JPH01148224A - Distributing apparatus for paper towel - Google Patents

Abstract

PURPOSE: To make force concentrate on a perforated part and to accurately cut a paper towel one by one from the perforation by setting the amt. of delivery of the paper after a lead switch is turned on and cutting off the perforation before cutting-off by a partly cutting-off mechanism of the perforation. CONSTITUTION: A paper towel 4 is suppofted by utilizing supporting frames 49 and 49. A square notch is formed on the bottom end of the central part of a front plate 30 and a hollow triangle rotational frame 53 constituting a contact-type detector is faced to this. The apex of the paper towel reaches the rotational frame 53 and this is rotated in the counterclockwise direction and a magnet 58 is separated from a lead switch 59a and when the lead switch 59a is turned off, the apex of the paper towel is detected and the amt. of paper delivery after the lead switch 59a is turned off is set and its detection is based on counting of the number of teeth of a gear 44. At this instance, the next perforation already passed through between the delivery roller 37 and the drawing-and-delivery roller 38 and is under opened condition.

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 that can accurately cut paper towels one by one from perforations. .

[Prior Art] A paper towel dispensing machine is known in which a band-shaped paper towel with perforations at predetermined intervals is wound into a roll, stored in a distribution system body, and the paper towel is fed out in fixed length increments.

With this type of paper towel dispensing machine, the user must pinch the end of the dispensed paper towel with his or her fingertips,
By pulling strongly, the paper towel is cut from the perforations, and paper towels cut into predetermined lengths are used.

[Problems to be Solved by the Invention] However, it is rare for paper towel users to accurately grasp the bottom end of an unrolled paper towel with the fingertips of both hands and carefully pull it out. , often pulled with one hand or only at one corner.

In this case, the force is not concentrated at the perforation, and the towel is cut off from other parts, making it inconvenient to use and causing problems such as the towel not being fed out accurately. there were.

[Means for Solving the Problems] In order to solve the above-mentioned problems, in the present invention, the rotation speed of the drawer feed roller for feeding out the towel and the feed O-roller of the pair of rollers is increased. At the same time, we adopted a structure in which these rollers are placed in the center of the towel in the width direction.

[Function] Under the structure described above, when the paper towel passes in contact with the outside of the pair of rollers, the rotational speed of the feed roller is increased, so a tensile force is applied in the paper towel feeding direction, and the paper towel increases in width. It can be cut to a predetermined length from the perforation in the center of the direction.

As a result, when the user pulls the bottom edge of the fed paper towel, even if the user's fingers are not at the center of the width of the paper towel, the force is distributed along the horizontal direction of the cut edge, allowing the paper towel to be sewn into the sewing machine. You can reliably cut each piece along the grain.

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

Figure 1 and the following diagrams explain one embodiment of the present invention.
The figure schematically shows the overall structure.

The paper towel dispensing machine according to the present invention (hereinafter abbreviated as the dispensing machine) has a base frame 1 fixed to a wall surface as shown in FIG.
, a middle frame 2 whose lower part is rotatably supported on the base frame 1 , and a cover 3 which is rotatably supported on the upper end of the base frame 1 while covering the front and side surfaces of the middle frame 2 . A roll-shaped paper towel 4 is housed in the middle frame 2.

Next, details of each part will be explained.

The base frame 1 is formed as a quadrilateral frame body, and has a back plate 5 and left and right side plates 6, 6. Three keyhole-shaped mounting holes 7 are formed in the upper end of the back plate 5 on a horizontal straight line, and corresponding to each mounting hole 7, the lower part of the back plate 5 has an axis line arranged vertically in the horizontal direction. Elongated holes 8.8 are formed respectively.

Further, the left and right side plates 6, 6 are formed narrowly and extend forward at right angles, and a long arm 9 and a short arm 10 are continuously formed at the upper and lower ends thereof.

Furthermore, the bent portions 5a of the upper ends of the back plate 5 are overlapped with the upper ends of the left and right side plates 6.6.

Both ends of a support shaft 11 are rotatably supported between the ends of the longer arms 9, 9. By forming notches from both sides near both ends of the support shaft 11 on the inside of the arm 9,
A thin wall portion 12 is formed. Furthermore, annular grooves 13 are formed at both ends of the support shaft 11, and grooves 14 are formed at the left and right extreme ends of the support shaft 11 to cross the shaft.

Further, a collar 15 is rotatably fitted to both ends of the support shaft 11 between the outer side of the arm 9 and the ring 13. Further, a reinforcing shaft 16 is horizontally suspended between the arms 9, 9, and keeps the arms 9, 9 parallel to each other.

On the other hand, a support shaft 17 is horizontally suspended between the arms 9, further back than the reinforcing shaft 16, with both ends thereof protruding outside the arms 9.9. A bent portion of a rotary lever 18 formed in an L-shape at a symmetrical position is rotatably supported on the support shaft 17 inside the arm 9.9.

The longer arms 18a, 18a of the rotary lever 18.18 extend forward, and a shaft 19 is horizontally suspended between their tips, and a rubber roller 20 is rotatably mounted in the center of the shaft 19. The bearing is mounted on the shaft.

Also, the short arm 18b of the pivot lever 18.18.

The lower end of the bracket 18b is located on the outer side of the bracket 21 which is cut and raised inward from the back plate 5 at a right angle.
A spring 22 is stretched between the bracket 21 and the middle of the longer arm 18a, giving the rotating lever 18 the ability to rotate counterclockwise in FIG.

Further, among the left and right side plates 6, 6, the base end of a detection piece 23 made of a thin metal plate is fixed halfway outside the left side plate 6 in FIG. 1, and its tip becomes a free end, which will be described later. It faces the microswitch S1 fixed to the outer surface of the middle frame.

A printed circuit board PC equipped with a control circuit is provided on the side plate 31 near the microswitch S1.

On the other hand, above the outside of the side plate 6.6, the upper end of a lever 24 is rotatably supported on the outer end of the support shaft 17 via a long hole 24a. Further, a support shaft 25 is horizontally suspended between the lower ends of each side plate 6, and the lower end of an elongated lever 26 is rotatably supported on the outer end of the support shaft 25 on the outside of the side plate 6. .

The lower end of the lever 24 and the upper end of the lever 26 are rotatably supported on both ends of a shaft 21 which is horizontally suspended below the arm 9. A rubber roller 28 is rotatably supported at the center of the shaft 27.

Further, a spring 29 is stretched between the tip of the lower arm 10 and the middle of the lever 26, and presses the lever 26 and therefore the roller 28 downward.

By the way, details of the middle frame 2 are shown in FIG. The middle frame 2 has a front plate 30 and left and right side plates 31 and 31 bent at right angles from both left and right ends toward the base frame 1.

A notch 32 is formed at the upper end of the left and right side plates 31, 31 on the base frame 1 side, and a circular hole 33 is continuously formed at the inner end of this notch 32.

The width of the notch 32 is slightly larger than the thickness of the thin portion 12 of the support shaft 11, and the diameter of the circular hole 33 is approximately the same as the diameter of the support shaft 11.

Also, bushes 3 are provided near the upper ends of the side plates 31, 31.
A pair of left and right shafts 35 and 36 are rotatably supported in parallel via 4.34. A rubber roller 37.38 constituting the perforation partial cut 1211t mechanism is fixed to the center of the shaft 35.36.

In the example shown, the diameters of the rubber rollers 37, 38 are equal.

One roller 37 is called a feed roller and the other roller 38 is called a drawer feed roller.

On the other hand, in FIG. 2, an inverted-shaped bracket 39 is fixed to the outer surface of the right side plate 31, and a motor 40 is fixed to the horizontal portion of this bracket 39 in a vertical state. The output shaft 40a of the motor 40 extends vertically upward, and the upper and lower horizontal parts 41a, 41 of a U-shaped support frame 41 are also fixed perpendicularly to the outer surface of the side plate 31.
It is rotatably supported on a. And the horizontal part 41a
, 41a, the output shaft 40a has a worm gear 42.
is fixed.

A worm wheel 43 is fixed to the end of one shaft 35 on the motor 40 side on the outside of the side plate 31, and this worm wheel 43 meshes with the worm gear 42. Furthermore, although a gear 44 is fixed to the motor-side end of the shaft 36 on the far side, this gear 44 does not mesh with the worm gear 42 . A small diameter pulley P1 and a large diameter pulley P2 are fixed to the other end sides of the shafts 35 and 36, respectively, and a belt B is stretched between them.

Further, a bifurcated frame 45 is provided below the gear 44 and is fixed to the side plate 31 with the gear 44 sandwiched therebetween in the thickness direction. The element and the light-receiving element are housed, and constitute a tooth number sensor.

Further, below the shaft 35.36, the left and right side plates 3
1 and 31, insert screws 46 at both ends from the outside of the side plate 31.
The shaft 47 is horizontally suspended by being fixed by the shaft 47, and a shaft 48 is horizontally suspended between the side plates 31, 31 at a position near the base frame 1 near the lower end. Further, semicircular support frames 49 and 49 are fixed to both ends between these upper and lower shafts 47 and 48 in a state of being curved downward toward the front side. These support frames 49.49
As shown in FIGS. 5 and 6, a paper towel 4 wound into a roll is supported using the support.

By the way, the lower end of an arm 51 is rotatably supported via a shaft 50 on the outer surfaces of the left and right side plates 31, 31 and in the lower part near the front side.The other end of this arm 51 will be described later. It is rotatably supported on the cover 3 side.

On the other hand, a quadrilateral notch 5 is provided at the lower end of the central portion of the front plate 30.
2 is formed, and a hollow triangular rotating frame (pendulum) 53 constituting the contact type detector faces inside this notch 52. That is, inside the front plate 30, there are left and right side plates 31.
, 31, a thin shaft 54 is horizontally suspended between them. The center portion of this shaft 54 rotatably passes through a bent portion 52a that is bent at right angles inward from the left and right side edges of the notch portion 52, and between the left and right bent portions 52a, the shaft A collar 55 is rotatably fitted into the collar 54 . The collar 55 is fixed inside the corner of the upper end of the triangular rotating frame 53.

Therefore, the rotating frame 53 is rotatably supported on the shaft 54 via the collar 55. Below this shaft 54, another thin shaft 56 is horizontally suspended between the side plates 31 and 31, and a collar 57 is fitted in the center of the shaft. It is inserted into a hollow rotating frame 53.

Further, a magnet 58 is fixed to a corner of the lower end of the rotation frame 53. Below this rotating frame 53, a shaft 60 having a projecting piece 59 at a position that does not interfere with the lower end of the rotating frame 53 is horizontally suspended between the lower ends of the side plates 31, 31 on the near side. There is. When the magnet 58 approaches within a predetermined distance inside the upper end of the protruding piece 59, it turns on.
A reed switch 59a is fixed.

Cutouts 60a are formed on the lower side of both ends of the shaft 60, and projecting pieces 62 and 62 extending forward from the lower side of the left and right ends of the support frame 61 are fitted into these cutouts 60a, respectively. are fitted and screwed together.

The support frame 61 is formed as a rectangular hollow frame body, and protrusions 63° 63 extending from the left and right upper surfaces of the rear end are attached to both ends of the shaft 25 that is horizontally suspended between the lower ends of the left and right side plates of the base frame 1. Fixed.

Further, the lower ends of the rear end sides of the left and right side plates 31 and 31 of the middle frame 2 are rotatably supported on both ends of the shaft 25 inside the left and right side plates 6 and 6 of the base frame 1.

Inside the support frame 61 is a battery box 65 containing a battery 64.
are removably fitted.

By the way, the cover 3 has a front plate 72 and side plates 73 and 73 extending from both left and right ends in the direction of the base frame 1, and has an opening-shaped cross section. A backing plate 74 is fixed to the inner surface of the front plate 12. Bent parts 75 and 76 are provided at both upper left and right ends of the backing plate 74 and at both left and right ends of the lower part, and are fixed to the back surface of the side plate 73 via these bent parts 75 and 76.

A U-shaped curved portion 77 is formed at the lower end of the backing plate 14 from the front upward.
The tip is in contact with the back surface of the front plate 72. Therefore, the lower half of the backing plate 74 is separated from the front plate 72.

Further, the upper end portion of the side plate 73 closer to the front side is connected to the shaft 1.
1, and a C ring 78 is fitted into the annular groove 13 of the shaft 11 on the outside of the side plate 73,
This prevents it from falling off.

On the other hand, the rear end portions of the upper ends of the left and right side plates 73 are rotatably supported on the upper end portions of the left and right arms 51, 51 of the middle frame 2 via screws 19.

Next, the method of use and operation of the paper towel dispensing machine constructed as described above will be explained with reference to the flowcharts shown in FIG. 9 and subsequent figures.

FIGS. 9 and 10 are flowcharts for explaining the operation. FIG. 9 shows the overall flow of the operation, and FIG. 10 shows the detailed operation of the main parts.

First, I will explain the overall flow.

In step S1 shown in FIG. 9, paper towels are set. At this time, the cover 3 must be opened and the middle frame 2 must be tilted toward the front. However, in the initial state, the shaft 1 is located in the circular hole 33 on the back side of the notch 32 formed at the upper end of the side plates 31 and 31 of the middle frame 2.
The plane portion of the thin wall portion 12 is perpendicular to a straight line extending from the entrance side of the cutout portion 32 toward the circular hole 33.

Therefore, the upper end of the middle frame 2 does not come off the shaft 11, and even if you try to open the cover 3 by pinching the lower end of the cover 3, the rear end of the upper end of the cover 3 and the upper ends of the left and right arms 51, 51 of the middle frame 2 Since the radius of rotation of the arm 510 is different from the radius of rotation of the side plate 73 centered on both ends of the shaft 11, the cover 3 cannot be opened either. That is,
Both the cover 3 and the middle frame 2 are in a locked state.

If you want to open cover 3 and middle frame 2 from this state, use shaft 1.
1 is rotated so that the plane portion of the thin portion 12 is parallel to the axial direction of the notch portion 32.

The shaft 11 may be rotated by fingers or by fitting a screwdriver or other jig into grooves 14 formed at both ends of the shaft 11.

By making the flat surface of the thin portion 12 parallel to the axial direction of the notch 32, the shaft 11 can be easily pulled out from the notch 32. In this state, the battery 64 and the like are housed on the middle frame 2 side, which makes the middle frame 2 heavy, and the rear end of the lower part of the left and right side plates 31, 31 is connected to the shaft 25 at the lower end of the base frame 1. Because it is rotatably supported on a shaft, the entire middle frame 2 has a rotational moment that rotates toward the front about the shaft 25. Therefore, if you pinch the lower end of the cover 3 and push the cover 3 upward, The cover 3 opens around the shaft 11. Then, the middle frame 2 is rotated toward you by its own weight, and the left and right arms 51.51
Since the upper rear ends of the side plates 73, 73 of the cover 3 are pulled downward through the opening mechanism, the opening movement of the cover 3 is further accelerated, and the cover 3 opens almost automatically. This state is shown in FIG. 8, where the arc-shaped support frames 49, 49 are opened upward.

In this state, the cover 3 and the middle frame 2 maintain a balance,
Both remain open. Like this, cover 3 and middle frame 2
Place the rolled paper towel 4 on the left and right support frames 49.49 with the paper towels open, pull out the tip, and pass it over the top of the rubber rollers 37.38 to the front side of the front plate 30. Place it in the desired position and use a paper towel 4
Set. This is the stage of step S1 shown in FIG.

After setting the paper towel 4 in this way, the cover (front lid) 3 is closed in step $2. When the cover 3 is closed, the cover 3 is rotated counterclockwise around the shaft 11 in FIG. 8, and the inner frame 2 is rotated clockwise around the shaft 25 via the arm 51. be done.

When the middle frame 2 is rotated in the clockwise direction in FIG. Ru. In this state, cover 3
, the middle frame 2 is now completely closed, but is not yet locked.

Therefore, when the shaft 11 is rotated 90 degrees clockwise or counterclockwise in FIG. 3 is also locked.

By the way, when the cover 3 is closed, the tip of the detection piece 23 provided on the base frame 1 side comes into contact with the □ microswitch S1 on the inner frame 2 side, turning it on (step 83). When the microswitch S1 is turned on, the power is turned on in step S4, and then the control circuit configured on the printed circuit board PC is reset.

On the other hand, when the cover 3 and the middle frame 2 are closed, the roller 2
0 is pressed onto the feed roller 37 and the roller 28 is pressed onto the pull-out feed roller 38 via the drawn out paper towel. The pressing force is provided by springs 22 and 29.

The operation immediately after the circuit is reset, that is, the first operation after the paper towel is set, starts with the control in step S7 shown in FIG. 10, and step 317 is completed to complete the towel setting. S
6 is repeated.

Details of the control content in step S6 will be explained with reference to FIG. 10.

First, the operation after setting the towel will be explained.

Normally, the tip of the set paper towel is placed between the feed roller 37 and the rotating frame 53, and
It is located outside of 0. The rotating frame 53 is rotating clockwise due to its own weight, and since the magnet 58 is close to the reed switch 59a, the reed switch 59a is
It is N.

That is, in step S7, there is no paper towel on the rotating frame 53 (SW2).

After the circuit is reset in step S5, it is detected in step S7 that there is no paper towel on the rotation frame 53 (SW2), and after a certain period of B standby (pause) in step 311, the motor 40 is rotated in step S12. starts rotating, and at the same time, the preset ■ mode is set.

The rotation of the motor 40 is transmitted to the shaft 35 via a worm gear 42 and a worm wheel 43, and the shaft 36 is rotated via a small diameter pulley P1 fixed to the other end of the shaft 35 and a large diameter pulley P2 of the belt 81. Ru.

As a result, the feed roller 37 is rotated at high speed and the drawer feed roller 38 is rotated at low speed, and the leading end of the paper towel is fed out.

On the other hand, in the preset mode (2), the paper feed mode is set after the reed switch 59a is turned on. This paper feed amount is set in advance, and the set amount is determined by the gear 44.
It is detected by counting the number of teeth by a sensor inside the frame body 45. At this time, the paper feed is carried out at maximum, and approximately one sheet of paper towel is fed.

Eventually, the tip of the paper towel will move to the rotating frame 53 (SW2).
2, the magnet 58 is moved away from the reed switch 59a, and the reed switch 59a is turned off. This is step 8
It is 13.

When the reed switch 59a turns OFF, it means that the tip of the paper towel has been detected, and step 8
14, the preset ■ is reset, and step S
In step 15, preset ■ is newly set. In this mode, the amount of paper feed after the reed switch 59a is turned off is set, and the detection of this paper feed amount is the same as the method of counting the number of teeth of the gear 44 described above.

Then, in step 316, when the preset paper feed amount (preset ■) is counted up, the motor 40 stops, and the tip of the paper towel 4 is
From 3 to 11, for example, the paper towel is protruded downward from the front surface of the switch plate 66 by a predetermined amount, and the setting of the paper towel is completed. This is step S17, and from then on, the process is in a standby state in step 818 for using the towel. The state at this time is shown in FIG.

At this time, the next perforation has already been moved to the feed roller 3.
7 and the drawer feed roller 38,
Due to the difference in rotational speed of both rollers, the longitudinal center portion of the perforation is torn over a predetermined length, leaving it open. This opening is designated by 4a.

Further, if the tip of the set paper towel 4 is set beyond the rotation frame 53 instead of between the feed roller 37 and the rotation frame 53, the towel is placed on the rotation frame 53 in step S7. In this case, the system enters a standby state in step S8.

Next, normal use after completing the towel set will be explained.

In step S9 from the standby state in step S8, when the lower end of the hanging paper towel 4 is pulled by hand,
Since the force is concentrated on the opening 4a of the paper towel 4, the paper towel 4 is reliably moved along the perforations.
It can also be cut with a small amount of force. When the paper towel is cut, the rotating frame 53 no longer contacts the paper towel in step S10, so it returns to its original state due to its own weight, and detects that the paper towel is no longer present. After waiting for a certain period of time in step 811, the motor 40 rotates in step 812 to send out the next paper towel and at the same time set the preset mode (2). Thereafter, in the same way as described above, the process is performed up to step 817, and the process enters a standby state for the next use, step S8, and the operations from step S8 to step 317 are repeated each time a paper towel is used one by one until the paper towel 4 is used up.

The paper towel is used in this way, but if the tip of the paper towel does not appear until the value of preset 2 counts up in step 813,
It is determined that there is no paper towel 4, and in step 318, the value of preset {circle around (2)} is counted up, the motor 40 is stopped, and the process moves to step S19 in FIG.

The paper feed and hanging according to the value of this preset
This relationship is larger than the paper feed amount.

On the other hand, in FIG. 9, if the cover 3 is opened during use in step S24, steps 820, 321, 322
Then, the microswitch S1 is turned OFF, so the power is cut off, the motor 40 does not rotate, and the vapor towel is not fed out. If the cover is closed again, the process moves to step S2 and the above-mentioned operations are performed.

Next, in step S19, if the paper towel 4 is exhausted, the cover 3 is opened in step 320. Then, in steps S21 and S22, the microswitch S1 is turned OFF and the power is turned off, so the towel is replaced in step S23, the process returns to step S1, and the same operation is repeated.

[Effect] As is clear from the above explanation, according to the present invention, the perforation is separated before cutting by the partial separation mechanism of the perforation opening, so the force is concentrated on this part and the paper towel is separated. It is possible to accurately cut one sheet at a time from the perforation.

[Brief explanation of the drawing]

The figures are for explaining one embodiment of the present invention, in which Fig. 1 is an exploded perspective view of the whole, Fig. 2 is an exploded perspective view of the middle frame, Fig. 3 is a partially cutaway perspective view, and Fig. 4 is an overall A perspective view, Fig. 5 is a sectional view taken along the line A-A in Fig. 3, Fig. 6 is a sectional view taken along the line B-B in Fig. 4, Fig. 7 is a perspective view of the main parts, and Fig. 8 is a sectional view taken with the cover open. 9 and 10 are flowcharts for explaining the operation. 1... Base frame, 2... Middle frame, 3... Cover, 4...
・Vapor towel, 6, 31.73...Side plate, 9.1
0... Arm, 11° 17.19, 25, 27, 35.3
6... Shaft, 12... Thin wall portion, 20.28... Roller, 32... Notch, 33... Circular hole, 37...
Feed roller, 38... Drawer feed roller, 40.
... Motor, 42 ... Worm gear, 43 ... Worm wheel, 44 ... Gear, 45 ... Frame, 51
...Arm, 53...Rotating frame, 58...Magnet,
598... Reed switch, 66... Switch board,
Pl, P2...Pulley, 31.52...Micro switch. 1... Base Frame 2... Middle frame 3... Cover 4... Paper towel 6.31.73... Side Plate 9.10 ... Arm 12 ... Thin wall portion 20.28 ... Roller 32 ... Notch portion 33 ... Circular hole 37 ...・Feed roller 38...Drawer feed roller 40...Motor 42...Worm gear 43...Worm wheel 44...Gear 45... ... Frame 51 ... Arm 53 ... Rotating frame 58 ... Magnet 59a ... Reed switch 66 ... Switch plate Pl , P2... Pulley S 1. S2...Micro switch Figure 6

Claims (1)

[Claims] It comprises a base frame that is fixedly arranged, a middle frame and a cover that are rotatably supported on the base frame and opened and closed in conjunction with each other, and the middle frame has a paper towel wound in a roll shape. A pair of rollers forming a part of the perforation separation mechanism are arranged in parallel in the front and back in the paper feeding direction at the upper end of the middle frame.
A paper towel dispensing machine characterized in that a contact type paper detection means is provided in the middle of the front side of the inner frame.