Laminated wood end anti-cracking structure

Abstract

The utility model discloses a laminated wood end anti-cracking structure which comprises laminated wood, a cover plate and steel nails. The end of the laminated wood is provided with an inclined first slope, the middle of the laminated wood is provided with an insertion block consistent with the slope in gradient, the bottom of the laminated wood is provided with a check block, the corresponding position of the cover plate is provided with a second slope and an insertion groove which are matched with each other, the bottom of the insertion groove is provided with an opening and a receding groove, and the insertion block and the insertion groove are matched and tightly attached and coated with polyurethane adhesive to enhance connection stability. The inserting grooves are in a dovetail groove shape and prevent the laminates from degumming and cracking in the vertical direction, the steel nails are arranged at the joints of the cover plates and the laminated wood, the cover plates are prevented from loosening and falling off, the laminates are prevented from sliding and cracking in the horizontal direction, the cover plates are in a triangular prism shape matched with the whole laminated wood, and the appearance and use are not affected. The structure effectively prevents the end of the laminated wood from cracking, prolongs the service life, and is reasonable in design, high in practicability and suitable for protecting the end of the laminated wood product.

Description

TECHNICAL FIELD

[0001] The utility model relates to plywood technology field, concretely is a plywood end anti -cracking structure. BACKGROUND

[0002] Plywood is the most widely used engineering wood material in modern wood structure, which has high strength, small shrinkage deformation, and can be customized in shape and size. Currently, large-section special-shaped plywood components are widely used in domestic large public building projects.

[0003] The proportion of glue in the preparation process of plywood is very small, and the properties of plywood and solid wood are basically the same. The end of wood is the fastest part of water exchange with the outside world, so the end of wood is prone to cracking, and the end of plywood is also the same.

[0004] The utility model CN219132618U discloses a plywood end anti -cracking structure, including the plywood that is formed by the plywood layer board of a plurality of, the plywood is fixed through the adhesion, the end side wall of the plywood is equipped with the recess towards the recess of the plywood body direction, still including the apron, the apron is fixed and is equipped with the fender, the fender is inserted into the recess, the side wall of the recess and the side wall of the fender are opposite, and the end of the plywood is blocked by the apron, the area of the end of the plywood and the outside air contact is reduced, and then the water loss speed of the end of the plywood is slowed down, so that the service life of the plywood can be improved.

[0005] However, since the two ends of the apron do not have a blocking piece, the plywood cannot be prevented from opening and cracking along the channel between the blocking plates, and even the frame can be scattered. Utility model content

[0006] In view of the technical problems in the prior art, the utility model provides a plywood end anti -cracking structure, which aims to solve the above problems.

[0007] To achieve the above purpose, the utility model provides the following technical scheme:

[0008] A plywood end anti -cracking structure, comprising a plurality of plywood layer boards glued together, the end of the plywood is provided with a cover plate that can be inserted into the end, the end is inclined first slope, the middle of the first slope is provided with an insertion block with the same inclination as the first slope, the top of the insertion block is lower than the upper end surface of the plywood, the bottom of the insertion block is provided with a blocking piece, the cover plate is provided with a second slope corresponding to the first slope, the middle of the second slope is provided with an insertion slot corresponding to the insertion block, the bottom of the insertion slot is provided with an opening for inserting the insertion block, and the bottom of the insertion slot is provided with a recess for the blocking piece.

[0009] Preferably, the inner wall of the insertion slot and the insertion block are coated with oil polyurethane adhesive.

[0010] Preferably, the plug block is dovetail-shaped, and the plug slot is dovetail-shaped.

[0011] Preferably, the cover plate is provided with a steel nail at the joint with the glued wood end, the steel nail is arranged perpendicularly to the end surface of the glued wood, and is located at the side of the glued wood end provided with the inclined surface.

[0012] Preferably, the cover plate is triangular prism-shaped.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The glued wood end anti-cracking structure has the following advantages: the glued wood end bottom glued wood plate is difficult to crack in the vertical direction after the cover plate is inserted and matched with the dovetail; the top of the glued wood end is limited by the plug block top lower than the upper end surface of the glued wood and clamped in the plug slot top, so that the top glued wood plate is prevented from cracking in the vertical direction; the steel nail arranged in the vertical direction and the dovetail prevent the glued wood plate from being horizontally peeled or cracked; the cover plate is blocked at the glued wood end to slow down the evaporation speed of the moisture of the glued wood end, thereby prolonging the service life of the glued wood; and the shape of the cover plate is triangular prism-shaped, so that the glued wood is not affected in appearance and use after assembly. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a front overall split schematic view of the glued wood end anti-cracking structure.

[0016] Fig. 2 It is a front sectional view of the glued wood end anti-cracking structure, and a side view of the glued wood end and the cover plate.

[0017] In the figure: 1, glued wood; 11, first inclined surface; 12, plug block; 13, stop block; 2, cover plate; 21, second inclined surface; 22, plug slot; 221, opening; 222, accommodation slot; 3, steel nail. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] Please refer to Figs. 1-2The application provides a glued wood end crack prevention structure, which comprises glued wood 1, wherein the glued wood 1 is formed by gluing a plurality of glued wood layers, the end of the glued wood 1 is provided with a cover plate 2 which can be inserted into the end, the end is provided with a first inclined surface 11, the middle of the first inclined surface 11 is provided with an insertion block 12 which has the same inclination as the first inclined surface 11, the top of the insertion block 12 is lower than the upper end surface of the glued wood 1, the bottom of the insertion block 12 is provided with a stop block 13, the cover plate 2 is provided with a second inclined surface 21 which is matched with the first inclined surface 11, the middle of the second inclined surface 21 is provided with an insertion slot 22 which is matched with the insertion block 12, the bottom of the insertion slot 22 is provided with an opening 221 for inserting the insertion block 12, and the bottom of the cover plate 2 is provided with a gap slot 222 which is matched with the stop block 13, so that the cover plate 2 can be tightly combined with the end of the glued wood 1, and the insertion block 12 and the insertion slot 22 are matched to realize firm connection.

[0020] In order to further enhance the stability of the connection, polyurethane adhesive is coated between the inner wall of the insertion slot 22 and the insertion block 12. The polyurethane adhesive has good adhesion and waterproofness, can effectively prevent the invasion of water, and can enhance the bonding strength between the insertion block 12 and the insertion slot 22. The design not only improves the reliability of the crack prevention structure, but also prolongs the service life of the glued wood 1.

[0021] The insertion block 12 is in the shape of a dovetail, and the insertion slot 22 is in the shape of a matching dovetail groove. The design of the dovetail makes the connection between the insertion block 12 and the insertion slot 22 more firm, and can effectively prevent the glued wood 1 layers from being delaminated or cracked in the vertical direction. The structure is widely used in traditional woodworking technology and has high stability and reliability.

[0022] In order to further enhance the crack prevention effect, the connection between the cover plate 2 and the end of the glued wood 1 is provided with a steel nail 3 which is perpendicular to the end surface of the glued wood 1 and located on the side of the end of the glued wood 1 which is provided with the inclined surface. The steel nail 3 can further fix the cover plate 2 and the end of the glued wood 1, prevent the cover plate 2 from loosening or falling off due to external force, and prevent the glued wood 1 layers from sliding and cracking in the horizontal direction.

[0023] The cover plate 2 is in the shape of a triangular prism which is matched with the whole glued wood 1. The design makes the cover plate 2 perfectly combined with the whole glued wood 1 after assembly, does not affect the overall appearance of the glued wood 1 and the later use, and at the same time, the triangular prism-shaped cover plate 2 can better adapt to the shape of the end of the glued wood 1, improve the integrity and aesthetics of the crack prevention structure, and can also be designed into other matched shapes according to actual use requirements.

[0024] Through the description of the above embodiment, the end crack prevention structure of the glued wood 1 can effectively prevent the end of the glued wood 1 from cracking, through the design of the inclined surface and the dovetail, the glued wood 1 end bottom and top board is difficult to be delaminated and cracked in the vertical direction, at the same time, combined with the setting of the steel nail 3 and the dovetail in the vertical direction, the glued wood 1 layer is prevented from delaminating or moving horizontally, the cover plate 2 is blocked at the end of the glued wood 1, the evaporation speed of the moisture of the glued wood 1 end is slowed down, and the service life of the glued wood 1 is further improved, in addition, the shape of the cover plate 2 is a triangular prism that fits the whole glued wood 1, so that it does not affect the overall appearance of the glued wood 1 after assembly and the later use, the crack prevention structure is reasonable in design and high in practicability, and is especially suitable for end protection of glued wood products, and has remarkable practicability and innovativeness.

[0025] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a... " does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0026] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0027] Although embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A structure for preventing cracks in the end of a glued laminated timber, comprising a glued laminated timber (1) formed by gluing a plurality of laminated timber planks, and a cover (2) which is inserted into the end of the glued laminated timber (1), characterized in that, The first inclined surface (11) at the end of the head, the first inclined surface (11) is provided with an insert block (12) in the middle of the first inclined surface (11) which is consistent with the inclination of the first inclined surface (11), the top of the insert block (12) is lower than the upper end surface of the glued wood (1), the bottom of the insert block (12) is provided with a stop block (13), the cover plate (2) is provided with a second inclined surface (21) corresponding to the first inclined surface (11), the second inclined surface (21) is provided with an insert slot (22) corresponding to the insert block (12) in the middle of the second inclined surface (21), the bottom of the insert slot (22) is provided with an opening (221) for inserting the insert block (12), and the bottom of the insert slot (22) is provided with a clearance groove (222) corresponding to the stop block (13).

2. The laminated wood end post crack prevention structure according to claim 1, wherein The inner side wall of the insert slot (22) and the insert block (12) are coated with polyurethane adhesive.

3. The laminated wood end post crack prevention structure according to claim 2, wherein The insert block (12) is dovetail-shaped, and the insert slot (22) is dovetail-shaped.

4. The laminated wood end post crack prevention structure according to claim 3, wherein The cover plate (2) is provided with a steel nail (3) at the connection between the cover plate (2) and the end of the glued wood (1), the steel nail (3) is perpendicular to the end surface of the glued wood (1), and is located on the side of the end of the glued wood (1) provided with the inclined surface.

5. The laminated wood end post crack prevention structure of claim 1, wherein The cover plate (2) is in the shape of a triangular prism which fits the whole glued wood (1).

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