JPH01244726A - Paper towel distributing machine - Google Patents

Abstract

PURPOSE:To prevent the head of a paper towel from being guided outside a feeding path even when it is curled by providing a pair of rollers in facing them in a feeding direction forward and backward in the course of the feeding pat of the paper towel and, simultaneously, in the vicinity of the drawing edge of the rolled paper towel, and stringing a belt between both rollers. CONSTITUTION:In the central parts of shafts 45 and 46, a feeding roller 47 and a drawing roller 48 of the same diameter is fixed in being faced. An endless belt 49 is strung between both rollers 47 and 48. A roller 62 is rotably shaft- supported to the head of the turning frame 60, and the roller 62 is pressed to the roller 47. A roller 70 is rotably shaft-supported in the head part of a turning frame 69, and the roller 70 is located in a position to be pressed to the roller 48 at a foreground side. In such a way, by arranging the feeding roller and drawing roller at the front side and rear side in a traveling direction in the course of the traveling path of a paper towel P, respectively, and stringing the endless belt between both, the towel cannot be detached from the feeding path.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a paper towel dispensing machine, and more particularly to a paper towel dispensing machine configured to prevent the ends of the paper towel from getting caught in the device. .

[Conventional technology] Various paper towel dispensing machines are known in the art.

This type of paper towel dispensing machine winds paper towels of a predetermined width into a roll with perforations inserted at predetermined intervals, and stores the paper towels in the device. It is so that it can be guided and cut.

In a paper towel dispensing machine that uses such paper towels, if the paper towels are not guided properly,
Accurate cutting is not possible.

Therefore, paper towel arrangements □ having various paper towel introduction paths have been proposed.

These paper towel dispensing machines are equipped with paper towel feed rollers and pull-out feed rollers, which serve as grooves that guide the rolled paper towels along a predetermined path to the usage position. function was being demonstrated.

[Problems to be solved by the invention] However, in the case of the paper towel dispensing machine shown in above), when the paper towels are initially set,
Even if you try to guide the paper towel along a predetermined path by driving the feed roller or pull-out feed roller, the paper towel will be curled up in a roll when it passes between the rows of rollers, so the paper towel will not be able to move between the rollers. There was a problem that they could get entangled or wedged in.

[Means for Solving the Problems] In order to solve the above-mentioned problems, in the present invention, in the middle of the paper towel feeding path and in the vicinity of the pull-out end of the rolled paper towel, A structure was adopted in which a pair of rollers was installed inside the rollers, and a belt was stretched between both rollers.

[Function] When the above-mentioned structure is adopted, the rolled paper towel passes over the belt stretched between a pair of rollers, so even if the tip of the paper towel is curled, the paper towel will not curl. The tip will not fit between the rollers and be guided out of the feeding path, preventing it from digging into the feed path.

[Example] Hereinafter, the present invention will be described in detail based on the example shown in the drawings.

FIGS. 1 to 12 illustrate one embodiment of the present invention, and FIGS. 1 and 2 are exploded perspective views of the main parts and the whole.

The paper towel dispensing machine according to the present invention is assembled with a base frame 1 as a reference.

The base frame 1 is formed as a quadrilateral frame from a metal plate, and includes a pair of left and right side plates 2.2, a bottom plate 3 that connects the front half between the lower ends of these, and a back plate that connects the rear edges. 4, and a top plate 5 that connects the upper ends of the side plates 2, 2.

In the vicinity of the lower part of the side plate 2.2 on the near side, projecting pieces 6 are cut and raised inward at right angles.

The bottom plate 3 has a horizontal part 7 on the back side and an oblique side 8 facing upward on the front side. A bent piece 7a is formed at the rear edge of the horizontal part 1 at a right angle upward. 8 is also formed with a lJ'i curved piece 8a at a right angle upward.

Further, a projecting piece 9 is provided on the upper surface of the oblique side 8 in parallel with the bent pieces 7a and 8a over the entire length. Projecting pieces 9a are protruded from both ends of the projecting piece 9, and a V-shaped notch 9b is formed at the center of the upper end of each projecting piece 9a.

Furthermore, protrusions 10 are vertically protruded on the upper surface of the oblique side 8 in front of the protrusion 9 and at both left and right ends,
A bent portion 10a is formed at the upper end of each projecting piece 10 horizontally toward the front side.

In addition, a quadrilateral notch 4a is provided at the center of the lower end of the back plate 4.
A bent piece 11.11 is formed on the lower edge of the back plate 4 horizontally toward the back side, sandwiching the notch 4a therebetween. The guide frame 12 is fixed using these bent pieces 11,11. The guide frame 12 is arranged facing downward on the near side, and a curved portion 12a is formed at the lower end thereof toward the rear. Further, at the upper portions of both the left and right ends of the back plate 4, elongated narrow portions 4b are provided at the upper end portions.
An opening 4C is formed.

On the other hand, the top plate 5 has a rectangular opening 5a formed in its center, and a transparent plate 5b is fixed to the lower surface of the top plate 5 so as to close this opening 5a. Therefore, this part serves as a viewing window for viewing the interior.

Also, projecting pieces 14 are provided at both ends of the front side edge of the top plate 5 to project vertically downward.

By the way, the back plate 4 of the base frame 1 is attached to the mounting plate 13.

The mounting plate 13 is formed as a quadrilateral dish-shaped frame, and bent pieces 15 and 16 are formed at right angles toward the front side at the top and bottom, and bent pieces 17 and 17 are formed at the left and right sides. ing.

At the center of the lower bent piece 16 is the notch 4 of the back plate 4.
A notch 16a is formed opposite to a.

In addition, protrusions 17a are formed toward the front side at the upper ends of the left and right bent pieces 17.17, and each protrusion 17a
A notch 17b is formed at the upper end to engage with the narrow portion 4b of the opening 4C of the back plate 4.

A keyhole-shaped opening 18 is formed near the upper edge of the mounting plate 13. A needle, screw, or the like fixed to a wall (not shown) is fitted into these openings 18 .

In addition, in order to attach the base frame 1 to the mounting plate 13, the bent piece 17
The folded piece 11.11 may be placed on the folded piece 16 by fitting it into the notch 17b at the upper end and the narrow part 4b of the opening 4C of the back plate 4.

J3, the through hole 14a formed near the lower edge of the mounting plate 13 is for securely fixing the mounting plate 13 to the wall surface with a needle or the like.

An intermediate frame 19 is accommodated within the base frame 1. The middle frame 19 is formed by press-molding a metal plate, and includes a back plate 20, left and right side plates 21,
21 is formed as a mouth-shaped frame with the right front side open.

As shown in FIGS. 7 to 9, the back plate 20 has an oblique side 22 bent toward the front at its upper end. Also,
The oblique side 2 that is also inclined towards the front side at the lower end of the back plate 20
3 is formed.

An opening 24 is formed in the center of the oblique side 23, and protrusions 25.2 are formed at right angles toward the front on the left and right of the upper end of the opening 24.
5 is provided protrudingly.

A shaft 26 is rotatably supported between the projecting pieces 25, 25, and one corner of a triangular rotating frame 27 is fixed to the center of the shaft 26. A permanent magnet 28 is fixed to the front corner of the rotating frame 27. Further, a shaft 29 is horizontally suspended across the frontage portion 24 and through the space defined by the triangular rotating frame 27, and limits the rotational limit of the rotating frame 27.

Further, a projecting piece 30 is provided near the lower side of the opening 24.
A reed switch 31 is fixed to this projecting piece 30 at a position where it can face the permanent magnet 28 .

Note that the lower end of the oblique side 23 is bifurcated toward the front side, and a horizontal portion 23a is formed on the upper side.

A strip-shaped projecting piece 32 is horizontally projected inside the lower end portions of the left and right side plates 21, 21, and a support frame 33 having an L-shaped cross section is provided on the inner edge of each projecting piece 32. It is protruding towards. Furthermore, an inclined plate 34 is continuously provided at the innermost end of each projecting piece 32 toward the back plate 20 side, and the upper end thereof is in contact with the back plate 20.

Furthermore, protrusions 35 are cut and raised vertically downward at the lower end edge of the inclined plate 34 at positions closer to the left and right ends.

Both ends of a rectangular saucer 36 are placed on the left and right support frames 33,33. Further, the inner end of the receiver ff[ ] 36 is positioned by abutting against the protrusions 35, 35.

On the other hand, a partition plate 37 bent into an L-shape toward the front side is horizontally suspended between the top end portions of the left and right side plates 21, 21. A quadrilateral notch 38 is located in the center of this partition plate 37.
is formed.

A projecting piece 39 is provided on the front side edge of the upper end portion of the left and right side plates 21, 21 to protrude outward at a right angle.

Further, an L-shaped stopper 41 is fixed to one side of the upper end of the side plates 21, 21, and a Yuko-shaped stopper 42 is fixed to the other side, and a micro switch 43 is fixed to the opening-shaped stopper 42. has been done. These stoppers 41.42
contacts the projections 14.14 of the base frame 1 and positions the middle frame 19.

Two through holes 44, 44 are formed in the upper end portions of the left and right side plates 21, 21, respectively, so as to face each other.

Using the opposing through holes 44, 44, the shaft 451
46 is rotatably supported. These lll114
5146 are in the same horizontal plane. A feed roller 47 and a pull-out roller 48 having the same diameter are fixed to the center of the shafts 45 and 46 so as to face each other. Both rollers 117.48
adopts a pulley structure as shown in Figures 3 and 4, and its peripheral surface has a quadrilateral cross section of 47a as shown in Figure 4 (△), or a pulley structure as shown in Figure 4 (B). A groove 48a having a 7-shaped cross section as shown in FIG.
An endless belt 49 is stretched between 7.48 and 48.

The surface of the belt 49 is located inside the circumferential surfaces of the rollers 47 and 48.

Further, chain sprockets G1 and G2 are fixed to one end of the @45.46, the right end in the figure, respectively, and a power transmission chain C is stretched between the two.

Hereinafter, both the feed row 547 and the pull-out roller 48 will be simply referred to as rollers 47 and 48. The roller 47 side is fitted into the notch 38 of the partition plate 37.

Further, a trowel-shaped support frame 50 is fixed to the outer upper part of one side plate, the left side plate 21 in FIG.
A worm gear 51 is rotatably supported vertically on this support frame 50 .

This worm gear 51 is fixed to the outside of the side plate 21.
It is connected to the output shaft of a motor 53 fixed to a frame 52 .

The worm gear 51 meshes with a worm wheel 54 fixed to one end of the shaft 45. Note that the shaft 45 is located inside the 7-shaped partition plate 37.

Near the upper ends of the left and right side plates 21, 21, and transparent i44
, 44 are formed with through holes 55, and these through holes 5
5 and 55, @56 is rotatably supported. An annular groove 56a is formed at both ends of the shaft 56.
These grooves 56a are provided with a C ring 5 on the outside of the side plate 21.
6d is fitted and is prevented from being removed.

Indicated by the code 57.57 (the one is almost "to" with the guide arm)
The connecting plate 58 is horizontally suspended between the upper edges of the base of the guide arms 57 and 57.

A through hole 57a is formed at the base end of each of the guide arms 57, 57, and a shaft 56 is rotatably fitted into these through holes 57a, 57a.

The base ends of the guide arms 57, 57 are annular rings 56b formed symmetrically near both ends of @56,
A retaining ring 59 is positioned inside the grooves 56b and 56b, and is fitted into the grooves 56b to prevent the guide arms 57 and 57 from shifting.

Furthermore, the left and right arms of the rotating frame 60 are rotatably supported inside annular grooves 56c, 56c formed symmetrically in the center of the shaft 56, 1f456c.

A retaining ring 61 is fitted into 56c to prevent the rotating frame 60 from shifting.

A roller 62 is rotatably supported at the tip of the rotating frame 60, and this roller 62 is pressed by the roller 47.

A printed circuit board 63 on which a control circuit is formed is fixed to the outer surface of the side plate 21 below the motor 53.

The middle frame 19 having the above-mentioned structure is positioned by engaging with the inverted V-shaped notch 21a at the lower end of the front side of the side plate 21.21 and the notch 9b at both ends of the projecting piece 9 of the base frame 1. -Brim 44
, 42 are pressed against the projecting pieces 14, 14 and housed in the base frame 1.

By the way, what is indicated by the reference numeral 64 is a cover, which has a cross-sectional shape along the front side edges of both side plates 2.2 of the base frame 1, and has a size that can cover the front surface of the base frame 1. .

Side walls 65 located on the outside of both side plates 2.2 of the base frame 1 are formed on the left and right edges of the cover 64, and an arm 66 is continuous to the upper end side of the cover 64 and continues to these side walls 65. are doing. The tip of the multi-arm 66 is connected to the side plate 2 via the bottle 66a.
．． It is rotatably supported in the center of the upper end of 2.

At the center of the back surface of the cover 64, there are projecting pieces 67 facing left and right.
, 67 are cut and raised, and a rotating frame 69 is rotatably supported on these projecting pieces 67 and 67 via a shaft 68. A roller 10 is rotatably supported at the tip of the rotating frame 69. The roller 10 is in a position where it is pressed by the roller 48 on the front side.

As shown in FIG. 10, a torsion coil spring 71 is wound around @68, and the
In the figure, the rotation habit is given in the counterclockwise direction.

On the other hand, protrusions 72 are cut and raised inward at right angles at positions close to the left and right ends of the lower end of the inner surface of the cover 64, and these protrusions 72 are used to rotate the upper end of the lock lever 73. It is rotatably supported on an axis.

The lock lever 73 is formed into a substantially "7" shape, and its upper end faces an opening 64a formed by cutting and raising the projecting piece 72. Further, a bent piece 74 is protruded at a right angle in the middle of the lock lever 73, and a notch 74a formed in this bent piece 74 is connected to a protrusion formed in the side plate 2.2 of the base frame 1. It is engaged with the underside of piece 6.

In addition, a torsion coil spring 76 is wound around the support shaft 75 of the lock lever 73 as shown in FIG. There is.

Next, the method of use and operation of this embodiment configured as described above will be explained with reference to the flowcharts shown in FIGS. 11 and 12.

First, in step $1, the paper towel P is set. At this time, the cover 64 is rotated upward about the pin 61 as shown in FIG. With the end of the roll of the paper towel P facing toward you, both ends of the paper towel P are placed on the protrusions 32, 32 at the bottom of the middle frame 19. After the end of the paper towel P is introduced between the roller 7o and the roller 62, the cover 64 is closed (step S2).

Then, the large surface of the cover 64 presses the actuator of the microswitch 43, so the power is turned on and the control circuit is reset (steps 83 to S5).

At this time, as shown in FIG. 7, the cover 64 is closed and the roller 10 comes into contact with the roller 48, so the paper towel P is sandwiched between the roller 48 and the roller 70. Further, another roller 62 is also in contact with the roller 47 via the paper towel P.

Further, the bent piece 74 of the lock lever 73 comes into contact with the protruding piece 6, and is rotated in the counterclockwise direction in FIG. 7 against the force of the torsion coil spring 76, so that the notch 74a and the protruding piece 6 are engaged. Then, the cover 64 is locked. To release the lock, insert your fingertip etc. into the opening G4a formed in the cover 64 and press the lock lever 7.
3 and rotate the lock lever 73 counterclockwise in FIG. 7 to disengage the projection 6 and the notch 74a.

Under the above-mentioned conditions, the paper towel P is automatically set to the standby state in step S6, and when one sheet is used, it is automatically set to the standby state after a certain period of time. This will be explained with reference to FIG.

When the paper towel P is set, the tip of the paper towel P is located on the back side of the upper end of the back plate 20, as shown in FIG.

In this state, as shown in FIG. 7, the tip of the paper towel P has not reached the rotating frame 27, so the rotating frame 27 is in the free position 1 and is approaching the permanent stone 28 beam-dos switch 31. , the reed switch 31 is OFF.

When control is started in this state, first, step S13
, the presence or absence of paper towel P is determined by the rotating frame 27.
That is, whether or not the paper towel touches the rotating frame 27 is constantly monitored. In the state shown in FIG. 7, the reed switch 31 is at 0[F, so it is detected that there is no paper. In this case, the process advances to step S17, where timer A in the control circuit is set and the timer A is kept on standby for a certain period of time until the timer counts up.

When the count-up ends, the process advances to step 818.
The timer B is set, and at the same time the motor 53 is rotated, the shaft 45 is rotated via the worm gear 51 and the worm wheel 54, the shaft 46 is rotated via the chain C, the paper towel P is sent out, and the timer 8 is set in advance. Start counting the values. Moreover, the belt 49 is also run.

When the paper towel P is sent out, the leading end of the paper towel P comes into contact with the rotating frame 21 soon. This state is constantly monitored in step S19, and if the rotating frame 27 detects a paper towel before the timer 8 counts up, the timer 8 is reset in step S320.

Next, the process proceeds to step 821, where the timer C is set, the motor continues to be driven, and the paper towel P
to be sent. Then, in step 822, the timer C counts up, the motor 53 stops, the feeding of the paper towel P is stopped, and the paper towel P is fed out by a certain length J (step 5
23). This state is the use standby state shown in FIG.

By the way, if the paper towel P is not detected until the timer 8 counts up in step S19, the motor 53 is stopped at the same time as the timer B counts up in step S24, and the feeding of the paper towel is also stopped. Proceed to S1.

Further, if it is detected in step S13 that the paper towel P is held by the rotation frame 27, the paper towel P is fed out by a predetermined amount, and therefore, in step S14, the holding state is reached. In this state, when the user tears off the paper towel P from the perforation (step 515), the process proceeds to step 816, where it is detected by the rotating frame 27 that there is no paper towel P, and the process moves to the control from step 817 described above.

All the operations in step S6 are repeated as described above, and when the paper towel P is used up, in step s7 of FIG. 11, this is detected by smell,
In step S8, the cover 64 is opened to replace the paper towel P. Then, the microswitch 43 is turned off in step S9, the power is turned off in step S10, the paper towel P is replaced in step 811, and the process returns to step S1.

On the other hand, the circuit is reset in step S5,
If the cover 64 is opened by mistake in step S12, the process proceeds to step S9, and the microswitch 43 is turned off.
When it becomes FF and the cover 〇4 is closed again, step S2
Return to step 83 and repeat the operations.

FIG. 13 and FIG. 14 illustrate another embodiment of the present invention. In each figure, the same parts as in the embodiment described above are denoted by the same reference numerals, and the explanation thereof will be omitted.

In this embodiment, the feed roller 75 has a large diameter, and the pull-out roller 76 has a small diameter, and a belt 49 is stretched between the grooves of both rollers. However, the diameters of the circles formed by the bottom surfaces of the grooves of both rollers 75 and 76 are the same as shown in FIG.

When such a structure is adopted, when both ends -575° 76 are rotated, the larger diameter feed roller 75 has a faster circumferential speed, so the paper towel is fed at a faster speed.

As a result, a cutting force acts on the paper towel at the center of the perforation, and the longitudinal center of the perforation is cut over a predetermined distance.

If the paper towel is fed in this state, even if the lower end of the paper towel is pulled near the corner during cutting, the pulling force will be concentrated on the frontage and the paper towel will be accurately cut from the perforation.

[Effect] As is clear from the above explanation, according to the present invention, the width of the feed roller and the pull-out roller is made smaller than the width of the paper towel, so when feeding the paper towel, the width of the paper towel is reduced. Since the frictional force is concentrated in the center and is generated uniformly along the paper width direction, the paper towel can be fed linearly, the paper towel does not meander or skew, and the paper towel does not break.

Also, since an endless belt is stretched between the feed roller and the pull-out roller, the tip of the paper towel hits this belt and is guided, so the tip of the paper towel does not fall or get caught between the rollers or between the shafts. There will be nothing left to do.

Furthermore, if the diameter of the feed roller is increased, the speed at which the paper towel is fed by the feed roller becomes faster, so it is possible to cut the longitudinal center of the perforation over a predetermined distance. When the user pinches and pulls the bottom edge of the paper towel at any position, the force is concentrated at the pre-cut perforation, ensuring that the paper towel is cut along the perforation. can.

[Brief explanation of the drawing]

The figures are for explaining one embodiment of the present invention, and Fig. 1 is an exploded perspective view of the inner frame, Fig. 2 is an exploded perspective view of the whole, Fig. 3 is a perspective view of the main parts, and Fig. 4 (A ). (B) is a partially enlarged vertical sectional side view showing different shapes of the rollers in FIG. 3, FIG. 5 is an external perspective view, FIG. 6 is a perspective view with the cover open, and FIGS. 7 to 9 The figure is a vertical side view explaining the operation, FIG. 10 is a vertical side view with the cover open, FIGS. Are the figures illustrative of other embodiments of the invention? It is a sectional view of J1 figure and an attached state. DESCRIPTION OF SYMBOLS 1... Base frame, 2, 21... Side plate, 13... Mounting plate, 19... Middle frame, 45.46.56... Shaft, 47.
48...roller, 49...to bell 1, 58.69.
...Rotating frame, 62.70...Roller, 73...Lock lever-1P...Paper towel.

Claims (3)

[Claims] (1) In a paper towel dispensing machine that stores rolled paper towels and unwinds them to the use position,
This paper towel dispensing machine is characterized in that a feed roller is arranged at the front in the paper towel running direction in the middle of the paper towel running path, a pull-out roller is arranged at the rear, and an endless belt is stretched between the two. (2) A paper towel dispensing machine characterized in that grooves are formed all around the circumferential surfaces of the feed roller and the pull-out roller, and the belt is fitted into the grooves. (3) The paper towel dispensing machine according to claim 1 or 2, wherein the length of the feed roller and the pull-out roller is shorter than the width of the paper towel.