Plywood cold-pressing glue cold-pressing laminating process

Abstract

The invention relates to the technical field of plywood processing, and discloses a plywood cold-pressing glue cold-pressing laminating process which comprises the following steps: S1, cutting a wood board; s2, cleaning; s3, wood board drying; s4, the veneers are glued; s5, fitting and assembling the blank; s6, cold pressing; s7, sanding is conducted; a gluing machine is used for gluing double faces of an odd number of veneers, one face of an odd number of veneers located on the outermost side is glued, the glued veneers are attached, the fiber directions of the adjacent layers of veneers are perpendicular to each other, and one sides and one ends of the veneers are aligned to each other. According to the plywood cold-pressing glue cold-pressing laminating process, when a plurality of veneers of plywood are laminated, one sides of the veneers are aligned with one ends of the veneers, so that redundant parts of the veneers can be cut out, and the loss of materials is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of plywood processing, and specifically to a cold pressing and bonding process for cold pressing glue of plywood. Background Art

[0002] Plywood is a multi-layer board material made by slicing wood segments into veneers or planing wood squares into thin woods, and then gluing them with adhesives. Usually, an odd number of veneers are used, and the fiber directions of adjacent veneers are glued perpendicular to each other. The number of layers of plywood is usually an odd number such as three layers, five layers or seven layers, which can ensure that the fiber directions of adjacent veneers are perpendicular to each other, thereby improving the strength and stability of the board. During the processing of plywood, the veneers need to be cold pressed and bonded to form plywood.

[0003] When the existing plywood veneers are cold pressed and bonded, it is easy for the multiple veneers to be bonded unevenly and not tightly during bonding, resulting in gaps between the plywood veneers and reducing the quality of the plywood. Summary of the Invention

[0004] (I) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the present invention provides a cold pressing and bonding process for cold pressing glue of plywood, which has the advantage of improving the strength of plywood and solves the problems of uneven and loose bonding of plywood.

[0006] (II) Technical Solutions

[0007] To achieve the above object, the present invention provides the following technical solutions: A cold pressing and bonding process for cold pressing glue of plywood, including the following steps:

[0008] S1. Cut the wood board;

[0009] S2. Clean;

[0010] S3. Dry the wood board;

[0011] S4. Apply glue to the veneer;

[0012] S5. Bond and form the embryo;

[0013] S6. Cold press;

[0014] S7. Sand;

[0015] S4. Apply glue to the veneer: Use a glue applicator to apply glue to both sides of the odd-numbered veneers, and apply glue to one side of the odd-numbered veneers on the outermost side;

[0016] S5. Bond and form the embryo: Bond the veneers after applying glue, with the fiber directions of adjacent veneers perpendicular to each other, and one side and one end of multiple veneers aligned with each other.

[0017] Preferably, S1. Slitting the wooden board: The log is processed into thin wood chips with a thickness of 0.3 - 8 mm by a veneer lathe;

[0018] S2. Cleaning: Use cleaning equipment to clean the sawdust and dust on both sides of the wooden board;

[0019] S3. Drying the wooden board: Use drying equipment to dry the wooden board, and the moisture content of the dried wooden board is controlled between 8 - 16%;

[0020] S6. Cold pressing: Place the laminated and assembled board on a cold press, and press and laminate the assembly with a cold press with stable pressure.

[0021] Preferably, S7. Sanding: Use a cutting machine to cut the four sides of the plywood, and sand the surface of the cut plywood.

[0022] Preferably, the air flow temperature for drying the wooden board by the drying equipment is maintained between 100°C and 250°C.

[0023] Preferably, the temperature during cold pressing of the plywood is maintained below 23 - 25°C.

[0024] Preferably, before use, the adhesive and the curing agent are mixed in proportion.

[0025] Preferably, the error in the thickness of multiple veneers is controlled within 0.2 mm.

[0026] Compared with the prior art, the present invention provides a cold pressing and laminating process for plywood cold pressing glue, having the following beneficial effects:

[0027] 1. In this cold pressing and laminating process for plywood cold pressing glue, when multiple veneers of the plywood are laminated, one side and one end of multiple veneers are aligned, so that the extra parts of the veneers can be cut off, thereby reducing material loss.

[0028] 2. In this cold pressing and laminating process for plywood cold pressing glue, by coating both sides of the odd-numbered veneers, the veneers with glue and the veneers without glue can be conveniently laminated together. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a process flow chart of the cold pressing and laminating process for plywood cold pressing glue of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figure 1 , a cold pressing and laminating process for plywood cold pressing glue, comprising the following steps:

[0032] S1. Slitting the wood board: The log is processed by a veneer lathe into thin wood slices with a thickness of 0.3 - 8 mm; the error of the thickness of multiple veneers is controlled within 0.2 mm;

[0033] S2. Cleaning: Use cleaning equipment to clean the wood chips and dust on both sides of the wood board;

[0034] S3. Drying the wood board: Use a drying equipment to dry the wood board, and the moisture content of the dried wood board is controlled between 8 - 16%; the air flow temperature of the drying equipment for drying the wood board is maintained between 100°C and 250°C.

[0035] S4. Gluing the veneer: Use a gluing machine to glue both sides of the odd-numbered veneers, and glue one side of the outermost odd-numbered veneer; before using the adhesive, mix the adhesive and the curing agent in proportion.

[0036] S5. Laminating and embryo forming: Laminate the glued veneers, and the fiber directions of adjacent layers of veneers are perpendicular to each other, and one side and one end of multiple veneers are aligned with each other.

[0037] When laminating multiple veneers of plywood, one side and one end of multiple veneers are aligned, so that the extra parts of the veneers can be cut off, thereby reducing the material loss.

[0038] S6. Cold pressing: Place the laminated and embryo-formed board on a cold press, and press the embryo by a cold press with stable pressure; the temperature during cold pressing of plywood is maintained below 23 - 25°C.

[0039] S7. Sanding: Use a cutting machine to cut the four sides of the plywood, and sand the surface of the cut plywood; sand both sides of the plywood through a sanding equipment to improve the flatness of the plywood.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cold pressing and laminating process for cold pressing glue of plywood, characterized in that, It includes the following steps: S1. Cut the wooden board; S2. Clean; S3. Dry the wooden board; S4. Glue the veneer; S5. Bond and assemble; S6. Cold press; S7. Sand; S4. Glue the veneer: Use a gluing machine to glue both sides of the odd-numbered veneers, and glue one side of the odd-numbered veneer on the outermost side; S5. Bond and assemble: Bond the glued veneers, with the fiber directions of adjacent veneer layers perpendicular to each other, and one side and one end of multiple veneers aligned with each other.

2. A cold press bonding process for plywood cold press glue according to claim 1, characterized in that: S1. Cut the wooden board: Cut the log into thin wood chips with a thickness of 0.3 - 8 mm by a veneer lathe; S2. Clean: Use cleaning equipment to clean the sawdust and dust on both sides of the wooden board; S3. Dry the wooden board: Use a drying equipment to dry the wooden board, and control the moisture content of the dried wooden board between 8 - 16%; S6. Cold press: Place the assembled board after bonding on a cold press, and press the assembly through a cold press with stable pressure.

3. A cold pressing and laminating process for plywood cold pressing glue according to claim 2, characterized in that: S7. Sand: Use a cutting machine to cut the periphery of the plywood, and sand the surface of the cut plywood.

4. A cold pressing and laminating process for cold pressing glue of plywood according to claim 2, characterized in that: The air flow temperature of the drying equipment for drying the wooden board is maintained between 100°C and 250°C.

5. A cold pressing and laminating process for cold pressing glue of plywood according to claim 1, characterized in that: The temperature during the cold press of the plywood is maintained below 23 - 25°C.

6. A cold pressing and bonding process for plywood cold pressing glue, according to claim 1, characterized in that: Before use, mix the adhesive and the curing agent in proportion.

7. A cold pressing and laminating process for plywood cold pressing glue, according to claim 2, characterized in that: The error in the thickness of multiple veneers is controlled within 0.2 mm.

Images