Liquid crystal display screen assembly capable of saving packaging cost

Abstract

The utility model discloses a liquid crystal display screen component capable of saving packaging cost, which comprises an upper piece of glass and a lower piece of glass, an upper polaroid is arranged on the upper surface of the upper piece of glass, an upper polaroid protective film is arranged on the upper surface of the upper polaroid, a lower polaroid is arranged on the lower surface of the lower piece of glass, and a lower polaroid protective film is arranged on the lower surface of the lower piece of glass. A lower polaroid protection film is arranged on the lower surface of the lower polaroid, an upper piece of mucosa paper is arranged on the upper surface of the upper polaroid protection film, an upper piece of mucosa paper tearing handle is arranged on the left side edge of the upper piece of mucosa paper, a lower piece of mucosa paper is arranged on the lower surface of the lower polaroid protection film, and a lower piece of mucosa paper tearing handle is arranged on the left side edge of the lower piece of mucosa paper. And the orientation of the upper piece mucosa tearing handle and the orientation of the lower piece mucosa tearing handle are consistent with the arrangement direction of the driving IC. Due to the fact that the upper piece mucosa tearing handle and the lower piece mucosa tearing handle are arranged in the same direction towards the driving IC, special clearance design for packaging of the liquid crystal display screen aiming at the tearing handles is not needed any more, and therefore packaging cost is reduced.

Description

Technical Field

[0001] The utility model relates to a package of a liquid crystal display screen, more specifically, to a liquid crystal display screen component which saves packaging cost. Background Art

[0002] Usually, there is a protective film on the upper and lower glossy surfaces of the LCD screen. This protective film comes with the polarizer and is the same size as the polarizer. Usually, we will attach two pieces of adhesive paper with tear handles on the LCD to facilitate tearing off the protective films on the upper and lower surfaces during terminal application. As shown in Figure 1, the tear handles S are distributed on both sides of the LCD screen. For this design, the adhesive paper tear handles extend outward to the left and right sides of the glass. The packaging design of the product needs to avoid the tear handles in the air, and the space occupied by the product on the packaging becomes larger, that is, the number of products that can be packed in the same volume of packaging becomes smaller, affecting the packaging cost.

[0003] Chinese utility model patent document CN216469473U discloses a liquid crystal display screen packaging device, comprising an outer shell, one side of the inner wall of the outer shell is movably connected to a first wall plate, the other side of the inner wall of the outer shell is movably connected to a second wall plate, the inner wall of the first wall plate is fixedly connected to a vertical plate, both ends of the vertical plate are provided with movable grooves, the inner wall of the movable groove is movably connected to a connecting rod, the connecting rod penetrates the surface of the first wall plate and extends to the inside of the first wall plate, one end of the connecting rod is fixedly connected to a fixed plate, the middle part of the inner side wall of the vertical plate is fixedly connected to a fixed rod, the inner bottom wall of the fixed rod is fixedly connected to a spring column, one end of the spring column is fixedly connected to a contraction rod, the outer surface of the contraction rod is movably connected to the fixed rod, and one end of the contraction rod is fixedly connected to a clamp. Both sides of the first wall plate and the second wall plate are provided with fixed grooves, the upper surface of the first wall plate is fixedly connected to fixed blocks on both sides close to the fixed groove, and one side of the upper surface of the fixed block is provided with a reinforcement groove. A mezzanine is provided on one side of the second wall panel, and the inner wall of the mezzanine is movably connected to the vertical plate. A support rod is fixedly connected to one side of the upper surface of the second wall panel close to the fixed groove, and a telescopic rod is fixedly connected to the inner wall of the support rod, and the telescopic rod is movably connected to the reinforcement groove. A threaded rod is fixedly connected to the upper surface of the movable rod, and a knob is threadedly connected to one end of the threaded rod. The reinforcement groove is movably connected to the threaded rod. The knob is movably connected to the upper surface of the fixed block. A convergence block is fixedly connected to the inner side wall of the outer shell, and the convergence block is movably connected to the inner wall of the fixed groove. A shell cover is movably connected to the top of the outer surface of the outer shell. A top plate is fixedly connected to the inner wall of the shell cover, and the inner wall of the top plate is movably connected to the fixed block.

[0004] Obviously, this patent can well ensure that the LCD screen is well fixed in the packaging device to avoid shaking through the coordinated use of the first wall plate and the second wall plate. This structure cannot solve the problem of the existing tear handle occupying space. Utility Model Content

[0005] Based on this, it is necessary to provide a liquid crystal display assembly that saves packaging costs in response to the above technical problems. The liquid crystal display assembly that saves packaging costs comprises an upper glass and a lower glass. An upper polarizer is provided on the upper surface of the upper glass, and an upper polarizer protective film is provided on the upper surface of the upper polarizer. A lower polarizer is provided on the lower surface of the lower glass, and a lower polarizer protective film is provided on the lower surface of the lower polarizer. A driver IC, binding pins and IC protective glue are provided on the edge of the lower surface of the upper glass, and the IC protective glue completely wraps the driver IC, wherein an upper mucus paper is provided on the upper surface of the upper polarizer protective film, and an upper mucus paper tearing handle is provided on the left edge of the upper mucus paper, and a lower mucus paper tearing handle is provided on the lower surface of the lower polarizer protective film, and a lower mucus paper tearing handle is provided on the left edge of the lower mucus paper, and the directions of the upper mucus paper tearing handle and the lower mucus paper tearing handle are consistent with the setting direction of the driver IC. Since the upper mucosal paper tearing handle and the lower mucosal paper tearing handle are arranged in the same direction toward the driver IC, the packaging shape of the entire LCD screen is a standard rectangle, and there is no need to carry out a special air-avoiding design for the tearing handle on the packaging of the LCD screen. The same volume of packaging can hold more products, thereby reducing the packaging cost.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A liquid crystal display assembly that saves packaging costs, characterized in that the liquid crystal display assembly that saves packaging costs comprises an upper glass and a lower glass, an upper polarizer is provided on the upper surface of the upper glass, an upper polarizer protective film is provided on the upper surface of the upper polarizer, a lower polarizer is provided on the lower surface of the lower glass, a lower polarizer protective film is provided on the lower surface of the lower polarizer, a driver IC, binding pins and IC protective glue are provided on the edge of the lower surface of the upper glass, and the IC protective glue completely wraps the driver IC, wherein an upper mucus paper is provided on the upper surface of the upper polarizer protective film, an upper mucus paper tearing handle is provided on the left edge of the upper mucus paper, a lower mucus paper is provided on the lower surface of the lower polarizer protective film, a lower mucus paper is provided on the left edge of the lower mucus paper, and the upper mucus paper tearing handle and the lower mucus paper tearing handle are oriented in the same direction as the setting direction of the driver IC.

[0008] As a preferred implementation of the liquid crystal display screen assembly for saving packaging costs provided by the utility model, the extended area of ​​the upper glass is larger than that of the lower glass.

[0009] As a preferred embodiment of the liquid crystal display screen assembly for saving packaging costs provided by the utility model, the edges of the upper mucosal paper tearing handle and the lower mucosal paper tearing handle are aligned with the edges of the upper glass.

[0010] As a preferred implementation of the liquid crystal display screen assembly for saving packaging costs provided by the utility model, the thickness of the IC protective glue is consistent with the thickness of the lower glass.

[0011] As a preferred embodiment of the LCD display assembly for saving packaging costs provided by the utility model, the upper mucosal paper tearing handle is provided with an upper mucosal paper tearing handle hand hole, and the lower mucosal paper tearing handle is provided with a lower mucosal paper tearing handle hand hole.

[0012] As a preferred embodiment of the LCD display assembly for saving packaging costs provided by the utility model, the area of ​​the hand hole of the upper mucosal paper tearing handle is larger than half of the extended area of ​​the upper mucosal paper tearing handle, and the area of ​​the hand hole of the lower mucosal paper tearing handle is larger than half of the extended area of ​​the lower mucosal paper tearing handle.

[0013] As a preferred embodiment of the liquid crystal display screen assembly for saving packaging costs provided by the utility model, the hand hole for the upper mucosal paper tearing handle and the hand hole for the lower mucosal paper tearing handle are both circular.

[0014] As a preferred embodiment of the liquid crystal display screen assembly for saving packaging costs provided by the utility model, the hand hole for the upper mucosal paper tearing handle and the hand hole for the lower mucosal paper tearing handle are both square.

[0015] As a preferred embodiment of the LCD display assembly for saving packaging costs provided by the utility model, an upper warping piece is provided at the edge of the upper mucosal paper tearing handle, and a lower warping piece is provided at the edge of the lower mucosal paper tearing handle.

[0016] As a preferred embodiment of the LCD display assembly that saves packaging costs provided by the utility model, the hardness of the upper warping piece is greater than that of the upper mucosal paper tearing handle, and the hardness of the lower warping piece is greater than that of the lower mucosal paper tearing handle.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model provides a liquid crystal display screen component which saves packaging cost. Since the upper mucosa paper tearing handle and the lower mucosa paper tearing handle are arranged in the same direction toward the driver IC, the packaging shape of the entire liquid crystal display screen is a standard rectangle, and it is no longer necessary to carry out a special air-avoiding design for the tearing handle on the packaging of the liquid crystal display screen. The same volume of packaging can hold more products, thereby reducing the packaging cost.

[0019] In addition, the upper mucosa paper tearing handle can be provided with an upper mucosa paper tearing handle hand hole, and the lower mucosa paper tearing handle can be provided with a lower mucosa paper tearing handle hand hole. The area of ​​the upper mucosa paper tearing handle hand hole is greater than half of the extended area of ​​the upper mucosa paper tearing handle, and the area of ​​the lower mucosa paper tearing handle hand hole is greater than half of the extended area of ​​the lower mucosa paper tearing handle. The upper mucosa paper tearing handle hand hole and the lower mucosa paper tearing handle hand hole are both circular. Alternatively, the upper mucosa paper tearing handle hand hole and the lower mucosa paper tearing handle hand hole are both square. Using the upper mucosa paper tearing handle hand hole and the lower mucosa paper tearing handle hand hole, the user can use his fingers to hook the upper mucosa paper tearing handle hand hole and the lower mucosa paper tearing handle hand hole, thereby quickly tearing the upper mucosa paper tearing handle and the lower mucosa paper tearing handle, which is convenient for operation.

[0020] In addition, the edge of the upper mucosal paper tearing handle may be provided with an upper warping piece, and the edge of the lower mucosal paper tearing handle may be provided with a lower warping piece. The upper warping piece has a greater hardness than the upper mucosal paper tearing handle, and the lower warping piece has a greater hardness than the lower mucosal paper tearing handle. By using the upper warping piece and the lower warping piece, the user's fingers can quickly clamp the upper warping piece or the lower warping piece, thereby quickly tearing the upper mucosal paper tearing handle and the lower mucosal paper tearing handle, further facilitating the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] FIG1 is a schematic diagram of the hierarchical structure of a liquid crystal display screen assembly for saving packaging costs according to the present invention;

[0023] FIG2 is a schematic structural diagram of the liquid crystal display assembly for saving packaging costs in FIG1 , at another viewing angle;

[0024] Figure 3 It is a structural schematic diagram of another embodiment of the liquid crystal display assembly for saving packaging cost in FIG. 2 ;

[0025] Figure 4 FIG2 is a schematic structural diagram of another embodiment of a liquid crystal display assembly for saving packaging costs;

[0026] Figure 5 FIG2 is a schematic structural diagram of another embodiment of a liquid crystal display assembly for saving packaging costs;

[0027] Figure 6 for Figure 5 A detailed enlarged schematic diagram of area A of the structural schematic diagram of a liquid crystal display assembly for saving packaging costs;

[0028] Figure 7 It is a structural schematic diagram of a tear handle of an existing liquid crystal display assembly;

[0029] The markings in the figure are as follows: 1. upper glass; 2. lower glass; 21. driver IC; 22. IC protective glue; 3. upper polarizer; 4. upper polarizer protective film; 5. lower polarizer; 6. lower polarizer protective film; 7. upper mucosal paper; 71. upper mucosal paper tearing handle; 711. upper mucosal paper tearing handle hand hole; 712. upper warping piece; 8. lower mucosal paper; 81. lower mucosal paper tearing handle; 811. lower mucosal paper tearing handle hand hole; 812. lower warping piece; 9. binding pins. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0031] As described in the background technology, in the prior art, for liquid crystal display screens, both the upper and lower glossy surfaces of the liquid crystal display screen have a protective film, which is provided by the polarizer, and its size is consistent with that of the polarizer. Usually, we will attach two pieces of adhesive paper with tear handles on the LCD, so that it is convenient to tear off the protective films on the upper and lower surfaces during terminal application. As shown in FIG1 , the tear handles S are distributed on both sides of the liquid crystal display screen. For this design, the tear handles of the adhesive paper extend outward to the left and right sides of the glass, and the packaging design of the product needs to avoid the tear handles in the air, so that the space occupied by the product on the packaging becomes larger, that is, the number of products that can be packed in the same volume of packaging becomes smaller, which affects the packaging cost.

[0032] In order to solve this technical problem, the utility model provides a liquid crystal display assembly that saves packaging costs, comprising an upper glass 1 and a lower glass 2, wherein an upper polarizer 3 is provided on the upper surface of the upper glass 1, an upper polarizer protective film 4 is provided on the upper surface of the upper polarizer 3, a lower polarizer 5 is provided on the lower surface of the lower glass 2, a lower polarizer protective film 6 is provided on the lower surface of the lower polarizer 5, a driver IC 21, a binding pin 9 and an IC protective glue 22 are provided on the edge of the lower surface of the upper glass 1, and the IC protective glue 22 completely wraps the driver IC 21, wherein an upper mucus paper 7 is provided on the upper surface of the upper polarizer protective film 4, and an upper mucus paper tearing handle 71 is provided on the left edge of the upper mucus paper 7, A lower mucous film paper 8 is provided on the lower surface of the lower polarizer protective film 6, and a lower mucous film paper tearing handle 81 is provided on the left edge of the lower mucous film paper 8. The directions of the upper mucous film paper tearing handle 71 and the lower mucous film paper tearing handle 81 are consistent with the setting direction of the driver IC 21.

[0033] Through the above-mentioned structural design, since the upper mucosal paper tearing handle 71 and the lower mucosal paper tearing handle 81 are set in the same direction towards the driver IC 21, the packaging shape of the entire LCD screen is a standard rectangle, and there is no need to carry out special air-avoiding design for the tearing handle of the LCD screen packaging. The same volume of packaging can hold more products, thereby reducing the packaging cost.

[0034] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] Example 1

[0038] As shown in Figures 1 and 2, the liquid crystal display assembly that saves packaging costs includes an upper glass 1 and a lower glass 2, an upper polarizer 3 is provided on the upper surface of the upper glass 1, an upper polarizer protective film 4 is provided on the upper surface of the upper polarizer 3, a lower polarizer 5 is provided on the lower surface of the lower glass 2, a lower polarizer protective film 6 is provided on the lower surface of the lower polarizer 5, a driver IC 21, a binding pin 9 and an IC protective glue 22 are provided on the edge of the lower surface of the upper glass 1, and the IC protective glue 22 completely wraps the driver IC 21, wherein an upper mucus paper 7 is provided on the upper surface of the upper polarizer protective film 4, an upper mucus paper 7 is provided on the left edge of the upper mucus paper 7, and a lower mucus paper tearing handle 71 is provided on the lower surface of the lower polarizer protective film 6, a lower mucus paper 8 is provided on the lower surface of the lower mucus paper 8, and a lower mucus paper tearing handle 81 is provided on the left edge of the lower mucus paper 8, and the directions of the upper mucus paper tearing handle 71 and the lower mucus paper tearing handle 81 are consistent with the setting direction of the driver IC 21.

[0039] It should be noted that the extended area of ​​the upper glass 1 is larger than that of the lower glass 2 .

[0040] In addition, the edges of the upper mucosal paper tearing handle 71 and the lower mucosal paper tearing handle 81 are aligned with the edge of the upper glass 1.

[0041] In addition, the thickness of the IC protection glue 22 is consistent with the thickness of the lower glass 2 .

[0042] The working mode of this embodiment is described below.

[0043] Since the upper mucosal paper tearing handle 71 and the lower mucosal paper tearing handle 81 are set in the same direction toward the driver IC 21, the packaging shape of the entire LCD screen is a standard rectangle, and there is no need to carry out a special air-avoiding design for the tearing handles of the LCD screen packaging. The same volume of packaging can hold more products, thereby reducing the packaging cost.

[0044] Example 2

[0045] like Figure 3 and Figure 4 As shown, the packaging cost-saving LCD display assembly provided in Example 1 is further optimized. Specifically, the upper mucosal paper tearing handle 71 is provided with an upper mucosal paper tearing handle hand hole 711, and the lower mucosal paper tearing handle 81 is provided with a lower mucosal paper tearing handle hand hole 811.

[0046] It should be noted that the area of ​​the upper mucosal paper tearing handle hand hole 711 is larger than half of the extended area of ​​the upper mucosal paper tearing handle 71 , and the area of ​​the lower mucosal paper tearing handle hand hole 811 is larger than half of the extended area of ​​the lower mucosal paper tearing handle 81 .

[0047] In addition, the upper mucosa paper tearing handle hand hole 711 and the lower mucosa paper tearing handle hand hole 811 are both circular. Alternatively, the upper mucosa paper tearing handle hand hole 711 and the lower mucosa paper tearing handle hand hole 811 are both square.

[0048] The working mode of this embodiment is described below.

[0049] By using the upper mucosal paper tearing handle hand hole 711 and the lower mucosal paper tearing handle hand hole 811, the user can use his fingers to hook the upper mucosal paper tearing handle hand hole 711 and the lower mucosal paper tearing handle hand hole 811, so as to quickly tear the upper mucosal paper tearing handle 71 and the lower mucosal paper tearing handle 81, which is convenient for operation.

[0050] Example 3

[0051] like Figure 5 As shown, the packaging cost-saving LCD display assembly provided in Example 1 or 2 is further optimized. Specifically, an upper sheet warping piece 712 is provided at the edge of the upper sheet mucosal paper tearing handle 71, and a lower sheet warping piece 812 is provided at the edge of the lower sheet mucosal paper tearing handle 81.

[0052] It should be noted that the hardness of the upper-piece warping piece 712 is greater than that of the upper-piece mucosal paper tearing handle 71 , and the hardness of the lower-piece warping piece 812 is greater than that of the lower-piece mucosal paper tearing handle 81 .

[0053] The working mode of this embodiment is described below.

[0054] By using the upper warping piece 712 and the lower warping piece 812, the user's fingers can quickly clamp the upper warping piece 712 or the lower warping piece 812, thereby quickly tearing the upper mucosal paper tearing handle 71 and the lower mucosal paper tearing handle 81, further facilitating the operation.

[0055] The terms "coupling" and "coupling" involved in the embodiments of the present application should be understood in a broad sense. For example, they may refer to a direct physical connection, or an indirect connection achieved through electronic devices, such as a connection achieved through resistors, inductors, capacitors or other electronic devices.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A liquid crystal display screen assembly that saves packaging costs, characterized in that: The liquid crystal display assembly for saving packaging costs comprises an upper glass (1) and a lower glass (2); an upper polarizer (3) is provided on the upper surface of the upper glass (1); an upper polarizer protective film (4) is provided on the upper surface of the upper polarizer (3); a lower polarizer (5) is provided on the lower surface of the lower glass (2); a lower polarizer protective film (6) is provided on the lower surface of the lower polarizer (5); a driver IC (21), a binding pin (9) and an IC protective adhesive (22) are provided on the edge of the lower surface of the upper glass (1); the IC protective adhesive (22) completely wraps the driver IC (21); an upper adhesive film (7) is provided on the upper surface of the upper polarizer protective film (4); an upper adhesive film tearing handle (71) is provided on the left edge of the upper adhesive film (7); A lower mucosal paper (8) is provided on the lower surface of the lower polarizer protective film (6), a lower mucosal paper tearing handle (81) is provided on the left edge of the lower mucosal paper (8), and the orientations of the upper mucosal paper tearing handle (71) and the lower mucosal paper tearing handle (81) are consistent with the setting direction of the driver IC (21).

2. The liquid crystal display assembly for saving packaging costs according to claim 1, characterized in that: The extended area of ​​the upper glass (1) is larger than that of the lower glass (2).

3. The liquid crystal display screen assembly for saving packaging cost according to claim 1, characterized in that: The edges of the upper mucosal paper tearing handle (71) and the lower mucosal paper tearing handle (81) are both aligned with the edges of the upper glass (1).

4. The liquid crystal display panel assembly for saving packaging cost according to claim 1, characterized in that: The thickness of the IC protective glue (22) is consistent with the thickness of the lower glass (2).

5. The liquid crystal display panel assembly for saving packaging cost according to claim 1, characterized in that: The upper mucosal paper tearing handle (71) is provided with an upper mucosal paper tearing handle hand hole (711), and the lower mucosal paper tearing handle (81) is provided with a lower mucosal paper tearing handle hand hole (811).

6. The liquid crystal display panel assembly for saving packaging cost according to claim 5, characterized in that: The area of ​​the hand hole (711) of the upper mucosal paper tearing handle is larger than half of the extended area of ​​the upper mucosal paper tearing handle (71), and the area of ​​the hand hole (811) of the lower mucosal paper tearing handle is larger than half of the extended area of ​​the lower mucosal paper tearing handle (81).

7. The liquid crystal display panel assembly for saving packaging cost according to claim 5, characterized in that: The upper mucosal paper tearing handle hand hole (711) and the lower mucosal paper tearing handle hand hole (811) are both circular.

8. The liquid crystal display panel assembly for saving packaging cost according to claim 5, characterized in that: The upper mucosal paper tearing handle hand hole (711) and the lower mucosal paper tearing handle hand hole (811) are both square.

9. The liquid crystal display panel assembly for saving packaging cost according to claim 1, characterized in that: An upper warping piece (712) is provided at the edge of the upper mucosal paper tearing handle (71), and a lower warping piece (812) is provided at the edge of the lower mucosal paper tearing handle (81).

10. The liquid crystal display panel assembly for saving packaging cost according to claim 9, characterized in that: The hardness of the upper warping piece (712) is greater than that of the upper mucosal paper tearing handle (71), and the hardness of the lower warping piece (812) is greater than that of the lower mucosal paper tearing handle (81).

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