CN101298154B

CN101298154B - Manufacturing process of build-in arced faced plywood for carriage

Info

Publication number: CN101298154B
Application number: CN200810050816XA
Authority: CN
Inventors: 宋连奎; 郭剑平
Original assignee: Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2008-06-11
Filing date: 2008-06-11
Publication date: 2010-06-16
Anticipated expiration: 2028-06-11
Also published as: CN101298154A

Abstract

The invention provides a manufacturing technology method for mounting an arc-shaped veneer plywood in a railway carriage, comprising: determining the widths of the upper bottom and the lower bottom of trapezium plywood assembly strips at the arc positions, coating polyvinyl acetate emulsion adhesive between the assembly strips and the straight plates, and between the assembly strips, auxiliary shaping by convex processing equipments, adding a stiffener at the end of the basic plywood, changing the direction of the upper and lower bottom of the plywood assembly strips from the thickness direction of the plywood to the width direction of the plywood, planning and grinding the external arc surface inside the basic plywood after assembling, pre-pressing and forming a bendable veneer plate of 0.8mm thickness under high temperature, and bonding the veneer plate to the plywood by superglue. The veneer plywood made by the invention has high strength, smooth veneer plate at the arc position, no tackless and no cracks, and satisfies the manufacture requirement of the arc-shaped veneer plywood and the quality requirement of the internal decoration of the railway carriage.

Description

The build-in arced faced plywood for carriage method of manufacturing technology

Technical field

The present invention relates to veneered plywood spare manufacturing technology, especially relate to a kind of build-in arced faced plywood for carriage method of manufacturing technology.

Background technology

At present, in arc veneered plywood spare is made, the undercapacity because circular arc substrate plywood use fluid sealant is bonding, circular arc substrate plywood inside and outside circle cambered surface is not repaired and is rough and uneven in surface, thick china arc surface and substrate plywood arc surface are misfitted and are influenced technical problems such as thick china adhesive strength, cause that circular arc veneered plywood spare intensity is low, circular arc place thick china injustice, come unglued and quality problems such as crackle, product quality, passenger vehicle manufacturing cost and manufacturing schedule are made a big impact.

Summary of the invention

Technical problem to be solved by this invention provides that a kind of intensity is low, circular arc place thick china is smooth, do not come unglued and the manufacturing process of flawless circular arc veneered plywood spare, improves the quality of products, and reduces the passenger vehicle manufacturing cost, improves manufacturing schedule.

For solving the problems of the technologies described above, the invention provides a kind of build-in arced faced plywood for carriage method of manufacturing technology, it is characterized in that comprising the following steps:

1, adopt the computer-assisted mapping technology that bottom width degree size about the trapezoidal glued board bar in the circular arc position of different angles is determined, make between bar and the bar, closely connected between bar and the straight plate glued board, guarantee the angle and the shape of spliced right angle or obtuse angle circular arc substrate plywood;

2, carry out the circular arc substrate plywood when piecing together system, smear poly-acetic acid second dilute emulsion adhesive between bar and straight plate, between bar and the bar, and connect with the vapour nail, vapour nail spacing is controlled at 65-70mm, the assembly system intensity of raising base material;

When 3, the splicing angle is the circular arc veneered plywood spare base material obtuse angle or larger-size, with the auxiliary typing of convex frock, guarantee circular shape accurately;

4, be the substrate plywood end increase 5mm or the thick circular arc glued board stiffening plate of 10mm of the circular arc veneered plywood spare obtuse angle or larger-size at angle, improve substrate plywood intensity;

5, change the direction of going to the bottom on the glued board bar into the glued board width by the glued board thickness direction, so that the thickness of bar is greater than straight plate glued board thickness 1-2mm, and then guarantee that there are enough trim amount at the splicing position, spliced substrate plywood inside and outside circle cambered surface shapes and mill is repaiied, make its smooth smooth, shape is accurate, and substrate plywood arc surface and thick china arc surface is matched;

6, bendable thick china high temperature pre-molding that 0.8mm is thick matches its arc surface and base material arc surface, improves the adhesive strength of thick china and substrate plywood;

7,, select for use seccotine to carry out bonding between thick china and the glued board for satisfying the requirement of arc veneered plywood spare adhesive strength.

The present invention is through the trial-production checking, arc veneered plywood spare manufacturing technology is ripe and demonstrate its favorable manufacturability, circular arc veneered plywood spare intensity height, circular arc place thick china is smooth, do not come unglued, flawless has satisfied the requirement of arc veneered plywood spare manufacturing and the quality requirement of passenger train upholstery.

Description of drawings

Fig. 1 is the substrate plywood splicing convex frock schematic diagram according to workpiece circular arc, the designed manufacturing of shape and size;

Fig. 2, Fig. 3 are the interior dress arc veneered plywood spare structural representation of the inventive method preparation.

The specific embodiment

With reference to Fig. 1,1 is the rear portion tie-beam, 2 is main work beam, 3 is the subtask beam, and 4 is anterior tie-beam, and each tie-beam and work beam material are the thick glued board of 20mm, tie-beam is fixedlyed connected and is integral with the work beam, work case bay 200-300mm, the front surface of circular arc limit, straight flange and the tie-beam 1,4 of

work beam

2,3 is the working face of convex frock, the datum level when also being the substrate plywood splicing.

With reference to Fig. 2, Fig. 3, the splicing substrate plywood is carried out on the convex frock, and operating procedure and method are as follows:

(1) earlier with trapezoidal 1 of glued board and straight plate glued board 3 splicings, again with trapezoidal with trapezoidal splicing, at last with trapezoidal with straight plate glued board 6 splicings, applying glue is bonding and connect with the vapour nail during splicing;

(2) the inside and outside circle cambered surface of trapezoidal 1 of spliced glued board is repaired, make it smooth smooth, and make arc surface tangent with the plane of straight plate glued board 3 and 6;

(3) add stiffening plate 7 in the substrate plywood end, applying glue is bonding and connect with vapour nail, afterwards stiffening plate 7 is repaired;

(4) with behind

thick china

4 and 5 pre-moldings,

thick china

4 and 5 is bonded in the substrate plywood surfaces externally and internally with seccotine;

(5) thick china after bonding 4 and 5 is repaired, just finished the manufacturing of arc veneered plywood spare.

Claims

1. a build-in arced faced plywood for carriage method of manufacturing technology is characterized in that comprising the following steps:

(1) adopt the computer-assisted mapping technology that bottom width degree size about the trapezoidal glued board bar in the circular arc position of different angles is determined, make between trapezoidal glued board bar and the trapezoidal glued board bar, closely connected between trapezoidal glued board bar and the straight plate glued board, guarantee the angle and the shape of spliced right angle or obtuse angle circular arc glued board base material;

(2) carrying out circular arc glued board base material pieces together when making, between trapezoidal glued board bar and the straight plate glued board, smear between trapezoidal glued board bar and the trapezoidal glued board bar and gather acetic acid second dilute emulsion adhesive, and connect with vapour nail, vapour nail spacing is controlled at 65-70mm, improves the assembly system intensity of circular arc glued board base material;

When (3) the splicing angle is the circular arc glued board base material obtuse angle or larger-size, with the auxiliary typing of convex frock, guarantee circular shape accurately;

(4) be that the circular arc glued board base material obtuse angle or larger-size end increases 5mm or the thick circular arc glued board stiffening plate of 10mm at angle, improve circular arc glued board substrate intensity;

(5) change the direction of going to the bottom on the trapezoidal glued board bar into the glued board width by the glued board thickness direction, so that the thickness of trapezoidal glued board bar is greater than straight plate glued board thickness 1-2mm, and then guarantee that there are enough trim amount at the splicing position, spliced circular arc glued board base material inside and outside circle cambered surface shapes and mill is repaiied, make its smooth smooth, shape is accurate, and circular arc glued board base material arc surface and thick china arc surface is matched;

(6) bendable thick china high temperature pre-molding that 0.8mm is thick matches its arc surface and circular arc glued board base material arc surface, improves the adhesive strength of thick china and circular arc glued board base material;

(7), select for use seccotine to carry out bonding between thick china and the circular arc glued board base material for satisfying the requirement of arc veneered plywood spare adhesive strength;

The convex frock comprises rear portion tie-beam, main work beam, subtask beam, anterior tie-beam, each tie-beam and work beam material are the thick glued board of 20mm, tie-beam is fixedlyed connected and is integral with the work beam, work case bay 200-300mm, the front surface of circular arc limit, straight flange and the tie-beam of work beam is the working face of convex frock, the datum level when also being the splicing of circular arc glued board base material.