Square box structure wooden formwork

Abstract

The present application discloses a square box structure wooden mold, comprising a plurality of solid wood strips, the solid wood strips are connected together to form a skeleton, and also comprising multilayer boards, the multilayer boards are arranged on the four edges of the skeleton, and the multilayer boards surround an openable and closable square box, the inner wall or outer wall of the box is a working surface; when the inner wall of the box is a working surface, the skeleton is located outside the box, and when the outer wall of the box is a working surface, the skeleton is located inside the box. The square box structure wooden mold has the following beneficial effects: compared with solid wood, the multilayer board is less likely to absorb water, will not crack when used, has higher precision, and is more convenient and more economical to stack than solid wood.

Description

Technical Field

[0001] The invention relates to the field of moulds, in particular to a square box structure wooden mould. Background Art

[0002] The traditional square box wooden mold is the same as the cylindrical structure wooden mold, which uses pure wood as the skeleton and solid wood as the outer edge working surface of the wooden mold. Although such a wooden mold ensures the rigidity of the wooden mold, it also has the following disadvantages: the solid wood stacking on the outer edge will consume more wood, the stacking and processing of wood will consume a lot of man-hours, the stacking of wood will increase the bonding surface between the boards and affect the demolding, and the change of air humidity will make it difficult to stably control the moisture content of the wood, causing the wooden mold to crack or deform. Summary of the invention

[0003] In view of the above problems, the present invention provides a square box structure wooden formwork.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A square box structure wooden mold includes a plurality of solid wood strips connected together to form a skeleton, and also includes multilayer boards, which are arranged on the four edges of the skeleton and surround an openable and closable square box, wherein the inner wall or the outer wall of the box is a working surface; when the inner wall of the box is the working surface, the skeleton is located outside the box, and when the outer wall of the box is the working surface, the skeleton is located inside the box.

[0006] Compared with solid wood, multi-layer boards are less likely to absorb water, will not crack during use, have higher precision, and are more convenient and economical to stack than solid wood.

[0007] Optionally, the solid wood strips are cross-fixed together; when the frame is outside the box, the solid wood strips form a quadrilateral, and when the frame is inside the box, the solid wood strips are connected together to form a cross.

[0008] Optionally, plastic foam is filled between the multilayer board and the solid wood strips.

[0009] The filled foam plastic can enhance the elasticity of the entire wooden mold, that is, the wooden mold has a certain degree of yield when it is partially squeezed during demolding, which provides convenience for demolding. At the same time, because the plastic foam is arranged between the solid wood strips and the multi-layer board, the support effect between the solid wood strips and the multi-layer board can be increased.

[0010] Optionally, the multilayer board includes several layers of wooden boards, silica nanoparticles, brass plates and water-based glue, the wooden boards are bonded to both sides of the brass plates by the water-based glue, and the silica nanoparticles are bonded to the wooden boards and the brass plates by the water-based glue.

[0011] Optionally, the steps for preparing the multilayer board are as follows:

[0012] S1: Soak the wood board and the brass board in a sodium hydroxide solution for 5 to 10 minutes, then soak them in a dilute hydrochloric acid solution for 5 to 10 minutes, then ultrasonically treat them in deionized water for 20 minutes, and finally dry them at 45°C to 50°C.

[0013] S2: Stir and evenly dissolve the silicon dioxide nanoparticles in the water-based glue, maintain the temperature of the water-based glue at 50°C to 60°C, then place the wooden board and the brass plate in the water-based glue, and make the wooden board located on both sides of the brass plate and close to the brass plate, clamp the brass plate and the wooden board together with a pressure of 50Mpa to 60Mpa, and apply pressure for 20min to 25min;

[0014] S3: Use airflow at 10℃~15℃ to dry the glue and polish it smooth.

[0015] This scheme uses brass plates, wooden boards (which can be solid wood or composite boards), nano-silicon dioxide particles and water-based glue to prepare multi-layer boards. Compared with traditional three-ply boards or five-ply boards (three-ply boards and five-ply boards are common types of multi-layer boards), the interlayer prepared by this scheme not only has good elasticity, but also has high strength, is not easy to break, is hydrophobic, will not absorb water and crack, has a wide applicable temperature range, and is less affected by thermal expansion and contraction.

[0016] First of all, the brass plate has good rigidity compared to the wooden board, and brass is less affected by thermal expansion and contraction. Therefore, compared with the pure wooden board structure, the use of brass composite template will make the entire multilayer board have higher hardness and less prone to breakage.

[0017] At the same time, water-based glue is used to bond the brass plate and the wooden board together, and the hydrophobic properties of the water-based glue and nano-silicon dioxide particles are used again to make the entire multilayer board less likely to absorb water and deliquesce.

[0018] Optionally, the shape of the brass plate is consistent with that of the wooden board, and the thickness of the brass plate is 3 to 4 mm, and the thickness of each wooden board is 5 to 10 mm.

[0019] Optionally, the mass ratio of the aqueous glue to the silica nanoparticles is 300:1.

[0020] Optionally, there are two wooden boards, which are respectively located on both sides of the brass plate, and the thickness of the brass plate is 3 mm, the thickness of the wooden board is 10 mm, and the thickness of the water-based glue is 0.2 mm.

[0021] Optionally, the oxygen volume fraction of the airflow is lower than 15%, and the humidity of the airflow is lower than 35%.

[0022] The oxygen content in the airflow is less than 15% to ensure that the oxygen content in the bubbles is low after solidification, which can reduce the oxidation of the bubbles on the brass plate and the wood board and extend the service life of the entire multilayer board. The humidity of the airflow is less than 35% so that the gas can quickly absorb moisture and dry the entire multilayer board.

[0023] Optionally, the speed of the airflow is 6 to 8 m / s.

[0024] The purpose of using this air speed to blow dry is to ensure that no excessive burrs are left on the surface of the glue while drying the glue, which makes it easier for the next step of polishing.

[0025] The wooden board in this solution can be a wooden board made of solid wood, or a plywood made of a mixture of sawdust and glue, or other composite boards. In this solution, a wooden board made of solid wood is preferred.

[0026] The beneficial effects of the present invention are: compared with solid wood, the multilayer board is less likely to absorb water, will not crack during use, has higher precision, and is more convenient and economical to stack than solid wood. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of Example 1,

[0028] Figure 2 is a schematic structural diagram of Example 2,

[0029] Figure 3 It is a schematic diagram of the structure of Example 3.

[0030] The reference numerals in the figures are: 1, solid wood strip, 2, multilayer board, 201, wooden board, 202, brass board, 3, plastic foam. DETAILED DESCRIPTION

[0031] The present invention is described in detail below in conjunction with the accompanying drawings.

[0032] Example 1

[0033] As attached Figure 1 As shown, a square box structure wooden mold with a working surface as the inner wall surface, solid wood strips 1 are spliced ​​and fixed together to surround a quadrilateral frame, and multilayer boards 2 are fixed on the frame to surround an openable and closable square box, and the multilayer boards 2 serve as the working surface of the box, and plastic foam 3 is filled between the multilayer boards 2 and the solid wood strips 1. The solid wood strips 1 can be connected by nails or welded together. The multilayer boards 2 and the solid wood strips 1 can be fixed by nails or directly clamped together, and the multilayer boards 2 can be connected by nails or glued together.

[0034] Example 2

[0035] As attached Figure 2 As shown, a square box structure wooden mold with a working surface as the outer wall, solid wood strips 1 are fixed together to form a cross-shaped frame, multilayer boards 2 are fixed on the four edges of the frame, and the multilayer boards 2 are surrounded by a square box, and the outer wall of the box is the working surface, and foam plastic 3 is filled between the solid wood strips 1 and the multilayer boards 2.

[0036] Example 3

[0037] A method for preparing a multilayer board, see attached Figure 3 , including a brass plate 202 and a wooden board 201 , wherein the wooden board 201 is attached to both sides of the brass plate 202 .

[0038] The preparation method is as follows,

[0039] S1: Soak a 10mm thick wooden board and a 3mm thick brass board in a 0.1mol / L sodium hydroxide solution for 5 minutes, then soak them in a 0.1mol / L dilute hydrochloric acid solution for 5 minutes, then ultrasonically treat them in deionized water for 20 minutes, and finally dry them with a 45℃~50℃ airflow; the volume proportion of oxygen in the airflow is 15%, the proportion of nitrogen is 82%, the humidity of the airflow is 35%, and the gas flow rate is 7m / s;

[0040] S2: 1 part of silica nanoparticles is stirred and uniformly dissolved in 300 parts of water-based glue, and the temperature of the water-based glue is maintained at 55°C. Then, the wooden board 201 and the brass plate 202 are placed in the water-based glue, and the wooden board is located on both sides of the brass plate and is close to the brass plate. The brass plate and the wooden board are clamped together with a pressure of 55 MPa, and the pressure application time is 25 minutes;

[0041] S3: Use airflow at 10℃~15℃ to dry the glue, and polish it to make it smooth, and control the thickness of the entire glue layer to be 0.2mm; the oxygen volume proportion of the airflow is 15%, the nitrogen volume proportion is 85%, the humidity of the airflow is 35%, and the gas flow rate is 7m / s.

[0042] The above description is only a preferred embodiment of the present invention, and does not limit the patent protection scope of the present invention. Any equivalent structural transformation made by using the contents of the present invention and the drawings, directly or indirectly used in other related technical fields, is also included in the protection scope of the present invention.

Claims

1. A square box structure wooden formwork, comprising a plurality of solid wood strips, wherein the solid wood strips are connected together to form a skeleton, characterized in that: It also includes multilayer boards, which are arranged on the four edges of the frame, and the multilayer boards surround a square box that can be opened and closed, and the inner wall or outer wall of the box is a working surface; when the inner wall of the box is the working surface, the frame is located outside the box, and when the outer wall of the box is the working surface, the frame is located inside the box; The multilayer board includes several layers of wooden boards, silicon dioxide nanoparticles, a brass plate and water-based glue, wherein the wooden boards are bonded to both sides of the brass plate by the water-based glue, and the silicon dioxide nanoparticles are bonded to the wooden boards and the brass plate by the water-based glue; The steps for preparing the multilayer board are as follows: S1: Soak the wood board and the brass board in a sodium hydroxide solution for 5 to 10 minutes, then soak them in a dilute hydrochloric acid solution for 5 to 10 minutes, then ultrasonically treat them in deionized water for 20 minutes, and finally dry them at 45°C to 50°C. S2: Stir and evenly dissolve the silicon dioxide nanoparticles in the water-based glue, maintain the temperature of the water-based glue at 50°C to 60°C, then place the wooden board and the brass plate in the water-based glue, and make the wooden board located on both sides of the brass plate and close to the brass plate, clamp the brass plate and the wooden board together with a pressure of 50Mpa to 60Mpa, and apply pressure for 20min to 25min; S3: Use airflow at 10℃~15℃ to dry the glue and polish it smooth.

2. The square box structure wooden formwork according to claim 1, characterized in that: The solid wood strips are cross-fixed with each other; when the frame is outside the box, the solid wood strips form a quadrilateral, and when the frame is inside the box, the solid wood strips are connected together to form a cross.

3. The square box structure wooden formwork according to claim 2, characterized in that: Plastic foam is filled between the multilayer board and the solid wood strips.

4. The square box structure wooden formwork according to claim 1, characterized in that: The shape of the brass plate is consistent with that of the wooden board, and the thickness of the brass plate is 3-4 mm, and the thickness of each wooden board is 5-10 mm.

5. The square box structure wooden formwork according to claim 1, characterized in that: The mass ratio of the water-based glue to the silicon dioxide nanoparticles is 300:

1.

6. The square box structure wooden formwork according to claim 4, characterized in that: There are two wooden boards, which are respectively located on both sides of the brass plate. The thickness of the brass plate is 3 mm, the thickness of the wooden board is 10 mm, and the thickness of the water-based glue is 0.2 mm.

7. The square box structure wooden formwork according to claim 1, characterized in that: The oxygen volume percentage of the airflow is less than 15%, and the humidity of the airflow is less than 35%.

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