Calculation of the main parameters of the "Machine with rotary sealing mechanism" with the design of the turning mechanism

Added: 16.01.2023
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Description

The purpose of the course project is to calculate the forming shaking machine with a turn. For an analogue in the design of the elements of the sieve, the forming shaking machine with the rotation of half-forms 265MZ was adopted. / Composition: 3 sheets drawings (Shaking Forming Machine (SAT), Movement
shaking (SB)) + PZ (44 pages).

Content
Introduction   3
1 Literature review   5
1.1 Shaking forming   process 5
1.2 Classification of shaking molding mechanisms   7
1.2.1 Classification by type of   drive 7
1.2.2 Classification by the nature of the work process   8
1.2.3 Shock   absorption classification 10
1.2.4 Classification by type of air distribution   13
1.3 Nature of the sealing effect on the molding mixture   17
1.3.1 Kinetics of inertial forces at the impact of the shaking table   17
1.3.2 Sealing of the forming mixture by shaking   21
1.3.3 Compressive stress distribution along the height of the form   22
1.3.4 Sealing quality of the forming mixture when shaken   24
1.3.5 Empirical shaking equations   25
2 Description of the shaking molding machine   28
2.1 Characteristics of the shaking molding machine   28
2.2 Features of the process of compaction of the mixture in the manufacture of moulds   30
3 Calculation of the basic design parameters of the rotary mechanism of the shaking molding machine   33
3.1 Determination of weight parameters   33
3.2 Determination of the main design parameters of the shaking mechanism   34
3.3. Defining Basic Parameters   37
3.4. Foundation Calculation   38
Conclusion   42
References   43
Annexes and specifications   44

Shaking machines are used mainly for the manufacture of molds in high rims. Compaction of the mixture occurs due to shaking, which occurs when the table of the machine with the plate fixed on it and the rim on the bed of the machine hits it. The table of the machine under the action of compressed air entering the cylinder of the machine rises to a height of 30 ... 100 mm and then under the influence of gravity falls, hitting the bed. In this case, the mixture is compacted. The seal depends on the power of the impact and the number of impacts (usually 30... 50 per minute). On machines of this type, it is possible to produce sandy-clay forms weighing from 100 kg to 40 tons, the productivity of the machines is up to 15 large forms per hour.
On shaking machines, the compaction of the molding mixture in the opok occurs unevenly: the lower layers are denser, the upper ones are less. To eliminate this drawback, shaking machines are used with additional pressing of the upper layers of the mold. In this case, the density distribution of the mixture is more even.
Shaking molding machines are considered universal, as they are used to shake half-forms weighing from 100 kg to 40 tons.