CN101879738B

CN101879738B - Making method of composite material pipe fitting

Info

Publication number: CN101879738B
Application number: CN2010102190835A
Authority: CN
Inventors: 万峰; 刘世宗
Original assignee: XIAMEN XINKAI COMPOSITE MATERIALS SCIENCE AND TECHNOLOGY CO LTD
Current assignee: Xiamen Xinkai Composite Materials Science and Technology Co.,Ltd.
Priority date: 2010-06-30
Filing date: 2010-06-30
Publication date: 2012-06-27
Anticipated expiration: 2030-06-30
Also published as: CN101879738A

Abstract

The invention relates to a making method of a pipe fitting, comprising the following steps of: adopting a circular core shaft in the coiling process of the pipe fitting, accomplishing the coiling process of a fiber yarn slice by using a machine station, and then inwards expanding the coiled yarn pipe into a product shape and carrying out corresponding position reinforcement by using a special inward expanding core shaft after accomplishing coiling. In the whole process, because the coiled coating and high-air pressure formation are carried out by adopting a machine, the stability of the making process of the product as well as the bonding tightness among fiber yarn layers and the orientation degrees of fibers are ensured, and the integral strength of the product is effectively improved. In addition, for the making of outer-layer elasticity and manipulation of the pipe fitting, after the outer surface of the pipe fitting with the initial shape is directly attached with an elastic layer, the pipe fitting is integrally formed at high temperature and high pressure into a finished product, and the elastic layer can be fused together with a carbon fiber layer at high temperature and forms a certain elasticity so that the pipe fitting has the advantages of no smoothness of a composite interface, good slip resistance and easy-manipulation special interface and can dispense with the subsequent working procedures of grinding, labeling, painting and the like, thereby greatly reducing the production time of the product.

Description

The preparation method of composite pipe

Technical field

The present invention is meant a kind of preparation method of composite pipe especially about a kind of macromolecule carbon fibrous composite pipe fitting.

Background technology

Bandy is a ball game on ice that antagonism is extremely strong, and traditional bandy is carved into by wood, maple or elm.Because of the characteristic of material, the intensity of this type of club relatively a little less than, damage easily, and wooden shaft can not change blade mostly, be ground to a certain degree and must put in order Zhi Huanxin.So intensity and the substitutability of dealer in order to increase product, the high strength of composite and substitutability just begin to be widely used in this field.

Present common polymer composite pipe fitting; As the mode of production of hockey lever on ice, be to make the mandrel that is similar to the club finished product earlier, like the square mandrel of square club; Adopt according to job requirements during operation and utilize the manual mode of operation; Fiber yarn sheet with each specification is coated on the square mandrel one by one, after being covered to complete, transfers to mandrel to be built in airduct again and carries out the HTHP moulding.But there are two kinds of deficiencies in whole process of production; The one, the manual mode of operation can exist to coat yarn sheet dynamics inequality, makes its stability wayward; It is not tight to be prone to cause product to coat; The deficiency that reinforcement can't correctly be located easily, and the blast tradition is 150psi during moulding, and this pressure can't guarantee that the yarn sheet of each interlayer fully fits together; The 2nd, manually-operated coats the mode of operation of yarn sheet, makes the efficient of this volume yarn operation significantly to improve, and to making production efficiency low, production cost is high.

In addition, because the characteristic of carbon fibre composite, its product rigidity of producing is stronger, and feel is stiff, and smooth surface is difficult for controlling; And because half-finished surface has some cosmetic issues that produce in the forming process after the moulding, need carry out follow-up grinding successively and mend soil, the decals and the action of spraying paint, can satisfy pipe fitting elasticity and can be handling and the aesthetic property of outward appearance.Therefore, the complex procedures of secondary operations is loaded down with trivial details, influences make efficiency.

Summary of the invention

Main purpose of the present invention provides a kind of preparation method of composite pipe, and it makes the physical characteristic of composite pipe have under the strong prerequisite that improves, and effectively improves the production efficiency of formation of tubes.

Secondary objective of the present invention provides a kind of preparation method of composite pipe; It can make under the situation of not losing the pipe fitting rigidity; The elasticity that increases pipe fitting with can be handling, and realize reducing the function of production operation time, further improve the production efficiency of pipe fitting finished product.

For realizing above-mentioned purpose, solution of the present invention is:

A kind of preparation method of composite pipe, its concrete steps are:

1) shop yarn: on demand each layer is launched folded establishing and post, form whole yarn sheet;

2) volume yarn preparatory type: adopt on the yarn sheet that a circular mandrel is placed on whole, with bushing machine once roll accomplish form cylinder after, extraction should form spool behind the circle mandrel;

3) spool typing: will be at least by the three-chip type active block form non-circular in the support mandrel place spool, when the block at middle part embeds in addition between two blocks, overhang the first type of pipe fitting after, support mandrel in extracting out;

4) formation of tubes: airduct is placed after just the pipe fitting spool of type carries out HTHP, just accomplish the moulding of pipe fitting, extract airduct at last out.

The interior support mandrel of said step 3) before spool is gone in support, reinforcing yarn sheet on each arris of interior support mandrel.

The interior support mandrel of said step 3) is sticked on elastic layer at the outer surface of pipe fittings of first type before extraction.

Described elastic layer is PU or TPU resin cloth.

Said step 2) bushing machine in is meant that the upper and lower end face can auto-paralleling moves and can highly change through adjustment the bushing machine of pressure.

The support mandrel is to comprise three of left, center, rights in the three-chip type in the said step 3); Two are the moulding sheet wherein; One groove of dark formula is gradually all arranged on two opposite faces about this; Middle a slice is in two the groove about expanding bar and being matched with, through about on two gradually the groove of dark formula and the dynamic fit that expands bar can be whole in the profile expansion of support mandrel.

Airduct in the said step 4) is equipped with sebific duct outward, and this sebific duct is that rubber-like flexible hose or silicone tube are to guarantee the slickness of pipe fitting inner wall.

The pressure of said step 4) mesohigh is more than or equal to 220psi.

After adopting such scheme; Owing to be to adopt volume yarn machine to carry out mechanical type to roll spool in the preparation method of the present invention; Add of the interior support effect of the interior support mandrel of three-chip type active block formation at least to spool; Make that the compactibility and the uniformity of interlayer was better when each layer yarn sheet rolled, guarantee that with this physical property behind formation of tubes has raising more by force; Again, the processing mode that mechanical processing is artificial relatively, working (machining) efficiency can significantly improve.

In addition, for outer elasticity of pipe fitting and handling making, be after just the outer surface of pipe fittings of type is directly sticked on elastic layer; Carry out the one-body molded pipe fitting finished product of HTHP again, this elastic layer material can at high temperature be melted and dissolved with carbon fiber layer and form a particular interface, and this interfacial characteristics has certain elasticity; Do not answer the slickness at material interface, slip resistance is good, is prone to control; And after this interface forms, can save the grinding of back, decals and operation such as spray paint; Can directly use, significantly reduce the production time of product.

Description of drawings

Fig. 1 is that of the present invention rolling used the mandrel sketch map;

Fig. 2 is a yarn sheet applying sketch map of the present invention;

Fig. 3 is that yarn sheet of the present invention rolls sketch map;

Fig. 4 is the schematic cross-section after yarn sheet of the present invention rolls;

Fig. 5 is a support mandrel schematic perspective view in the three-chip type of the present invention;

Fig. 6 is a support mandrel operation chart in the three-chip type of the present invention;

Fig. 7 is the schematic cross-section of product after the reinforcement of the present invention;

Fig. 8 is the local appearance sketch map of pipe fitting finished product of the present invention.

The specific embodiment

Like Fig. 1 to shown in Figure 8, the preparation method of a kind of polymer composite pipe fitting that the present invention discloses, like the operation implementation process of hockey lever on ice:

The shop yarn:

As shown in Figure 1, at first make a circular mandrel 1, its outer perimeter is the interior perimeter dimension after the formed product;

As shown in Figure 2, the yarn sheet that has cut 21 is fit together on demand blocks ofly, form a whole yarn sheet 2 that magnifies.

The preparatory type of volume yarn:

As shown in Figure 3, open and roll board 3, yarn sheet shown in Figure 22 is placed on the following capping 31 of board 3, and mandrel shown in Figure 11 is placed on the yarn sheet 2, adjust the position after, start board 3, yarn sheet 2 is rolled, extract circular mandrel 1 out; The cross section that effect after rolling is as shown in Figure 4, yarn sheet 2 roll into a cylindrical spool 4 fully.The bushing machine here is meant that the upper and lower end face can auto-paralleling moves and can highly change through adjustment the bushing machine of pressure.

The spool typing:

Like Fig. 5,6 and cooperate shown in Figure 7; In cylindrical spool 4, put support mandrel 5 in again; Should in support mandrel 5 comprise left sheet 51, right sheet 52 and in sheet 53 3 partly; Wherein left sheet 51 is the moulding sheet of symmetry with right sheet 52, is equipped with an axial gradually dark groove 511,521 on this left side sheet 51 and right sheet 52 opposite faces; Middle sheet 53 is the expansion bar of a mating groove 511,521 profiles; After the left sheet 51 of interior support mandrel 5, right sheet 52 make-ups are stretched and are placed spool 4; About middle sheet 53 being matched with among two 51,52 groove, middle sheet 53 to left sheet 51, right sheet 52 on can be whole in when dynamically moving in the gradually dark groove 511,521 the profile expansion of support mandrel 5, thereby realization is expanded typing to cylindrical spool 4; The outer contour shape of support mandrel 5 is to be that example describes with square here in promptly forming.Certainly, support mandrel 5 also can adopt the structure more than three in this, but all needs the axially gradually formation of deep trouth, cooperates the expansion bar at center simultaneously, promptly forms non-circular interior support mandrel, with the effect of support typing spool in realizing,

As shown in Figure 7; Interior support mandrel 5 is before spool 4 is gone in support; On each arris of interior support mandrel 5, paste the yarn sheet that needs reinforcement, interior support mandrel 5 is inserted in the rolled spool 4, through the effect of outside support; The reinforcement yarn sheet just is fitted in and forms reinforcing steel 41 on four angles of spool 4, and spool 4 is also supportted into square simultaneously.

Cooperate shown in Figure 8ly, will cut ready elastic layer 6, be coated on the spool 4 like PU or PTU resin cloth; And guarantee that outer membrane is not damaged; This PU or TPU material can soften molten dissolving when 150 deg.c, and the color of this material and floral designs can be provided with arbitrarily, in addition; This resin cloth is one-sided smooth and the subsides high temperature resistance diaphragm is arranged that this film is high temperature resistant must to be higher than 200 degrees centigrade.

Formation of tubes:

Support mandrel 5 passes spool 4 with the airduct that is coated with sebific duct in extracting out, carries out the heating and pressurizing moulding, and this sebific duct is that rubber-like flexible hose or silicone tube are to guarantee the slickness of pipe fitting inner wall; In this process, because the effect and the action of high temperature of external and internal pressure, the pressure of high pressure is more than or equal to 220psi here, and yarn sheet is fit together by extruding completely, in conjunction with tight; Meanwhile, TPU or PU resin cloth, through the HTHP process of moulding, this layer resin cloth and yarn sheet fibrage fuse together, and form a particular interface, and certain elasticity can have been played in this interface, and skid resistance also can reduce the function of back segment production time.After the completion to be formed, extract the airduct and the sebific duct of inwall out, tear the rete on TPU or PU resin cloth surface, after the cutting process of the line correlation of going forward side by side, just can obtain required high-strength pipe.

In sum; Because preparation method of the present invention is to adopt volume yarn machine to carry out mechanical type to roll spool; Add the interior support effect of 5 pairs of spools 4 of interior support mandrel of three-chip type active block formation at least; Make that the compactibility and the uniformity of interlayer was better when each layer yarn sheet rolled, guarantee the compactness of yarn sheet and the forward degree of fiber, guarantee that with this physical property behind formation of tubes has raising more by force; Again, the processing mode that mechanical processing is artificial relatively, working (machining) efficiency can significantly improve.In addition, for outer elasticity of pipe fitting and handling making, be after just the outer surface of pipe fittings of type is directly sticked on elastic layer 6; Carry out the one-body molded pipe fitting finished product of HTHP again, this elastic layer material can at high temperature be melted and dissolved with carbon fiber layer and form a particular interface, and this interfacial characteristics has certain elasticity; Do not answer the slickness at material interface, slip resistance is good, is prone to control; And after this interface forms, can save the grinding of back, decals and operation such as spray paint; Can directly use, significantly reduce the production time of product.

Claims

1. the preparation method of a composite pipe, its concrete steps are:

2) volume yarn preparatory type: adopt on the yarn sheet that a circular mandrel is placed on whole, with bushing machine once roll form cylinder after, extraction should form spool behind the circle mandrel;

3) spool typing: will be at least by the three-chip type active block form non-circular in the support mandrel place spool, overhang the first type of pipe fitting when embedding in addition between two blocks by the block at middle part, support mandrel in extracting out afterwards;

4) formation of tubes: airduct is placed after just the pipe fitting spool of type carries out heating and pressurizing, just accomplish the moulding of pipe fitting, extract airduct at last out.

2. the preparation method of composite pipe as claimed in claim 1 is characterized in that: the interior support mandrel of step 3) before spool is gone in support, reinforcing yarn sheet on each arris of interior support mandrel.

3. the preparation method of composite pipe as claimed in claim 1 is characterized in that: the interior support mandrel of step 3) is sticked on elastic layer at the first outer surface of pipe fittings of type before extraction.

4. the preparation method of composite pipe as claimed in claim 3, it is characterized in that: described elastic layer is PU or TPU resin cloth.

5. the preparation method of composite pipe as claimed in claim 1 is characterized in that: step 2) in bushing machine be meant that the upper and lower end face can auto-paralleling moves and can highly change through adjustment the volume cutting mill of pressure.

6. the preparation method of composite pipe as claimed in claim 1; It is characterized in that: the support mandrel is to comprise three of left, center, rights in the three-chip type in the step 3); Two are the moulding sheet wherein; One groove of dark formula is gradually all arranged on two opposite faces about this, and middle a slice is in two relative grooves about expanding bar and being matched with, through about on two gradually the groove of dark formula and the dynamic fit that expands bar can be whole in the profile expansion of support mandrel.

7. the preparation method of composite pipe as claimed in claim 1, it is characterized in that: the airduct in the step 4) is equipped with sebific duct outward, and this sebific duct is that the rubber-like flexible hose is to guarantee the slickness of pipe fitting inner wall.

8. the preparation method of composite pipe as claimed in claim 7, it is characterized in that: the rubber-like flexible hose is a silicone tube.

9. the preparation method of composite pipe as claimed in claim 1, it is characterized in that: the pressure that pressurizes in the step 4) is more than or equal to 220psi.