CN205329724U - Reinforcing bar reinforcing thermoplasticity pressing - Google Patents

Abstract

The utility model relates to a reinforcing bar reinforcing thermoplasticity pressing, the inside orthogonal anisotropy framework of steel reinforcement that is aided with of goods strengthens, and inside rebar positioning mechanism realizes the advantage that is showing that the reinforcing bar cladding is complete, it is even to control, it is accurate to fix a position, thickness is controllable through the mould. Defect such as can solve effectively that the inside reinforcing bar cladding effect of traditional combined material product is poor, positioning deformation, clad material are extravagant, solution BMC material that especially can be fine is breakable to exchange cracked problem. Be particularly useful for the well lid, protect municipal works goods such as tree board, leaf grating for down pipe.

Description

A kind of reinforcing bar strengthens thermoplasticity pressing

Technical field

This utility model relates to a kind of thermoplasticity pressing, and especially a kind of reinforcing bar strengthens thermoplasticity pressing。

Technical background

Along with the propelling of social development and urbanization process, the municipal works product such as well lid, tree guard, leaf grating for down pipe finds broad application in urban planning, road construction, such as public utilities such as tap water, telecommunication power, combustion gas heating power, fire-fighting environmental sanitation。Municipal works product early stage based on armored concrete material, but because of its quality weight, not easy working defect, replaced by cast iron quality gradually；In recent years, because cast iron possesses recovery value, large-tonnage product is caused to steal disappearance and cause security incident。At present, the composite that market is representative with staple glass fibre and unsaturated polyester resin (being called for short BMC), the product solidifying to form through mould heat pressure increases gradually。It is characterized in that: simple BMC bearing capacity is inadequate, and product in use broken easy fracture, need to add framework of steel reinforcement as enhancing。It is aided with framework of steel reinforcement inside traditional BMC combined manhole cover to strengthen, it is usually present three obvious shortcomings: 1) it is previously placed in mould cavity bottom due to framework of steel reinforcement, when compacting, BMC is difficult to be coated with reinforcing bar completely, causes reinforcing steel bars exposed, and producing rusty stain affects serviceability；2) composite and reinforcing bar are subjected to bigger pressure when mould matched moulds, and reinforcing bar can occur skew even to deform in the process, cause that the material uneven or reinforcing bar back bending of cladding produces the stress deformation of product；3) reinforcing bar produces random movement with the increase of clamping pressure in mould, adopts traditional BMC cladding reinforcing steel bar technique, needs bigger width surplus to guarantee that material can complete cladding reinforcing steel bar in structural design。Therefore, this technique exists and is coated with raw-material waste, and the built-in built-in fitting of product cannot the problem such as location comparatively accurately。Chinese patent CN104099949A, discloses a kind of ductile cast iron manhole cover and preparation method thereof, adopts V method mould structure, reduces design and difficulty of processing, but cannot thoroughly solve this material and steal disappearance drawback。Additionally, silicon molding product adopts thermoplastic matrix, it is aided with the mold pressing of each cheap filling mixture and makes。Bigger cooling meat rate is there is in this product due to base material, and about 2～2.6%, strengthen according to framework of steel reinforcement, there is bigger gap and cause product gross distortion in the shrinkage factor between reinforcing bar and base material, therefore cannot realize framework of steel reinforcement at interiors of products and strengthen。

In sum, conventional steel bar concrete material quality weighs, not easily constructs；Irony product is easily lost cause the accident because of pilferage problem；Then there is broken easy fracture in composite thermoset articles；Silicon molding product is big because of base material shrinkage factor, it is impossible to is aided with reinforcing bar in inside and strengthens。These many defects existed in the application, are never solved very well。Developing the municipal works product of a kind of new material, the great number of issues solving the existence of above-mentioned traditional material is that current institute needs the urgent problems solved。

Summary of the invention

The purpose of this utility model is: provide a kind of reinforcing bar to strengthen the products such as thermoplasticity pressing, particularly well lid, tree guard, leaf grating for down pipe。It has the beneficial effects that, utilizes the municipal works product that the thermoplastic of Stainless-steel fibre produces, and compared with other material products, has the advantages such as good toughness, light weight, easily construction, bearing capacity are strong；Can effectively solve the defects such as conventional composite materials interiors of products reinforcing bar covered effect is poor, positioning deforms, cladding waste of material, the problem that especially can solve the frangible easy fracture of BMC。

This utility model is realize the technical scheme that above-mentioned technical purpose adopts: as shown in figures 1-4, a kind of reinforcing bar strengthens thermoplasticity pressing, with thermoplastic composite fibre such as PP, PE for substrate layer, through broken mixing, add heat fusing, metering is weighed, compression molding, cooling and shaping, deburring decoration production obtain product, specifically includes following steps:Step one,Broken mixing: block stock bigger for book size is sent into pulverizer and carries out Mechanical Crushing, obtain length 2～30mm, width 1～20mm base material；Step 2,Add heat fusing: prepared base material is sent into extruder or multi-daylight press is heated melting, make base material possess certain flowing and ductility。Hot melting temperature 120 DEG C～280 DEG C；Step 3,Metering is weighed: weigh appropriate base material, raw material density 1.2～1.4g/cm according to product small product size and raw material ratio³；Step 4,Compression molding:

Base material under molten condition is sent into mould, and mould inside is placed and is strengthened skeleton, and the municipal works product that compression molding obtains, the municipal works product that compression molding obtains, its surface is optionally with three-dimensional decorative property decorative pattern or art pattern。Briquetting pressure 5Mpa～25Mpa, dwell time 30s～720s；Step 5,Cooling and shaping: the idiosome of compression molding in step 4 is put into special bosher and puts into row cooling and shaping and process, according to product thickness and book size, cool time 1min～120min, cooling pressure 3～800T；Step 6,Sanding deburring: goods complete for cooling and shaping are carried out sanding and removes its edge flash, overlap so that it is smooth surface is easy to the decoration colouring in later stage；Step 7,Incrustation: the goods after deburring first do surface treatment with thermoplastic transparent priming, then product surface are done paint for decoration, it is possible to be ceramic paint, acrylic acid floor paint, aqueous environment protection paint etc.。

Described step one is characterized in that: thermoplastic matrix self contains glass fibre or raw material is mixed into appropriate glass fibre, mass fraction 5～50%, glass fibre length 2～60mm after crushing。

Described step 4 is characterized in that: top mold surface arranges three-dimensional pattern or depiction, and lower mold arranges Orthotropic Structures groove, and upper and lower mould passes through guide-localization mechanism matched moulds。Of the present utility model being characterized in that in lower mold die cavity distribution has crisscross groove, and be provided with reinforcing bar location structure in groove, slot in this reinforcing bar location structure lower end, upper/lower die chrome-faced；

Described lower mold Orthotropic Structures groove can be U-shaped or one or both of V-type。

Described reinforcing bar location structure can be one or more of spaced set or unequal-interval setting。

Described reinforcing bar location structure can be U-shaped or one or both of V-type。

Described lower mold Orthotropic Structures well width is 6～50mm。

Described lower mold Orthotropic Structures groove 3 degree of depth is 5～70mm。

Described reinforcing bar location structure A/F is 4～32mm。

Described reinforcing bar location structure lower end groove width is 2～26mm。

Described reinforcing bar location structure lower end groove depth is 2～45mm。

Described enhancing orthotropy framework of steel reinforcement diameter is φ 4～φ 36mm。

In groove, reinforcing bar location structure realizes being accurately positioned of embedded bar, and groove width and the difference of bar diameter realize fixed thickness cladding, are coated with material thickness range 2～45mm。Reinforcing bar location structure lower end conduction trough width guarantees the flowing of material and passes through, it is achieved reinforcing bar is coated with completely, and substrate layer upper surface obtains with three-dimensional pattern or art pattern, and substrate layer lower surface correspondence orthotropy framework of steel reinforcement is with U-shaped projection。

In sum, a kind of reinforcing bar that this utility model provides strengthens thermoplasticity pressing, solve the shrinkage factor difference between thermoplastic matrix and reinforcing steel bar skeleton, guarantee that product size is stable, and solution framework of steel reinforcement is being accurately positioned with the embedded bar in the Overmolded process of raw material, thickness determined by cladding material is innovation of the present utility model, put into substantial amounts of manpower, material resources, this technique is this utility model people long-term research practice in municipal works article processing techniques field, and the one explored in conjunction with the deficiencies in the prior art can be effectively improved product mechanical property, save material, it is made to meet the inventive result of actual production and application。

Compared with the manufacture method of existing conventional articles, advantage of the present utility model is specific as follows:

1) thermoplastic that it is representative with PP, PE mixing glass that raw material is selected, its good toughness, light weight, solve conventional municipal engineering goods fragility greatly, the shortcoming of easy fracture；2) selecting thermoplastic, pressing, without recovery value, solves loss and safety problem that conventional municipal engineering goods cause because stealing disappearance root, saves manufacturing cost；3) this utility model adds the substrate layer of glass fiber component in the feed, can effectively solve the problem that the technical barrier that shrinkage factor that thermoplastic matrix's sheet material layers exists in cooling and shaping process is big, make the framework of steel reinforcement of Orthotropic Structures be applied in thermoplastic and not be deformed；4) reinforcing bar described in the utility model strengthens thermoplasticity pressing mould, the defects such as reinforcing bar covered effect is poor, positioning deformation, cladding waste of material that conventional composite materials reinforcing bar cladding exists can be effectively solved, it is achieved the remarkable advantage that reinforcing bar cladding is complete, left and right is uniform, accurate positioning, thickness are controlled by mould positioning mechanism；5) this utility model can be achieved by the waste and old thermoplastic material of recovery, it might even be possible to is processed remaining solid waste by automobile industry and obtains, it is achieved that the recycling utilization of industrial resources, meets the macro policy of country and following main trend developing direction。

Therefore, joining with thermoplastic that this utility model provides is aided with the goods that steel fibre skeleton pattern is molded, breach selection and the structure of conventional articles, there is the advantages such as good toughness, light weight, easy construction, bearing capacity be strong, there is very vast potential for future development and good economic and social profit。

Accompanying drawing explanation

Fig. 1 is goods transverse cross-sectional view in this utility model。

Fig. 2 is goods longitudinal sectional drawing in this utility model。

Fig. 3 is upper die structure figure。

Fig. 4 is lower die structure figure。

Detailed description of the invention

Below in conjunction with embodiment, this utility model is described in further detail, it should be pointed out that embodiment described below is intended to be easy to understanding of the present utility model, and it does not play any restriction effect。

Embodiment:As shown in figures 1-4, a kind of reinforcing bar strengthens thermoplasticity pressing to justify well, and surface has ornamental decorative pattern, and it is as follows that it manufactures process:Step one,Mechanical Crushing: block stock bigger for book size is sent into pulverizer and crushes, obtain length 3～16mm, width 4～12mm base material, glass fiber content 25%, Length of Glass Fiber 10～25mm；Step 2,Metering is weighed: the base material after weighing is sent into extruder or multi-daylight press is heated melting, make base material possess certain mobility。Between hot melting temperature 120 DEG C～140 DEG C；Step 3,Add heat fusing: according to well lid size, weigh 17kg base material；Step 4,Compression molding: the base material under molten condition is sent into mould, mould inside is placed Orthotropy shape structure and is strengthened skeleton。Compression molding obtains well lid, and its surface is optionally with three-dimensional decorative property decorative pattern。Selecting reinforcing bar 7 to do enhancing skeleton, specification is φ 14, briquetting pressure 15Mpa～20Mpa, dwell time 160s herein；Step 5,Cooling and shaping: the idiosome of compression molding in step 4 is put into fixing cooling frock and does cooling and shaping and process, according to product thickness and book size, cool time 30min；Step 6,Sanding deburring: goods complete for cooling and shaping are carried out sanding and removes its edge flash, overlap so that it is smooth surface is easy to the decoration colouring in later stage；Step 7,Incrustation: the goods after deburring first do surface treatment with thermoplastic transparent priming, then product surface are done paint for decoration, it is possible to be ceramic paint, acrylic acid floor paint, aqueous environment protection paint etc.。

In described step 4, lower mold arranges Orthotropic Structures groove 3, and mold 1, lower mold 4 are by the 2-in-1 mould of guide-localization mechanism。In lower mold 4 die cavity, distribution has crisscross structure grooves 3, and is provided with reinforcing bar location structure 5 in structure grooves 3, and this reinforcing bar location structure 5 lower end convinces groove, mold 1, lower mold 4 chrome-faced by patient analysis。

Described lower mold 4 Orthotropic Structures groove 3 is U-shaped。

Described reinforcing bar location structure 5 spacing is that the quartering is arranged。

Described reinforcing bar location structure 5 can be U-shaped。

Described enhancement Layer reinforcing bar 7 diameter 10mm。

The width 26mm of described Orthotropic Structures groove 3。

The degree of depth 30mm of described Orthotropic Structures groove 3。

Reinforcing bar location structure 5 A/F 11mm in described groove。

Reinforcing bar location structure 5 lower end conduction trough width 6mm in described groove。

In the process; reinforcing bar location structure 5 in structure grooves 3 realizes being accurately positioned of embedded bar 7; the difference of structure grooves 3 width and reinforcing bar 7 diameter is 16mm; realize reinforcing bar 7 and be coated with base material 6 thickness 8mm; reinforcing bar location structure 5 lower end conduction trough width guarantees the flowing of base material 6 and passes through, it is achieved reinforcing bar 7 is coated with completely。

According to above-mentioned data, can obtaining a kind of diameter 10mm reinforcing bar 7, to be coated with base material thickness be 8mm, and substrate layer 6 upper surface 8 is with space pattern, and the corresponding orthotropy framework of steel reinforcement position of substrate layer 6 lower surface 9 strengthens thermoplasticity moulded well covers with the reinforcing bar of U-shaped projection。

The technical solution of the utility model has been described in detail by embodiment described above; it it should be understood that and the foregoing is only specific embodiment of the utility model; it is not limited to this utility model; all make in spirit of the present utility model any amendment, supplement or similar fashion replacement etc., should be included within protection domain of the present utility model。

Claims (5)

1. a reinforcing bar strengthens thermoplasticity pressing, including substrate layer (6) and reinforcement (7), it is characterized in that: described substrate layer (6) is thermoplastic mixing glass fiber material layer, and described reinforcement (7) is orthotropy framework of steel reinforcement, arranges reinforcement (7) in substrate layer (6)。

2. a kind of reinforcing bar according to claim 1 strengthens thermoplasticity pressing, it is characterised in that: described substrate layer (6) glass Length of Glass Fiber 2～60mm。

3. a kind of reinforcing bar according to claim 1 strengthens thermoplasticity pressing, it is characterised in that: described substrate layer lower surface (9) is U-shaped with internal stiffeners (7) correspondence position band or taper projection。

4. a kind of reinforcing bar according to claim 3 strengthens thermoplasticity pressing, it is characterised in that: described orthotropy framework of steel reinforcement can be spaced set or unequal-interval setting。

5. a kind of reinforcing bar according to claim 1 or 3 strengthens thermoplasticity pressing, it is characterised in that: the cladding thickness range 2～45mm of described substrate layer (6) and reinforcement (7)。