Universal conical rod type prefabricated wallboard through hole forming method

Abstract

The invention discloses a universal conical rod type prefabricated wall panel through hole forming method which comprises the following steps that according to a design drawing of a prefabricated wall panel, positions needing to be perforated are marked on a mold table, accurate punching is conducted on the marked positions through a punching tool, and then tapping treatment is conducted on the hole positions so that a conical core rod can be fixed in the follow-up process; the conical core rods are sequentially inserted into the tapped hole sites in the first step, each conical core rod is fixed through a bolt, it is ensured that the conical core rods are stable and do not incline, then the side molds of the wallboard are assembled around the conical core rods, it is ensured that the four side molds are connected seamlessly and firmly, and leakage during concrete pouring is prevented; the mold turnover rate is increased, the cost is reduced, the production efficiency and the product accuracy are improved, the first-pass yield is further increased, the maintenance and replacement cost is reduced, and the environmental friendliness and the safety are improved.

Description

Technical Field

[0001] The invention relates to the field of fabricated building component preparation, and in particular to a perforation forming method for universal cone-rod type prefabricated wall panels. Background Art

[0002] In the prior art, the perforation forming of assembled prefabricated wall panels mainly adopts the following two methods:

[0003] 1. Fixture + cone bar system: In this technology, the cone bar is fixed by the side of the fixture. This setting often faces several problems: due to the limitation of the fixing method, the cone bar is prone to tilt; the non-universality of the fixture between each wall panel means that the fixture needs to be remade every time it is used, which increases the cost of the mold.

[0004] 2. Screw + PVC pipe system: This method uses a screw with a smaller diameter to pass through the PVC pipe for positioning. The problems with this design include: the screw is easy to deviate in the PVC pipe, causing the concrete to block the PVC pipe; the PVC pipe left in the concrete may cause water seepage; in addition, the PVC pipe is a consumable, which also increases the cost of using the mold.

[0005] Both of these traditional technologies have problems such as complex operation, high cost, low efficiency and difficult quality control. Cause analysis shows that these problems are mainly due to the instability of perforation positioning and fixation, as well as the dependence on equipment accuracy and durability during multiple uses. These factors work together to lead to low production efficiency and unstable component quality. Based on this, the present invention proposes a universal cone-rod prefabricated wall panel perforation forming method to solve the above problems. Summary of the invention

[0006] In order to overcome the defects in the above-mentioned prior art, the present invention provides a universal conical rod type prefabricated wall panel perforation forming method, which improves the mold turnover rate and reduces the cost through the setting of the conical core rod, improves the production efficiency and product accuracy, thereby improving the first-time qualified rate, reducing the cost of maintenance and replacement, and improving environmental friendliness and safety.

[0007] Technical Solution

[0008] A universal cone-rod prefabricated wall panel perforation forming method comprises the following steps:

[0009] Step 1: Positioning the mold base and preparing the holes: According to the design drawings of the prefabricated wall panels, mark the locations where holes need to be punched on the mold base, use a punching tool to accurately punch holes at the marked locations, and then tap these holes to facilitate subsequent fixing of the conical mandrel;

[0010] Step 2: Assemble the conical core rod and the side mold: insert the conical core rods into the holes tapped in step 1 one by one, and fix each conical core rod with bolts to ensure that it is stable and not tilted. Then assemble the side molds of the wall panel around the conical core rods to ensure that the connection between the four side molds is seamless and firm to prevent leakage during concrete pouring;

[0011] Step 3: Install the steel cage and pour concrete: Place the pre-tied steel cage in the space formed by the side mold to ensure that the steel cage is in the correct position. Use sealing materials to wrap the intersection of the steel cage and the side mold to prevent leakage during concrete pouring. After completion, pour concrete to ensure that the concrete evenly fills every corner.

[0012] Step 4: Curing, demoulding and extracting the conical core rod: After pouring the concrete, standard curing is required. After the concrete strength reaches the design requirements, demoulding is performed. The conical core rod is unscrewed from the solidified prefabricated wall panel using an electric wrench. At this time, accurate perforations are left on the prefabricated wall panel.

[0013] Step 5. Cleaning and finished product inspection: The last step is to clean the surface of the prefabricated wall panels to remove any excess concrete or impurities that may exist, and then conduct a quality inspection of the finished product, including the size, position and overall flatness of the perforations, to ensure that each prefabricated wall panel meets production standards.

[0014] Furthermore, the diameter of the precise hole punched in step one is 10.5 mm, and the hole is tapped with M12.

[0015] Furthermore, the conical mandrel comprises a thick end and a thin end, the thick end is fixedly provided with a hexagonal end, and the thin end is fixedly provided with a bolt end.

[0016] Furthermore, in step 2, the conical mandrel is screwed into and fixed in the tapped hole through the bolt end.

[0017] Furthermore, in step four, the electric wrench unscrews the bolt end of the conical mandrel from the tapped hole through the hexagonal end, and removes the conical mandrel.

[0018] Furthermore, the sealing material in step three includes but is not limited to a grout stop tape.

[0019] Beneficial Effects

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. Improve mold turnover rate and reduce costs: Due to the versatility of the conical mandrel, the mold cost is reduced by about 30-40%, and the mold turnover rate is increased by about 50%. This is because it is no longer necessary to customize a special tooling frame for each different wall panel component, reducing the time and cost of repeated production and debugging;

[0022] 2. Improve production efficiency and product accuracy: With the use of a conical mandrel, the perforation positioning time is reduced by about 60%, and due to accurate positioning and fixation, the problems of offset and tilt are almost completely eliminated, and the first-time qualified rate of products is increased to more than 98%;

[0023] 3. Reduce maintenance and replacement costs: Compared with the easily worn PVC pipe, the conical mandrel design is more durable, reducing the replacement frequency and related maintenance costs. Over a long period of use, maintenance costs are reduced by about 25-30%.

[0024] 4. Improve environmental friendliness and safety: Reduce the use of consumables such as PVC, reduce waste generation in the production process, and be more environmentally friendly. At the same time, due to the simplification of operations and reduced risks, the safety of the workplace has been improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a universal cone-rod type prefabricated wall panel perforation forming method of the present invention;

[0026] Figure 2 for Figure 1 Schematic diagram of the structure of the middle cone rod;

[0027] Reference Numbers

[0028] Formwork platform 1, side formwork 2, steel cage 3, conical core rod 4, hexagonal end 41, bolt end 42, thick end 43, thin end 44. DETAILED DESCRIPTION

[0029] In order to better illustrate the content of the present invention, the following is a detailed description with reference to the accompanying drawings and implementation examples:

[0030] have Figure 1-Figure 2 As shown, the present invention discloses a universal cone-rod type prefabricated wall panel perforation forming method, comprising the following steps:

[0031] Step 1: Positioning the mold base and preparing the holes: According to the design drawings of the prefabricated wall panels, mark the positions to be punched on the mold base 1, use a punching tool to accurately punch holes at the marked positions, and then tap these holes to facilitate the subsequent fixing of the conical mandrel 4;

[0032] Step 2: Assemble the conical core rod and the side mold: The conical core rods 4 are inserted into the holes tapped in step 1 in sequence. Each conical core rod 4 is fixed by bolts to ensure that it is stable and not tilted. Then, the side molds 2 of the wall panel are assembled around the conical core rods 4 to ensure that the connection between the four side molds 2 is seamless and firm to prevent leakage during concrete pouring.

[0033] Step 3: Install the steel cage and pour concrete: Place the pre-tied steel cage 3 in the space formed by the side mold, ensure that the steel cage 3 is in the correct position, and use the sealing material to wrap the junction of the steel cage 3 and the side mold 2 to prevent leakage during concrete pouring. After completion, pour the concrete to ensure that the concrete evenly fills every corner;

[0034] Step 4: Curing, demoulding and extracting the conical core rod: After pouring the concrete, standard curing is required. After the concrete strength reaches the design requirements, demoulding is performed. The conical core rod 4 is unscrewed from the solidified prefabricated wall panel using an electric wrench. At this time, accurate perforations are left on the prefabricated wall panel.

[0035] Step 5. Cleaning and finished product inspection: The last step is to clean the surface of the prefabricated wall panels to remove any excess concrete or impurities that may exist, and then conduct a quality inspection of the finished product, including the size, position and overall flatness of the perforations, to ensure that each prefabricated wall panel meets production standards.

[0036] Furthermore, the diameter of the precise hole punched in step 1 is 10.5 mm, and the hole is tapped with M12.

[0037] Furthermore, the conical mandrel 4 includes a thick end portion 43 and a thin end portion 44 . The thick end portion 43 is fixedly provided with a hexagonal end 41 , and the thin end portion 44 is fixedly provided with a bolt end 42 .

[0038] Furthermore, in step 2, the conical mandrel 4 is screwed into and fixed in the tapped hole through the bolt end 42 .

[0039] Furthermore, in step 4, the electric wrench unscrews the bolt end 42 of the conical mandrel 4 from the tapped hole through the hexagonal end 41, and removes the conical mandrel 4.

[0040] Furthermore, the sealing material in step three includes but is not limited to a grout stop tape.

[0041] Specifically, first, according to the design drawings of the prefabricated wall panels, mark the positions to be punched on the mold platform 1, use a special punching tool to accurately punch holes at the marked positions, and the hole diameter is 10.5mm. Then, these holes are tapped with M12 for subsequent fixing of the bolt ends 42, and the conical core rods 4 are inserted into the pre-processed holes in turn. Each conical core rod 4 is fixed by the bolt end 42 to ensure that it is stable and not tilted. After that, the side mold 2 of the wall panel is assembled around the conical core rod 4 to ensure that the connection between the four side molds 2 is seamless and firm, and then the pre-tied steel cage 3 is placed to ensure that the steel bars are in the correct position, and the grout-stopping tape is used to wrap the steel bars and the side molds. 2 The joint part is to prevent leakage during concrete pouring. After completion, concrete pouring is carried out to ensure that the concrete evenly fills every corner. Standard curing is required after concrete pouring. After the concrete strength reaches the design requirements, demoulding operation is carried out. Use an electric wrench to unscrew the bolt end 42 of the conical core rod 4 from the solidified prefabricated wall panel, and take out the conical core rod 4. At this time, accurate perforations are left on the prefabricated wall panel. The last step is to clean the surface of the prefabricated wall panel to remove any excess concrete or impurities that may exist, and then conduct quality inspection of the finished product, including the size, position and overall flatness of the perforations, to ensure that each prefabricated wall panel meets the production standards.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the technical solutions of the present invention have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A universal cone-rod type prefabricated wall panel perforation forming method, characterized in that: The steps include: Step 1: Positioning the mold base and preparing the holes: According to the design drawings of the prefabricated wall panels, mark the locations where holes need to be punched on the mold base (1), use a punching tool to accurately punch holes at the marked locations, and then tap these holes to facilitate subsequent fixing of the conical mandrel (4); Step 2: Assemble the conical core rod and the side mold: The conical core rods (4) are inserted into the holes tapped in step 1 in sequence, and each conical core rod (4) is fixed by bolts to ensure that it is stable and does not tilt. Then, the side molds (2) of the wall panel are assembled around the conical core rods (4) to ensure that the connection between the four side molds (2) is seamless and firm to prevent leakage during concrete pouring; Step 3: Install the steel cage and pour concrete: Place the pre-tied steel cage (3) in the space formed by the side mold, ensure that the steel cage (3) is in the correct position, and use sealing materials to wrap the junction of the steel cage (3) and the side mold (2) to prevent leakage during concrete pouring. After completion, pour concrete to ensure that the concrete evenly fills every corner; Step 4: Curing, demoulding and extracting the conical core rod: After pouring the concrete, standard curing is required. After the concrete strength reaches the design requirements, demoulding is performed. The conical core rod (4) is unscrewed from the solidified prefabricated wall panel using an electric wrench. At this time, accurate perforations are left on the prefabricated wall panel. Step 5. Cleaning and finished product inspection: The last step is to clean the surface of the prefabricated wall panels to remove any excess concrete or impurities that may exist, and then conduct a quality inspection of the finished product, including the size, position and overall flatness of the perforations, to ensure that each prefabricated wall panel meets production standards.

2. A universal cone-rod type prefabricated wall panel perforation forming method according to claim 1, characterized in that: The diameter of the precise hole punched in step 1 is 10.5 mm, and the hole is tapped with M12.

3. A universal cone-rod type prefabricated wall panel perforation forming method according to claim 2, characterized in that: The conical mandrel (4) comprises a thick end (43) and a thin end (44); a hexagonal end (41) is fixedly arranged on the thick end (43), and a bolt end (42) is fixedly arranged on the thin end (44).

4. A universal cone-rod type prefabricated wall panel perforation forming method according to claim 3, characterized in that: In step 2, the conical mandrel (4) is screwed into and fixed in the tapped hole through the bolt end (42).

5. A universal cone-rod type prefabricated wall panel perforation forming method according to claim 4, characterized in that: In step 4, the electric wrench unscrews the bolt end (42) of the conical mandrel (4) from the tapped hole through the hexagonal end (41), and removes the conical mandrel (4).

6. A universal cone-rod type prefabricated wall panel perforation forming method according to claim 5, characterized in that: The sealing material in step three includes but is not limited to a grout stop tape.

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