RU2269265C1 - Dough rolling machine - Google Patents

Abstract

FIELD: food-processing industry.

SUBSTANCE: dough rolling machine has housing including rigidity rib adapted for uniting side walls. Upper pair of rolls equipped with sprockets and lower pair of rolls equipped with sprockets are disposed on housing surface. Worm-and-wheel gear located within housing is provided with flexible coupling. Dough rolling machine has eccentric pin coupled to retaining handle, and retractable tray. Angle of tilt of upper inclined surface of housing makes 45 deg. Gap between upper pair of rolls is constant and constitutes 0.025 the distance between axes of respective pairs of rolls, and gap between lower pairs of rolls is adjustable. Flexible coupling extends from worm-and-wheel gear, runs around outer side of sprocket of lower roll of upper pair of rolls and extends tangentially to sprockets disposed between rolls of lower pair of rolls. Eccentric pin is movably positioned within one of lower rolls to provide for rotating adjustment of gap by means of retaining handle and defines base for rotation of roll of lower pair of rolls. Teeth of sprocket of lower pair of rolls are smaller in number than teeth of sprocket of upper pair of rolls by 3.5 times. Retractable tray is positioned for free access to lower rolls. Rigidity rib is disposed under pairs of rolls and is inclined in direction of retractable tray. Rigidity rib is made in the form of continuous bent sheet.

EFFECT: simplified construction and improved operating parameters.

5 dwg

Description

The invention relates to the food industry, namely, machines for rolling dough into thin sheets for bakeries, pasta and confectionery enterprises.

Known dough sheeter containing several rollers of various profiles. Rollers with a profile of a triangular section are designed to capture a portion of the dough and pre-kneading into the reservoir for feeding to the next pair of rollers. The next pair of rollers is made of a shaped profile and is intended for further kneading the dough in front of the rolled rollers. A pair of rolling rollers is intended for the final formation of a thin layer and the delivery of the latter to the receiving conveyor. The machine also contains rollers with brushes / marks Russian patent No. 2021723, 5 A 21 C 3/02 - analogue.

Known dough sheeter has a significant drawback. It is technologically difficult to obtain figured rollers and it is difficult to coordinate the angular rotational speeds of each of the pairs of rollers to stabilize the passage of masses per unit time. The complexity of the design and large dimensions, determined by the loading height and the length of the receiving conveyor belt, limit the use of the known dough sheeter.

Also known dough sheeter machine containing a pair of upper rolling rollers with a rotation drive. A pair of upper rollers is located above the lower pair of rolling rollers with its own rotation drive. It also contains a bunker for a portion of tough dough, a sensor system and a conveyor belt for receiving thin sheet / cm. Russian patent No. 2020824, 5 A 21 C 3/02 dated 05/12/90 - analogue /.

However, the known dough sheeter has a significant drawback, limiting the mass introduction of the machine in a small business. The design of the machine is quite complex, as it requires the use of an individual drive for each pair of rolling rollers and a complex electronic system for matching angular rotation speeds depending on the variable clearance between the rollers, i.e. the given thickness of the rolled dough. The use of a conveyor belt increases the size of the dough sheeter, which is a negative indicator with a shortage of production space.

Closest to the proposed technical solution is a dough sheeter, which contains two pairs of rolled rollers. Roller rollers are mounted on an inclined housing with a slope angle of 30 °. Between the pairs of rollers is placed a binding conveyor, which is designed to transfer the dough layer from the upper pair of rollers to the lower pair. The inclined conveyor by means of a chain transmission receives movement from the lower roller of the second pair of rolling rollers. Pairs of rolling rollers receive movement through another chain transmission from a worm gear motor / cm. Germany’s patent, No. 2624955, A 21 C 3/02 dated 06/03/76, the prototype /.

The known technical solution of the dough sheeter is quite compact, occupies a smaller production area in comparison with analogues, however, it has a number of significant drawbacks: the inability to change the angular speeds of rotation of the upper pair of rollers relative to the angular speeds of the lower pair and the speed of the conveyor belt. Changing the gap between the lower rollers changes the throughput of the dough mass. The gap between the lower rollers is variable and is provided by screws on each side at the locations of the thrust bearings. The difference in mass of the dough passing between the upper rollers and the lower rollers leads to damage to the resulting layer of rolled dough. In one case, when the mass of dough passing through the upper rollers exceeds the mass of dough that can pass through the lower pair of rollers, folds of the formation are formed. In the case when the mass of dough passing through the upper rollers is insufficient, a gap and a violation of the integrity of the formation occur. The presence of a conveyor belt complicates the design. The tension and adjustment in the confined space between the roll rollers of the conveyor belt during maintenance require highly skilled operator.

The purpose of the proposed technical solution is to simplify the design while maintaining high technological performance.

Figure 1 presents a General view of the dough sheeter. Figure 2 presents the dough sheeter in longitudinal section. Figure 3 presents the kinematic diagram of the dough sheeter. Figure 4 presents the structural embodiment of the node adjustment of the gap between the lower pair of rolled rollers.

Dough sheeter consists of a housing 1, the upper surface 2 of which is inclined with a slope angle of 45 °. On the inclined surface 2 of the housing 1 there are two pairs of rolling rollers. Moreover, in the upper part of the inclined surface 2 there is a pair of rolling rollers 3 with a constant gap between the rollers. In the lower part of the inclined body there is a pair of rolling rollers 4 with an adjustable gap between the rollers. The gap between the upper rolling rollers 3 is 0.025 of the distance between the axes of the pairs of rollers 3 and 4. The distance L between the axes of the pairs of rollers 3 and 4 is shown in Fig.2. The inclined surface 2 of the housing 1 is working and is a guide for the dough layer. Inside the housing 1 is mounted a worm gear motor 5. The rotation drive of all the rollers from the worm gear motor 5 is carried out by a single flexible link 6, for example, a chain drive. Flexible connection 6 bends around the axis of the lower roller 7 of the upper pair 3 from the outside and passes tangentially to the sprockets 8 between the axes of the rolling rollers 4 of the lower pair. In this case, the gearing of the teeth of the sprockets 8 of the lower rolling rollers 4 is not violated, however, a change in the gap between the latter is ensured. Flexible coupling provides such a gear ratio between pairs of rollers 3 and 4 that the angular velocity of the lower pair of rollers is 3.5 times greater than the angular velocity of the upper pair of rollers 3 / cm. figure 3 /. The upper roller 9 of the lower pair of rollers 4 contains an eccentric axis 10. The eccentric axis 10 is movably mounted in the housing 1 with the possibility of rotation of the locking handle 11. The spring-loaded clamp of the handle 11 is configured to enter the housing jacks. Each of the housing sockets corresponds to a certain gap between the lower pair of rollers 4. A drawer 12 is installed in the lower front of the housing 1. The side walls 13 of the housing 1 are connected by a stiffener 14, which is located under the rollers 3 and 4, made with a pendant in the direction of the drawer 12 and performs the function of a collector of flour, support for the drawer tray 12 and forming a niche for mounting electrical equipment, which includes a worm gear motor 5. The drawer 12 is located under an adjustable pair of rollers 4 in this way that when you remove the sliding tray 12 provides free access to the lower rolling rollers 4. The quality of the rolled formation contribute to three complementary structural factors:

1. The ratio of the difference in angular velocities of the lower pair of rollers to the upper pair is 3.5;

2. The slope angle of the guide plane is 45 °;

3. The gap between the upper rolling rollers is 0,025 distance L between the axes of the pairs of rollers.

The drive sprockets of the lower pair of rollers contain 3.5 times fewer teeth than the upper sprocket. This ensures equalization of the mass of the passing test between the pairs of rollers. The selected difference in angular velocities guarantees high-quality rolling of the dough layer, i.e. without creasing and without violating the integrity of the reservoir at any installation of the gap between the lower rollers within the adjustment. The combination of the three structural factors listed above ensures the quality of the rolled formation, does not allow any deterioration that could occur, for example, at a different slope angle as a result of a certain difference in the masses of dough passing between the pairs of rollers when adjusting the gap in the lower rollers. In the case of the passage of a larger mass through the upper rollers, the following occurs. As a result of slight friction on the ramp, the formation is braked and elastically deformed towards thickening without creasing. The accumulation of mass between the upper and lower pairs of rollers without the formation of folds is sufficient for the period of passage of the entire portion of the laid test. In the case of passing a smaller mass through the upper rollers, the layer located between the pairs of rollers uniformly thins along the entire length within the elastic deformation without violating the integrity.

Claims (1)

A dough sheeter comprising a housing including a stiffener combining side walls, on the surface of which there is an upper pair of expansion rollers equipped with an asterisk, and a lower pair of expansion rollers equipped with asterisks, and a worm gearbox with flexible coupling mounted inside the housing, characterized in that it is equipped with an eccentric axis associated with a fixed handle and a sliding tray, while the angle of the slope of the upper inclined surface of the housing is 45 °, the gap between the upper pair is rolled of the rollers is constant and amounts to 0.025 of the distance between the axes of the corresponding pairs of rollers, and the gap between the lower pairs of rollers is adjustable, the flexible connection from the worm gear envelops the sprocket of the lower roller of the upper pair from the outside and passes tangentially to the sprockets between the rolling rollers of the lower pair, the eccentric axis mounted movably in one of the lower rollers to provide clearance adjustment with the possibility of rotation by a locking handle and is the base of rotation of the lower pair roller, the number of sprocket teeth the lower pair is 3.5 times less than the number of teeth of the sprocket of the upper pair, the drawer is configured to provide free access to the lower expansion rollers, the stiffener is located under the pairs of rollers with a slope in the direction of the drawer and is made in the form of a continuous bent sheet.

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