Three-dimensional dough kneading mechanism

FIELD: mechanical engineering, in particular, mechanisms used in food-processing industry.

SUBSTANCE: three-dimensional dough kneading mechanism has reciprocating hydraulic cylinder and dough kneading shovel. Piston with hydraulic cylinder stem is made integral with corner lever making part, in conjunction with column and three-dimensional yoke, of cylindrical kinematic pair (forth class). Three-dimensional yoke is rigidly connected with shovel of dough kneading mechanism and joined to column through spherical kinematic pair (third class).

EFFECT: improved quality of dough mixing and simplified construction of mechanism.

 

The invention relates to the field of engineering, and specifically to mechanisms used in the food industry.

Known articulated lever mechanism agitators, including kneader [1, str, mechanism No. 886], in which the agitator is slipping on the bottom of the spherical bowl. The disadvantage of this mechanism is the necessity of using two drives: drive for movement of the blade and the drive for rotation of the bowl.

Closest to the proposed mechanism is a four-hinge mechanism kneader [1, str, mechanism No. 909], in which points paws agitators move along specific trajectories inside the bowl (vessel with the test). However, this mechanism has a significant disadvantage in that the paw stirrers can move only in one plane, namely the plane of rotation of the drive crank.

The present invention is the elimination of the marked disadvantage that is achieved by the fact that the paw of masiki set of spatial movement inside the bowl (vessel with the test).

The essence of the proposed spatial mixing mechanism is that features three spatial mixing mechanism comprising a hydraulic cylinder reciprocating and dough paw, in which the driving element in the form of a piston with stoko the cylinder is in one piece with angled lever, included with the stand and spatial rocker in the cylindrical kinematic pair (fourth grade), and spatial beam, rigidly United with paw mixing mechanism, connected to the counter through a spherical kinematic pair (third class).

General view of the proposed spatial mixing mechanism shown in the drawing.

The drive mechanism consists of a cylinder 1 with a piston 2, made in one piece with the angled lever 3 through a rigid connection 4. The angle lever 3 comes with a rack in the cylindrical kinematic pair (a pair of fourth grade) 5 and with a spatial rocker 6 in the cylindrical kinematic pair 9 (a pair of fourth grade) 7. Spatial rocker arm 6 is rigidly connected with the paw testamentes 8, which mixes the dough in the bowl (vessel test) 9, are connected with a rack through a spherical kinematic pair (a pair of third class) 10.

The mechanism works as follows. When applying the operating agent (liquid) in the piston, and then in the rod end of the hydraulic cylinder 1 piston rod 2 will receive a reciprocating motion through a rigid connection 4 stem with angle lever 3 will transmit the motion (angular lever), which begins to move relative to the axis of the cylindrical kinematic is 5 pairs. When this angular lever together with the rod and the piston 2 of the cylinder 1 will receive an additional rotational movement around the geometric axis of the cylinder. From the corner of the lever 3 through the cylindrical kinematic pair 7 will receive the spatial movement of the rocker arm 6, and with it's paw testamentes 8.

Since the spatial rocker 6 is connected to the rack through a spherical kinematic pair 10, and spatial rocker 6 and paw 8 will receive spatial movement and the paw 8 in the bowl 9 is to mix the dough in all directions.

It is known that the mobility of spatial mechanisms is determined by the formula Malysheva A.P., having the form [2, p.35, formula (2, 4)]

In this formula W means how many links should be set to the motion to all other units move quite definitely;

n is the number of moving parts;

p5, R4, R3, R2p1the number of kinematic pairs, respectively:

p5fifth class (odnopodezdny), R4fourth class (dvukhyadernye), R3- third class (trichodynia), R2- second class (chetyrekhyadernye) p1- first class (platypodinae).

In the proposed mechanism, the number of moving links of the two is the angle lever 3, made in one piece with the piston guide is cilindro 1, and spatial rocker 6 together with the paw 8, i.e. n=2, and kinematic pairs only three are two cylindrical pair of fourth grade angle between the lever 3 with stand (pair 5) and with a spatial rocker 6 (pair 7), and spatial beam 6 with stand (pair 10), i.e., R4=2, p3=1.

By the formula (1) according to the above mentioned values get

W=62-42-31=1.

It follows that the proposed spatial mixing mechanism is fully functional.

Sources of information

1. II Artobolevsky I.I. Mechanisms of modern technology, vol 1. - M.: Mashinostroenie, 1970.

2. II Artobolevsky I.I. Theory of mechanisms and machines. - M.: Nauka, 1975. 640 S.

Spatial mixing mechanism consisting of a cylinder reciprocating and dough feet, while the piston rod of the cylinder is made in one piece with the angled lever included with the stand and spatial rocker in the cylindrical kinematic pair (fourth grade), and spatial beam, rigidly United with paw mixing mechanism, connected to the counter through a spherical kinematic pair (third class).



 

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