CN108818800B

CN108818800B - Method for processing plate by using unfolded bamboo wood as raw material

Info

Publication number: CN108818800B
Application number: CN201810742509.1A
Authority: CN
Inventors: 王志勇; 何柏胜
Original assignee: Yongxin Fuxin Wood Industry Co ltd
Current assignee: Yongxin Fuxin Wood Industry Co ltd
Priority date: 2018-07-09
Filing date: 2018-07-09
Publication date: 2020-12-08
Anticipated expiration: 2038-07-09
Also published as: CN108818800A

Abstract

The invention provides a method for processing a plate by taking unfolded bamboo wood as a raw material, and belongs to the technical field of bamboo wood processing. The method comprises the steps of taking a bamboo tube with bamboo knots reserved as a base material, removing the bamboo knots for later use after unfolding, forming positioning bulges and positioning grooves on one side of the tabasheer of a board with the bamboo knots removed, and forming the board with a two-layer structure in a superposition and splicing mode, wherein the bamboo knots are unfolded to form reinforcing strips which are embedded in the structures of the two side plates and used for reinforcing the transverse strength and the longitudinal strength of the board. The bamboo board has the advantages of improving the flatness of the bamboo board, improving the utilization rate of bamboo, enhancing the strength of the board, prolonging the service life of the board, optimizing the appearance of the board and the like.

Description

Method for processing plate by using unfolded bamboo wood as raw material

Technical Field

The invention belongs to the technical field of bamboo processing, and relates to a method for processing a plate by taking unfolded bamboo as a raw material.

Background

Cutting off the bamboo tube, removing inner and outer sections, green and yellow, slotting, softening at high temperature, spreading in a spreading mold, flattening to obtain a whole bamboo spread bamboo plate with width substantially equal to the circumference of the bamboo tube and no visible cracks on the spread surface. Compared with the bamboo board spliced by the traditional bamboo splints, the quality of the unfolded bamboo board is obviously improved. The finished product can be directly provided for users to use, and can also be used as a novel material to be deeply processed into other various artificial board products.

However, the bamboo-unfolded board has many technical problems, so that the reaction of the bamboo board in the market is relatively weak, wherein the bamboo joint part of the unfolded bamboo is included, because the fiber density is high, the fiber distribution is irregular and dense, the board is easy to deform at the bamboo joint position, specifically, the two sides of the bamboo joint expand, the bamboo joint part becomes small, and the other parts except the bamboo joint have relatively low fiber density, relatively uniform fiber density and relatively uniform deformation, so that the bamboo joint position deforms and protrudes, thereby affecting the overall beauty, stability and use effect of the bamboo board.

The fiber density of the green bamboo one side of the bamboo is greater than that of the yellow bamboo one side, and the fiber density gradually increases from the yellow bamboo one side to the green bamboo one side, the bamboo joint part shows that the density is large, the bamboo fiber is the protruding state of V type to outside both sides respectively, the unevenness is easily caused at the bamboo joint part in the bamboo wood processing process, the fiber that makes yellow bamboo board one side need wholly remove is more, influences the utilization ratio of bamboo timber.

Bamboo boards made of unfolded bamboo materials also have the defect of strength, the bamboo fibers are longitudinally distributed, so that the transverse bending strength of the bamboo boards is low, and even the bamboo boards are spliced, the problem also exists, and the application range and the application occasions of the boards are influenced.

Disclosure of Invention

The invention aims to provide a method for processing a plate by taking unfolded bamboo wood as a raw material, aiming at the problems in the prior art, and the technical problem to be solved by the invention is how to improve the utilization rate of the bamboo wood and improve the flatness, the attractiveness and the durability of the plate.

The purpose of the invention can be realized by the following technical scheme: a method for processing a plate by taking unfolded bamboo wood as a raw material is characterized by comprising the following steps:

A. cutting a bamboo tube with two bamboo knots as a base material, classifying the base materials with the diameter difference within 5mm, and respectively performing the following processing procedures on each group of classified base materials;

B. longitudinally forming strip-shaped gaps on the base materials, and placing the base materials with the gaps in a softening kettle for stewing and softening;

C. spreading the softened base material in a spreading machine, and opening avoiding grooves parallel to bamboo fibers on the surface of the bamboo on one side of the tabasheer while spreading, wherein the avoiding grooves are uniformly distributed at equal intervals;

D. transversely cutting the bamboo knot part, forming strip-shaped reinforcing strips on the bamboo knot part, and forming a rectangular splice plate by using the base materials between adjacent bamboo knots;

E. cutting each splice plate to enable each splice plate to be processed into rectangular plates with equal thickness and equal side length; processing the avoiding groove to enable one side of the tabasheer to be processed into a structure with zigzag positioning bulges and positioning grooves matched with the positioning bulges at intervals;

F. two embedded grooves are formed in the splicing plate and are perpendicular to the positioning protrusions;

G. compacting all the splice plates through a roller press;

H. splicing the splice plates into double-layer plates, wherein the tabasheer sides of the splice plates are opposite, positioning bulges of the splice plate on the upper layer correspond to positioning grooves of the splice plate on the lower layer, reinforcing strips are embedded between the embedding grooves of the splice plate on the upper layer and the splice plate on the lower layer, and bonding glue is coated during splicing to form a semi-finished plate;

I. and cutting off the redundant upper layer splicing plates, lower layer splicing plates and reinforcing strips at the edges of the semi-finished product board according to the size requirement, and finishing the processing of the bamboo board after surface post-treatment.

In the method for processing the board by taking the unfolded bamboo wood as the raw material, the upper side surface and the lower side surface of the reinforcing strip are respectively provided with a notch, and the notches are opposite to the bottom surfaces of the splicing plates.

In the method for processing the board by taking the unfolded bamboo wood as the raw material, the length of the reinforcing strips is the same as the width of the splicing plates, and the reinforcing strips are embedded in the embedding grooves of the adjacent splicing plates at the same time.

In the method for processing the board by taking the unfolded bamboo wood as the raw material, the splice plates on the upper layer and the splice plates on the lower layer are distributed in a staggered manner.

Compared with the prior art, the invention has the following advantages:

1. the strength between the splice plate on the upper layer and the splice plate on the lower layer is higher through the positioning bulges and the positioning grooves arranged on one side of the tabasheer and the positioning grooves in the shape of the teeth; originally, be used for reducing stress, prevent dodging groove of bamboo timber expansion in-process fracture, it is protruding to be processed into constant head tank and location, not only can make the closely knit degree of panel after the concatenation improve, intensity increases, improves the utilization ratio of bamboo timber, but also can effectually prevent to misplace between the splice plate on upper strata and the splice plate of lower floor, makes the concatenation process simpler, and the degree of difficulty in the concatenation process reduces, and the precision improves, and the wholeness of panel is better.

2. As the surface and the bottom surface of the plate, bamboo knot parts are removed, so that the flatness, the attractiveness and the durability of the plate are improved, and in the process of treating the plate, because the bamboo knots are removed, the processing difficulty is also reduced, for example, in the process of surface treatment such as flattening and the like, the processing is easier and the flatness is higher, higher flatness, flatness and smoothness can be kept by cutting off smaller thickness, and the utilization rate of the plate is improved.

3. The bamboo knot has the characteristics that intensity is high, and simultaneously, because of its fiber density is high, also there is the shortcoming of easy bounce-back after expanding, through set up the implantation groove on the splice plate, the reinforcing bar that forms is made with the bamboo knot implants the splice plate on upper strata and the implantation inslot between the splice plate of lower floor, and simultaneously, the direction of reinforcing bar is perpendicular with the bellied direction in location on the splice plate, it is perpendicular with the fibre direction of bamboo timber, not only can improve the bulk strength of panel, make horizontal and fore-and-aft bending strength and tensile strength of panel all obtain very big promotion, and can also utilize the characteristic of reinforcing bar bounce-back, make the reinforcing bar have the effect of "reed", make supporting between the splice plate on upper strata and the splice plate of lower floor support to support intensity higher, closely knit degree is better, utilize the bamboo knot, make the utilization ratio of bamboo timber higher, avoid extravagant.

4. The crooked bounce-back of splice plate, the mode of piling up relatively between the splice plate through the splice plate on upper strata and the splice plate of lower floor is avoided, strengthens the direction of implanting of strip, makes the bounce-back of strengthening the strip go on the plane of panel, and utilizes the bounce-back of strengthening the strip, improves the whole concatenation intensity of panel, in this field, has outstanding technical contribution, and has qualitative leap on the roughness of panel, pleasing to the eye degree, has very big promotion in the utilization ratio to the bamboo timber simultaneously.

5. The upper and lower both sides of strengthening the strip set up the notch, can "enlarge" the bounce-back effect of strengthening the strip on the one hand, make it bounce-back more easily, and can improve the bulk strength who strengthens the strip, make the intensity of buckling of strengthening the strip higher.

6. The splice plate on dislocation concatenation upper strata and the splice plate of lower floor, the reinforcing bar is implanted in the dislocation, makes the wholeness of panel stronger, and the intensity of panel and the integrality of panel are better.

Drawings

FIG. 1 is a schematic structural view of a bamboo tube obtained by the method.

FIG. 2 is a schematic diagram of the splicing manner of the splice plates in the method.

FIG. 3 is a cross-sectional view of the splice bar in the present method.

FIG. 4 is a cross-sectional view taken along the direction perpendicular to the bamboo fibers after the panels are spliced in the method.

FIG. 5 is a cross-sectional view along the direction parallel to the bamboo fibers in the process of splicing the panels.

Fig. 6 is an enlarged view of a portion a in fig. 5.

In the figure, 1, base stock; 11. a notch; 2. a reinforcing strip; 3. splicing plates; 31. positioning the projection; 32. positioning a groove; 33. and (5) implanting into the groove.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Taking the phyllostachys pubescens as an example, taking the middle section of the bamboo, taking a base material with the diameter of 80 +/-5 mm as an implementation object, and carrying out the following steps:

1. as shown in fig. 1, a strip-shaped gap 11 is longitudinally formed in a base material, and each base material provided with the gap 11 is placed in a softening kettle for cooking and softening;

2. spreading the softened base material in a spreading machine, and opening avoiding grooves parallel to bamboo fibers on the surface of the bamboo on one side of the tabasheer while spreading, wherein the avoiding grooves are uniformly distributed at equal intervals, and the distribution interval is about 6 mm;

3. transversely cutting the bamboo knot part, wherein the bamboo knot part forms a strip-shaped reinforcing strip 2, and the base material between adjacent bamboo knots forms a rectangular splice plate 3;

4. as shown in fig. 3, 4, 5 and 6, each splice plate 3 is cut to make each splice plate 3 into rectangular plates with equal thickness and equal side length; processing the avoiding groove to enable one side of the tabasheer to be processed into a structure that the positioning protrusions 31 in the shape of saw teeth and the positioning grooves 32 matched with the positioning protrusions 31 are alternated, wherein the positioning protrusions 31 and the positioning grooves 32 are processed by adopting a cutting tool;

5. as shown in fig. 2 and fig. 6, two implantation grooves 33 are formed in the splice plate 3, the implantation grooves 33 are perpendicular to the positioning protrusions 31, the depth of the implantation grooves 33 is 1-3 mm, the width of the implantation grooves 33 is 15-30 mm, due to the existence of the positioning protrusions 31 and the positioning grooves 32, the depth of the two corresponding implantation grooves 33 after superposition is 6-10 mm, and due to the need of gluing, the implantation grooves 33 are preferably sized such that the reinforcing strips 2 can be easily inserted;

6. compacting each splice plate 3 through a roller press;

7. as shown in fig. 2, the splice plates 3 are spliced into a double-layer plate, one side of each splice plate 3 is opposite to the other side, the positioning protrusions 31 of the splice plate 3 on the upper layer correspond to the positioning grooves 32 of the splice plate 3 on the lower layer, the reinforcing strips 2 are embedded between the splice plate 3 on the upper layer and the embedding grooves 33 of the splice plate on the lower layer, and adhesive glue is applied during splicing to form a semi-finished plate; the position of the implanted groove 33 is at the position of the quartering line of the splice plate 3, the quartering line positioned in the middle of the splice plate 3 is not arranged, and the other two quartering lines are respectively provided with an implanted groove 33;

8. and (3) cutting off the redundant upper-layer splice plates 3, the lower-layer splice plates 3 and the reinforcing strips 2 at the edges of the semi-finished product board according to the size requirement, and finishing the processing of the bamboo board after surface post-treatment.

Wherein, the upper and lower both sides of the reinforcing strip 2 are respectively provided with a notch, and the notches are just opposite to the bottom surface of the splice plate 3.

The length of the reinforcing strip 2 is the same as the width of the splice plates 3, and the reinforcing strip 2 is embedded in the embedding groove 33 of the adjacent splice plate 3 at the same time.

The splice plates 3 on the upper layer and the splice plates 3 on the lower layer are distributed in a staggered way.

The bamboo board prepared by the method has very good effect as follows:

the strength between the splicing plate 3 on the upper layer and the splicing plate 3 on the lower layer is higher through the positioning protrusions 31 and the positioning grooves 32 arranged on one side of the tabasheer and the positioning protrusions 31 and the positioning grooves 32 in the shape of teeth; originally, be used for reducing stress, prevent dodging groove of bamboo timber expansion in-process fracture, processed into constant head tank 32 and location arch 31, not only can make the closely knit degree of panel after the concatenation improve, intensity increases, improves the utilization ratio of bamboo timber, but also can effectually prevent to misplace between splice plate 3 on upper strata and the splice plate 3 of lower floor, make the concatenation process simpler, the degree of difficulty of concatenation in-process reduces, the precision improves, the wholeness of panel is better.

As the surface and the bottom surface of the plate, bamboo knot parts are removed, so that the flatness, the attractiveness and the durability of the plate are improved, and in the process of treating the plate, because the bamboo knots are removed, the processing difficulty is also reduced, for example, in the process of surface treatment such as flattening and the like, the processing is easier and the flatness is higher, higher flatness, flatness and smoothness can be kept by cutting off smaller thickness, and the utilization rate of the plate is improved.

The bamboo knot has the characteristic of high strength, simultaneously, because the fiber density is high, the defect of easy rebound also exists after the bamboo knot is unfolded, through arranging the embedded groove 33 on the splice plates 3, the reinforcing strip 2 made of the bamboo knot is embedded into the embedded groove 33 between the splice plates 3 on the upper layer and the splice plates 3 on the lower layer, simultaneously, the direction of the reinforcing strip 2 is vertical to the direction of the positioning bulges 31 on the splice plates 3, namely vertical to the fiber direction of the bamboo wood, not only can the overall strength of the plate be improved, but also the transverse and longitudinal bending strength and the tensile strength of the plate are greatly improved, and the rebound characteristic of the reinforcing strip 2 can be utilized, so that the reinforcing strip 2 has the effect of a reed, the abutting strength between the splice plates 3 on the upper layer and the positioning bulges 31 between the splice plates 3 on the lower layer is higher, the compactness is better, the bamboo knot is utilized, and the utilization rate of the bamboo wood is higher, avoiding waste.

The crooked bounce-back of splice plate 3, the mode of piling up relatively between splice plate 3 through the splice plate 3 on upper strata and the splice plate 3 of lower floor is avoided, strengthen the implantation direction of strip 2, make the bounce-back of strengthening strip 2 go on the plane of panel, and utilize the bounce-back of strengthening strip 2, improve the whole concatenation intensity of panel, in this field, have outstanding technical contribution, and have qualitative leap on the roughness of panel, pleasing to the eye degree, the while has very big promotion in the utilization ratio to the bamboo timber.

Strengthen the upper and lower both sides of strip 2 and set up the notch, can "enlarge" the bounce-back effect of strengthening strip 2 on the one hand, make it bounce-back more easily, and can improve the bulk strength who strengthens strip 2, make the intensity of buckling of strengthening strip 2 higher.

Splice the splice plate 3 on upper strata and the splice plate 3 of lower floor of dislocation concatenation, the dislocation is implanted and is strengthened strip 2, makes the wholeness of panel stronger, and the intensity of panel and the integrality of panel are better.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. A method for processing a plate by taking unfolded bamboo wood as a raw material is characterized by comprising the following steps:

A. cutting a bamboo tube with two bamboo knots as a base material (1), classifying the base materials with the diameter difference within 5mm, and respectively performing the following processing procedures on each group of classified base materials;

B. longitudinally forming strip-shaped gaps (11) on the base materials, and placing the base materials with the gaps (11) in a softening kettle for stewing and softening;

D. transversely cutting the bamboo knot part, forming a strip-shaped reinforcing strip (2) at the bamboo knot part, and forming a rectangular splicing plate (3) by using the base material between adjacent bamboo knots;

E. cutting each splice plate (3) to enable each splice plate (3) to be processed into rectangular plates with equal thickness and equal side length; processing the avoiding groove to enable one side of the tabasheer to be processed into a structure with zigzag positioning bulges (31) and positioning grooves (32) matched with the positioning bulges (31) at intervals;

F. two implanting grooves (33) are formed in the splicing plate (3), and the implanting grooves (33) are perpendicular to the positioning protrusions (31);

G. compacting each splice plate (3) through a roller press;

H. splicing the splice plates (3) into double-layer plates, wherein one side of the bamboo yellow of each splice plate (3) is opposite, positioning protrusions (31) of the splice plate (3) on the upper layer correspond to positioning grooves (32) of the splice plate (3) on the lower layer, reinforcing strips (2) are embedded between the splice plate (3) on the upper layer and an embedding groove (33) of the splice plate on the lower layer, and bonding glue is coated during splicing to form a semi-finished plate;

I. the redundant upper layer splicing plates (3), the lower layer splicing plates (3) and the reinforcing strips (2) at the edges of the semi-finished board are cut off according to the size requirement, and the bamboo board is processed after surface post-treatment;

and the upper side surface and the lower side surface of the reinforcing strip (2) are respectively provided with a notch, and the notches are just opposite to the bottom surface of the splice plate (3).

2. The method for processing the board by taking the unfolded bamboo wood as the raw material as claimed in claim 1, wherein the length of the reinforcing strip (2) is the same as the width of the splicing plates (3), and the reinforcing strip (2) is simultaneously embedded in the embedding grooves (33) of the adjacent splicing plates (3).

3. The method for processing the board by taking the unfolded bamboo wood as the raw material according to the claim 1, wherein the splicing plates (3) on the upper layer and the splicing plates (3) on the lower layer are distributed in a staggered mode.