CN112081342A

CN112081342A - Impact-resistant splice plate

Info

Publication number: CN112081342A
Application number: CN202010787994.1A
Authority: CN
Inventors: 孙亚平
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2020-12-15

Abstract

The invention belongs to the technical field of floors, and particularly discloses an impact-resistant splice plate which comprises a core layer, a surface layer and a bottom layer, wherein the surface layer is arranged above the core layer, the bottom layer is arranged below the core layer, the core layer is formed by joggling a plurality of splice units, the splice units are formed by single finger joint or continuous finger joint of a plurality of splice blocks with the same width and thickness, and finger joint positions on adjacent splice units are distributed in a staggered manner; the joggling direction of the splicing units is vertical or substantially vertical to the finger joint direction, and the joggling of the adjacent splicing units is realized through the matching of tenons and mortises which are arranged in the length direction of the splicing units; balance layers are respectively arranged between the core layer and the surface layer and between the core layer and the bottom layer, and the balance layers are glass fiber mesh cloth or carbon fiber mesh cloth coated with thermoplastic elastomer materials; the upper surface and the lower surface of the core layer are provided with a plurality of sunken penetration parts. The splice plate has good impact resistance and high strength; moisture resistance and damp proofing; the structure stability is good, and the service life is long.

Description

Impact-resistant splice plate

Technical Field

The invention belongs to the technical field of floors, and particularly relates to an impact-resistant splice plate.

Background

Along with the rapid development of economy, the living standard of people is gradually improved, the consumption of wood is further increased, the price of wood products in China is increased, and the price of solid wood floors and multilayer solid wood composite floors taking precious tree species as wood skin is increased. In order to relieve the contradiction between supply and demand in the wood floor market and protect precious trees in China and realize sustainable development, how to apply leftover wood strips to wood floors becomes a priority of numerous wood floor manufacturers.

Also there are some manufacturers at present to produce the timber apron that forms by the concatenation of abandonment stuff, mostly are the finger joint board, and the finger joint board is assembled by the polylith plank and is formed, because adopt dentate interface between the plank, is similar to two fingers and alternately docks, so called finger joint board. The finger joint plate is provided with a plurality of tooth joint structures in the horizontal direction, so that the finger joint plate has better resistance to horizontal acting force, the vertical acting force can easily damage the tooth joint structures of the finger joint plate, and in the actual use process, the stress of the finger joint plate is mostly vertical impact force, so that the stability of the finger joint plate is poor, and the impact resistance level is not enough. The tooth joint structure is not only a weak point of stress, but also a point easy to damp, water easily extends into the board layer from the gap of the tooth joint structure, so that the distortion and the rapid aging of the finger joint board are caused, and the mechanical property is further weakened. Therefore, the service life of the existing finger joint plate is short, and the popularization and the application are difficult.

Chinese utility model patent CN208152475U discloses a high strength packaging finger joint board, which improves the whole compactness and strength by forming a package of a veneer layer and a flat batten opposite finger joint structure layer, enhances the whole bending resistance, effectively improves the stability of the finger joint structure layer, but the impact force received by the finger joint is directly transferred to the veneer layer, and the combination of the veneer layer and the finger joint structure layer can be slowly destroyed, resulting in the layering phenomenon; moreover, the waterproof capability of the finger joint plate is not obviously improved, and the splicing positions are many, so that the finger joint plate is easy to damp, deform and even delaminate in a high-humidity environment, and the service life of the finger joint plate is not long.

Disclosure of Invention

The invention aims to provide an impact-resistant splice plate, the main body of which is a finger joint plate, and the splice plate has high strength and good impact resistance; moisture resistance and damp proofing; the structure stability is good, and the service life is long.

In order to achieve the purpose, the invention adopts the following specific technical scheme:

an impact-resistant splice plate comprises a core layer, a surface layer and a bottom layer, wherein the surface layer is arranged above the core layer, the bottom layer is arranged below the core layer, the core layer is formed by joggling a plurality of splice units, the splice units are formed by single finger joint or continuous finger joint of a plurality of splice blocks with the same width and the same thickness, and finger joint positions on adjacent splice units are distributed in a staggered manner; the joggling direction of the splicing units is vertical or substantially vertical to the finger joint direction, and the joggling of the adjacent splicing units is realized through the matching of tenons and mortises which are arranged in the length direction of the splicing units. The length of the splicing blocks is various, and when the splicing blocks are assembled and selected, the finger joint positions of adjacent splicing units are distributed in a staggered manner as long as the overall lengths of different splicing units are consistent; the fact that the joggling direction and the finger joint direction of the splicing units are substantially perpendicular means that the vertical level of 90 degrees cannot be achieved in many times in actual processing, the fact that the splicing units are substantially perpendicular provides a deviation allowable range, and the fact that the splicing units are deviated from the left and right by 10 degrees belongs to the substantial perpendicular range.

Preferably, balance layers are respectively arranged between the core layer and the surface layer and between the core layer and the bottom layer; the balance layer is glass fiber mesh cloth or carbon fiber mesh cloth coated with thermoplastic elastomer materials. The thermoplastic elastomer material has good viscosity and waterproofness besides good elasticity.

Preferably, the thermoplastic elastomer material is TPU, and the TPU can be well combined with the glass fiber mesh cloth/carbon fiber mesh cloth, the core layer, the surface layer and the bottom layer.

Preferably, the aperture of the glass fiber mesh cloth or the carbon fiber mesh cloth is 0.5-3 mm.

Preferably, the upper surface and the lower surface of the core layer are provided with a plurality of sunken penetration parts, the penetration parts can be various in shape, size and distribution, and the patterns can be realized by replacing the licker-in rollers with different surface structures.

Preferably, adjacent splicing blocks are finger-jointed through the exposed teeth or the hidden teeth, and the splicing blocks of one splicing unit can be finger-jointed only through the exposed teeth, only through the hidden teeth, or alternatively finger-jointed through the exposed teeth and the hidden teeth.

Preferably, the shape of the light teeth or the dark teeth is square or zigzag.

Preferably, the thickness of the core layer is 1.2-1.8 cm, the thickness of the surface layer is 1.2-8 mm, and the thickness of the bottom layer is 0.8-2 mm.

Preferably, the core layer, the surface layer and the bottom layer are all wooden boards.

The invention also aims to provide a production method of the impact-resistant splice plate, which comprises the following steps:

s1, cutting: cutting corner timbers generated by processing plates to manufacture splicing blocks with the same width and the same thickness, and then performing rough sanding on the surfaces of the splicing blocks by using a 60-80-mesh abrasive belt;

s2, tooth punching: open teeth or hidden teeth are arranged along the width direction of the splicing blocks;

s3, strip connection: gluing the exposed teeth/hidden teeth of the splicing blocks, and then finger-jointing the splicing blocks through the exposed teeth/hidden teeth to obtain a plurality of strip-shaped splicing units with the same size and different finger-jointing positions;

s4, tenoning: two sides of the splicing unit are respectively provided with a tenon and a mortise in a penetrating way along the length direction;

s5, splicing: gluing the tenon and the mortise, joggling the splicing units through the matching of the tenon and the mortise to prepare a core layer, finely sanding the surface of the core layer by using a 100-200-mesh abrasive belt, and extruding a plurality of sunken penetration parts on the upper surface and the lower surface of the core layer by using a licker-in;

s6, laminating: coating TPU on the surface of the core layer, then placing glass fiber mesh cloth or carbon fiber mesh cloth coated with TPU in advance on the upper surface and the lower surface of the core layer, rolling and flattening, then covering the surface layer and the bottom layer, and pressing to obtain the impact-resistant splice plate.

The invention has the following beneficial effects:

1. the splice plate comprises a core layer, a surface layer and a bottom layer, wherein the surface layer and the bottom layer are arranged on two sides of the core layer, the core layer is a finger joint plate and is formed by joggling a plurality of splice units, and the splice units are formed by finger jointing a plurality of splice blocks. The finger joint positions on the adjacent splicing units are staggered, so that the external force action parts are dispersed, and the impact damage of external force is reduced preliminarily; on this basis, through with adjacent concatenation unit along pointing the direction vertically joggle of joint for tenon and tongue-and-groove complex joggle structure passes all on the concatenation unit and indicates the joint position, plays the enhancement supporting role to pointing the joint position, effectively improves and indicates the joint position to the resistance of vertical impact force, and then effectively reduces the impact force that shifts to sandwich layer and bottom, reduces the possibility that the layering phenomenon produced. In conclusion, the impact resistance level and the structural stability of the splice plate are improved by staggering the finger joint positions of the adjacent splice units, arranging the joggle structure penetrating through the finger joint positions and combining the protective effect of the surface layer and the bottom layer on the core layer.

2. Set up balanced layer respectively between sandwich layer and top layer, between sandwich layer and the bottom, balanced layer is the glass fiber screen cloth or the carbon fiber screen cloth of coating thermoplastic elastomer material, and the setting on balanced layer not only can improve splice plate bulk strength, can reduce the external force that passes to the sandwich layer moreover, further improves splice plate's impact-resistant level and structural stability. The grid structure design of the fiber mesh cloth enables the thermoplastic elastomer material to quickly permeate and be uniformly distributed on the fiber mesh cloth, the effect of 'hardness and softness' is enhanced, the combination difficulty of the fiber mesh cloth and other plate layers is reduced, and the bonding speed, bonding strength and bonding comprehensiveness of the balance layer, the core layer, the surface layer and the bottom layer are improved.

3. Thermoplastic elastomer material (preferably TPU) has good waterproof property, viscidity and elasticity, coats behind the sandwich layer surface, can fill the space that indicates to connect the position, can avoid moisture to get into the sandwich layer inside by indicating to connect the gap, is showing the waterproof ability who improves the splice plate, avoids the splice plate because of intaking or the distortion or layering even that wets, makes the splice plate can be applicable to high humid environment.

4. The upper surface and the lower surface of the core layer are provided with a plurality of sunken penetration parts, so that the bonding strength of the balance layer and the core layer is improved. The thermoplastic elastomer material can enter the penetration part during coating, and has certain volume expansion after being cured, so that the thermoplastic elastomer material achieves an embedding effect in the penetration part, the bonding strength of the balance layer and the core layer is greatly improved, and the possibility of layering is further reduced.

5. The splice plate main body (namely the core layer) is made of the corner wood, so that the recycling of wastes is realized, the cost is low, and the economic benefit is remarkable.

Drawings

FIG. 1: schematic structural diagram of the impact-resistant splice plate described in example 1.

FIG. 2: the structure of the core layer described in example 2 is schematically illustrated.

FIG. 3: the structure of the core layer described in example 3 is schematically shown.

FIG. 4: the structure of the core layer described in example 4 is schematically shown.

FIG. 5: the structure of the core layer described in example 5 is schematically shown.

In the figure: 1-core layer, 2-surface layer, 3-bottom layer, 4-balance layer; 11-splicing unit, 12-tenon, 13-mortise and 14-penetrating part; 111-splicing block, 112-hidden tooth, 113-bright tooth.

Detailed Description

The invention is further described below with reference to the accompanying drawings and specific embodiments.

Example 1

An impact-resistant splice plate comprises a core layer 1, a surface layer 2 arranged above the core layer 1 and a bottom layer 3 arranged below the core layer 1, wherein the core layer 1, the surface layer 2 and the bottom layer 3 are all wooden plates, the thickness of the core layer 1 is 1.2-1.8 cm, the thickness of the surface layer 2 is 1.2-8 mm, and the thickness of the bottom layer 3 is 0.8-2 mm; balance layers 4 are respectively arranged between the core layer 1 and the surface layer 2 and between the core layer 1 and the bottom layer 3, and the balance layers 4 are glass fiber mesh cloth or carbon fiber mesh cloth coated with thermoplastic elastomer materials. The core layer 1 is formed by joggling a plurality of splicing units 11, each splicing unit 11 is formed by continuously finger-jointing a plurality of splicing blocks 111 with the same width and the same thickness through sawtooth-shaped hidden teeth 112, and finger-jointing positions on adjacent splicing units 11 are distributed in a staggered manner; the joggling direction of the splicing units 11 is vertical or substantially vertical to the finger joint direction, and the joggling of the adjacent splicing units 11 is realized through the matching of the tenons 12 and the mortises 13 which are arranged in the length direction of the splicing units, so that a joggling structure consisting of the tenons 12 and the mortises 13 penetrates through all finger joint positions on the splicing units, and the finger joint positions are reinforced and supported; the upper and lower surfaces of the core layer 1 are provided with recessed penetrations 14 in which the coating thermoplastic elastomer material is embedded.

More specifically, in the implementation, the core layer 1 is a 1.5cm finger joint board, the raw materials are leftover materials produced by processing solid wood floors, the types of the leftover materials are various, the surface layer 2 is black walnut with the thickness of 5mm, the bottom layer 3 is black walnut with the thickness of 2.0mm, and the balance layer 4 is glass fiber mesh cloth coated with TPU and with the aperture of 1.0mm, and the thickness of the glass fiber mesh cloth is 2.0 mm; the penetration parts 14 are uniformly distributed on the upper and lower surfaces of the core layer 1, and the single penetration part 14 is a rectangular depressed area with the depth of 0.8 mm.

Example 2

An impact-resistant splice plate, the basic construction of which is the same as that of example 1, except that: the upper and lower surfaces of the core layer 1 are not provided with the penetration portions 14 (shown in fig. 2).

Example 3

An impact-resistant splice plate, the basic construction of which is the same as that of example 2, except that: the adjacent splice blocks 111 on the splicing unit 11 are finger-jointed by the exposed teeth 113, and the exposed teeth 113 are also zigzag (as shown in fig. 3).

Example 4

An impact-resistant splice plate, the basic construction of which is the same as that of example 2, except that: on the same splicing unit 11, the hidden teeth 112 and the exposed teeth 113 are alternately arranged (as shown in fig. 4), and this alternate arrangement mode can disperse the external force to more directions, further reduce the damage, and has better effect on improving the impact resistance and the structural stability of the core layer 1, compared with the arrangement of a single hidden tooth 112 or exposed tooth 113.

Example 5

An impact-resistant splice plate, the basic construction of which is the same as that of example 2, except that: the shape of the hidden teeth 112 is square (as shown in fig. 5), which is convenient for secondary processing, and when processing errors occur, the square hidden teeth 112 can be processed into saw-toothed shapes for continuous utilization, thereby reducing waste.

Example 6

An impact-resistant splice plate, the basic construction of which is the same as that of example 1, except that: without the reinforcing layer 4.

Example 7

The embodiment provides a method for producing an impact-resistant splice plate according to embodiment 1, which specifically comprises the following steps:

s1, cutting: cutting corner timbers generated by processing plates to manufacture splicing blocks 111 with the same width, the same thickness and various lengths, and then performing rough sanding on the surfaces of the splicing blocks 111 by using a 60-80-mesh abrasive belt;

s2, tooth punching: the width direction of the splicing block 111 is provided with a hidden tooth 112;

s3, strip connection: gluing the hidden teeth 112 of the splicing blocks 111, and then finger-jointing the splicing blocks 111 through the hidden teeth 112 to obtain a plurality of strip-shaped splicing units 11 with the same size and different finger-jointing positions;

s4, tenoning: two sides of the splicing unit 11 are respectively provided with a tenon 12 and a mortise 13 in a penetrating way along the length direction;

s5, splicing: gluing the tenon 12 and the mortise 13, joggling the splicing units 11 through the matching of the tenon 12 and the mortise 13 to prepare a core layer 1, finely sanding the surface of the core layer 1 by using a 100-200-mesh abrasive belt, and pressing out a sunken penetration part 14 on the upper surface and the lower surface of the core layer 1 through a licker-in;

s6, laminating: coating TPU on the upper surface and the lower surface of the core layer 1, then placing glass fiber mesh cloth or carbon fiber mesh cloth coated with TPU in advance on the upper surface and the lower surface of the core layer 1, rolling and flattening, then covering the surface layer 2 and the bottom layer 3, and pressing to obtain the impact-resistant splice plate.

The impact-resistant splice plates of examples 1-6 were tested for performance, and the test items and results are shown in the following table:

in conclusion, the splice plate has the advantages of strong impact resistance, good waterproofness, high bonding strength, good structural stability and long service life.

This detailed description is to be construed as illustrative only and is not to be taken as limiting the invention, as any changes that may be made by a person skilled in the art after reading the present specification will be protected by the patent laws within the scope of the appended claims.

Claims

1. The utility model provides an impact-resistant splice plate, includes sandwich layer (1), locates top layer (2) of sandwich layer (1) top and locate bottom (3) of sandwich layer (1) below, its characterized in that: the core layer (1) is formed by joggling a plurality of splicing units (11), the splicing units (11) are formed by single finger joint or continuous finger joint of a plurality of splicing blocks (111) with the same width and the same thickness, and finger joint positions on adjacent splicing units (11) are distributed in a staggered manner; the joggling direction of the splicing units (11) is vertical or substantially vertical to the finger joint direction, and the joggling of the adjacent splicing units (11) is realized through the matching of tenons (12) and mortises (13) which are arranged in a penetrating mode along the length direction of the splicing units.

2. The impact-resistant splice plate of claim 1, wherein: balance layers (4) are respectively arranged between the core layer (1) and the surface layer (2) and between the core layer (1) and the bottom layer (3); the balance layer (4) is glass fiber mesh cloth or carbon fiber mesh cloth coated with thermoplastic elastomer materials.

3. The impact-resistant splice plate of claim 2 wherein: the thermoplastic elastomer material is TPU.

4. The impact-resistant splice plate of claim 2, wherein: the aperture of the glass fiber mesh cloth or the carbon fiber mesh cloth is 0.5-3 mm.

5. The impact-resistant splice plate of claim 1, wherein: the upper surface and the lower surface of the core layer (1) are provided with a plurality of sunken penetration parts (14).

6. The impact-resistant splice plate of claim 1, wherein: the adjacent splicing blocks (111) are finger-jointed through the open teeth (113) or the hidden teeth (112).

7. The impact-resistant splice plate of claim 6 wherein: the shape of the light teeth (113) or the dark teeth (112) is square or sawtooth.

8. The impact-resistant splice plate of claim 1, wherein: the thickness of the core layer (1) is 1.2-1.8 cm, the thickness of the surface layer (2) is 1.2-8 mm, and the thickness of the bottom layer (3) is 0.8-2 mm.

9. The impact-resistant splice plate of claim 1, wherein: the core layer (1), the surface layer (2) and the bottom layer (3) are all wooden boards.

10. The production method of the impact-resistant splice plate is characterized by comprising the following steps of: the method comprises the following steps: