RU2043922C1 - Form for manufacturing reinforced concrete articles - Google Patents

Abstract

FIELD: production of prefabricated concrete and reinforced concrete articles, with rectangular or dovetail slots on surface facing the pan of form and provided by hole forming core on pan surface. SUBSTANCE: form has pan, hinged down sides, slot-forming core folding inwards and consisting of components with hinge joints, spacer member with posts on hinge joint coupled with hinge joint in center of hole-forming core. Each post, together with one of tie-rods coupled with sides and fitted on axle with guide bushing, forms one sliding support. EFFECT: enlarged operating capabilities. 3 cl, 3 dwg

Description

 The invention relates to technological equipment for the production of precast concrete and reinforced concrete, in particular to the manufacture of products having a groove, for example, rectangular or a type of dovetail, on the surface facing the pallet of the form formed by a groove located on the surface of the pallet.

A known form for the manufacture of reinforced concrete products, consisting of a pallet, articulated longitudinal and end walls, elastic hollow formers and the mechanism for their movement and fixation [1]
The disadvantage of this form is the complexity of the mechanism for moving and fixing the hollow formers, the possibility of manufacturing only through separate holes.

A known form for the manufacture of reinforced concrete products containing a pallet with hinged sides mounted on it and a hollow core, consisting of two pivotally interconnected turning parts [2]
The disadvantage of this form is that the complex design of the core former makes it difficult to form the mold.

 The objective of the invention is to simplify the design of the mold and reduce the complexity when dismantling it.

 In FIG. 1 shows a mold for the manufacture of reinforced concrete products with closed sides and a molded product, general view; in FIG. 2 the same, with the sides open; in FIG. 3, section AA in FIG. 2.

 The mold for the manufacture of reinforced concrete products contains a pallet 1, folding flanges 2, a groove-shaped hollow core forming inside, consisting of components 3 on hinged joints 4, a spacer element with posts 5 and 6 on the hinge 7, structurally connected to the hinge 4 in the center of the core. Each of the racks 5 and 6, together with one of the rods 8 or 9, articulated with the sides 2, respectively mounted on one of the axles 10 with the guide sleeve 11 and the rollers 12, forms one sliding support.

 Racks 5 and 6 of the spacer element can be with rollers 12 and connected to rods 8 and 9, articulated with opposite sides 2.

 The rollers 12 of the uprights 5 and 6 of the spacer element may have limiters 13 preventing them from tearing off the base 16.

 The swivel joints of the core former may have thin elastic band linings 15 attached to one side of the swivel joint to prevent the liquid phase from leaking out of the concrete mixture.

 The form works as follows.

 After installing the mold with the finished product on the stripping post, the sides 2 are opened, while the rod 9 pushes the rack 6 from itself, as a result of which the racks 5 and 6 slide on the rollers 12 in different directions, unfastening and lowering the hinge 7, which carries away a hollow core, which under the action of a hinge and its own weight falls inside the hollow core onto the surface of the pallet 1, successively tearing off the component parts 3 from the surface of the groove of the product 14 and providing an appropriate formwork clearance that protects the gra not from chipping.

 For mounting loops on one of the sides, the product is removed from the pallet 1. The form is cleaned and the sides 2 are closed, while the rod 9 pulls the rack 6 and the rod 8 the rack 5. Both racks 5 and 6 slide on the rollers towards each other, lifting the hinge 7, which raises the hollow core from the components 3 on the hinge joints 4, interconnected with the pallet 1. When the sides 2 are completely closed, the initial position of the core core is fixed, fixed by the side locks. Then the mold is lubricated, the mold is filled with concrete, and heat treatment is performed. After heat treatment and removing the mold from the chamber, the stripping is carried out and the cycle repeats.

 The use of the mold will make it possible to manufacture products without chipping the edges of the groove of both a rectangular shape and a dovetail type due to the presence of a stripping gap between the core and the product before it is removed from the pallet. The presence of the stripping clearance allows the use of appropriate linings, for example, to form a groove like a dovetail.

 The design of the hollow core and the mechanism for bringing it into action provide not instant separation from the body of the product over the entire groove area, but sequential from the center to the side faces. The ability to use the dead weight of the hollow former both to tear off the product body and to facilitate opening the sides of the mold significantly reduces the complexity of the formwork.

Claims (3)

 1. FORM FOR THE PRODUCTION OF REINFORCED CONCRETE PRODUCTS, comprising a pallet, folding sides, a hollow core, consisting of two pivotally connected rotary parts, and an expansion device, characterized in that each rotary portion of the hollow core is made up of two pivotally connected elements, one of which is pivotally attached to the pallet, and the spacer element is made in the form of racks, one ends of which are pivotally connected to each other and the hollow core, and the other ends movably with rods connected and the beads.  2. The mold according to claim 1, characterized in that the racks are equipped with rollers and are connected to rods of opposite sides.  3. The mold according to claim 2, characterized in that the rollers have limiters that prevent them from tearing off the base of the pallet.

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