EP0044395A1 - Apparatus for the production of filled packages in the shape of a prism - Google Patents

Abstract

Continuously operating packaging line with a main mechanism, which consists of four endless belts (1,2,3,4), which are opposite each other in pairs (1,3; 2,4) and whose movement is synchronized. The endless belts (1, 2, 3, 4) are provided with shaping elements (6, 7) arranged one behind the other, with which sections are formed from a hollow prismatic tube, which have straight axes and a rectangular cross section. The tube slides noiselessly and continuously through a straight section (5) of the endless belts at a uniform, straight line speed. Additional blades (9) are provided between the shaped elements (7) on the endless belts (1 and 3) and pliers jaws (8) are provided between the shaped elements (6) on the endless belts (2 and 4). These processing elements (8, 9) lie opposite each other in pairs. The toothed jaws (8) provided with a cutting tool have the task of closing the containers and the additional blades (8) have the task of shaping the lateral ears of the containers created by the toothed jaws (9). At the same time, the images to be applied to the outside of the container are centered.

Description

The invention relates to an automatic, continuously operating line from packaging machines for the production of filled and closed containers from a flat band wound on a spool.

Automatic packaging machines are known which produce square containers from a flat band which is wound on spools. These containers are formed by devices that work with complex, alternating movements.

The inevitable mechanical errors which are caused by the considerable dynamic loads and which arise from the acceleration of the heavy parts during the changing movement limit the performance of the known packaging machines, so that they can only be operated at low speeds.

Furthermore, the known packaging machines working with changing movements have the disadvantage of high operating and maintenance costs. These costs are caused by the large wear of the articulated connections and the heavy parts during the alternating movement, which the parts and joints are exposed to during the considerable accelerations.

The accelerations typical of the changing movement also cause within the manufacturing clear an unbearable noise. Packaging machines with alternating movements also have the disadvantage that maintenance work often has to be carried out out of sequence and the associated shutdown of the entire automatic packaging line causes considerable production losses.

Furthermore, continuously operating packaging lines are known with which pyramid-shaped containers can be produced. However, the consumer trend is towards rectangular prismatic containers which are easy to handle and pack tightly.

Today, this trend is increasing and the proportion of rectangular prismatic packs is increasing for all types of consumer goods, such as preserved milk, cream, jam, beverages, fruit juice, cooking oil and other oils, fats, creams , doughy, liquid or semi-liquid products and other products that can be automatically packed in airtight and unsterilized containers.

The invention has for its object to provide an automatic high-performance packaging line with a high level of operational reliability, easier and cheaper maintenance, with low noise pollution, low operating costs, small dimensions, with a high degree of adaptation to both the wound material and the product to be packaged, one system, in which a Sterilisierun can be adjusted with the exact weight of the product and packaged ^g sanlage preceded by a collecting and packaging line for the filled and sealed prismatic container can be adjusted.

This object is achieved according to the invention in that a main mechanism is provided with four endless conveyor belts lying opposite one another in pairs, the conveyor belts running synchronously and being provided with shaping devices which consist of elements which bend at right angles and are arranged in pairs opposite to one another so that they have inner sections of hollow prismatic tubes, which have a straight axis and a rectangular cross-section, the shaping devices operating silently and continuously with constant linear movement.

Alternating with the four angled elements, in a further development of the invention, the four endless, paired and synchronous conveyor belts are alternately provided with two pairs of working devices, one pair consisting of opposing jaws for closing the containers and the jaws being provided with a cutting tool, and that another pair of additional opposed blades is used to shape the lateral ears of the prismatic container inside the hollow portions of the continuously conveyed rectangular tube and at the same time to align the image to be applied to the outside of the container, the container already being filled with the product to be packaged .

The invention thus provides a continuously operating high-performance packaging line for rectangular prismatic containers, which operates silently, causes low operating and maintenance costs and has high operational reliability, accuracy and uniformity.

The continuously operating packaging line according to the invention has great advantages over the known packaging machines and consists of a series of silent high-speed packaging machines.

• Fig. 1 in perspektivischerDarstellung den Hauptmechanismus der Verpackungsstraße;
• Fig. 2 eine abgewandelte Form des Hauptmechanismus;
• Fig. 3 in perspektivischer Darstellung den Hauptmechanismus mit den Formungs- und Bearbeitungselementen;
• Fig. 4 in perspektivischer Ansicht die Formungs- und Bearbeitungselemente;
• Fig. 5 bis Fig. 8 verschiedene Fertigungsstufen eines prismatischen Behälters und
• Fig. 9 in schematischer Darstellung die Arbeitsfolge.

The invention is explained below using an exemplary embodiment with reference to the figures. Show it

• Figure 1 is a perspective view of the main mechanism of the packaging line;
• 2 shows a modified form of the main mechanism;
• Figure 3 is a perspective view of the main mechanism with the forming and processing elements.
• Figure 4 is a perspective view of the forming and processing elements.
• 5 to 8 different stages of manufacture of a prismatic container and
• Fig. 9 in a schematic representation of the work sequence.

Fig. 1 shows the main mechanism of a continuously operating packaging line, which consists of four conveyor belts 1, 2, 3 and 4. The conveyor belts are endless and face each other in pairs. The belts stretched over deflection rollers run with a uniform, uniform movement in the direction of the arrows. The movement is effected by known drive transmission means. The tapes are like this arranged that the opposite Ab-. cuts of the strips produce straight-line paths 5.

Fig. 2 shows a modified arrangement of the conveyor belts 1; 2, 3; 4; whose outward-facing run is in each case stretched over a roller which is not in the plane of the deflection rollers. These belts also have a uniform movement and have a rectilinear band section along the regions 5 'which run with invariable rectilinear movement.

From Fig. 3 it can be seen that the conveyor belts 2 and 3 are alternately provided with shaped elements 6 and jaws 8, while the conveyor belts 1 and 3 alternately have shaped elements 7 and additional blades 9.

Fig. 4 shows that the form elements 6 and 7, which are arranged in pairs opposite each other on the conveyor belts, form the inner rectilinear section; Likewise, the jaws 8 and the additional blades 9 are shown, each of which is attached to a pair of opposing conveyor belts. These pliers jaws 8 and additional blades 9 are arranged alternately with the shaped elements 6 and 7 on the conveyor belts. The jaws 8 have the task of closing and cutting the containers, while the additional blades attached to the tapes forming the narrow sides of the containers have the task of shaping the ears of the container which is being manufactured.

Fig. 5 shows that the jaws 8 close the tube 10 diagonally, the tube having previously been filled with the product to be packaged. Through these jaws 8 the tube 10 is drawn into the rectilinear area 5 of the conveyor belts. In this area, the opposite shaped elements 6 form the container to the prism on the opposite sides. The container is already closed by the jaws 8.

6 shows the upper area of the conveyor belts 3 and 4. At the beginning of the straight belt section 5, the mutually opposite shaped elements 6, which form the container from the tube 10, are still open so that the product to be packaged can be filled. At the bottom, the container has already been closed by the jaws 8. The pliers jaws 8 pull the pipe 10 or the container to be manufactured into the straight region 5 extending between the conveyor belts. The opposite conveyor belts 2 and 4 or 1 and 3 have a uniform speed, as indicated by the arrows, and comprise one rectilinear band section. The belt section 5 moves continuously and noiselessly at a uniform straight line constant speed.

Fig. 7 shows the opposing bands 1 and 3, in which, in addition to the opposing shaped elements 7, additional blades 9 are provided on each side. These blades 9 form lateral ears on the container to be manufactured and center the container at the same time so that images can be attached to the outside thereof. 7 shows the jaws 8 for closing the container.

FIG. 8 shows the conveyor belts 1 and 3 in the _t production stage, which corresponds to FIG. 6. The conveyor belts 1 and 3 are alternately provided with opposing shaped elements 7 and additional blades 9. The jaws 8 for closing the container engage laterally on the prismatic square container. These jaws 8 are attached to the pair of opposing bands 2 and 4, which is only indicated in FIG. 8.

Figure 9 is a schematic representation of the sequence of operations. In order to pack the container 10, it is filled and brought into shape within the rectilinear region 5 of the conveyor belts by the mutually opposing shaped elements 6 and 7 and closed by the pliers jaws 8 and the blades 9 forming the lateral ears.

As can be seen from Fig. 1, the main mechanism consists of four endless annular conveyor belts, two of which face each other in pairs. These belts are driven at a coordinated and even speed. The means for driving and for transmitting the driving force are known from the prior art.

Volume 1 is opposite volume 3 and volume 2 is opposite volume 4. All four belts run with coordinated smooth movement and their smooth speed can be very high. The belts run noiselessly, vibration-free, low wear and maintenance-free.

No drive and control devices are shown in the figures, since these are known in many ways. The conveyor belts can consist of chains, preferably from link chains, or from tapes made of textiles, synthetic materials or other materials.

The synchronization of the smooth movement of the four conveyor belts can be achieved by known mechanisms. For example, a series of evenly spaced holes or a series of reinforced pins can be provided which engage pins or holes provided on the drive and transfer rollers to ensure accurate synchronization of the even movement between the belts. Known belts can be used for transmission within the drive mechanism, as can other types of transmission mechanisms used in similar systems.

The main mechanism according to the invention can slide within suitable guides, which can be designed in different ways and can consist of different materials.

The strength, width and height of the ring-shaped endless belts are parameters which can be selected by the person skilled in the art in accordance with the dimensions of the packaging machines and which depend on the technical and functional conditions of the containers which are to be produced.

Protection is claimed for all packaging lines for prismatic, square containers, in which the main mechanism consists of four endless belts or silent chains, which face each other in pairs, the movement of which is synchronized, and which are successively with elements of Formungst facilities are provided. These shaping devices are arranged opposite one another on the bands so that they can produce the inner region of hollow prismatic tubes with straight axes and square cross-section. The belts work noiselessly and continuously with even, straight-line movement. Machining elements are provided alternately between the shaping elements, each consisting of a pair of opposing jaws and a pair of additional blades.

Claims (3)

1. Continuously operating line of packaging machines for square prismatic containers, characterized by a main mechanism of four silent chains or four endless belts (1, 2, 3, 4), which face each other in pairs (1,3; 2,4) and in their Sequence of movements are synchronized and which are provided one behind the other with shaped elements (6, 7), the elements lying opposite one another and forming the inner sections of a hollow prismatic tube with a straight axis and a square cross section, bands or chains (1, 2, 3, 4) run silently and continuously and have a smooth, linear and synchronized movement. 2. Packaging line according to claim 1, characterized in that the four endless belts (1, 2, 3, 4), which are provided one behind the other with the shaped elements (6, 7), are alternately provided with processing elements (8, 9), that the processing elements consist of pairs of opposing jaws (8) and pairs of additional blades (9), that the jaws (8) are provided with a cutting tool and that the blades (9) the lateral ears of the prismatic container to be manufactured shape within the hollow sections of the square sliding tube while simultaneously centering the images to be placed on the outside of the containers, the containers already being filled with the product to be packaged. 3. Packaging line according to claim 1 or 2, characterized in that prismatic containers, which are essentially square, rhombic or polygonal, are filled and closed.

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