JPS61217469A - Simultaneous delivery and cutting device for band of roll-shaped material - Google Patents

Abstract

To eliminate any resistance to distribution, provision has been made for a combination of several devices: an elastic means (31) acting on a movable stop (24) in order to authorise the stopping of the drum (3) after cutting, regardless of the tensile force on the excess strip, and the detachment of the said strip held by a central point created by the toothed blade (4a); a cam (16) defining the path of the cutting blade; an elastic means (32) with an adjustable position, which is intended to guide the material wound on the drum towards the exit without braking it; a device (10-35) for bringing into service a new roll by driving the drum in rotation from a cap or from the lower opening of the apparatus. <IMAGE>

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for simultaneously delivering and cutting a material pan r from a material roll.

The present invention belongs to the technical field of dispensing means for dispensing material in predetermined lengths from a roll of material wound around a core. The present invention finds particular use in dispensing devices for paper towels, cotton towels, and similar wiping materials, but is not limited to these materials and devices.

The device of the present invention is supported by a wall-mounted device so that by simply manually pulling on the material band projecting from the device, a band of length substantially equal to the diameter of the drum is automatically paid out and cut.
The mouth of the wiping material, which is rotatably mounted, applies direct pressure to the drum having an anti-sliding surface, and the toothed cutting device connected to the drum is removed. The chair is a type of device that cooperates with a cam so that when the drum is rotationally driven by the material being pulled, the circular arc ζζ projects out of the drum and penetrates the material being pulled from both sides. The drum, rebounded after cutting, returns to its initial position through the action of various complementary means, such as buffer means, locking levers, stops, arranged on the drum and on the support for the wall ML, and after cutting, a new material band is recovered. automatically protrudes downward from the device.

The object of the invention is to obtain the French Patent Application No. 83 in the name of the applicant.
．． It was the object of several previous patents and utility models, including No. 19815 and No. 84.04695, to improve the operation and simplify the mechanism of devices of the above type.

To this end, according to a first feature of the invention, a thin hand towel material lζ is provided in which a plurality of devices are arranged in combination with each other in order to completely eliminate undesirable unwinding resistance when pulling the material with wet hands. It is set up. namely, elastic means acting on the movable stop in order to ensure the stopping of the drum after cutting and the separation of said band connected at the circular central portion left by the toothed blade without regard to the tensile force acting on the protruding band;
It has the function of determining the trajectory of the cutting blade, and the position of the blade can be adjusted freely according to the type of material to be fed. Sometimes, the material wound on a drum is guided without braking into the lower opening of the device. and a device for distributing power.

The above features and other features will become clear from the description below.

The invention will be explained in detail below on the basis of a non-limiting example shown in the attached drawing.

1 and 2, as non-limiting examples of devices in which the invention may be used, are shown in French Patent Application No. 83.
It is of course possible to use the present invention in other types of devices that include one or more of the type 0 lung rolls described in No. 19815 and No. 84.04695. .

Let's briefly review the main components of the prison equipment.

The device includes a wall-mounted base plate 1 and support means 2 for a rotatable drum 3. The drum 3 incorporates a blade holder 4 which is pivotally attached to the side wall of the drum by a link 5.

The outside of the drum 3 is provided with a driven roller 18 . The driven roller 18 cooperates with a fixed cam to periodically project the toothed cutting blade 4a to the outside of the drum when the material/9nd protruding downward from the apparatus is pulled through an artificial curve and the drum is rotated. work The surface of the drum is rough and the material roll bin 1 carried by a clamping support 6 pivoted to the base plate at a joint 7 rests against the rough surface of the drum.

The device (of FIG. 1) further has a deflection plate extending iζ in front of the drum. The deflection plate has an inclined support arm 8 made of an elastic material, which is removably or fixed, so as to receive a journal 9a formed in the end member 9 engaged with the core of the roll R1 in the guide surface by means of a spacing between the guide surfaces 8a. It holds the song number. The used material roll is therefore placed in the journal of the recess 8b provided with the bottom i of the guide surface, and a new roll is placed on the roll clamping support 6. Therefore, even when the rolls are changed, the material band can be fed out without interruption. Two bands of material are fed simultaneously until the 10th rule is exhausted.

According to a first feature of the invention, one side of the drum has a support 2 integral with the side play 1a of the base plate 1.
It is rotatably mounted via a shaft 12 which is in contact with the shaft. The opposite side of the drum is fixed to another support 2.

It has a shaft 14 that is connected to a bearing 15 . The support and the bearing are fixed to each other by alignment and screwing of the layered play (15a) eccentric to the bearing.

A damping means 19 is mounted concentrically between the support 2 and the plate. The damping means is mounted for controlled oscillation by a spring 26 attached to a fixed point on the side plate 1b of the base plate (FIG. 2).

Play) 15a has a cam 16 on the side facing the side wall of the drum.
It carries The cam 16 has a concave portion 16a supported on the cylindrical outer bearing surface of the bearing and two different convex profiles 16b, 16 provided one on each side of the concave portion.
Including C. When the drum is driven to rotate, the driven roller 18
are supported on these profiles, so that these two profiles respectively limit the trajectory of the cutting blade projecting out of the drum and the trajectory of the blade retracting into the drum.

It is advantageous to provide a configuration in which the width of the blade trajectory can be varied according to the nature of the wiping material. For this purpose, the cam 16 is arranged so as to be adjustable with respect to the bearing 15. That is, the cam is fixed to the plate by an externally operable screw 29. The screw 29 passes through an elongated slot 15b in the plate oriented to move the cam away from or towards the axis of rotation of the bearing or drum (FIG. 3).

The locking lever 21 is rotatably mounted on the damping means 19 by means of an end 20. The locking lever 21 is normally supported by gravity or by a hairpin spring 30 on a stop 22 which is integral with the damping means.

Also, near the periphery of the drum, a finger 2 is attached from the side wall of the drum.
3 protrudes, and a stop 2 is placed near the rotation axis of the drum.
4 are provided. The stop 24 is pivotally mounted inside the side wall of the drum at a link 25# passing through an arcuate slot 3C in the side wall. The protrusion 24a of the stop 24 may temporarily cooperate with the stop 22 as described below. Further, a leaf spring 31 is fixed to the periphery of the play plate 15a. The leaf spring extends in the direction of the stop 22,
As the drum rotates, it supports the movable stop 24 according to the conditions described below.

According to another feature shown in FIG. 1, the material wound on the drum 3 with anti-slip surfaces is guided in the direction of the lower dispensing slot. However, it is necessary to adjust the degree of guidance according to the properties of the material. For example, in the case of thin or brittle materials, the degree of guidance must be substantially zero so that the advance of the material is not braked.

For this purpose, a guiding device already known from the above-mentioned patent application by the applicant, ie comprising elastic means 32 of the type of helical spring fixed to the base plate and extending behind the drum, is fixed to said plate by means of screws 33. has been done. The screw 33 passes through the shift bracket 32a, and the tension spring 3 is inserted between the plate and the bracket.
4 is suspended. Therefore, by bringing the head of the spring into contact with the bracket and tightening or loosening the screw, the elastic means 32 can be moved away from or approached the drum. In this way the material can pass more or less freely.

According to another feature shown in FIGS. 1 and 2, the position and dimensions of the roller 10 used in the applicant's aforesaid French patent application are modified so that the material is guided precisely towards the lower opening. It is configured to prevent the user's fingers from being drawn into the vicinity of the cutting blade. The purpose of this modification is to utilize the rollers 10 to reasonably and easily place a new roll into the apparatus and begin using the roll.

For this purpose, the roller 10 has a larger diameter,
It is rotatably mounted between the side play (1a and 1b) near the lower opening. Most of the rollers 10 protrude outward. The central part of the roller 10 carries a grooved pinion lOa of smaller diameter. Toothed belt 1)
are the pinion 10a of the roller 10 and the central groove 3b of the drum 3.
The roller 10 and the drum 3 are connected by being stretched between the roller 10 and the drum 3. The groove 3b preferably comprises complementary surfaces 3d over at least part of its circumference.

As described in the applicant's aforementioned French patent application ζζ, the cutting blade 4a consists of two separate parts. These parts are mounted on the ζζ support 4 in such a way that the distance e between them can be adjusted in order to allow the belt to pass through and to vary the resistance force in the central zone according to the nature of the material being unwound. The central zone of the blade is not provided with teeth.

Of course, the toothed belt-grooved pinion-tooth assembly of the drum may be replaced by other equivalent transmission means.

FIG. 6 shows a variant of the new roll placement device which is used when the material to be dispensed is too brittle to withstand the driving of the drum by the rollers 10 and toothed belt 1).

According to FIG. 6, the cover 36 is provided on both sides of the opening 36a with clamping members 36b whose elongated slots 36C in the legs are aligned with each other.

The protruding shaft 35a of the roller 35 can move within the slot. The diameter of the roller 35 is selected such that a portion of the roller protrudes from the opening 36a of the cover. Clamping member 3
6b is oriented such that the axis of the roller 35 when at rest is supported by gravity at the bottom of the slot 36C and a space is maintained between the periphery of the roller and the drum. When you want to guide the free band of a new material roll away from the lower opening of the device, you can simply press the roller 35 from top to bottom (arrow F1) by hand, press the drum against it, and drive the drum rotationally. good. Preferably, protrusions (irregularities, vertical grooves, lateral grooves, etc.) are provided on the surface of the roller to prevent idle rotation during driving.

The operation of the device will now be described with reference to various figures.

First, assume that the device is empty or nearly empty. The person loading the rolls into the device places a new roll R1 in the correct orientation on the clamping support 6, after the possibly nearly exhausted roll R2 has been placed on the inclined support arm 8. Next, close the cover of the device and use the palm of your hand to move the roller 35 (
(in the direction of arrow F1) or the rollers 10 projecting downwardly of the device (in the direction of arrow F2).

As a result, the drums rotate in the same direction and automatically guide the material band into the lower opening. This band will naturally hang down and be able to be pulled by hand.

At this point, the drum is blocked under the action of the various mechanisms activated during this operation, as will be described below. To obtain a new band of material the length of the circumference of the drum, the user manually pulls the protruding band. This brings the material roll into direct contact with the drum. Since the drum has an anti-slip surface, a rotational drive of the drum occurs.

The cutting blade holder 4 rotates as the drum rotates. The driven roll 18 of the holder passes through the high profile 16b of the fixed cam 16. When the rear part of the drum slot (3a) passes the material roll R1, the blade protrudes outside the drum. The rotation of the drum is maintained and the toothed cutting blade penetrates the material being pulled from both sides. The rotation of the drum is maintained as the play F penetrates the material, so the toothless cutting blade penetrates the material being pulled from both sides. Material is cut sharply outside the zone.

Further rotation of the drum continues and the blades retreat into the interior of the drum as roller 18 passes through the low profile 16C of the cam.

During this operation, the finger 23 projecting from the drum engages between the fixed stop 22 of the damping means 19 and the end of the locking lever 21 and pushes the locking lever upward. At the same time, the movable stop 24 protruding from the drum is moved to an upper position lζ within the slot 3C and is driven by the leaf spring 31 and supported by the stop 22 of the damping means. As a result, the drum stops rotating and the central zone is separated by the resistance.

When the movable stop 24 is supported by the fixed stop 22, the buffer means 19 vibrates against the spring 26, and the reaction force iζ causes the movable stop 24 to move against the leaf spring 31 and move against the stop 22.
3C and return to the lower position of slot 3C. The stop 27 fixed to the buffer means is supported by a stop fixed to the side play (1b), the finger 23 returns to its original position, and the locking lever 21 abuts the stop 22 again.

Due to the rotation of the drum residue after cutting, the material band protrudes from under the device, so that it is possible to withdraw a new material pan r from the device.

Although the advantages of the present invention are clear from the above description, the following points are noteworthy.

- The operation of the device is gentle due to the use of cam adjustments, the controlled guidance of the material towards the outlet, and the use of means for repelling the drum after cutting by stress accumulation. A sharp cut is made with no undesirable resistance. This gives the advantage that materials of any nature (cotton, hydrocel) of various thicknesses, which are generally wet-stretched, can be used.

To quickly and rationally introduce and arrange a roll in a device by simply operating a lower roller serving to lead out a material band from an outlet or operating a roller protruding from a cover. is possible.

1.The number of parts used is reduced and assembly is simplified.
The cost of the device is lower (compared to the cost of conventional devices), and it is also lighter and smaller.

The invention is not limited to the specific examples of use and various parts specifically described. On the contrary, the invention includes all variations.

[Brief explanation of drawings]

The first factor is a cross-sectional view of a non-limiting specific example of a feed-cutting device to which the characteristic structure of the present invention can be applied, FIG. 2 is a front view of the device shown in FIG. 1 with the cover removed, and FIG. Figure 2 is a cross-sectional view taken along line 3-3 in Figure 2 showing the main device 15, Figure 4 is a cross-sectional view taken along line 4-4 in Figure 3 showing the position adjustment cam, and Figure 5 is a movable drum stopper for stopping the drum after cutting. 2 is a sectional view taken along the line 5--5 of FIG. 2 showing the stop and the cutting blade in the rest position; FIG. . 1...Base plate, LA, LB...Sight plate, 2...Support means, 3...Drum, 4...
・Blade holder, 4a...Cutting blade, 6...
・Pinching support, 8...Support arm, 10...
Roller, 10a...Grooved pinion, 1)...Toothed belt, 15...Bearing, 15a...Eccentric plate, 16...Cam, 19...Buffer means, 22...
...stop, 24...movable stop, 29...screw, 31...elastic means, 32...elastic means,
32a...Shift bracket, 33...Screw, 3
5...Law's 36...Cover. B18 ℃-Lisp〉Nji representative t'bu tJll Kuchi Yoshio Cku- 1

Claims (7)

[Claims] (1) A device that uses at least one roll of material and can simultaneously feed out and cut a band of rolled material, and can be adjusted to the diameter of the drum by simply pulling the material band protruding from the device by hand. A roll of material in use, rotatably mounted on a wall-mounted support, exerts pressure directly on a drum having an anti-slip surface so that bands of substantially equal length are automatically paid out and cut; A toothed cutting device coupled to the drum cooperates with a cam to project out of the drum along an arc when the drum is driven in rotation by the material being pulled, and to penetrate the material being pulled from both sides. The drum that was working and was bounced back after cutting,
Through the action of various complementary means, such as damping means, locking levers, stops, arranged on the drum and on the wall support, it returns to its initial position so that, after cutting, a new material band automatically projects downwards into the device. an apparatus constructed of a plurality of devices arranged in combination with each other in order to completely eliminate undesirable feeding resistance for thin hand towel materials when the material is pulled with wet hands; namely, elastic means acting on the movable stop to ensure the stopping of the drum after cutting and the separation of said band connected by the central part left by the toothed blade, irrespective of the tensile force acting on the protruding band, and the cutting blade. It has the function of determining the trajectory of the material to be fed, and the cam is attached to a wall-mounted support whose position can be adjusted freely so that the characteristic values of the trajectory can be modified depending on the type of material to be fed. a device for placing a new roll by rotationally driving a drum from the cover or bottom opening of the device; A simultaneous feeding and cutting device for a rolled material band, characterized in that it is equipped with: (2) The elastic means acting on the movable stop consist of a leaf spring which is fixed at one end to a fixed part of the device, e.g. an alignment plate of a cam on a support, and which extends in the vicinity of the stop provided in the damping means, so that vibrations Said elastic means move the movable stop during drum rotation so that the reaction force of the damping means causes the stop of the damping means to gravity return to the drum release position to stop the drum after cutting before it is ready for the next withdrawal of material. 2. Device according to claim 1, characterized in that it is forcibly guided towards the stop of the damping means. (3) The movable stop rests on the stop of the damping means to block the drum, and the two-part blade has no teeth in the center, creating an adjustable non-cutting zone in the center of the material band. 3. A device according to claim 1, characterized in that both of these effects result in a complete separation of the material band without any excess unwinding of the material band. (4) the cam functions as a track for a driven roller fixed to the cutting blade and has a high profile that allows the blade to project out of the drum for cutting and a low profile that allows the blade to retreat into the drum after cutting; the cam further has a recessed portion that engages around the cylindrical outer bearing surface of the bearing on which the drum is rotatably mounted, and the cam is secured by an externally operable screw; Claim 1, characterized in that the screw is inserted into an elongated slot in an eccentric plate of the bearing oriented to move the cam away from or towards the bearing to modify the width of the track. The equipment described in section. (5) The elastic means operative to guide the material wound on the drum towards the lower opening of the apparatus may consist, for example, of a helical spring attached to a shift bracket fixed to the base plate, and elastic means against the rear part of the drum. The position of the means can be modified depending on the nature of the wiping material by means such as a screw, the head of said screw being supported in a bracket and the threaded rod of said screw engaging a screw hole in a base plate. 2. Device according to claim 1, characterized in that a tension spring is suspended between the bracket and the plate. (6) a new roll positioning device consisting of a roller rotatably mounted on a side plate of a wall-mounted support parallel to the axis of the drum below the drum and in the vicinity of the lower opening for material passage; A wide part on the circumference protrudes from said lower opening, so that when manually driving the roller with the palm of the hand, a toothed belt-type central coupling means and a grooved pinion of the roller and a central part of the drum are connected. 2. A method according to claim 1, characterized in that the drum is driven by a groove, and that a new roll of material band placed above the drum is unwound by the drive of the drum. Device. (7) a device for placing a new roll of material by driving a drum, the device comprising a roller preferably having an anti-slip surface, said roller being rotatable relative to the cover and Manual operation of a roller which is adjustable in position and is therefore spaced apart from the drum during use of the apparatus and which can be accessed through an opening in the cover to place a new roll of material brings it into direct contact with the drum. 2. A device as claimed in claim 1, characterized in that it is rotatably driven to guide the material band into the lower opening of the device.