FI80377C - Method and apparatus for distributing a flexible strip material from rollers - Google Patents

Description

1 80377

Method and apparatus for dispensing flexible web material from rolls - Förfarande och anordning för fördelning av ett böjligt bandmaterial frän rullar

The invention relates to a method according to the preamble of claim 1 and a dispensing device according to the preamble of claim 6 for dispensing a flexible web material, such as toilet paper. In particular, the dispensing device and method of dispensing of the invention comprise treating a plurality of rolls of flexible web material wound axially on straight line core portions defining an integral roll core, whereby in each roll of web the web material remains wound on these core portions.

The intact core formed of the core portions forms an internal support for the web material wound on it. This internal support means extends outwardly over the ends of the roll, the outer extensions forming shaft pins which act as roll core supports for each roll when handling a plurality of rolls in the dispenser.

Jespersen's patent 3,437,388 discloses, by way of example, a prior art dispensing device for rolls of toilet paper having an internal support means which forms a roll core in each roll of flexible web material. According to this patent, for each roll, the core is formed of a plurality of axially straight lines, each part having a roll core support shaft projecting from the ends of the roll of material.

In this dispenser according to Jespersen's patent 3,437,388, a plurality of toilet paper rolls are provided with roll core supports projecting from opposite ends of each roll, the rollers being guided in opposite directions on opposite guide rails directed towards the inside of the dispenser. The upper roller is physically on top of the lower roller, which is held in the dispensing position by support members located at the lower ends of these opposite guide rails.

The dispenser according to Jespersen's patent 3,572,600 is also suitable for rolls wound on a one-piece tubular core.

According to these patents, dispensing comprises that the divided core, defined by the axially straight line portions or the one-piece core, must be dropped out of the dispensing device when the web material is substantially removed. Thereafter, the upper roller in the dispenser, i.e. the spare roller, which has moved downwards, with the support shaft pins of its roller core fitted on opposite guide rails, while on the lower roller, follows the lower roller to the dispensing station.

In the web distribution system generally described above, toilet paper in the form of web material almost always remains on the one-piece roll core when the core finally falls out of the distribution station. This not only causes unnecessary waste of toilet paper, but can also contribute to clogging of the dispenser in the event that the core is not completely removed from the dispenser when the toilet paper is almost completely removed from the heart. This is especially true in a dispenser for rolls using structurally rigid inner support cores, such as those disclosed in Jespersen's Patent 3,572,600.

Although in the dispensers disclosed in Jespersen Patent 3,427,388 all toilet paper has been removed from the lower roll in the dispensing station, it is not absolutely certain that parts of the fully emptied transversely divided heart will automatically fall out. When the spare roller rests on the top of the empty core parts, there is usually too much friction between the top of the empty core parts and the lower surface of the upper roller. This can prevent the heart parts from falling out automatically. As a result / it may be necessary to manually pull these empty core parts out of the lower end of the dispenser.

Although there is no spare roller in the dispenser, the empty core parts in the dispensing station will not always fall out of the dispenser. This may be due to the friction of the core parts, the roller core support shaft pins formed by the end caps of which remain in frictional contact against the supports at the lower ends of the guide rails of the dispenser.

It is therefore important, when dispensing web material from split core rolls, i.e. cores made of axially straight line parts defining an intact roll core, while the web remains coiled on such parts, that there are devices to facilitate and guarantee it, that the core portions are effectively buckled or separated after the toilet paper has been completely removed from the roll wound on such core portions. This ensures that waste toilet waste is eliminated or that the dispenser is clogged, resulting in inefficient release of core parts from the dispenser guide rails.

The dispenser and dispensing method of the present invention overcomes the aforementioned problems found in prior art dispensers for toilet paper rolls having cores made of axially straight line portions. The present invention provides the distribution of web material from a plurality of rolls having transversely divided cores. The result is the assurance that the core parts will be effectively removed from the dispenser only after the two toilet paper have been unloaded from the core parts.

In its broadest form, the method of the invention for dispensing flexible web material from rolls wound on axially straight line core portions which together define an intact core while the web material is further wound on these portions provides the ability to process multiple rolls so that the web material is used or removed from the roll at the dispensing station before the spare roll falls or moves to this dispensing station. The method also ensures that the empty core parts, which are formed as an integral roller core, always fall off automatically, regardless of whether the spare roller is present or not elsewhere in the dispenser.

The method according to the invention is characterized in that axially straight line core parts are used, which define the integrity of the core material in each roll while the web material remains wound on these parts; palpating the operability of the first roller at the dispensing station by touching the heart; and exploiting the buckling effect due to the removal of the sensed core web material for the automatic removal of this heart.

According to the general description of the dispenser, a spring-loaded articulated lever is used which performs two functions. First, the lever keeps the spare roller separate from the roller in the dispensing station, at least as the core portions of the latter roller approach emptying. Thus, there is no friction between the spare roll and the roll from which the toilet paper is dispensed as this latter roll approaches the emptying of the toilet paper. Second, the lever applies a small pressure against the upper edge of the second core portion in the direction in which this roller tends to rise from its support, eliminating friction.

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5 80377 sex between the core part of the roller and its support point. This also imparts a force to the end of the core portion of the roller, which force effectively promotes the buckling effect between the core portions to cause their release from retention with the guide rails of the dispenser.

The dispensing device according to the invention is characterized in that each core has axially aligned core portions defining an intact core with the web wound around these portions and allowing the heart to buckle by removing the web, that the rack is provided with parallel divisions facing each other. and guided between the spare roll station to receive roll core supports projecting from opposite ends of the cores, that the grooves are provided with support members for holding the first roll in the dispensing station and that the lower end of the lever device recognizes the operability of the core in the dispensing station.

In view of the foregoing description of the invention, the main object of the present invention is to provide a dispenser for a plurality of rolls of flexible sheet material wound on axially straight line core portions, the pivotally mounted control lever keeping the first and second rollers apart in contact with each other. a second roll, i.e. a spare roll, to move to the dispensing station when the lever senses the emptying of the web material from the axially straight line core portions, thereby forming an intact core of the first roll.

Another object of the invention is to provide a dispensing device for a plurality of rolls of flexible sheet material, which sheet material is wound on transversely divided cores and wherein the control lever applies a buckling force to the end of the core to promote separation of parts.

6 80377

It is an object of the invention in a dispensing device according to the above purpose to provide a tension force to promote the separation of the core parts and to direct this force against the end of the heart in a direction intended to raise the heart in connection with the buckling effect of the heart parts.

Yet another object of the invention is to provide a web material dispensing device for rolls with a split core, wherein a roll retained by roll core supports projecting from opposite ends of this roll at a roll dispensing station is prevented from leaving this position until all the web material has been removed from the split. from the heart, thereby preventing the full or partially used rollers from being pinched from the dispenser.

The above and other objects of the invention will become apparent upon consideration of the following detailed description of a preferred embodiment in connection with the following drawings.

Figure 1 is a perspective view of a dispensing device according to the invention with the lid of a conventional housing removed.

Fig. 2 is a partial sectional view, taken through guide rail gutters, which guidely receive the roll core supports, showing a roll moving towards the roll distribution station at the bottom of these gutters.

Fig. 3 is a sectional view similar to Fig. 2, but showing the first roll in the roll dispensing station and the second roll held in the spare roll position.

Fig. 4 is a sectional view compared to Fig. 3, but showing the intact core of the first roll from which the web material has been removed and showing, with dotted lines, the buckling effect occurring between the core parts.

Fig. 5 is a sectional view similar to Fig. 4, showing the second roll moved from the spare position shown in Fig. 4 to the roll dispensing station.

DESCRIPTION OF A PREFERRED EMBODIMENT When explaining a dispensing device 10 for rolls of flexible web material, a conventional cover normally provided to facilitate illustration of the structural features of the invention is not shown in the drawings. Reference may be made to Jespersen Patent 3,427,388 to illustrate how a common cover that complements a dispenser housing can be mounted pivotal to a housing that forms a dispenser base for dispenser operating components. In the drawings of this application, only the dispenser rack 12 is shown, which forms the base shown to better illustrate the functional components of the dispenser 10.

Reference is also made to the aforementioned Jespersen patent 3,427,388, which is an example of a dispenser for a flexible web wound in a roll on axially straight line core portions such that in the form of a roll these core portions define an intact roll core as long as the web material remains for such parts.

This is the type of roller intended to be applied to the dispensing apparatus and dispensing method of the present invention.

With reference to the terminology used herein, reference to rolls of flexible web material wound on axially straight line core portions means that the term core portion includes a tubular or cylindrical portion, usually made of cardboard, a portion of which the flexible material in the form of toilet paper is usually wound together with its end cover, which may be molded from plastic and fitted to a tubular part, to provide a support core for the roll core projecting from the ends of the roll.

Two such core portions A and B, which form an integral roller core, are shown in Figures 3 and 4.

Likewise, the term core portion is to be understood as a core, in a web material roll, in which the roll core supports projecting from opposite ends of the roll are arranged other than by recessed end caps.

Also, as used herein, it is clear that the directly aligned core portions that form an intact core with the web material wound on it are preferably discrete and discontinuous portions so that they are free to separate or fall apart when the material is completely unloaded. in a straight row of core portions, it being understood that the straight row core portions can be retained in the form of an intact roller core by maintaining a partial or secondary connection between interconnected aligned core portions. For example, the connection between the core portions in a straight row may be a weakened connection formed, for example, by perforations or other means which will facilitate the buckling effect between the core parts desired in the present invention by removing the web material from an intact roll core having these aligned core portions. form.

However, the toilet paper web may be glued to another core portion at the beginning of the roll winding. Then, when removing the paper from the roll,

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9 80377 and when the roll is disassembled, the last piece of paper on the roll will pull the core part out of the dispenser 10.

Referring to Figure 1 of the drawings, in describing the dispenser 10, the bracket 12 has a first side wall 14, a second side wall 16, and a rear wall 18. It will be appreciated that to use the dispenser 10, the bracket 12, which provides a base for dispenser components, is conveniently mounted on the wall. Thus, the rear wall 18 of the rack 12 is provided with suitable holes (not shown) for fitting the brackets used to attach the dispenser 10 to the desired wall location.

As mentioned above, a conventional cover which, with the stand 10, complements the housing of the dispenser 10 is not shown. The side walls 14 and 16 are shown provided with straight line holes 20 which serve as pivot points for mounting the lid of the dispenser, as proposed in the dispenser of Jespersen patent 3,437,388.

The side wall 14 of the rack 12 is provided with an inwardly open trough 22. Likewise, the second and opposite side walls 16 are provided with an inwardly open trough 24. As illustrated in Figures 3 and 4, these two inwardly open troughs 22 and 24 act in a controlled manner to receive shaft pins forming core members and act as supported by the roller core as they protrude from opposite ends of the rollers when the rollers are placed in the dispenser 10.

Preferably, the troughs 22 and 24 are of different widths to accommodate shaft pins of different diameters which form roll core supports for rollers located in the dispenser. These different gutter widths, which match the different diameter diameters of the roller core support pins 10 80377, ensure the correct discharge direction and orientation when loading the rollers into the dispenser 10. However, the structure of the dispenser 10 in which the two rollers are placed maintains contact with each other the particular direction of winding and unwinding is not necessarily critical to the distribution activity.

In any case, guide rails of different widths, which receive roller core support shaft pins of different diameters, are known and disclosed in the aforementioned Jespersen patent 3,437,388.

Each guide rail chute 22 and 24 in the side walls 14 and 16 of the rack 12 is provided at its lower end with a support member indicated at 26 at the lower end of the chute 22 and 28 at the lower end of the chute 24. It can be seen that the lower part of the rack 12 is open at 30 , retained at the roll dispensing station at the bottom of the dispenser 10, extends downwardly through the open bottom 30, as shown in Figure 3, to allow the user to access the web material from the roll D from the dispenser 10.

Referring to Fig. 3, the formation of a roll D can be explained as an exemplary type of flexible web rolls intended to be dispensed by a dispenser 10 of the present invention. Thus, roll D has a flexible web wound on axially aligned core portions A and B which together define an integral roller core C with its joints at the dividing line between the core parts A and B.

In the form of the roll core shown, the roll core brackets for the core C are provided with an end cover E inserted inside the outer end of the tubular part 11 80377 to complete the core part A and the end cover F inserted inside the end of the tubular part to complete the core part B. It can be seen from Figure 3 that the core support shaft pin of the end cover E contacts the support member 26 at the bottom of the chute 22 and the end of the core support shaft pin contacts the support member 28 at the bottom of the chute 24 to support the roller D at the bottom of the chute 24 at the roller dispensing station the toilet paper protruding downwardly through the open lower portion 30 of the rack 12.

As shown in the drawings, the open lower portion 30 is defined within the side walls 14 and 16 and the rear wall 18 of the rack 12, these walls extending downwardly below the support members 26 and 28. Generally, with the dispenser cover (not shown) in place, connected to the rack 12, the cover may have the appearance shown in the aforementioned Jespersen Patent 3,437,388. Such a shape allows access to the paper stock on roll D through the open bottom 30 of the dispenser.

It will be appreciated that the roller R, which is shown in part in Figures 3 and 4, when held in the spare position in the rack 12, will have a shape similar to that shown above, with reference to the roller D.

The operation control device for the dispenser 10 between the rollers D and R placed in the rack 12 is provided with a control lever 40. This control lever is mounted from the pivot pin 42 to the trough 22 of the sidewall 14. This pivotable mounting can guide the pin 42 simply through the sides of the trough 22 to achieve the desired installation of the control lever 40.

Lever 40 has a lower sensing head 44 which senses an intact roll core when the first roll D is retained in the roll dispensing position 12 in the holder 12. According to Figure 3, the upper support end 46 of the pivotally mounted lever 40 holds the second roll in the spare roll position in the holder 12, see molten R in Figure 3.

A leaf spring 48, which may be riveted at 50 to the outer wall of the chute 22, to bias the control lever 40 to the position shown in Figure 2. Thus, the tensile force of the spring 48 forces the sensing end 44 of the lever 40 toward the roller dispensing position in the holder 12 and, as a result, forces the support end 46 of the lever away from the roller position in the holder 12.

It should be noted that the lower sensing end 44 of the guide lever 40 is shaped and tilted to apply a bending force to the end of the roller core C in a direction which tends to raise this intact core, especially under the tension applied to the lever 40 by the leaf spring 48.

Further, the end portion 52 of the lower sensing end 44 of the lever 40 is configured to be away from the longitudinal centerline of the lever 40. This design of the end portion 52 tends to apply a bending force to the core portions, i.e. to act on the core portions, to promote a buckling effect at a point laterally spaced from the vertical plane of the first roll or roll D when the roll is held at its dispensing station 10.

The design of the end portion 52 places the tip of this portion 52 in contact with the end C of the core D of the roller D to be aligned with the edge of the opposite side of the opposite chute 24, bearing in mind that the chute 24 is narrower than the chute 22 in which the lever 4 is pivotally mounted. This edge of the trough 24 on the opposite side of the holder 12 is the side of the trough 24 which is closest to the rear wall 18 of the holder 12, as these parts are shown in Figure 1.

11 13 80377 The placement of the tip in the end portion 52, which must engage the end of the core opposite the edge of the trough 24 closest to the rear wall, ensures that the core C is held in only two places, these points being immediately opposite each other. This double retention of the core C and the roll D creates an unstable state of the heart retention so that when the web is removed from the core, the double support at opposite ends of the core promotes buckling between the core portions A and B, further ensuring detachment from the gutters 22 and 24 and 28.

To provide a possible roll core three-point support and to provide the above-mentioned two-point support between the tip of the end portion 52 of the lever 40 and the edge of the chute 24 directly opposite it, the side of the chute 24 furthest from the rear wall 18 may have a slightly depressed area 54 (Figure 1). This depressed region 54 is located at the point where the end of the core adjacent the trough 24 will otherwise abut this side edge of the trough furthest from the rear wall 18 when the roller core is pushed end upward by the tension force provided by the lever 40 through the lower sensing head 44. The depressed region 54 thus ensures that the roll core is retained at only two points to create the above-mentioned unstable condition which promotes the buckling effect when the web material is removed from the straight line core parts A and B of the roll D.

The upper support end 46 of the control lever 40 is provided with an opposite bend in this embodiment, thus providing a surface 56 that is inclined inwardly with respect to the plane of the first side wall 14 of the rack 12. This inclined surface 56 is in contact with the support core of the roller core, as shown in Figures 3 and 4, with reference to the roller R held in the spare roller position in the holder 12 of the dispenser 10.

14 80377

As will be apparent from the representation of these figures, the inward inclination of the surface 56 of the upper support head 46 of the lever 40 tends to take advantage of the weight of the roller F acting downwardly through the shaft resting on the inclined surface 56 in a manner tending to force the lever 40 and its upper support end 46 outwards. thus, this weight of the roller R causes the lower sensing head 44 of the lever 40 to press inwardly against the end of the core C formed by the portions A and B in an attempt to deflect the core portions by removing web material from the intact roll core of the roller D, thereby releasing the core portions support members 26 and 28.

The second side wall 16 of the bracket 12 is provided with a spring-loaded latch 60 which may be riveted at 62 to the outer wall of the trough 24 to accommodate this latch 24. The lower end 64 of the spring-tensioned latch 60 is spaced above the support member 28 at the lower end of the trough. Thus, it is sufficiently spaced above the support member to allow the shaft pin of the end cover F of the core portion B to rest freely on the support member 28 below the end of the latch 60, as shown in Figures 3 and 4.

It is clear that the shaft pin of the end cover F moves down along the guide rail gutter 24 until it moves under the latch head 64. In this position, reverse movement along the guide chute 24 is prevented by the latch 60. This blocking effect prevents the right end of the roller D (as shown in Figure 3) from rising in the holder 12 of the dispenser 10, thus preventing full or incomplete toilet paper rolls from pinching from the dispenser 10.

It is understood that the left end of the roller D is prevented from rising back up in the trough 22 by the lower sensor end 44 of the lever 40 on the shaft pin of the end cover E, which end cover is 80377 forms part of the core part A, as again shown in Figures 3 and 4.

The second side wall 16 of the rack 12 is also provided with a brake spring 70. The upper end of this spring may be suitably riveted to the side wall 16. The spring 70 is positioned adjacent the roller dispensing station to the rack 12 to extend inwardly and apply frictional resistance to the other end of the first roller. . The function of the brake spring 70 is to stop the rotation of the roller D, i.e. the roller placed in the dispensing station, so that it does not rotate freely when the user pulls the web material, such as toilet paper, from the dispenser 10.

The operation of the dispenser 10 described above can now be explained. In Figure 1, the dispenser rack 12 is shown in an empty or unloaded state. The sectional view of Figure 2 shows the first roller D when positioned with its core support shaft pins (not shown), in guided contact with the rail gutters 22 and 24 as the roller travels down to the dispensing station at the lower end of the rack 12.

In Fig. 3, the roller D is shown with the support axle pins of the core parts A and B being the grooves 22 and 24 on the support members 26 and 28. In this position, the material of the roller D is exposed to the intended user via the open lower part 30 of the stand 12. In addition, in Fig. 3, the second or spare roller R is placed on the bracket 12 by placing its shaft pins in the troughs 22, respectively. 24 top ends.

However, the position of the roller D as it has traveled down to the dispensing station has moved the lever 40 so that its upper support end 46 has moved into the chute 22 to form a stop in the chute 22. As shown in Figure 3, the left shaft pin of the roller R has come into contact with this stop 16 80377 with the shaft pin resting on the inclined surface 56 of the upper support head 46 of the lever 40.

It is understood that the brake spring 70, as best seen in Figure 1, is activated by a downward movement of the roller D such that the spring 70 provides frictional resistance to slow the free rotation of the roller D. Similarly, the downward movement of the shaft pins of the roller D in contact with the support members 26 and 28 has caused the shaft pin of the end cover F to pass under the end 64 of the spring-tensioned latch 60. Thus, with the lower sensing end 44 of the lever 40 on the left pivot pin of the roller D and the end 64 of the spring-loaded latch 60 on the right pivot pin of the roller D, any attempt to raise the roller D is effectively prevented by these two members located at opposite ends of the pivot pins. on.

The state of the rollers D and R described above, as shown in Figure 3, where they are both withheld for distributions in the spare position, respectively, will continue, while the utilization of the web material from the roll D occurs as the user pulls the toilet paper web. Also from the web roll D during this use, the control lever 40, in particular under the tensioning force of the flat spring 48, will continuously feel the integral roll core C formed axially in a straight row of central parts A and B. Thus, the second roll R in the spare roll position is held in this position during the feeling of the intact roller core C.

As can be seen in Figure 3, the diameter of the rollers R and D with respect to the length of the lever 40, in which figure this lever extends above its pivot pin 42, is such as to keep these full rollers R and D apart. I saw with this particularly full-sized roller and pivotally mounted

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17 80377 with the lever 40, the rollers R and D are continuously kept apart from contact with each other when the web material is pulled from the roll D.

However, it will be appreciated that the continuous retention of the roll R in the spare roll position, as long as the complete roll core of the roll D is known, a situation may arise in which the full spare roll R is initially in its distribution position. This may be due to different, initially full roll diameters and / or different lengths of the pivoting lever 40. In such a situation, the continuous retention of the roller R in the spare roller position, while leaning on the roller D, the roller R will in fact feel that the roller D has an intact roller core.

This sensation will occur even if the left shaft pin of the roller R has not yet come into contact with the stop formed by the upper support end 46 of the lever 40 placed in the chute 22.

Then, as the material is withdrawn from the roller D as its diameter continuously decreases, the roller R will move downwardly on its shaft mirror in the guide rail chutes 22 and 24 until the shaft pin in the chute 22 contacts the upper support end 46 of the lever 40 and then rests thereon. Thereafter, pulling the material from the roll D, either causes a continuous decrease in the diameter of the roll D, leaves the roll R continuously held in the spare roll position, but now the feeling of the intact core of the roll D is performed by the rotatable lever 40.

Thus, the intact core C of the roller D is used to continuously hold the roller R in the spare roller position with the two rollers apart at least when the core portions of the roller D approach emptying, so that there is no friction between the spare roller R and the roller D in this last step. Importantly, knowledge of the intact core of the roll D is utilized in the roll R and spare roll position to continue the retention ie 80377 and to keep at least the two rolls apart from contact with each other during the step as the roll D approaches the depletion of its web material.

When the web material is completely withdrawn and the roll D is emptied, the state shown in Fig. 4 occurs. During this time, the spare roller, i.e. the second roller R, is still held in the spare roller position at the upper end of the rack 12. However, the lower sensing end 44 of the lever 40, when pressed against the end of the intact roll core, forces the core portions A and B to buckle as the web material leaves the intact core C. This causes the core parts A and B to be released from the retention in the roll dispensing station. In particular, it forces the core portions A and B to pass as the second core portion A is shown in broken lines on the left in Figure 4. The force thus provided by the sensing head 44 not only applies a buckling force to the heart end. against the head in the direction in which it tends to lift the core away from the support member 26, thereby relieving the friction previously present between the roll core support shaft pin and the support member 26 during normal removal of web material from the roll D.

When the intact core C is buckled between its core portions A and B, as a result of the removal of web material from the intact roll core, the core portions are released from the rail chute 22 and 24 and their support members 26 and 28, falling off through the open lower portion 30 of the rack. This releases the lever 40, especially under the force of the leaf spring 48, to move to the position shown in Figure 2.

This movement effectively moves the tactile end 44 of the lever 40 to the roller dispensing station area and likewise moves the support head 46 of the lever 40 away from the spare roller station area, thus opening the rail guide chute 1980377 22 so that the roller R shaft pins now release this roller down to the dispenser.

This state of the roller R is shown in Fig. 5. From this figure it can be seen that the lever 40 has moved at its lower tactile end to indicate an intact heart in the roll R. This shift of the lever 40 again moves the lever 40 to the upper support head 46 position to close the rail chute 22. Thereafter, when placing the new roller on the dispenser 12 by fitting the outwardly projecting core support shaft pins of the roller into opposite troughs 22 and 24, this new roller can only run down these troughs to the point where the second shaft pin impinges on the upper support head 46 of the lever 40, which closes the trough 22. the roll is kept as a spare roll until the roll placed on the support members 26 and 28 in the dispensing station is removed. When the material is removed from this latter roll, the process of buckling effect affecting the core parts, to remove them from the rail gutters and support members, will be repeated after the new roll, which is retained in the spare position, is released.

Although the foregoing is believed to contain a complete description of an embodiment of the invention, it is to be understood that various modifications, variations, modifications, etc. may be made by one skilled in the art. The invention is not limited to the described embodiment but includes all objects and equivalents within the scope of the following claims.

Claims (14)

20 80377 Patented Applications A method of dispensing flexible web material from rolls (R, D) wound on a core (C) comprising the steps of: retaining a first and a second roll of material (Df R) at a roll dispensing and a spare roll position, respectively; releasing the second roll (R) in the spare roll position to the dispensing station by removing the roll core (C) of the first roll (D) after it has been emptied, characterized by using axially straight core portions (A, B) defining intact core (C) material in each roll (D, R) with the web material remaining wound on these portions (A, B); sensing the operability of the first roller (D) at the dispensing station by touching the core (C); and exploiting the buckling effect due to the removal of the web material of the sensed heart (C) for the automatic removal of this heart. A method according to claim 1, characterized in that it comprises a step of supporting the core (C) of the second roller (R) for controlled movement from a spare roller station to a roller distribution station. A method according to claim 1 or 2, characterized in that it comprises attaching the end of the flexible web material to the second core part (A, B) at the beginning of the winding of the roll (D, R). Method according to one of Claims 1 to 3, characterized in that the feeling of the intact roller core (C) involves the application of a buckling force to the end of the core (C) in order to promote the separation of the core parts (A, B). 2i 80377 A method according to claim 4, characterized in that the application of a buckling force to the end of the core (C) comprises the direction of the force against the end of the heart in a direction in which it tends to raise the intact core (C) in connection with the buckling effect. A dispensing device (10) for rolls (R, D) of flexible raw material wound around cores (C), comprising a rack (12) for receiving first and second rolls (R, D) at a dispensing station and a spare roll station, and a lever device (40) which is pivotally mounted on a rack (12) having a lower end contacting the core (C) of the roller (D) in the dispensing station and a second end for retaining the second roller in the spare roller position and releasing this roller (R) by removing the empty core contacting the lower end, characterized by that each core (C) has axially aligned core portions (Ά, B) defining an intact core (C) with the web material wound around these portions and allowing the core (C) to buckle by removing the web material that the rack (12) are provided with opposite parallel troughs (22, 24) extending from the distribution station and the reserve between the 11a position to receive the roller core supports (E, F) protruding from opposite ends of the cores (C), the grooves (22, 24) being provided with support members (26, 28) for holding the first roller (D) in the dispensing position, and that the lower end (44) of the lever device (40) detects the operability of the core in the dispensing station. Dispensing device according to claim 6, characterized in that the lower sensing end (44) of the lever device (40) is tensioned against the end of the core by a spring member (48) to promote buckling of the core (C) when removing the web material. 22 80377 Dispensing device according to claim 6 or 7, characterized in that the guide member is provided with an inwardly directed trough (22, 24) on each side wall (14, 16) of the rack (12) and the support member is provided with support members (26, 28) for each trough ( 22, 24) in the vicinity of the lower end, which chute guidely receives the shaft pins (E, F) forming part of the roller parts (A, B) forming roller supports, the pins (E, F) contacting the support members (26, 28) to hold the first roller (B) at the roll dispensing station. Dispensing device according to one of Claims 6 to 8, characterized in that the lever device comprises a lever (40) pivotally arranged between the sensor head and the support head (46) in the first side wall (14). Dispensing device according to Claim 9, characterized in that the lever (40) is pivotally mounted on the second chute (22). Dispensing device according to one of Claims 6 to 10, characterized in that it comprises a spring-loaded spring latch (64) mounted on the second side wall (16) of the stand (12) to prevent return movement of the roller core support (F) at the other end of the first roller (D). 24). Dispensing device according to one of Claims 6 to 11, characterized in that it comprises a brake spring (70) mounted on the second side wall (16) of the stand (12) near the dispensing station, projecting inwards and applying frictional resistance to the first roller (D) retained in the spare roller position. ). II 23 80377 Dispensing device according to one of Claims 7 to 12, characterized in that the sensing end (44) of the lever (40) is designed to apply a buckling force towards the core end in a direction tending to raise the operable core (C) during buckling of the core parts (A, B). 46) is shaped to show a surface (56) inclined inwardly with respect to the first side wall (14) for contacting the roller support (E) at the other end of the second roller (R) to retain this roller (R) in the spare roller position. Dispensing device according to one of Claims 9 to 13, characterized in that the sensing end (44) of the lever (40) is provided with an end part located laterally from the longitudinal center line of the lever to apply a buckling force at a lateral distance from the vertical plane containing the first roller rotation axis. . 24 80377