JP2606729Y2 - Roll strip drawer - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for automatically extracting a roll band such as toilet paper, resin packaging sheet and the like to cut it into a predetermined length, and more particularly to a structure of a cut portion thereof.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Laid-Open No. 57792/1982, Japanese Patent No. 3264/1994, and Japanese Patent Publication No. 16554/1991 disclose devices for automatically extracting and cutting toilet paper. Each of them has a portion for holding the roll paper, a drawer provided with a roller rotated by a motor or the like, and a cutting unit for cutting the drawn paper.

[0003]

In the above-mentioned conventional apparatus, there is shown a cutting mechanism in which a movable blade is disposed so as to translate or rotate with respect to a fixed blade, and the movable blade is moved by moving the movable blade. However, these devices cut only toilet paper,
Paper towels, wrapping sheets, etc., which are extremely thin, flexible and difficult to cut. Therefore, in order to surely cut them, it is necessary to provide a tension roller and a winding mechanism for applying sufficient tension to the paper below the cutting blade as shown in the above-mentioned document, which makes the mechanism complicated. However, there has been a problem that the device volume and the manufacturing cost increase due to the development. In view of the above problems, an object of the present invention is to realize a small-sized automatic cutting mechanism capable of reliably cutting a thin and flexible material with a simple structure.

[0004] In order to achieve the above object, the present invention adopts a support member for supporting a roll band, a drawer for pulling out the band from the roll band, and cutting the band drawn by the drawer. in the lead cutting apparatus of the roll band and a cutting means, said cutting means including a cutting line of the strip body
Look, the lower cut with the upper cutting plate having a lower surface along the cutting plane of the substantially horizontal, and on the cutting edge formed at the tip of its lower surface, the upper surface along the cutting plane intersecting the band body a plate, a lower cutting edge formed at the tip of its upper surface, at least one of the upper cutting plate or the lower cutting plate driven along said cutting plane,
Driving means for separated relatively against both cutting plates, and an elastic support means at least one of the upper cutting plate or the lower cutting plate movably elastically supported upward or downward relative to said cutting plane, the lower surface of the upper cutting plate is arranged both cutting plates so as to be positioned downward slightly from the upper surface of the lower cutting plate during separation of the two cutting plates, at least one of the upper cutting plate or the lower cutting plate before
Serial cutting plane obliquely upward or inclined guide surface which substantially matches the height position Rutotomoni <br/> both cutting blade is moved encounters downwardly provided for, that was encountered both cutting blades during the cutting
The point where the height is almost the same moves in the width direction of both cutting blades.
This is a roll band drawing and cutting device configured as described above. Here, it is preferable that the inclined guide surface is provided so as to be continuous with the lower surface of the upper cutting plate or the upper surface of the lower cutting plate, and abuts on the upper surface of the lower cutting plate or the tip of the lower surface of the upper cutting plate. It is preferable that the cutting blade is arranged so as to form a predetermined cutting angle, and an inclined guide surface is provided on the lower surface of the upper cutting plate or the upper surface of the lower cutting plate on the cutting start side.

[0005]

According to this means, when the upper cutting plate and the lower cutting plate approach each other, at least one of the two elastically supported by the inclined guide surface moves upward or downward, so that the upper cutting blade and the lower cutting blade are moved. Heights match, and reliable cutting is performed. The positional relationship between the two cutting blades is restored by the elastic force when the cutting blades are separated from each other after the cutting is completed. When the inclined guide surface is continuously provided on the lower surface of the upper cutting plate or the upper surface of the lower cutting plate, the positional relationship between the two cutting plates is directly defined, so that accuracy is easily obtained and assembly is easy. Also, when both cutting blades are arranged so as to perform cutting at a predetermined cutting angle, and an inclined guide surface is provided on the cutting start side, both cutting blades are at one end (cutting start side).
Since the cutting progresses while sequentially making point contact from the first to the other end, the cutting can be performed more reliably and with lower torque regardless of the accuracy of the shape and arrangement of the cutting blade.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of an apparatus for extracting and cutting a roll band according to the present invention; FIG. 1 shows the entire configuration of the present embodiment. A cover 2 having a viewing window 2a is hinged to the front surface of a case 1 so as to be openable and closable. The roll paper 3 is securely held by the support spring 17 and the bottom plate 18 attached to the back surface of the cover 2 until the end of use (3 'in the figure). The drive roller 4 and the pressing plate 19 are opposed to each other below the bottom plate 18, and the paper sandwiched therebetween is moved downward by the motor 15 rotating the drive roller 4 via the gear box 8 and the drive gear 9. Be withdrawn.

Below the drive roller 4, a cutting section 5 having a fixed cutting plate 5a and a movable cutting plate 5b is arranged, and the movable cutting plate 5b comprises a gear box 8, a driving wheel 10, and a link 57. It is attached to a movable plate 51 that is reciprocated in the left and right direction by a motor 15 via a crank mechanism. A stop plate 58 is attached to the movable plate 51. When the stop plate 58 comes into contact with the microswitch 11, the motor 15 stops. Below the cutting section 5 is a storage space 6 for the cut paper, and behind it a control circuit 7 is stored. Control circuit 7
Is connected to a battery 13 housed in a cover 12 provided at the lower front end of the case 1 and operation switches 16, 16 installed on the upper surface of the case 1. In addition, knob 14
Is for locking the cover 2.

The structure of the cutting section 5 will be described with reference to FIGS. The fixed cutting plate 5a having a substantially L-shaped planar shape is
Placed on a side plate 21 fixed to the inner surface of the case 1,
It is elastically supported by the pins 20 inserted into the three support holes 55 and the springs 22 wound around the shafts. The lower surface 50 of the fixed cutting plate 5a is a smooth surface,
The ridge on the lower surface 50 on the side of the movable cutting plate 5b (the portion corresponding to the right end of the L-shaped vertical bar) constitutes the fixed blade 50a. A guide groove 53 that contacts an end of the movable cutting plate 5b is formed on the lower surface 50 near the inside of the protrusion (a portion corresponding to the L-shaped horizontal bar) of the fixed cutting plate 5a, and the guide groove 53 is an inclined guide surface. Connect to 54. The inclined guide surface 54 rises from the bottom surface of the guide groove 53,
The height coincides with the height of the lower surface 50 at the position of the fixed blade 50a.

The movable cutting plate 5b has an upper surface 52 formed in a substantially smooth surface, and a ridge on the tip side thereof is a movable blade 52a. The movable blade 52a is installed non-parallel so as to have a fixed cutting angle with respect to the fixed blade 50a. The side of the upper surface 52 close to the fixed blade 50a slides on the guide groove 53 with the movement of the movable cutting plate 5b. Movable cutting plate 5
b, the movable plate 51 is fixed to the long holes 51a, 51b.
1 is slidably mounted on the fixed plate 23 via a pin 24 passing through the inside and a flat ring 25 fixed to the head, and is connected via a mounting bracket 56 on the lower surface thereof.
Are driven by a link 57 shown in FIG. The opening 51c is for avoiding the driving wheel 10.

Next, the operation of the cutting section 5 will be described with reference to FIGS. When the fixed cutting plate 5a and the movable cutting plate 5b are separated from each other, the end of the movable cutting plate 5b is housed in the guide groove 53 as shown in FIGS. 52a is above the fixed blade 50a by the depth of the guide groove 53. Next, when the movable cutting plate 5b starts moving and the tip portion comes into contact with the inclined guide surface 54, FIG.
As shown in FIG. 5B and FIG. 5B, one side of the fixed cutting plate 5a elastically supported is gradually pushed up. Further, when the tip of the movable cutting plate 5b exceeds the inclined guide surface 54, FIG.
As shown in (c), the fixed blade 50a and the movable blade 52a have the same height on the inclined guide surface 54 side, and when the two come into contact, the cutting of the paper is started from one end. After that, as the movable cutting plate 5b advances, FIGS.
As shown in (c), the fixed cutting plate 5a is pushed up toward the other end while the movable blade 52a contacts the fixed blade 50a. When the contact point between the movable blade 52a and the fixed blade 50a advances to the other end as shown in FIGS. 4E and 5D, the cutting of the paper is completed.

To achieve the same function as the fixed cutting plate 5a and the movable cutting plate 5b in the above embodiment, FIG.
Other structures shown in (d) to (d) may be used. FIG. 6 (a)
6 (b) is a perspective view showing another example of the fixed cutting plate 5a, and FIGS. 6 (c) and 6 (d) are perspective views showing another example of the movable cutting plate 5b. As shown in these examples, the inclined guide surfaces 54, 5
4 ', 54 ", 54'", 54 "" are fixed cutting plates 5a.
And the movable cutting plate 5b, and the inclination direction may be inclined in either the movable direction or the cutting direction or in both directions. Further, the inclined guide surface may be formed of a separate member from the fixed cutting plate 5a and the movable cutting plate 5b. A configuration in which the fixed cutting plate 5a is moved by being pressed by the plate 5b and translated or rotated may be used.

From the motor 15 to the drive roller 4 or the drive wheel 1
As shown in FIG. 7, the gear box 8 for transmitting power to the gear 0 includes a gear 81 meshing with the pulley 15a of the motor 15, a gear 82 fixed coaxially with the gear 81, a gear 83 meshing with the gear 82, and a coaxial gear therewith. The gear 86 fixed to the gear 84 meshes with the gear 84, and the gear 86, which is rotatably attached to the shaft of the gear 84 by the connecting piece 85, meshes when the gear 86 rotates counterclockwise, and transmits the rotation to the drive gear 9. A gear 87 meshes with the gear 87 when the gear 86 rotates clockwise, and a gear 89 fixed coaxially with the gear and transmitting rotation to the drive wheel 10.
Consists of

FIG. 7 schematically shows the control circuit 7 of this embodiment. A signal is generated from SW1 or SW2 when the operation switches 16 and 16 are pressed, and the signal is set as L1 or L2 of the RSFF. The output Q of L1 or L2 starts the timer T1 or T2, and supplies the normal rotation signal F to the drive circuit DC via the OR circuit O1. The normal rotation signal F stops when the timer T1 or T2 finishes counting, and the inverted output of the timer T1 or T2 is driven as the reverse rotation signal R via the AND circuit A1 under the output of the OR circuit O2 indicating the set state of L1 or L2. It is supplied to the circuit DC. When disconnection is completed and the microswitch 11 is turned on, a signal is generated from the LSW to reset L1 or L2, the reverse rotation signal R stops, the timer BT starts, and the brake signal B is supplied to the drive circuit DC for a predetermined time. . In this way, the timer T1 or T
The drive roller 4 pulls out the paper for a set time (for example, 6 seconds or 3 seconds), and then the motor 15 rotates in reverse to cut the paper,
When the disconnection is completed, the motor 15 is quickly stopped by the brake signal B.

[0014]

As described above, according to the present invention, the upper cutting plate or the lower cutting plate is elastically supported, and the inclined guide surface which matches the height of the upper cutting blade and the lower cutting blade according to the approach of both cutting plates is provided. Therefore, the following effects can be obtained.
Since a thin and flexible material can be reliably cut, the cutting section itself has a simple configuration, and a mechanism for applying tension to the cut material is not required. Therefore, the size and cost of the apparatus can be reduced. When the inclined guide surface is continuously provided on the lower surface of the upper cutting plate or the upper surface of the lower cutting plate, the positional relationship between the two cutting plates is directly defined, so that accuracy is easily obtained and assembly is facilitated. When both cutting blades are arranged so as to perform cutting at a predetermined cutting angle, and an inclined guide surface is provided on the cutting start side, cutting proceeds while the two cutting blades sequentially make point contact from one end to the other end. Therefore, cutting can be performed more reliably and with low torque.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a configuration of an embodiment of a roll band drawing and cutting device according to the present invention.

FIG. 2 is a front view showing a structure of a cutting section 5 in the embodiment.

FIG. 3 is a bottom view showing the structure of a cutting section 5 in the embodiment.

FIG. 4 is a side view showing a cutting operation of a cutting section 5 in the embodiment.

FIG. 5 is a front view showing a cutting operation of a cutting unit 5 in the embodiment.

FIG. 6 is a perspective view showing another example of a fixed cutting plate and a movable cutting plate in the cutting section 5;

FIG. 7 is an explanatory diagram showing a structure of the gear box 8 of the embodiment.

FIG. 8 is a circuit diagram showing a configuration of a control circuit 7 of the embodiment.

[Explanation of symbols]

4 Driving roller 5 Cutting section 5a Fixed (upper) cutting plate 5b Movable (lower) cutting plate
50a Fixed (upper cutting) blade 52a Movable (lower cutting) blade 53 Guide groove 54 Inclined guide surface 8 Gear box 15 Motor 20 Pin 22 Spring

Continuation of the front page (56) References JP-A-3-47217 (JP, A) JP-A-3-264016 (JP, A) JP-A-57-102397 (JP, U) JP-A-2-4494 (JP, A) , U) Japanese Utility Model Hei 2 220620 (JP, U) Japanese Utility Model Hei 3-3264 (JP, Y2) Japanese Utility Model 57-56792 (JP, Y2) (58) Fields surveyed (Int. Cl. ⁷ , DB Name) A47K 10/36

Claims (3)

(57) [Scope of request for utility model registration] 1. A roll band drawing and cutting device comprising : a support member for supporting a roll band; a drawing means for drawing the band from the roll band; and a cutting means for cutting the band drawn by the drawing means. cutting means, only contains the cutting line of the band body, and the band body
A cutting plate on which is provided a lower surface along the cutting plane of the substantially horizontal crossing, the upper cutting edge formed at the tip of its lower surface, a lower cutting plate having an upper surface along the cutting plane, of the upper surface a lower cutting edge formed at the tip, at least one of the upper cutting plate or the lower cutting plate driven along said cutting plane, driving means for separated relatively against both cutting plates, the upper cutting plate or the lower cut Elastic support means for elastically supporting at least one of the plates so as to be movable upward or downward with respect to the cutting surface, wherein the lower surface of the upper cutting plate is larger than the upper surface of the lower cutting plate when the two cutting plates are separated from each other. Both cutting plates are located slightly below
And, an inclined guide surface for substantially coincide with respect to at least one said cutting surface and the height position to encounter the oblique upward or Rutotomoni both the cutting blade is moved below the upper cutting plate or the lower cutting plate provided, during the cutting The two cutting blades meet at the same height
Roll strip pulling and cutting apparatus configured such that a portion to be moved moves in the width direction of both cutting blades . 2. The vehicle according to claim 1, wherein the inclined guide surface is
A roll band drawing / cutting device that is provided so as to be continuous with the lower surface of the upper cutting plate or the upper surface of the lower cutting plate, and is configured to abut on the tip of the upper surface of the lower cutting plate or the lower surface of the upper cutting plate. 3. The cutting blade according to claim 1, wherein the two cutting blades are arranged so as to form a predetermined cutting angle, and the inclined guide surface is provided on a lower surface of an upper cutting plate or an upper surface of a lower cutting plate on a cutting start side. Roll stripping and cutting device.