NL8803127A - METHOD AND APPARATUS FOR FORMING A STRAIGHT WRAP MADE FROM A DOUGH MASS TO A CLOSED RING SHAPE. - Google Patents

Description

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Title: Method and device for deforming a straight wrapper obtained from a dough mass into a closed ring shape.

The invention relates to a method and an apparatus for deforming a straight wrapper obtained from a dough mass into a closed ring shape.

A necessary bending device must serve as 5 parts for connection to existing installations of all types, must make available any straight-wound dough pieces.

The invention is based on the problem that this dough wrapper automatically deforms into a closed ring as a finished product in several improved working phases. On the one hand, the shape resistance by measures against the spring-back constant of the raw dough material, e.g. improved by stretching the cones in the bending device in the region of their outer circumference - in an emergency by means of an elastic conveyor belt - and on the other hand simplifying the finished closing and pressing process.

According to the invention the solution of this problem consists in that the deformation automatically takes place by means of a bending device in four successive working phases, which are 1. from bending, 2. from pre-closing, 3. from ready-to-close, and 25. 4. consists of pressing.

The advantage of the invention is to be seen in that with croissants, annular dough pieces can be automatically prepared for baking, so that the manual work required so far is eliminated.

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To illustrate the invention in details, an exemplary embodiment shown in the drawing is described in more detail below. In the drawing: fig. 1 and fig. 2 each show a cross-section through the bending device according to the invention seen in the band direction; fig. 3 shows a view of the bending device according to the invention from above; Fig. 4 shows a closing body or punch (14) for applying the working phase 4, and Fig. 5 shows a view of the bending device according to the invention from the side.

Fig. 1-5 show according to working phase 1 the device according to the invention, starting from the left, with a straight dough piece a taking over by a cone and a conveyor belt 10 running to the right, which runs in a fixed scale. The fixed shell (not shown) can be elastically deformed by machine control, to give a straight-wound dough piece 20a a substantially horn-like curvature.

In order to facilitate the deformation of the straight wrapper into a closed ring, it is given a pre-bend to a certain extent, because it continues under the roller A and thus obtains a notch formed in the bending center. Only then the dough pieces (wraps) thus pre-bent are pre-bent in a circular manner, so far that the two ends overlap each other laterally (working phase 2).

In working phase 3, the overlapping ends are placed side by side by pressing rollers 12 arranged in the upper region and pressed into the desired shape.

At working stage 4, the pressing inside the conveyor belt 10 is now carried out. This is necessary because the unbaked dough has a certain rebound constant 35 which can cause the ring thus closed to open. To avoid this, the 88 03 127. "h

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The aforementioned pre-processing stations, bent upright dough pieces still standing upright, with the aid of the swings 14 driven by eccentrics 13.

The eccentric movement takes place in phase with the belt transport, so that it is ensured that with every movement of the swings 14 the ends are always hit.

Despite the pressing of the two overlapping ends of the dough piece curved into a ring 10, the rebounding constant of the unbaked dough is in many cases still so strong that when subsequently depositing the dough pieces on another processing belt or baking tray, the opening of the ring is created.

To prevent this, at the beginning of the bending process, the conveyor belt is initially guided such that under the wrapper lying thereon a loop-shaped protrusion of the conveyor belt is formed downwards, which was previously referred to as stretching vessel b.

This stretching vessel b allows an additional expansion of the outer circumference of the dough wrapper into a ring shape during the bending process. The stretching vessel b is thereby pulled tightly against the dough wrapper and the upper circumference of the dough wrapper adhering to the other conveyor belt 25 can then be stretched so to speak, so that the spring-back constant is largely lifted (fig. 2).

8809127.

Claims (5)

Method for deforming a straight wrapper obtained from a dough mass into a closed ring shape, characterized in that the deformation takes place automatically by means of a bending device in four successive working phases, which are: 1. from bending, 2. consists of the pre-closing, 3. the ready-closing, and 4. the pressing 10. Method and device for applying working phase 1, characterized by a bending device, with which each wrapper (a) on the conveyor belt (10) is deformed circularly by means of a machine-elastic deformable shell 15 until the wrapping ends overlap each other, during deforming the wrapper (a) is provided a stretching vessel (b) serving to stretch its outer circumference (Fig. 1). Method and device according to application of working phase 2, according to claims 1 and 2, characterized in that the overlapping wrapping ends are superimposed on each other by means of pressure rollers (12) in the desired shape (fig. 2). Method and device for applying working phases 3 and 4 according to claims 1-3, characterized in that closing bodies (14) driven by eccentrics (13) are pressed within the conveyor belt (10) for pressing the adjacent ones horizontal wrapping ends are present and the now-finished croissants are transferred by 30 swings (15) in the plane of the conveyor belt (10) and then deposited with the aid of a conveyor belt (16) (fig. 5). 8803 127. "