A fixing device for processing of a fair-faced concrete arc structure keel

Abstract

The utility model relates to a kind of fixing device for fair-faced concrete arc structure keel processing, it includes density board, lower backing plate, upper backing plate, screw nail, nail and the square wood to be processed;Wherein, the lower backing plate and upper backing plate are sequentially stacked on the density board and placed, and the lower backing plate and upper backing plate are fixed by screw nail;Multiple square wood to be processed is fixed in the upper backing plate by the nail.The utility model is more simple, natural and smooth than traditional arc structure keel production, and the arc of arc keel and radius control precision.Wood square is arc keel, so that formwork is naturally curved into the arc surface required on arc keel and stable, integral, high strength, not prone to quality problems such as expansion mold, irregular deformation of formwork surface, broken line in concrete pouring overlength, greatly improve the appearance effect of arc fair-faced concrete structure.

Description

Technical Field

[0001] This utility model relates to a building concrete formwork structure, specifically to a fixing device for processing arc-shaped square timber. Background Technology

[0002] In the construction of fair-faced concrete projects, the construction technology and quality control of curved structures have always been challenging. Fair-faced concrete requires one-time molding to maintain the original appearance of the concrete. The appearance of fair-faced curved structures requires smooth curved surfaces and arc radii that conform to the design. The conventional construction method for curved structures is to divide the formwork into several strips and assemble them into an arc, using bent steel bars as curved joists or bent steel pipes as main joists. During the concrete pouring process, the joists are prone to uneven deformation, resulting in an uneven, wavy surface on the concrete structure. This can also lead to problems such as formwork bulging, severe water loss at the joints, and grout leakage, seriously affecting the appearance of fair-faced concrete, increasing the cost of later repairs, and causing dust and noise pollution to the environment. In addition, the use of standardized steel formwork for fair-faced curved structures is costly, has limited versatility, is heavy, poses a high risk, and easily leads to material waste.

[0003] Overall, wooden curved templates formed by directly cutting logs have good fixation properties and are less prone to the problems mentioned above. The core of wooden curved templates lies in obtaining the curved structure formed by cutting and processing; however, existing curved structure processing is usually done individually and independently, which is inefficient and lacks a dedicated fixing structure for the square timber to be processed. As a result, the square timber is prone to misalignment and movement during processing, leading to a decrease in processing accuracy. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the shortcomings of the prior art, thereby providing a fixing device specifically for processing square timber with arc-shaped structures, so as to improve processing accuracy and efficiency.

[0005] To achieve the above objectives, this utility model provides a fixing device for processing the keel of the arc structure of fair-faced concrete, which includes a density board, a lower pad, an upper pad, screws, nails, and square timber to be processed. The lower pad and the upper pad are stacked on the density board in sequence, and the lower pad and the upper pad are fixed together by screws; multiple square timbers to be processed are fixed to the upper pad by the nails.

[0006] Preferably, the head of the nail is inserted into the lower pad.

[0007] Preferably, the nails are provided at both ends of the square timber to be processed.

[0008] Preferably, the depth to which the nail penetrates the lower pad is less than 7mm; Preferably, the thickness of the lower pad and the upper pad is 15mm.

[0009] Preferably, the screws are fixed on both sides of the lower pad, with no less than four screws on each side.

[0010] Preferably, the screw penetrates into the lower pad to a depth of not less than 7 mm.

[0011] Preferably, the dimensional parameters of the timber to be processed are encoded.

[0012] Preferably, it also includes a processing blade for forming arc-shaped edges on both sides of the square timber to be processed.

[0013] The beneficial effects of this utility model are as follows: 1. It is simpler and more natural to make than the traditional curved keel structure, and the curvature and radius of the curved keel can be precisely controlled.

[0014] 2. The curved keel formed by directly processing timber allows the formwork to bend naturally into the required arc surface on the curved keel and remain stable. It has good integrity and high strength. It is less likely to cause quality problems such as formwork bulging, irregular deformation of the formwork surface, and broken lines during long concrete pouring, which greatly improves the appearance of the curved fair-faced concrete structure.

[0015] 3. The use of a fixed structure facilitates the cutting and processing of multiple curved square timbers, improving work efficiency. Furthermore, the entire fixed device is stable, preventing displacement during cutting and further enhancing work efficiency. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of a fixing device for processing the keel of an arc-shaped structure in fair-faced concrete according to this utility model; Figure 2 This is a structural schematic diagram of another angle of a fixing device for processing the keel of a fair-faced concrete arc structure according to this utility model. Figure 3 This is a schematic diagram showing the fixed installation of the MDF and pad on the processing platform and the connection of the vacuum pump according to this utility model.

[0018] Explanation of reference numerals in the attached figures: 1-MDF; 2-Lower backing plate; 3-Upper backing plate; 4-Screw; 5-Nail; 6-Wooden timber to be processed; 7-Processing cutter head; 8-Processing platform; 11-Positioning post; 13-Vacuum pump. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Example 1: like Figure 1 and Figure 2 As shown, this embodiment provides a fixing device for processing the keel of the arc structure of fair-faced concrete, which includes a density board 1, a lower pad 2, an upper pad 3, screws 4, nails 5 and square timber to be processed 6. The lower pad 2 and the upper pad 3 are stacked on the MDF 1 in sequence, and the lower pad 2 and the upper pad 3 are fixed together by screws 4; multiple square timbers 6 to be processed are fixed on the upper pad 3 by nails 5.

[0021] It should be noted that in the existing technology, the lower pad 2 and the upper pad 3 are ordinary wooden boards, and their thickness is generally around 15mm, while the thickness of the square timber 6 to be processed is usually around 30mm. If a single pad is used, it is easy to penetrate the bottom of the pad when fixing it with nails 5. Therefore, setting two sets of pads, namely the lower pad 2 and the upper pad 3, can fix the square timber 6 to be processed above well with nails 5, and can ensure that there is enough thickness without penetrating the pad.

[0022] Example 2: Based on Example 1, as a preferred embodiment, in this embodiment the head of the nail 5 is inserted into the lower pad 2.

[0023] Preferably, the nails 5 are respectively provided at both ends of the square timber 6 to be processed.

[0024] Preferably, the depth to which the nail 5 penetrates the lower pad 2 is within 7mm; Preferably, the thickness of the lower pad 2 and the upper pad 3 is 15mm.

[0025] Preferably, the screws 4 are fixed to both sides of the lower pad 2, with no fewer than 4 screws on each side. This structure effectively combines and fixes the two sets of pads.

[0026] Preferably, the screw 4 penetrates into the lower pad 2 to a depth of not less than 7 mm.

[0027] Preferably, the dimensional parameters of the square timber 6 to be processed are encoded.

[0028] Preferably, it also includes a processing head 7, which is used to form arc-shaped edges on both sides of the square timber 6 to be processed.

[0029] The specific steps for using the device of this utility model are as follows: Implementation Step 1: Stack the lower pad 2 and the upper pad 3 together using screws 4. The purpose of the double-layer pads is to increase the thickness and prevent the nails 5 from penetrating the bottom surface of the lower pad 2 and hitting the MDF underneath when fixing the square timber 6 with nails 5. This increases the stability of the square timber base. Preferably, the thickness of each pad (lower pad 2 and upper pad 3) is 15mm. The screws 4 should be fixed at both ends of the pad, with no less than 4 screws at the ends. The screws 4 should be screwed into the pad to a depth of no less than 7mm. The pads should have a flat surface and straight sides. Holes, damage, etc. are not allowed on the surface.

[0030] Step 2: Place the assembled pad on the machine processing platform 8 and adjust its position.

[0031] Step 3: Cut the raw timber into sections according to length. Secure the raw timber (section 6) to the upper pad 3 using nails (nail 5). Nail one nail to each end of the raw timber, ensuring the nails penetrate no more than 7mm into the pad to prevent them from piercing the bottom. After securing the raw timber (section 6), mark the four corners of the raw timber (section 6) on the upper pad 3 with a marker to ensure accurate positioning for the next batch of raw timber. Immediately after securing the raw timber (section 6) to the upper pad 3, mark its surface with information such as the radius of curvature, inner circle, and outer circle (e.g., barcode, number, or QR code). This facilitates easy identification of the curved keel during curved template assembly, saving significant time.

[0032] Step 4: Place a fixed tray of square timber 6 on the machine processing platform 8 and observe whether the pad moves during the process of processing the square timber 6 into an arc shape. After the square timber 6 is processed, check whether the arc of the square timber is correct and whether the arc of each square timber 6 is consistent. Only when the quality of the processed arc square timber is qualified can this combination pad be used as the processing base for the next batch of arc square timber.

[0033] The advantages of this invention are: it is simpler and smoother to manufacture than traditional curved keel structures, and the curvature and radius of the curved keel are precisely controlled. Using timber as the curved keel allows the formwork to naturally bend into the required curved surface and remain stable, resulting in good integrity and high strength. It also reduces the likelihood of quality problems such as formwork bulging, irregular deformation of the formwork surface, and fold lines during long concrete pours, significantly improving the appearance of the curved fair-faced concrete structure. Furthermore, it incorporates digital construction technology into the formwork system, resulting in substantial improvements.

[0034] Preferably, such as Figure 3 As shown, the MDF 1 is usually fixed on the CNC machine tool (machining platform 8); there are positioning posts 11 on both sides of the CNC machine tool for placing the pad (including the lower pad 2 and the upper pad 3) on the machining platform 8, and the pad contacts the positioning posts 11 on both sides for positioning. The MDF board 1 is fixed on the processing platform 8, and the gap between the MDF board 1 and the processing platform 8 is sealed with glass glue 12 (to better provide a vacuum environment). The vacuum pump 13 is connected to a vacuum pipe that leads to the bottom of the MDF board 1 to create a vacuum. The vacuum pressure generated by the vacuum pump 13 can be evenly distributed at the bottom of the MDF board 1, better forming a uniform negative pressure at the bottom of the pad to adhere the pad. Then, the vacuum pump 13 is turned on, which creates a vacuum at the bottom of the MDF board 1, and correspondingly creates a vacuum negative pressure at the bottom of the pad, adsorbing and fixing the pad to the MDF board 1 for processing of the arc-shaped keel.

[0035] During the processing of the MDF 1, it has its own pores, or pores can be formed on the MDF 1. After the vacuum pump 13 forms a vacuum negative pressure at the bottom, a vacuum negative pressure area will be formed at the bottom of the pad above the MDF 1, which can effectively adsorb the pad above.

[0036] High-density fiberboard (MDF) is a type of compressed board made from wood fiber or other plant fibers, with a thickness of 5mm. It is a very common type of MDF on the market.

[0037] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A fixing device for processing the keel of an arc-shaped structure in fair-faced concrete, characterized in that, Includes MDF (1), lower pad (2), upper pad (3), screws (4), nails (5) and square timber to be processed (6); The lower pad (2) and the upper pad (3) are stacked on the density board (1) in sequence, and the lower pad (2) and the upper pad (3) are fixed together by screws (4); multiple square timbers (6) to be processed are fixed on the upper pad (3) by nails (5).

2. The fixing device for processing the keel of the arc-shaped structure of fair-faced concrete according to claim 1, characterized in that, The head of the nail (5) is inserted into the lower pad (2).

3. The fixing device for processing the keel of the arc-shaped structure of fair-faced concrete according to claim 1, characterized in that, The nails (5) are respectively installed at both ends of the square timber (6) to be processed.

4. The fixing device for processing the keel of the arc-shaped structure of fair-faced concrete according to claim 1, characterized in that, The depth to which the nail (5) penetrates the lower pad (2) is within 7 mm.

5. The fixing device for processing the keel of the arc-shaped structure of fair-faced concrete according to claim 1, characterized in that, The thickness of the lower pad (2) and the upper pad (3) is 15mm.

6. The fixing device for processing the keel of the arc-shaped structure of fair-faced concrete according to claim 1, characterized in that, The screws (4) are fixed on both sides of the lower pad (2).

7. The fixing device for processing the keel of the arc-shaped structure of fair-faced concrete according to claim 6, characterized in that, There are at least 4 screws on each side (4).

8. The fixing device for processing the keel of the arc-shaped structure of fair-faced concrete according to claim 1, characterized in that, The screw (4) is inserted into the lower pad (2) to a depth of not less than 7 mm.

9. The fixing device for processing the keel of the arc-shaped structure of fair-faced concrete according to claim 1, characterized in that, The dimensional parameters of the square timber (6) to be processed are encoded.

10. The fixing device for processing the keel of the arc-shaped structure of fair-faced concrete according to any one of claims 1-9, characterized in that, It also includes a processing cutter head (7) for forming arc-shaped edges on both sides of the square timber (6) to be processed.

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