JPH01244725A - Paper towel distributing machine - Google Patents

Abstract

PURPOSE:To correctly set a paper towel by providing a pressing means to abut on a drawing roller at an openable and closable cover side and providing the pressing means to abut on a feeding roller at a distributing machine main body side. CONSTITUTION:A roller 62 is rotably shaft-supported at the main body side, and the roller 62 is pressed to a roller 47. Projecting pieces 67 and 67 are cut up in the central part of the back surface of a cover 64 in being faced right and left, and a turning frame 69 is turnably shaft-supported through a shaft 68 to the projecting pieces 67 and 67. To the head part, a roller 70 is rotably shaft-supported, and the roller 70 is located in a position to be pressed to a roller 48 at a foreground side. In such a way, by providing the pressing means to abut on the drawing roller 48 at the openable and closable cover side and providing the pressing means to abut on the feeding roller 47 at the main body side of the distributing machine, the pressing means can be separated from the drawing roller only by opening the cover, and a paper towel can be easily and, moreover, correctly set.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a paper towel dispensing machine, and more specifically, to a paper towel dispensing machine that is equipped with a roll-shaped paper towel pull-out roller and a feed roller at the front and back of the paper towel feeding direction. It is related to the dispensing machine.

[Prior Art] Paper towel dispensing machines are known that pull out a rolled paper towel and guide it along a predetermined feeding path to a position where it can be used.

Some paper towel dispensing machines of this type are equipped with a pull-out roller at the rear in the paper towel feeding direction and a feed roller at the front, and the paper towel is placed between each individual roller that is pressed by each of these rollers. A structure in which the material is sandwiched and fed is known.

[Problems to be Solved by the Invention] In conventional paper towel dispensing machines of this type, pressing means such as rollers that contact the pull-out roller and the feed roller are provided on the main body of the dispensing machine. Therefore, when initially setting paper towels, in order to guide the tip of the paper towel between each roller and the pressing means, it is necessary to move each pressing means away from the rollers, which is not only cumbersome but also difficult to use accurately. There was a problem that it could not be set properly, resulting in meandering or damage.

[Means for Solving the Problems] In the present invention, in order to solve the above-mentioned problems, the pressing means in contact with the pull-out roller is provided on the side of the cover that can be opened and closed, and the pressing means in contact with the feed roller is provided on the main body of the dispensing machine. A structure installed on the side was adopted.

[Function] By adopting the above-mentioned structure, it is possible to pull the paper towel far away from the pull-out roller simply by opening the cover, and when setting the paper towel, by manually releasing only the pressing means in contact with the feed roller, the tip of the paper towel can be extremely easily set in the specified position. By simply guiding the paper towel along the feed path and closing the cover, the paper towel can be sandwiched between the pull-out roller and the pressing means, and the paper towel can be set accurately.

[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, and a bottom plate 3 connecting the front half between the lower ends of these side plates. and a back plate 4 that communicates between the rear edge and the rear edge.
It has a top plate 5 that connects the upper ends of the side plates 2.2.

Projecting pieces 6 are cut and raised inward at right angles near the lower portions of the side plates 2, 2 on the near side.

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 a right angle upward on the rear edge of the horizontal part 7, and the oblique side 8 is also formed with a bent 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 disposed toward the front and downward, and has a rearwardly curved portion 12a formed at its lower end. 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.

Furthermore, projecting pieces 14 and 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. Nails, screws, or the like fixed to a wall (not shown) are 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.

Note that the through hole 1 formed near the lower edge of the mounting plate 13
4a is for securely fixing the mounting plate 13 to the wall surface with nails 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 and is formed as a mouth-shaped frame with an open front side.

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 provided at right angles toward the front on the left and right sides 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 opening 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 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 saucer 36 has a protruding piece 35,
35 and is positioned.

On the other hand, a partition plate 31 bent in a V-shape toward the front side is horizontally suspended between the upper ends 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 portion of the side plates 21, 21, and an opening-shaped stopper 42 is fixed to the other side, and a microswitch 43 is fixed to the opening-shaped stopper 42. has been done. These stoppers 41 and 42 are in contact with the projecting pieces 14, 14 of the base frame 1, and position the middle frame 19.

Two opposing through holes 44 and 44 are formed in the upper end portions of the left and right side plates 21, 21, respectively.

Using the opposing through holes 44 and 44, the respective shafts 451
46 is rotatably supported. These axes 45.46
are in the same horizontal plane. A feed roller 41 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 days - LA 47.48 is shown in Figure 3.
As shown in Figure 4, a pulley structure is adopted, and its peripheral surface has a groove 478 with a quadrilateral cross section as shown in Figure 4 (A), or a groove 478 with a cross section as shown in Figure 4 (B). V-shaped grooves 48a are formed over the entire circumference, and these grooves 4
An endless belt 49 is stretched between both rollers 47 and 48 using rollers 7a or 48a.

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

Furthermore, chain sprockets G1 and G2 are fixed to one end side of the shafts 45 and 46, respectively, to the right end side in the figure, and a power transmission chain C is stretched between them.

Hereinafter, both the feed roller 47 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 support frame 50 in the shape of a mouth 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 V-shaped partition plate 31.

Near the upper ends of the left and right side plates 21, 21, and through holes 44
, 44 are formed with through holes 55, and these through holes 5
5 and 55, a shaft 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.

The one indicated by the code 57.57 is a guide arm and is approximately "to".
The connecting plate 58 is horizontally suspended between the upper edges of the bases of the guide arms 57, 57.

Through holes 57a are formed at the base ends of the guide arms 57, 57, and a shaft 56 is rotatably fitted into these through holes 57a, 57a.

The base end of the guide arm 57.57 has an annular groove 56b formed symmetrically near both ends of the shaft 56;
A retaining ring 59 is fitted inside the guide arms 56b and 56b to prevent the guide arms 57 and 57 from shifting.

Further, 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, and a retaining ring is provided in the groove 56C156c. 61 is fitted 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 inner frame 19 having the above-mentioned structure is positioned by engaging the inverted V-shaped notch 21a at the lower end of the front side of the side plates 21, 21 with the notch 9b at both ends of the projecting piece 9 of the base frame 1, and positioning the stopper. 41
, 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.
, 2 is rotatably supported in the center of the upper end.

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 70 is rotatably supported at the tip of the rotating frame 69. The roller 70 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 11 is wound around the shaft 68, and a tenth
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 approximately in the shape of a square, 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 13, and a notch 74a formed in this bent piece 74 is connected to the protrusion formed in the side plates 2, 2 of the base frame 1. It is engaged with the underside of piece 6.

Further, as shown in FIG. 7, a torsion coil spring 76 is wound around the support shaft 75 of the lock lever 73, giving the lock lever 73 the ability to rotate clockwise in FIG. .

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 S1, the paper towel P is set. At this time, the cover 64 is rotated upwardly around the bin 67 as shown in FIG. With the winding end 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. Then, the end of the paper towel P is introduced between the belt 49 and the roller 62, and the cover 64 is closed (step 82).

Then, the back 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 85).

At this time, as shown in FIG. 7, since the cover 64 is closed and the roller 70 comes into contact with the roller 48, 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 contacts the protruding piece 6 and is rotated counterclockwise in FIG. 7 against the force of the torsion coil spring 76, so that the notch 74a and the protruding piece 6 are engaged. , the cover 64 is locked. To release the lock, insert your fingertip etc. into the opening 64a 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 after a certain period of time when one sheet is used, it is automatically set to the standby state. 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 a free state, and the permanent magnet 28 is approaching the lead switch 31. The switch 31 is OFF.

When control is started in this state, first, step 813
, the presence or absence of paper towel P is determined by the rotating frame 21.
That is, whether or not the paper towel touches the rotation frame 27 is constantly monitored. Since the reed switch 31 is OFF in the state shown in FIG. 7, it is detected that there is no vapor. In this case, the process proceeds to step S17, where timer A in the control circuit is set and kept on for a certain period of time until the timer counts up.

When the count-up ends, the process advances to step 818.
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 belt 49, the paper towel P is sent out, and the timer B is set in advance. Start counting the values.

When the paper towel P is sent out, the leading end of the paper towel P comes into contact with the rotating frame 27 soon. This state is constantly monitored in step S19, and if the rotating frame 27 detects a paper towel before timer B counts up, timer B is reset in step S820.

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 〇 counts up, the motor 53 stops, and the feeding of the paper towel P is stopped, and the paper towel P is fed out by a certain length J (step 523).
).

This state is the use standby state shown in FIG.

By the way, if the paper towel P is not detected until the timer B counts up in step 819, the motor 53 is stopped at the same time as the timer 8 counts up in step 824, the paper towel feeding is also stopped, and the process proceeds to step S7, which will be described later. move on.

Further, if it is detected in step S13 that the paper towel P is present in the rotating frame 27, the paper towel P has been fed out by a predetermined length, and therefore, in step S314, the paper towel P enters a standby state. When the user tears off the paper towel P from the perforation in this state (step 515), the process proceeds to step 816, where the rotary frame 27 detects that there is no paper towel P, and the process proceeds to the control from step 817 described above.

When all the operations in step S6 are repeated as described above and the paper towel P is used up, this is detected in step S1 of FIG. open. Then, the microswitch 43 is turned off in step S9, the power is turned off in step 810, the paper towel P is replaced in step 811, and the process returns to step S1.

On the other hand, after the circuit is reset in step S5,
If the cover 64 is opened by mistake in step 812, the process advances 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 base end of the leaf spring Fl that presses the roller 47 is fixed to a rotating frame 60 attached to the main body side (inner frame 19), and the base end of the leaf spring Fl that presses the roller 47 is fixed to a rotating frame 60 attached to the main body side (inner frame 19). 69
The base end of the leaf spring F2 is fixed to the side. This leaf spring F
2 presses the roller 48.

In this way, even if leaf springs are used instead of rollers as the means for pressing the rollers 47 and 48, the pressing effect on the paper towel is sufficient and the same effect as in the embodiment described above can be obtained.

[Effects] As is clear from the above description, according to the present invention, the pressing means in contact with the pull-out roller is provided on the side of the cover that can be opened and closed, and the pressing means in contact with the feed roller is provided on the main body side of the dispensing machine. , the pressing means can be released from the pull-out roller simply by opening the cover, making it extremely easy to set paper towels.Moreover, since the paper towels are set accurately, there is no chance of meandering or damage of the paper towels. It never occurs.

[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 longitudinal side view explaining the operation, FIG. 10 is a longitudinal side view with the cover open, FIGS. 11 and 12 are flowcharts explaining the control operation, and FIGS. 13 and 14 are the invention of the present invention. FIG. 3 is a perspective view and a cross-sectional view of main parts for explaining another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Base frame, 2, 21... Side plate, 13... Mounting plate, 19... Middle frame, 45.46.56... Shaft, 47.
48...O-ra, 49...belt, 58.69...
・Rotating frame, 62.70...Roller, 73...Lock lever-1F 1. F2...Plate spring, P...Paper towel.

Claims (3)

[Claims] (1) In a paper towel dispensing machine in which a feed roller and a pull-out roller are arranged before and after the paper towel feeding path in the feeding direction, and each is provided with a pressing means that contacts the rollers, the pressing means for the feeding roller is the main body of the dispensing machine. installed on the side,
A paper towel dispensing machine characterized in that a means for pressing the pull-out roller is provided on the side of a cover that can be opened and closed. (2) The means for pressing the feed roller is a roller that is rotatably supported on a rotating frame that is rotatably supported on a shaft that is horizontally suspended between both side plates of the dispensing machine, and the means for pressing the drawing roller. The paper towel dispensing machine according to claim 1, wherein is a roller rotatably supported on a rotating frame rotatably supported on the cover side. (3) The paper towel dispensing machine according to claim 1, wherein the means for pressing the feed roller and the pull-out roller are leaf springs attached to the dispensing machine main body and the cover.