CN101791853A - Forming method of continuous special-shaped fiber pipe fittings - Google Patents

Abstract

The invention relates to a method for forming a continuous special-shaped fiber pipe fitting, which comprises the steps of taking a foamed polystyrene material to manufacture a model body; firstly, coating a high-temperature-resistant synthetic latex surface layer on the whole outer part of a model body, and reserving at least one inflation inlet; then, tightly winding the fiber material belt on the surface of the latex surface layer, putting the fiber material belt into a simple die locked by a bolt for heating, heating and melting the fiber material belt in a curing process to form a fiber material with freedom degree, and filling high-pressure gas into an inflation inlet of the latex surface layer to enable the fiber material to be pushed by the expanded latex surface layer to be attached to the cavity surface of the die for curing; then the fiber pipe fitting is subjected to a cooling and shaping processing procedure of cooling the die and a model cleaning processing procedure to obtain a finished fiber pipe fitting product; the thickness of the pipe wall of the finished fiber pipe fitting can be effectively controlled in the binding belt processing procedure, so that the fiber pipe fitting meeting various requirements on stable strength (including different pipe wall thicknesses) can be simply and quickly produced.

Description

Forming method of continuous special-shaped fiber pipe fittings

technical field

The invention relates to a continuous special-shaped fiber pipe forming method that can easily and stably produce fiber pipes meeting various (different pipe wall thickness) strength requirements, and the production process is more economical.

Background technique

At present, the known molding technology of fiber pipe fittings is a method similar to blow molding. Wrap the fiber prepreg outside the nylon air bag, place it in the inner cavity of the mold, then fill it with high-pressure gas into the nylon air bag, and then heat the mold to mature the fiber material, and make a pipe fitting product that is consistent with the inner cavity of the mold . However, this traditional molding method is not conducive to the production of pipe fittings with complex shapes, because the nylon air bag is too soft, and when making the pipe fitting preform (there will be a problem of preform depression), it is impossible to obtain a model consistent with the product shape, resulting in fiber The creases, wrinkle defects of finished pipe fittings, and even the failure of mechanical properties. The existing People's Republic of China Patent No. 200620061857.5 "a new type of latex air bag model J patent case is that the latex air bag is placed outside the mandrel with the same shape as the fiber pipe fittings, and the size is reduced. In practice, the fiber prepreg is wrapped outside the latex air bag placed outside the mandrel, placed in the inner cavity of the mold and then filled with high-pressure gas and supplemented with the curing temperature of the fiber prepreg; after the product is manufactured, it is mechanically Or use a solvent that does not corrode the fiber and the base material to dissolve and remove the mandrel made of EPS and remove the latex air bag to obtain a finished fiber pipe fitting; although this latex air bag model can improve the instability of the traditional construction method, however, the core The shaft is sleeved with a latex air bag of the same shape. For the molding of multi-bending or multi-turning pipe fittings, there will be a disadvantage that the latex air bag is not easy to wear on the mandrel surface, which consumes a lot of labor costs; and latex Outside the air bag, the fiber prepreg is wrapped in a patch wrapping method. Since the fiber prepreg wrapped outside the latex air bag is not a continuous impregnation layer (there are faults), virtually, by The pipe wall strength of the pipe fittings matured by fiber prepreg is extremely unstable. Even if the material layer is thickened, the stability of the pipe wall strength may not be effectively controlled; Cylinder clamping machine is used to open/close the mold, and it is supplemented by the cooking source in the auxiliary tool to heat the fiber prepreg to make it mature; it takes a period of time for the fiber prepreg to reach the curing temperature, plus cooling The setting time, the hydraulic cylinder clamping machine will have a long standby time loss in the process of continuous work, and it is a production equipment with high investment cost, which directly affects the economic benefits of fiber pipe fittings production.

Contents of the invention

The main purpose of the present invention is to provide a continuous special-shaped fiber pipe forming method to solve various problems in the prior art.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A method for forming continuous special-shaped fiber pipe fittings, characterized in that: take expanded polystyrene (EPS) material, and make a model body in the model making program; first, the entire exterior of the model body is impregnated and coated with latex procedure (impregnated dipping) to cover a high-temperature-resistant synthetic latex surface layer, and reserve at least one air-filled port; next, through the strapping processing procedure, the fiber material tape is tightly wound on the surface of the latex surface layer, and placed into the bolt clamping mold Heating in the simple mold and performing the aging processing procedure; along with the aging process of the fiber material belt, it is heated and melted to form a fiber material with a degree of freedom and the effect of shrinkage of the model body when the model body is heated at high temperature, supplemented by an air-inflated processing procedure, from the latex surface layer The inflatable port is filled with high-pressure gas, so that the fiber material is pushed by the expanded latex surface to the cavity surface of the mold for curing; the cooling and shaping process of timely cooling of the mold makes the mature fiber formed in the cavity of the mold Semi-finished pipe fittings; finally, open the mold to take out the semi-finished fiber pipe fittings, and then go through the model cleaning process to clean out the reduced model body and latex surface to obtain the finished fiber pipe fittings.

Wherein: the model making procedure is to take polystyrene material and place it in a foaming mold to mold and make a model body made of expanded polystyrene (EPS) material, so that mass production can provide a large amount of consumption when the pipe fittings are produced need.

Wherein: the latex combined dipping and coating processing procedure is to place the model body into a synthetic latex impregnation tank for dipping, and to coat a high-temperature-resistant synthetic latex surface layer through solidification treatment, dipping, and the coated latex One end of the surface layer is provided with an air-inflating port; by virtue of the non-adhesion between the synthetic latex surface layer and the expanded polystyrene (EPS) material model body when heated, the heated model body shrinks, and the high-pressure gas can be directed from the inflation port to the latex surface layer. Inflated.

Wherein: the bandage processing procedure is to tightly wrap the continuous fiber material band on the surface of the latex surface layer, change the thickness of the band body of the fiber material band or increase or decrease the number of windings back and forth or increase the winding band locally Quantity, according to which the thickness of all or part of the fiber tape on the surface of the latex surface can be changed or adjusted, so that the thickness of all or part of the pipe wall can be easily controlled when the fiber pipe is formed, and the production of the finished pipe , can meet the stability requirements of various strengths.

Wherein: the bandage processing procedure is to continuously wrap the fiber material band tightly on the surface of the latex surface layer, and the fiber material band is obtained by pre-impregnating the fiber cloth with resin to form a flexible fiber sheet , and then processed by the belt splitter into broadband and thin flexible fiber material belts; the wide-band specification fiber material belt is used for large-scale and rapid winding of the latex surface layer, supplemented by thin belt specification fiber material belts for detail or reinforcement Sexual or decorative or repairing winding, according to the latex surface layer, the fiber material tape is tightly wound, which is beneficial to the molding of various special-shaped fiber pipes, and the strength requirements of each part have good stability.

Wherein: the fiber cloth is pre-impregnated with resin to form a flexible fiber sheet, and the fiber cloth is carbon fiber cloth.

Wherein: the fiber cloth is pre-impregnated with resin to form a flexible fiber sheet, and the fiber cloth is glass fiber cloth.

Wherein: the described ripening processing program is to prepare a plurality of simple molds for bolt clamping, and once the outer latex surface surface of each model body is wrapped with fiber material, it is placed in a simple mold, and the heat source on the mold , the temperature of 130 ℃ ~ 150 ℃ is used to heat the fiber material belt, and to cool and shape it. The whole process is divided independently, and the mold is reused in the process of completing the semi-finished pipe fittings to obtain economic benefits.

Wherein: the model cleaning process is to mechanically destroy and remove the model body and latex surface layer in the semi-finished fiber pipe to obtain the finished fiber pipe.

Wherein: the model cleaning process is to dissolve and remove the model body and latex surface layer in the semi-finished fiber pipe fittings with a chemical solvent that does not damage the fibers to obtain the finished fiber pipe fittings.

Compared with the prior art, the beneficial effect of the present invention is that the wall thickness of the finished fiber pipe fittings can be effectively controlled in the strapping processing procedure, so that it can be easily and quickly produced to meet various stable strength requirements (including different pipes) wall thickness) of fiber pipe fittings; and the simple bolt mold clamping mold is used independently, which can also avoid the standby man-hour loss and equipment cost of heating and cooling of the hydraulic cylinder mold clamping machine, which helps to improve economic benefits

Description of drawings

Fig. 1 is a schematic flow chart of the processing procedure of the method of the present invention;

Fig. 2 is a schematic view of the appearance of an embodiment of the method model body of the present invention;

Fig. 3 is the appearance schematic diagram that the latex surface layer of the present invention is coated on the outside of the model body;

Fig. 4 is the cross-sectional schematic diagram that the latex surface layer of the present invention is coated on the outside of the model body;

Fig. 5 is the embodiment that the inventive method latex surface wraps fiber material band;

Fig. 6 is the state schematic diagram that the surface layer of the latex of the present invention completes the winding of the fiber material band and is placed in the mould;

Fig. 7 is a schematic diagram of the fiber strip being matured and the semi-finished pipe fitting completed by the method of the present invention.

Explanation of reference numerals: model body 10; latex surface layer 11; air filling port 110; fiber material belt 12; mold 20; heat source 21; semi-finished pipe fitting 30.

Detailed ways

A continuous special-shaped fiber pipe molding method, as shown in Figures 1 and 2, is to get expanded polystyrene (EPS) material, and make a model body 10 in the model making program; first, the entire outside of the model body 10, such as Fig. 1, 3, 4, by dipping (dipping) coating a high temperature resistant synthetic latex surface layer 11 by the latex impregnation coating processing procedure, and reserve at least one inflation port 110; Belt processing program, the fiber material belt 12 is tightly wound on the surface of the latex surface layer 11, and placed in a simple mold 20 for bolt clamping to heat, and the curing process is carried out; as shown in Figures 1 and 7, along with the fiber material belt 12 curing process Heat and melt to form a fiber material with a degree of freedom (the fiber material with a degree of freedom means that the fiber material is like clay and has plasticity) and the effect of shrinkage of the model body 10 when it is heated at a high temperature, supplemented by an inflatable process , be filled with high-pressure gas by the inflation port 110 (not shown) of latex surface layer 11, make fibrous material material be pushed to the mold cavity surface of mold 20 by the expansion of latex surface layer 11 and carry out ripening; At the point in time) the cooling and shaping process of cooling the mold 20 will make the semi-finished fiber pipe fitting 30 formed in the mold cavity of the mold 20; finally, the semi-finished fiber pipe fitting 30 is taken out by opening the mold, and then through the model cleaning process, the reduced size The model body 10 and the latex surface layer 11 are cleaned up to obtain the finished fiber pipe fittings; the wall thickness of the finished fiber pipe fittings (as shown in Figure 5) can be effectively controlled in the strapping processing procedure, so that simple and rapid production can meet various stability requirements. Fiber pipe fittings with high strength requirements (including different pipe wall thicknesses); and simple molds for bolt clamping are used independently (as shown in Figures 6 and 7), which can also avoid the standby man-hour loss and equipment cost of heating and cooling of the hydraulic cylinder clamping machine , contribute to the improvement of economic efficiency.

According to the above-mentioned embodiment, wherein, as shown in Figures 1 and 2, the described model making procedure is to take polystyrene material and place it in a foaming mold to mold and make a model body 10 made of expanded polystyrene (EPS) material, according to A large amount of consumable demand in the production of pipe fittings can be provided by mass production.

According to the above-mentioned embodiment, wherein, as shown in Figures 1, 3 and 4, the described latex impregnation and coating process is to place the model body 10 into a synthetic latex impregnation tank for impregnation, and to impregnate (dipping) coating after curing A high-temperature-resistant synthetic latex surface layer 11, and an air filling port 110 is opened at one end of the coated latex surface layer 11; by virtue of the non-bonding between the synthetic latex surface layer 11 and the expanded polystyrene (EPS) material model body 10 when heated , as shown in Figures 6 and 7, the model body 10 is heated and shrinks, and high-pressure gas can be inflated in the latex surface layer 11 from the inflation port 110 (not shown).

According to above-mentioned embodiment, wherein, as Fig. 1, 5, described bandage processing program, is that continuous fibrous material band 12 is tightly wound on the surface of latex surface layer 11, by the belt body of described fibrous material band 12 Change the thickness or increase or decrease the number of windings back and forth or increase the amount of winding locally, so that the thickness of the entire or part of the surface of the latex surface layer 11 can be changed or adjusted, so that all or part of the fiber pipe is formed. Part of the pipe wall thickness can be easily controlled, and the production of finished pipe fittings can meet the stability requirements of various strengths.

According to above-mentioned embodiment, wherein, as Fig. 1,5, described bandage processing procedure, is that continuous fiber material band 12 is tightly wound on the surface of latex surface layer 11, and the acquisition of described fiber material band 12 is The fiber cloth is pre-impregnated with resin to form a flexible fiber sheet, and then processed by a belt splitting machine into a flexible fiber material belt 12 of broadband and thin belt specifications; Large-area fast winding, supplemented by fine fiber material tape (not shown in the figure) for detail or reinforcing or decorative or repairing winding, according to the latex surface layer 11 to obtain fiber material tape 12 tightly wound, which is beneficial to various special-shaped fiber pipes Forming, and the strength requirements of each part have good stability; moreover, the above-mentioned fiber cloth is pre-impregnated with resin to form a flexible fiber sheet, and the fiber cloth can be carbon fiber cloth or glass fiber cloth. The flexible fiber material belt 12 that belt machine divides can be carbon fiber material belt or glass fiber material belt.

According to above-mentioned embodiment, wherein, as Fig. 1,6,7, described ripening processing procedure, be the simple and easy type mold 20 that prepares a plurality of bolt clamping molds, each model body 10 outer latex surface layer 11 surfaces-finish the fiber material belt 12 winding, that is, placing it in a simple mold 20, using the heat source 21 on the mold 20 to mature and heat the fiber material strip 12 at a temperature of 130°C to 150°C, and to cool and shape it. The whole process is independently divided, and is The molds are reused to obtain economic benefits during the alternate procedure of completion of the pipe semi-finished product 30; and the heat source 21 on the mold 20 can be an electric heating pipe or a heat medium pipe that circulates in and out of hot coal.

According to the above-mentioned embodiment, wherein, as shown in Figures 1 and 7, the model cleaning process described is to mechanically destroy and remove the model body 10 and latex surface layer 11 in the semi-finished fiber pipe fitting 30 to obtain the finished fiber pipe fitting; The chemical solvent that damages the fiber dissolves and removes the mold body 10 and the latex surface layer 11 in the semi-finished fiber pipe 30 to obtain the finished fiber pipe.

The above description is only illustrative of the present invention, rather than restrictive. Those of ordinary skill in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined in the claims, but All will fall within the protection scope of the present invention.

Claims (10)

1. A continuous special-shaped fiber pipe fitting molding method is characterized in that: get expanded polystyrene (EPS) material, make model body in model making program; First, the whole outside of model body is impregnated with latex Covering process (impregnation dipping) covers a high-temperature-resistant synthetic latex surface, and reserves at least one air-filled port; next, through the strapping process, the fiber material tape is tightly wound on the surface of the latex surface, and put into the bolt lock The simple mold is heated in the mold, and the curing process is carried out; as the fiber material is heated and melted during the curing process, it becomes a fiber material with a degree of freedom, and the effect of shrinking the shape of the model body when it is heated at high temperature, supplemented by an inflatable process. The inflation port of the latex surface is filled with high-pressure gas, so that the fiber material is pushed by the expanded latex surface to the cavity surface of the mold for curing; the cooling and shaping process of timely cooling of the mold makes the cavity of the mold mature. The semi-finished fiber pipe fittings; finally, open the mold to take out the semi-finished fiber pipe fittings, and then go through the model cleaning process to clean out the reduced model body and latex surface, and then get the finished fiber pipe fittings. 2. The method for forming continuous special-shaped fiber pipe fittings according to claim 1, characterized in that: said model making program is to take polystyrene material and place it in a foaming mold to mold and make expanded polystyrene (EPS) ) material model body, which can be mass-produced to provide a large amount of consumable demand for pipe fittings production. 3. The method for forming continuous special-shaped fiber pipe fittings according to claim 1, characterized in that: the latex combined dipping and coating process is to put the model body into a synthetic latex impregnation tank for dipping, and cure it Dipping covers a high-temperature-resistant synthetic latex surface layer, and an air-filled port is opened at one end of the coated latex surface layer; by virtue of the fact that the synthetic latex surface layer and the expanded polystyrene (EPS) material model body are not bonded to each other when heated The model body shrinks when heated, and the high-pressure gas can be inflated from the inflation port to the latex surface. 4. The method for forming continuous special-shaped fiber pipe fittings according to claim 1, characterized in that: said bandage processing procedure is to tightly wrap continuous fiber material bands on the surface of the latex surface, and said fiber Change the thickness of the tape body or increase or decrease the number of windings back and forth, or increase the amount of winding locally, so as to change or adjust the thickness of the fiber tape on all or part of the surface of the latex surface layer, so that when the fiber pipe is formed All or part of the pipe wall thickness can be easily controlled, and the production of finished pipe fittings can meet the stability requirements of various strengths. 5. The method for forming continuous special-shaped fiber pipe fittings according to claim 1, characterized in that: said bandage processing procedure is to continuously wrap the fiber material band tightly on the surface of the latex surface, and said fiber material The belt is obtained by pre-impregnating the fiber cloth with resin into a flexible fiber sheet, and then processing it into a flexible fiber material belt with broadband and thin belt specifications by a belt splitter; The surface layer is used for large-area fast winding, supplemented by fine fiber material tapes for detail or reinforcing or decorative or repairing winding. According to the latex surface layer, the fiber material tape is tightly wound, which is beneficial to the forming of various special-shaped fiber pipes, and each part Strength requirements, all have good stability. 6. The method for forming continuous special-shaped fiber pipe fittings according to claim 5, wherein the fiber cloth is pre-impregnated with resin to form a flexible fiber sheet, and the fiber cloth is carbon fiber cloth. 7. The method for forming continuous special-shaped fiber pipe fittings according to claim 5, wherein the fiber cloth is pre-impregnated with resin to form a flexible fiber sheet, and the fiber cloth is glass fiber cloth. 8. The method for forming continuous special-shaped fiber pipe fittings according to claim 1, characterized in that: the aging processing procedure is to prepare a plurality of simple molds for clamping bolts, and as soon as the surface of the outer latex surface of each model body is completed Winding of the fiber material tape, that is, placed in a simple mold, the heat source on the mold is used to mature the fiber material tape at a temperature of 130 ° C to 150 ° C, and to cool and shape it. The whole process is independently divided, and it is in the pipe fittings Economic benefits are obtained by reusing molds during alternate procedures for the completion of semi-finished products. 9. The method for forming continuous special-shaped fiber pipe fittings according to claim 1, characterized in that: said model cleaning process is to mechanically destroy and remove the model body and latex surface layer in the semi-finished fiber pipe fittings to obtain the finished fiber pipe fittings . 10. The method for forming continuous special-shaped fiber pipe fittings according to claim 1, characterized in that: said model cleaning process is to dissolve and remove the model body and latex surface layer in the semi-finished fiber pipe fittings with a chemical solvent that does not damage the fibers. Obtain the finished fiber pipe fittings.

Images