CN202493802U - Corrugated tube with hollow nailheads - Google Patents

Abstract

The utility model relates to a corrugated tube with hollow nailheads. According to the corrugated tube, the strength of large-diameter corrugated tubes can be effectively improved, the weight of large-diameter corrugated tubes can be reduced, and materials of large-diameter corrugated tubes can be saved. A plurality of T-shaped nailheads are distributed on wall surfaces of hollow tube cores, plastic layers are compounded on the inner walls and the outer walls of the hollow tube cores with T-shaped nailheads, hollow tube cores with compounded plastic layers are overlaid in a spiral mode to form the corrugated tube, and spiral tube walls which forms the corrugated tube are connected in a melting and sealing mode. The corrugated tube has the advantages that firstly, a precedent of single-wall hollow nailhead corrugated tubes is created; secondly, the strength of large-diameter corrugated tubes can be effectively improved, the weight of large-diameter corrugated tubes can be reduced, and materials of large-diameter corrugated tubes can be shortened; and thirdly, T-shaped nailheads on metal tube core surfaces or on non-metal tube core surfaces can fix plastic layers, plastic layers and metal tube core surfaces or on non-metal tube core surfaces are firmly connected into a whole, a layering phenomenon of the corrugated tube during usage is avoided, and the compressive strength of plastic layers is improved.

Description

A kind of SEMITUBULAR RIVET head bellows

Technical field

The utility model relates to a kind ofly can improve heavy caliber bellows intensity effectively, can alleviate heavy caliber bellows weight again, can reduce a kind of SEMITUBULAR RIVET head bellows of heavy caliber bellows material simultaneously again, belongs to bellows and makes the field.

Background technique

CN201731192U, title " large-caliber double-wall ripple water pipe ", its tube wall constitutes by the inside and outside is two-layer, and its inner tubal wall is smooth, and outer tube wall is trapezoidal corrugated, is provided with stirrup in the cavity between the inside and outside wall, and connects as one at outer wall trapezoidal bottom groove and inwall.Be provided with stirrup in the cavity between this large-caliber double-wall ripple water pipe inside and outside wall; Improved the intensity of water pipe; Compare with the large-diameter steel-plastic waste pipe that generally uses in the existing technology and to have that overall weight is light, cost is low, easy to install and characteristics that cost of production is low.Its deficiency: because the tube wall of bellows is made up of inner and outer wall, the compressive strength of its inwall strengthens through outer wall, and not only weight is big, and raw materials consumption is big, and compressive strength is uneven.

The model utility content

Purpose of design: avoid the deficiency in the background technique, design and a kind ofly can improve heavy caliber bellows intensity effectively, can alleviate heavy caliber bellows weight again, can reduce a kind of SEMITUBULAR RIVET head bellows of heavy caliber bellows material simultaneously again.

Design proposal: in order to realize above-mentioned purpose of design.1, bellows is one of technical characteristics of the utility model the design that the plastic tube spiral that has the hollow tube core is formed by stacking.The purpose of doing like this is: it divides body structure with existing double-wall corrugated water pipe by bilayer; Change overall structure into, both escaped to eliminate the inwall in the background technique, integrated the outer wall in the background technique again; Make the ripple tube wall after the integration both have the function of inwall, have the function of outer wall again.Therefore, not only bearing strength is high, low cost of manufacture, and in light weight, greatly reduced raw-material consumption.2, be furnished with the design of a plurality of T staple heads on metal die or the nonmetal tube core face, be the utility model technical characteristics two.The purpose of doing like this is: owing to be furnished with a plurality of T staple heads on metal die or the nonmetal tube core face; When molten plastic topped during at T staple head; Its T staple head has not only played restraining function effectively to compound plastic layer above that; And this continuously connected fastener will be compounded in metal die or nonmetal tube core plastic layer firmly is connected as a single entity, and prevent its layering.

Technological scheme: a kind of SEMITUBULAR RIVET head bellows; Hollow tube core wall a plurality of T staple heads that distribute; The hollow tube core spiral that has composite plastic layer on the hollow tube in-core outer wall of T staple head and have a composite plastic layer is superimposed as bellows, constitutes melting sealed connection between the volute wall of bellows.

The utility model is compared with background technique, and the one, started the precedent of single wall SEMITUBULAR RIVET head bellows; The 2nd, both improved the intensity of heavy caliber bellows, alleviate heavy caliber bellows weight again, reduce the consumption of heavy caliber bellows material simultaneously again; The 3rd, metal die or nonmetal tube core face T staple head had both played the effect of fixed plastics layer; Plastic layer and metal die or nonmetal tube core face firmly are connected as a single entity; Guaranteed that bellows in use stratification can not take place, and has improved the compressive strength of plastic layer again.

Description of drawings

Fig. 1 is a SEMITUBULAR RIVET bow wave line tubular construction schematic representation.

Fig. 2 is the sectional structure schematic representation of SEMITUBULAR RIVET head bellows.

Embodiment

Embodiment 1: with reference to accompanying drawing 1.A kind of SEMITUBULAR RIVET head bellows; Hollow tube core 2 walls a plurality of T staple heads 4 that distribute; Hollow tube core 2 spirals that have composite plastic layer 3 on hollow tube core 2 inside and outside walls of T staple head 4 and have a composite plastic layer 3 are superimposed as bellows 1, constitute melting sealed connection between the volute wall of bellows 1.Said hollow tube core 2 is metal die or nonmetal tube core, and its making method is an existing technology, is not described herein at this.Its making method: the heavy caliber polyolefin that hollow tube core 2 is made through the claimant twine increase the pipe production line in directly distortion on bellow forming and the effect of two corrugated surfaces at bellow forming under behind the composite plastic layer, overlap, form the bellows internal face, and have adhere formation SEMITUBULAR RIVET head bellows outer wall between the plastic tube wall of hollow tube core 2.Said hollow tube core 2 walls a plurality of T staple heads 4 that distribute.

What need understand is: the detailed text description though above-mentioned mentality of designing to the utility model is contrasted; But these text descriptions; Just the simple text of the utility model mentality of designing is described, rather than to the restriction of the utility model mentality of designing, any combination that does not exceed the utility model mentality of designing; Increase and modification, all fall in the protection domain of the utility model.

Claims (2)

1. SEMITUBULAR RIVET head bellows; It is characterized in that: hollow tube core wall a plurality of T staple heads that distribute; The hollow tube core spiral that has composite plastic layer on the hollow tube in-core outer wall of T staple head and have a composite plastic layer is superimposed as bellows, constitutes melting sealed connection between the volute wall of bellows.

2. SEMITUBULAR RIVET head bellows according to claim 1 is characterized in that: said hollow tube core is metal die or nonmetal tube core.

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