SU72425A1 - Vibrostrap forming machine for forming building blocks - Google Patents

Description

The proposed vibrating machine (Fig. 1-5) consists of a conventional mold 7 mounted on a clamping swivel arm 4 pivoted about the axis O-O. At the opposite end of the lever 4 is installed vibrator 6.

Form 7 with the pivot arm 4 is connected by spring-loaded rods 7 and 5. The regulation of the amplitude of the oscillations of the form is achieved by appropriate tightening of the nuts at the lower ends of the rods.

The position of the machine at rest is shown schematically in FIG. 1. Form 7 by the strikers 2 rests on the anvil 3. The lever 4 with the vibrator 6 mounted on the free end is connected with the other end of the hinge on the axis O and is kept from falling by spring-loaded rods.

When the vibrator 6 rotates, the horizontal forces developed by it are absorbed by the reaction of the axis O, and thus the lever 4 gets the opportunity to go only in the vertical direction (within small angles of movement).

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The mass from the hopper installed above the machine through the sector gate enters the form 7, into which the lining is pre-laid.

The operation of the vibration system proceeds in the following order.

When the inertial force of the vibrator 6 is directed upwards (Fig. 5), the lever 4, abutted by the impactors 9 on the anvil of the form 7, lifts it from the anvil 3, as a result of which there is a gap between the impactor 2 and the anvil 3.

When the inertial force of the vibrator 6 is directed downwards (Fig. 2), the lever 4 also tends to move downward, as a result of which the form 7 strikes the impactor 2 into the anvil 3. With the continued movement of the lever 4 downward, a gap is formed between the impactors 9 and the anvil of form 7, which is followed by rotation the latter, due to the increased tension of the spring of the rod 7, relative to the spring of the rod 8.

Upon further rotation of the vibrator 6, the downwardly directed inertia force decreases, as a result of which the lever 4 under the action of the elasticity of the spring of the rod 7 and the spring of the rod 8 will tend to move upwards. Form 1 receives two consecutive blows: to the left corner, accompanied by turning the molding box to the right (Fig. 3), and to the right corner, accompanied by lifting form 1 over the anvil 3. After that, lever 4 begins to move down and the cycle repeats.

Thus, for 1 revolution of the shaft of the vibrator 6, form 1 receives three shock pulses: one downward and two upward, also accompanied by horizontal oscillations with increasing amplitude along the height of the form, which compensates for the effect of hydrostatic pressure on the sealing effect and contributes more uniform draft of the mass over the entire height of the form. Thus, when the motor is turned on, the mass, under the influence of shock oscillations, intensively condenses in shape. As it precipitates, fresh mass is added to form 7.

After cessation of the mass, which indicates that the unit is ready, a worker with two or three strokes of the metal trowel 5 finally compacts the top layer and cuts off its excess to the feeding table 10 with a trowel edge. After that

the finished blocks are pushed out of the molds in the usual way, new liners are put into the molds, and the cycle is repeated.

The proposed machine can be made with two forms. In this case, the second form is mounted on its pivot arm with a free end facing the first one and set in motion by the common vibrator.

Pre-invention

Claims (2)

1. A vibrating machine for molding building blocks, in which the vibrating device is made in the form of a lever that swings on a horizontal axis and is provided with hammers interacting with anvils associated with a mold, characterized in that mold 7 is mounted on a swinging lever 4, movable along the spring-loaded rods 7 and 5, mounted on the lever 4, and provided with additional impactors 2 interacting with the fixed anvils 3. 2. The machine according to claim 1, characterized in that the two levers 4 with the forms 7 fixed to them are disposed towards each other with free ends on which a vibrator 6 common to both levers is mounted. FIG. I  A / f FIG. 2 cl FIG. 3 E: ± §iFig. four