JPH0521339Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electric tape cutter, and more particularly to an electric tape cutter that automatically feeds out a fixed length of adhesive tape.

[Conventional technology]

Conventionally, an electric tape cutter has a tape roll support section that loads and supports an adhesive tape roll, a tape delivery mechanism that sends out the adhesive tape from the adhesive tape roll, and a drive motor that drives the tape delivery mechanism.
Generally, a blade for cutting the adhesive tape sent out from the tape sending mechanism and a power supply section for supplying power to the drive motor are configured independently.

For example, in the electric cutter that feeds adhesive tape to a fixed length disclosed in Japanese Utility Model Publication No. 49-40058,
The adhesive tape roll was loaded and supported on a rotating roller that was rotatably attached to the device body, and when the adhesive tape roll was loaded on the rotating roller, the adhesive tape roll protruded greatly from the device body. .

[Problem that the invention attempts to solve]

In the conventional electric tape cutter mentioned above, a tape roll support part was specially provided to load and support the adhesive tape roll, which made the adhesive tape roll loading mechanism complicated and wasted space for arranging the tape roll support part. There was a problem in that the main body of the device had to be enlarged as it was used for

In view of the above-mentioned points, an object of the present invention is to fit the adhesive tape roll to the outer periphery of the drive motor to load and support the adhesive tape roll when the inner diameter of the center hole of the adhesive tape roll is larger than the outer diameter of the drive motor. Another object of the present invention is to provide an electric tape cutter that achieves miniaturization of the main body of the device.

[Means for solving problems]

The electric tape cutter of the present invention is characterized in that the adhesive tape roll is loaded by fitting the central hole of the adhesive tape roll onto the outer periphery of the drive motor.

[Effect]

In the electric tape cutter of the present invention, the adhesive tape roll is loaded by fitting its center hole to the outer periphery of the drive motor, which simplifies the adhesive tape roll loading mechanism and saves adhesive tape roll loading space. , miniaturization of the device is achieved.

〔Example〕

Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a partially broken right side view of an electric tape cutter according to an embodiment of the present invention. Rectangular parallelepiped housing 1 of the electric tape cutter of this embodiment
A drive motor 2 is attached to a partition wall 3 (see FIG. 3) at a lower central position within the housing halves 1A and 1B. The outer diameter of the drive motor 2 is selected to be slightly smaller than the inner diameter of the core of the adhesive tape roll 40 made of a small roll of adhesive tape 4, and the drive motor 2 itself serves as a loading shaft for the adhesive tape roll 40. ing. That is, the adhesive tape roll 40 is loaded by fitting its center hole to the outer periphery of the drive motor 2.

Electrode terminals 2a and 2b are exposed on the right end surface of the drive motor 2, and conductor plates 5a and 5b attached to the inner surface of the housing half 1B are in contact with these electrode terminals 2a and 2b. has been done. The conductor plates 5a and 5b are connected to the housing half 1
It is connected to the positive and negative electrodes of two AA dry batteries (hereinafter simply referred to as dry batteries) 6A and 6B housed in B, respectively. The cathodes and positive electrodes of dry batteries 6A and 6B are connected to other conductor plates 7A and 7.
The conductor plates 7A and 7B are connected to the contacts 8A and 8B and the leads 9A and 9.
It is connected to the limit switch 10 via B.

On the other hand, as shown in FIG. 4, the output shaft 2c of the drive motor 2 passes through the partition wall 3 and extends into the gear chamber, and the output gear 11 is attached to the tip. The output gear 11 is rotatably attached to the partition wall 3 and is interlocked with a pull-out gear 15 and a delivery gear 16, respectively, via two-stage gears 12, two-stage gears 13, and a drive gear 14, which constitute a reduction gear mechanism. are engaged.

The drawer gear 15 is attached to a rotary shaft 17 that extends through the partition wall 3 and is rotatably supported.
A pull-out roller 18 is attached to the rotating shaft 17 on the opposite side of the pull-out gear 15 via the partition wall 3 . Further, the delivery gear 16 is attached to a rotary shaft 19 that penetrates the partition wall 3 and is rotatably supported. A roller 20 is attached.

The extraction gear 15 is formed to have a larger diameter than the delivery gear 16, and both gears 15 and 16 are meshed with the same drive gear 14, so that the rotation shaft 1
The rotational speed of the rotating shaft 9 is faster than that of the rotating shaft 17.

As shown in FIG. 7, the pull-out roller 18 is composed of four disks each having knurling on the outer circumferential surface and connected at the center so as to be spaced apart from each other by a constant interval. Further, the delivery roller 20 is also constructed by connecting three discs having knurling on their outer circumferential surfaces so as to be spaced apart from each other at a constant interval. 3 between the four discs of the pull-out roller 18
The three discs of the delivery roller 20 are arranged to fit into each of the two gaps, thereby preventing the adhesive tape 4 from being rolled into the drawing roller 18.

The outer diameter of the pull-out roller 18 is selected to be slightly larger than the outer diameter of the delivery roller 20, but since the rotational speed of the rotating shaft 19 is faster than the rotational speed of the rotating shaft 17 as described above, The circumferential speed of the pulling roller 20 is set to be slightly faster than the circumferential speed of the pulling roller 18.

Further to the right of the pull-out roller 18 of the rotating shaft 17, a rotating claw member 21 (see FIG. 6) having a pair of claws 21a and 21b projecting outward is rotatably integrated with the rotating shaft 17. and is attached so as to be slidable in the axial direction of the rotating shaft 17.

An elastic biasing member 22 is attached to the rotating claw member 21 so that it slides integrally with the rotating shaft 17 in the axial direction and is rotatably separate from the partition wall. The rotary shaft 17 is arranged so that it can be slid only in the axial direction of the rotary shaft 17 by a stopper 23 provided integrally with the rotary shaft 17 .

The elastic biasing member 22 is housed within an arcuate wall portion 3a that is integrally formed with the partition wall 3 (see FIG. 2), and is in contact with the continuous feed operation member 24 that is fitted into the arcuate wall portion 3a. being touched.

In the continuous feed operation member 24, the elastic force of the elastic biasing member 22 is increased by a hooking portion 24a provided integrally being engaged with a guide hole (not shown) drilled in the arcuate wall portion 3a. movement is regulated.

When the continuous feed operation member 24 is pressed, as shown in FIG. 8, the rotary claw member 21 slides in the axial direction of the rotating shaft 17 together with the elastic biasing member 22, and is pressed against the claw portions 21a and 21b. The engagement with the member 25 is disengaged.

As shown in FIG. 2, the pushing member 25 is composed of a plate in which two horizontal elongated holes 25a and 25b and one vertical elongated hole 25c are bored. A guide shaft 26a (see FIG. 6) embedded in the link member 26 is inserted through the link member 26.
Further, a guide shaft 27a (see FIG. 6) protruding from the support member 27 is inserted into the elongated hole 25b, and a guide shaft 28a (see FIG. 6) protruding from the blade mounting member 28 is inserted into the elongated hole 25c. (see Figure 6) has been inserted through it.

A pushing piece 25d that projects downward is formed near the rear end of the pushing member 25, and this pushing piece 25d can engage with the claws 21a and 21b of the rotating claw member 21. It's becoming like that. Further, a stepped portion in the middle of the lower side of the pushing member 25 has an actuating portion 25e that engages with the actuating piece 10a of the limit switch 10.
It is becoming.

As shown in FIG. 6, the link member 26 has a base portion pivotably supported by a support shaft 3b integrally formed with the partition wall 3, and a guide shaft 26 near the free end.
A is planted. Further, a long hole 26b is bored in the middle of the link member 26, and a long hole 26b is formed in the middle of the link member 26.
A guide shaft 27b protruding from 7 is inserted through the guide shaft 27b.

The support member 27 is swingably supported by a support shaft 3c formed integrally with the partition wall 3, and has an elastic piece 27c extending diagonally downward and backward, and integrally protrudes from the partition wall 3. It is locked to the locking pin 3d. In addition, the support portion 27d extends toward the front.
, there is a support shaft 2 integrally provided with a blade mounting member 28.
8b, and as shown in FIG.
The shaft portions at both ends of the presser roller 29 are movably inserted into the interior e. Further, as shown in FIG. 5, an adhesive tape 4 is placed near the middle of the support member 27.
A reverse winding prevention protrusion 27f is integrally formed to prevent reverse winding during cutting.

The blade attachment member 28 has a blade 30 attached to the back side thereof diagonally downward with screws or the like. Further, a press roller 2 is provided inside the blade mounting member 28.
9 from above and press the press roller 2.
A pressing piece 28c is formed to press the roller 9 into contact with the delivery roller 20.

Since the electric tape cutter of this embodiment cuts the adhesive tape 4 while feeding the adhesive tape 4 between the pull-out roller 18 and the delivery roller 20, the blade 30 cuts the adhesive tape 4 so that the cut end of the adhesive tape 4 is In order to reduce the slanting, it has a structure in which three slanted blades are arranged side by side as shown in Fig. 7.

In FIGS. 1 to 8, reference numeral 31 indicates a claw member fixed to the support member 27 to prevent reverse winding of the adhesive tape 4, and reference numeral 32 indicates a claw member for preventing reverse winding of the adhesive tape 4.
The claw members for preventing the adhesive tape 4 from being caught are shown rotatably attached to the rotating shaft 19 between the disks of the figure.

Next, the operation of the electric tape cutter of this embodiment configured as described above will be explained.

As shown in FIG. 2, in the electric tape cutter, the claw portion 21a or 21b of the rotating claw member 21 comes into contact with the pushing piece 25d of the pushing member 25, and the pushing member 25 is pushed forward by the claw portion 21a or 21b. In the activated state, the operating piece 10a of the limit switch 10 is no longer pressed, and the power supply to the drive motor 2 from the dry batteries 6A and 6B is cut off and stopped. In this stopped state, the adhesive tape 4 has been cut by the blade 30, and a certain length of the adhesive tape 4 is waiting for the user to take it out.

From this state, when the user picks up the adhesive tape 4 and pulls it out slightly upward, the support member 27 resists the elasticity of the elastic piece 27c via the claw member 31 for preventing reverse winding. It is rotated slightly upwards about 3c. Then, the blade attachment member 28, the link member 26, and the pushing member 25 linked to the supporting member 27 are also moved, and in particular, the pushing member 25 is moved so that the pushing piece 25d is moved as shown by the two-dot chain line in FIG. It moves over the claw portion 21a or 21b of the rotating claw member 21 and returns to the rear position.

As a result, the actuating piece 10 of the limit switch 10
a is pressed by the operating portion 25e of the pushing member 25, power is supplied to the drive motor 2 from the dry batteries 6A and 6B via the limit switch 10, and the drive motor 2 starts rotating.

When the drive motor 2 starts rotating, the rotational force of the drive motor 2 is reduced in speed and transmitted to the extraction gear 15 and the delivery gear 16 via the output gear 11, the two-stage gear 12, the two-stage gear 13, and the drive gear 14. , rotation axes 17 and 19 are rotated. When the rotating shafts 17 and 19 are rotated, the pull-out roller 1
8 from the adhesive tape roll 40 to the adhesive tape 4
At the same time, the adhesive tape 4 drawn out by the drawing roller 18 is pulled out by the feeding roller 20.
It is sent out towards the front side of the electric tape cutter.

As the rotating shaft 17 rotates, the rotating claw member 21 rotates and the next claw portion 21b or 21a rotates half a rotation, and the claw portion 21b or 21a collides with the pushing piece 25d of the pushing member 25. The pushing member 25 is pushed forward. Therefore, the blade attachment member 28 linked to the pushing member 25 rotates clockwise about the support shaft 28b, as shown in FIG.
The blade 30 enters the adhesive tape feeding path between the pull-out roller 18 and the delivery roller 20 and cuts the adhesive tape 4. At this time, both ends of the presser roller 29 are pushed down by the pressing piece 28c of the blade attachment member 28, so the presser roller 29 is strongly pressed against the delivery roller 20 via the adhesive tape 4 and presses the adhesive tape 4. Since the adhesive tape 4 is stretched between the pull-out roller 18 and the delivery roller 20 with tension applied by the delivery roller 20 having a high circumferential speed, the adhesive tape 4 is easily cut by the blade 30.

Immediately after cutting the adhesive tape 4, the pushing member 25 moves forward and the actuating piece 10a of the limit switch 10 is no longer pressed, and the power supply to the drive motor 2 from the dry batteries 6A and 6B is cut off, causing the drive motor to stop. Motor 2 stops. As a result, the electric tape cutter stops after feeding and cutting a fixed length of adhesive tape 4.

In addition, in the electric tape cutter of this example,
If it is desired to feed out the adhesive tape 4 of a desired length instead of the adhesive tape 4 of a fixed length, the continuous feed operation member 24 may be pressed. When the continuous feed operation member 24 is pressed, the rotary claw member 21 moves along the rotation shaft 17 through the elastic biasing member 22, as shown in FIG.
1b slides to a position where it cannot engage with the pushing piece 25d of the pushing member 25, and the operating portion 25e of the pushing member 25
remains in the position where it presses the operating piece 10a of the limit switch 10, so the drive motor 2 rotates continuously and the adhesive tape 4 is continuously fed out. If the pressing operation of the continuous feed operation member 24 is released when the required length of adhesive tape 4 has been fed out, the pressing operation member 24 returns to the normal position shown in FIG. 7 due to the elasticity of the elastic biasing member 22. hand,
Therefore, the rotating claw member 21 has the claw portions 21a and 21.
b is moved back to a position where it can engage with the pushing piece 25d of the pushing member 25. As a result, when the rotating claw member 21 continues to rotate and the claw portion 21a or 21b engages with the pushing piece 25d of the pushing member 25, the pushing member 2
5 is pushed, the limit switch 10 is turned off, and the feeding of the adhesive tape 4 is stopped.

[Effect of idea]

As explained above, the present invention simplifies the loading mechanism of the adhesive tape roll and simplifies the adhesive tape roll loading mechanism by fitting the center hole of the adhesive tape roll to the outer periphery of the drive motor to load the adhesive tape roll. This has the effect of saving roll loading space and downsizing the device.

[Brief explanation of the drawing]

Fig. 1 is a partially fragmented right side view of an electric tape cutter according to an embodiment of the present invention, and Fig. 2 is a right side view showing the electric tape cutter shown in Fig. 1 with the right side half of the casing removed. , FIG. 3 is a partially fragmented front view of the electric tape cutter shown in FIG. 1, and FIG. 4 is a partially fragmented front view of the electric tape cutter shown in FIG.
FIG. 1 is a partially fragmented left side view of the electric tape cutter shown in FIG. 1, FIG. 7 is a sectional top view of the main parts of the electric tape cutter shown in FIG. 1, and FIG. 8 is a right side view of the main parts of the electric tape cutter shown in FIG. FIG. 3 is a cross-sectional view of a main part showing the operation state of a continuous feed operation member in the illustrated electric tape cutter. In the figure, 1... Housing, 1A, 1B... Half housing, 2... Drive motor, 3... Partition wall, 4... Adhesive tape, 6A, 6B... Dry battery, 10... Limit switch, 10a... ... Actuation piece, 11 ... Output gear, 14 ... Drive gear, 15 ... Drawer gear,
16... Delivery gear, 17, 19... Rotating shaft, 1
8... Pull-out roller, 20... Delivery roller, 2
1...Rotating claw member, 21a, 21b...Claw portion, 2
2... Elastic biasing member, 24... Continuous feed operation member, 25... Pushing member, 25d... Pushing piece, 2
6... Link member, 27... Support member, 28...
Blade mounting member, 29... Pressing roller, 30...
Blade, 40...Adhesive tape roll.

Claims (1)

[Claims for Utility Model Registration] A tape feeding mechanism for feeding adhesive tape from an adhesive tape roll, a drive motor for driving this tape feeding mechanism, and a blade for cutting the adhesive tape fed from the tape feeding mechanism. What is claimed is: 1. An electric tape cutter comprising: a center hole of the adhesive tape roll that fits around an outer periphery of the drive motor to load and support the adhesive tape roll.