CN215920767U - Grid type solid wood composite board core material made of wood core after veneer rotary cutting - Google Patents

Abstract

The utility model provides a grid type solid wood composite board core material made of a wood core obtained after veneer rotary cutting, which comprises two layers of grid type core materials made of the wood core obtained after veneer rotary cutting, wherein each layer of grid type core material comprises a plurality of semicircular corner cut wood core strips, each semicircular corner cut wood core strip comprises a vertical corner cut surface, a lower plane and an upper arc surface which are arranged at two sides, and a plurality of spaced grooves vertical to fibers of the semicircular corner cut wood core strips are formed in the upper arc surface of each semicircular corner cut wood core strip; the vertical corner cutting surfaces of the semicircular corner cutting wood core strips are abutted and spliced into a transverse wood fiber substrate, longitudinal communication grooves are formed in the transverse wood fiber substrate by the grooves, panels of longitudinal wood fibers are embedded in the communication grooves to form a layer of grid core material, and the upper surfaces of two layers of grid core materials are oppositely laminated to form a grid solid wood composite board core material. The utility model greatly improves the outturn percentage of the wood core, the volume loss of the wood core is very small, and meanwhile, the utility model has the effects of sound insulation, heat insulation and ventilation, and the stability of the plate body reaches the best effect.

Description

Grid type solid wood composite board core material made of wood core after veneer rotary cutting

Technical Field

The utility model relates to a grid type solid wood composite board core material manufactured by a wood core after veneer rotary cutting, belonging to the fields of architectural decoration, furniture boards, wood doors and the like.

Background

Eucalyptus is one of the mainstream wood species of fast growing woods in China, and for the Guangxi Zhuang autonomous region, eucalyptus planting is used as an important item with the annual value of billions of yuan, and the Guangxi artificial forest is listed in the first three areas in China. Greatly relieving the demand of China on wood.

Because eucalyptus can be grown only in four to five years, the growing speed is slow after the fifth year of planting, the eucalyptus is far less than that of the second year after felling, and the diameter can be as long as 8 to 12cm within 5 years generally according to the soil quality and the environment of different plots.

The small-diameter round wood is not suitable for being sawn into square materials and is only suitable for being rotationally cut into very thin veneers for producing plywood. Eucalyptus wood, as a fast growing wood, has become one of the main materials of plywood veneers.

Therefore, Guangxi becomes the largest production base of plywood veneers in China. The data show that nearly ten million wood cores after rotary cutting of single plates can be produced in Guangxi province every day, and how to fully utilize the wood cores is the foundation of resource saving and cost reduction.

The diameter of the round rod core material after the veneer is cut in a rotary manner, called wood core for short, is 2.2-2.8 cm. At present, all factories plane wood cores into square materials and then combine the square materials into boards or battens, round wood cores are planed into square materials, one third of the volume of the square materials is necessarily needed to be wood shavings, and the waste is extremely large and even the waste is unfortunately.

In addition, the existing solid wood composite board is not only a multilayer plywood, but also a three-layer, five-layer and other even-number vertically and horizontally laminated solid wood composite board, and each layer of wood fiber of the existing solid wood composite board is in the same direction. If the plate is cut into a small area, the defect of short wood fiber is not obvious, and if the plate is cut into a larger area for use, the bending strength and the internal stress of the plate are changed unsatisfactorily and are easy to deform. The requirements on the flatness and the like of the plates are high due to the door plate and the furniture cabinet door.

Disclosure of Invention

The utility model aims to provide a grid type solid wood composite board core material manufactured by a wood core after veneer rotary cutting, which not only solves the problems of fully utilizing the wood core, saving resources and reducing cost, but also solves the problems of unsatisfactory changes of bending strength and plate body internal stress, easy deformation and the like of the existing solid wood composite board.

The technical scheme of the utility model is as follows: the utility model relates to a latticed solid wood composite board core material made of a wood core subjected to rotary cutting of a single board, which comprises two layers of latticed core materials made of the wood core subjected to rotary cutting of the single board, wherein each layer of latticed core material comprises a plurality of semicircular corner cut wood core strips, each semicircular corner cut wood core strip comprises a vertical corner cut surface, a lower plane and an upper arc surface at two sides, and the upper arc surface of each semicircular corner cut wood core strip is provided with a plurality of middle grooves and grooves at two ends, which are spaced and vertical to fibers of the semicircular corner cut wood core strip; the vertical corner cutting surfaces of the semicircular corner cutting wood core strips are spliced adjacently to form a transverse wood fiber base plate, a longitudinal middle communicating groove is formed in the middle groove on the transverse wood fiber base plate, longitudinal two-end communicating grooves are formed in the two-end communicating groove on the transverse wood fiber base plate, longitudinal wood fiber embedded plates matched with the grooves are embedded in the middle communicating groove and the two-end communicating grooves to form a layer of grid core material, the upper surfaces of the two layers of grid core materials are overlapped relatively to form a grid solid wood composite plate core material.

The semicircular corner cut wood core strip is obtained by cutting a wood core subjected to rotary cutting of a single plate from the middle part by two along the axis of the wood core, and the two sides of the semicircular corner cut wood core strip are corner cut surfaces vertical to the lower plane.

The widths of a plurality of middle grooves of the semicircular corner cutting wood core strip are the same, and the widths of the grooves at two ends are 1.5-2 times of the width of the middle groove.

The width L2 of the middle groove of opening on the semicircle corner cut wood core strip be 20 ~ 40mm, the length L3 of the last arc surface between the adjacent groove be 75 ~ 100mm, the thickness h of recess bottom to lower plane be 3 ~ 6 mm.

The length of the semicircular corner cut wood core strip and the width H of each layer of the grid-shaped core material are determined by the width of the grid-shaped solid wood composite board core material, H is the width of the composite board plus the machining allowance, and the total length L of each layer of the grid-shaped core material is determined by the length of the grid-shaped solid wood composite board.

When the two layers of grid-type core materials are oppositely laminated, the longitudinal wood fiber panels of the upper layer and the lower layer correspond to each other.

The utility model has the advantages that:

1. greatly improves the outturn percentage of the wood core, and effectively utilizes the whole volume of the wood core except serious defects and sawdust.

2. The gaps between the semi-circles in the plate body have the effects of sound insulation, heat insulation and ventilation, the wood fibers of the plate body have loose telescopic space, the wood fibers cannot deform even being wetted occasionally or meeting water, and the stability of the plate body achieves the best effect.

3. The core material of the solid wood composite board with higher density is not ideal for manufacturing the wooden door, and the hinge can not bear the weight. The gaps among the semi-circles of the wood core just play a role in reducing weight, and the hinge can completely bear the weight. According to the utility model, the two ends of the transverse wood fiber substrate are respectively provided with the communicating groove 2D1, when the door plate is manufactured, the width of the communicating groove at the two ends is 1.5-2 times of that of the communicating groove in the middle, and the door lock is convenient to install.

4. The utility model has large thickness plasticity, and when manufacturing a wooden door or other thicker products, a layer of thin plate can be added between two layers of grid type core materials to adjust the required thickness, but still maintain the design effect.

5. The eucalyptus wood has the best nail holding capacity, a layer of light board with low density can be clamped between the two layers of grid type core materials to increase the thickness, so that the self weight is reduced, and the nail holding capacity of the wooden door frame is ensured.

6. When the wood core is used for manufacturing products, the material is saved by 25-35% under the same condition.

7. The utility model has high cost performance, keeps various natural attributes of the log, and injects various creative improvements from the aspects of internal structure, production process, wood utilization rate improvement and the like, thereby being a product which can be benefited by manufacturers, merchants and consumers undoubtedly.

Drawings

Fig. 1 is a schematic view of a wood core after veneer lathe cutting.

Fig. 2 is a schematic view of the wood core after being planed into a flat round shape.

Fig. 3 is a schematic view of a wood core row 1.1 made up of a plurality of oblate wood cores.

Fig. 4 is a schematic view of two transverse wood fiber base boards 2 obtained by cutting the wood core row from the middle part along the axis of the wood core.

Fig. 5 is a schematic view of a single semi-circular corner cut wood core strip 2.1.

Fig. 6 is a schematic view of a transverse wood fiber substrate unit 2.2 formed by splicing a plurality of semicircular corner cut wood core strips 2.1 in the same direction.

Fig. 7 is a schematic view of a transverse wood fiber substrate unit 3 formed by a plurality of transverse wood fiber substrate units 2.2 spliced in the same direction.

Fig. 8 is a schematic view of a layer of cellular core 5 formed by panels 4 of longitudinal wood fibers embedded in transverse wood fiber base boards 3.

Fig. 9 is a schematic view of the latticed solid wood composite board core material 6 formed by oppositely laminating the upper surfaces of two layers of latticed core materials 5.

Fig. 10 is a sectional view taken along line a-a of fig. 8.

Fig. 11 is a schematic view of a panel of longitudinal wood fibres.

Fig. 12 is a schematic view of the adjustment layer sheet 7 added between two layers of the mesh core 5.

Detailed Description

Embodiments of the utility model are further described below with reference to the accompanying drawings:

fig. 1 is a schematic view of a wood core after veneer rotary cutting, and the general diameter is in the range of 24-28 mm, because the plywood has two general specifications: one is plywood for furniture, 2440 x 1220mm, so the core length H is 1270mm (leaving a machining allowance); one is a board used for making building templates, 1830X 915mm, so the wood core length H is 970mm (the processing allowance is reserved).

As shown in fig. 5, 7, 8, 9, and 10: the utility model relates to a grid type solid wood composite board core material made of a wood core after veneer rotary cutting, which comprises two layers of grid type core materials, wherein each layer of grid type core material is made of the wood core after veneer rotary cutting, each layer of grid type core material comprises a plurality of semicircular corner cut wood core strips 2.1, the semicircular corner cut wood core strips 2.1 are made of the wood core from the middle part of the wood core along the axis, and comprise a lower plane 2c, corner cut surfaces 2a and an upper arc surface 2b, which are perpendicular to the lower plane 2c, at two sides, and the upper arc surface 2b of each semicircular corner cut wood core strip 2.1 is provided with a plurality of middle grooves 2d and grooves 2d1 at two ends, which are spaced and perpendicular to the fibers of the semicircular corner cut wood core strips; the vertical corner cutting surfaces 2a of the semicircular corner cutting wood core strips 2.1 are spliced adjacently to form a transverse wood fiber substrate 3, the middle grooves 2D form longitudinal middle communicating grooves 2D on the transverse wood fiber substrate 3, the two end grooves 2D1 form longitudinal two end communicating grooves 2D1 on the transverse wood fiber substrate 3, panels 4 of longitudinal wood fibers matched with the grooves are embedded in the middle communicating grooves 2D and the two end communicating grooves 2D1 to form a layer of grid core material 5, the upper surfaces of the two layers of grid core materials 5 are overlapped relatively to form a grid solid wood composite board 6.

Preferably, the widths of the middle grooves 2d of the semicircular corner cutting wood core strip 2.1 are the same, and the widths of the grooves 2d1 at the two ends are 1.5-2 times of the width of the middle groove.

Preferably, the width L2 of the middle groove 2d formed on the semicircular angle cutting wood core bar 2.1 is 20-40 mm, the length L3 of the upper arc surface 2b between the adjacent grooves is 75-100 mm, and the thickness h from the bottom of the groove to the lower plane 2c is 3-6 mm.

Preferably, an adjusting layer is added between the two layers of grid core materials 5, the adjusting layer is a thin plate 7, the thickness of the thin plate 7 is determined according to the requirement of the grid solid wood composite board core material, and the thin plate 7 and the two layers of grid core materials 5 are laminated and bonded together to obtain the grid solid wood composite core material 6.

Preferably, the length of the semicircular chamfer wood core bar 2.1 and the width H of each layer of the grid-shaped core material 5 are determined by the width of the grid-shaped solid wood composite board core material, H is the width of the composite board plus the machining allowance, and the total length L of each layer of the grid-shaped core material 5 is determined by the length of the grid-shaped solid wood composite board.

When the two layers of grid core materials 5 are oppositely laminated, the longitudinal wood fiber panels 4 of the upper layer and the lower layer correspond to each other.

The manufacturing method of the utility model comprises the following steps:

1) planing two sides of the wood core subjected to rotary cutting of the veneer symmetrically to form an oblate wood core 1 with chord planes 1a at two sides and an upper arc surface 2b, wherein the length H of the oblate wood core 1 is matched with the width of the grid type solid wood composite board, the chord planes 1a at two sides of the oblate wood core 1 are parallel, and the chord length S is 6-12 mm, as shown in figure 2;

2) splicing the chord planes 1a of the oblate wood cores 1 into a required length L1 to form a wood core row 1.1, as shown in FIG. 3;

3) cutting a wood core row 1.1 along the axis of the wood core perpendicular to chord planes at two sides from the middle to obtain two transverse wood fiber substrate units 2, wherein one surface of each transverse wood fiber substrate unit 2 is an upper arc wave-shaped surface 2b1 formed by an upper arc surface 2b, the other surface is a lower plane 2c, and the two sides are perpendicular planes 2a, as shown in fig. 4;

4) then, a plurality of groove cutters with required width are installed on the multi-blade saw, a plurality of longitudinal middle communicating grooves 2D and two end communicating grooves 2D1 are cut on the upper arc wave-shaped surface 2b1 of the transverse wood fiber substrate unit 2, and the transverse wood fiber substrate unit 2.2 with the communicating grooves is obtained as shown in fig. 6, wherein the width L2 of the middle communicating grooves 2D is 20-40 mm, and the width of the two end grooves 2D1 is 1.5-2 times of the width of the middle grooves. The length L3 of the upper arc surface 2b between the adjacent communicating grooves is 75-100 mm, and the thickness h from the bottom of the communicating groove to the lower plane 2c is 3-6 mm;

5) then a plurality of transverse wood fiber substrate units 2.2 with communicated grooves are spliced into a transverse wood fiber substrate 3 with the required length L in the same direction, as shown in figure 7;

6) arranging longitudinal wood fiber panels 4 according to the width, depth and length of the communication grooves, as shown in figure 11, and pressing the longitudinal wood fiber panels 4 in the communication grooves of the transverse wood fiber base plates 3 by adopting environment-friendly glue to form a layer of grid type core materials 5, as shown in figure 8; the width of the longitudinal wood fiber panel 4 is matched with that of the communication groove, and the panel can be lightly tapped, so that a large gap cannot be formed, and tight matching cannot be realized, otherwise, the internal stress of the plate body is affected;

7) taking the panel 4 of the longitudinal wood fiber as a reference, after sanding and flattening the arc wave-shaped surface of the grid core material 5, oppositely laminating, bonding the surfaces of the two layers of grid core materials 5 with the panel 4 to obtain a grid solid wood composite board core material 6, as shown in figure 9;

preferably, the width L1 of the spliced wood core row 1.1 in the step 2) is 100mm ± 10mm, so as to facilitate the first cutting and the second cutting from the middle.

Preferably, the width L2 of the intermediate communication groove 2D in step 4) is 20 to 40mm, the length L3 of the upper arc wave-shaped surface 2b1 between adjacent communication grooves is 75 to 100mm, and the thickness h from the bottom of the communication groove to the lower plane 2c is 3 to 6 mm.

Preferably, the width L2a of the communication groove 2D1 opened at both ends of the upper part of the transverse wood fiber base plate 3 in the step 4) is 1.5 to 2 times of the width L2 of the middle communication groove 2D, so as to install the door lock.

Preferably, an adjusting layer is added between the two layers of grid core materials 5 in the step 7), the adjusting layer is a thin plate 7, the thickness of the thin plate 7 is determined according to the thickness requirement of the grid solid wood composite board core material, the thin plate 7 and the two layers of grid core materials 5 are laminated and bonded together, and a grid solid wood composite core material 6 is obtained, as shown in fig. 12.

The utility model has large thickness plasticity, and when manufacturing a wooden door or other thicker products, a layer of thin plate 7 can be added between two layers of grid type core materials to adjust the required thickness, but still maintain the design effect. The nail holding capacity of the eucalyptus is optimal, a layer of light thin plate 7 with low density can be clamped between two layers of grid type core materials, the thickness is increased, the dead weight is reduced, and the nail holding capacity of the wooden door frame is ensured.

Fig. 10 is a sectional view along line a-a of fig. 9: after two-layer grid core 5 is folded relatively and is pressed the bonding, have space 5a between the semi-circle in the plate body, have syllable-dividing thermal-insulated and ventilative efficiency, the wood fiber of plate body has had loose flexible space, even wet or meet water occasionally and can not warp yet, simultaneously, the space between the semi-circle just in time plays and subtracts the weight effect.

The core of the utility model is a grid type solid wood composite board core material manufactured by using a wood core after veneer rotary cutting, in particular to a grid type solid wood composite board core material manufactured by cutting the wood core into a plurality of semicircular angle-cut wood core strips from the middle part, splicing the plurality of semicircular angle-cut wood core strips into a transverse wood fiber base plate, cutting a longitudinal communication groove on the transverse wood fiber base plate, embedding a longitudinal wood fiber embedding plate in the communication groove to manufacture the grid type core material, and oppositely laminating and bonding the two layers of grid type core materials to obtain the grid type solid wood composite board core material. Therefore, all that the wood core is cut into a plurality of semicircular corner cut wood core strips from the middle part, the semicircular corner cut wood core strips are spliced into the transverse wood fiber base plate, the longitudinal communication groove is cut in the transverse wood fiber base plate, and the panel of the longitudinal wood fiber is embedded in the communication groove to form the grid type core material belongs to the protection scope of the utility model.

Claims (6)

1. The utility model provides a latticed wood composite board core by the core preparation behind the rotary-cut veneer, includes two-layer latticed core, its characterized in that: each layer of the net-shaped core material is made of a wood core after a veneer is cut in a rotary mode, each layer of the net-shaped core material comprises a plurality of semicircular corner cut wood core strips (2.1), each semicircular corner cut wood core strip (2.1) is made of the wood core by cutting the wood core from the middle along the axis, and comprises a lower plane (2c), corner cut surfaces (2a) and an upper arc surface (2b), wherein the two sides of the corner cut wood core surfaces are perpendicular to the lower plane (2c), and the upper arc surface (2b) of each semicircular corner cut wood core strip (2.1) is provided with a plurality of spaced middle grooves (2d) and two end grooves (2d1), and the middle grooves are perpendicular to fibers of the semicircular corner cut wood core strips; the perpendicular corner cut face (2a) of many semicircle corner cut wood core strips (2.1) is adjacent to splice, constitute horizontal wood fiber base plate (3), middle recess (2D) forms fore-and-aft middle intercommunication recess (2D) on horizontal wood fiber base plate (3), both ends recess (2D1) forms fore-and-aft both ends intercommunication recess (2D1) on horizontal wood fiber base plate (3), panel (4) of the vertical wood fiber that has matted with the recess are inlayed in middle intercommunication recess (2D) and both ends intercommunication recess (2D1), constitute one deck grid core material (5), the upper surface of two-layer grid core material (5) is folded relatively and is pressed, constitute grid wood composite board core material (6).

2. The core material of the cellular solid wood composite board manufactured by the rotary-cut wood core of the veneer according to claim 1, wherein: the widths of a plurality of middle grooves (2d) of the semicircular corner cutting wood core strip (2.1) are the same, and the widths of the grooves (2d1) at two ends are 1.5-2 times of the width of the middle groove.

3. The core material of the cellular solid wood composite board manufactured by the rotary-cut wood core of the veneer according to claim 1 or 2, wherein: the semicircular corner cutting wood core strip (2.1) is provided with a middle groove (2d) with a width L2 of 20-40 mm, the length L3 of an upper arc surface (2b) between adjacent grooves is 75-100 mm, and the thickness h from the bottom of the groove to a lower plane (2c) is 3-6 mm.

4. The core material of the cellular solid wood composite board manufactured by the rotary-cut wood core of the veneer according to claim 1 or 2, wherein: the method is characterized in that an adjusting layer is additionally arranged between the two layers of grid core materials (5), the adjusting layer is a thin plate (7), the thickness of the thin plate (7) is determined according to the requirement of the grid solid wood composite board core material, and the thin plate (7) and the two layers of grid core materials (5) are laminated and bonded together to obtain the grid solid wood composite board core material (6).

5. The core material of the cellular solid wood composite board manufactured by the rotary-cut wood core of the veneer according to claim 1 or 2, wherein: the length of the semicircular corner cut wood core strip (2.1) and the width H of each layer of the grid-shaped core material (5) are determined by the width of the grid-shaped solid wood composite board core material, H is the width of the composite board plus the machining allowance, and the total length L of each layer of the grid-shaped core material (5) is determined by the length of the grid-shaped solid wood composite board.

6. The core material of the cellular solid wood composite board manufactured by the rotary-cut wood core of the veneer according to claim 1 or 2, wherein: when the two layers of grid core materials (5) are oppositely laminated, the longitudinal wood fiber panels (4) of the upper layer and the lower layer correspond to each other.

Images