CN2296385Y - Forwork - Google Patents

Abstract

The utility model discloses a building template, belonging to a template used for pouring concrete structure. A supporting mechanism of the template is provided with a working face. The utility model is characterized in that the working face and the supporting mechanism are made of plastic via integral molding, and the supporting mechanism forms a cancellate shape.

Description

Template

The utility model is about the improvement to template.

Template is used as the encasement of fluid concrete in builing industry.Traditional template is normally manufactured with laminate.That laminate has is smooth, consistent size, be easy to advantages and inexpensive such as machine-shaping at the scene.But laminate also has its shortcoming.Timber becoming day by day rare commodity and the price of laminate also in rapid rising.And laminate has the possibility that absorbs employed water and chemical agent in the concrete.This hygroscopicity connection exposes distortion and the distortion that the dry run that takes place has in the sun caused laminate to the open air with it.Thereby laminate can only use just necessary then the destruction 4～5 times.Destroy laminate and normally at the construction field (site) it is burnt, so just caused pollution.For guaranteeing that concrete can not make pollution more serious with the laminate bonding to the lubricant method that work plane adopts.

With metal form substituted layer pressing plate template is possible.But metal form price height, weight is big, is difficult in on-site cutting and becomes required shape.Although in large-scale construction engineering such as highrise building, metal form has obtained effective utilization, and metal form is unpractical in less complex engineering.

These problems have been impelled of the present utility model finishing just, the purpose of this utility model be to propose a kind of be out of shape little, cost is low and the template of long service life.

The utility model proposes a kind of template that is used for the concrete structure cast, this template has a work plane on supporting device, it is characterized in that, and the plastic monoblock moulding of work plane and supporting device, and also described supporting device is latticed.

Embodiment of the present utility model will be by example and is only described with reference to the accompanying drawing behind the literary composition, in these figure

Fig. 1 is the plan view of a template consistent with the utility model;

Fig. 2 is the rear view of template;

Fig. 3 is the sectional drawing along A-A line among Fig. 2; And

Fig. 4 is the sectional drawing along B-B line among Fig. 2.

The template of the utility model research object is made of plastic.Certainly the numerous species plastics all can be used to the production template, and production technology is also different because of the difference of selecting plastics kind for use.Template is made with waste plastics in a preferred embodiment.To be 80% industrial waste plastics mix with 20% life waste plastics preferred proportioning mutually.The industry waste plastics is meant the obsolete material of resins plants and plastic products factory.These waste materials are fine quality often, and very clean, almost need not anticipate before using.This class waste material is usually with the block or broken sheet form supply of material.

Life waste plastics is employed those plastic products of customer such as plastic containers, packaging material etc., and this class waste plastics can obtain from the mechanism that reclaims junk.This waste plastics often is very dirty, need carry out purified treatment before using.

Although wish in a preferred embodiment and can use waste plastics in 100% ground, template certainly also may be with the compound manufacturing of new plastic raw materials or waste plastics and new raw material.The use proportioning that is used for the template plastics in a preferred proportioning mode is that 80%HDPE (high density polyethylene (HDPE)) adds 20% PP (polypropylene).Do not comprise additive in the proportioning number.Certainly this cooperation ratio is transformable.For example HDPE can mix with the LDPE (low density polyethylene (LDPE)) of certain percentage.PVC not hard to imagine (polyvinyl chloride), BOPP, PET and other many known plastics persons can be used in the batching.

Plate 10 shown in Fig. 1～Fig. 4 is to make with a kind of technology that combines with compact technique of will injecting.Plastic raw materials is expelled to (not shown) in the mould of a semi-closed.After raw material injected mould, a piston (not shown) produced high pressure with the plastics in mold closure and the compression molding.

This hybrid-type processing method is especially effective to large-sized product, need not expensive injection mould equipment because it can use higher molding pressure.

Template 10 in the preferred embodiment shown in Fig. 1～Fig. 4 has work plane 11 and as the back side 12 of the fenestral fabric of supporting device.Template 10 is made into 4 square feet in size.The back side 12 is made up of the blockage 13 of a series of different sizes, and these blockages 13 comprise round the littler blockage of the periphery 14 of plate.The square celluar tissue that fenestral fabric forms provides template required strength and stiffness.The work plane 11 of structure can be smooth flat surface, so that concrete structure can have smooth surface layer.The latticed back side 12 just guarantees the comprehensive strength of template.Template 10 can have the edge 16 at band oblique angle at its back side 12 as shown in Figure 4, and as Fig. 2～shown in Figure 4, blockage 13 is of different sizes, bigger square 18 be substantially center arrangement around template 10 in four square zones 19,20,21,22, less square 17 is arranged around the edge 14 of template.

Template described above has many advantages.It is made with waste material, thereby helps environment, and it has effectively utilized waste material, and not so these waste materials are just may be in the soot processed falls.Template can cut to required size easily at the scene, and its weight is light and have as the needed intensity of concrete encasement.Need not to apply sliding agent at working surface, plastics also can not absorb chemical agent and the moisture in the concrete.Thereby expanding in use appears in template and/or the possibility of being out of shape is just very little, can reuse.

This template can be strengthened with glass fiber or other suitable reinforcing agents such as calcium carbonate.Though preferred embodiment has been showed the template with latticed back side, very natural template can also be made many other shapes and structure, as long as they have and are enough to support concrete mechanical performance.Plastic formwork recited above can tolerate water and the chemical agent in the concrete, can not be out of shape and reduce mechanical performance.Working surface can keep good state, thereby has long application life.Formwork structure should be designed to have high hot strength with bear at the scene fall knock and construct in the abrasion and the damage that are subjected to.Another advantage of this template is that it is capable of washing, can clean at an easy rate again and use.Plastic formwork still is the termite-proof material, and this also can increase the application life of template.

Because template is made with waste plastics, after it finishes its mission, can reclaim again and make new template, can also be used for other plastic products.

At last, template can be can not be dull and stereotyped also.It also can make the moulding that semicircle is used for circular pillar.

Claims (1)

1, a kind of template that is used for the concrete structure cast, this template (10) has a work plane (11) on supporting device (12), it is characterized in that work plane (11) and supporting device (12) are to use the plastic monoblock moulding, and described supporting device (12) is latticed.