PACKAGING MACHINE OF CARAMELO
Field of the Invention The invention relates to a candy pallet packing machine. BACKGROUND OF THE INVENTION It is known to pack candy pallets with the so-called packer packer method, wherein the candy pallets in an individual condition are supplied in series to a drum having a fixed part of a drum and a part thereof. of drum that rotates around a horizontal axis, in which a series of assemblies is placed that circulate along, each one of the assemblies has a candy clap stick holder, a candy pallet head support and two Diaphragm arms provided with heating elements. At the location of a receiving station, the candy pallet makes contact on the drum through the stick holder, wherein the candy blade head is located a short distance on the front of the open diaphragm. Meanwhile, an end portion of a thin sheet metal strip is fed and cut from the strip as a sheet of thin sheet metal, once the candy blade head support, which extends to Through the diaphragm, press the sheet sheet REF. 176549
thin metal against the head. Subsequently, in the progressive or forward rotation of the drum portion that can be rotated, the stick holder and the candy vane head support are moved towards the diaphragm, where the candy vane head is moved. through the diaphragm to the other side of it. Then, the sheet of thin metal sheet is bent by means of the diaphragm arms against and around the head of candy trowel. As soon as the caramel trowel head has passed through the diaphragm, the diaphragm arms are moved towards each other in order to bend the sheet of thin metal sheet behind the caramel trowel head. Subsequently, the stick holder and the candy vane head support are rotated about their center lines in order to twist the part of the sheet of metal sheet which is located behind the vane head of the vane head. Candy around the stick. Subsequently, the heating elements are activated to seal the part of the thin sheet of metal next, the diaphragm arms are separated one more time and the candy paddle is moved back by the stick holder, after which it is removed. which, the candy palette is extracted or removed by a remover and the assembly in question is able to continue through a following cycle.
For the movement of the stick clamp and the candy vane head support, these are provided with operating parts, which circulate in fixed curved pathways that are channel-shaped, configured in a curved plate, and confine the part of operation, normally a roller, in a radially inward and radially outward direction, each of the diaphragm arms is rotatably mounted on a rotatable drum part, around the central lines of rotation which are parallel to the central line of rotation of the drum, and are diverted towards each other by means of a spring. One of the arms is extended beyond its point of rotation and at the end is provided with an operating part that is in clutch with the fixed curve ways. The radial movement of the operating part through the curved tracks causes the rotation of the arm, and due to the coupling of the arms to each other in a simultaneous counting rotation of the other arm. In the seal path, the operating part of the diaphragm arm is radially confined in a channel formed in the curved plate in question. For the individualization, the packing machines normally comprise the so-called classification / distribution disk, which in its circumference is provided with a series of accommodation spaces for the
caramel trowel heads, where the sticks are capable of extending radially outward in order to be easily captured by the stick fasteners of a transporter in transit. When there is a change in the diameter of the candy pallets that will be packed, the sorting disc can simply be replaced by a sorting disc having accommodation spaces of another diameter. In the drum, use can be made of the stick clamp and the candy paddle head supports that are already present. However, the folding of the thin sheet metal sheet around the caramel trowel head, in the case of a larger difference between the aperture determined by the diaphragm arms and the diameter of the head of the candy trowel , it could lead to undesirable folds and folds in the sheet of thin metal sheet folded around the candy paddle head. In order to avoid this, the drum has to be adapted by replacing its unit on which the diaphragm arms and related operating parts for the arms and heating elements are located. This is a time consuming operation. In addition, several units adapted to the different caramel head diameters would have to be purchased and kept ready. The effort that will be made to replace the unit may give rise to the option not to perform
a change that is really necessary, which in turn causes defective and poorly packed candy palettes. BRIEF DESCRIPTION OF THE INVENTION An object of the invention is to improve this. From one aspect, the invention provides a candy vane packaging machine, which comprises a drum having a fixed drum part and having a rotatable drum part that includes a series of stick clips, a provisioning of the candy lollipops to the stick holders and a provisioning of packaging material from the candy lollipops, such as a thin sheet of metal, to the drum, a discharge for the emptying of the lollipops packed outside the drum, wherein the supply of packaging material is adapted to consecutively bring a sheet of packaging material to the front of the candy vane heads, wherein the drum is also provided with means that move relative stick holder and the sheet of packaging material in a first path on the drum in order to allow the sheet to wrap or surround the head of candy lollipop, wherein the portion of drum that can be rotated is further provided with a diaphragm in each stick holder, the diaphragm is located on the side of the
sheet of the packaging material that is oriented away from the head of the candy vane in order to place the sheet around the head in the relative movement of the stick holder and the sheet of the packaging material, in which the head moves through the aperture defined by the diaphragm, wherein the diaphragm is further provided with means for a second following path on the drum that seal the packaging material at or almost the location of the transition from the head to the stick, where the drum is further provided with the first adjustment means which previously regulate the size of the aperture of the diaphragm at the location of the first path. With the provision according to the invention, the opening of the diaphragm can be adjusted to the diameter of the head of the candy vanes which will be packed without having to replace the complete unit, including the diaphragm and related parts. In this way, it is possible to obtain packed lollipops, the thin metal sheet of which rests on the head very well and tightly. In a manner known per se, the diaphragm could comprise two diaphragm arms, which can be moved towards and away from each other and are provided with sealing elements. The two diaphragm arms could be coupled together for their opposite and simultaneous rotation.
In a preferred embodiment, the diaphragm is provided with an operating part that determines and alters the aperture of the diaphragm during rotation of the rotatable drum part, wherein the fixed drum part, at least in the first path , is provided with a first curve path that directs and moves the operation part during drum rotation, wherein the first adjustment means comprise means that regulate the mutual position of the operation part and the first curve path. Preferably, the first adjustment means are adapted to regulate the position of the first curve track on the fixed part of the drum, so that not all diaphragms need to be adjusted by themselves, in advance, using the means placed on each diaphragm by itself. In one embodiment, the operation part is adapted during the radial outward movement to reduce the opening, wherein the first curve path is located on the radial outside of the operating part in order to form an adjustable limitation. Preferably, the operating part in the radial interior is free of the first curve path. Preferably, the diaphragm is biased towards a more closed or smaller position of the opening. The first curve path forms a limitation radially outward
for the operation part and in this way, the degree to which the diaphragm is closed, wherein the deviation force guarantees a stable support of the operation part. In a simple construction mode, the first curve path is formed on a bent sheet-shaped plate extending in the circumferential direction of the drum, this plate is provided with a first guide edge for the operation part, wherein First adjustment means are adapted to regulate the radial position of the first guide edge. By adjusting the radial position of the strip-shaped plate, which can for example be done by unscrewing the bolts with which the plate is attached on the fixed drum part and after the adjustment are tightened once again, the radial position of the edge of guidance for the operation part can be adjusted in this location. In a further embodiment, the first curve path in the process direction, directly or remotely, is continued by a second path in curve with a second guide edge that engages with the operation part in order to maintain the diaphragm in the sealing position in the second path, once the thin sheet of metal has been folded behind the head by means of the diaphragm closure.
Preferably, the second curve path is located in the radial interior of the operation part. In a simple embodiment, the radial outside operation part is free of the second curve path. In the known drum, use is made of a curve plate provided with a channel in which the operation part is guided on two sides. In this arrangement, the second curved plate is articulated in the fixed part of the drum, and a counter that can move radially inward of the pressure of a cylinder. In this way, when a sheet of thin metal sheet behind the candy paddle head is relatively thick, the curved track for the operating part can be displaced radially inwardly, as a result of which, the Diaphragm will also open to provide the necessary additional space to the thickening. One drawback is that this displacement is made for all the operating parts that are then in the channel, as a result of which, in case this thickening does not exist, the closure behind the head will not be sufficient. According to the invention, by keeping the outer radial diaphragm free, it is free to open in order to offer space for the thickening. The previous deflection of the diaphragm guarantees a permanent and sufficient clutch of the sheet by the diaphragm.
Preferably, the second curve path is formed on a curve plate having a guiding edge for the operating part that coincides with an arc of a circle that is concentric with the center line of the drum. Likewise, it is preferred that the position of the second track on the curve can be adjusted in the circumferential direction, in order to follow the adjustment of the first track on the curve and possibly with it an intermediate path, which will still be discussed, if present . Preferably, the adjustment is along the arc of a circle, as a result of which, the adjustment can be made in an easy and controlled manner, for example, by unscrewing and once again tightening the screws on the fixed drum part. . In one embodiment, the drum comprises an axis, wherein the curve plate on one side of the shaft is articulated in a coupling plate, wherein the coupling plate and the curved plate on the other side of the shaft are connected together by means of of a bar, wherein the coupling plate is tightly connected with the fixed part of the drum. Preferably, an elastic element is placed on the bar to push the curve plate in the radial direction towards the outside, wherein the bar is provided with a stop for the radial movement outwardly of the curve plate. In an additional development, the first curve path
changes to a third path in curve, provided with a third guide edge for the operation part in order to close the diaphragm, which also comprises the second adjustment means that regulate the position of the third guide edge in the circumferential direction of the drum. In this way, it is ensured that the diaphragm bends the thin sheet of metal directly behind the head of the candy paddle, so that the thin sheet of metal rests there strongly. The adjustment is made depending on the length of the head of the candy palette. Preferably, between the third and second curved pathways, an intermediate superposition path is formed, in which the diaphragm is closed and in which, preferably, a passage is formed having a width corresponding at least to the thickness of a stick. In order to ensure a two-sided guide and as a result a reliable guidance of the operating part in the intermediate path, means are additionally provided that elastically deflect the second track in a radial direction towards the first curve track. From a further aspect, the invention provides a candy vane packing machine, which comprises a drum having a fixed drum part and a rotatable drum part, which includes a series of stick fasteners , a
provision of the candy lollipops to the stick holders and a supply of packaging material from the candy lollipops, such as a thin sheet of metal, to the drum, a discharge that empties the lollipops packed outside the drum, wherein the supply of packaging material is adapted to consecutively bring a sheet of packaging material to the front of the candy vane heads, wherein the drum is additionally provided with means that move the stick holder relatively and the sheet of packaging material in a first path on the drum in order to allow the sheet to wrap around or surround the candy blade head, wherein the drum portion that can be rotated further is provided with a diaphragm at each end. Stick holder, the diaphragm is located on the side of the sheet of material that is oriented out of the head of candy trowel with e In order to position the sheet around the head in the relative movement of the stick holder and the sheet of the packaging material, in which the head moves through the opening defined by the diaphragm, wherein the diaphragm is furthermore provided with means in a second following path on the drum that seal the packing material at or near the location of the transition from the head to the stick, wherein the diaphragm is provided with operating means that
the size of the passage in the diaphragm during the circulation of the drum part capable of being rotated, wherein the operating means comprise an operating part, wherein the fixed part of the drum is provided with a curved path for the part of operation, wherein the drum is furthermore provided with the first adjusting means that regulate the radial position of the curved track for, the operation part. Preferably, the adjustment means are operative on the curved path at the location of the first path. Preferably, the packaging device is further provided with the second adjustment means that regulate the circumferential position of the curved track, in particular, in connection with the first path for closing the diaphragm. From a further aspect, the invention provides a candy pallet packing machine, which comprises a drum having a stationary drum stationary part and having a drum part that can be rotated with respect thereto and includes a series of stick fasteners, a supply of candy pallets to the stick fasteners and the provisioning of packaging material from the candy pallets, such as a thin sheet of metal, to the drum, a discharge for
the emptying of candy pallets packed out of the drum, wherein the stocking of packaging material is adapted to bring a sheet of packaging material consecutively to the front of the candy vane heads, wherein the drum is additionally provided with means that relatively move the stick holder and the sheet of packaging material in a first path on the drum in order to allow the sheet to wrap or surround the candy blade head, wherein the drum part Further capable of being rotated is provided with a diaphragm in each stick holder, the diaphragm is located on the side of the sheet of the packaging material which is oriented away from the head of the candy vane in order to position the sheet around the the head in the relative movement of the stick holder and the sheet of packaging material, in which the head moves through the opening defined by The diaphragm, wherein the diaphragm is further provided with means in a second following path on the drum that seal the packing material at the location of the transition from the head to the pole, wherein the drum is further provided with adjustment means that previously regulate the closing moment of the opening of the diaphragm consecutive to the first trajectory. In this way, it is ensured that the diaphragm bends the thin sheet of metal directly through
behind the head of candy trowel, so that the thin sheet of metal rests strongly there. The adjustment is made depending on the length of the head of the candy palette. BRIEF DESCRIPTION OF THE FIGURES The invention will be elucidated on the basis of a number of exemplary embodiments shown in the appended figures, in which: Figure 1 shows a schematic front view of a candy pallet packaging device according to the invention; Figures 1A, 1C, 1E show schematic views of the process for placing a sheet of thin sheet metal around the head of a candy blade, in consecutive stages; Figures 1B, 1D, 1F show the position of the diaphragm arms in the stages shown in Figures 1A, C, E; Figure 2 shows a view of a fixed part of the drum of the packaging station; Figures 3 and 3A show, respectively, a view corresponding to that of Figure 2, in which the consecutive positions of the diaphragm arms are drawn for a candy blade having the shape shown in Figure 3A; Y
Figures 4 and 4A show, respectively, a view corresponding to that of Figure 2, wherein the consecutive positions of the diaphragm arms are drawn for a candy vane having the shape shown in Figure 4A. DETAILED DESCRIPTION OF THE INVENTION The candy pallet packaging machine 1 shown in Figure 1 comprises a frame 2, in which, among others, a sorting and distribution disc 3 is placed driven around a vertical central line S in the direction A, in which the disc candy vanes supplied in bulk are individually in the known way. For the removal of the candy vanes from the distribution disc 3, a removal roller 4 is placed, which rotates in the direction B. From the removal roller 4, the candy vanes are moved to a first disc transfer 5 driven in the direction C, subsequently, to a second transfer disk 6 which rotates in the direction D, and subsequently, to a third transfer disk 7 which rotates in the direction E. From the transfer disk 7, the candy vanes are transferred to a drum 8 of wrapping station 100, this drum is rotated in the direction F and in which the candy vanes are surrounded
with a thin sheet metal material supplied to them for packaging. The packed candy vanes are emptied into a discharge disk 9 which rotates in the G direction and discharges the candy vanes packed, for example, into a discharge chute (not shown). The drum 8 has an axis 11, with which the rotatable part 50 is rotated (also seen in Figure IA). A series of assemblies 10 of stick fasteners, wrappers and diaphragm arms is located in the rotatable part 50. Figure IA shows the mutual position in axial direction of some parts of these assemblies 10. On the left hand side , a stick holder 20 is shown, which has the holding member 21 with a stick S, in which the candy vane head R can be held firmly in the revolution of the drum part 50. On the side In the right hand side of the candy vane head R there is a cap or lid 23 attached to the end of a rod that moves reciprocally in the axial direction 22, of which the axial position is defined in a manner known per se by means of a curve that is not shown and that is part of the fixed part of the drum 8. The bolt 22 extends through a sleeve 29, in which a pair 25 of wrap arms 26a, 26b is articulated. in the location of the points of
articulation 27, wherein the sleeve 29 is provided with teeth that are not shown, which mesh with a rack which is also not shown and which belongs to the fixed part of the drum 8. The sleeve 29 is mounted to rest rotatably on the bearing 28. On the side, the pin 22 is provided with the teeth 22a engaging with the teeth on the wrap arms 26a, 26b in order to rotate them when the pin 22 moves. On the left-hand side of the wrapping arms 25, a mounting 30 of the diaphragm arms 31a, 31b is located, which are also shown in Figure IB. The diaphragm arms 31a, 31b are provided with the heating elements 32a, 32b so that they are capable of sealing the sheet of sheet metal. The diaphragm arm 31a is shorter than the diaphragm arm 31b and a particularity is that it is provided with an operation arm 33 having an operation part 34 designated as a roller. The operating arm 33 is located on the same side as the mentioned teeth (not shown) of the sleeve 29. The arms 31a, 31b, respectively, are fixedly connected by rotation on the shafts 36a, 36b. The operating arm 33 is fixedly fixed by rotation on the axis 36a. The operating part 33 forms a fixed unit with the part 35a, which is provided with the teeth 37a which engage with
the teeth 37b on the part 35b which is fixed by rotation at the inner end of the shaft 36b. With a spring that is not shown, the arms 31a, 31b are deflected towards each other. By rotating the part 35a, induced by the movement of the roller 34, the arm 31a will rotate, where due to the engagement of the teeth 37a, 37b, the arm 31b will rotate to an equal extent in the opposite direction. In Figure IB it is shown that the opening 0 which is left free by the diaphragm arms 31a, 31b is adjusted to the size of the head R of the candy blade. FIG. 1A shows the moment in which a sheet of metal sheet for the head R is already supplied and is subsequently secured on the head R by means of the cover 23, after which the sheet of sheet Thin metal is cut from the band of thin sheet metal material from which it originated. Subsequently, the fastener 20 in a manner known per se that is not shown, is moved to the right, as considered in the figure, in order to pass the sheet of metal sheet F and the head R to through the opening O, within the reach of the wrapping arms 25. The pin 22 is moved along. In Figure IC, the thin metal head R has almost been passed through the opening O. As a result of the
light play of the head R with respect to the diaphragm arms 31a, 31b, the thin metal sheet S has been wrapped in a pressurized cover and in a soft mode around the head R. The diaphragm arms 31a, 31b now they are moved towards each other according to the influence of the spring that connects the arms to each other (Figure ID). In Figure IE, the passage of the candy vane head R with the thin sheet of metal F has been completely passed through the opening O. The diaphragm arms 31a, 31b are clamped around the stick S, while it fixes the part Fl of the sheet of thin sheet metal F that is placed around the stick. As a result of the engagement of the teeth of the arms 26a, 26b with the teeth 22a on the bolt 22, the wrap arms 26a, 26b have been brought into a position engaging with the head R in a return movement of the bolt 22. In this case, the design is such that the lid 23 in the position shown in Figure IC remains slightly free of the caramel blade head R. Subsequently, the sleeve 29 and thus the wrap arms 26a, 26b are rotated around the candy vane head R, wherein the holder 20 maintains the attachment of the stick S and the sheet metal sheet part Fl. As a result, the leaf blade
thin metal F is twisted behind the head R. The part Fl is then also sealed by the activation of the heating elements 32a, 32b. Once the twisting and sealing processes have been completed, the diaphragm arms 31a, 31b are once again opened and the fastener 20 is moved once more backwards so that it is capable of emptying the candy pallet into the discharge station 9. Then, a new cycle can be started again. Figures 2 and 3 show, in a schematic way, where the different trajectories are located. In the trajectory K the head R is passed through the opening O. In the trajectory L the processes of twisting and sealing are carried out. In the path "M" the additional twisting and sealing processes can be carried out, and the path N is effected in the discharge Fig. 2 shows a view of the fixed drum part 60 of the drum 8. A number of curve plates 61, 62 , 64 and 65 has been located in the plane of the curve path of the roller 34, these curve plates are provided with the respective guide edges 91 and 92, 93, 90 and 94 for the roller 34. The curve plate 64 is located at the unloading station, at the end of trajectories M and N and is joined
with drum 60 by means of screws 84a, b. With its radial inner component, the guide edge 90 will direct the roller 34 towards the interior, in order to separate the diaphragm arms 31a, 31b, in order to make it possible for the caramel paddle head to be moved back in the direction axial. At the location of the screws 83a and 83b, the curve plate 61 is joined with the protrusions 60c and 60d which are fixed with the fixed edge 60a of the fixed drum part 60. The screw 83b extends through an elongated hole oriented in radial direction in the plate 61. The guide edge 91 of the curve plate 61 changes slightly towards the edge section located more in radially outward direction 92 by means of a light fold. An adjustment bolt or bolt 111 is a nest in the curve plate 61, the head 112 of the adjustment screw can be operated and from which the tip 113 abuts the fixed edge 60b. By rotating the screw 111, after some unscrewing of the screws 83a, b, the plate 61 can be rotated in the direction W, around the point of rotation formed by the screw 83a. In this way, the radial position of the edge 92 is adjusted and therefore, the radial curve path of the operation roller 34 is adjusted in the path K. The curve plate 65 is in the extension of the plate 61, and is connected to it by means of the
screws 82a, b extending in the. elongated holes 81a, b, which in turn extend in a circumferential direction. The elongated hole 81a is wider than the screw 82a. The plate 65 rests on the edge 60b with the tip 65a. By means of some unscrewing of the screws 82a, b, the position of the plate 65 in the circumferential direction can be adjusted, and in this way, its guide edge 94 having a convex and concave trajectory. In this way, the closing moment of the diaphragm arms can be adjusted. The wider elongated hole 81a allows some rotation of the plate 65 around the screw 82a, so that securing it can ensure that the tip 65a abuts the edge 60b, and the position of the roller 34 in this location can always be the same . The guide edge 93 of the curve plate 62 is circular and has a displacement inlet section 93a, which with the guide edge 94, defines a passage 108 for the roller 34. The width of the passage 108 is slightly larger that the diameter of the roller 34. The curve plate 62 is hinged in the fixed drum part 60 by means of a screw 101. The screw 101 extends through an elongated hole 66 in the fixed drum part 60. The screw 101 also extends through a suitable hole in the bent plate 63, which extends upwards about the axis 11. The plate 63 is provided with
the elongated holes 67a, 67b through which the releasable fastening threaded screws 68a, 68b extend in the appropriate threaded holes in the fixed drum part 60. At the upper end in the location 69, the plate
63 is connected to a bar 70, which at the other end 74 is hinged at the upstream end of the plate 62. A stop 71 is provided on the bar 70, this stop forms a unit with the end of the bar, and serves as a stop for a compression spring 73, which is attached to the plate 72 at the end location adjacent to 69. As a result, an elastic compression force oriented in the radially outward direction is exerted on the plate 62, around of the articulation / screw 101. In Figure 3, the curve plate 61 has been placed in the position shown in Figure 2. The opening O between the diaphragm arms 31a, 31b is fitted to the candy pallet shown in Figure 3A, with a diameter of say, for example, of 35 mm. The opening O is then, for example, adjusted by 43 mm. Due to the location, considered in the radial direction of the drum, of the curve plate 61 and therefore of the guide edge 92, the position of the roller 34 in the path K is also the determined radial direction and therefore the position mutual of the diaphragm arms
31a, 31b and in this manner, the size of the opening 0, in this case, fitted to the candy vane head shown in Figure 3A. Due to the elastic force exerted on the diaphragm arms 31a, 31b in one direction towards each other, the roller 34 is kept resting adequately on the guide edge 91 and the guide edge 92. In the middle section, where the guide edge 94 is located, the roller 34 is confined between the guide edge 94 and the guide edge 93. The sliding entry section
93a of the guide edge 93 ensures a smooth insertion of the roller 34 into the passage 108 formed therein. As soon as the largest diameter of the candy vane head has been passed through the opening O, the diaphragm arms 31a, 31b can be closed, which takes place, after adjusting the adjusting screw 111 , in the intermediate trajectory in the location as a function of the length of the head of the candy vane, guided by the edge 94, limited inward by the guide edge 93a and a part of the edge 93. When the roller 34 leaves the passage 108, the roller
34 is only guided in the radial direction inwards by means of the guide edge 93. The position of the guide edge 93 is selected, so that the diaphragm arms are not completely closed, but offer space to the stick
and to the thin sheet metal wrapped part Fl. When a thin thick metal core of the thin sheet metal part Fl is being formed, a force in radial inward direction can be exerted by the related roller 34 on the guide edge 93 and therefore, on the plate curve 62, which by means of adjusting the elastic force of the spring 73, is capable of flexing slightly in the radial direction towards the interior. The guide edge 93 is positioned, so that a suitable pressure force is exerted in place on the roller 34 and therefore, sufficient force can be exerted through the diaphragm arms 31a, 31b on the part of Thin sheet metal wrapped Fl during the sealing and wrapping processes. Once it has reached 66, the downstream end of the curve plate 62, the pressing force is no longer needed, and the curve plate in the next path can be eliminated, in the path of which it can still be removed. seal and wrap. When the candy paddles of another size of caramel trowel head are treated, the operator could open the drum 8, in the manner known per se, and could gain access to the mentioned screws in order to unscrew them in a light and subsequently, slide the curve plate 61 in the circumferential direction
(direction V) and later, you could press the screws once more in the desired position. By unscrewing the screws 68a, 68b and the screw 101, it will also be able to rotate the assembly of the curve plate 62, the plate 63 and the bar 70 (in the directions Q and T), so that the position relative to the guide edge 92 and the guide edge 93a are assumed in the new situation. The passage 108 has to be adjusted to the diameters of the roller 34, which in this setting is not replaced. In Figure 4, an example situation after adjustment is shown, where the candy pallet shown in Figure 3B having a head diameter d 3 eg 18 mm can be treated. The diameter of the opening O can in this case be d4, for example 23 mm. The process and location along the circumference of the different parts of the process are in this case the same as in Figure 3. It is noted that in relation to this date the best method known by the applicant to carry out the practice said invention is that which is clear from the present description of the invention.