CN2604302Y

CN2604302Y - Mould for thin shell type glass fiber reinforced plastic piping

Info

Publication number: CN2604302Y
Application number: CN 03203791
Authority: CN
Inventors: 王序杰; 吕植本; 王维东
Original assignee: Tianjin Tianlian Composite Material Co ltd
Current assignee: Tianjin Tianlian Binhai Composite Co., Ltd.
Priority date: 2003-02-21
Filing date: 2003-02-21
Publication date: 2004-02-25
Anticipated expiration: 2013-02-21

Abstract

The utility model discloses a thin shell type frp pipe die which mainly includes a barrel body, a plurality of metal corrugated layers, two end boards, a tensioning bolt, a plurality of strengthen bars and a hollow shaft; the barrel is a round cylinder whose inner circumference is axially arranged with a plurality of circle supporting bars welded with inner wall of the barrel with same distance, and the inner circumference of the barrel is also arranged with a plurality of metal corrugated layers which are welded with the inner wall of the barrel by using the contact and whose ends are welded with the circle supporting bars; the two ends of the barrel are respectively arranged with an end board which is welded with the barrel to form an integrity, the two ends of the tensioning bolt which punctures through the whole barrel are respectively fixed and connected on the center of the two end boards by using the thread, a plurality of triangle strengthen bars are respectively arranged in the two end boards with same distance, and the outer central part of the end boards is fixed with a hollow shaft. The die is designed by using the then shell principle, so the die can be produced into a structure with big diameter and light weight thus to save steel; in addition, because the tensioning bolt is fixed between the two end boards and punctures them, when detaching from the die, the casting can't damage the end boards which not only can reduce the maintenance cost and time but also improve working efficiency.

Description

Thin shell type GRP pipe mould

Technical field

The utility model relates to a kind of mould, particularly relates to a kind of thin shell type GRP pipe mould.

Background technology

GRP pipe is a kind of composite material tube, and it normally twines inner liner successively on the surface of GRP pipe mould, adds layer of sand and structure sheaf and superficial layer and make at industry or architectural transfer oil, coal gas or the water or other fluid of being mainly used to.Present existing GRP pipe mould all is to be rolled into tubbiness with steel plate, and portion is welded with reinforcement within it, and burn-on at two ends end plate and hollow shaft be made, and general diameter does not wait length 12m at 300～4000mm.Be to utilize the hollow shaft of both mold ends that it is supported during the fw frp pipeline, and make its rotation by the transmission of a side shaft.Because the length of this mould is longer, when adopting the two end supports mode deadweight of mould and when twining glass fiber the radial pull of mould is tended to cause the flexural deformation of mould, by the common intensity computational methods, if will guarantee its not flexural deformation, just must thicken the thickness of outer barrel wall and the quantity of reinforcement, mould is big more, and its deadweight is also just big more, thereby the consumption of steel also can increase thereupon.Its weight of the mould of diameter 4m can be up to 18～20 tons, and if this mould is rotated, required drive motors capacity and power consumption all can be very big, and lifting is also very inconvenient.In addition; in making the GRP pipe process; because it is very big to the power of wrapping of mould to be wrapped in the outer glass fiber of mould; the pulling force of finishing when twining the back demoulding will be very big; draw the end plate of mould one side bad through regular meeting this moment; so not only can increase the reparation number of times of mould, but also can reduce operating efficiency.

Summary of the invention

In order to address the above problem, the purpose of this utility model is to provide a kind of in light weight, material and power consumption is few, not deflection and be easy to the thin shell type GRP pipe mould of demoulding during work.

In order to achieve the above object, the thin shell type GRP pipe mould that provides of the utility model mainly by staving, metal corrugated layer, hold round muscle, end plate, turnbuckle, reinforcement and hollow shaft and form; Described staving is a cylindrical shape, equidistantly be provided with vertically on its inner periphery a few with the staving inwall weld mutually hold round muscle and several sections utilize Contact welding to interfix with the staving inwall and its end with hold round the metal corrugated layer that muscle welds mutually, the two ends of staving are respectively equipped with and its end plate by being welded and fused, the turnbuckle two ends of running through staving are connected the center of two end plates respectively with screw threads for fastening, equidistantly being provided with a plurality of right-angle sides in the two end plates respectively welds mutually with the end plate inwall, the triangle reinforcement that another right-angle side and staving inner peripheral surface weld mutually, the outer centre of end plate then is fixed with the hollow shaft that is used for supporting and rotating mould.

Described staving and metal corrugated layer are the thick steel plate of 3～4mm, and end plate is the steel plate of 10～12mm.

Described turnbuckle diameter is 50mm.

The thin shell type GRP pipe mould that the utility model provides is to utilize shell theory to design, thereby can make the bigger structure of diameter, and its weight is only for to have 1/5 of same diameter prior art mould, thereby saved a large amount of steel, and lifting is convenient; In addition, because mould is in light weight, rotary inertia is little, thereby required driving motor capacity is little, thereby can save 1/3 electric energy; Particularly owing to run through and be fixed with turnbuckle between the two end plates, just can not draw bad end plate during the demoulding like this, both reduced maintenance cost and time, improved operating efficiency again.

Description of drawings

Below in conjunction with the drawings and specific embodiments thin shell type GRP pipe mould of the present utility model is elaborated.

Fig. 1 is that thin shell type GRP pipe mould shaft of the present utility model is to cutaway view.

Fig. 2 is a thin shell type GRP pipe die side view of the present utility model.

Fig. 3 is to cutaway view along A-A among Fig. 1.

The specific embodiment

As shown in Figure 1 to Figure 3, the thin shell type GRP pipe mould that the utility model provides mainly by staving 1, metal corrugated layer 2, hold round muscle 3, end plate 4, turnbuckle 5, reinforcement 6 and hollow shaft 7,7 ' is formed; Staving 1 is a cylindrical shape, equidistantly be provided with vertically on its inner periphery a few with staving 1 inwall weld mutually hold round muscle 3 and several sections utilize Contact welding to interfix with staving 1 inwall and the end with hold round the metal corrugated layer 2 that muscle 3 welds mutually, the two ends of staving 1 are respectively equipped with and its end plate 4 by being welded and fused, turnbuckle 5 two ends of running through staving 1 are connected the center of two end plates 4 respectively with screw threads for fastening, equidistantly being provided with a plurality of right-angle sides in the two end plates 4 respectively welds mutually with end plate 4 inwalls, the triangle reinforcement 6 that another right-angle side and staving 1 inner peripheral surface weld mutually, end plate 4 outer centres then are fixed with the hollow shaft 7,7 ' that is used for supporting and rotating mould.When making this mould, at first that 3mm is thick steel plate is rolled into tubular and is that the cylindrical shell that muscle 3 lacks a plurality of length that holds round of T type is welded into staving 1 with cross section, then that 3mm is thick steel plate is pressed into the corrugated reel and makes metal corrugated layer 2, metal corrugated layer 2 placed the inside of staving 1 and at staving 1 inner peripheral surface and metal corrugated layer 2 and hold round muscle 3 and weld fixing with metal corrugated layer 2 end touching positions, a plurality of corrugations of metal corrugated layer 2 are equivalent to a plurality of shaft orientation reinforcing ribs that support staving 1, its skin did not produce distortion when it can make mold work, and can not occur because the deflection problem of conducting oneself with dignity and to produce has guaranteed the normal use of mould because it is in light weight.Then two end plates 4 is welded on the two ends of staving 1, and the manhole from the staving 1 enters its inside one right-angle side of a plurality of triangle reinforcements 6 equidistantly is welded on the inner periphery at staving 1 two ends, and another right-angle side is welded on the inwall of two end plates 4.Subsequently the φ 50mm turnbuckle 5 of length greater than 12m placed in the mould, and the method that connects with screw threads for fastening is fixed on turnbuckle 5 on the two end plates 4, make its two ends pass the center of the thick circular end plate of 12mm 4, in the welding of the centre in two end plates 4 outsides, can be used to support and rotate the hollow shaft 7,7 ' of mould at last.Should carry out the demoulding after winding GRP pipe with this mould, when the hollow shaft 7 of holding mould one side carries out the demoulding, end plate 4 tensions of joining with it, owing to be provided with turnbuckle 5 in the mould, it can make another end plate 4 pressurized simultaneously, because two end plates 4 is simultaneously stressed, at this moment just entire die can be released body smoothly.So just can avoid because whole pulling force is only born by a side end panel, thereby easily this end plate be drawn bad and the problem of mold damage.

Claims

1, a kind of thin shell type GRP pipe mould, it is characterized in that: described thin shell type GRP pipe mould mainly by staving (1), metal corrugated layer (2), hold round muscle (3), end plate (4), turnbuckle (5), reinforcement (6) and hollow shaft (7,7 ') is formed; Staving (1) is a cylindrical shape, equidistantly be provided with vertically on its inner periphery a few with staving (1) inwall weld mutually hold round muscle (3) and several sections utilize Contact welding to interfix with staving (1) inwall and the end with hold round the metal corrugated layer (2) that muscle (3) welds mutually; The two ends of staving (1) are respectively equipped with and its end plate (4) by being welded and fused, turnbuckle (5) two ends of running through staving (1) are connected the center of two end plates (4) respectively with screw threads for fastening, equidistantly being provided with a plurality of right-angle sides in the two end plates (4) respectively welds mutually with end plate (4) inwall, the triangle reinforcement (6) that another right-angle side and staving (1) inner peripheral surface weld mutually, the outer centre of end plate (4) then is fixed with the hollow shaft (7,7 ') that is used for supporting and rotating mould.

2, thin shell type GRP pipe mould according to claim 1 is characterized in that: described staving (1) and metal corrugated layer (2) are the thick steel plate of 3～4mm, and end plate (4) is the steel plate of 10～12mm.

3, thin shell type GRP pipe mould according to claim 1 is characterized in that: described turnbuckle (5) diameter is 50mm.