Pastry forming machine

Abstract

A pastry forming machine (1) comprising a feeding device (400) for dough (50), a forming device (500) for forming dough pieces (52), a cutting device (200) for separating the dough pieces (52) from a dough band (51), and at least one first transport device (10) for transporting the dough pieces (52) from the area of ​​the cutting device (200) to a transfer area, wherein the forming device (500) is implemented by a rotatable forming roller (502) and a counter-rotating kneading roller (501), characterized in that it has a design that enables easy installation, cleaning, and maintenance of the pastry forming machine (1) and / or individual assemblies, that the first transport device (10) has a belt cassette (100) that can be removed from the pastry forming machine (1), and that the belt cassette (100) has a transport belt (101).which is driven on a guide (102) by means of a belt drive roller (108) and can be tensioned by means of a deflection and tensioning roller (110), and that the belt cassette (100) has a connection system (105) corresponding to the installation location of the belt cassette (100) in the pastry forming machine (1), so that the belt cassette (100) can be guided safely both when inserted into and removed from the pastry forming machine (1), wherein the motor for driving the transport belt (101) of the belt cassette (100) is arranged outside the belt cassette (100) in the pastry forming machine (1), and wherein the cutting device (200) has a belt knife (202) which can be tensioned by means of a tensioning device (203).

Description

[0001] The invention relates to a pastry forming machine for forming dough pieces, in particular dough pieces for food.

[0002] In industrial food production, machines are used to shape dough pieces, which can be used to form foods such as shortcrust pastry, honey and syrup dough or marzipan, which can then be further processed in subsequent production steps, for example by baking and / or coating with chocolate, into end products such as cakes or cookies.

[0003] The machines used to shape dough pieces for pastries are called pastry forming machines.

[0004] Pastry forming machines are already known from the prior art, by which a supplied dough can be formed using counter-rotating rollers, one of which is designed as a kneading roller and the other as a forming roller, the formed dough pieces can be cut from the kneading roller using a knife and the formed dough pieces can be transported to a baking tray using a conveyor belt.

[0005] US patent 2,695,571 describes such a pastry forming machine. The forming roller has recesses on its outer surface that serve as molds for the dough pieces to be formed. The kneading roller has ribs to convey the dough into the area of ​​the forming roller and the knife, resulting in a gear-like cross-section.

[0006] However, due to their design, existing pastry forming machines are insufficiently accessible for installation, cleaning, and maintenance, either as a whole or of individual components. This makes hygienic operation of the machines difficult or only possible with considerable effort. Furthermore, the blades on these prior art pastry forming machines require complex assembly and adjustment; the blades are relatively unstable, and wider versions require support from a central bracket.

[0007] One object of the invention is therefore to provide an improved pastry forming machine.

[0008] This problem is solved according to the invention by a pastry forming machine having the features of claim 1.

[0009] Another objective of the invention is to provide a pastry forming machine with improved maintainability.

[0010] This problem is solved according to the invention by a pastry forming machine comprising a removable belt cassette with the features of claim 2.

[0011] Furthermore, this problem is solved according to the invention by a pastry forming machine comprising a cutting device with the features of claim 6.

[0012] Another object of the invention is to provide a pastry forming machine with improved ergonomics with regard to the cutting device.

[0013] This problem is solved according to the invention by a pastry forming machine comprising a cutting device with the features of claim 6.

[0014] Another objective of the invention is to provide a pastry forming machine that enables more hygienic operation.

[0015] This task is solved by a pastry forming machine comprising a transport device with hygienic joints, which realizes the features of claim 10.

[0016] Furthermore, this task is solved by a pastry forming machine comprising a feeding device which realizes the features of claim 13.

[0017] Furthermore, this task is solved by a pastry forming machine having a roller locking mechanism that realizes the features of claim 16.

[0018] The features of a pastry forming machine described below are part of the invention, both individually and in all feasible combinations.

[0019] A pastry forming machine according to the invention is improved with regard to its maintainability, simplified installation and / or cleaning overall or of assemblies compared to the prior art by having novel design details, particularly in the area of ​​the transport device and / or the feeding device and / or the forming device and / or the cutting device.

[0020] A pastry forming machine according to the invention has at least one feeding device, one forming device, one cutting device and one transport device.

[0021] The feeding device allows dough to be fed into the area of ​​the forming device.

[0022] In one embodiment of the invention, the feeding device is designed as a dough funnel into which the dough can be poured.

[0023] In one embodiment of the invention, the forming device comprises at least one kneading roller and at least one forming roller. The forming roller and the kneading roller each have a cylindrical or hollow cylindrical base body.

[0024] The kneading roller and the forming roller can each rotate in opposite directions around their longitudinal axis and are arranged at a certain distance from each other with parallel axes of rotation.

[0025] The rotation of the kneading roller creates a dough band around the outer surface of the kneading roller, the thickness of which is determined by the distance between the kneading roller and the forming roller.

[0026] The forming roller has at least one recess or depression on its outer surface, which serves as a mold and thus as a negative for the dough pieces to be formed. Preferably, the forming roller has several shapes next to each other, which in embodiments of the invention can be repeated along the circumference of the forming roller. Multiple arrangements of the same shape, as well as arrangements of different shapes on a single forming roller, are possible.

[0027] In a preferred embodiment of the invention, the kneading roller has a structured outer surface, for example designed as ribs running parallel to the axis of rotation, so that the dough can be transported more easily with the kneading roller.

[0028] Due to the counter-rotating nature of the forming roller in relation to the kneading roller, raised quantities of dough can be applied to the dough band formed around the kneading roller; these are positives of the shape(s) arranged on the forming roller.

[0029] In a preferred embodiment of the invention, the at least one forming roller is heatable. For this purpose, the pastry forming machine according to the invention has a heating device that implements forming roller heating. Heating the forming roller is advantageous for processing certain doughs that would otherwise adhere too strongly to the forming roller.

[0030] The cutting tool of the cutting device is arranged behind the forming roller in the direction of rotation of the kneading roller.

[0031] In one embodiment of the invention, the cutting tool comprises an oscillating blade with a cutting edge extending longitudinally along the kneading roller, parallel to the nearest section of the kneading roller's outer surface. The cutting tool allows the dough positives applied to the dough sheet by the forming roller to be cut off the dough sheet.

[0032] The dough pieces separated from the dough band by means of the cutting tool can be transported away from the area of ​​the forming device to a baking tray and / or to conveyor belts of a second transport device using the transport device.

[0033] In a preferred embodiment of the invention, the transport device has at least one conveyor belt.

[0034] In a particularly preferred embodiment of the invention, the pastry forming machine has at least one first transport device with a removable belt cassette. The belt cassette is designed so that it can be easily and quickly removed from the pastry forming machine, for example, to clean or replace the conveyor belt.

[0035] In one embodiment of the invention, the tape cassette has a conveyor belt that can be driven continuously on a guide.

[0036] In one embodiment of the invention, the conveyor belt can be driven by means of a rotatable belt drive roller.

[0037] In a particularly preferred embodiment of the invention, the straight running of the conveyor belt of the belt cassette can be supported by a drive shaft that tapers conically towards the ends on both sides.

[0038] In a preferred embodiment of the invention, the belt cassette has a deflection and tensioning roller with which the conveyor belt can be tensioned. For this purpose, the axis of the deflection and tensioning roller is displaceable relative to the stationary axis of the belt drive roller in a direction perpendicular to the parallel axes of the deflection and tensioning roller and the belt drive roller.

[0039] In a particularly preferred embodiment of the invention, overstretching of the conveyor belt of the tape cassette by means of a spring mechanism can be structurally avoided.

[0040] In one embodiment of the invention, the tape cassette has a support device on which the tape drive roller and the deflection and tensioning roller are rotatably mounted. Preferably, the support device has two plate-like side walls that are arranged parallel to each other at a distance such that the tape drive roller and the deflection and tensioning roller can be positioned longitudinally between the side walls.

[0041] In an advantageous embodiment, the belt cassette has an adjusting wheel for belt tracking, which allows the conveyor belt to be positioned in a direction transverse to the direction of travel. This is particularly necessary when self-regulation is no longer sufficient, for example, due to dough buildup on the drive shaft and a resulting change in the relevant shaft geometry.

[0042] In a preferred embodiment of the invention, the guide for the conveyor belt on the upper side of the belt cassette is designed such that the conveyor belt has a gradient in the direction of travel, descending from a first transfer area for the dough pieces behind the cutting tool towards a second transfer area, where the dough pieces can be transferred from the conveyor belt of the belt cassette to another conveyor belt and / or placed on a baking tray. The transport section of the conveyor belt is arranged between the transfer areas.

[0043] In a particularly preferred embodiment of the invention, the conveyor belt in the assembled state of the belt cassette in the pastry forming machine slopes uniformly in the transport area, and the surface of the conveyor belt lies approximately in a plane within the transport area. By creating a slope with the conveyor belt of the belt cassette in the transport area for dough pieces and the corresponding guide, the accumulation of dough residue is reduced compared to an approximately horizontal arrangement, particularly next to the conveyor belt.

[0044] In the second transfer area of ​​the conveyor belt of the tape cassette, that is, at the end of the transport area, the conveyor belt in a preferred embodiment of the invention can be deflected by means of the guide and returned below the conveyor belt in the transport area.

[0045] In an advantageous embodiment of the invention, a dough scraper device is arranged in the direction of travel of the conveyor belt behind the second transfer area and in front of the deflection and tension roller and the belt drive roller, with which dough residues can be scraped from the surface of the conveyor belt, so that in particular as little dough residue as possible gets into the area of ​​the deflection and tension roller and the belt drive roller.

[0046] In one embodiment of the invention, the tape cassette can be locked in the pastry forming machine.

[0047] In a preferred embodiment of the invention, the belt cassette has a connection system corresponding to the installation location of the belt cassette in the pastry forming machine, with which the belt cassette can be guided securely both when being inserted into and removed from the pastry forming machine, so that incorrect assembly of the belt cassette in the pastry forming machine is excluded.

[0048] In a particularly preferred embodiment of the invention, the connection system on the side of the belt cassette is realized as guide grooves arranged on the outside of the side walls, into which guide pins of the pastry forming machine engage.

[0049] Furthermore, a locking device for locking the belt cassette in the correct assembly position within the pastry forming machine is particularly preferred.

[0050] In one embodiment of the invention, the conveyor belt of the removed belt cassette can be tensioned and / or released by means of at least one tensioning device. For example, the at least one tensioning device has at least one tensioning lever.

[0051] The relaxed conveyor belt can be removed from the belt cassette and / or replaced.

[0052] In a preferred embodiment of the invention, the pastry forming machine has a motor for driving the belt drive roller, which is arranged outside the belt cassette. This avoids the use of electronic components in the belt cassette, so that the belt cassette can be easily cleaned using water and cleaning agents.

[0053] In one embodiment of the invention, the tape drive roller of the tape cassette can be driven by a drive pinion from a motor located outside the tape cassette.

[0054] The invention allows for the use of conveyor belts made of different materials. For example, the use of conveyor belts made of plastic, woven cotton, or woven plastic is possible.

[0055] The cutting tool, and especially the blade setting, is particularly important in a pastry forming machine, as varying thicknesses of the cut dough pieces result in uneven baking. Thinner dough pieces, at the same baking time and temperature, experience greater heat exposure and are therefore baked more intensely. For consistent and predictable product quality, the blade must remain perfectly straight during the cutting process and cut evenly across the entire forming width, parallel to the surface of the kneading roller.

[0056] In a preferred embodiment of the invention, the cutting tool comprises a knife designed as a strip steel knife, which can be held and clamped by means of a clamping device.

[0057] In a particularly preferred embodiment of the invention, the knife is provided with a PTFE coating.

[0058] In a particularly preferred embodiment of the invention, the clamping device is designed as a clamping bracket comprising at least one clamping lever.

[0059] For example, the knife is fixed to one side of the clamping bracket using a fastener. On the other side of the clamping bracket, a clamping lever is arranged, to which the knife is fixed using a fastener, and the knife can be clamped by the clamping lever, for example, using a screw.

[0060] In one embodiment of the invention, the cutting tool has an adjustable and oscillatingly driven cutter shaft.

[0061] In one embodiment of the invention, the clamping device is arranged on the cutter shaft, by which the cutter can be held and clamped. The clamping device is fixedly connected to the cutter shaft, whereby the connection can also be designed as a detachable connection, for example a screw connection.

[0062] In a particularly preferred embodiment of the invention, the cutting edge of the knife runs parallel to the axis of the knife shaft.

[0063] The cutter shaft can be oscillated in the longitudinal direction of the shaft by means of a cutter drive, so that the cutter can also be oscillated in the direction of its longitudinal extension.

[0064] In one embodiment of the invention, the knife drive is designed as a rotatable motor, the rotational movement of which can be transferred into a translational movement of the knife shaft by means of a translation mechanism.

[0065] In one embodiment of the invention, the translation mechanism is designed as a block connected to the cutter shaft, which has an opening shaped like an elongated slot. A rolling bearing, mounted eccentrically on the drive shaft of the cutter drive (designed as a rotatable motor), is rotatable within this elongated slot. The longitudinal direction of the elongated slot is perpendicular to the axis of rotation of the cutter shaft, and the axis of rotation of the rolling bearing is parallel to the axis of rotation of the motor's drive shaft.

[0066] In a particularly preferred embodiment of the invention, the transmission mechanism comprises a bearing block connected to the block, in which the rolling bearing, mounted eccentrically on the drive shaft of the rotating motor, runs in an elongated hole. The use of a bearing block reduces friction and thus wear.

[0067] In another embodiment of the invention, the knife drive is designed as a linear drive, by which the knife shaft can be driven directly in a translational manner.

[0068] In a preferred embodiment of a pastry forming machine, the knife shaft, and thus also the cutting edge of the knife, is arranged parallel to the axis of rotation of the kneading roller. Furthermore, the cutting edge is aligned opposite to the direction of travel of the kneading roller.

[0069] In a particularly preferred embodiment of the invention, the knife is pivotable about the axis of the knife shaft by means of a pivoting device, so that the distance of the cutting edge of the knife from the outer surface of the kneading roller is adjustable. This allows the thickness of the dough pieces to be adjusted depending on the depth of the shapes of the forming roller, whereby pivoting the knife towards the outer surface of the kneading roller increases the thickness and pivoting the knife away from the outer surface of the kneading roller decreases the thickness of the dough pieces.

[0070] In a particularly preferred embodiment of the invention, the knife shaft is mounted with an eccentric bearing in the area of ​​the pastry machine, so that even after a pivoting of the knife shaft or the knife, the parallelism of the cutting edge of the knife and the outer surface of the kneading roller can be ensured.

[0071] The eccentric bearing preferably includes an adjustment device for setting the bearing position of the cutter shaft. Furthermore, in one embodiment of the invention, the cutter shaft bearing can be fixed in a set bearing position using fastening means.

[0072] In an advantageous embodiment of the invention, the pivoting of the knife is adjustable so finely that the distance of the cutting edge of the knife to the outer surface of the kneading roller in the cutting area, and thus the thickness of the dough pieces, can be specified to an accuracy of tenths of a millimeter.

[0073] In one embodiment of the invention, the swivel device has an adjusting screw for setting the knife position, wherein the swivel angle of the knife shaft or the knife can be controlled via a coupling mechanism by the position of the adjusting screw.

[0074] In one embodiment of the invention, the coupling mechanism comprises a cam disc that can be pivoted about an axis by means of an adjusting screw. Preferably, the adjusting screw is coupled to the cam disc via a detent disc, so that the cam disc can be pivoted about its axis in defined steps. Furthermore, in this embodiment, the coupling mechanism comprises a contact element that projects perpendicularly from the cutter shaft and by which the pivoting of the cam disc can be transmitted to the cutter shaft. Preferably, the coupling mechanism of this embodiment also comprises a spring element that exerts a force, at least indirectly, on the contact element, so that the contact element is always in contact with the cam disc.

[0075] In a particularly preferred embodiment of the invention, the translational movement of the knife axis and the components connected to the knife axis can be decoupled at least from the adjusting screw for setting the pivoting of the knife by means of the coupling mechanism, so that the adjusting screw can be mounted in a fixed position on the pastry forming machine.

[0076] In a particularly preferred embodiment, the contact element of the coupling mechanism is designed as a roller which is rotatable about an axis perpendicular to the axis of rotation of the cutter shaft, so that the cam disk is a fixed component except for its rotatability about its axis and the contact element is rollable on one side of the cam disk with the movement of the cutter axis.

[0077] In an advantageous embodiment of the invention, the pivoting of the knife shaft is limited by means of the pivoting device, thus preventing the knife from pivoting into the immediate vicinity of the outer surface of the kneading roller. This eliminates the possibility of damage to the knife and / or the kneading roller caused by the knife pressing against the outer surface of the kneading roller.

[0078] In one embodiment of the invention, the pivotability of the cutter shaft by the pivoting device is limited by means of a stop element.

[0079] In a particularly preferred embodiment of the invention, the knife can be oscillated at a high frequency using the knife drive.

[0080] In one embodiment of the invention, the knife can be oscillated by means of the knife drive at a frequency in a frequency range of 20 to 30 Hz.

[0081] In an advantageous embodiment, at least one of the oscillating components of the cutting tool is designed in a lightweight construction to reduce the centrifugal forces occurring during oscillation, so that any bearing loads associated with the centrifugal forces are kept as low as possible.

[0082] In one embodiment of the invention, the clamping device is at least partially manufactured in a lightweight construction.

[0083] In a preferred embodiment of the invention, the clamping device is at least partially made of high-strength and lightweight aircraft aluminum.

[0084] In one embodiment of the invention, the cutter shaft is at least partially manufactured in a lightweight design.

[0085] In a preferred embodiment of the invention, the cutter shaft is essentially designed as a tube that is reinforced to form a solid rod only in the end regions.

[0086] In one embodiment of the invention, the pastry machine has at least one second transport device with which the dough pieces transported away from the area of ​​the cutting tool by means of the first transport device, for example designed as a belt cassette, can be transported directly or on baking trays.

[0087] Particularly preferably, the second transport device is arranged below the first transport device and extends approximately horizontally in one direction through the entire pastry forming machine.

[0088] In one embodiment of the invention, the second transport device has at least one conveyor belt, a guide for the at least one conveyor belt and a drive for the at least one conveyor belt of the second transport device.

[0089] In one embodiment of the invention, the second transport device has a plurality of approximately parallel narrow conveyor belts that are arranged at a distance from each other, so that, for example, crumbs of dough falling from the area of ​​the first transport device can fall between the conveyor belts.

[0090] To facilitate the feeding of baking trays and the removal of baking trays loaded with dough pieces, the second transport device preferably projects beyond the rest of the pastry forming machine in and against the direction of travel of the transport belt of the second transport device.

[0091] For space-saving storage or transport of such a pastry forming machine, the parts of the second transport device that project beyond the rest of the pastry forming machine are foldable in an advantageous embodiment of the invention. For this purpose, the second transport device has at least one hinge for each area of ​​the second transport device that projects beyond the rest of the pastry forming machine, about whose axis of rotation the respective area of ​​the second transport device can be folded.

[0092] In a particularly preferred embodiment of the invention, the at least one joint is completely sealed to the outside, so that a hygienic design is achieved which also reduces the risk of injury.

[0093] In one embodiment of the invention, the second transport device has two joints for each foldable area.

[0094] In one embodiment of the invention, the joint has a housing that is divided into a fixed part and a movable part. The fixed part of the housing is connected to the support structure of the fixed part of the second transport device, and the movable part of the joint is connected to a hinged area of ​​the second transport device.

[0095] In a preferred embodiment of the invention, the joint has a locked position in which the joint cannot be rotated or can only be rotated upwards, and a free position in which the joint can be rotated upwards and downwards.

[0096] In an advantageous embodiment of the invention, this functionality is achieved by the joint having at least one guide element internally connected to the stationary part of the housing, in whose guide structure at least one guided element runs in the locked state of the joint, which is rigidly connected to the movable part of the joint housing. In the free position of the joint, the guided element does not run in the guide structure.

[0097] For example, the stationary guide element has a groove in which a bolt-like guided element can be guided. The use of at least one bolt-like stationary guide element and one guided element with a groove is also envisaged.

[0098] In one embodiment of the invention, the stationary and movable parts of the joint housing are each designed as hollow cylinders. The at least one stationary guide element is arranged within the stationary part of the housing. The stationary and movable parts of the housing are arranged side by side such that the central axes of the hollow cylinders are aligned. A sealing ring or a sliding ring is arranged between the housing parts, allowing the housing to be sealed between the housing parts. The outer openings of the hollow cylindrical housing parts are closed by means of cover caps.

[0099] In one embodiment of the invention, both cover caps are connected to the movable part of the housing. The cover caps are connected to each other by a central guide shaft, the longitudinal axis of which forms the axis of rotation of the joint. For this purpose, the guide shaft is rotatably mounted about its longitudinal axis in the stationary housing part, for example, in the stationary guide element. By connecting the cover caps to the movable housing part, they are coupled to each other, at least with respect to a rotational movement of the movable housing part.

[0100] In another embodiment of the invention, the cover cap that externally closes the stationary part of the housing is also designed to be stationary. The guide shaft connected to the cover cap of the movable housing part is rotatably mounted about its longitudinal axis in the movable part of the housing, for example in the stationary guide element, or in a bearing connected to the cover cap of the stationary housing part.

[0101] In one embodiment of the invention, at least one guided element is rigidly connected to the cover cap of the movable housing part and is designed in a bolt-like manner. The at least one guided element can be moved out of the guide structure of the stationary guide element by an axial displacement of the central guide shaft, so that the joint can be moved into the free position.

[0102] In a further embodiment of the invention, with the exception of the housing parts, the previously mentioned movable parts of the joint are fixed and the previously mentioned fixed parts are movable.

[0103] The joints according to the invention for a pastry forming machine are easily lockable, have no points where an operator of the machine could get pinched, are hygienic due to the closed surface and finely adjustable by means of a stop.

[0104] In a further embodiment of a pastry forming machine according to the invention, it has a feeding device designed as a funnel, which enables improved hygiene during the operation of the pastry forming machine.

[0105] The funnel is designed in such a way that it is very easy to clean. In a preferred embodiment of the invention, this is achieved by means of funnel plates that can be removed from the funnel.

[0106] With the help of the funnel sheets, at least part of the inner walls of the funnel are lined in an assembled state, so that the inner walls of the funnel located in the food contact area are more easily accessible for cleaning.

[0107] In a preferred embodiment of the invention, at least the front and rear walls of the funnel are provided with removable funnel plates.

[0108] In a further embodiment of the invention, the pastry forming machine has devices in the area of ​​the hopper to increase the operational safety of the pastry forming machine.

[0109] In particular, the penetration of limbs or parts of clothing or accessories of an operator into the area of ​​the roller pair defined by the forming roller and the kneading roller must be avoided.

[0110] In one embodiment of the invention, the funnel has a funnel lid, for example designed as a protective grid, by which the funnel can be closed at its open side.

[0111] In a preferred embodiment, the funnel lid is coupled to a switch, so that operation of the roller pair is prevented when the funnel lid is open.

[0112] The switch is preferably located inside the pastry forming machine so that it cannot be bypassed by a machine operator. For example, the switch can be located in the gearbox housing.

[0113] In one embodiment of the invention, the funnel lid is connected to the funnel by means of at least one hinge, so that the funnel lid can be folded onto the funnel.

[0114] In a further embodiment of the invention, the funnel has, for example, protective wall elements designed as protective grids or protective plates on the sides of the funnel which are provided with removable funnel plates, so that it is not possible to reach into the funnel when the removable funnel plates on these sides are not mounted.

[0115] In one embodiment of the invention, the funnel side walls encompass the side surfaces of the roller pair and rest on both the outer surfaces of the kneading roller and the forming roller, as well as on their shoulders. This design of the funnel side walls ensures a very good seal in the area of ​​the roller inlet, so that the dough remains within the funnel.

[0116] In an advantageous embodiment of the invention, the sealing surfaces on the funnel side walls have inlet slopes, so that the dough can be continuously fed to the inside of the funnel during operation and a build-up on the funnel walls can be avoided.

[0117] In one embodiment of the invention, the hopper of the feeding device is spring-mounted, so that the weight of the hopper is reduced during opening and closing, thus minimizing the risk of injury to an operator.

[0118] In a preferred embodiment of the invention, the funnel is rotatably mounted on a shaft which is spring-loaded to torsion by means of a tension spring via a lever arm.

[0119] In one embodiment of the invention, this suspension is arranged in the gearbox of the pastry forming machine.

[0120] In a further embodiment of a pastry forming machine according to the invention, it has a roller locking mechanism for the forming roller and the kneading roller.

[0121] The roller locking mechanism preferably has a fixing device with which each roller can be aligned and fixed in the aligned position in such a way that the respective roller has a fixed axis of rotation.

[0122] The fixing device for the rollers is particularly preferably designed as a quick-release clamping device.

[0123] The forming roller and the kneading roller can be installed and removed quickly and easily thanks to a roller locking mechanism.

[0124] In a preferred embodiment of the invention, the forming roller and the kneading roller can each be clamped between two roller flanges, wherein one roller flange is spring-mounted and the other roller flange is connected to the fixing device.

[0125] The roller flange connected to the fixing device is designed as a locking flange, which can be pressed laterally against the respective roller by means of a clamping bolt. The clamping bolt is rotatably mounted in the locking flange about the axis of rotation of the roller.

[0126] In one embodiment of the invention, the locking flange has a rolling bearing, for example designed as a ball bearing.

[0127] In one embodiment of the invention, where the fixing device is designed as a quick-release clamping device, the clamping bolt is connected at its other end to a sliding sleeve having a helical groove. The sliding sleeve is rotatably mounted in a mounting flange, with a stationary drive pin projecting into the helical groove. By rotating the sliding sleeve using a lever connected to it, the sliding sleeve can be displaced axially, thereby clamping the clamping bolt and thus the locking flange against the roller.

[0128] The rollers have recessed recesses on their sides into which roller flanges can be pressed to fit precisely. This allows the rollers to be centered on their respective axis of rotation.

[0129] The single-sided spring-loaded mounting of the rollers using the roller locking mechanism sufficiently reduces the load on the rolling bearing located in the area of ​​the locking flange by means of the roller tension applied by the fixing device. Furthermore, the transverse force resulting from the heating of a roller and the associated roller expansion can also be reduced.

[0130] In one embodiment of the invention, the rollers can be driven by means of a gearbox via at least one motor.

[0131] To transfer energy to the rollers, each roller flange has at least two drive pins protruding from the flange in the direction of the roller, which engage in corresponding recesses in the area of ​​the roller body.

[0132] In a preferred embodiment, the roller flange that is not connected to the fixing device is coupled to the gearbox of the roller drive.

[0133] In a particularly preferred embodiment of the invention, the pastry forming machine has at least one storage device, for example designed as a positioning pin, for each of the forming roller and the kneading roller, on which the respective roller can be placed when installed close to the position intended for operation in the pastry forming machine. By clamping the roller using the quick-release clamping device, it can be lifted from the storage device or the positioning pins and thus rotated freely.

[0134] In one embodiment of the invention, the forming roller is designed as a segmented roller.

[0135] In a preferred embodiment of the invention, the forming roller is divided in the axial direction into a plurality of roller segments, which are individually replaceable.

[0136] In one embodiment, the forming roller, designed as a segmented roller, has a solid cylindrical or tubular roller core on which the roller segments can be positioned next to each other.

[0137] Designing the forming roller as a segmented roller offers the advantage that individual roller segments, and thus the shapes of these roller segments, are interchangeable for production, making it possible to change motifs even on a single forming roller.

[0138] In one embodiment of the invention, the pastry forming machine has the joints for the second transport device described above, a funnel with removable funnel plates described above, and a roller locking device described above.

[0139] In a preferred embodiment of the invention, the pastry forming machine is designed for forming dough pieces or cake bases of different thickness and / or size and / or shape and / or surface structure.

[0140] In a preferred embodiment of the invention, the pastry forming machine is adapted to transferring the dough pieces onto baking trays commonly used in the market, wherein the widths of the baking trays are 250 mm, 400 mm, 450 mm and 580 mm and the heights of the baking trays vary between 1 mm and 55 mm. The use of baking trays with special dimensions is also possible in an advantageous embodiment of the invention.

[0141] In a particularly preferred embodiment of the invention, the pastry forming machine can be configured in such a way that it can be integrated into existing production lines.

[0142] In one embodiment of the invention, the second transport device is designed for transporting baking trays and is continuously height-adjustable, so that baking trays or cake trays of different heights can be loaded with dough pieces using the first transport device. In particular, the height to the transfer edge of the conveyor belt of the first transport device is adjustable.

[0143] In one embodiment of the invention, a large proportion of the surfaces have slopes / gradients, so that the drainage of, for example, water and crumbs is facilitated and a permanent accumulation of dirt can be avoided.

[0144] In another embodiment of the invention, the pastry forming machine has a PLC control system.

[0145] In a preferred embodiment of the invention, the HMI (user interface) of the pastry forming machine has a movable touch display.

[0146] In one embodiment of the invention, the display can be used to show assistance to an operator of the pastry forming machine.

[0147] In one embodiment of the invention, the forming roller heating is designed as an air convection heating system.

[0148] In a further embodiment of the invention, the forming roller heating is designed as an infrared heater.

[0149] In a further embodiment of the invention, the oscillation frequency of the knife is adjustable in steps.

[0150] In a preferred embodiment of the invention, the oscillation frequency is adjustable in two stages, so that very soft doughs can be cut at a higher oscillation frequency. This is advantageous because otherwise soft doughs would stick too much to the blade and be compressed. In the case of firmer doughs, the lower oscillation frequency can be set, thereby reducing the mechanical stress on the cutting device.

[0151] In one embodiment of the invention, the blade can be automatically covered by a movable cover plate as soon as the funnel is opened. This prevents an exposed blade, which would otherwise pose a risk of injury.

[0152] In a further embodiment of the invention, the pastry forming machine has sensors with which the precise positioning of the dough pieces on a baking tray can be monitored.

[0153] In a preferred embodiment of the invention, the control system of the pastry forming machine allows the pastry forming machine to be stopped automatically as soon as a baking tray is completely filled with dough pieces. This can be detected by means of sensors.

[0154] In one embodiment of the invention, the second transport device has adjustable guide rails for baking trays, allowing the baking trays to be fed in precisely. The guide rails are designed for easy cleaning.

[0155] In a further embodiment of the invention, a collection tray is arranged below the first transport device, through which, for example, residual dough scraped off the conveyor belt by means of the dough scraping device can be collected, so that this residual dough can be reused.

[0156] In one embodiment of the invention, the machine features a roller tray on which forming rollers and / or kneading rollers can be placed in a horizontal orientation. Preferably, the roller tray is arranged in the base of the pastry forming machine. The rollers are well protected in the roller tray and can dry after use and cleaning.

[0157] In one embodiment of the invention, necessary markings and type designations are applied to the machine using electrogalvanic marking methods, making them indelible. Furthermore, such markings are suitable for surfaces in direct food contact and splash zones.

[0158] The following figures schematically illustrate exemplary embodiments of the invention. They show: Fig. 1: A side view of a vertical section of a pastry forming machine according to the invention, Fig. 2: A perspective view of a section of a pastry forming machine according to the invention, Fig. 3: A schematic side view of a section in the area of ​​the in Fig. 2 shown section of a pastry forming machine according to the invention, Fig. 4: A perspective view of a pastry forming machine according to the invention with a removable belt cassette, Fig. 5: A perspective view of a transport device designed as a belt cassette of a pastry forming machine according to the invention, Fig. 6: A side view of a vertical section of the tape cassette made of Fig. 5, Fig. 7: A perspective view of the tape cassette from the Fig. 5 and Fig. 6 with the locking mechanism extended, Fig. 8: A perspective view of the tape cassette from Fig. 7 with the locking mechanism folded in, Fig. 9: A perspective view of the cutting tool of an embodiment of a pastry forming machine according to the invention, Fig. 10: Another perspective view of the cutting tool from Fig. 9, Fig. 11: Another perspective view of a cutting tool of a pastry forming machine according to the invention, Fig. 12: A cut in the area of ​​the cutter shaft of the cutting device of an embodiment of a pastry forming machine according to the invention, Fig. 13: A perspective view of some essential elements of the [unclear] in the Fig. 9 and Fig. 10 cutting tools shown, Fig. 14: Two schematic representations of an embodiment of a cutting tool of a pastry forming machine according to the invention, Fig. 15: A perspective view of a section of an embodiment of a pastry forming machine according to the invention in the area of ​​the cutting device, Fig. 16: Another perspective view of a section of an embodiment of a pastry forming machine according to the invention in the area of ​​the cutting device, Fig. 17: A side view of the in Fig. 16 depicted section of a pastry forming machine, Fig. 18: Another perspective view of a section of an embodiment of a pastry forming machine according to the invention in the area of ​​the cutting device, Fig. 19: A perspective view of an embodiment of a pastry forming machine according to the invention in the area of ​​a section of the second transport device, Fig. 20: A sectional view of a joint of an embodiment of a pastry forming machine according to the invention, Fig. 21: Another cross-sectional view of the in Fig. 20 joint shown, Fig. 22: A perspective view of an embodiment of a pastry forming machine according to the invention, taken obliquely from above, Fig. 23: A perspective view of a section of an embodiment of a pastry forming machine according to the invention in the area of ​​the feeding device, Fig. 24: A schematic sectional view in the area of ​​the feeding device of an embodiment of a pastry forming machine according to the invention, Fig. 25: A perspective view of a section of an embodiment of a pastry forming machine according to the invention in the area of ​​the rollers of the forming device, Fig. 26: A side view and a section along the longitudinal axis of the forming roller of an embodiment of a pastry forming machine according to the invention, Fig. 27: A side view and a section along the longitudinal axis of the kneading roller of an embodiment of a pastry forming machine according to the invention, Fig. 28: A perspective view of an embodiment of a pastry forming machine according to the invention, Fig. 29: A perspective view of an embodiment of a pastry forming machine according to the invention in the area of ​​the forming and kneading roller, Fig. 30: A perspective detail view of part of the roller locking mechanism of an embodiment of a pastry forming machine according to the invention and Fig. 31: Another perspective view of the in Fig. 30 shown roller locking mechanism of an embodiment of a pastry forming machine according to the invention.

[0159] Fig. Figure 1 shows a side view of a vertical section of a pastry forming machine (1) according to the invention. The pastry forming machine (1) has a housing (2) in or on which the other components of the pastry forming machine (1) are arranged. Rollers (3) are arranged on the underside of the housing (2) so that the pastry forming machine (1) can be moved easily.

[0160] In the upper section of the pastry forming machine (1), a feed device (400) designed as a dough hopper is arranged, into which dough (50) can be poured. Using the forming device (500), the dough (50) can be formed into dough pieces (52), which can be separated from the remaining dough (51) by means of the cutting device (200). After separation of the dough pieces (52), they can be transported from the area of ​​the forming device (500) and the cutting device (200) to the area of ​​a second transport device (7) by means of a first transport device (10) and transferred onto baking trays (60) that can be transported by the second transport device (7). A collection tray (4) for any residual dough that falls is arranged below the first transport device (10) for the dough pieces (52). In the lower area of ​​the pastry forming machine (1) it has a storage space (5) which has roller supports (6) for the rollers of the forming device (500).Furthermore, the pastry forming machine (1) has a control element (8) designed as a switch and a sensor (9) for detecting the dough.

[0161] In Fig. Figure 2 shows a perspective view of a section of a pastry forming machine (1) according to the invention to illustrate the operating principle. The forming device (500) has counter-rotating rollers, one of which is a kneading roller (501) and the other a forming roller (502). The forming roller (501) has heart-shaped recesses (503) in its outer surface, with five recesses (503) arranged in a row, which is repeated several times along the circumference of the forming roller (502). A dough band (51) has formed on the outer surface of the kneading roller (501), onto which dough pieces (52) formed by means of the recesses (503) of the forming roller (502) can be pressed.These dough pieces (52) can be cut from the dough belt (51) using the cutting device (200) and transported by a first transport device (10), which has a conveyor belt (101), to a second transport device (7) and placed on baking trays (60) that can be transported by the second transport device (7). A collection tray (4) for residual dough is arranged below the first transport device (10) and the second transport device (7).

[0162] Fig. Figure 3 shows a schematic side view of a section in the area of ​​the Fig. Figure 2 shows a section of a pastry forming machine (1) according to the invention. The direction of rotation of the forming roller (502) is counterclockwise, while the direction of rotation of the kneading roller (501) is clockwise.

[0163] In Fig. Figure 4 shows a perspective view of a pastry forming machine (1) according to the invention, with a first transport device (10) designed as a removable belt cassette (100). The pastry forming machine (1) has a control element (8) with a display. The second transport device (7) has hinges (300) by which the second transport device (7) can be folded in certain sections.

[0164] Fig. Figure 5 shows a perspective view of a belt cassette (100) of a first transport device (10). The conveyor belt (101) is guided on a guide (102) so as to be driven. The belt cassette (100) has a support device (103) that holds the guide (102) and has two plate-like side walls. A dough scraper (104) is arranged on the underside of the belt cassette (100) with which dough (50) adhering to the conveyor belt (101) can be scraped off. Guide grooves for the connecting device (105) for connecting the belt cassette (100) of the first transport device (10) to the pastry forming machine (1) are arranged on the outside of the side walls of the belt cassette (100). Furthermore, the tape cassette (100) has handles (106) in the upper area of ​​the side walls, by which the tape cassette (100) can be grasped by an operator or service personnel.Between the guide (102) of the conveyor belt (101) and the right side wall of the belt cassette (100) is arranged the operating element of a belt tracking adjustment device (107) designed as an adjusting wheel.

[0165] In Fig. Figure 6 shows a side view of a vertical section of the belt cassette (100) of the first transport device (10). The conveyor belt (101) runs on the guide (102) and can be driven by a belt drive roller (108). A drive pinion (109) is connected to the belt drive roller (108), via which the belt drive roller (108) can be driven by a drive located outside the belt cassette (100) of the first transport device (10). The conveyor belt (101) can be tensioned by the deflection and tensioning roller (110).

[0166] Fig. Figure 7 shows a perspective view of the area in the Fig. 5 and Fig. Figure 6 shows the belt cassette (100) of the first transport device (10) from below. To tension the conveyor belt (101) using the tensioning and deflection roller (110), the belt cassette (100) has two tensioning devices (111) designed as tensioning levers. In the position of the tensioning devices (111) shown, the conveyor belt (101) is relaxed, so that the conveyor belt (101) is replaceable.

[0167] In Fig. 8 is the one in the Fig. Figures 5 to 7 show a tape cassette (100) with tensioning devices (111) designed as tension levers and a transport tape (101) tensioned according to the position of the tension levers.

[0168] Fig. Figure 9 shows a perspective view of the cutting tool (201) of the cutting device (200) of an embodiment of a pastry forming machine (1) according to the invention. The cutting tool (201) has a band knife (202) which can be clamped using a clamping device (203). The clamping device (203) has a clamping bracket (204), a clamping lever (205), and a clamping screw (206). The band knife (202) is connected to the clamping bracket (204) on the left side and to the clamping lever (205) on the right side. The clamping lever (205) can be moved about a lever axis by means of the clamping screw (206), so that the band knife (202) can be clamped or unclamped in the clamping device (203).

[0169] The cutting tool (201) is connected to a cutter shaft (208) in the area of ​​the clamping bracket (204) by means of fasteners (207) designed as screws. The cutter shaft (208) is rotatably mounted on both sides in a bearing (209).

[0170] In Fig. 10 is the one in Fig. Figure 9 shows the cutting tool (201) in a perspective view from a different side. On the left side, the cutter shaft (208) is eccentrically mounted in the bearing (209).

[0171] Fig. Figure 11 shows a further perspective view of an embodiment of a cutting tool (201) of a pastry forming machine (1) according to the invention.

[0172] In Fig. Figure 12 shows a section in the area of ​​the cutter shaft (208) of the cutting device (200) of an embodiment of a pastry forming machine (1) according to the invention. The cutter shaft (208) is manufactured in a lightweight construction such that it is designed as a tube in a central area between the bearings (209) and is reinforced to a solid rod only in the area of ​​the bearings (209).

[0173] Fig. Figure 13 shows some components of the cutting tool (201) of an embodiment of a pastry forming machine (1) according to the invention. The band knife (202), the clamping bracket (204), and the clamping lever (205) are shown. The clamping bracket (204) has a contour adapted to the side designed for connection with the clamping lever (205), so that the clamping lever (205) can be rotatably mounted in a recess with a correspondingly shaped extension. Furthermore, the clamping bracket (204) and the clamping lever (205) have a thread or an opening, respectively, for receiving a clamping screw (206).

[0174] In Fig. Figure 14 shows the cutting tool (201) of an embodiment of a pastry forming machine (1) according to the invention. In the upper part of the figure, a clamping lever (205) is shown in a relaxed position, and in the lower part of the figure, a clamping lever (205) is shown in a tensioned position. It can be seen that the clamping lever (204) has a concave curve in its back area when the clamping device (203) is relaxed, while this curve can be reduced or completely straightened by tensioning the clamping device (203). The curve of the clamping lever (204) also serves as a visual indicator to check whether the band knife (202) is sufficiently tensioned.

[0175] Fig. Figure 15 shows a perspective view of a section of an embodiment of a pastry forming machine (1) according to the invention in the area of ​​the cutting device (200). The band knife (202) of the cutting device (200) is aligned with the outer surface of the kneading roller (501). By means of the knife drive (210), the knife shaft (208) and the cutting tool (201) connected to the knife shaft (208) can be driven in an oscillating manner, so that the band knife (202) is movable back and forth approximately parallel to the axis of rotation of the kneading roller (501). The knife drive (210) has a rotary motor, the rotational movement of which can be converted into an oscillating translational movement by means of a transmission mechanism (211) and transmitted to the knife shaft (208).

[0176] The translation mechanism (211) comprises a block (212) connected to the cutter shaft (208), in which an opening (213) is arranged as an elongated slot with a longitudinal direction perpendicular to the axis of the cutter shaft (208). An eccentrically mounted rolling bearing (214) on the motor shaft of the cutter drive (210) is arranged in the opening and is rotatable about an axis of rotation parallel to the axis of rotation of the cutter drive (210). A bearing block (215) with a corresponding opening is arranged in the region of the opening (213) and is screwed to the block (212).

[0177] Furthermore, the cutting device (200) has a pivoting device (216) which serves to adjust the position of the band knife (202) relative to the kneading roller (501) by rotating the knife shaft (208). The pivoting device (216) has an adjusting screw (218) which is coupled to the knife shaft (208) by means of a coupling mechanism (219). The coupling mechanism (219) has a detent disk (220) for adjusting the knife position in defined steps, a cam disk (221), and a contact element (222) designed as a roller, so that the translational movement of the knife shaft (208) can be decoupled from the rest of the coupling mechanism (219) of the pivoting device (216).By means of the cam disk (221), the translational movement of the axis connected to the adjusting screw (218) can be converted into a rotational movement during adjustment. This rotational movement is transmitted from the cam disk (221) via the contact element (222) to the cutter shaft (208). To limit the pivoting range of the cutter shaft (208) and the connected cutting tool (201), the cutting device (200) has a stop element (224) against which the contact element (222) abuts as soon as it has pivoted sufficiently around the cutter shaft (208). This prevents damage to the cutting tool (201) and / or the kneading roller (501) from contact between the band knife (202) and the kneading roller (501). Furthermore, the coupling mechanism (219) has a spring element (223) that keeps the contact element (222) in contact with the cam disk (221).

[0178] On the side of the knife drive (210) and the swivel device (216), the knife shaft (208) is supported in a central bearing (209b) and on the other side in an eccentric bearing (209a). The eccentric bearing (209a) is part of an adjustment device (217) for adjusting the bearing position of the cutting tool (201).

[0179] In Fig. Figure 16 shows a further perspective view of a section of an embodiment of a pastry forming machine (1) according to the invention in the area of ​​the cutting device (200).

[0180] Fig. Figure 17 shows a side view of the in Fig. Figure 16 shows a section of a pastry forming machine (1). The band knife (202) is aligned with the outer surface of the kneading roller (501). The block (212) encompasses the knife shaft (208) and is clamped to it by means of a screw. A force can be exerted on the cam disk (221) by means of the adjusting screw (218), so that it can rotate about its axis of rotation (221a).

[0181] In Fig. Figure 18 shows a further perspective view of a section of an embodiment of a pastry forming machine (1) according to the invention in the area of ​​the knife drive (210) of the cutting device (200).

[0182] Fig. Figure 19 shows a perspective view of an embodiment of a pastry forming machine (1) according to the invention in the area of ​​a section of the second transport device (7). The second transport device (7) is designed for transporting baking trays (60) and has two conveyor belts (101) designed as conveyor belts. The frame of the second transport device (7) is realized by frame members (301). Hinges (300) are arranged in the area of ​​the frame members (301) with which the second transport device (7) can be folded.

[0183] In Fig. Figure 20 shows a sectional view of a joint (300) of an embodiment of a pastry forming machine (1) according to the invention. The joint (300) has a fixed housing part (302a) and a movable housing part (302b) and is connected to tie bars (301). The tie bar (301) shown in the left part of the drawing is connected to the movable part of the joint (300) and is therefore also movable, as illustrated by the additionally shown positions of the tie bar (301) indicated by the dashed lines.

[0184] The joint (300) further comprises a guide element (303) designed as a perforated disk. The guide element (303) has a guide structure (304) formed as two ring-segment-shaped grooves or openings in the guide element (303). The housing (302) of the joint (300) is hollow and cylindrical, and its sides are closed with end caps (307). The end cap (307) of the movable housing part (302b) is connected by screws to two bolt-like guided elements (305), which, in the illustrated free position of the joint (300), do not project into the guide structure (304) of the guide element (303). Furthermore, the movable housing part (302b) is connected via the end cap (307) to a central guide shaft (307), which defines the axis of rotation of the joint (300). The central guide shaft (307) passes through the central hole of the guide element (303).A sealing and sliding ring (306) is arranged between the stationary housing part (302a) and the movable housing part (302b).

[0185] The components connected to the cover cap (307) of the movable housing part (302b) of the joint (300), including the cover cap (307) of the stationary housing part (302a), are movable in the axial direction with respect to the axis of rotation of the joint (300) by a defined stroke, so that the guided elements (305) can be moved into the guide structure (304) of the guide element (303). In the resulting locked position of the joint (300), movement of the movable part is only possible within the scope of the guide element (303), so that the movable link (301) in the illustrated embodiment can only be folded upwards.

[0186] Fig. 21 shows another cross-sectional view of the in Fig. The joint (300) shown in Figure 20 is in the locked position. The bolt-like guided elements (305) project into the grooved guide structure (304) of the guide element (304). It is also evident that the central guide shaft (308) is connected to both end caps (307) by means of screws. The elements of the joint (300), highlighted in gray from the rest of the illustration, are displaceable in the axial direction of the joint's (300's) axis of rotation by a stroke H. The stroke H is limited by a shoulder (309) on the inside of both the stationary housing part (302a) and the movable housing part (302b), which reduce the inner diameter of the respective housing part so that it is smaller than the diameter of the end caps (307).

[0187] On the right side of the drawing, the position of the cover cap (307) in the free position of the joint (300) is illustrated with a dashed line.

[0188] In Fig. Figure 22 shows a perspective view of an embodiment of a pastry forming machine (1) according to the invention, shown obliquely from above, with the feed device (400), designed as a funnel, set apart from the rest of the pastry forming machine (1). The funnel of the feed device (400) is laterally bounded by four funnel walls (401) and closed at the top by a funnel lid (402). The funnel lid (402) is pivotable about a pivot axis (403) so that the funnel can be opened for feeding, for example, dough. The funnel of the feed device (400) has side brackets (404) on the sides, which also serve as a guard against unauthorized access to the pastry forming machine (1).

[0189] Fig. Figure 23 shows a perspective view of a section of an embodiment of a pastry forming machine (1) according to the invention in the area of ​​the feeding device (400) with an open hopper. The hopper has removable hopper plates (406) on its front and rear sides. To protect the pastry forming machine (1) from unauthorized access when the hopper lid (402) is closed and the rear hopper plate (406) is removed, the feeding device (400) has a protective wall element (407) designed as a hopper guard plate, which, in the illustrated embodiment of the invention, is pivotable together with the hopper lid (402).

[0190] In Fig. Figure 24 shows a schematic sectional view of the feeding device (400) of an embodiment of a pastry forming machine (1) according to the invention. The hopper walls (401) are directly adjacent to the forming roller (502) and the kneading roller (501) of the forming device (500) of the pastry forming machine (1) on the underside of the feeding device (400).

[0191] In the left part of Fig. Figure 24 shows how the funnel walls (401) are designed to seal the funnel at the bottom. The side walls (405) each have a flat recess (408) on their underside, so that the side wall (405) can be placed on the respective roller shoulder (504, 505) and, in some areas, projects tightly over the outer surface of the respective roller.

[0192] In the right part of Fig. Figure 24 shows that the contour of the side walls (405) is adapted to the round shape of the forming roller (502) and the kneading roller (501) in the area of ​​the respective roller shoulder (504, 505).

[0193] Furthermore, the hopper of the feeding device (400) has inlet slopes (409) in the lower area.

[0194] Fig. Figure 25 shows a perspective view of a section of an embodiment of a pastry forming machine (1) according to the invention in the area of ​​the rollers (501, 502) of the forming device (500). Each of the rollers (501, 502) is locked by a roller locking device (506).

[0195] The rollers (501, 502) can each be held and rotatably mounted between two roller flanges (508) by means of the roller locking device (506). The roller locking device (506) has a spring-loaded bearing (509) on one side of each roller (501, 502). The fixing device (507) of the respective roller locking device (506) is arranged on the other side of each roller (501, 502).

[0196] In Fig. Figure 26 shows a side view and a section along the axis AA of the forming roller (502) of an embodiment of a pastry forming machine (1) according to the invention. The forming roller (502) has a roller core (510) designed as a tube, the tube being, for example, made of metal. The roller core (510) is enclosed by a roller shell (511), which is preferably made of a thermoplastic material. The roller shoulders (505) of the forming roller (502) each have an outwardly open receiving cup (512), which is designed as a circular disk-like recess in the material of the roller shoulders (505).

[0197] Fig. Figure 27 shows a side view and a section along the axis BB of the kneading roller (501) of an embodiment of a pastry forming machine (1) according to the invention. The kneading roller (501) has a roller shell (511) that encloses a cavity. The roller shell (511) is stiffened in the center of the kneading roller (501) by a support wall (513). The roller shoulders (504) of the kneading roller (502) each have an outwardly open receiving pan (512), which is designed as a circular disc-like recess in the material of the roller shoulders (504).

[0198] In Fig. Figure 28 shows a perspective view of an embodiment of a pastry forming machine (1) according to the invention. The fixing devices (507) of the roller locking mechanism (506) of the forming roller (502) and the kneading roller (501), which are designed as quick-release clamping devices, are highlighted.

[0199] Fig. Figure 29 shows a perspective view of an embodiment of a pastry forming machine (1) according to the invention in the area of ​​the forming roller (502) and the kneading roller (501). The forming roller (502) and the kneading roller (501) are each pushed onto a roller flange (508) on the right side with the receiving pan (512), which is rotatably mounted in a spring-loaded bearing (509). For simplified assembly of the rollers, the pastry forming machine (1) has a storage device (521) designed as a positioning pin. The rollers can be placed on these positioning pins relatively close to their position intended for operation. On the left side, the forming roller (502) and the kneading roller (501) are fixed by means of the fixing device (507). In the illustrated embodiment of the invention, the fixing devices (507) are designed as quick-release clamping devices.Each of the receiving pans (512) contains a roller flange (508) designed as a locking flange (514), which is connected to the rest of the fixing device (507) via a clamping bolt (516). The fixing devices (507) are each attached to the pastry forming machine (1) by a mounting flange (515). Each fixing device (507) has a lever (520) for actuating it.

[0200] In Fig. Figure 30 shows a perspective detail view of part of the roller locking mechanism (506) of an embodiment of a pastry forming machine (1) according to the invention. By rotating the fixing device (507) using the lever (520), the locking flange (514) clamped in the receiving pan (512) of a roller can be moved out of it.

[0201] In the lower part of the Fig. Figure 30 shows a cross-sectional view of the clamping device (507), which is implemented as a quick-release clamping device. The clamping device (507) has a sliding sleeve (517) connected to the lever (520), which has an internal helical groove (518). The clamping bolt (516) is non-rotatably mounted in the sliding sleeve (518). The clamping bolt (516) has a radially projecting drive pin (519) which is located in the helical groove (518). Rotation of the sliding sleeve (517) exerts a force on the clamping bolt (516) via the drive pin (518) through the helical groove (518), causing the clamping bolt to move along the axis of rotation of the roller. In the area of ​​the locking flange (514), the clamping bolt (516) is rotatably mounted by a rolling bearing (522) designed as a ball bearing.The clamping bolt (516) is flattened on two sides, this contour corresponding to the receiving of the clamping bolt (516) in the mounting flange (515), so that rotation of the clamping bolt (516) about its longitudinal axis is prevented.

[0202] Fig. Figure 31 shows another perspective view of the in Fig. 30 roller locking mechanism (506) of an embodiment of a pastry forming machine according to the invention (1). QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] US 2,695,571

[0005]

Claims

[1] Pastry forming machine (1) comprising a feeding device (400) for a dough (50), a forming device (500) for forming dough pieces (52), a cutting device (200) for separating the dough pieces (52) from a dough strip (51) and at least one first transport device (10) for transporting the dough pieces (52) from the area of ​​the cutting device (200) to a transfer area, wherein the forming device (500) is realized by a rotatable forming roller (502) and a counter-rotating kneading roller (501), characterized bythat it has a design which enables easy installation, cleaning and maintenance of the pastry forming machine (1) and / or individual assemblies, that the first transport device (10) has a belt cassette (100) that can be removed from the pastry forming machine (1), that the belt cassette (100) has a transport belt (101) which runs on a guide (102) and can be driven by means of a belt drive roller (108) and tensioned by means of a deflection and tensioning roller (110), and that the belt cassette (100) has a connection system (105) corresponding to the installation location of the belt cassette (100) in the pastry forming machine (1), so that the belt cassette (100) can be easily inserted into and removed from the machine.from the pastry forming machine (1) can be safely guided, wherein the motor for driving the conveyor belt (101) of the belt cassette (100) is arranged outside the belt cassette (100) in the pastry forming machine (1) and wherein the cutting device (200) has a belt knife (202) which can be clamped by means of a clamping device (203). [2] Pastry forming machine (1) according to claim 1, characterized by that the clamping device (203) has a clamping bracket (204) and a clamping lever (205). [3] Pastry forming machine (1) according to one of claims 1 or 2, characterized by, that the band knife (202) clamped in the clamping device (203) is attached to a knife shaft (208) with the clamping device (203), wherein the knife shaft (208) can be driven axially by means of a knife drive (210) in an oscillating direction and wherein the knife shaft (208) is rotatably mounted so that the knife shaft (208) can be pivoted by means of a pivoting device (216) to adjust the knife position. [4] Pastry forming machine (1) according to claim 3, characterized by , that the position of the cutter shaft (208) can be adjusted by means of an adjusting device (217) so that the parallelism of the cutting edge of the band knife (202) to the cylindrical surface of the kneading roller (501) can be ensured. [5] Pastry forming machine (1) according to at least one of the preceding claims, characterized by, that this has at least one second transport device (7) with which baking trays (60) can be transported, wherein the second transport device (7) has at least one foldable area which, in an unfolded state, extends beyond the rest of the pastry forming machine (1), wherein the foldable area can be folded by means of at least one externally sealed joint (300) so that a hygienic design is achieved. [6] Pastry forming machine (1) according to claim 5, characterized by , that the joint (300) has a fixed housing part (302a) and a movable housing part (302b), wherein the movable housing part (302b) is rotatable about an axis of rotation and wherein the joint (300) has a locked position in which the movable part of the joint is not rotatable or is rotatable only upwards, and a free position in which the movable part of the joint is rotatable upwards and downwards. [7] Pastry forming machine (1) according to claim 6, characterized by , that the joint (300) has a guide element (303) in which, in the locked state of the joint (300), at least one guided element (305) can be guided, wherein the at least one guided element (305) can be moved out of the guide of the guide element (303) by a displacement along the axis of rotation or parallel to the axis of rotation of the joint (300), so that the joint (300) can be moved into the free position. [8] Pastry forming machine (1) according to at least one of the preceding claims, characterized by , that the feeding device (400) is designed as a funnel, wherein the funnel is at least partially lined on its inside with removable funnel plates (406). [9] Pastry forming machine (1) according to claim 8, characterized by , that the feed device (400) designed as a funnel can be closed by means of a funnel lid (402). [10] Pastry forming machine (1) according to one of claims 8 or 9, characterized by , that the funnel has a protective wall element (407) at least on one side which is provided with a removable funnel plate (406). [11] Pastry forming machine (1) according to at least one of the preceding claims, characterized by , that the forming roller (502) and the kneading roller (501) can each be positioned in the positions provided for the operation of the pastry forming machine (1) by means of a roller locking device (506) and can be fixed rotatably about their respective axis of rotation, wherein the respective roller locking device (506) has a fixing device (507) with which the forming roller (502) or the kneading roller (501) can be clamped laterally between two roller flanges (508). [12] Pastry forming machine (1) according to claim 11, characterized by , that the forming roller (502) and the kneading roller (501) are spring-mounted on the side facing away from the fixing device (507). [13] Pastry forming machine (1) according to one of claims 11 or 12, characterized by , that the fixing device (507) is designed as a quick-release clamping device.

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