JPH02109831A - Bender of packaging pack - Google Patents

Abstract

PURPOSE: To perform the folding of a small bag or a small basket by the continuous operation with high output by supporting a corner folding tool for a folding work region, a pressure folding tool and an axial folding tool on a torsional head movably in the axial direction, and slidably mounting the same. CONSTITUTION: A corner folding tool 3 and a pressure folding tool 4 are supported in parallel with a shaft 2 on the same pitch circle on each folding work place. An axial folding tool 5 is arranged on a circle of large pitch between the corner folding tool 3 and a pressure folding tool 4. The corner folding tool 3 is arranged in a housing 1 movably by a hollow shaft 6, and its functional element 7 is oscillatably supported and interlocked with a rack 8. A packing material is vertically upwardly folded by the corner folding tool 3. On this occasion, the corner folding tool 3 is axially moved, and the functional element 7 is oscillated through the rack 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] The invention consists of a twisting head arranged next to a wrapping wheel, which twisting head rotates at the same speed as the wrapping wheel and is provided with folding elements. This invention relates to a packaging folding device for folding a package into the shape of a small bag or basket.

[Conventional technology]

A system is already known in which a twisting head is arranged next to the wrapping ring, which rotates at the same circumferential speed and is equipped with a twisting grab for twisting the ends of the wrapping packet; a system of this kind is disclosed in patent no. It is shown in Japanese Patent No. 139559. According to this method, the end portion of the package wrapped in a tubular shape around the object to be packaged can be grasped with a twisting grab and closed in the twisting process. However, this device does not allow the packaging to be folded into a pouch or basket.

A method of folding into the shape of a pouch or basket is described in German Patent Application No. 2254659. In that case, the confectionery to be packaged is fed via a feeding table, taken up by a rotating shaft and covered with a piece of packaging material. Thereafter, the confectionery is picked up by the grab arm of another rotating wheel. During the conveyance of the confectionery present in the grab arm of the six rotating wheels, a guide plate on one side, upper and lower guide plates, and a packaging flapper are placed on the packaging material. Fixedly arranged for deforming the pieces. In this way,
Before the confectionery is transferred to another rotating shaft, the confectionery is folded into the shape of a pouch or basket in order to give it a known twisting process on the other side, such as a guide plate, a packaging flapper, etc. Fixed folding mechanisms such as the one described above have the disadvantage of not being able to undergo folding operations at high power.

The fixed folding mechanism folds the packaging material in relation to each other in various h-directions, the short folding distance being such that at high speeds the impact action of the folding mechanism may break the packaging material, thus causing various h-directions. The quality and characteristics significantly limit the adoption of packaging materials.

German Democratic Republic Patent No. 125,664 also describes a method for improving the folding of wrapping paper in a bonbon packaging machine for folding into the shape of a pouch or basket. There, the aim is to design the folding mechanism in such a way that lateral stresses on the packaging during its exit from the plane of the supply table do not adversely affect the folding process.

The purpose is to symmetrically bypass the piston on both sides in the vertical plane of the radius of the feed table on the side of the folded edge of the piston, so that a fork-like packaging holding part which can be raised and lowered and which is driven independently of the piston is installed. It is arranged so that it can be extended to the height of the folded edge.

This known method can only be used for non-continuously operating bonbon packaging machines, and therefore cannot be used for continuous folding into pouches or baskets with high cutting edges.

[Problem to be solved by the invention]

The object of the invention is to enable the use of many types of packaging materials, which can be folded into the form of pouches or baskets for the purpose of high-output, high-quality packaging of small items.

The object of the invention is to arrange the folding elements in the twisting grab in such a way that very long folding strokes are obtained and the folding elements do not act impactively on the packaging material.

According to the invention, the twisting head has the same number of folding points as the sets of holding elements arranged on the wrapping ring, and the corner folding tool of the folding points, The pressing can be achieved in that the folding tool and the axial folding tool are axially movably supported on the twisting head, and the functional elements of the corner folding tool and the pressing can be achieved in that the functional elements of the folding tool are swingably arranged.

The corner folding tool and the pressing tool are arranged on the same pitch circle, and the axial folding tool is arranged on the pitch circle where the axial folding smell is larger. The functional element of the axial folding tool is fork-shaped and has a curved working surface. The functional element of the square folding member is designed as a folding plate with two grooves, and the functional element of the folding tool is designed as a folding plate.

〔Example〕

The present invention will be described in detail below with reference to embodiments shown in the drawings.

The twisting head according to the invention is arranged concentrically with respect to a wrapping wheel (not shown) and consists of a housing 1 which is the main part rigidly connected to a shaft 2 . At each folding station parallel to the axis 2, a corner folding tool 3 and a corner folding tool 4 are supported on the same pinch circle. An axial folding tool 5 is arranged on a large pitch circle between the corner folding 3 and the pressing folding tool 4. The corner folding member 3 is arranged movably in the housing l by means of a hollow shaft 6, its functional element 7 being swingably supported and operatively connected to a rack 8. A lever 9 with a cam roller is attached to the hollow shaft 6 within the housing l. This lever 9 is in contact with the track of the cam 11 at a cam roller lO. A lever 12 with a cam roller is attached to the rack 8.

The cam roller 13 is in contact with the orbit of the cam 14. The pressing mechanism 4 is slidably supported in the housing 1 by a hollow shaft 15, and its functional element 16 is swingably arranged and operatively connected to a rack 17. A lever 18 with a cam roller is attached to the hollow shaft 15. The lever 1B is in contact with the track of the cam 20 by a cam roller 19. A lever 21 with a cam roller is attached to the lever 17. The cam roller 22 is in contact with the orbit of the cam 23. The axial folding tool 5 is slidably supported in a housing l.A functional element 25 is attached to an axle 24 in the operating direction, and a lever 26 with a cam roller is attached to the axle 24 in the housing l. The cam roller 27 is in contact with the orbit of the cam 28. The cams 11, 14° 20, 23, 28 are mounted on flanges 29 which are rigidly connected to the machine frame.

This device works as follows.

The bonbons to be wrapped are received in a known manner from a holding element of a wrapping wheel (not shown), which is arranged concentrically on the shaft 2 on the working side of the twisting head according to the invention.
Remove the receiver along with the 0-shaped packaging member at t place U, and place 230
After being rotated, the receiver is transferred again at transfer point A. The next bending step is performed within this rotation angle range. The receiver is immediately after being removed, and the pressing is performed by the functional element 1 of the folding tool 4.
6 presses the bonbon against the contact support surface of the holding element of the wrapping ring. This is done by axially displacing the folding tool 4 towards the wrapping wheel. At that time, the cam roller 19
runs on the track of the cam 20, the function element i16 is swung, and the cam roller 22 runs on the track of the cam 23, thereby moving the rank 17 in the axial direction. Immediately thereafter, the holding elements of the wrapping ring are opened and the wrapping material is released. The corner folding tool 3 now folds the packaging material vertically upwards. The corner folding tool 3 then carries out an axial movement and the functional element 7 carries out a swinging movement via the rack 8, this movement being
This is achieved by the cam roller 10 running on the trajectory of the cam 11 and the cam roller 13 running on the trajectory of the cam 14. In the Vt< process, the cam roller 27
Due to the axial movement of the axial folding tool 5, which is carried out by running on a track of will be moved. The axial folder 5 is then returned to its starting position and the holding elements of the packaging ring are closed, thereby securing the folded part of the inserted packaging material. After the holding elements have been closed, the pressing is performed so that the functional element 6 of the folding tool 4 first -
The step is returned to its starting position and another axial movement brings the still vertical wrapping end into contact with the bonbon. The sides of the packaging still standing vertically between the bonbon and the holding element are folded one after the other in a known manner by means of folding tools arranged in the area of the wrapping hoop;
The opposite, still open end is twisted in a known manner, thereby completing the pouch-shaped fold.

〔Effect of the invention〕

In accordance with the present invention, by arranging a corner folding tool, a pressing tool and an axial folding tool as the bending work area in the twisting head, the movement process and the formation of its functional elements, folding of small bags or baskets can be carried out in continuous operation. Can be done at high output. The corner folding, pressing and folding and axial folding tools as multiple rotary folding points of the twisting head rotating at the same circumferential speed as the wrapping head provide many opportunities for individual folding. This allows the functional elements of the folding tool to act very carefully on the packaging material and the objects to be wrapped, with reduced wear on the folding tool and noise in the folding area.

[Brief explanation of drawings]

Figure 1 is a front view of the twisting head, Figure 2 is a cross-sectional view of the axial fold along line A-A in Figure 1, and Figure 3 is a corner folding tool along line B-B in Figure 1. A cross-sectional view of
FIG. 4 is a sectional view of the folding tool taken along line CC in FIG. l Housing 2 shafts 3 Corner folding 4 Pressing is folding 5 Axial folding tool 7 Functional element 16 Functional element 25 Functional element application substitute Saho Fig, 2

Claims (1)

[Claims] 1. Consists of a twisting head disposed beside the wrapping wheel;
a set of holding elements in which the twisting head is arranged on the wrapping ring in a packaging folding device for folding into the shape of a pouch or basket, the twisting head rotating at the same speed as the wrapping ring and comprising a folding element; The corner folding tool (3), pressing folding tool (4) and axial folding tool (5) of the bending sections are supported movably in the axial direction by the twisting head. A device for folding packages, characterized in that a functional element (7) of a tool (3) and a functional element (16) of a pressing and folding tool (4) are arranged so as to be swingable. 2. The corner folding tool (3) and the pressing folding tool (4) are arranged on the same pitch circle, and the axial folding tool (5) is arranged on a larger pitch circle. equipment. 3. The functional element (25) of the axial folding tool (5) is fork-shaped and has a curved working surface, and the corner folding tool (3)
), characterized in that the functional element (7) of the press-folder (4) is designed as a folding plate with two grooves, and the active element (16) of the press-folding device (4) is designed as a folding plate.
or the device described in 2.