EP0445052A1 - Automatic plastic bag dispensing apparatus, in particular of bags of polyethylene - Google Patents

Abstract

This apparatus is noteworthy in that it comprises a structural frame (1) of parallelepipedal form, permitting the introduction, engagement and positioning of a device (3) for loading stacked plastic bags (4) and the various control means; and in that the structural frame has, in its upper part, an articulated cover (13) which is arranged in order to receive a device for applying pressure to the bags, means permitting individual control of the bags, means permitting the remote control of the operation of the loader, and means permitting the adjustment of the positioning of the loader device, ensuring, in particular, its locking in position with a view to immobilising the distribution of the bags. <IMAGE>

Description

Machine for the automatic distribution of plastic bags, especially polyethylene.

The invention relates to the technical sector of machines and equipment for the automatic distribution of plastic bags which can find uses for example at the various cash desks of stores.

The plastic bags constitute a preferred packaging in stores by its well-known characteristics of low cost, ease of storage, ease of printing with the brand of the seller or the distributor. These bags which are for example made in bundles are particularly practical for stores where the consumer freely chooses his products, stores them pell-mell in shopping carts, then goes to the checkout; the cashiers then give the customer one or more bags depending on the size of the purchases to store them in said bags. There are thus several techniques for distributing bags, either the cashier gives a lot of bags, and there is often waste by giving too many bags, or there are bag dispensing machines. In the latter case, the materials must be reliable, with a large capacity for storing bags to avoid too frequent supply. The existing materials are however not satisfactory because they do not allow the bags to be checked and distributed one by one. It happens very often that by the effect of adhesion of the bags between them, one takes several at a time. In addition, and except manual distribution of the cashier, it has no possibility of controlling the distribution of the number of bags.

In addition, the existing equipment is bulky and is arranged next to cash desks, constituting an annoyance despite everything both for the cashiers and for the customer base.

In an attempt to remedy these drawbacks, it has been proposed by certain large surface stores to arrange the checkout desk with boxes or product receiving compartments and near the cashier receptacles allowing the positioning of pins on which are arranged the bundled bags. It is then the cashier herself who fills the bags of goods by dividing them by categories, food, drugstore or others.

In practice, this technique, although attractive at first glance, has drawbacks linked to an increased unavailability of the cashier and a loss of time, and to a transfer of the operations for storing the merchandise of the buyer for the benefit of the cashier. This is not always accepted because you have to take into account the different buyers. If this technique has a priori the advantage of better controlling the delivery of plastic bags, which is an important budget item for stores, in practice it has been found that such an advantage did not exist and that on the contrary there was overconsumption of bags due to insufficient filling of the latter due to complaints and customer requirements. This aforementioned technique therefore causes drawbacks briefly recalled above which largely offset the savings made on the plastic bag packaging station. In addition, bags placed on pins are 35% more expensive than traditional bags.

It has also been proposed in US Pat. No. 2,909,020 to equip a cash register with one or more chargers allowing a picking up of paper bags. The loading trays receive one or more stacks of bags and are urged against elastic return means to make the bags available. Such an arrangement arranged leaving the cash register if it releases the cashier has a major defect, namely the absence of any control in the removal of the bags causing them to be wasted.

Patent DE No. 2,118,831 also discloses an installation arranged and associated with a cash register allowing the removal of paper bags at the request of a customer. The bags are placed on a loader then by complex means actuated by an order triggered by the customer, the bags are distributed one by one through an opening formed laterally on the casing of the machine. The mechanisms are complex, the loading not very easy and the transfer of the bag not very easy for its selective distribution.

Thus, taking into account all of the problems posed, constraints, disadvantages of the different techniques used, the applicants have attempted to find a solution for the design of a new machine which makes it possible to respond satisfactorily to the control of distribution of the bags, limit their waste, possibly integrating the machine into the layout of checkout benches in department stores, and in general for all types of stores.

A first object according to the invention was to design a machine with a great autonomy of operation which allows a controlled automatic distribution of plastic bags one by one, in particular in polyethylene.

Another object according to the invention was to provide a machine which allows the distribution of bags regardless of the plastic material chosen, avoiding gripping of several bags at the same time.

Another object according to the invention was to allow its integration into a cash register.

Another object according to the invention was to allow the cashier of a cash desk to act, control and limit the number of bags taken by the customer.

These and other objects will become apparent from the description which follows.

According to a first characteristic, the machine for the automatic distribution of plastic bags is remarkable in that it comprises a frame of parallelepipedal shape allowing the introduction, engagement and positioning of a device for loading stacked plastic bags and the various means of ordered ; and in that the frame has in its upper part an articulated cover arranged to receive a device for pressurizing the bags, means allowing the unit to be removed from the bags, means allowing the remote control of the operation of the loader , and means for regulating the positioning of the loading device, in particular ensuring that it is locked in position in order to block the distribution of the bags.

According to another characteristic, the frame receives on its upper face an articulated cover arranged with a frame consisting of profiled elements and allowing the positioning of a protection plane and a plate arranged with a profiled opening allowing the introduction of the fingers of the user for gripping the bags one by one, said cover being arranged to receive and ensure the articulation of a device for pressurizing the bags.

According to another characteristic, the pressurizing device is fixed to a spacer placed on the frame of the cover and comprises an articulated arm associated with a balance articulated with respect to an axis, limiters of stroke defining the limit positions of the device.

According to another characteristic, a control means is capable of being actuated by a party by acting on the pressurizing device and on the position of the bag loader to block or generate the removal of the bags.

According to another characteristic, the machine includes a device for creasing the bags.

According to another characteristic, the machine comprises one or more ramps or mats receiving brushes to allow support and contact on the stacks of bags, ramps being arranged vertically in the frame in adjustable lateral contact against said bags, and ramps arranged horizontally from above on the apparent bag.

According to another characteristic, the cover is arranged internally to receive a plate with controlled transverse movement, said plate having on all or part of its surface brushes capable of coming to bear on the opposite face of the upper bag disposed on the loader.

• La figure 1 est une vue en perspective de la machine en position ouverte, dans une première mise en oeuvre.
• La figure 2 est une vue en perspective de la machine illustrée figure 1 en position fermée.
• La figure 3 est une vue en plan de la machine intégrée dans un banc de caisse.
• La figure 4 est une vue à caractère schématique illustrant les principaux éléments de la machine dans la première mise en oeuvre.
• La figure 5 est une vue en coupe transversale de la machine illustrant en particulier le chargement des sacs plastiques dans la première mise en oeuvre.
• La figure 6 est une vue en plan selon la figure 5 illustrant le chargement des sacs plastiques.
• La figure 7 montre par une vue en coupe à caractère schématique, la mise en oeuvre de la machine dans une seconde variante de réalisation avec un chargeur à poste fixe.
• La figure 8 est une vue partielle illustrant un dispositif associé au couvercle de la machine selon l'une ou l'autre des variantes de la machine de figures 1 à 7, dispositif assurant la mise en pression sur les sacs plastiques.
• La figure 9 est une vue en coupe selon la figure 8 illustrant l'articulation du dispositif de mise en pression.
• La figure 10 est une vue en variante du dispositif selon la figure 8 de mise en pression des sacs.
• La figure 11 est une vue en plan selon la figure 10.
• La figure 12 est une vue à caractère schématique illustrant en plan les différents moyens de la prise de sacs.
• La figure 13 est une vue à caractère schématique en plan montrant l'action des brosses latérales pour faciliter le prélèvement des sacs.
• La figure 14 est une vue en coupe du dispositif de froissement des sacs en vue de leur prélèvement un à un en position repos.
• La figure 15 est une vue en coupe selon la figure 14 du dispositif en position d'utilisation.
• La figure 16 est une vue d'une plaque de prise en charge de sacs avec ouverture pour le dispositif de froissement.
• La figure 17 est une vue à caractère schématique montrant un dispositif d'obturation automatique du couvercle.
• La figure 18 est une vue en plan selon la figure 17.

To fix the subject of the invention illustrated in a nonlimiting manner in the figures of the drawings where:

• Figure 1 is a perspective view of the machine in the open position, in a first implementation.
• Figure 2 is a perspective view of the machine illustrated in Figure 1 in the closed position.
• Figure 3 is a plan view of the machine integrated into a cash register.
• Figure 4 is a schematic view illustrating the main elements of the machine in the first implementation.
• Figure 5 is a cross-sectional view of the machine illustrating in particular the loading of plastic bags in the first implementation.
• Figure 6 is a plan view according to Figure 5 illustrating the loading of plastic bags.
• Figure 7 shows a schematic sectional view, the implementation of the machine in a second embodiment with a stationary charger.
• Figure 8 is a partial view illustrating a device associated with the cover of the machine according to one or other of the variants of the machine of Figures 1 to 7, device ensuring the pressurization of the plastic bags.
• Figure 9 is a sectional view according to Figure 8 illustrating the articulation of the pressurizing device.
• Figure 10 is an alternative view of the device according to Figure 8 for pressurizing the bags.
• FIG. 11 is a plan view according to FIG. 10.
• Figure 12 is a schematic view illustrating in plan the various means of taking bags.
• Figure 13 is a schematic plan view showing the action of the side brushes to facilitate the removal of the bags.
• Figure 14 is a sectional view of the bag crumpling device for their removal one by one in the rest position.
• Figure 15 is a sectional view according to Figure 14 of the device in the use position.
• Figure 16 is a view of a bag handling plate with opening for the crumpling device.
• Figure 17 is a schematic view showing an automatic closure device of the cover.
• FIG. 18 is a plan view according to FIG. 17.

In order to make the object of the invention more concrete, it is now described in a nonlimiting manner illustrated in the figures of the drawings.

The automatic bag dispensing machine is referenced as a whole by (M). It is designed and arranged to be entirely removable, being able to constitute an independent unit or to be integrated with other assemblies such as, for example, cash desks for certain types of stores.

In a first implementation illustrated in particular in FIGS. 1 to 5, the machine constitutes an independent unit. In the implementation according to FIG. 7, the machine is integrated into the cash register. The machine can advantageously be constituted in the form of an independent module integrated or not in the cash register and which can be transferred, as required, from one cash bench to another. It should be noted, however, that the machine, whatever its construction, is arranged with a frame internally receiving a device for loading and presenting stacked plastic bags and various control means, the frame having in its upper part an articulated cover. to receive a device for pressurizing the bags, means allowing the remote control of the operation of the loading device and presentation of the bags, said cover being arranged with a profiled opening allowing the introduction of fingers of use for the controlled gripping of bags.

Referring to Figures 1 to 6 of the drawings, the machine is described in a first implementation.

This machine comprises a frame (1) of parallelepiped shape, this frame being in a fixed position or mounted on rolling means to allow its movement. This frame allows the introduction, engagement, and positioning of a carriage (2) arranged to receive the loader (3) of plastic bags (4) stacked and the various control means. This trolley is thus movable to allow loading into bags and possible maintenance of the device. In order to control the positioning of the trolley in the frame for the proper functioning of the bag distribution mechanisms, a device is provided for connecting the trolley to the rear lower base of the frame.

In one embodiment, the connection device comprises an articulated arm (5) forming a compass, one end (5.1) of which is fixed to the lower base of the frame and the other (5.2) to the rear face of the carriage or the bottom face of it. The amplitude of articulation and opening of the arm (5) is such that it allows the carriage to be released from the frame.

The trolley is arranged internally to receive the device for loading plastic bags. As it appears in the drawings, the carriage is arranged with a compartment internally receiving the means for controlling the movement in height of a tray (6) for receiving plastic bags.

As a variant according to FIG. 7, the charger device is directly integrated in the frame arranged near or in the cash desk without being movable.

According to Figures 4 and 5, the control means of the charger device thus comprise a motor unit (7) fixed on an associated support (7,1) to one of the walls of the carriage. This motor drives by means of transmission and return (8), a screw (9) disposed vertically in the carriage and slidingly receiving a ring (10) from which the above-mentioned plate (6) is disposed horizontally. Links of the aforementioned type are part of the current technique. This tray comprises from a fixed base support advantageously two panels forming drawers (6,1-6,2) adjustable in spacing relative to each other and allowing an adaptation of their length according to the length plastic bags. These panels thus partially overlap one on the other in the transverse middle part of the carriage. They are assembled and separated from each other by any appropriate connection means. Their spacing is a function of the dimensional characteristics of the bags to be received, and the spacing is adjusted and the position is maintained by conventional connecting means. The carriage is accessible laterally by two doors (11) while a handle (12) allows insertion into the frame or extraction.

In the implementation of Figure 7, the bags are stacked on a tray (6) fixed in any suitable manner to a support structure (43) with deformable parallelogram or the like, controlled by any suitable means. The worm can be coupled by dial (44) and flexible (45) to a motor block (46) with electrobrake. In this embodiment, the plastic bags are unloaded from their packaging packaging on the tray after separation of the lower flaps of said packaging. In this embodiment, the bags are put in place after the cover (13) of the frame has been raised.

The bag loading device having been described, it is now necessary to describe the means used to control the gripping of the bags and the means ensuring the lifting of the loader.

As it appears in the drawings, the frame receives on its upper face a cover (13) articulated on the rear upper base of the chassis. This cover is arranged with a frame (14) established from profiled elements, metallic for example, to allow the positioning of a protective surface (15) profiled and giving an exterior aesthetic to the machine. The cover is arranged to receive a device for pressurizing the bags which will be described later, as well as a plate (16) provided with a profiled opening (17) to allow the introduction of the fingers of a buyer. or customer who wishes to collect the bags. The cover has a profiled recess (13,1) oriented on the inside of the machine of a certain depth and against the internal face of which the aforementioned plate (16) is fixed. The depth of this recess is a function of the maximum loading height of the plastic bag receiving tray, and this to allow practical and easy gripping of the bags one by one.

The cutout or opening (17) is for example established in the form of a cross, according to FIG. 16, to allow only the introduction of the thumb and the index finger of the client for gripping a bag. This form can however be different according to the needs.

This cut can alternatively have the shape (47) illustrated in Figure 11. It is located eccentric to the median plane of the support plate. It is profiled with a central zone (47.1) widened and flared by extending (47.2) on either side and in the longitudinal plane corresponding to the location of the bags over a large part of the length of the plate. The ends are curved appreciably. Such a profile is advantageous and allows good extraction of the plastic bags one by one. and their guidance during the evacuation.

It is now necessary to describe the device for pressurizing his bags. The device is intended to control the elevation of the loader assembly as a function of the needs in stock of bags. The device is fixed to a spacer (18) arranged transversely on the frame of the cover (13). The device thus comprises an arm (19) U-shaped, the end parts (19,2) of the branches (19,1) are fixed to articulation means while the bottom part of the arm comes to bear on the upper bag stored on the charger. Advantageously, the arms of the arm are arranged with rolling means of the ball type (20) which are introduced by sliding on the arms (19,1) and thus allowing good evacuation of the sampled bags. The articulation of the arm is for example that illustrated in the drawings. The arm is positioned relative to a balance (21) comprising an L-shaped plate (22), the lower branch of which is coupled in an adjustable manner by a connecting screw (23) to an axis (24) disposed transversely on the frame. of the cover. Flanges (25) are arranged and fixed laterally on the frame and are arranged with an opening for the passage of the ends of the axis. Bearings (26) allowing the rotation of the axis are attached and fixed on the flanges. The L-shaped plate is coupled at its rear end with a L-shaped return piece (27) itself ensuring a connection with the branches of the aforementioned arm. The return plate is secured by screwing to the plate (22), while a return spring (28) is fixed to the spacer (18) and to the return plate so as to define a constant elastic deformation capacity. .

The balance, defined by the arm, the deflection piece and the profiled plate (22) pivots relative to the axis (24) within the limits which are defined by two limit switches (30-31). A first limit switch (30) is fixed to the connecting spacer (18) and is substantially in the horizontal position. Its stop part comes opposite the vertical free end of the profiled plate (22). This limit switch regulates the balance level.

The second limit switch (31) is disposed on the deflection face (27) while its end projects into an upper plane to come into contact, if necessary, with an adjustable stop (32) fixed in a vertical plane from the 'spacer (18) connecting. It allows when the machine stops the maximum tilting of the pendulum to cause its maximum support on the bags arranged on the loader and avoid their lifting.

The pressurizing mechanism is closely combined with the charger so that there is close coordination of operation. Thus in a maximum loading situation the balance is raised and the vertical part of the plate (22) is in contact with the limit switch (31). After successive removal of the bags, the pendulum swings down, which tends to raise its rear part and bring the second limit switch (31) into contact with the adjustable stop. By appropriate electrical and electronic circuits, the engine is reset and the bag loader continues to rise.

According to an advantageous arrangement of the invention, there is provided a control circuit, not shown, capable of being actuated directly by an operator and the cashier in particular. The circuit includes means making it possible to act on the loader motor, and to lower the latter in order to prevent the customer from grabbing the bags. This intervention can be carried out when the machine is put to rest and not used, or else as part of a voluntary and punctual intervention, if there is an excess of bag removal by the customer.

It should be noted that the pressurizing device is located towards the front of the machine and behind the hollowed-out central area of the cover. The device is therefore well protected.

An implementation of the pressurizing device having a few different arrangements has been illustrated, as it appears in FIGS. 8 and 11 and allowing increased capacity for adjusting the control of the distribution of the bags. As before, the spacer (18) is arranged in L and receives on its vertical branch a limit switch (30).

The lateral flanges (25) between which the axis (24) is arranged allow the positioning of the pendulum (22). The vertical branch of the latter receives an end stop (48) opposite the end stop (30) to control and regulate the tilting amplitude of the balance, the horizontal lower part of the balance is secured by screwing or other to a plate (49) for holding the underlying bags. The limit switch (27) is fixed to the inner side of the plate (18) and comes into contact with the abutment (50) associated with the lower wing of the balance. The balance is associated with the abacus arm (19) whose U-shape is arranged to receive a plurality of balls over its entire profile. The connection of the abacus to the pendulum takes place via a transverse connection plate (51). According to another arrangement, the end of the abacus, which bears on the bags, has, at the end, a test pattern (52) or equivalent means capable of constituting a means of adjusting and regulating the height of the position of the abacus-pendulum assembly depending on the change of bags. Next to the test pattern, a proximity detector (53) is then provided fixed on the frame of the installation in order to cooperate with said test pattern, the detector being associated with control means for controlling the positioning and pendulum articulation.

According to another important arrangement of the invention, one or more ramps of brushes or mats (54, 55, 56, 57) are used which can facilitate the separation of the bags from one another. Illustrated for example two ramps (54 - 55) of brushes arranged vertically on the lateral sides of the bags, as well as two ramps of brushes (56 - 57) which can act transversely on the edges of the bags. In the latter case, a first ramp (56) of brushes is arranged and fixed on the pendulum projecting downward, while a second ramp (57) of brushes is arranged fixed on the support member of the staff. The vertically arranged brush ramps (54 - 55) are adjustable in position to penetrate substantially and in a controlled manner into the thickness of the stack of stored bags.

In a particular implementation, the plate (49) for holding the bags and arranged by being fixed on the inner face of the cover (13) by one or more fixing means such as screws while leaving an amplitude of transverse movement as a function pressure of the bags. This plate is presented in a grid form with brushes visible downwards to come into contact over all or part of the surface opposite the upper bag presented. Such an arrangement allows suitable maintenance of the bags and their controlled distribution.

According to another important arrangement of the invention illustrated in Figures 17 and 18, the cover (13) is arranged in its lower part with a shutter member (58) capable of being translated to close the profiled opening for taking bags. More particularly, said member is a flap of shape and profile corresponding to the bottom of the cover, said flap being guided by profiled slides (59) formed in the cover body. The shutter is associated with a means (60) ensuring its movement. In a non-limiting implementation, this means (60) is constituted by a rack (61) meshing with a pinion (62) mounted at the end of a shaft (63) of a micromotor with reversible control. The latter can thus be requested by the operator and be ordered to open-close according to the conditions of use or non-use of the machine. This shutter constitutes additional security. It can be made of a transparent or other plastic material.

According to another particularly advantageous arrangement of the invention, the machine can comprise a device for crumpling bags. It has in fact been found that, depending on the nature of the material constituting the plastic bags, there could be a withdrawal of several bags simultaneously by their adhesion effect between them.

The machine is thus arranged with a crumpling device which is positioned near the opening for taking bags from the customers. The device thus comprises a profiled outer body (33) which is fixed by any means of connection to the cover. An opening (34) is provided on the cover and / or the plate (16) to allow the passage and bringing the crumpling device into contact with the bag. To this end, the device comprises an operating shaft (35) passing through the body (33) and having at its upper part a knob (36) for operating and gripping. A return spring (37) is introduced on the axis and abuts against a flange (35,1) formed at the upper end of the axis and on the upper face of the aforementioned body. The axis (35) extends at its lower end into the body to receive a profiled means (43) intended to come into contact with the upper bag. This means (43) can advantageously be a suction cup. Thus, the customer must perform an operation on the knob lowering the axis and allowing the suction cup to come into contact with the bag, then by carrying out a slight rotational movement of the axis on itself, it causes the upper bag to crumple by the action of the suction cup. The customer can then easily grasp the bag through the profiled opening formed on the cover. The crumpling operation can be carried out by a single support operation requested from the client by adapting the crumpling mechanism. The bearing movement on the axis by the customer simultaneously causes its rotation by any known mechanical means.

The machine according to the invention is particularly suitable for the controlled automatic distribution of bags. It can be included as is near a cash register in certain types of stores. It can alternatively allow a new layout of the bench by integrating therein as it appears in FIG. 3 of the drawings.

For this purpose, the cash desk (38) can have, beyond the reception areas (39) for goods and the optical reader (40) of the product bar codes, two reception bins (41) for goods extending by separate trays (42) for filling the bags and between which the machine according to the invention is arranged integrated into the bench. It is then conceivable that the machine is integrated as is in its housing provided for this purpose in the bench, or alternatively only introduce the carriage part, the frame and cover then being obviously arranged from the structure of the cash register cited above.

• La machine est compacte, démontable, de faible encombrement et de coût de revient réduit.
• La machine limite les interventions de la caissière et laisse à la libre initiative des clients le remplissage des sacs. Les clients ont le sentiment de prélever eux-même leurs sacs sans devoir les réclamer à la caissière qui peut en contrôler la quantité pour chaque client par une simple intervention sur le positionnement du chargeur de sacs.
• Sur le plan ergonomique la caissière n'aura plus à se contorsionner pour saisir les sacs manuellement sous le banc et les remettre aux clients. Cette manoeuvre répétée à longueur de journée peut entraîner, selon les études, des déplacements de vertèbres.
• La capacité de stockage des sacs est accrue d'environ 5000 à 8000 sacs et laisse une autonomie de plusieurs jours de travail. En outre, la machine est opérationnelle pour tous types de sacs, à bretelles ou non de dimensions variées en modifiant la longueur du plateau chargeur.
• La machine permet un contrôle précis des sacs utilisés, bloque la distribution en cas de non fonctionnement de celle-ci ou en cas de prélèvement abusifs du client. Le prélèvement des sacs s'effectue à l'unité et provoque une auto-régulation des clients.
• La machine comprend un dispositif de froissage particulièrement simple à mettre en oeuvre, d'une grande efficacité technique et qui constitue un système pouvant être particulièrement approprié pour valoriser l'intérêt de la machine.
• En dernier lieu, on souligne la parfaite adaptabilité de la machine et son intégration possible dans les bancs de caisses.

The advantages of the machine according to the invention are numerous and the main ones are recalled below:

• The machine is compact, dismountable, compact and low cost.
• The machine limits the cashier's intervention and leaves the filling of bags to the customers' own initiative. Customers have the feeling of withdrawing themselves their bags without having to claim them from the cashier who can control the quantity for each customer by a simple intervention on the positioning of the bag loader.
• Ergonomically, the cashier will no longer have to contort to grab the bags manually under the bench and deliver them to customers. This repeated maneuver throughout the day can lead, according to studies, to displacement of the vertebrae.
• The storage capacity of the bags is increased by approximately 5000 to 8000 bags and leaves several days of work autonomy. In addition, the machine is operational for all types of bags, with or without suspenders of various sizes by modifying the length of the loading platform.
• The machine allows precise control of the bags used, blocks the distribution in the event that the bags do not work or in the event of excessive customer withdrawal. The bags are collected individually and causes customers to self-regulate.
• The machine comprises a creasing device which is particularly simple to implement, of great technical efficiency and which constitutes a system which may be particularly suitable for enhancing the value of the machine.
• Finally, we emphasize the perfect adaptability of the machine and its possible integration in the cash desks.

Claims (22)

-1- Machine for the automatic distribution of plastic bags characterized in that it comprises a frame (1) of parallelepiped shape allowing the introduction, engagement and positioning of a loading device (3) of plastic bags (4) stacked and the different control means; and in that the frame has in its upper part an articulated cover (13) arranged to receive a device for pressurizing the bags, means allowing the unit to be removed from the bags, means allowing the remote control of the loader operation, and means for regulating the positioning of the loader device, in particular ensuring its locking in position in order to block the distribution of the bags. -2- Machine according to claim 1, characterized in that the frame is arranged to receive a movable carriage internally receiving the loading device (3), said carriage (2) being introduced into the frame by means position control, this means being a connecting device comprising an articulated arm (5) one end of which is fixed to the frame and the other to the carriage. -3- Machine according to claim 1, characterized in that the frame (1) internally receives a support structure (43) associated with an upper plate (6) receiving by stacking bags, said structure being movable in height by any suitable means . -4- Machine according to any one of claims 1, 2 and 3, characterized in that the frame or the carriage is arranged with a compartment internally receiving the means for controlling the movement of the loader, said loader comprising a tray (6) for receiving plastic bags. -5- Machine according to claim 4, characterized in that the loader displacement control means include an engine block (7) cooperating by transmission and return means (8) with a screw (9) disposed vertically receiving sliding a ring (10) support of the plate (6). -6- Machine according to any one of claims 3 and 4, characterized in that the plate (6) comprises two panels (6,1-6,2) forming drawers adjustable in spacing relative to each other in length. -7- Machine according to claim 1, characterized in that the frame receives on its upper face a hinged cover (13) arranged with a frame (14) consisting of profiled elements and allowing the positioning of a protection plane (15 ) and a plate (16) arranged with a profiled opening (17 - 47) authorizing the introduction of the user's fingers for gripping the bags one by one, said cover being arranged to receive and ensure the articulation of a bag pressurization device. -8- Machine according to claim 7, characterized in that the cover (13) has a recess (13,1) oriented on the inside of the machine against the internal face of which is fixed the plate (16) arranged with the opening ( 17 - 47), the depth of the recess being a function of the maximum position of the loader. -9- Machine according to claim 7, characterized in that the pressurizing device is fixed on a spacer (18) disposed on the frame of the cover and comprises an articulated arm (19) associated with a pendulum (21) articulated relative to an axis (34), stroke limiters (30-31) defining the limit positions of the device. -10- Machine according to claim 9, characterized in that the arm (19) is established with a U-shaped profile, the branches being fixed to the balance and the bottom part in abutment on the upper bag stored on the charger. -11- Machine according to claim 9, characterized in that the arm (19) is arranged on all of its branches with a plurality of balls (20). -12- Machine according to claim 10, characterized in that the balance comprises an L-shaped plate (22) whose lower branch is coupled by a connecting screw (23) to an axis (24); flanges (25) arranged and fixed laterally on the frame ensuring the fixing of the bearing (26) for rotation of the axis (24); a reference piece (27) authorizing the connection between the arm (19) and the pendulum (9); a return means (28) being fixed to the frame and to the reference piece. -13- Machine according to claim 9, characterized in that a control means is capable of being actuated by a party by acting on the pressurizing device and on the position of the bag loader to block or generate bag removal. -14- Machine according to any one of claims 1 and 7, characterized in that it includes a bag crumpling device. -15- Machine according to claim 14, characterized in that the bag crumpling device is integrated into the cover of the machine and comprises a profiled outer body (33) fixed to the cover, an opening (34) being formed on the cover and / or the plate (16) having the opening for gripping the bags, said body receiving a retractable means capable, by a combined translation-rotation effect, of being in contact with the upper bag and causing it to crumple. -16- Machine according to claim 15, characterized in that the body (33) receives an operating pin (35) having at its upper part a gripping knob (36) and for maneuvering and at its lower part a suction cup (43 ) likely to be in contact with the bag, the axial movement against a return means (37) ensuring the rotation of the suction cup and the wrinkling of the bag. -17- Machine according to claim 1, characterized in that it comprises one or more ramps or mats (54, 55, 56, 57) receiving brushes to allow support and contact on the stacks of bags, ramps (54, 55) being arranged vertically in the frame in lateral adjustable contact against said bags, and ramps (56, 57) arranged horizontally coming to bear on the apparent bag. -18- Machine according to claim 17, characterized in that the cover is arranged internally to receive a plate with controlled transverse movement, said plate having on all or part of its surface brushes capable of coming to bear on the face opposite the upper bag placed on the magazine. -19- Machine according to claim 7, characterized in that the opening (47) is eccentric relative to the median plane of the support plate, and is profiled with a central zone (47,1) widened and flared by extending ( 47,2) on both sides, the ends of the extensions being substantially curved. -20- Machine according to claim 7, characterized in that the cover is arranged in its lower part to receive a shutter member movable transversely under the action of a control means controlled by the operator. -21- Machine according to claim 10, characterized in that the balance is associated with the abacus (19) via a connecting means, the end of said abacus being arranged to receive a test pattern (52) constituting a means for adjusting and regulating the height of the position of the abacus-balance assembly, and in that a proximity detector (53) is fixed to the frame of the installation opposite said pattern to control, as appropriate, the movement of the pendulum, and thus controls the elevation of the bag loading device. -22- Machine according to claims 1 to 21 together, characterized in that it is integrated in a cash register.

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