Multi-point bending arc steel die and manufacturing process thereof
Through the design and manufacturing process of multi-point bending arc steel molds, the plastic deformation and unclear edges and corners of the formed steel plate during steel mold release are solved, and the clear edges and corners of concrete components and the reduction of manufacturing costs are achieved, ensuring that Flatness of steel plate.
Patent Information
- Application Number
- CN202411271288.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-01-14
AI Technical Summary
During the release process of existing steel molds, the formed steel plates are prone to plastic deformation, resulting in unclear edges and corners of concrete components and high manufacturing costs. Multiple molds are required to cooperate to ensure the flatness of the curved structure.
Multi-point bending arc steel mold is used to superimpose the load dispersed plate and auxiliary mold release plate to disperse the load during mold release, making it more uniform in force, reducing plastic deformation, and first through CNC laser cutting and bending machine Open the pretreatment groove and bend it to form a small angle of arc angle.
It effectively avoids plastic deformation of the molded steel plate, ensures that the corners and edges of the concrete members are clear, reduces manufacturing costs, and removes bending marks through grinding and polishing to maintain the flatness of the steel plate.
Smart Images
Figure CN119304991A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of steel moulds, and more specifically to a multi-point bending arc steel mould and a manufacturing process thereof. Background Art
[0002] Concrete components have the advantages of light weight, less cracking, easy construction and good earthquake resistance. These advantages have led to more and more buildings adopting concrete structures, thereby improving the safety and stability of buildings. Concrete components are usually cast in molds to improve the accuracy and production efficiency of concrete components. Steel molds are a common molding mold for concrete casting.
[0003] Steel molds often have not only flat structures, but also curved structures. Existing steel molds have the following problems in the production and manufacturing process: 1. After casting, there is a certain bonding force between the concrete component and the forming steel plate and baffle of the steel mold. The existing demoulding method is to knock the auxiliary demoulding plate at the edge of the forming steel plate to drive the steel mold as a whole to vibrate, so that the concrete component is separated from the forming steel plate and baffle of the steel mold. However, in order to save manufacturing costs, the forming steel plate and the auxiliary demoulding plate of the steel mold are usually designed to be relatively thin steel plates (thickness of about 2mm). After knocking the auxiliary demoulding plate many times, the auxiliary demoulding plate will produce a certain amount of plastic deformation. When the plastic deformation of the auxiliary demoulding plate is formed at the connection between the auxiliary demoulding plate and the forming steel plate, the forming steel plate will also produce plastic deformation, affecting the accuracy of the concrete component; 2. The steel plates of steel molds are often bent directly at the corners by a bending machine, while some concrete components require sharp edges and corners. The steel plates directly bent by a bending machine will form arc angles at the corners, and the arc angles will increase with the increase of the thickness of the steel plates. The cast concrete components will form obvious arc angles at the corners, which does not meet the design requirements; 3. The steel plates formed by steel molds often have a variety of curved surface structures. In order to ensure the flatness of the arc surface of the formed steel plate, a variety of curved surface structures are usually formed by pressing and bending. This method requires the use of multiple molds, which increases the manufacturing cost. Summary of the invention
[0004] The purpose of the present invention is to overcome the defects in the prior art and provide a multi-point bending arc steel mold and a manufacturing process thereof, in which a formed steel plate is not easily plastically deformed during demoulding.
[0005] To achieve the above object, the technical solution of the present invention is to provide a multi-point bending arc steel mold, comprising: A forming assembly, comprising a forming steel plate and baffles arranged at the openings at both ends of the forming steel plate, wherein the forming steel plate is formed by transitionally connecting a plane and an arc surface, and the baffles are used to block the openings at both ends of the forming steel plate; An auxiliary demoulding plate, connected to the forming steel plate, for assisting in demoulding the cast concrete component from the multi-point bending arc steel mold; A load distribution plate is connected to the bottom surface or the top surface of the auxiliary stripping plate, and the load distribution plate is in contact with the auxiliary stripping plate, and the position where the load distribution plate and the auxiliary stripping plate are in contact is the position to be knocked during demoulding; The supporting assembly is connected to the forming assembly and is used to support the forming assembly, the auxiliary stripping plate and the load distributing plate.
[0006] By using the multi-point bending arc steel mold described in the present invention, through the superposition and compounding of the load distribution plate and the auxiliary stripping plate, the load generated by knocking during demoulding can be dispersed to a larger area of the auxiliary stripping plate and the load distribution plate, so that the load distribution plate and the auxiliary stripping plate are subjected to more uniform force, the pressure per unit area is smaller, and the local pressure is not easy to exceed the yield strength of the load distribution plate and the auxiliary stripping plate, so that the load distribution plate and the auxiliary stripping plate are not easy to plastically deform, and the deformation of the load distribution plate and the auxiliary stripping plate will restrict each other, further reducing the possibility of plastic deformation of the load distribution plate and the auxiliary stripping plate, and will not cause plastic deformation of the formed steel plate; and by arranging the load distribution plate, the overall stiffness of the auxiliary stripping plate and the load distribution plate is increased, and the deformation resistance of the auxiliary stripping plate and the load distribution plate will be enhanced, so it is less likely to plastically deform, and will not cause plastic deformation of the formed steel plate.
[0007] Preferably, the load dispersing plate is connected to the bottom surface of the auxiliary stripping plate, and the load dispersing plate is connected to the supporting assembly. Such a design can accelerate the dissipation of energy caused by the knocking, further reduce the possibility of plastic deformation of the auxiliary stripping plate, and further reduce the possibility of plastic deformation of the formed steel plate.
[0008] Preferably, the auxiliary stripping plate is obtained by bending the edge of the forming steel plate, and the forming steel plate and the auxiliary stripping plate form a first assembly. Such a design is conducive to improving the production efficiency of the multi-point bending arc steel mold.
[0009] Preferably, the bottom end of the load distributing plate has a horizontally arranged support plate. Such a design can facilitate the transportation of the multi-point bending circular arc steel mold and improve the safety of the transportation process of the multi-point bending circular arc steel mold.
[0010] Preferably, the support assembly includes at least two parallel square tubes, a plurality of support plates connected to the top of the square tubes, the top end surface of the support plate is in contact with the back of the formed steel plate and the bottom surface of the load distribution plate, the support plates are distributed in a linear array along the length direction of the square tube, and the support plates at both ends are connected to the baffles by bolts and nuts. Such a design can provide stable and effective support for the formed steel plate and is conducive to the disassembly, assembly and replacement of the baffles.
[0011] The manufacturing process of the multi-point bending arc steel mold is characterized by comprising the following steps: S1: According to the design requirements, a first semi-finished product including a first assembly, a baffle, a load distribution plate, a square tube and a support plate is cut out from a flat steel plate using a CNC laser cutting machine; S2: according to the design requirements, a pre-treatment tank is provided at the corner position of the first semi-finished product of the baffle and the corner position and arc position of the first semi-finished product of the first assembly; S3: using a CNC bending machine to bend the first semi-finished product of the first assembly, the baffle, the load distribution plate, the square tube and the support plate at the corner position to obtain the finished product of the baffle, the load distribution plate and the support plate, and the second semi-finished product of the first assembly and the square tube; S4: using a CNC bending machine to perform multi-point bending on the arc position of the second semi-finished product of the first assembly to form an arc portion of the formed steel plate, thereby obtaining a finished product of the first assembly; S5: welding the joint of the second semi-finished product of the square tube to obtain a finished square tube; S6: Assemble the first assembly, the baffle, the load distribution plate, the square tube and the support plate by welding and connecting with bolts and nuts to form a multi-point bending arc steel mold; S7: Use sandpaper to grind the front side of the formed steel plate to remove the bending marks formed on the front side of the formed steel plate during the multi-point bending process and the heat affected marks formed on the front side of the formed steel plate during the welding process; S8: Use a polishing machine to polish the front side of the formed steel plate to remove the scratches formed during the grinding process.
[0012] By using the manufacturing process of the multi-point bending arc steel mold described in the present invention, the formed steel plate is formed by first opening a pretreatment groove and then bending. The arc angle formed at the corner of the formed steel plate is very small, and the cast concrete component has clear edges and corners, which solves the problem that the cast concrete component forms obvious arc angles at the corners and does not meet the design requirements; the arc position of the formed steel plate is formed by multi-point bending, and does not require the coordination of multiple molds, thereby reducing the manufacturing cost, and subsequent grinding and polishing can remove the bending marks formed on the front side of the formed steel plate due to multi-point bending, and will not affect the flatness of the front side of the formed steel plate.
[0013] Preferably, when the first semi-finished product of the load distribution plate, the square tube and the support plate is cut out in S1, a pre-treatment groove is cut out at the corner position of the three. Such a design is conducive to improving the bending accuracy and bending efficiency.
[0014] Preferably, when the first semi-finished product of the support plate is cut out in S1, holes are cut in the baffle plate and two of the support plates, and the holes cut in the baffle plate and the support plates correspond to each other and cooperate with the bolts. Such a design can improve the accuracy of baffle assembly.
[0015] Preferably, when the pretreatment grooves are provided for the first assembly and the baffle in S2, the pretreatment grooves are provided on the non-casting surfaces of the first assembly and the baffle, and the pretreatment grooves include V-shaped grooves and slit grooves. With such a design, the joint seams formed after bending are located on the non-casting surfaces of the first assembly and the baffle, which is conducive to improving the quality of the cast concrete components.
[0016] Preferably, S6 comprises the following steps: S61: placing a plurality of square tubes in parallel, and welding a support plate to the top of the square tube, and positioning two support plates with holes cut at both ends of the square tube to form a support assembly; S62: welding the load distributing plate to the bottom surface of the auxiliary stripping plate of the first assembly to form a second assembly; S63: welding the second assembly to the support assembly, wherein the formed steel plate and the load distribution plate are both welded to the top end surface of the support plate; S64: Install the baffle on the support plates at both ends with bolts and nuts.
[0017] Such a design can facilitate the rapid assembly of the multi-point bending arc steel mold, and the structures will not interfere with each other during welding and installation through bolts and nuts.
[0018] The beneficial effects of the present invention are: 1. By using the multi-point bending arc steel mold described in the present invention, through the superposition and compounding of the load distribution plate and the auxiliary stripping plate, the load generated by knocking during demoulding can be dispersed to a larger area of the auxiliary stripping plate and the load distribution plate, so that the load distribution plate and the auxiliary stripping plate are subjected to more uniform force, the pressure per unit area is smaller, and the local pressure is not easy to exceed the yield strength of the load distribution plate and the auxiliary stripping plate, and the load distribution plate and the auxiliary stripping plate are not easy to plastically deform, and the deformation of the load distribution plate and the auxiliary stripping plate will limit each other, further reducing the possibility of plastic deformation of the load distribution plate and the auxiliary stripping plate, and will not cause plastic deformation of the formed steel plate; and by setting the load distribution plate, the overall stiffness of the auxiliary stripping plate and the load distribution plate is increased, and the deformation resistance of the auxiliary stripping plate and the load distribution plate will be enhanced, and it is less likely to plastically deform, and will not cause plastic deformation of the formed steel plate; 2. By using the manufacturing process of the multi-point bending arc steel mold of the present invention, the formed steel plate is formed by first opening a pretreatment groove and then bending. The arc angle formed at the corner of the formed steel plate is very small, and the cast concrete component has sharp edges and corners, which solves the problem that the cast concrete component forms obvious arc angles at the corners and does not meet the design requirements; 3. The arc position of the formed steel plate is formed by multi-point bending, which does not require the coordination of multiple molds, reducing the manufacturing cost. The subsequent grinding and polishing can remove the bending marks formed on the front of the formed steel plate due to multi-point bending, and will not affect the flatness of the front of the formed steel plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the overall structure of a multi-point bending arc steel mold; Figure 2 It is a side view cross-sectional schematic diagram of a multi-point bending arc steel die; Figure 3 Schematic diagram of the three-dimensional structure of the baffle; Figure 4 is a schematic diagram of the three-dimensional structure of the first assembly; Figure 5 is a schematic diagram of the three-dimensional structure of the second assembly; Figure 6 It is a three-dimensional structural schematic diagram of the support assembly; Figure 7 is a schematic diagram of the bending principle of implementation method ① in Example 10; Figure 8 is a schematic diagram of the bending principle of implementation method ② in Example 10; Fig. 9 is a schematic diagram of the bending principle of implementation method ③ in Example 10; Fig.10 It is a schematic diagram of the bending principle of implementation mode ④ in Example 10; Fig.11 It is a schematic diagram of the bending principle of implementation mode ⑤ in Example 10; Fig.12 It is a schematic diagram of the bending principle of implementation mode ⑥ in Example 10; Fig.13 is a partial side cross-sectional schematic diagram of the first assembly after the pretreatment tank is opened in Example 10; Fig.14 It is a partial side cross-sectional schematic diagram of the first assembly after bending in Example 10.
[0020] In the figure: 100, forming assembly; 110, forming steel plate; 111, V-shaped groove; 112, slit groove; 113, joint seam; 114, expansion notch; 120, baffle; 130, reinforcement plate; 200, auxiliary stripping plate; 300, load distribution plate; 310, support plate; 400, support assembly; 410, square tube; 420, support plate; 421, reinforcement rib; 500, first assembly; 510, non-casting surface; 520, casting surface; 530, first corner; 540, second corner; 550, third corner; 560, first arc; 570, fourth corner; 580, fifth corner; 590, second arc; 600, second assembly. DETAILED DESCRIPTION
[0021] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is to enable those skilled in the art to better understand and implement the subject matter described herein. The functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the present specification. Various examples may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.
[0022] In order to better understand the present invention, Figure 1-Figure 14 The multi-point bending arc steel mold and its manufacturing process of the present invention are described in detail.
[0023] Embodiment 1: like Figure 1-Figure 3 As shown, the multi-point bending arc steel mold includes: The forming assembly 100 includes a forming steel plate 110 and baffles 120 disposed at the openings at both ends of the forming steel plate 110. The forming steel plate 110 is formed by transitionally connecting a plane and an arc surface. The baffles 120 are used to block the openings at both ends of the forming steel plate 110. The auxiliary stripping plate 200 is connected to the forming steel plate 110 and is used to assist in the stripping of the cast concrete component from the multi-point bending arc steel mold; The load distributing plate 300 is connected to the bottom surface or the top surface of the auxiliary stripping plate 200, and the load distributing plate 300 is in contact with the auxiliary stripping plate 200, and the position where the load distributing plate 300 and the auxiliary stripping plate 200 are in contact is the position to be knocked during demoulding; The supporting assembly 400 is connected to the forming assembly 100 and is used to support the forming assembly 100 , the auxiliary stripping plate 200 and the load distributing plate 300 .
[0024] It should be noted that when the load distributing plate 300 is connected to the bottom surface of the auxiliary stripping plate 200, the supporting assembly 400 is connected to the load distributing plate 300, directly supporting the load distributing plate 300 and indirectly supporting the auxiliary stripping plate 200. When the auxiliary stripping plate 200 on the upper layer is struck, the load distributing plate 300 on the lower layer will transfer and distribute the load, so that the load generated by the strike is distributed to a larger area on the auxiliary stripping plate 200 and the load distributing plate 300, so that the load distributing plate 300 and the auxiliary stripping plate 200 are The auxiliary stripping plate 200 is subjected to a more uniform force, and the pressure per unit area is smaller. The local pressure is not likely to exceed the yield strength of the load distributing plate 300 and the auxiliary stripping plate 200, and the load distributing plate 300 and the auxiliary stripping plate 200 are not likely to be plastically deformed. Moreover, the deformation of the load distributing plate 300 and the auxiliary stripping plate 200 will restrict each other, further reducing the possibility of plastic deformation of the load distributing plate 300 and the auxiliary stripping plate 200, and thus will not cause plastic deformation of the formed steel plate 110. When the load distributing plate 300 is connected to the top surface of the auxiliary stripping plate 200, the supporting assembly 400 is connected to the auxiliary stripping plate 200, directly supporting the auxiliary stripping plate 200, and indirectly supporting the load distributing plate 300. When the load distributing plate 300 on the upper layer is struck, the auxiliary stripping plate 200 on the lower layer will transfer and distribute the load, which will produce the same effect as the above content, and will not be repeated here. In this embodiment, the top end surface of the baffle plate 120 is flush with the top end surface of the formed steel plate 110. In order to enhance the rigidity of the auxiliary stripping plate 200 and improve the deformation resistance of the auxiliary stripping plate 200, the cross-section of the auxiliary stripping plate 200 is L-shaped. In order to enhance the rigidity of the baffle plate 120 and improve the deformation resistance of the baffle plate 120, the cross-section of the baffle plate 120 is U-shaped. When the load distribution plate 300 is connected to the bottom surface of the auxiliary stripping plate 200, the top surface of the auxiliary stripping plate 200 is knocked to assist in demolding. When the load distribution plate 300 is connected to the top surface of the auxiliary stripping plate 200, the top surface of the load distribution plate 300 is knocked to assist in demolding.
[0025] By using the multi-point bending arc steel mold of the present invention, through the superposition and compounding of the load distributing plate 300 and the auxiliary stripping plate 200, the load generated by knocking during demoulding can be dispersed to a larger area of the auxiliary stripping plate 200 and the load distributing plate 300, so that the load distributing plate 300 and the auxiliary stripping plate 200 are subjected to more uniform force, the pressure per unit area is smaller, the local pressure is not easy to exceed the yield strength of the load distributing plate 300 and the auxiliary stripping plate 200, and the load distributing plate 300 and the auxiliary stripping plate 200 are not easy to plastically deform. shape, and the deformation of the load distribution plate 300 and the auxiliary stripping plate 200 will restrict each other, further reducing the possibility of plastic deformation of the load distribution plate 300 and the auxiliary stripping plate 200, and will not cause plastic deformation of the formed steel plate 110; and by setting the load distribution plate 300, the overall rigidity of the auxiliary stripping plate 200 and the load distribution plate 300 is increased, and the deformation resistance of the auxiliary stripping plate 200 and the load distribution plate 300 will be enhanced, which is less likely to cause plastic deformation, and will not cause plastic deformation of the formed steel plate 110.
[0026] Embodiment 2: As a further optimization of Example 1, Figure 1 and Figure 2 As shown, the load distribution plate 300 is connected to the bottom surface of the auxiliary stripping plate 200 , and the load distribution plate 300 is connected to the supporting assembly 400 .
[0027] It should be noted that the formed steel plate 110 provides fixed support for the auxiliary stripping plate 200, and the support assembly 400 provides fixed support for the load dispersing plate 300. When the auxiliary stripping plate 200 is struck, the auxiliary stripping plate 200 dissipates the energy brought by the strike by its own vibration, and transfers the energy to the load dispersing plate 300 and the formed steel plate 110. The vibration of the auxiliary stripping plate 200 is limited by the formed steel plate 110 and the load dispersing plate 300, so the damping effect is stronger, the vibration energy is dissipated faster, and the vibration amplitude decreases rapidly. The stress cycle borne by the auxiliary stripping plate 200 is short, the stress peak is low, and plastic deformation is not easy to occur. The load dispersing plate 300 dissipates the energy transmitted by the auxiliary stripping plate 200 through its own vibration, and transmits the energy to the supporting assembly 400 and the auxiliary stripping plate 200. The vibration of the load dispersing plate 300 is limited by the supporting assembly 400 and the auxiliary stripping plate 200, so the damping effect is stronger, the vibration energy is dissipated faster, and the vibration amplitude decreases rapidly. The stress cycle borne by the load dispersing plate 300 is short, the stress peak is low, and plastic deformation is not easy to occur. Due to the supporting and fixing effect of the forming steel plate 110 on the auxiliary stripping plate 200, and the supporting and fixing effect of the supporting assembly 400 on the load dispersing plate 300, during the vibration of the auxiliary stripping plate 200 and the load dispersing plate 300, friction will also be generated between the auxiliary stripping plate 200 and the load dispersing plate 300, converting the vibration energy into heat energy, thereby accelerating the dissipation of the vibration energy; If the load distribution plate 300 is connected to the top surface of the auxiliary stripping plate 200, the load distribution plate 300 is only connected to the auxiliary stripping plate 200. After the load distribution plate 300 is struck, the load distribution plate 300 will vibrate together with the auxiliary stripping plate 200. The vibration of the load distribution plate 300 will only be limited by the auxiliary stripping plate 200. The damping effect is relatively weak, the vibration energy is dissipated relatively slowly, and the vibration amplitude is relatively large. The stress cycle borne by the load distribution plate 300 and the auxiliary stripping plate 200 is relatively long, and the stress peak is relatively high. The load distribution plate 300 and the auxiliary stripping plate 200 are relatively more likely to undergo plastic deformation, which is also more likely to cause plastic deformation of the formed steel plate 110.
[0028] In this embodiment, the load distribution plate 300 is welded to the auxiliary stripping plate 200 and the support assembly 400. When the load distribution plate 300 and the auxiliary stripping plate 200 vibrate, internal material friction is generated at the welding point between the load distribution plate 300 and the auxiliary stripping plate 200, converting the vibration energy into heat energy, further accelerating the dissipation of the vibration energy.
[0029] Embodiment 3: As a further optimization of Example 2, Figure 4 As shown, the auxiliary stripping plate 200 is obtained by bending the edge of the formed steel plate 110 , and the formed steel plate 110 and the auxiliary stripping plate 200 form a first assembly 500 .
[0030] It should be noted that if the forming steel plate 110 and the auxiliary stripping plate 200 are processed separately, the auxiliary stripping plate 200 needs to be welded to the forming steel plate 110 during installation. Since the forming steel plate 110 is relatively thin, heat-affected marks will be formed on the front of the forming steel plate 110 after welding, resulting in an uneven front of the forming steel plate 110, which will affect the accuracy of the forming steel plate 110. It needs to be polished and polished later to avoid affecting the quality of the cast concrete component, which takes more time. However, the auxiliary stripping plate 200 is formed by bending the forming steel plate 110 at the edge, which will not affect the flatness of the front of the forming steel plate 110, thereby improving the accuracy of the forming steel plate 110. Moreover, bending is more convenient and quicker than welding, and there is no need to polish and polish the connection between the forming steel plate 110 and the auxiliary stripping plate 200, which greatly improves the production efficiency of the multi-point bending arc steel mold. The front side of the formed steel plate 110 , that is, the surface of the formed steel plate 110 that is in direct contact with concrete when pouring concrete, is, in this embodiment, the upper surface of the formed steel plate 110 .
[0031] Embodiment 4: As an optimization of Example 3, Figure 2 and Figure 5 As shown, the bottom end of the load distribution plate 300 has a support plate 310 disposed horizontally.
[0032] It should be noted that since the cross-section of the auxiliary stripping plate 200 is L-shaped, generally, when carrying the multi-point bending arc steel mold, it is necessary to lift the vertical side of the auxiliary stripping plate 200 by hand, and the multi-point bending arc steel mold is heavy. If the multi-point bending arc steel mold is carried directly, it is easy to cut the fingers. By setting up a pallet 310, the multi-point bending arc steel mold can be carried by lifting the pallet 310 by hand. Since the pallet 310 is horizontal, the contact area between the pallet 310 and the hand is large, and it is not easy to cut the fingers.
[0033] Embodiment 5: As an optimization of Example 4, Figure 1 , Figure 2 and Figure 6 As shown, the support assembly 400 includes at least two parallel square tubes 410, and a plurality of support plates 420 connected to the top of the square tubes 410. The top end surface of the support plate 420 is in contact with the back surface of the formed steel plate 110 and the bottom surface of the load distribution plate 300. The support plates 420 are distributed in a linear array along the length direction of the square tubes 410. The support plates 420 at both ends are connected to the baffle 120 by bolts and nuts.
[0034] It should be noted that the back side of the formed steel plate 110 is opposite to the front side of the formed steel plate 110 . In the present embodiment, the back side of the formed steel plate 110 is the lower surface of the formed steel plate 110 .
[0035] By setting up multiple support plates 420 distributed in a linear array, stable and effective support can be provided for the formed steel plate 110 to prevent the formed steel plate 110 from undergoing obvious flexural deformation, and the baffle 120 is installed on the support plates 420 at both ends by bolts and nuts, which is convenient for disassembly, assembly and replacement of the baffle 120.
[0036] In this embodiment, the support plate 420 is provided with reinforcing ribs 421, which improve the rigidity of the support plate 420 and ensure that the support plate 420 itself is not easily bent or deformed during the process of providing long-term and stable support for the formed steel plate 110, thereby improving the service life of the multi-point bending arc steel mold.
[0037] Embodiment 6: The manufacturing process of the multi-point bending arc steel mold includes the following steps: S1: According to the design requirements, a first semi-finished product of the first assembly 500, the baffle 120, the load distribution plate 300, the square tube 410 and the support plate 420 is cut out from the flat steel plate using a CNC laser cutting machine; S2: according to the design requirements, a pre-treatment tank is provided at the corner position of the first semi-finished product of the baffle 120 and the corner position and arc position of the first semi-finished product of the first assembly 500; S3: using a CNC bending machine to bend the first semi-finished product of the first assembly 500, the baffle 120, the load distribution plate 300, the square tube 410 and the support plate 420 at the corner position to obtain the finished product of the baffle 120, the load distribution plate 300 and the support plate 420, and the second semi-finished product of the first assembly 500 and the square tube 410; S4: using a CNC bending machine to perform multi-point bending on the arc position of the second semi-finished product of the first assembly 500 to form an arc portion of the formed steel plate 110, thereby obtaining a finished product of the first assembly 500; S5: welding the joint of the second semi-finished product of the square tube 410 to obtain a finished product of the square tube 410; S6: Assemble the first assembly 500, the baffle 120, the load distribution plate 300, the square tube 410 and the support plate 420 by welding and bolt and nut connection to form a multi-point bending arc steel mold; S7: grinding the front side of the formed steel plate 110 with sandpaper to remove bending marks formed on the front side of the formed steel plate 110 during the multi-point bending process and heat-affected marks formed on the front side of the formed steel plate 110 during the welding process; S8: polishing the front side of the formed steel plate 110 using a polishing machine to remove scratches formed during the grinding process.
[0038] It should be noted that in S2, a CNC laser cutting machine or a CNC slotting machine can be used to open a pretreatment groove. The groove cut by the CNC laser cutting machine is a slit groove 112, and the groove planed by the CNC slotting machine is a V-shaped groove 111; in S3, the first semi-finished product of the first assembly 500 forms an auxiliary stripping template 200 at its edge during the bending process, and the middle part of the first assembly 500 is a formed steel plate 110.
[0039] By using the manufacturing process of the multi-point bending arc steel mold of the present invention, the formed steel plate 110 is formed by first opening a pretreatment groove and then bending. The arc angle formed at the corner of the formed steel plate 110 is very small, and the cast concrete component has clear edges and corners, which solves the problem that the cast concrete component forms obvious arc angles at the corners and does not meet the design requirements; the arc position of the formed steel plate 110 is formed by multi-point bending, and does not require the coordination of multiple molds, thereby reducing the manufacturing cost, and subsequent grinding and polishing can remove the bending marks formed on the front side of the formed steel plate 110 due to multi-point bending, and will not affect the flatness of the front side of the formed steel plate 110.
[0040] Embodiment 7: As a further optimization of Example 6, when cutting out the first semi-finished product of the load distribution plate 300, the square tube 410 and the support plate 420 in S1, a pretreatment groove is cut out at the corner position of the three.
[0041] It should be noted that the pre-treatment groove cut on the first semi-finished product of the load distribution plate 300, the square tube 410 and the support plate 420 by using a CNC laser cutting machine is a slit groove 112. If the slit groove 112 is not cut, after cutting the first semi-finished product of the load distribution plate 300, the square tube 410 and the support plate 420, it is necessary to manually measure and draw the bending line to facilitate alignment and bending. The manual measurement has a large error, the accuracy after bending is low, and it is time-consuming and labor-intensive. The slit groove 112 is cut by a CNC laser cutting machine, the position accuracy of the slit groove 112 is high, and during the bending process, the cut slit groove 112 has a certain guiding effect on the bending, which further improves the bending accuracy, and does not require manual measurement and marking, thereby improving the efficiency of the bending process.
[0042] Embodiment 8: As a further optimization of Example 7, when cutting out the first semi-finished product of the support plate 420 in S1, holes are cut in the baffle plate 120 and two of the support plates 420, and the positions of the holes cut in the baffle plate 120 and the support plate 420 correspond to each other and cooperate with the bolts.
[0043] It should be noted that the positioning cutting and hole cutting are performed by a CNC laser cutting machine, the hole positioning accuracy is high, the assembly accuracy of the baffle 120 during assembly is also high, and the laser hole cutting speed is fast, and there is no need to reposition the holes, thereby improving the production efficiency of the multi-point bending arc steel mold.
[0044] Embodiment 9: As a further optimization of Example 8, when a pretreatment groove is opened in the first assembly 500 and the baffle 120 in S2, the pretreatment groove is opened on the non-casting surface 510 of the first assembly 500 and the baffle 120, and the pretreatment groove includes a V-shaped groove 111 and a slit groove 112.
[0045] It should be noted that the non-casting surface 510 of the baffle 120, i.e., the surface of the baffle 120 away from the formed steel plate 110, the casting surface 520 of the baffle 120, i.e., the surface of the baffle 120 close to the formed steel plate 110, the non-casting surface 510 of the first assembly 500, i.e., the back side of the formed steel plate 110, the casting surface 520 of the first assembly 500, i.e., the front side of the formed steel plate 110, the first assembly 500 and the baffle 120 are bent at the pre-treatment groove, and after bending, a joint seam 110 is formed at the pre-treatment groove. 3 or the extended slot 114, if the pre-treatment groove is opened on the casting surface 520 of the first assembly 500 and the baffle 120, the joint 113 or the extended slot 114 will be formed on the casting surface 520 of the first assembly 500 and the baffle 120, that is, the joint 113 or the extended slot 114 will be formed on the surface of the molding component 100 that is in direct contact with the concrete, and the cast concrete component will form a strip mark at the position of the joint 113 or the extended slot 114, which affects the aesthetic effect of the concrete component.
[0046] Embodiment 10: As a further optimization of Example 9, when cutting out the first semi-finished product of the first assembly 500 in S1, a slit groove 112 is cut at least a part of the corner position and the arc position of the first assembly 500, the depth of the slit groove 112 cut by the CNC laser cutting machine increases with the increase of the bending angle, the size of the V-shaped groove 111 planed by the CNC slotting machine (including the angle and depth of the V-shaped groove 111) increases with the increase of the bending angle, and the slit groove 112 cut by the CNC laser cutting machine and the V-shaped groove 111 planed by the CNC slotting machine are both located on the non-casting surface 510 of the first assembly 500, and the slit groove 112 cut by the CNC laser cutting machine or the V-shaped groove 111 planed by the CNC slotting machine are selected in accordance with the following implementation methods: ① Such as Figure 7 As shown, the first assembly 500 is bent in a direction away from the casting surface 520, and when the bending angle is less than 90°, a V-shaped groove 111 is planed at the corner position of the non-casting surface 510 of the first assembly 500, and a joint seam 113 is formed on the non-casting surface 510 of the first assembly 500 after bending; ② If Figure 8As shown, the first assembly 500 is bent in a direction away from the casting surface 520, and when the bending angle is greater than or equal to 90°, a V-shaped groove 111 is planed at the corner position of the non-casting surface 510 of the first assembly 500, and shallow V-shaped grooves 111 are planed on both sides of the V-shaped groove 111 at the corner position. After bending, a joint seam 113 is formed on the non-casting surface 510 of the first assembly 500. Since the bending angle is large, the V-shaped groove 111 at the corner position is deep, resulting in low strength of the first assembly 500 at the corner position. After long-term use, the first assembly 500 is prone to cracking at the corner position. The reinforcing plate 130 is bonded to the corner position of the non-casting surface 510 of the first assembly 500. The shallow V-shaped groove 111 filled with adhesive glue can improve the bonding strength between the first assembly 500 and the reinforcing plate 130. ③ Such as Fig. 9 As shown, multiple arc bending is performed in a direction away from the casting surface 520 of the first assembly 500, and multiple evenly distributed shallow small V-shaped grooves 111 are planed at the arc position of the non-casting surface 510 of the first assembly 500. After the multiple arc bending, the non-casting surface 510 of the first assembly 500 forms a joint seam 113; ④ Such as Fig.10 As shown, the first assembly 500 is bent toward the casting surface 520, and when the bending angle is less than 90°, a slit groove 112 is cut at the corner position of the non-casting surface 510 of the first assembly 500, and after bending, the opening of the slit groove 112 of the non-casting surface 510 of the first assembly 500 is enlarged to form an extended notch 114; ⑤ Such as Fig.11 As shown, the first assembly 500 is bent in a direction close to the casting surface 520, and when the bending angle is greater than or equal to 90°, a slit groove 112 is cut at the corner position of the non-casting surface 510 of the first assembly 500, and shallow V-shaped grooves 111 are planed on both sides of the slit groove 112 at the corner position. After bending, the opening of the slit groove 112 of the non-casting surface 510 of the first assembly 500 is enlarged to form an extended notch 114. Due to the large bending angle, the slit groove 112 at the corner position is deep, resulting in low strength of the first assembly 500 at the corner position. After long-term use, the first assembly 500 is prone to cracking at the corner position. The reinforcing plate 130 is bonded to the corner position of the non-casting surface 510 of the first assembly 500. The adhesive glue fills the extended notch 114 and the shallow V-shaped groove 111 to improve the bonding strength between the first assembly 500 and the reinforcing plate 130. ⑥ Such as Fig.12As shown, multiple arc bending is performed in the direction close to the casting surface 520 of the first assembly 500, and multiple evenly distributed shallow and small slit grooves 112 are cut at the arc position of the non-casting surface 510 of the first assembly 500. After the multiple arc bending, the opening of the slit groove 112 on the non-casting surface 510 of the first assembly 500 is enlarged to form an extended groove 114.
[0047] It should be noted that all the embodiments in the above ①-⑥ can be processed and implemented on a first assembly 500. According to the different bending directions, V-grooves 111 are planed or slit grooves 112 are cut on the back of the first assembly 500. This can reduce the obstruction of the non-casting surface 510 of the first assembly 500 to the bending process and improve the bending accuracy, thereby improving the dimensional accuracy of the molding component 100 and the quality of the multi-point bending arc steel mold. The tool head of the CNC grooving machine can be swung to plan out V-grooves 111 of different sizes. The swing control of the tool head can be achieved by the CNC grooving machine or a robotic arm in cooperation with a cutting tool.
[0048] In this embodiment, the included angle of the cutter head of the CNC slotting machine is 15°. If the cutter head runs in a straight line, the groove bottom angle of the V-shaped groove 111 is 15°. When the groove bottom of the V-shaped groove 111 to be processed is 45°, the cutter head with an included angle of 15° needs to be controlled to swing left and right, and the swing amplitude is 15°. In this way, a 45° V-shaped groove 111 can be processed by a 15° cutter head without changing the cutter head. By analogy, a swing amplitude of 30° can process a V-shaped groove 111 with a groove bottom angle of 75°, and a swing amplitude of 37.5° can process a V-shaped groove 111 with a groove bottom angle of 90°.
[0049] When processing the 45° V-shaped groove 111, the cutter head is first operated in a straight line at 15° to form a first cutting groove. The first cutting groove includes two groove walls, namely a left groove wall and a right groove wall. In the subsequent process of forming the 45° V-shaped groove 111, the material on the surface of the left groove wall and the right groove wall needs to be further planed away. The planing process can be as follows: In the first method, the cutter head is first swung 15° to the left, and the left groove wall is planed away along the cutting path to form a second cutting groove; the cutter head is then swung 30° to the right, and the right groove wall is planed away along the cutting path to form a third cutting groove; the first cutting groove + the second cutting groove + the third cutting groove form a 45° V-shaped groove 111.
[0050] In the second method, the robot arm controls the cutting tool to swing back and forth 15° about the center line of the first cutting groove, and repeatedly cuts along the cutting path to form a 45° V-shaped groove 111.
[0051] In this embodiment, if Fig.13 and Fig.14As shown, the first assembly 500 is provided with a first corner 530, a second corner 540, a third corner 550, a first arc 560, a fourth corner 570, a fifth corner 580 and a second arc 590; The bending angle of the first corner 530 is 90°, and the first corner 530 is bent in a direction away from the casting surface 520; the bending angle of the second corner 540 is 90°, and the second corner 540 is bent in a direction close to the casting surface 520; the bending angle of the third corner 550 is 75°, and the third corner 550 is bent in a direction away from the casting surface 520; the first arc 560 is bent at multiple points in a direction close to the casting surface 520; the bending angle of the fourth corner 570 is 75°, and the fourth corner 570 is bent in a direction away from the casting surface 520; the bending angle of the fifth corner 580 is 75°, and the fifth corner 580 is bent in a direction close to the casting surface 520; the second arc 590 is bent at multiple points in a direction away from the casting surface 520; The implementation method of providing the pre-treatment tank and the bend at the first corner 530 is referred to the implementation method ② ( Figure 8 ); The second corner 540 has a pre-treatment tank and a bending implementation method, refer to implementation method ⑤ ( Fig.11 ); The third corner 550 is provided with a pre-treatment tank and a bending implementation method, refer to implementation method ① ( Figure 7 ); The first arc 560 has a pre-treatment groove and a bending implementation method, refer to implementation method ⑥ ( Fig.12 ); The fourth corner 570 has a pre-treatment tank and a bend, and the implementation method refers to implementation method ① ( Figure 7 ); The fifth corner 580 has a pre-treatment tank and a bend, and the implementation method refers to implementation method ④ ( Fig.10 ); The second arc 590 has a pre-treatment groove and a bending implementation method, refer to implementation method ③ ( Fig. 9 ).
[0052] Embodiment 11: As a further optimization of Example 10, S6 includes the following steps: S61: According to the design requirements, multiple square tubes 410 are placed in parallel, and a support plate 420 is welded to the top of the square tube 410, and two support plates 420 with holes cut are located at both ends of the square tube 410 to form a support assembly 400; S62: welding the load distribution plate 300 to the bottom surface of the auxiliary stripping plate 200 of the first assembly 500 to form a second assembly 600; S63: welding the second assembly 600 to the support assembly 400, wherein the formed steel plate 110 and the load distribution plate 300 are both welded to the top end surface of the support plate 420; S64: Install the baffle 120 on the support plates 420 at both ends by means of bolts and nuts.
[0053] Through such an assembly method, the assembly of the multi-point bending arc steel mold can be completed quickly, and during the welding and installation by bolts and nuts, the various structures will not interfere with each other.
[0054] The embodiments of the invention are described above in conjunction with the accompanying drawings, but the present embodiment is not limited to the above-mentioned specific implementation modes, which are merely illustrative and not restrictive. Under the guidance of the present embodiment, ordinary technicians in this field can make many forms without departing from the purpose of the present embodiment and the scope of protection of the claims, all of which are within the protection of the present embodiment.
Claims
1. Multi-point bending arc steel mold, characterized in that: include: A forming assembly (100) comprises a forming steel plate (110) and baffles (120) arranged at openings at both ends of the forming steel plate (110), wherein the forming steel plate (110) is formed by transitionally connecting and matching a flat surface and an arc surface, and the baffles (120) are used to block the openings at both ends of the forming steel plate (110); An auxiliary demoulding plate (200) connected to the forming steel plate (110) and used to assist in demoulding a cast concrete component from a multi-point bending arc steel mold; A load distribution plate (300) is connected to the bottom surface or the top surface of the auxiliary stripping plate (200), and the load distribution plate (300) is in contact with the auxiliary stripping plate (200), and the position where the load distribution plate (300) and the auxiliary stripping plate (200) are in contact is the position to be knocked during demoulding; A support assembly (400) is connected to the molding assembly (100) and is used to support the molding assembly (100), the auxiliary stripping plate (200) and the load dispersing plate (300).
2. The multi-point bending arc steel mold according to claim 1, characterized in that: The load distributing plate (300) is connected to the bottom surface of the auxiliary stripping plate (200), and the load distributing plate (300) is connected to the supporting assembly (400).
3. The multi-point bending arc steel mold according to claim 1, characterized in that: The auxiliary stripping plate (200) is obtained by bending the edge of the formed steel plate (110), and the formed steel plate (110) and the auxiliary stripping plate (200) form a first assembly (500).
4. The multi-point bending arc steel mold according to claim 1, characterized in that: The bottom end of the load distributing plate (300) is provided with a supporting plate (310) arranged horizontally.
5. The multi-point bending arc steel mold according to claim 1, characterized in that: The support assembly (400) comprises at least two parallel square tubes (410), and a plurality of support plates (420) connected to the top ends of the square tubes (410); the top end surfaces of the support plates (420) are in contact with the back surfaces of the formed steel plates (110) and the bottom surfaces of the load distribution plates (300); the support plates (420) are arranged in a linear array along the length direction of the square tubes (410); and the support plates (420) at both ends are connected to the baffles (120) by bolts and nuts.
6. The manufacturing process of the multi-point bending arc steel mold according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1: according to design requirements, a first semi-finished product including a first assembly (500), a baffle (120), a load distribution plate (300), a square tube (410) and a support plate (420) is cut from a flat steel plate using a CNC laser cutting machine; S2: according to design requirements, a pre-treatment groove is provided at the corner position of the first semi-finished product of the baffle (120) and the corner position and arc position of the first semi-finished product of the first assembly (500); S3: using a numerically controlled bending machine to bend the first semi-finished product of the first assembly (500), the baffle (120), the load distribution plate (300), the square tube (410) and the support plate (420) at the corner position, thereby obtaining the finished product of the baffle (120), the load distribution plate (300) and the support plate (420), and the second semi-finished product of the first assembly (500) and the square tube (410); S4: using a numerically controlled bending machine to perform multi-point bending on the arc position of the second semi-finished product of the first assembly (500), thereby forming an arc portion of the formed steel plate (110) and obtaining a finished product of the first assembly (500); S5: welding the joint of the second semi-finished product of the square tube (410) to obtain a finished square tube (410); S6: Assembling the first assembly (500), the baffle (120), the load distribution plate (300), the square tube (410), and the support plate (420) by welding and connecting with bolts and nuts to form a multi-point bending circular arc steel mold; S7: grinding the front side of the formed steel plate (110) using sandpaper to remove bending marks formed on the front side of the formed steel plate (110) during the multi-point bending process and heat-affected marks formed on the front side of the formed steel plate (110) during the welding process; S8: Polishing the front side of the formed steel plate (110) using a polishing machine to remove scratches formed during the grinding process.
7. The manufacturing process of the multi-point bending arc steel mold according to claim 6 is characterized in that: In the above-mentioned S1, when the first semi-finished product of the load distribution plate (300), the square tube (410) and the support plate (420) is cut out, a pre-treatment groove is cut out at the corner position of the three.
8. The manufacturing process of the multi-point bending arc steel mold according to claim 7 is characterized in that: When the first semi-finished product of the support plate (420) is cut out in S1, the baffle plate (120) and two of the support plates (420) are subjected to hole cutting processing, and the positions of the holes cut out on the baffle plate (120) and the support plate (420) correspond to each other and cooperate with the bolts.
9. The manufacturing process of the multi-point bending arc steel mold according to claim 7 is characterized in that: When the pretreatment groove is opened on the first assembly (500) and the baffle (120) in S2, it is opened on the non-casting surface (510) of the first assembly (500) and the baffle (120), and the pretreatment groove includes a V-shaped groove (111) and a slit groove (112).
10. The manufacturing process of the multi-point bending arc steel mold according to claim 6, characterized in that: The S6 comprises the following steps: S61: According to design requirements, a plurality of square tubes (410) are placed in parallel, and a support plate (420) is welded to the top of the square tube (410), and two support plates (420) with holes cut therein are located at both ends of the square tube (410), so as to form a support assembly (400); S62: welding the load distributing plate (300) to the bottom surface of the auxiliary stripping plate (200) of the first assembly (500) to form a second assembly (600); S63: welding the second assembly (600) to the support assembly (400), wherein the formed steel plate (110) and the load distribution plate (300) are both welded to the top end surface of the support plate (420); S64: Install the baffle plate (120) on the support plates (420) at both ends by means of bolts and nuts.