The present teaching relates to a device for shaping several dough strips.
Dough strip shaping members for shaping dough loads into dough strips are widely known in the prior art. Systems known in the prior art consist primarily of feeding devices, pre-portioning devices which reduce the dough load for reshaping, and dough strip shaping units.
These dough strip shapers consist of at least two or more rolls with uniform or varying diameters. The rolls can also be produced with various surfaces or profiles. The length of the rolls primarily determines the width of the dough strips to be produced. For baked goods, these dough strips are of a single section or multiple lengthwise and width-wise sections, depending on the product. For lengthwise cutting, that is, for dividing the dough strip into several dough strip strands along its width, two methods are known in the art. In the first, the edges of the dough strip are cut, so that a major portion of the dough strip is accrued as waste, and in the second method the dough strip is cut without edge removal, which has the advantage that no edge waste accrues, and allows a saving of up to 15% of the mass that is to be processed.
In known devices and methods for cutting the dough strip with edge portion, the dough strip is produced in the dough strip shaper and, on leaving the dough strip shaper or at other points of the dough strip apparatus, the dough strip, according to the shape, is cut lengthwise into one or more strips or dough strip strands. This cutting is done using a disc cutter, punching die, water jet or the like. With systems of this type, to obtain uniform dough strip strands, a certain edge (10-15%) is cut off.
With known devices and methods for cutting the dough strip without edge cutting, the dough strip is produced in the dough strip shaper and, after leaving the dough strip shaper or at other points in the dough strip apparatus, is cut, wherein, in order to obtain uniform cross-sections, it is necessary to perform the cutting in the flow direction in a so-called calibration unit. To keep the cross-section uniform, extensive lateral guides are necessary which, to avoid dough adhering, must move along with the cutting device or must be provided with dividing means.
The disadvantage of systems known from the prior art, therefore, is that a large edge portion of the dough Is lost and/or an additional module or additional station in the dough strip apparatus becomes necessary, appreciably increasing the complexity, maintenance, cleaning, and costs.
It is thus one object of the present teaching to provide a device which makes possible lengthwise cutting of the dough strip that is economical and simple to operate, allows a high degree of precision in cutting the dough strip strands, and produces little or no wasted dough.
This object is fulfilled by the identifying features of the present disclosure, wherein it is foreseen that the device comprises a cutting roll, which in particular is power-operated and is arranged inside the dough chamber,
As a result of the inventive device, it is possible to execute the lengthwise cuts directly in the dough strip calibration unit or in the dough strip shaper, further making stations in the dough strip apparatus superfluous and reducing the length of the dough strip apparatus and the space required for it. No border section and thus no waste occurs, and thus profit is increased, and no foodstuffs are wasted.
In addition, the dough strip is fed through the cutting roll and the discharge roll as well as the lateral coverings during cutting on four sides, resulting in a uniform shape and width and thus increased precision of the dough strip strands.
Particularly advantageous embodiments of the present teaching are defined in greater detail by the features of the dependent claims.
Improved quality of cutting is achieved in that the discharge roll is configured as a counter-roll for the cutting roll, wherein the cutting blades of the cutting roll extend to the discharge roll, wherein the cutting blades in particular comprise a greater cutting depth than the shaped dough strip, so that the dough strip undergoes no reshaping between the discharge roll and the cutting roll.
The thickness of the dough strip can advantageously be adjusted if the device includes a pivot device, wherein a number of the shaping rolls, in particular all shaping rolls that, each seen on a common side of the dough chamber with respect to the thickness of the dough strip, are arranged on the same side, and/or the discharge rolls are connected with the pivot device and can be pivoted by means of the pivot device in the direction of the thickness of the dough strip, wherein the distance of the axes of the shaping rolls and/or of the discharge roll that are connected with the pivot device can be adjusted to the axes of at least one, in particular of all, of the respective other shaping rolls not connected with the pivot device and/or of the discharge rolls and in this way the thickness of the dough strip can be modified and/or pre-set.
The thickness of the dough strip can advantageously be adjusted if the device includes a pivot device, wherein a number of the shaping rolls, in particular all shaping rolls that, each seen on a common side of the dough chamber with respect to the thickness of the dough strip, are arranged on the same side, and/or the discharge rolls are connected with the pivot device and can be pivoted by means of the pivot device in the direction of the thickness of the dough strip, wherein the distance of the axes of the shaping rolls and/or of the discharge roll that are connected with the pivot device can be adjusted to the axes of at least one, in particular of all, of the respective other shaping roll not connected with the pivot device and/or of the discharge roll and in this way the thickness of the dough strip can be modified and/or pre-set.
It can advantageously be foreseen that the device, in particular the pivot element, comprises a pivot drive, particularly a hydraulic or pneumatic or electrical or electromechanical pivot drive, wherein the pivot drive is arranged and configured in such a way that a number of the shaping rolls, particularly all shaping rolls that, each seen on a common side of the dough chamber with respect to the thickness of the dough strip, are arranged on the same side and/or the discharge roll in the direction of the thickness of the dough strip can be powered oscillating about a neutral point, so that the distance of the axes of the shaping rolls and/or of the discharge roll, which can be moved in an oscillating manner by the pivot drive, from the axes of at least one, particularly of all, of the respective other shaping rolls not powerable by the pivot drive and/or from the axis of the discharge roll oscillating in the dough production process are displaced by a preset distance. Owing to the oscillation movement of the individual rolls, the dough quality is improved, and a homogeneous dough strip is produced, and thus the weight tolerance of the dough pieces is considerably reduced. In addition, the removal of dough from individual rolls is facilitated.
The distance of the shaping rolls from one another can alternatively be easily modified wherein the pivot element includes a control element, which is preferably lengthwise adjustable, in particular a hydraulic or pneumatic cylinder or electromechanical actuators, wherein the pivot drive comprises an eccentric mechanism, powered by a motor, wherein the placement element is connected at one end with the pivot lever and at the other end with the eccentric mechanism, wherein the pivot lever, with the motor powered, can be pivoted about the pivot axis by the eccentric mechanism and the control element, oscillating about a neutral point.
Owing to the displacement by means of the control element, a wider displacement distance is possible. The lateral wall or the cover of the device can be folded open and the shaping rolls can then easily be removed and cleaned in their unfolded state.
To allow simple removal and displacement of the cutting rolls, it can be foreseen that the cutting roll is arranged on a displacement device, wherein the distance and/or the pressure force of the cutting roll on the discharge roll can be adjusted by means of the displacement device, wherein the displacement device in particular is configured as a pivot arm that is displaceable about an axis, and on which the cutting roll is arranged.
The lateral edges of the cut dough strip strands are improved in that the discharge roll and/or the cutting roll comprise two lateral walls, each of which is arranged in the area at the end of the discharge roll and/or of the cutting roll, wherein the lateral walls are arranged and configured in such a way that, upon cutting the dough strip with the cutting roll, misshaping and deflection of the dough strip are prevented.
To prevent accumulation of the dough, it can be arranged that the device includes a number of scrapers, wherein the scrapers each are contiguous with the periphery of the shaping roll, wherein dough from the periphery of the respective shaping roll can be removed by means of the scrapers or wherein the device includes a number of milling devices and/or a number of spraying elements, wherein the milling devices and/or the spray elements are arranged in the device in such a way as to hinder accumulation or sticking of dough on the surfaces of the device that come in contact with the dough.
To prevent unwanted pressure forces and overflowing of the dough feeder device, it can be foreseen that the dough feeder device includes a filler funnel and at least one filler status sensor, wherein the filler status of the dough feeder device, in particular of the filler funnel, can be read by means of the filler status sensor.
It can advantageously be provided that the device includes a number of drives, wherein the shaping rolls and/or the discharge roll in each case can be powered together or separately, preferably at different rotation speeds, or that the device includes two drives, wherein the shaping rolls that, each seen on a common side of the dough chamber with respect to the thickness of the dough strip, are arranged on the same side, are each powered together with one of the two drives and, in particular, are connected with one another by gears.
A preferred configuration of the device is achieved if the shaping rolls and/or discharge roll and/or cutting roll have different profiles, wherein in particular the shaping rolls comprise a profiled periphery and the discharge roll and cutting roll are of smooth configuration.
For easy cleaning and exchange of the cutting roll and/or the blades, it can be foreseen that the cutting roll is arranged replaceably on the device.
To allow the thickness of the dough strip produced by the device to be adjusted automatically and/or depending on the dough feeder, it can be foreseen that the control element, particularly the hydraulic or pneumatic cylinder or the linear elements or the spindle drive, comprises a sensor system by which the current length of the control element can be determined, wherein in particular by means of the sensors the length of the control element and thus the thickness of the dough strip can be adjusted on the basis of previously determined or recorded weights of the dough pieces.
Additional advantages and configurations of the present teaching can be seen from the description and the attached drawings.
The present teaching is schematically depicted hereinafter by means of particularly advantageous embodiments, which are not, however, to be understood as restrictive, and shown schematically in the drawings and described by way of example with reference to said drawings.
The axes of the shaping rolls 2 and of the discharge roll 3 are arranged parallel to one another at a distance and, between the shaping rolls 2 and the discharge roll 3, configure a dough chamber 5 in which the dough 30 is worked and shaped as a dough strip. In addition, the device 10 includes two lateral coverings 15, which are contiguous with the front end of the shaping rolls 2 and the discharge roll 3 and laterally delimit the dough chamber 5 and reinforce it against the surroundings. The dough 30 is drawn into the dough chamber 5 through the mirror-inverted rotation of the first two shaping rolls 2, worked between the shaping rolls 2, possible dough pieces are made uniform and thus a continuous endless dough strip is produced.
The device 10 includes a cutting roll 6, which is arranged inside the dough chamber 5 at its outlet. The axis of the cutting roll 6 is arranged parallel to the axes of the shaping rolls 2 and the discharge roll 3. The cutting roll 6 comprises a number of disc-shaped cutting knives 7, which extend from the periphery of the cutting roll 6 in the direction of the discharge roll 3 all the way to its periphery. The dough strip is removed from the dough chamber 5 between the discharge roll and the cutting roll 6, wherein the dough strip is cut into a number of dough strip strands corresponding to the number of cutting blades 7. The width of the dough strip strands is determined by the distance between the cutting blades 7 and the distance of the cutting blades 7 situated close on the cutting roll 6 in the lengthwise direction of the front end of the cutting roll 6. The thickness of the dough strip is determined in the embodiment shown in
At the outlet of the dough chamber 5, the dough strips cut by the cutting roll 6 are transported by a dough delivery device 11, which is configured as a transport belt, out of the device 10 and into the dough strip appliance for further processing.
Depicted in
To prevent sticking of the dough 30, especially sticky dough with high water content, on the conveyor belts 41, transport rolls and rolls, so-called optional severing means can be employed. The severing means, flour, water, and the like, can for example be applied by a number of milling devices 23 and/or a number of spray elements 24. The milling devices 23 provide, on the belts and surfaces of the dough strips, a flour-film, which adheres to them and separates the dough strip or the dough from the parts of the device 10. Thereafter, scrapers 16 are arranged on the final dough strip shaping rolls in order to prevent possible adherences or to separate or scrape the dough more easily from them. If no separating flour is desired in certain doughs, for example, gluten-free doughs, then a separating film of water or oil can replace the flour-film by means of the spray elements 24.
As shown in
As depicted in
The device 10 comprises a pivot element 8, with which the four shaping rolls 2 that, each seen on a common side of the dough chamber with respect to the thickness of the dough strip, are arranged on the same side, can be pivoted, or displaced in the direction of the thickness of the dough strip. The distance of the axes of the shaping rolls 2, which are connected with the pivot element 8, is thereby displaced to the axes of all other shaping rolls 2 not connected with the pivot element 8. The thickness of the dough strip can be modified and preset thereby.
The pivot element 8 comprises two pivot levers 8 arranged parallel to one another in the direction of the width of the dough chamber 5. The four shaping rolls 2, that, each seen on a common side of the dough chamber with respect to the thickness of the dough strip, are arranged on the same side, are mounted on the pivot levers 81. Upon pivoting of the pivot lever 8, the distance of the axes of the shaping rolls 2, which are mounted in the pivot lever 81, from the respective other shaping rolls 2 not mounted in the pivot lever 81, arranged jointly on the other side of the dough chamber, can be displaced and/or adjusted.
The pivot element 8 further comprises a pivot drive 20, which includes an electric motor 12. Connected with the electric motor 12 is an eccentric mechanism 13, with a defined eccentricity 3 (
Optionally, as depicted in
Alternatively, the control element, rather than as hydraulic cylinder 14, can also be configured as a linear element, spindle gears, etc., so that the distance of the axes of the shaping rolls can be modified by displacing the linear element, spindle gear, etc.
The cutting roll 6 is arranged on a displacement device 25. The displacement device 25 is configured as a pivot arm 26 that can move about an axis, by which the distance and/or the pressure force of the cutting roll 6 on the discharge roll 3 can be adjusted.
Alternatively, it can be foreseen that the pivot drive 20 is configured pneumatically or electrically or electromechanically.
Optionally, the discharge roll 3 or the cutting roll 6 can comprise two lateral walls 31 (
In another option, the shaping rolls 2 and/or the discharge roll 3 and/or the cutting roll 6 can have a different profile, wherein in particular the shaping rolls 3 comprise a profiled periphery and the discharge roll 3 and the cutting roll 6 are of smooth configuration.
Optionally it can be foreseen that the control element, in particular the hydraulic or pneumatic cylinder 14 or the linear elements or the spindle gears, comprise a sensor system. The current length of the control element is recorded by means of the sensor system. By the sensor system, then, the length of the control element and thus the thickness of the dough strip can be set or modified on the basis of previously determined or entered weights of the dough pieces.
Number | Date | Country | Kind |
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A 50771/2018 | Sep 2018 | AT | national |
Filing Document | Filing Date | Country | Kind |
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PCT/AT2019/060294 | 9/11/2019 | WO | 00 |