SU1004114A1 - Head to radial-pressing tube-moulding machine - Google Patents

Description

The invention relates to the production of precast concrete and reinforced concrete.

Closest to the proposed is the head to the pipe forming. ⁵ radial pressing machine comprising fixed to a lower end of a vertically movable drive shaft * smoothing cylinder, on which the bottom on the vertical axis also mounted eccentrically Rowan ^{1 and} at least one pressing rolikflj.

A disadvantage of the known device is the low durability caused by frequent breakdowns of the head due to 15 falling into the gap between the rollers of individual fractions of coarse aggregate larger than 30 mm, resulting in a sharp decrease in productivity and durability of the forming head. 20

The purpose of the invention is to increase reliability and increase service life.

¹ This goal is achieved by the fact that the head to the radial-pressing tube-forming machine, 25 containing a smoothing cylinder fixed on the lower end of the vertically movable drive shaft, on the bottom of which on the vertical axis at least one compression roller is mounted eccentrically, is equipped with a fixed a casing with emphasis on the outer surface, inside of which the drive shaft is located in the bearings, and the pressing roller is made with a lead fixed on its upper end, in contact with the emphasis, the diameter of glazhivayuschego cylinder exceeds the diameter of the pressing roller on the magnitude of the eccentricity setting of the latter.

In FIG. 1 schematically depicts a head for a tube forming machine for radial pressing, general view; section} in FIG. 2 - the same, top view.

The head to the radial-pressing molding machine consists of a vertically movable drive shaft 1 with a fixed casing 2, the bottom 4 of the smoothing cylinder 5 is fixed on the lower end of the shaft 1 through the hub 3. The axis of the pressing roller 6 is eccentrically mounted in the form of a bronze bushing

7.

The sleeve 7 is closed from above by a cover of '8, and the shaft 1 is placed in the bearings 9 of the fixed casing 2, on the outer surface of which a stop is fixed

10, in contact with a leash 11 mounted on the upper end of the pressing roller 6.

An oil seal 12 is installed at the lower end of the casing 2, preventing the concrete mixture from falling into the gap ³ between the casing 2 and the shaft 1, and the diameter of the smoothing cylinder 5 exceeds the diameter of the pressing roller 6 by the eccentricity of the installation of the latter. · YU

The head to the pipe-forming machine for radial pressing works as follows.

Before forming the pipe, the shaft 1 is lowered into the mold 13, the drive 1 rotates the shaft 1 and the concrete mixture is fed to the head from above, entering the gap between the forming head and the mold 13. The press roller 6 sequentially wraps and compacts the concrete mixture without rotating relative shaft due to the sleeve 7, rotating inside the pressing roller 6. In this case, the latter acts on the concrete mixture in a radial direction 25 without rotation, and the wires 11 makes reciprocating movements on the stop 10, mounted on a fixed casing 2 with an amplitude equal to double the eccentricity of the installation of the roller β, βθ

The smoothing cylinder calibrates the inner surface of the pipe as the head rises up and at the same time smooths it, rotating together with the shaft 1 about

The use of the proposed head to a tube forming machine for radial pressing in the precast and reinforced concrete industry can improve reliability and increase the service life of equipment for the production of tubular products.

Claims (1)

10 in contact with the driver 11 mounted on the upper end of the pressing roller b. A gland 12 is installed at the lower end of the casing 2, which prevents the concrete mixture from entering the gap between the casing 2 and the shaft 1, and the diameter of the smoothing cylinder 5 exceeds the diameter of the pressing roller b by the amount of eccentricity of the latter. The head for the radial extrusion pipe molding machine operates as follows. Before forming the pipe, the shaft 1 is pushed inside the form 13, the shaft 1 is turned on and a concrete mix is fed to the head, which enters the gap between the forming head and the form 13. The pressing roller b sequentially rolls and compacts the concrete mix without rotation of the relative shaft at the expense of the sleeve 7, which rotates inside the pressing roller b, the latter acts on the concrete mix in the radial direction without rotation, and the wiring 11 makes in gate-and-forward movements along the edge 10 fixed on the fixed to the zhukha 2 with an amplitude equal to twice the eccentricity of the roller installation The smoothing cylinder calibrates the inner surface of the pipe as the head rises up and simultaneously smooths it, rotating with the shaft 1. Using the proposed head to the pipe forming machine of radial pressing in the industry of precast concrete and reinforced concrete It increases reliability and extends the service life of tubular manufacturing equipment. Claim head for radial extrusion pipe molding machine comprising a smoothing cylinder fixed on the lower end of a vertically movable drive shaft, on the bottom of which an eccentric at least one pressing roller is mounted on the vertical axis, so as to increase reliability and extend service, it is equipped with a fixed casing with an emphasis on the outer surface, inside which the drive shaft is placed in the bearings, and the pressing roller is made with a fixed Khnemu leash end in contact with the stop, wherein the smoothing cylinder diameter greater than the diameter of the pressing roller on the magnitude of the eccentricity setting of the latter. Sources of information: taken into account during the examination 1. USSR author's certificate i№ 804455, cl. In 28 In 21/24, 1979 (prototype).