A spliced ​​wooden formwork for building construction and preparation method thereof

Abstract

The invention discloses a spliced ​​wooden formwork for construction, which is formed by splicing a plurality of wooden formwork units, wherein the back of the wooden formwork unit is provided with at least one hollow groove near the left and right ends and the upper and lower ends of the wooden formwork unit, and the left and right ends and the upper and lower ends of the wooden formwork unit are provided with at least one connection hole for the spliced ​​connector to pass through, and the connection hole is connected with the hollow groove. The invention has the advantages of many turnover times, short mold assembly and demolding time, and simple construction.

Description

Technical Field

[0001] The invention relates to the field of building templates, and in particular to a wooden template for building construction and a preparation method thereof. Background Art

[0002] In construction, formwork engineering is an important project. The quality of the formwork affects the quality and construction safety of the concrete project. At the same time, whether the formwork can be quickly disassembled and assembled will affect the progress of the project construction. At present, the entire construction industry still mainly uses ordinary wooden formwork or steel formwork. In recent years, aluminum alloy splicing formwork has replaced wooden formwork and steel formwork in small quantities and entered the construction. Ordinary wooden formwork uses wooden formwork and back ribs for supporting wooden formwork. Since the wooden formwork and back ribs are formed separately, the disassembly and assembly process is troublesome, the turnover rate is low, and a large amount of wood is consumed during the mold assembly process. The steel formwork is heavy, which is not conducive to handling and assembly. The price is much higher than that of ordinary wooden formwork. Although the turnover rate is high, it will bring a significant increase in construction costs for projects that do not need to be turned over two or three hundred times. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a spliced ​​wooden formwork for construction with a large turnover number, short formwork assembly and disassembly time, and simple construction, and a preparation method thereof.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A spliced ​​wooden formwork for construction is formed by splicing a plurality of wooden formwork units. The back of the wooden formwork unit is provided with at least one hollow groove near the left and right ends and the upper and lower ends of the wooden formwork unit. The left and right ends and the upper and lower ends of the wooden formwork unit are provided with at least one connection hole for the splicing connector to pass through. The connection hole is connected to the hollow groove.

[0006] As a further improvement to the above technical solution:

[0007] The hollow grooves near the left and right ends of the wood template unit include a plurality of hollow groove units arranged at intervals, and the hollow grooves near the upper and lower ends of the wood template unit include one hollow groove unit.

[0008] The thickness of the wooden formwork unit is D, and the depth of the hollow groove is d, which satisfies: 10mm≤Dd≤14mm. Within this range, the hollow groove depth can facilitate the use of connecting parts (bolts or pins and pins), and can also meet the support and weight reduction of the formwork.

[0009] The width of the wooden template unit is W, and the length is L, which satisfies L=n×W, where n is a positive integer.

[0010] 40mm≤D≤60mm, 200mm≤W≤1200mm, 1000mm≤L≤3000mm.

[0011] Preferably, 200mm≤W≤800mm.

[0012] The width of the hollow groove unit is w, and the length is l, satisfying 50mm≤l≤2350mm, 50mm≤w≤1150mm.

[0013] Preferably, 200mm≤l≤400mm, 50mm≤w≤100mm.

[0014] As a general inventive concept, the present invention also provides a method for preparing the aforementioned spliced ​​wooden formwork, comprising the following steps:

[0015] S1, drying a plurality of veneers, coating them with adhesive, assembling them into blanks, and hot pressing them to obtain blanks;

[0016] S2, sanding, repairing and leveling the surface of the slab and then veneer it to obtain a semi-finished wooden formwork unit;

[0017] S3, using an engraving machine to hollow out a hollow groove on the back of the semi-finished wooden template unit according to preset requirements, and drilling a connecting hole to obtain a wooden template unit;

[0018] S4. Splice the wooden formwork units into wooden formwork according to preset requirements to obtain a spliced ​​wooden formwork.

[0019] The thickness of the single board is 1.5-1.7 mm; the temperature of the hot pressing molding is 123-135°C, and the unit pressure is 12-15 kg / cm 2 .

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] The spliced ​​wooden formwork of the present invention does not require additional wooden reinforcement when in use, has a high turnover number (20 times or more), a short mold assembly and disassembly time, and simple construction. It can solve the defects that ordinary wooden formworks need to be reinforced with wooden reinforcement, the construction is complicated and the construction period is long, and it can also solve the problems that aluminum alloy spliced ​​formworks are expensive, the project cost is high, and the scope of use is not wide enough.

[0022] The preparation method of the present invention uses an engraving machine to hollow out a plurality of wooden template units into hollow grooves and drill connection holes and then directly splices them together. Compared with the conventional preparation method of first making a wooden template surface, splicing the wooden template surfaces, and then reinforcing the wooden template surfaces with wooden squares, the present invention is simple to operate and saves more time and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the wooden formwork unit.

[0024] Figure 2 It is a structural diagram of the spliced ​​wooden formwork.

[0025] The reference numerals in the figure indicate: 1, wooden template unit; 11, hollow groove; 111, hollow groove unit; 12, connecting hole. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Unless otherwise specified, the instruments or materials used in the present invention are commercially available.

[0027] A spliced ​​wooden formwork for construction of the present invention is formed by splicing a plurality of wooden formwork units 1, wherein at least one hollow groove 11 is respectively provided on the back of the wooden formwork unit 1 near the left and right ends and the upper and lower ends of the wooden formwork unit 1, and at least one connecting hole 12 for a spliced ​​connecting piece to pass through is respectively provided on the left and right ends and the upper and lower ends of the wooden formwork unit 1, and the connecting hole 12 is communicated with the hollow groove 11.

[0028] The hollow groove 11 near the left and right ends of the wood template unit 1 includes a plurality of hollow groove units 111 arranged at intervals, and the hollow groove 11 near the upper and lower ends of the wood template unit 1 includes one hollow groove unit 111.

[0029] The thickness of the wooden template unit 1 is D, and the depth of the hollow groove 11 is d, which satisfies: 10 mm ≤ Dd ≤ 14 mm.

[0030] The width of the wooden formwork unit 1 is W, and the length is L, which satisfies L=n×W, where n is a positive integer.

[0031] 40mm≤D≤60mm, 200mm≤W≤1200mm, 1000mm≤L≤3000mm.

[0032] The width of the hollow slot unit 111 is w, and the length is l, which satisfies 50mm≤l≤2350mm, 50mm≤w≤1150mm.

[0033] A method for preparing a spliced ​​wooden formwork of the present invention comprises the following steps:

[0034] S1, drying a plurality of veneers, coating them with adhesive, assembling them into blanks, and hot pressing them to obtain blanks;

[0035] S2, sanding, repairing and leveling the surface of the slab and then veneer it to obtain a semi-finished wooden formwork unit;

[0036] S3, using an engraving machine to hollow out a hollow groove 11 on the back of the semi-finished wooden template unit according to preset requirements, and drilling a connecting hole 12 to obtain a wooden template unit 1;

[0037] S4. The wooden formwork units 1 are spliced ​​into wooden formworks according to preset requirements to obtain spliced ​​wooden formworks.

[0038] The preparation method of the present invention uses an engraving machine to hollow out a hollow groove 11 and drill a connecting hole 12 for multiple wooden template units, and then directly splices them together. Compared with the conventional preparation method of first making a wooden template surface, splicing the wooden template surfaces, and then reinforcing the wooden template surfaces with wooden squares, the present invention is simple to operate and saves more time and cost.

[0039] Embodiment 1:

[0040] The preparation method of the spliced ​​wooden formwork of this embodiment is as follows: first, a 43mm slab is made, the slab is sanded to 40mm, the surface and bottom are repaired with putty, and then glass fiber or coated paper is re-applied to produce a 40mm semi-finished product. The semi-finished product is partially hollowed out by an engraving machine and then four sides are drilled to produce a template unit of the required size, which specifically includes the following steps:

[0041] A. Veneer drying: Veneer thickness 1.5-1.7mm (thickness of this embodiment is 1.6mm), drying temperature 60-80℃;

[0042] B. Assembly: The structure has 31 layers, starting from the bottom plate, one horizontal veneer and one vertical veneer are arranged alternately, and the glue application method is to alternately set one layer without glue and one layer with glue, using phenolic resin glue with a solid content of 45-50%, and the glue amount is 300-320g / ㎡. Each layer of wood veneer can be a whole board or a small panel splicing.

[0043] C. Hot pressing: holding temperature 123-135°C (129°C in this embodiment), holding time 65 minutes, unit pressure 12-15kg / cm 2 (This embodiment is 13kg / cm 2 ). The hot pressing controls the slab thickness to be 43mm.

[0044] D. Sanding: After hot pressing, the slab is sanded to a thickness of 40mm.

[0045] E. Repair: After sanding, use putty to repair the bottom of the slab to make it smooth.

[0046] F. Re-pasting: Brush glue on the bottom of the repaired slab and re-paste the bottom plate. The veneer material can be glass fiber or coated paper. When the veneer material is coated paper, glue is not required on both sides of the substrate. When glass fiber is used as the veneer material, glue is required on both sides of the substrate. The hot pressing temperature for re-pasting is 123-135℃ (129℃ in this embodiment), the holding time is 10 minutes, and the unit pressure is 6-8kg / cm 2 (This embodiment is 7kg / cm 2 ).

[0047] G. Forming: According to the required finished product size, use an engraving machine to partially hollow out the hollow groove 11 of the re-pasted slab according to the design drawing, so that the weight and strength of the wooden template unit meet the national standard design requirements. Then drill holes on the four sides of the wooden template unit to facilitate assembly during the construction process.

[0048] H. Paint the board edges, pack and store them.

[0049] I. The wooden formwork units 1 are spliced ​​into wooden formworks according to preset requirements to obtain spliced ​​wooden formworks.

[0050] This embodiment provides two sizes of wooden formwork units 1, one with a specification of 40 mm×400 mm×2400 mm, and the other with a specification of 40 mm×600 mm×2400 mm.

[0051] The wooden formwork units 1 are connected and spliced ​​into a larger spliced ​​formwork by using connecting pieces (bolts or pins and pins) through connecting holes 12 arranged at the edges of the boards.

[0052] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A method for preparing a spliced ​​wooden formwork, characterized in that: The following steps are involved: S1, drying a plurality of veneers, coating them with adhesive, assembling them into blanks, and hot pressing them to obtain blanks; S2, sanding, repairing and leveling the surface of the slab and then veneer it to obtain a semi-finished wooden formwork unit; S3, using an engraving machine to hollow out a hollow groove (11) on the back of the semi-finished wooden template unit according to preset requirements, and drilling a connecting hole (12), thereby obtaining a wooden template unit (1); S4, splicing the wooden formwork units (1) into wooden formwork according to preset requirements to obtain a spliced ​​wooden formwork; The spliced ​​wooden formwork is formed by splicing a plurality of wooden formwork units (1), the back of the wooden formwork unit (1) is provided with at least one hollow groove (11) in the direction close to the left and right ends and the upper and lower ends of the wooden formwork unit (1), and the left and right ends and the upper and lower ends of the wooden formwork unit (1) are provided with at least one connection hole (12) for the spliced ​​connection piece to pass through, and the connection hole (12) is connected to the hollow groove (11); The width of the wooden template unit is W, and the length is L, which satisfies L=n×W, where n is a positive integer.

2. The preparation method according to claim 1, characterized in that: The thickness of the single board is 1.5-1.7 mm; the temperature of the hot pressing molding is 123-135°C, and the unit pressure is 12-15 kg / cm 2 .

3. The preparation method according to claim 1, characterized in that: The hollow grooves (11) of the spliced ​​wooden template near the left and right ends of the wooden template unit (1) include a plurality of hollow groove units (111) arranged at intervals, and the hollow grooves (11) near the upper and lower ends of the wooden template unit (1) include one hollow groove unit (111).

4. The preparation method according to claim 3, characterized in that: The thickness of the wooden template unit (1) is D, and the depth of the hollow groove (11) is d, which satisfies: 10 mm ≤ Dd ≤ 14 mm.

5. The preparation method according to claim 4, characterized in that: 40mm≤D≤60mm, 200mm≤W≤1200mm, 1000mm≤L≤3000mm.

6. The preparation method according to claim 5, characterized in that: The width of the hollow groove unit (111) is w, and the length is l, which satisfies 50mm≤l≤2350mm, 50mm≤w≤1150mm.

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