阅读说明：本技术 一种复合材料连续纤维锁链的成型方法 (Method for forming composite continuous fiber chain ) 是由 娄小杰 王威力 罗世文 魏喜龙 周国泰 侯涤洋 王世巍 于 2021-03-23 设计创作，主要内容包括：本发明提出一种复合材料连续纤维锁链的成型方法,涉及的结构适用材料为纤维增强树脂基复合材料。复合材料的基体树脂包括环氧树脂体系、乙烯基酯体系和聚酯树脂体系等；复合材料的增强相材料包括碳纤维、玻璃纤维、芳纶纤维、玄武岩纤维和PBO纤维等连续纤维,具体方法为：组合锁链成型模具,采用连续纤维成型复合材料锁链,表面修整,采用此方法可成型连续纤维的复合材料锁链。解决了现有技术的金属锁链重量大,不易操作,在海洋环境中,由于海水中含有大量离子,海水与金属接触时易发生电化学腐蚀,使金属锁链的强度下降,影响使用的问题,本发明涉及的成型方法成型的复合材料锁链,与金属锁链相比,质轻易操作,在海洋环境中耐腐蚀性好。(The invention provides a method for forming a continuous fiber chain of a composite material, and relates to a structure applicable material which is a fiber reinforced resin matrix composite material. The matrix resin of the composite material comprises an epoxy resin system, a vinyl ester system, a polyester resin system and the like; the reinforced phase material of the composite material comprises continuous fibers such as carbon fibers, glass fibers, aramid fibers, basalt fibers and PBO fibers, and the specific method comprises the following steps: the combined chain forming mold adopts continuous fiber to form the composite material chain and surface finishing, and the method can form the composite material chain of the continuous fiber. The composite material chain formed by the forming method is light in weight, easy to operate and good in corrosion resistance in a marine environment compared with a metal chain.)

1. A method for forming a composite continuous fiber chain is characterized by comprising the following steps:

(1) preparing a continuous fiber reinforced material, wherein the continuous fiber reinforced material is one or more of carbon fiber, glass fiber, aramid fiber, basalt fiber and PBO fiber;

(2) assembling a composite material chain forming die;

(3) winding the used fiber on a thread guide;

(4) drawing the fibers by using a thread guide, tightly winding the fibers on the surface of an arc-shaped cavity formed after the die assembly until the fibers fill the arc-shaped cavity of the die, and infiltrating resin in the winding process to enable the resin to saturate the fibers;

(5) demolding after curing, and finishing until the surface is smooth to form a chain structure unit;

(6) and (3) assembling the mould, inserting the formed chain structure unit into the mould during assembly, repeating the steps 2-5 to form a second chain structure, and repeating the subsequent forming of the chain structure unit.

2. The method for forming a composite material continuous fiber chain according to claim 1, wherein in the step (2), the assembling method for assembling the composite material chain forming mold comprises:

(1) the main components of the two-segment forming die are screwed and fixed by screws and nuts,

(2) the other two-segment forming die main components are screwed and fixed by bolts and nuts,

(3) and finally, the two connected molds are assembled into a whole by penetrating the round holes through screws, and nuts are screwed and fixed.

3. The method for forming a continuous fiber chain of composite material according to claim 1, wherein in the step (4), the pulling tension is greater than 20N.

4. The method for forming the composite continuous fiber chain according to claim 1, wherein in the step (4), the resin content is controlled to be 20-40%.

5. The forming method of the composite material continuous fiber chain according to claim 1, wherein the composite material chain forming mold comprises four main components (1) with the same structure, a connecting bolt (2) and a connecting nut (3), the four main components (1) are arranged oppositely and fixed into a whole through the connecting bolt (2) and the connecting nut (3), the section of each main component is semicircular, two semicircular arc cavities are symmetrically arranged on the bottom edge of the semicircle, a protruding lug is vertically arranged at the top of the semicircle, a protruding lug is also vertically arranged at the bottom of the semicircle, and threaded holes are arranged on the two protruding lugs and used for penetrating through the connecting bolt (2) and fixing the two adjacent main components (1) through the connecting nut (3).

Technical Field

The invention relates to a method for forming a composite material continuous fiber chain, and belongs to the technical field of composite material forming methods.

Background

At present, the chain is made of metal, such as steel, aluminum, etc. The metal density is high, and in the use, metal chain weight is big, and is difficult to operate, and simultaneously, in marine environment, the corrosion resistance of metal is relatively poor, consequently needs to develop the chain of novel light material and replaces. The continuous fiber reinforced resin matrix composite material has the advantages of good corrosion resistance, high specific strength specific modulus and the like, and is widely applied in the fields of aerospace, transportation, chemical engineering, mechanical manufacturing and the like, but patents and reports of adopting a composite material continuous fiber forming chain structure are not seen at present.

Disclosure of Invention

The invention aims to solve the problems that the metal chain in the prior art is heavy and difficult to operate, and meanwhile, in a marine environment, because seawater contains a large amount of ions, electrochemical corrosion is easy to occur when the seawater is in contact with metal, so that the strength of the metal chain is reduced, and even the use is influenced. The continuous fiber reinforced resin matrix composite material has the advantages of high resistivity, low density, good corrosion resistance and the like, so the invention provides the method for forming the composite material continuous fiber chain, which is used for forming the composite material chain of the continuous fiber, and the prepared chain has the advantages of light weight, designability of material structure of a composite material product and the like.

The invention provides a method for forming a composite continuous fiber chain, which specifically comprises the following steps:

(1) preparing a continuous fiber reinforcement material, wherein a matrix resin of the fiber reinforcement material comprises an epoxy resin system, a vinyl ester system and a polyester resin system; the reinforcing phase material of the fiber reinforced material is one or more of carbon fiber, glass fiber, aramid fiber, basalt fiber and PBO fiber;

(2) assembling a composite material chain forming die;

(3) winding the used fiber on a thread guide;

(4) drawing the fibers by using a thread guide to enable the fibers to be tightly wound on the surface of the die until the fibers fill the arc-shaped cavity of the die, and infiltrating resin in the winding process to enable the resin to be soaked in the fibers;

(5) demolding after curing, and finishing until the surface is smooth to form a chain structure unit;

(6) and (3) assembling the mould, inserting the chain structure unit formed in the step (5) into the mould during assembly, repeating the steps 2-5 to form a second chain structure, forming the subsequent chain structure unit and the like.

Preferably, in step (4), the traction tension is greater than 20N.

Preferably, in the step (4), the resin content is controlled to be 20% -40%.

The utility model provides a combined material chain forming die, includes four main component that the structure is the same, connecting bolt and coupling nut, four main component sets up relatively to fix into a whole through connecting bolt and coupling nut, the cross-section semicircular in shape of main component, the symmetry is provided with two semicircle arc chambeies on the semicircular base, and the semicircular top sets up a protrusion ear perpendicularly, semicircular bottom also sets up a protrusion ear perpendicularly, all is provided with the screw hole on two protrusion ears for pass connecting bolt, and through two adjacent main component of coupling nut fixed.

The forming method of the composite material continuous fiber chain has the beneficial effects that:

1. the invention relates to a method for forming a continuous fiber chain of a composite material, which has the advantages of simple process, no need of mechanical equipment such as a winding machine and the like, low labor and material cost and no need of a complicated subsequent machining process.

2. The proportion of the reinforcing material of the composite material chain is controllable, and the formed chain is light in weight, corrosion resistant and basically the same as that of a metal chain in tensile property.

3. The composite material chain can be used for independently forming the chain link units of the chain and then connecting, and can also be used for continuously forming the chain link units of the chain, namely when a problem occurs in one chain link unit of the chain, the chain link unit can be replaced, the chain can still be used, and the loss is reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In the drawings:

FIG. 1 is a front view of a main member of a composite material chain forming mold according to the present invention;

FIG. 2 is a right side view of the main member of the composite link forming mold of the present invention;

FIG. 3 is a bottom view of the primary member of the composite link forming mold of the present invention;

FIG. 4 is a schematic view of the assembly of the forming mold of the composite material chain of the present invention;

FIG. 5 is a right side view of FIG. 4;

FIG. 6 is a bottom view of FIG. 4;

wherein, 1-main component, 2-connecting bolt, 3-connecting nut, and 4-round empty groove.

Detailed Description

The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:

the first embodiment is as follows: the present embodiment is explained with reference to fig. 1 to 3. The method for forming the composite continuous fiber chain specifically comprises the following steps:

(1) preparing a continuous fiber reinforcement material, wherein a matrix resin of the fiber reinforcement material comprises an epoxy resin system, a vinyl ester system and a polyester resin system; the reinforcing phase material of the fiber reinforced material is one or more of carbon fiber, glass fiber, aramid fiber, basalt fiber and PBO fiber;

(2) assembling a composite material chain forming die;

(3) winding the used fiber on a thread guide;

(4) using a thread guide to pull the fibers, enabling the fibers to be tightly wound on the surface of the arc-shaped cavity formed after the die assembly until the fibers fill the arc-shaped cavity of the die, infiltrating resin in the winding process, enabling the resin to be soaked in the fibers, and controlling the resin content to be 20-40%;

(5) removing the screw and the nut after curing, demoulding, polishing and trimming off redundant fibers until the surface is smooth, and forming a chain structure unit;

(6) and (3) assembling the mould, inserting the chain structure unit formed in the step (5) into the mould during assembly, repeating the steps (2) to (5) to form a second chain structure, and forming the subsequent chain structure unit and the like.

Continuous fiber reinforcement used for composite chain: the reinforced material 1 is carbon fiber, the reinforced material 2 is glass fiber, the reinforced material 3 is aramid fiber, the reinforced material 4 is basalt fiber, and the reinforced material 5 is PBO fiber. The reinforcing material is one or more of the materials, and can be selected according to the requirements of different strength, modulus, cost and the like.

The utility model provides a combined material chain forming die, includes four main component 1 that the structure is the same, connecting bolt 2 and coupling nut 3, four main component 1 set up relatively to fix into a whole through connecting bolt 2 and coupling nut 3, the cross-section semicircular in shape of main component, the symmetry is provided with two semicircle arc chambeies on the semicircular base, and the semicircular top sets up a protrusion ear perpendicularly, semicircular bottom also sets up a protrusion ear perpendicularly, all is provided with the screw hole on two protrusion ears for pass connecting bolt 2, and fix two adjacent main component 1 through coupling nut 3.

And assembling the composite material chain forming die. And (3) screwing and fixing the main components of the two-segment forming die by using screws and nuts. And the other two main components of the forming die are screwed and fixed by screws and nuts. And finally, the two connected molds are assembled into a whole by penetrating the round holes through screws, and nuts are screwed and fixed.

The forming die of the composite material chain comprises four main components 1 with the same structure, a connecting bolt 2 and a connecting nut 3, and the mounting method comprises the following steps:

(1) after the connecting bolt 2 passes through the threaded hole between the first main component and the second main component, the connecting bolt is screwed by the connecting nut 3, and the relative position between the first main component and the second main component is fixed;

(2) the connecting bolt 2 is inserted through the threaded hole between the third main member and the fourth main member, and then tightened by the connecting nut 3 to fix the relative position between the third main member and the fourth main member.

(3) The connecting bolt 2 is inserted through the threaded hole between the first main member and the fourth main member, and then tightened by the connecting nut 3 to fix the relative position between the first main member and the fourth main member.

(4) The connecting bolt 2 is inserted through the threaded hole between the second main member and the third main member, and then tightened by the connecting nut 3 to fix the relative position between the second main member and the third main member.

The use method of the forming die of the composite material chain comprises the following steps:

and winding the used fibers on a thread guide, and drawing the fibers by using the thread guide to enable the fibers to be tightly wound on the surface of the arc-shaped cavity formed after the die is combined until the fibers fill the arc-shaped cavity of the die. Resin is dipped in the winding process to enable the resin to saturate the fibers. And after curing, removing the screw and the nut, and demolding to form a chain structure unit.

The mold is assembled according to the above-described installation steps, and the last molded zipper structure unit is inserted into the circular hollow groove in the mold during assembly, see position 4 shown in fig. 2, and the molding step is repeated to form a second zipper structure. And the subsequent chain structure unit molding is analogized, so that the molded chain structure unit can be inserted into the mold on one side or inserted into the mold on two sides.

The above-mentioned embodiments further explain the objects, technical solutions and advantages of the present invention in detail. It should be understood that the above-mentioned embodiments are only examples of the present invention, and are not intended to limit the present invention, and that the reasonable combination of the features described in the above-mentioned embodiments can be made, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.