CN211591605U

CN211591605U - Low expansion rate fiberboard

Info

Publication number: CN211591605U
Application number: CN201922005825.3U
Authority: CN
Inventors: 江士杰; 宋长豪; 赵鑫
Original assignee: Zhejiang Lixiang Wood Co ltd
Current assignee: Zhejiang Lixiang Wood Co ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-09-29
Anticipated expiration: 2029-11-19

Abstract

The utility model discloses a low expansion rate fiberboard, which comprises a fiberboard body (10), wherein solid wood surface boards (20) are respectively arranged on the upper surface and the lower surface of the fiberboard body (10), and waterproof paint is arranged on the side surface of the fiberboard body (10); the upper surface and the lower surface of the fiberboard body (10) are both provided with scattered grooves (11), and the surface of the solid wood is provided with stop blocks (21) clamped in the scattered grooves (11); the scattered grooves (11) are formed by interweaving mutually perpendicular subslots. The utility model discloses have moisture resistance difficult warpage on the basis that the cost is lower relatively, the better characteristics of nail-holding power simultaneously. Furthermore, the utility model discloses a processing requirement is low, and assembly fault tolerance is good.

Description

Low expansion rate fiberboard

Technical Field

The utility model relates to a low expansion rate fibreboard, especially a low expansion rate wood fibre composite board.

Background

The fiber board is an artificial board formed by interweaving lignocellulose fibers and utilizing the inherent adhesive property of the wood fiber board. Because wood fiber or other plant cellulose fiber is scattered and then reset, various wood leftover materials and small-sized wood can be used as raw materials. Therefore, the cost of the fiber board is lower than that of a solid wood board, and the mechanical property is better than that of a particle board bonded by large particles due to high density. However, there are problems with fiberboard. The problem of moisture absorption and expansion is solved, and the wood fibers are scattered and then bonded, so that the wood fibers do not have the relatively uniform fiber orientation, and the problem of warping and deformation of the board due to the expansion force difference is easy to occur after the fiber board absorbs moisture. Secondly, after the fiber board is nailed, the fiber at the nail hole is loosened under stress, the fiber is easy to fall off, and the nail holding force is not strong.

Therefore, the design of the fiber composite board which is moisture-proof, not easy to warp and has better nail-holding power is a problem to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low expansion rate fibreboard. The utility model discloses have moisture resistance difficult warpage on the basis that the cost is lower relatively, the better characteristics of nail-holding power simultaneously.

The technical scheme of the utility model: a low-expansion-rate fiberboard comprises a fiberboard body, wherein solid wood surface boards are arranged on the upper surface and the lower surface of the fiberboard body, and waterproof paint is arranged on the side surface of the fiberboard body; the upper surface and the lower surface of the fiberboard body are provided with scattered grooves, and the surface of the solid wood is provided with stop blocks clamped in the scattered grooves; the scattered grooves are formed by interweaving mutually perpendicular subslots.

In the low expansion rate fiberboard, the loose grooves and the stop blocks are in clearance fit.

In the low expansion rate fiberboard, the ratio of the subslot to the stop block is 2: 1.

in the low expansion rate fiberboard, the stop blocks located on the same straight line are arranged at intervals, and the stop blocks located on different straight lines are not in contact with each other.

In the low expansion rate fiberboard, the bottom surface of the scattering groove is arc-shaped.

Compared with the prior art, the utility model discloses a compound with density board and solid board, under the condition that keeps density board price advantage, utilize composite construction between them to promote moisture resistance and hold the nail ability. Specifically, the net-shaped scattering grooves have two functions: firstly, the water vapor diffusion device is used as a channel to play a diffusion role, so that the phenomenon that the permeated water vapor is gathered in a small area, the local moisture absorption is effectively slowed down, and the problem of expansion and warping caused by strong difference between the water vapor and the surrounding area is solved; secondly, the surface of the fiber board is integrally divided into a plurality of small blocks, so that stress concentration caused by moisture absorption and expansion is relieved, and the deformation of expansion is reduced by matching with the stop blocks. The solid wood surface plate improves the surface aesthetic degree of the product, reduces the expansion rate of the fiber board through the stop block structure by utilizing the self moisture resistance, and is also used as a main stress part of the holding nail, and the stop block area with larger thickness has the best holding nail performance.

Furthermore, the stop block and the scattered groove which are in clearance fit can reduce the processing requirement and the assembling requirement.

Furthermore, the number ratio of the sub-grooves to the stop blocks ensures that the vacant sub-grooves are used as complete water vapor diffusion channels, and the smaller number of the stop blocks can reduce the requirement on the processing precision of the solid wood.

Furthermore, the structure that the dog set up for the interval can further reduce wood machining precision requirement, avoids the locating problem of crossing of dog and scattered groove, promotes the fault-tolerant rate of solid board and limiting plate laminating.

Furthermore, the arched groove bottom has higher strength, and the influence on the strength of the fiber board is reduced.

To sum up, the utility model discloses have moisture resistance and be difficult for warping on the basis that the cost is lower relatively, the better characteristics of nail-holding power simultaneously. Furthermore, the utility model discloses a processing requirement is low, and assembly fault tolerance is good.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural diagram according to the first embodiment;

fig. 3 is a schematic structural diagram of the second embodiment.

Reference numerals: 10-fiberboard body, 11-scattering groove, 20-solid wood surface board and 21-stopping block.

Detailed Description

The present invention will be further described with reference to the following examples, which are not intended as a limitation to the present invention.

The first embodiment is as follows: a low expansion rate fiberboard is composed of a fiberboard body 10, solid wood surface plates 20 glued on the upper and lower surfaces of the fiberboard body 10, and waterproof paint arranged on the side surfaces of the fiberboard body 10, as shown in figure 1. The glue and the waterproof paint are both commercially available woodware glue and woodware waterproof paint, and are not described in detail herein.

The upper and lower surfaces of the fiberboard body 10 are both provided with scattering grooves 11, the scattering grooves 11 are interlaced by mutually perpendicular sub-grooves to form a net shape, and the bottom surfaces of the scattering grooves 11 are arc-shaped. The solid wood surface is provided with a stop block 21 clamped in the scattering groove 11, as shown in fig. 2, the stop block 21 is also in a net shape. The stop blocks 21 are in clearance fit, the scattered grooves 11 divide the surface of the fiber board into a plurality of rectangular blocks, and the corners of the rectangular blocks are provided with chamfers or fillets.

The ratio of the subslot to the stop 21 is 2: 1, namely the number ratio of the subslot clamped with the stop block 21 to the empty subslot is 1: 1.

example two: the structure of the present embodiment is basically the same as that of the first embodiment, except that the stops 21 on one straight line are arranged at intervals, as shown in fig. 3, and are not continuous, and the stops 21 on different straight lines are not in contact with each other. At the moment, the solid wood surface is easier to process, and chamfers or fillets do not need to be additionally processed on the corners of the rectangular blocks.

When the water-vapor diffusion device is used, the diffusion grooves 11 are used as diffusion channels on one hand, so that the phenomenon that the permeated water vapor is gathered in a small area, the local moisture absorption is effectively slowed down, and the problem of expansion and warping caused by strong difference between the water vapor and the surrounding area is solved. On the other hand, the scattering grooves 11 divide the surface of the fiber board into a plurality of small pieces from the whole, reduce stress concentration due to hygroscopic expansion, and reduce the amount of expansion deformation in cooperation with the stoppers 21.

The solid wood surface plate 20 not only improves the surface aesthetic degree of the product, but also reduces the expansion rate of the fiber board through the stop block 21 structure by utilizing the self moisture resistance performance, and is also used as a main stress part of the holding nail, and the stop block 21 area with larger thickness has the best holding nail performance.

The stop block 21 and the scattered groove 11 which are in clearance fit can reduce the processing requirement and the assembly requirement. The number ratio of the subslot to the stop block 21 ensures that the vacated subslot is used as a complete water vapor diffusion channel, and the smaller number of the stop blocks 21 can reduce the requirement of solid wood processing precision. The structure that the dog 21 set up for the interval can further reduce the wood machining precision requirement, avoids the locating problem of crossing of dog 21 and scattered groove 11, promotes the fault-tolerant rate of solid board and limiting plate laminating. The arched groove bottom has higher strength, and the influence on the strength of the fiber board is reduced.

Claims

1. A low expansion fiberboard, characterized in that: the wood-plastic composite board comprises a fiberboard body (10), wherein solid wood surface plates (20) are arranged on the upper surface and the lower surface of the fiberboard body (10), and waterproof paint is arranged on the side surface of the fiberboard body (10); the upper surface and the lower surface of the fiberboard body (10) are both provided with scattered grooves (11), and the surface of the solid wood is provided with stop blocks (21) clamped in the scattered grooves (11); the scattered grooves (11) are formed by interweaving mutually perpendicular subslots.

2. A low expansion fiberboard according to claim 1, wherein: the scattered groove (11) is in clearance fit with the stop block (21).

3. A low expansion fiberboard according to claim 1, wherein: the ratio of the subslot to the stop block (21) is 2: 1.

4. a low expansion fiberboard according to claim 1, wherein: the stop blocks (21) positioned on the same straight line are arranged at intervals, and the stop blocks (21) positioned on different straight lines are not contacted with each other.

5. A low expansion fiberboard according to claim 1, wherein: the bottom surface of the scattering groove (11) is arc-shaped.