DE2559272A1 - PROCESS AND MACHINE FOR MANUFACTURING PIPES, IN PARTICULAR FROM CARDBOARD, WITH A DIFFERENT PROFILE TO THE INITIAL PROFILE - Google Patents

Description

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Rod ', Macchine SA, Norancc {Sch'reiz)

Process and machine for the production of pipes, in particular from cardboard, with a profile that differs from the initial profile Profile.

The present invention relates to a method of dividing of pipes by stretching, in permanently deformable material with profile different from the original profile.

For example, if the cross-section of the outlet pipe is circular, then this can be converted into a square, rectangular, triangular shape, for example, with the aid of the present method or polygonal cross-section, etc. are deformed, where all have a rounded vertex, for example, or

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also in another, even or uneven Cross-section can be changed.

This is essential in the production of boxes, packs for bottles and for other purposes Importance.

The process forming the object is characterized by that the output tube is attached to a heatable and exchangeable mold, which has at least one point that the can assume the desired end profile corresponding profile, and with at least one profiling process the tube the desired Profile granted, after which the profiled tube is unloaded from the mold.

The present invention also provides a Method for carrying out the above-mentioned process, characterized by a clockwise rotatable, a plurality of heatable and frames supporting interchangeable molds, each having or capable of at least one point Assume end profile corresponding cross-section, as well as parts, so during a rotation of the aforementioned In the framework of each shape, carry out the various following operations: inserting the pipe to be treated, profiling and Unloading the profiled pipe.

The attached drawings illustrate, for example, without being limited to them in

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Pig. 1 shows a schematic plan view from above of an inventive Machine,

2 shows the associated side view,

3 and 4 the connection of the two a form according to the invention forming parts for deforming by stretching the round cross-section of the starting tube into a square with rounded Edge;

Figures 5 and 6 the embodiment of the two, one according to the invention Shape-forming parts, for deforming by stretching the circular cross-section of the starting pipe into a triangular one Cross-section with rounded edges,

Figures 7 and 8 the form of the two parts for the inventive deformation of the circular cross-section of the starting ^ tube into a uniform, polygonal cross-section with rounded edges,

Fig. 9 shows the machine according to FIG. 1 in plan view from above, with additional parts that give the tube a bottom or a bottom before the deformed tube is ejected from the mold Put on ceilings,

Fig. 10 shows in longitudinal section a pistol, which is the attachment the purpose of an adhesive inside the pipe end, for this purpose this pipe end before the attachment of the The bottom protrudes from the mold,

Fig. 11 shows the front view thereof.

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Referring to Figures 1 and 2, the machine exists from the clockwise around the vertically arranged axis 11 and via a pneumatic, conventional and therefore in the Drawing not shown mechanism 8, rotatable frame.

The frame rotates 9U with each clock step off, thus a full turn after four clock steps.

The vertical axis 11 thus supports a unit of four expandable forms, each of which consists of two parts 2, 2 ¹ ; 3, 3 ¹ ; k, 4 ¹ J 5, 5 ^f consists.

The output tube (FIG. 1) is initially inserted in the direction of arrow 12 into the mold 2, 2 ¹ which is closed, that is, as FIG. 3 shows, for example, is not expanded.

Via the cam 7 and the lever-shaped plunger 6, the mold 2, 2 ¹ moves from position A to position B during the first clock step from position A to position B, which proceeds in the direction of arrow 13, and the mold 3 opens beforehand , 3 'occupied extended form engaging, and thereby the cardboard tube for example, the k as shown in Fig. ¹ and designated with 9 square or rectangular cross section with rounded vertices ER' sharing.

In the meantime, the form 3, 3 ¹ , which previously occupied the position B, is always over the cam 7 and the

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speaking heb ^ lc.rt jr; --vis formed ram to C, while aie form k, A ¹ will have shifted nai-'h D and the pulling out of the shaped tube 9 ¹ in the direction of the arrow Iu, during the standstill time of the frame, ensured, while, in addition, the introduction of a new tube V in Λ takes place.

The finished pipe 9 'becomes in this particular case Conveyed away via the conveyor belt 10 or other mechanical processes (FIG. 2).

The method and the machine according to the invention can be used for the shape by stretching any permanently deformable Materials are used, but are preferably used for the deformation of cardboard tubes.

The shapes are created using electrical resistances other heated, with the occurrence of difficulties in the deformation, the starting tube can be moistened beforehand.

The achievable profiles are, for example, in the figures 3 to 8 shown, of various kinds.

Another type of deformation can always be used within the scope of the invention are provided.

The profiles 2, 2 ·; 3, 3 ¹ etc. cannot be divided into two parts, but consist of only one part and have an increasing cross-section, ie they are frusto-prismatic.

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In the area of the largest cross-section, these have the Profile of the pipe to be deformed. For profiling, the tube is pushed axially into any shape and forced over to be moved away from the region having a maximum cross section.

The process and the machine are shown in the figure preferred, especially since these give a reliable result without waste.

Referring to FIG. 9i, the outlet pipe 9 is according to FIG Figure 1 in position A pushed onto the mold, but not corresponding to its full length, with a part of the same is left protruding slightly. On the way from A to B the pipe is profiled.

In position B, a heat application of adhesive is used Gun provided with two, three or four nozzles 15 normal, commercially available type, but with a special extruder head Moved via a mechanism 17, which is not shown in detail and which is known as such, x ^ elche the introduction of the extruder head in the part of the pipe left by the mold. After that, the head will be accordingly the number of nozzles 16 given a rotary movement of 180 °, 120 ° or 90 ° in the direction of arrow 21.

The rotation is thus equal to 360, divided and the number of the nozzles.

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During this rotary movement, the nozzles are used to output of the warm glue, in such a way that it is on the inside applied to the pipe end and there forms a continuous, even ring.

After the glue has been applied, the gun will reverse driven, the mold is now free to be brought into position C for the introduction of the floor.

Is of the bottom, a cover "provided for adhering to the tube in place, the adhesive ¹ is preferably mounted in a similar manner, the inside of the lid.

In position C, a magazine 18 for operating (or Lid) of various types and materials of which one 19 is pulled out and in front of the one previously provided with adhesive Tube aligned. A plunger 20 inserts the base into the pipe or pushes the cover provided with adhesive onto the Pipe. This is then moved to position D, where it emerges with the bottom or the attached lid,

It is obvious that, without deviating from the basic concept of the present invention, the cross section of the profiled tube can be of any shape.

The application of the method and the machine according to the present invention has proven itself in practical use, in connection with the subject matter of the Swiss patent application 4290/74 for deformation, filed on March 25, 1974

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from by Kaltverkleunn; obtained pipes with a round cross-section, with a very substantial increase in the hourly output Proven to be very effective. It is still provided that with glue that has been applied warm thermosealable or similar adhesives and by a wide variety of Machine-made pipes can be used.

Another very important advantage that can be achieved by this machine according to the invention is that the profiled, expanded tubes which may have been previously opened the exit pipe printed labels and figures, yet Do not damage any raised protruding parts in any way.

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Claims (13)

Patent (protection) claims 1.] A method for the production of pipes by stretching, in permanently deformable material, in particular cardboard, with the starting ^{profile differing n} rofile, which does not damage labels, figures, nor protruding parts present on the starting pipe in any way, characterized in that the starting pipe is on a heatable and replaceable mold is attached, which has at least one point that can adopt the profile corresponding to your desired end profile, and gives the pipe the desired profile with at least one profiling process, after which the profiled pipe is unloaded from the mold. 2. Machine for performing the method according to claim 1, characterized by a clockwise rotatable, a plurality frames carrying heatable and interchangeable molds, each having at least one point or being able to do so to assume the desired end profile corresponding cross-section, as well as parts, so during a rotation of the aforementioned In the frame of each shape, carry out the following various operations: inserting the pipe to be treated, profiling and unloading the profiled tube. 3. The method according to claim 1, characterized in that the shape is designed such that by expansion of the dem 609844/0724 - io - 2bb9272 Finally, the profile cross-section corresponding to the pipe is achieved whereby the unloading of the profiled pipe by pulling it off, after the mold has contracted. 4. The method according to claim 1, characterized in that the shape has an increasing cross-section and only in the area of the largest cross-section has the end cross-section corresponding to the pipe to be profiled, the pipe through axial insertion into the mold and forced displacement across the largest cross-section of the mold will. 5. The method according to claims 3 and 4, characterized in that the tube consists of cardboard and prior to insertion into the heated mold is moistened. 6. The method according to claims 1 and 3 to 5, characterized in that that in front of the section where the pipe profiled by means of the mold is ejected, a bottom, respectively, at the pipe end a lid is attached. 7. The method according to claim 6, characterized in that the pipe to be profiled, to which a base are attached must, is made to protrude from the mold by a length which is sufficient for a layer of adhesive in the area of the lid to be applied inside the pipe. ■ 609844/0 724 -n- - ii - 2 b b 9 2 7 2 8. Machine according to claim 2, characterized in that each shape is expandable, so that this by expansion the dem can assume the desired end profile of the pipe corresponding cross-section. 9. Machine according to claim 2, characterized in that each shape has an increasing cross-section, and only in Area of the largest cross-section that has the profile corresponding to the end cross-section of the pipe to be profiled, whereby means are provided which force the outlet pipe to travel over the area of the largest cross section will. 10 · Machine according to claim 2, characterized in that the Means which give the individual shapes the different sections have a cam common to all shapes and rams for controlling each shape, while the means used to unload the profiled tube is a conveyor belt include; wherein the frame the clock-shaped rotary movement a pneumatically operated mechanism is transmitted. 11. Machine according to claim 2, characterized by additional Means (15, 16, 17J Fig. 11), which in the unloading of the profiled pipe preceding sections the application of an adhesive layer and the introduction of the soil or the Aim the cover on the end of the profiled tube. - 12 - 6098U / 0774 12. Machine according to claim 11, characterized in that the additional means used to apply the glue inside and at the end of the pipe is a gun (15) with an extruder head having one or more nozzles (16) and a mechanism (17) which rotates the nozzles accordingly 360 divided by the. Number of nozzles granted include " 13. Machine according to claim 11, characterized by a magazine (18) for bases, or for covers, and a plunger (20) which is attached to the end of the tube which is covered with adhesive Bottom, or a lid provided with adhesive on the inside, before the pipe is unloaded. R η q R h hl π 7 7 ii Blank page