Excitation fluctuation precompressed multi-station compression moulding machine

Abstract

The invention discloses an excitation fluctuation precompressed multi-station compression moulding machine. Compression moulding units (1) are uniformly distributed and connected into a whole and are dragged by an intermittent mechanism (2) to carry out orderly transposition; a precompressed device (6) generates precompression under the compound effect of excitation and fluctuation; and a pressurizing device (7) converts the rotation of the power source into finalized compression moulding. Therefore, the compression moulding machine has the advantages that the machine overcomes the problems that the compression moulding is restricted by stroke and the compression moulding product has internal defects, the mechanical repeatability is uniform and reliable, the power distribution is reasonable and energy-saving, one machine has multifunction, multi-blocks can be generated by being pressed at one time and the compound compression moulding can be carried out.

Description

Technical field [0001] The invention relates to a molding technology, in particular to a molding machine for molding loose materials into block-shaped products. Background technique [0002] The loose material in the natural state is placed in a mold cavity of a certain shape and external pressure is applied to obtain a pre-designed block-shaped product. At present, the commonly used forming methods are mechanical, vibratory or hydraulic, etc., and its machinery and equipment are often found in public publications such as periodicals and magazines related to building materials, such as: "Wall Wall" sponsored by China Building Materials Industry Press Material Innovation and Building Energy Conservation", "Building Blocks and Block Construction" sponsored by China Building Blocks Association, "New Building Materials" sponsored by China New Building Materials Industry Hangzhou Design and Research Institute and other units. However, vibration forming has the phenomenon of grav...

AI Technical Summary

Problems solved by technology

However, vibration forming has the phenomenon of gravity separation and poor compactness; hydraulic forming can make up for the deficiency of vibration forming, but the equipment cost is relatively high; mechanical pressure forming has a simple structure and low cost, but its molded products have single specifications and shapes, and the compression stroke is small. The adjustment is limited and the molding time is short, so the phenomenon of air inclusion, delamination, uneven density and pressure arching is easy to occur inside the pressed object, resulting in internal defects of the molded product

The specification of the Chinese patent "Porous Brick Press" with the application number 98221095.7 proposes a two-time compression scheme, using a stepped "bridge plate", and completing the pre-compression, final pressure, and top pressure at the positions of the three steps of the bridge plate. The operation of bricks; the Chinese patent "A Rotary Brick Press" with application number 00103987.3 also proposes to press each brick adobe twice or more in one pressing cycle, using a "polygonal pressing piston". There are 2N sets of stamping top plates on the surface; obviously, the strength of the initial pressure and the final pressure are very different, and the "bridge plate" and the "polygonal pressing piston" both apply parallel pressure to the materials of different completion states in the adjacent cavity at the same time, which is inevitable. Force imbalance occurs, both of which are static pressure methods, which have no effect on the improvement of dynamic conditions; the specification of the Chinese patent "Turnable Unburned Brick Press" with application number 95239037.X only mentions the track There is no specific plan for preloading. According to the "turntable track expansion diagram" shown, the preloading is linear, the preloading amount is small, and the action time is very short, while the actual characteristics of the material under pressure are curved; the application number is 200620033531.1 The Chinese patent "Eight-hole Disc Rotary Hollow Brick Press" proposes to add vibration at the filling station to reduce the depth of the filling and reduce the final pressure. In fact, it is just "vibrating cloth" and not pre-pressing, which has nothing to do with "reducing the final pressure". And the "vibration pad" and "push mold seat" are difficult to dynamically locate; the Chinese patent "Eight-hole Disk Free-burning Brick Machine" with application number 200620080745.4 has an eccentric wheel instead of a crankshaft mechanism for the brick pressing mechanism, and one end of the "connecting rod" is set On the "eccentric wheel", it is actually just a cam structure, which is used for molding a type of heavy-duty equipment. There will be severe sliding friction between the transmission contact surfaces, and it is necessary to increase the size of the "connecting rod", and the processing of the kinematic pair The difficulty of assembly also increases accordingly

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