1. A method for forming an organic glass curved surface based on steel rope tension is characterized by comprising the following steps:

a. preparation of production: preparing a forming die, a tempering die, an oven, a tension driving device and a tension clamping plate connected with the tension driving device through a steel rope to be used;

b. installation: installing a forming die in an oven, installing a tension clamping plate on glass, screwing each bolt on the tension clamping plate, placing the glass on the forming die after checking that no abnormity exists, and aligning the glass to the position of a central bus;

c. checking before starting up: checking whether a switch of an oven system, a heating system and a tension driving device of a steel rope normally operate or not;

d. and (3) processing and forming: starting the oven, setting a temperature curve required by the product, preserving heat as required after the temperature is raised to the specified temperature of the product, and applying tension by a tension driving device of the steel rope until the glass is attached to the molded surface of the forming mold;

e. and (3) cooling: when the temperature in the oven is reduced, the steel rope and the tension clamping plate are dismounted;

f. tempering treatment: cleaning a tempering mold, placing glass on the tempering mold, enabling the glass to be attached to the periphery of the tempering mold, heating an oven to a corresponding temperature according to tempering process parameters corresponding to a product, and preserving heat for a corresponding time according to requirements to finish a tempering process.

2. The method for forming a curved surface of organic glass based on steel cord tension as claimed in claim 1, wherein in step b, before the glass is mounted on the forming mold, the forming mold is wiped clean with a lint, and a layer of lint is laid on the forming mold.

3. The method for forming a curved surface of organic glass based on steel rope tension as claimed in claim 1, wherein in said step b, tension clamping plates are installed on at least two sides of the glass, and at least two tension clamping plates are installed on one side.

4. The method for forming a curved organic glass surface based on the steel rope tension as claimed in claim 1, wherein in the step e, the tension clamping plate is disassembled after the temperature in the oven is reduced to below 40 ℃.

Background

The aviation organic glass is an organic transparent structural material used for parts such as a canopy, a windshield, an engine room, a porthole and the like of an airplane; the plate-shaped product is prepared by using methyl methacrylate as a main body and adopting a bulk polymerization method, is molded and processed into a transparent piece, and is installed on an airplane. It has excellent optical, strength, heat resistance, ageing resistance and ultraviolet ray resistance, and especially has small optical distortion and angular displacement. The compression strength, the impact strength and the bending strength of the organic glass are all higher than those of common organic glass. Especially, the impact strength of the oriented plate is more than twice of that of the common organic glass plate, and the oriented plate also has high silver mark resistance and crack propagation resistance. The use as an aircraft cockpit cover prevents sudden air bursts.

At present, in the process of producing aviation organic glass, the prior art adopts a manual tension mode to complete a forming process, glass is attached to the shape surface of a mold by manpower after the glass reaches a softening point, and due to the fact that force difference exists among personnel, the mode easily causes forming failure due to uneven stress, partial attaching degree of a product is insufficient, the problems that the shape and the angle of the formed product do not reach the standard and the like are caused, the production efficiency is low, and the quality of the product is also reduced.

Disclosure of Invention

The invention aims to:

in order to solve the problem that in the prior art, in an aviation organic glass forming process, glass is formed by manual pulling in a non-uniform stress manner, so that forming failure is easy to occur, a method for forming an organic glass curved surface based on steel rope tension is provided.

The technical scheme adopted by the invention is as follows:

a method for forming an organic glass curved surface based on steel rope tension comprises the following steps:

a. preparation of production: preparing a forming die, a tempering die, an oven, a tension driving device and a tension clamping plate connected with the tension driving device through a steel rope to be used;

b. installation: installing a forming die in an oven, installing a tension clamping plate on glass, screwing each bolt on the tension clamping plate, placing the glass on the forming die after checking that no abnormity exists, and aligning the glass to the position of a central bus;

c. checking before starting up: checking whether a switch of an oven system, a heating system and a tension driving device of a steel rope normally operate or not;

d. and (3) processing and forming: starting the oven, setting a temperature curve required by the product, preserving heat as required after the temperature is raised to the specified temperature of the product, and applying tension by a tension driving device of the steel rope until the glass is attached to the molded surface of the forming mold;

e. and (3) cooling: when the temperature in the oven is reduced, the steel rope and the tension clamping plate are dismounted;

f. tempering treatment: cleaning a tempering mold, placing glass on the tempering mold, enabling the glass to be attached to the periphery of the tempering mold, heating an oven to a corresponding temperature according to tempering process parameters corresponding to a product, and preserving heat for a corresponding time according to requirements to finish a tempering process.

Further, in the step b, before the glass is installed on the forming mold, the forming mold is wiped clean by lint, and a layer of lint is laid on the forming mold.

Further, in the step b, the tension clamping plates are arranged on at least two sides of the glass, and at least two tension clamping plates on one side are arranged.

And furthermore, in the step e, the tension clamp plate is disassembled after the temperature in the oven is reduced to below 40 ℃.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

the invention provides a method for forming glass by adopting a steel rope and tension splints, wherein the tension driving device can use a motor and other driving devices, so that automatic tension forming of equipment is realized.

According to the invention, a layer of flannelette is arranged between the forming mold and the glass to be processed, so that a certain buffer effect can be provided, and meanwhile, the phenomenon that the glass is scraped by the mold to generate traces, which influences the product quality, is avoided.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

A method for forming an organic glass curved surface based on steel rope tension comprises the following steps:

a. preparation of production: preparing a forming die, a tempering die, an oven, a tension driving device and a tension clamping plate connected with the tension driving device through a steel rope to be used;

b. installation: installing a forming die in an oven, installing a tension clamping plate on glass, screwing each bolt on the tension clamping plate, placing the glass on the forming die after checking that no abnormity exists, and aligning the glass to the position of a central bus;

c. checking before starting up: checking whether a switch of an oven system, a heating system and a tension driving device of a steel rope normally operate or not;

d. and (3) processing and forming: starting the oven, setting a temperature curve required by the product, preserving heat as required after the temperature is raised to the specified temperature of the product, and applying tension by a tension driving device of the steel rope until the glass is attached to the molded surface of the forming mold;

e. and (3) cooling: when the temperature in the oven is reduced, the steel rope and the tension clamping plate are dismounted;

f. tempering treatment: cleaning a tempering mold, placing glass on the tempering mold, enabling the glass to be attached to the periphery of the tempering mold, heating an oven to a corresponding temperature according to tempering process parameters corresponding to a product, and preserving heat for a corresponding time according to requirements to finish a tempering process.

Example 2

On the basis of the embodiment 1, preferably, in the step b, before the glass is installed on the forming mold, the forming mold is wiped clean by using lint, a layer of lint is laid on the forming mold, the tension clamping plates are installed on at least two sides of the glass, and at least two tension clamping plates on one side are installed. A layer of flannelette is placed between the forming die and the glass to be processed, so that a certain buffering effect can be provided, and meanwhile, the glass is prevented from being scraped by the die to form traces, and the product quality is prevented from being influenced.

Example 3

On the basis of the embodiment 1, preferably, in the step e, after the temperature in the oven is reduced to 30 ℃, the tension clamping plate is detached from the glass, and then the glass is taken out for subsequent tempering treatment, so that the secondary deformation of the glass is avoided.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.