JPH0752921A - Device to fold package in small bag or basket - Google Patents

Abstract

PURPOSE: To develop a device for folding a package in a small bag or a small basket which is capable of guaranteeing the sure functions, even in a high-speed range with very small technical cost. CONSTITUTION: An outside contour of a holder 2 of a grab head rotor 1 forms a forming die to fold a packaging sheet 4, a folding process is divided into at least one folding station annexed to the grab head rotor 1 and at least one folding station annexed to a packaging head rotor 10, and a means for guiding the holder 2 and a holding jaw 11 in a relatively stoppage condition in the radial direction and in the tangential direction is provided for the folding process and for the delivery. The folding device is used for a high-speed packaging machine to package hard caramel and bonbons.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for folding a package in the form of a pouch or a basket. The device consists of a continuous rotating grab head rotor and a continuous rotating packaging head rotor, each equipped with a set of holding elements. A folding station is arranged which is fixed in position in the housing and through which the processed articles to be packaged pass and in turn the necessary folds are created. Furthermore, means are provided for delivering the partially folded package to the packaging head rotor, to which the device for twist-wrapping is attached.

[0002]

BACKGROUND OF THE INVENTION A popular device for folding pouch-like or basket-like folds starts from individual discs (discs that separate into pieces) that are used in packaging machines and are controlled in steps. There is. In that case, the bonbons or confectionery to be packed are guided into the storage pockets arranged on the circumference of the individualizing disc. A push-up rod engaging a storage pocket carries the bonbon together with the packaging sheet into the so-called turret head of the packaging machine. Side folding is performed during the push-up process. The accompanying folding device performs side folding. The packaging packet thus partially made is then gripped by the retaining jaws of the turret head. The slider forms a bottom fold, and after retreating, the inner fold is formed. The finishing folding is completed when the turret head is continuously switched. On the opposite side, a pipe is formed that completely surrounds the bonbon and this pipe is twisted at the subsequent station.

Acceleration and air resistance cause instability in the packaging sheet. Therefore, German Democratic Republic Patent No. 12
Japanese Patent No. 5664 proposes to employ a fork-shaped support component for supporting a packaging sheet.

In the case of this system, the output of the packaging machine is determined based on the dynamic load of the mechanism, based on the dynamic load of the mechanism, as well as the intermittently actuated push-up bar having the long stroke necessary for the folding sequence and the end face and bottom folds. It has the drawback of limiting.

Published German patent application No. 2254
In JP 659, there is known an automatic twist wrapping machine for wrapping confectionery and bonbons that can provide a large output. In that case, the confectionery pieces and the bonbons are likewise led to the individualizing discs. Removal from the singulation disc is performed here by a rotating wheel gripper that removes the confectionery from the surrounding storage pockets.
At the same time, the wrapping material pieces introduced by the other rotating wheels are covered. The confectionery piece passes directly past the fixed guide plate together with the packaging piece and a part of the packaging piece is applied around the confectionery piece. The packaging tongue (flap) stabilizes this state, and the other guide plates perform side folding. The gripper of the following rotating wheel now grabs the confectionery piece on the side covered by the packaging material. In the course of the continuation, the projecting flanks are folded by the fixed tongues and likewise stationary guide plates. In the continuation process, the twist wrap closes both sides and thus completes the packaging.

The drawback of this method is that the fixed folding mechanism such as the guide plate, the packaging tongue, etc. is not suitable for the folding packaging in the high output range. Since the folding distance is too short and the folding is done in different directions, the mechanical action on the packaging material at high packaging machine speed is
It is large enough to cause a malfunction until the packaging material is damaged.

In order to eliminate this drawback, it is known from DE-A-3924552 to start from a continuously operating packaging machine in the high output range. The wrapping machine has a twisting head arranged by a wrapping wheel, rotating at the same speed and equipped with folding elements. The twisting head has as many folding stations as there are retaining element sets arranged on the wrapping wheel. Each folding station comprises three folding elements which in turn fold. A twist wrap is performed on both sides of the bonbon, thus completing the fold in one revolution.

[0008]

This method has the disadvantage that a high technical outlay is required for its technical implementation. A number of folding stations are arranged on the twisting head, and the course of movement of the folding mechanism of each folding station must be coordinated with one another by means of a corresponding transmission.

The corresponding folds act in sequence. This reduces the load on the packaging material, but especially for elastic materials,
A fold that has already been made may bounce back again before the next fold is made. This effect is exacerbated by the fairly widespread round shape of the articles to be packaged, which makes it difficult to form sharp, permanent folds.

An object of the present invention is to develop a device for folding a packaging packet into a pouch-like or basket-like shape, which ensures a reliable function even in a high speed range with very little technical cost. In that case, the already made partial folds are reliably maintained by the superposition of subsequent folds,
This is intended to eliminate the effects of different shapes of articles to be packaged and different packaging material qualities.

[0011]

SUMMARY OF THE INVENTION According to the invention, the object is to provide a continuous rotation grab head rotor and a continuous rotation packaging head rotor, each of which is equipped with a set of holding elements, fixedly arranged in a housing. It is provided with a folding station, through which the work pieces to be processed pass by in order to make the necessary folds, and a device for delivering the partially folded package to the packaging head rotor, which is provided with a device for twist-wrapping. In a device for folding a packaging packet in the form of a pouch or a basket, the outer contour of the holding scissors of the glove head rotor forms a forming die for folding the packaging sheet, and the folding process is performed by the glove head rotor. At least one folding station attached to the packaging head rotor and at least one folding station attached to the packaging head rotor By means of a folding station and means for guiding the holding scissors and the holding jaws in a relatively stationary radial and tangential direction for the folding process and for the transfer. To be achieved.

[0012]

The present invention will be described in detail with reference to the embodiments shown in the drawings. Although a packaging machine for bonbons has been chosen as an example, the invention is not so limited and includes all machines for packaging small pieces.

As is apparent from FIG. 1, the grab head rotor 1 and the packaging head rotor 10 are arranged side by side. These rotors 1 and 10 are continuously rotated in directions opposite to each other as indicated by arrows in the figure. A plurality of holding scissors 2 and holding jaws 11 arranged in pairs for holding a bonbon 20 are present on both rotors 1 and 10 evenly distributed around the circumference. . A processing station with a folding mechanism, a receiving station, a delivering station and an ejecting station are arranged along the movement trajectory of the holding scissors 2 and the holding jaws 11.

In that case, an actuating mechanism, such as a clamp 6, hinged to the rotor head and moved together,
Actuating mechanism, such as bottom fold 13 and inner fold 14, fixedly hinged to the machine frame and guided together in parallel to the holding scissors along a connecting cam hinged to the machine frame. There are actuating mechanisms such as, for example, side folds 7 and end folds 9.

The holding scissors 2 and the holding jaws 11 also move relative to the continuously rotating rotors 1 and 10. For this purpose, the holding scissors 2 or the holding jaws 11 are guided along plate cams 16, 18. Further, since the foot 3 follows a circular orbit and the foot 12 follows the orbit of the outer cycloid 17, the holding scissors 2 and the holding jaws 11 and the holding jaws 2 and the holding jaws 2 during the continuous rotation of the rotors 1 and 10. 1
Ancillary tangential and radial motion profiles with stop positions with respect to a relative position of 1 occur. On the one hand, this stop position is used to extend the technical working time of the holding shears 2 or the holding jaws 11 in the processing and transfer stations, and on the other hand the relative movement is used to adapt the movement of the folding tool. To be done.

The above-mentioned outer cycloid 17 is generated when a gear 23, on which the foot 12 of the holding jaw 11 is eccentrically supported, rolls around a fixed parent gear 22.

The bonbon 2 in the grab head rotor 1
0 is caught by the holding scissors 2. As can be seen from FIG. 2, the outer contour of the holding scissors 2 is shaped such that it is simultaneously used as a folding mold and gives a correct and straight folding edge regardless of the shape of the bonbon. Angular projections 21 are arranged as folding edges on the open holding shears 2 '. A wrapping sheet 4 is placed between the rotary table 5 and the rotary clamp 6, respectively, on the bonbon 20 already held by the holding scissors 2. The support edge 19 follows and stabilizes the packaging sheet 4 in this position.

The circulation orbit of the holding scissors 2 having the bonbon 20 and the packaging sheet 4 contacts the front folding tool 7, and at that time,
The packaging sheet 4 is folded over the outer contour, which acts as a mold for the holding scissors 2 (see FIG. 3).

Then, the end face is double-folded around the fixed edge of the holding scissors 2 by the fork-shaped end face folding tool 9 (folding portion c) (see FIG. 4). The pedestal 5 serves to support the inside surface of the packaging sheet 4 to form a fold edge.

The side folding device 8 pushes down the free end of the packaging sheet 4 and clamps it on the holding scissors 2. Then, the end surface folding tool 9 comes out of the track, and the position and folding of the packaging sheet 4 do not change or bounce back,
Clamp 6 is released.

The holding scissors 2 swing forward with respect to the glove head rotor 1 by the action of the plate cam 16, and the packaging sheet 4 is released from the table 5. At the same time, the holding jaw 11 swings forward with respect to the packaging head rotor 10 by the track of the plate cam 18 and the foot 12, so that the holding scissors 2 and the holding jaw 11 relatively move in the tangential direction and the radial direction. The side folds 8 are released from the holding scissors 2, freeing the packaging sheet 4. In that case, the bonbon 20 is received by the holding jaw 11 with the processed packaging sheet 4 (refer FIG. 5).

In the subsequent folding station (see FIG. 6), the end face is folded to the lower side of the bottom by the rotating bottom folding tool 13 (folding part d), and this is the side part (folding part e) folded by the inner folding tool 14. Hold until covered with.

FIG. 7 shows three states of the bottom folding tool 13. In the state L1, the wide side of the bottom folding tool 13 is involved in bottom folding. Folding is performed in the state L2, and the state L3 shows a state in which the folding portion is fixed on the narrow side of the bottom folding tool 13 and at the same time, a position occupied by the inner folding tool 14 for folding the side surface portion.

As the packaging head rotor 10 continues to rotate, the finish folds are formed in a known manner by reverse running on the stationary fold ring 15.

During the folding sequence described above, a packaging tube (cylinder) is formed on the opposite side, which packaging tube is closed at the next twisting station. At this station, the holding jaws are the above-mentioned transmission means, the legs 12 of the holding jaws 11,
The track of the outer cycloid 17 and the plate cam 18 cooperate to hold the outer cycloid 17 at the stop position.

The practice of finish folding and twist wrapping is generally known and is not illustrated and described here.

[0027]

An advantage of the invention is that an already formed fold is covered such that it is held by a subsequent fold. That is, reliable folding is possible even with an elastic material. The fact that the folding process is distributed over a plurality of stations and the circumferential speeds of the holding element sets are synchronized during folding, which results in good movement with little load on the transmission. Since the folding takes place via the holding jaws, which act as forming moulds, the shape error of the articles to be packaged is not a problem and the quality of the packaging material is not significantly affected.

Further, there is an advantage that the switching to the twist-wrapping can be easily considered as compared with the prior art. In that case, the folding mechanism for folding in a pouch-like manner is removed, which drives the existing twisting head.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a grab head rotor and a packaging head rotor each having a folding element.

FIG. 2 is a perspective view showing various states of a folding mechanism.

FIG. 3 is a perspective view showing various states of the folding mechanism.

FIG. 4 is a perspective view showing various states of the folding mechanism.

FIG. 5 is a perspective view showing various states of the folding mechanism.

FIG. 6 is a perspective view showing various states of the folding mechanism.

FIG. 7 is an explanatory view of a bottom folding tool.

[Explanation of symbols]

 1 Grab Head Rotor 2 Holding Scissors 4 Packaging Sheet 10 Packaging Head Rotor 11 Holding Jaw 12 Feet 17 Outer Cycloid 18 Plate Cam

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Heinz, Rauerbach, Dresden, Federal Republic of Germany, Neindorfer, Strasse, 38 (72) Inventor Wilfried, Zypt, Dresden, Federal Republic of Germany, Dorf Heiner, Strasse, 22

Claims (5)

[Claims] 1. A continuously rotating grab head rotor and a continuously rotating packaging head rotor, each equipped with a set of holding elements.
A folding station in which the workpieces to be packaged are fixedly placed in a housing and in turn the necessary folds are created, and means for delivering partially folded packages to a packaging head rotor; A device for folding a packaging packet in the form of a pouch or a basket, which comprises a device provided with a device for twist-wrapping, wherein the outer contour of the holding scissors (2) of the grab head rotor (1) is a packaging sheet. At least one folding station forming a mold for folding (4), the folding process being attached to the grab head rotor (1), and at least one folding station attached to the packaging head rotor (10); The holding scissors (2) and the holding jaws (2) for the folding process and for handing over. A device for folding a packaging packet into a pouch-like or basket-like shape, characterized in that it is provided with means for guiding 11) in a relatively stopped state in the radial direction and the tangential direction. 2. A grab head rotor (1) is provided with a folding mechanism for folding an end surface folding portion (a) and both side surface folding portions (b), and a bottom folding portion (d) and a finish folding portion. An apparatus for folding a packaging packet into a pouch-shaped or basket-shaped configuration according to claim 1, characterized in that a folding mechanism is attached to the packaging head rotor (10). 3. The package wrap according to claim 1 or 2, wherein the end face folding portion (a) is generated by a fork-shaped end face folding tool (9) surrounding the molding die. A folding device. 4. Holding scissors (2) and holding jaws (1).
1) is guided along the plate cams (16; 18), and the legs (3) of the holding scissors (2) are moved along the circular track on the holding jaws (1).
2. The device for folding a packaging packet according to claim 1, wherein the foot (12) of (1) is guided on the orbit of the outer cycloid (17). 5. An outer cycloid (17) is a master gear (23) whose position is fixed in such a manner that a gear (23) on which the legs (3; 12) of a holding scissor (2) or a holding jaw (11) are eccentrically supported. 22) A device for folding a packaging packet according to any one of claims 1 to 4 into a pouch-like or basket-like shape, which is produced by rolling on 22).