A light partition wall strip corner protection device

Abstract

The present invention discloses a corner protection device for lightweight partition wall strips, which solves the technical problem in the prior art that the corners of lightweight partition wall strips are easily damaged by bumps during storage and transportation, which affects the quality and installation quality of the lightweight partition wall strips. The present invention includes a male falcon corner embedding mechanism and a female falcon corner embedding mechanism; the male falcon corner embedding mechanism includes a male falcon corner embedding body and a male falcon corner embedding body baffle, the male falcon corner embedding body is tightly embedded on the male falcon of the lightweight partition wall strip, and the male falcon corner embedding body baffle is tightly fitted on the end surface of the lightweight partition wall strip. The present invention embeds the male falcon corner embedding mechanism and the female falcon corner embedding mechanism on the four corners of the lightweight partition wall board when leaving the factory, which can effectively protect the four corners of the lightweight partition wall board and prevent the four corners of the lightweight partition wall board from being damaged by bumps, thereby ensuring the quality of the lightweight partition wall board, ensuring that it can be smoothly and efficiently plugged and assembled, and also ensuring the effective connection between the lightweight partition wall board and the earthquake-resistant U-shaped card, thereby ensuring the installation quality and installation efficiency of the lightweight partition wall strip.

Description

Technical Field

[0001] The invention relates to the technical field of auxiliary equipment for lightweight partition wall strips, and in particular to a lightweight partition wall strip corner protection device. Background Art

[0002] With the introduction of many national policies to promote prefabricated buildings, prefabricated buildings are also flourishing in China. With the issuance of policies and hard indicators for prefabricated buildings, various regions have stepped up efforts to promote prefabricated construction methods, abandoned traditional construction methods, and chose new wall materials - lightweight partition boards.

[0003] Lightweight partition boards have many advantages such as light weight, high strength, thermal insulation, sound insulation, fire prevention, energy saving and environmental protection. They look like hollow floor slabs with male and female dovetail grooves on both sides. When installing, apply a small amount of caulking adhesive mortar on the male and female dovetail grooves and then plug and assemble them together. The installation is simple and the construction speed is fast. At present, the commonly used types of lightweight partitions in China are mainly: ALC lightweight partition boards, ash slag concrete hollow partition boards, modified gypsum lightweight partition boards, GRC lightweight partition boards, ceramsite lightweight partition boards, and lightweight foamed (porous) lightweight partition boards. The mainstream products are mainly ALC lightweight partition boards, ash slag concrete boards, and modified gypsum lightweight partition boards. With the further development of domestic prefabricated buildings, the application of lightweight partition walls will be more extensive. Therefore, the firmness and safety of lightweight partition walls will receive more widespread attention. At present, lightweight partition panels are mainly connected to the main structure by male and female dovetail grooves, bonding mortar, and seismic U-shaped cards. For buildings with seismic requirements, the effectiveness of the connection is more worthy of attention.

[0004] Due to the huge amount of lightweight partition boards used, lightweight partition boards are generally mass-produced in large-scale production factories. After lightweight partition boards are produced from large-scale production factories, they need to be transferred and stored, as well as transported long and short distances to the installation construction site. During the storage and transportation process, the corners of lightweight partition boards often suffer varying degrees of damage due to bumps, which reduces the quality of the lightweight partition boards and affects the connection and assembly of the lightweight partition boards, thereby affecting the quality of the lightweight partitions and their construction progress.

[0005] Therefore, a lightweight partition wall strip corner protection device is designed to at least solve some of the above technical problems. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a lightweight partition wall strip corner protection device to at least solve part of the above-mentioned technical problems.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0008] A light-weight partition wall slat corner protection device comprises a male corner embedding mechanism matched with the male side corner of the light-weight partition wall slat, and a female corner embedding mechanism matched with the female side corner of the light-weight partition wall slat; the male corner embedding mechanism comprises a male corner embedding body matched with the male side of the light-weight partition wall slat, and a male corner embedding body baffle connected to the top of the male corner embedding body, the male corner embedding body is tightly embedded on the male side of the light-weight partition wall slat at the male side corner of the light-weight partition wall slat, and the male corner embedding body baffle is tightly fitted on the end face of the light-weight partition wall slat.

[0009] Furthermore, a first clamping mechanism is provided on the baffle plate of the male falcon horn embedding body.

[0010] Furthermore, the first clamping mechanism comprises a first oblique insert plate arranged on the inner bottom surface of the baffle plate of the male falcon horn embedding body, and the first oblique insert plate is tightly inserted into the hollow hole of the lightweight partition wall strip board.

[0011] Furthermore, the included angle between the first oblique insert plate and the vertical plane of the baffle plate of the male falcon angle embedding body is 15°.

[0012] Furthermore, the male falcon horn embedded body, the male falcon horn embedded body baffle and the first inclined insert plate are all made of 0.8 mm thick aluminum alloy plate.

[0013] Furthermore, the corner embedding mechanism includes a corner embedding body adapted to the lightweight partition wall slats, and a corner embedding body baffle connected to the top of the corner embedding body. The corner embedding body is tightly embedded on the lightweight partition wall slats at the side corners of the lightweight partition wall slats, and the corner embedding body baffle is tightly fitted to the end surface of the lightweight partition wall slats.

[0014] Furthermore, a second clamping mechanism is provided on the baffle plate of the female falcon horn embedding body.

[0015] Furthermore, the second clamping mechanism comprises a second oblique insert plate arranged on the inner bottom surface of the baffle plate of the female falcon horn embedding body, and the second oblique insert plate is tightly inserted into the hollow hole of the lightweight partition wall strip board.

[0016] Furthermore, the included angle between the second oblique insert plate and the vertical plane of the baffle plate of the female falcon horn embedding body is 15°.

[0017] Furthermore, the female falcon horn embedded body, the female falcon horn embedded body baffle and the second oblique insert plate are all made of 0.8 mm thick aluminum alloy plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention has a simple structure, a scientific and reasonable design, and is easy to use. The male falcon horn embedding mechanism and the female falcon horn embedding mechanism are embedded in the four corners of the lightweight partition board when leaving the factory. The four corners of the lightweight partition board can be effectively protected during the storage and transportation of the lightweight partition board, and the four corners of the lightweight partition board are prevented from being damaged by bumps during the storage and transportation, thereby ensuring the quality of the lightweight partition board and ensuring that it can be smoothly and efficiently plugged in and assembled, and can also ensure the effective connection between the lightweight partition board and the earthquake-resistant U-shaped card, thereby ensuring the installation quality and efficiency of the lightweight partition strips.

[0020] The present invention mainly comprises a male horn embedding mechanism and a female horn embedding mechanism. The male horn embedding mechanism comprises a male horn embedding body adapted to the male horn of the lightweight partition wall strip and a male horn embedding body baffle connected to the top of the male horn embedding body. A first inclined plug plate is also provided on the male horn embedding body baffle. When in use, the male horn embedding body is aligned with the male horn of the lightweight partition wall strip and slowly embedded on the male horn of the lightweight partition wall strip until the male horn embedding body baffle is tightly fitted with the end face of the lightweight partition wall strip. During the process, the first inclined plug plate needs to be aligned with the nearest hollow hole of the lightweight partition wall strip on the end face of the lightweight partition wall strip so that the first inclined plug plate is inserted into the hollow hole of the lightweight partition wall strip. Since the first inclined plug plate and the vertical plane of the male horn embedding body baffle form an angle of 15°, the male horn embedding body baffle is closest to the end face of the lightweight partition wall strip. Finally, they are parallel and tightly fitted, and the hollow hole of the lightweight partition wall strip is perpendicular to the end face of the lightweight partition wall strip. Therefore, a 15° angle is formed between the first inclined plug plate and the inner wall of the hollow hole of the lightweight partition wall strip. In this way, a geometrically tight bite is formed between the male corner embedding body and the male corner of the lightweight partition wall strip, and a tight friction and extrusion is formed between the first inclined plug plate and the inner wall of the hollow hole of the lightweight partition wall strip. Finally, the male corner embedding mechanism is tightly embedded in the male side corner of the lightweight partition wall strip, ensuring that the male corner embedding mechanism will not fall off from the male side corner of the lightweight partition wall strip. In this way, the male side corner of the lightweight partition wall strip can be effectively protected. When the lightweight partition wall strip is transported to the lightweight partition wall construction condition, the male corner embedding mechanism can be removed from the male side corner of the lightweight partition wall strip and can be reused, saving raw materials and costs.

[0021] The female falcon horn embedding mechanism of the present invention comprises a female falcon horn embedding body adapted to the female falcon of the lightweight partition wall strip and a female falcon horn embedding body baffle connected to the top of the female falcon horn embedding body, and a second inclined plug plate is also provided on the female falcon horn embedding body baffle. When in use, the female falcon horn embedding body is aligned with the female falcon of the lightweight partition wall strip and slowly embedded in the female falcon of the lightweight partition wall strip until the female falcon horn embedding body baffle is tightly fitted with the end face of the lightweight partition wall strip. During the process, the second inclined plug plate needs to be aligned with the nearest hollow hole of the lightweight partition wall strip on the end face of the lightweight partition wall strip so that the second inclined plug plate is inserted into the hollow hole of the lightweight partition wall strip. Since the second inclined plug plate and the vertical plane of the female falcon horn embedding body baffle form an angle of 15°, the female falcon horn embedding body baffle and the end face of the lightweight partition wall strip are finally parallel and tightly fitted, and the lightweight partition wall strip is easily damaged. The hollow hole of the partition board is perpendicular to the end face of the lightweight partition board. Therefore, a 15° angle is formed between the second inclined plug plate and the inner wall of the hollow hole of the lightweight partition board. In this way, a geometrically tight bite is formed between the female corner embedding body and the female corner of the lightweight partition board, and a tight friction and extrusion is formed between the second inclined plug plate and the inner wall of the hollow hole of the lightweight partition board, so that the female corner embedding mechanism is finally tightly embedded in the female corner of the lightweight partition board to ensure that the female corner embedding mechanism will not fall off from the female corner of the lightweight partition board. In this way, the female corner of the lightweight partition board can be effectively protected. When the lightweight partition board is transported to the lightweight partition construction condition, the female corner embedding mechanism can be removed from the female corner of the lightweight partition board and can be reused, saving raw materials and costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention.

[0023] Figure 2 This is an end view of the lightweight partition board of the present invention.

[0024] Figure 3 It is a schematic diagram of the male falcon horn embedding mechanism of the present invention.

[0025] Figure 4 It is a side perspective view of the male falcon horn embedding mechanism of the present invention.

[0026] Figure 5 It is a schematic diagram of the female falcon horn embedding mechanism of the present invention.

[0027] Figure 6 It is a side perspective view of the female falcon horn embedding mechanism of the present invention.

[0028] The names corresponding to the reference numerals are:

[0029] 1-male falcon horn embedding mechanism, 2-female falcon horn embedding mechanism, 3-male falcon of lightweight partition wall strip, 4-male falcon horn embedding body, 5-male falcon horn embedding body baffle, 6-end face of lightweight partition wall strip, 7-first oblique plug plate, 8-hollow hole of lightweight partition wall strip, 9-female falcon of lightweight partition wall strip, 10-female falcon horn embedding body, 11-female falcon horn embedding body baffle, 12-second oblique plug plate, 13-lightweight partition wall board. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore they cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; of course, it can also be a mechanical connection or an electrical connection; in addition, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] like Figure 1-6As shown, a lightweight partition board corner protection device provided by the present invention has a simple structure, a scientific and reasonable design, and is easy to use. The male falcon corner embedding mechanism and the female falcon corner embedding mechanism are embedded in the four corners of the lightweight partition board 13 when leaving the factory. During the storage and transportation of the lightweight partition board, the four corners of the lightweight partition board can be effectively protected to prevent the four corners of the lightweight partition board from being damaged by bumps during storage and transportation, thereby ensuring the quality of the lightweight partition board and ensuring its smooth and efficient plug-in and assembly, and ensuring the effective connection between the lightweight partition board and the seismic U-shaped card, thereby ensuring the installation quality and efficiency of the lightweight partition board. The present invention includes a male corner embedding mechanism 1 adapted to the male side corner of a lightweight partition board, and a female corner embedding mechanism 2 adapted to the female side corner of the lightweight partition board; the male corner embedding mechanism 1 includes a male corner embedding body 4 adapted to the male side 3 of the lightweight partition board, and a male corner embedding body baffle 5 connected to the top of the male corner embedding body 4, the male corner embedding body 4 is tightly embedded on the male side corner of the lightweight partition board 3, and the male corner embedding body baffle 5 is tightly fitted on the end face 6 of the lightweight partition board.

[0034] The present invention provides a first clamping mechanism on the male falcon horn embedded body baffle 5, and the first clamping mechanism includes a first oblique insert plate 7 provided on the inner bottom surface of the male falcon horn embedded body baffle 5, and the first oblique insert plate 7 is tightly inserted into the hollow hole 8 of the lightweight partition wall strip. The angle between the first oblique insert plate 7 and the vertical plane of the male falcon horn embedded body baffle 5 is 15°, and the male falcon horn embedded body 4, the male falcon horn embedded body baffle 5 and the first oblique insert plate 7 are all made of 0.8mm thick aluminum alloy plate.

[0035] The present invention mainly comprises a male horn embedding mechanism and a female horn embedding mechanism. The male horn embedding mechanism comprises a male horn embedding body adapted to the male horn of the lightweight partition wall strip and a male horn embedding body baffle connected to the top of the male horn embedding body. A first inclined plug plate is also provided on the male horn embedding body baffle. When in use, the male horn embedding body is aligned with the male horn of the lightweight partition wall strip and slowly embedded on the male horn of the lightweight partition wall strip until the male horn embedding body baffle is tightly fitted with the end face of the lightweight partition wall strip. During the process, the first inclined plug plate needs to be aligned with the nearest hollow hole of the lightweight partition wall strip on the end face of the lightweight partition wall strip so that the first inclined plug plate is inserted into the hollow hole of the lightweight partition wall strip. Since the first inclined plug plate and the vertical plane of the male horn embedding body baffle form an angle of 15°, the male horn embedding body baffle is closest to the end face of the lightweight partition wall strip. Finally, they are parallel and tightly fitted, and the hollow hole of the lightweight partition wall strip is perpendicular to the end face of the lightweight partition wall strip. Therefore, a 15° angle is formed between the first inclined plug plate and the inner wall of the hollow hole of the lightweight partition wall strip. In this way, a geometrically tight bite is formed between the male corner embedding body and the male corner of the lightweight partition wall strip, and a tight friction and extrusion is formed between the first inclined plug plate and the inner wall of the hollow hole of the lightweight partition wall strip. Finally, the male corner embedding mechanism is tightly embedded in the male side corner of the lightweight partition wall strip, ensuring that the male corner embedding mechanism will not fall off from the male side corner of the lightweight partition wall strip. In this way, the male side corner of the lightweight partition wall strip can be effectively protected. When the lightweight partition wall strip is transported to the lightweight partition wall construction condition, the male corner embedding mechanism can be removed from the male side corner of the lightweight partition wall strip and can be reused, saving raw materials and costs.

[0036] The corner embedding mechanism 2 of the present invention includes a corner embedding body 10 adapted to the lightweight partition wall strip corner 9, and a corner embedding body baffle 11 connected to the top of the corner embedding body 10. The corner embedding body 10 is tightly embedded on the lightweight partition wall strip corner 9 at the side corner of the lightweight partition wall strip, and the corner embedding body baffle 11 is tightly fitted on the end face 6 of the lightweight partition wall strip.

[0037] The female falcon horn embedded body baffle 11 of the present invention is provided with a second clamping mechanism. The second clamping mechanism includes a second oblique insert plate 12 provided on the inner bottom surface of the female falcon horn embedded body baffle 11, and the second oblique insert plate 12 is tightly inserted into the hollow hole 8 of the lightweight partition wall strip. The angle between the second oblique insert plate 12 and the vertical plane of the female falcon horn embedded body baffle 11 is 15°. The female falcon horn embedded body 10, the female falcon horn embedded body baffle 11 and the second oblique insert plate 12 are all made of 0.8mm thick aluminum alloy plate.

[0038] The female falcon horn embedding mechanism of the present invention comprises a female falcon horn embedding body adapted to the female falcon of the lightweight partition wall strip and a female falcon horn embedding body baffle connected to the top of the female falcon horn embedding body, and a second inclined plug plate is also provided on the female falcon horn embedding body baffle. When in use, the female falcon horn embedding body is aligned with the female falcon of the lightweight partition wall strip and slowly embedded in the female falcon of the lightweight partition wall strip until the female falcon horn embedding body baffle is tightly fitted with the end face of the lightweight partition wall strip. During the process, the second inclined plug plate needs to be aligned with the nearest hollow hole of the lightweight partition wall strip on the end face of the lightweight partition wall strip so that the second inclined plug plate is inserted into the hollow hole of the lightweight partition wall strip. Since the second inclined plug plate and the vertical plane of the female falcon horn embedding body baffle form an angle of 15°, the female falcon horn embedding body baffle and the end face of the lightweight partition wall strip are finally parallel and tightly fitted, and the lightweight partition wall strip is easily damaged. The hollow hole of the partition board is perpendicular to the end face of the lightweight partition board. Therefore, a 15° angle is formed between the second inclined plug plate and the inner wall of the hollow hole of the lightweight partition board. In this way, a geometrically tight bite is formed between the female corner embedding body and the female corner of the lightweight partition board, and a tight friction and extrusion is formed between the second inclined plug plate and the inner wall of the hollow hole of the lightweight partition board, so that the female corner embedding mechanism is finally tightly embedded in the female corner of the lightweight partition board to ensure that the female corner embedding mechanism will not fall off from the female corner of the lightweight partition board. In this way, the female corner of the lightweight partition board can be effectively protected. When the lightweight partition board is transported to the lightweight partition construction condition, the female corner embedding mechanism can be removed from the female corner of the lightweight partition board and can be reused, saving raw materials and costs.

[0039] The lightweight partition boards of the present invention are used in huge quantities. The lightweight partition boards are generally mass-produced in large-scale production factories. After the lightweight partition boards are produced from the large-scale production factories, they need to be transported for storage, as well as transported over long and short distances to the installation construction sites. During the storage and transportation process, the corners of the lightweight partition boards are often damaged to varying degrees due to bumps, thereby reducing the quality of the lightweight partition boards and affecting the plug-in assembly of the lightweight partition boards, thereby affecting the quality of the lightweight partitions and their construction progress. Therefore, the present invention provides a lightweight partition board corner protection device, which is installed after the lightweight partition board is produced, and the four corners of the lightweight partition board are well protected during the factory transportation, on-site transfer and other relocation processes. Since the earthquake-resistant U-shaped clips are mainly installed at the diagonal positions where the two boards meet, the integrity of the four corners is protected, thereby ensuring the firmness of the connection between the lightweight partition board and the earthquake-resistant U-shaped clips, thereby comprehensively improving the construction quality of the lightweight partition board and enhancing the safety and reliability of the lightweight partition board. On the other hand, the corner protection device can be disassembled, recycled and reused after being transported to the installation location and before installation, so that it can be repeatedly used and save costs.

[0040] The present invention can protect the integrity of the four corners of the lightweight partition wall strips, so that the lightweight partition wall strips and the earthquake-resistant U-shaped cards can be more effectively connected, and the installation quality of the lightweight partition wall strips can be improved. The male falcon corner embedding mechanism and the female falcon corner embedding mechanism of the present invention are both made of 0.8mm aluminum alloy plates, which are simple to manufacture and easy to obtain. The male falcon corner embedding mechanism and the female falcon corner embedding mechanism of the present invention are both geometrically engaged with the lightweight partition wall strips, and the first inclined plug plate and the second inclined plug plate both produce extrusion friction with the hollow hole wall of the lightweight partition wall strips, so that the male falcon corner embedding mechanism and the female falcon corner embedding mechanism are both double and firmly connected with the lightweight partition wall strips, ensuring that the male falcon corner embedding mechanism and the female falcon corner embedding mechanism will not fall off the lightweight partition wall strips. After being transported to the lightweight partition wall construction condition along with the lightweight partition wall strips, the present invention can be disassembled, recycled and reused before the lightweight partition wall strips are installed, so that it can be repeatedly used and save costs.

[0041] Finally, it should be noted that the above embodiments are only preferred embodiments of the present invention to illustrate the technical solutions of the present invention, rather than limiting them, and certainly not limiting the patent scope of the present invention. Although the present invention has 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 recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. In other words, any changes or modifications made to the main design concept and spirit of the present invention that have no substantive significance, and the technical problems they solve are still consistent with the present invention, should be included in the protection scope of the present invention. In addition, the direct or indirect application of the technical solutions of the present invention in other related technical fields is also included in the patent protection scope of the present invention.

Claims

1. A lightweight partition wall strip corner protection device, characterized in that: It comprises a male corner embedding mechanism (1) adapted to the male corner of the lightweight partition wall strip, and a female corner embedding mechanism (2) adapted to the female corner of the lightweight partition wall strip; the male corner embedding mechanism (1) comprises a male corner embedding body (4) adapted to the male corner of the lightweight partition wall strip (3), and a male corner embedding body baffle (5) connected to the top of the male corner embedding body (4); the male corner embedding body (4) is tightly embedded on the male corner of the lightweight partition wall strip (3) at the male corner of the lightweight partition wall strip, and the male corner embedding body baffle (5) is tightly fitted on the end surface (6) of the lightweight partition wall strip; A first clamping mechanism is provided on the male falcon horn embedded body baffle (5); The first clamping mechanism comprises a first oblique insert plate (7) provided on the inner bottom surface of the male falcon horn embedded body baffle plate (5), the first oblique insert plate (7) being tightly inserted into the hollow hole (8) of the lightweight partition wall strip plate; The angle between the first oblique insert plate (7) and the vertical plane of the male falcon horn embedded body baffle plate (5) is 15 degrees; the male falcon horn embedded body (4), the male falcon horn embedded body baffle plate (5) and the first oblique insert plate (7) are all made of 0.8 mm thick aluminum alloy plate; The corner embedding mechanism (2) comprises a corner embedding body (10) adapted to the light partition wall strip corner (9), and a corner embedding body baffle (11) connected to the top of the corner embedding body (10); the corner embedding body (10) is tightly embedded on the light partition wall strip corner (9) at the side corner of the corner of the light partition wall strip; and the corner embedding body baffle (11) is tightly fitted on the end surface (6) of the light partition wall strip; A second clamping mechanism is provided on the female falcon horn embedded body baffle (11); The second clamping mechanism comprises a second oblique insert plate (12) provided on the inner bottom surface of the female falcon horn embedded body baffle plate (11), the second oblique insert plate (12) being tightly inserted into the hollow hole (8) of the lightweight partition wall strip plate; The included angle between the second oblique insert plate (12) and the vertical plane of the female falcon horn embedded body baffle plate (11) is 15°; The female falcon horn embedded body (10), the female falcon horn embedded body baffle (11) and the second oblique insert plate (12) are all made of 0.8 mm thick aluminum alloy plate.

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