CN1010929B - Expansion bush die for mfg. cavity plywood - Google Patents

Abstract

The present invention relates to an expansion lining die for manufacturing an artificial hollow plate, which adds a set of novel die on an original production line for manufacturing artificial hollow plates to manufacture the artificial hollow plates. The artificial hollow plates can effectively lighten volume weight, improve service performance and enlarge the application field of the artificial hollow plates. In the set of novel die, a set of steel lining plates are added on an original flat plate and a press plate and the set of novel die is called as the expansion lining die.

Description

Expansion bush die for mfg. cavity plywood

What the present invention relates to is to utilize the flat-press process mode to make the dull and stereotyped pressing plate and the parts of cavity plywood on the existing equipment on dull and stereotyped pressing plate.

The string matter wood-based plate of present domestic employing flat-press process production all is the dull and stereotyped sheet material of entity, the fiberboard of particieboard or middle density etc. for example, and its mode of production is after the stone, to make it to become artificial board through the hot pressing supervisor on flat-die.Therefore the unit weight of this artificial board is generally 0.55 to 0.75 gram/cubic centimetre, often compares with other general sheet materials in the use then and can not get extensive use because of himself weight is excessive.In order to solve the bigger problem of artificial board unit weight, can adopt a kind of interior empty outer real artificial board is the cavity plywood material.But, on dull and stereotyped pressing plate, is engaged in the making of this sheet material and need uses special mould, and the uniform strength to sheet material of selecting for use of mould has crucial influence.Through practice, the stationary state mould can not be used to make cavity plywood, and reason is that the material above the stationary state mould and its compression factor of the material between the mould differ greatly in the hot-pressing process, can't guarantee that the intensity of cavity plywood has uniformity.

The purpose of this invention is to provide a kind of expansion bush die of on existing equipment, making cavity plywood with the flat-press process mode of production.It mainly is made up of dull and stereotyped pressing plate, steel liner plate and a plurality of punch of being arranged on the liner plate.Punch is telescopic, forms in the sheet material process consistent by the flexible unit weight trend of sheet material each several part of impelling at material through hot pressing.Guarantee the uniformity of timber intensity, do not changed the existing used rated pressure of hot press simultaneously again.

Task of the present invention realizes by following mode: utilize the equipment on original production line, set up the steel liner plate that one deck has the extension type mold structure on multilayer overlaps the steel plateform pressing plate of producing wood-based plate.Like this, telescopic mould and steel liner plate have been formed the expansion bush die structure (as shown in Figure 4) of making the cavity plywood material on the steel plateform pressing plate.Steel liner plate can require to be provided with the base hole clipping according to the consumption and the arrangement of telescopic mould.Mould is stuck in the hole clipping, and mould just can not be shifted (as shown in Figure 3) in stone and hot pressing.In another effect of placing steel liner plate on the dull and stereotyped pressing plate is to utilize steel liner plate and the pressing plate natural space between the two to get rid of the compressed air that material and mould are produced in compression process, so that the assurance board quality.In order to get rid of compressed air, a hole need be set on the base of telescopic mould.Be arranged in telescopic mould on the steel liner plate because of on steel liner plate, being convex and being specifically designed to the hollow that forms sheet material, therefore be called punch (as shown in Figure 4), this telescopic punch outer shape can make different specifications on demand, as square, rectangle, prismatic or circle.Round punch processing is the most convenient, use also very desirable, its structure is made up of parts such as end deck, telescopic, compression spring and chassis, its flexible feature is that the elongation of slip and compression spring by telescopic realizes, has constituted the telescopic retractable hollow punch (as shown in Figure 3) of sealing.The expansion bush die that is made of protruding film and steel lining mould is when work, utilize the effect of spring, under the pressure of hot press, progressively telescopic is compressed successively, material above it along with the mobile gap of having dwindled compression ratio between each position of artificial board that compression produced of mould, has guaranteed the uniformity (as shown in Figure 4) of timber intensity in extrusion process.Treat that hot pressing finishes, after pressing plate leaves, the spring tension of pattern tool is with telescopic jack-up, just wood-based plate is propped up and separation with it from liner plate thereupon, this moment, one side was that the wood-based plate that plane (outer surface of sheet material) one side has a hole of caving in is just finished, and this piece plate just is 1/2nd of a standard plate thickness.Two blocks of such sheet materials are superimposed relatively, and applying glue is bonding, has just formed to have had the lighter cavity plywood of certain intensity and unit weight.

Below with reference to accompanying drawing embodiments of the invention are described further:

Fig. 1 expansion bush die elevational schematic view

Fig. 2 expansion bush die floor map

Punch structural map in Fig. 3 expansion bush die

The view of Fig. 4 expansion bush die part before and after compression

With reference to accompanying drawing, structure of the present invention is made of dull and stereotyped pressing plate (1) steel liner plate (2) and telescopic punch.At first on the dull and stereotyped pressing plate (1) of existing equipment, stack one deck steel liner plate (2), be processed with the hole clipping of placing telescopic punch on the steel liner plate (2) on request.Treat telescopic punch all be stuck in promptly form expansion bush die in the hole clipping of steel liner plate (2) after, just can material (9) be layered on the lining mould by designing requirement, deliver to then and carry out hot pressing in the hot press and become a useful person.The base of telescopic punch (8) is processed with steam vent, is used for getting rid of material (9) and punch because of compressing the compressed air that is produced.The structure of telescopic punch is made up of chassis (3), telescopic (4) (5), lamina tecti telescopic (6), compression spring (7) and base (8), its assembly program is earlier chassis (3) to be inverted, then arrogant and young pathbreaker's telescopic (4) (5) and lamina tecti telescopic (6) are packed within the cavity of chassis (3) in order, pack into after compression spring (7), with end bearing lamina tecti telescopic (6) on the spring, the lower end is bearing in the medium position of base (8), then base (8) and chassis (3) is connected as a single entity with the screw thread mode.The dismounting mode is with above-mentioned opposite.Consider the routing motion mode and the tension force of compression spring (7) in punch of extensible member, the circumferential defining flange retaining of the level that the inner top side of chassis (3) and telescopic (4) (5) need be processed into mouth, the circumferential defining flange retaining of level mouth is processed in the lower end, the outside of telescopic (4) (5) and lamina tecti telescopic (6), in case telescopic is because of the tension force disengaging mutually of compression spring (7).Lamina tecti telescopic (6) is a planar surface encloses shape, is used to stop that material enters mould and bears pressure that hot press gives and the mould inner pressure tension force that spring (7) discharged that contracts.Inboard end opening in chassis (3) and base (8) limit portion surface all are processed with the spiral shell button that is rotatably connected.The circumferential deck of square is processed in the lower end in the outside, chassis (3), is used for (see figure 3) in the hole clipping of mould fixing on steel liner plate (2) itself.45# tool steel is generally adopted in the making of telescopic punch.Except that compression spring (7) and base (8), miscellaneous part is owing to be parts slidably movingly, so must carry out Treatment of Metal Surface, to strengthen its wearability and anti-corrosive properties.Its fineness of the outer surface of parts and mating surface is

6～

7, tolerance fit according to the shape of mould, size by allowance for finish movingly standard suitably select for use.With reference to Fig. 4, expansion bush die behind the stone is when hot press pressurizes, its telescopic punch is just from bottom to up one by one in the cavity of retraction chassis (3), up to all retractions fully of all telescopics, compression spring (7) and mould all reach compressed limiting condition in the chamber, and sheet material (10) also reaches design size thickness.

In addition, through the telescopic punch of reasonable Arrangement, can produce the wood-based plate seriation semi-finished product of all size by the difference requirement, then semi-finished product just can directly be become the series of products that need on the market through cementation laminated and the processing of limit portion, thereby the scope of application that has shortened by wood-based plate promptly expanded to the product of using in the various industrial circles by the original main product for civilian use of making.Door-plate with 1900mm * 790mm * 35mm is an example, adopts its porosity of this cavity plywood can reach 35%, and unit weight is by the 30kg/m of real core wood-based plate ³Be reduced to the 19.5kg//m of cavity plywood ³The cavity plywood economic benefit that expansion bush is molded into is very remarkable, under the situation that guarantees plate property, can save material 1/3rd.Because cavity plywood has alleviated deadweight, its social benefit can't be weighed with economic indicator, aspect the use of fiber artificial board replacing wood significant reduction effect is being arranged.

Claims (5)

1, a kind of device of producing string matter wood-based plate with the flat-press process mode on existing equipment is promptly made the expansion bush die of cavity plywood, it is characterized in that expansion bush die is made of dull and stereotyped pressing plate (1), steel liner plate (2) and telescopic punch, stack one deck steel liner plate (2) on the dull and stereotyped pressing plate (1), steel liner plate (2) has hole clipping.Fix telescopic punch in the hole clipping, the quantity of hole clipping is provided with according to the usage quantity of telescopic punch.

2, the expansion bush die of making cavity plywood according to claim 1, it is characterized in that telescopic punch is by chassis (3), telescopic (4), (5), lamina tecti telescopic (6), compression spring (7) and base (8) constitute, be equipped with in the chassis (3) with the telescopic (4) (5) of going up lower block and the telescopic (6) that has lamina tecti and lower block, compression spring (7) is arranged in the cavity on chassis (3), compression spring (7) is gone up end bearing lamina tecti telescopic (6), the lower end is bearing on the base (8), and base (8) is connected as a single entity with screw thread with chassis (3).

3, the expansion bush die of making cavity plywood according to claim 2 is characterized in that whole telescopic punch is a sealing sleeve formula convex telescopic mould.

4, the expansion bush die of making cavity plywood according to claim 2 is characterized in that base (8) is provided with exhaust hole.

5, according to the expansion bush die of claim 1 or the described making cavity plywood of claim 2, the lower end, the outside that it is characterized in that chassis (3) processes rectangular circumferential deck, and telescopic punch fixes in the hole clipping of steel liner plate (2) by the circumferential deck on its chassis (3).

Images