lower surface of the pressing part 27.

(Embodiment) To explain the embodiment shown in the drawings, reference numeral 1 denotes a case, and a tape feeding opening 2 is opened at one end of the bottom thereof. Reference numeral 3 denotes a sliding plate that reciprocates along the left and right side plates of the case 1 toward the tape feeding port 2, and a tape supporting cylinder 4 is integrally erected on one side of the sliding plate, and an engaging piece 5 is mounted on the other side. stand out. 6 and 7 are parallel guide rails that engage with the upper and lower edges of the sliding plate 3, respectively, and are fixed to the side plates of the case 1.

Reference numeral 8 denotes an operating rod whose center part is pivotally supported on the side plate of the case 1 by a support shaft 9, and has a long hole 10 bored in its base end.
Loosely fit the engaging piece 5 into the holder. Reference numeral 11 denotes a push button integrally connected to the operating rod 8, the lower surface of which is connected to the leaf spring 12.
Press it upwards. Reference numeral 13 indicates a clamping piece that clamps the base of the leaf spring 12.

Reference numeral 14 denotes an operating pin provided at the tip of the operating rod 8, and a cam 15 is provided below the operating pin. 16 indicates a support shaft of the cam 15. Reference numeral 17 denotes a fixed plate connected at right angles to one side plate of the case 1. Along the plate surface, a cutter mounting body 19 is connected so as to be freely pivotable back and forth via a support shaft 18, and the arc-shaped cam surface of the cam 15 is connected to the cutter mounting body 19. body 1
Abuts on one end of 9.

Reference numeral 20 denotes a steel cutter fixed to the cutter attachment body 19, and extends freely in a direction that crosses the cutter slit 21 extending into the tape feeding port 2 from side to side. 22 is a spring wire wound around the support shaft 18, one end of which is connected to the cutter attachment body 19, so that the cutter 20 is always
It is held outside the adhesive tape feeding path at one end of the cutter slit 21 (FIG. 3). 23 is a stopper for positioning the cutter attachment body 19.

24 is a stopper for the sliding plate 3; 25 and 26 are tape guides connected to the sliding plate 3; 27 is a rubber pressing roll constituting a pressing section; and 28 is a leaf spring for braking the rotation of the tape winding core. Each is shown below.

Then, a tape roll body 29 in which the adhesive tape T is wound around a cylindrical core is rotatably mounted on the tape support tube 4, and the tape tip is passed between the tape guides 25 and 26 and then passed through the tape feeding port 2 to the press roll 27. Pull it out to the bottom surface and press the tape T with the pressure roll 27.
When the case 1 is moved backward while pressing the adhesive side on the surface to be adhered, the tape roll body 2
9 rotates and the tape T is fed out one by one.

When cutting the tape T, press the push button 11 against the leaf spring 12 with your fingertip.
The operating rod 8 pivots around a support shaft 9. As a result, the engaging piece 5 is pushed by the front end of the elongated hole 10 shown in FIG. get nervous.

When the push button 11 is pushed further downward, the operation pin 14 comes into contact with the cam 15, and the cam 15
6, and its cam surface moves the cutter attachment body 19 and the cutter 20 against the spring wire 22, and the third
The cutter 20 pivots clockwise in the figure using the support shaft 18 as a fulcrum, and thereby moves the tip of the cutter 20 in a direction perpendicular to the length direction of the tape T so that the tip of the cutter 20 almost follows the tape surface, removing the tensioned tape T. Cut from one side edge to the other side edge. At this time, the tip of the cutter 20 moves in an arc centered around the support shaft 18, but in reality, the distance it moves is short and is just the width of the tape, so there is no problem considering it moving in a substantially straight line. do not have.

Immediately after cutting, the tension in the tape T is released and the tape roll body 29 tries to rotate due to the reaction, but the leaf spring 28 contacts the outer periphery of the tape roll body 29 and brakes the rotation, so the cut end of the tape T The tape will not be drawn deep into the tape guides 25 and 26.

When you release your fingertip from the push button 11, the operating rod 8 is returned by the leaf spring 12, and the cutter 20 first rotates due to the spring wire 22 and returns to the old position, and then the elongated hole 10 moves forward and the rear end Since the engaging piece 5 is pushed, the sliding plate 3 moves forward toward the tape feeding port 2,
This allows the tip of the tape T to pass through the cutter slit 2.
1 to the lower surface of the pressure roller 27 to prepare for the next pasting operation.

In this manner, the tip of the tape T moves forward after the cutter 20 returns to one end of the slit 21, that is, outside the tape feeding path, so that the tip of the tape T smoothly advances to the lower surface of the pressure roll 27 without contacting the cutter 20.

(Effect of the invention) In short, in the present invention, the cutter 20 is provided so as to be rotatable by the support shaft 18 in a direction perpendicular to the length direction of the adhesive tape T, and the tip of the cutter 20 is set so as to be aligned with the tape surface. Since the tape T is cut across the tape from one side edge to the other side edge,
There is no risk of the tip of the cutter 20 protruding long below the tape T and damaging the surface to which it is adhered, as is the case with conventional elevating type cutters.Furthermore, when cutting the tape, the tape support cylinder 4 retreats and presses the tape T against the roll 27. , so that when the cutter 20 touches the side edge of the tape T, the tape T is not wrinkled, and since the cutter 20 crosses at a right angle from one side edge of the tape T to the other side edge, the cutter This produces the effect that the tape T can be cut accurately without fear of slipping from the tape surface as with conventional cylinder cutters.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of the entire adhesive tape feeding device embodying the present invention, FIG. 2 is a sectional view taken along line A--A in FIG. 1, and FIG. 3 is a side view of the main parts thereof. 1 is a case, 2 is a tape feeding port, 4 is a tape support tube, 18 is a spindle, 20 is a cutter, 22 is a spring, and 27 is a pressure roll.

Claims (1)

[Scope of utility model registration request] A pressure part such as a pressure roll that presses the adhesive surface of the tape against the surface to be adhered is provided at the tape feeding port that feeds out the adhesive tape, and this pressure part and a tape support tube that rotatably supports the core of the adhesive tape are provided. A cutter is pivotally attached to the center of the tape in a direction perpendicular to the length of the adhesive tape, and the cutter is held outside the adhesive tape feeding path by a spring, and the tape support tube is connected to the tape feeding opening. An adhesive tape feeding device which is provided so as to be able to move forward or backward toward the target, and has an interlocking mechanism interposed between the pressing part and the tape support cylinder so that the tape support cylinder retreats when the cutter rotates forward. .