Laminated backing paper removing and pasting tool

Abstract

The utility model relates to a tool for removing and pasting laminated backing paper. The tool comprises an operating rod; a mounting plate; the adhesive tape disc is detachably mounted on the operating rod, and the adhesive tape comprises backing paper and an adhesive layer; the laminating object disc is detachably mounted on the operating rod, and the laminating object disc is configured to enable a laminating object to be arranged close to the adhesive layer; the laminating mechanism is mounted on the mounting plate and can be used for laminating and connecting the passing laminating object with the adhesive layer of the adhesive tape; the separating mechanism is located at the rear end of the laminating mechanism and can separate the bottom paper of the adhesive tape passing through the laminating mechanism from the adhesive layer so as to form a target object where the adhesive layer is connected with the laminating object; the glue pasting wheel is rotatably mounted on the mounting plate and located at the rear end of the backing paper removing mechanism, and the target object is tightly attached to the glue pasting wheel, so that the object to be pasted can be pasted to the target position through the adhesive layer under specific conditions, the pasting of the adhesive layer and the object to be pasted and the separation of the target object and the backing paper are both automatic, and the production efficiency is improved. And the production efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laminating, and particularly relates to a lamination tool for excluding a composite base paper. Background Art

[0002] In the industrial and home improvement industries, it is often necessary to laminate various laminates on walls or floors. Under certain specific requirements, such as when there is a need to protect the laminate or when precise positioning of the laminate is required, the laminate is often laminated by first laminating the laminate with a tape.

[0003] However, in the prior art, the laminate is usually manually laminated with the tape, but the accuracy is poor and the efficiency is low; or a tool is used to laminate first and then wind up, and then bonding is carried out. The steps are complex, the efficiency is low, the material cost is wasted and relatively high, and the stability is poor.

[0004] Therefore, it is necessary to improve the prior art to overcome the defects in the prior art. Content of the Utility Model

[0005] In view of this, an embodiment of the present application provides a lamination tool for excluding a composite base paper to solve at least one problem in the background art, including:

[0006] An operating rod;

[0007] A mounting plate connected to the end of the operating rod;

[0008] A tape reel detachably mounted on the operating rod for providing a tape, the tape including a base paper and an adhesive layer laminated with the base paper;

[0009] A laminate disk detachably mounted on the operating rod and located on both sides of the operating rod with respect to the tape reel for providing a laminate, the laminate disk being configured such that the laminate is disposed close to the adhesive layer;

[0010] A lamination mechanism mounted on the mounting plate and capable of laminating and connecting the passing laminate with the adhesive layer of the tape;

[0011] A separation mechanism located at the rear end of the lamination mechanism and capable of separating the base paper of the tape passing through the lamination mechanism from the adhesive layer to form a target object in which the adhesive layer is connected to the laminate;

[0012] A tape sticking wheel rotatably mounted on the mounting plate and located at the rear end of the base paper exclusion mechanism, with the target object closely attached to the tape sticking wheel.

[0013] Optionally, for the above-mentioned composite base paper excluding laminating tooling, the laminating mechanism includes a first pressing wheel rotatably mounted on the mounting plate and a second pressing wheel that is adapted to and rotatable with the first pressing wheel, and both the laminating object and the tape pass between the first pressing wheel and the second pressing wheel.

[0014] Optionally, for the above-mentioned composite base paper excluding laminating tooling, the laminating mechanism further includes a connecting plate, a first rotating shaft and a second rotating shaft provided at both ends of the connecting plate. The connecting plate is connected to the mounting plate through the first rotating shaft, and the second pressing wheel is connected to the connecting plate through the second rotating shaft. The connecting plate can drive the second pressing wheel to move relative to the first pressing wheel to abut against or separate from the first pressing wheel.

[0015] Optionally, for the above-mentioned composite base paper excluding laminating tooling, the separating mechanism includes a conveying wheel, a separating wheel, a tensioning wheel arranged in sequence from front to back, and a first guiding wheel located above the separating wheel. The tensioning wheel is closely attached to the separating wheel and the tensioning wheel can drive the separating wheel to rotate;

[0016] The base paper of the tape passing through the conveying wheel is separated from the adhesive layer, and the base paper passes between the tensioning wheel and the separating wheel. The target object is arranged around the first guiding wheel and the tape-applying wheel in sequence.

[0017] Optionally, for the above-mentioned composite base paper excluding laminating tooling, a strip-shaped groove is provided on the mounting plate in the front-back direction;

[0018] The separating wheel is installed in the strip-shaped groove through a mounting block. The mounting block is adapted to the strip-shaped groove and can move in the strip-shaped groove to approach or move away from the tensioning wheel.

[0019] Optionally, for the above-mentioned composite base paper excluding laminating tooling, the tooling further includes a transmission member connecting the tape-applying wheel and the tensioning wheel, and the tape-applying wheel drives the tensioning wheel to rotate through the transmission member.

[0020] Optionally, for the above-mentioned composite base paper excluding laminating tooling, the transmission member is a synchronous belt.

[0021] Optionally, for the above-mentioned composite base paper excluding laminating tooling, the tooling further includes an anti-backward mechanism provided on one side of the tape-applying wheel. The anti-backward mechanism includes a limiting member and a tension spring. One end of the limiting member is arranged close to the tape-applying wheel, and the other end is installed on the mounting plate. The target object passes between the tape-applying wheel and the limiting member; one end of the tension spring is connected to the limiting member, and the other end is fixed on the mounting plate. The tension spring is configured to tighten the limiting member so that the limiting member always abuts against the tape-applying wheel.

[0022] Optionally, for the above-mentioned composite base paper excluding laminating tooling, the tooling further includes a first guide member and a second guide member arranged at the front end of the laminating mechanism. The first guide member includes a first guide hole, and the second guide member includes a second guide hole. The laminating object sequentially passes through the first guide hole and between the first pressing wheel and the second pressing wheel, and the tape sequentially passes through the second guide hole and between the first pressing wheel and the second pressing wheel.

[0023] Optionally, for the above-mentioned composite base paper excluding laminating tooling, the first guide member includes an opening communicating with the first guide hole;

[0024] The first guide member includes a first protruding portion and a second protruding portion arranged oppositely. The opening is located between the bottom of the first protruding portion and the top of the second protruding portion, and the bottom of the first protruding portion and the top of the second protruding portion at least partially overlap in the horizontal direction.

[0025] Compared with the prior art, the present application has the following beneficial effects: By providing a tape reel and a laminating object reel detachably mounted on the operating rod, as well as a laminating mechanism and a separating mechanism mounted on the mounting plate, and the laminating object reel is configured such that the laminating object is arranged close to the adhesive layer, the laminating mechanism can laminate and connect the passing laminating object with the adhesive layer of the tape, and the separating mechanism can separate the base paper of the tape passing through the laminating mechanism from the adhesive layer to form an object with the adhesive layer connected to the laminating object, so that it is possible to attach the laminating object to the target position through the adhesive layer in specific cases, and both the lamination of the adhesive layer and the laminating object and the separation of the object from the base paper are automated, greatly improving the production efficiency. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of a composite base paper excluding laminating tooling shown in the present application;

[0027] Figure 2 is Figure 1 the enlarged partial view shown;

[0028] Figure 3 is a schematic structural diagram of a composite base paper excluding laminating tooling in another direction shown in the present application;

[0029] Figure 4 is Figure 3 the enlarged partial view shown.

[0030] Wherein: 100 - laminating object, 200 - base paper;

[0031] 1 - operating rod;

[0032] 2 - mounting plate, 21 - strip-shaped groove;

[0033] 3 - tape reel;

[0034] 4 - Cover plate

[0035] 5 - Laminating mechanism, 51 - First pressing wheel, 52 - Second pressing wheel, 53 - Connecting plate, 54 - First rotating shaft, 55 - Second rotating shaft;

[0036] 6 - Separating mechanism, 61 - Conveying wheel, 62 - Separating wheel, 63 - Tensioning wheel, 64 - First guiding wheel, 65 - Second guiding wheel, 66 - Third guiding wheel;

[0037] 7 - Gluing wheel;

[0038] 8 - First guiding member, 81 - First guiding hole, 82 - Opening, 83 - First protruding portion, 84 - Second protruding portion;

[0039] 9 - Second guiding member, 91 - Second guiding hole;

[0040] 10 - Transmission member;

[0041] 101 - Anti - reverse mechanism, 1011 - Limiting member. Detailed implementation mode

[0042] The exemplary embodiments disclosed in the present application will be described in more detail below. In the following description, a large number of specific details are given to provide a more thorough understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application, some well - known technical features are not described; that is, not all features of the actual embodiments are described here, and the well - known functions and structures are not described in detail.

[0043] It should be understood that when an element or layer is referred to as being "on", "adjacent to", "connected to" or "coupled to" another element or layer, it can be directly on, adjacent to, connected or coupled to the other element or layer, or there may be intervening elements or layers. In contrast, when an element is referred to as being "directly on", "directly adjacent to", "directly connected to" or "directly coupled to" another element or layer, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Thus, without departing from the teachings of the present application, the first element, component, region, layer or part discussed below may be referred to as the second element, component, region, layer or part. And when discussing the second element, component, region, layer or part, it does not imply that there must be a first element, component, region, layer or part in the present application.

[0044] Spatial relationship terms such as "under", "below", "beneath", "underneath", "above", "over", etc. are used herein for convenience in describing the relationship of one element or feature shown in the figures to other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relationship terms are intended to include different orientations of the device in use and operation.

[0045] The purpose of the terms used herein is only to describe specific embodiments and is not a limitation of the present application. As used herein, the singular forms "a", "an" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms "comprising" and / or "including", when used in this specification, specify the presence of the features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups. As used herein, the term "and / or" includes any and all combinations of the related listed items.

[0046] To fully understand the present application, detailed steps and detailed structures will be presented in the following description to explain the technical solutions of the present application. The preferred embodiments of the present application are described in detail below. However, in addition to these detailed descriptions, the present application may have other embodiments.

[0047] Please refer to Figures 1 - 4As shown in the figure, a bottom paper removal and laminating tooling for a preferred embodiment of the present application includes an operating rod 1, a mounting plate 2 connected to the end of the operating rod 1, a tape reel 3 detachably mounted on the operating rod 1, a laminating object reel 4 detachably mounted on the operating rod 1, a laminating mechanism 5 mounted on the mounting plate 2, a separating mechanism 6 located at the rear end of the laminating mechanism 5, and an adhesive application wheel 7 rotatably mounted on the mounting plate 2; the operating rod 1 facilitates the operator to hold and operate the entire tooling; the tape reel 3 is used to provide tape, and the tape includes a bottom paper 300 and an adhesive layer laminated with the bottom paper 300; the laminating object reel 4 and the tape reel 3 are respectively located on both sides of the operating rod 1, and the laminating object reel 4 is used to provide a laminating object 100, and the laminating object reel 4 is configured such that the laminating object 100 is disposed close to the adhesive layer; the laminating mechanism 5 can laminate and connect the passing laminating object 100 with the adhesive layer of the tape; the separating mechanism 6 can separate the bottom paper 300 of the tape passing through the laminating mechanism 5 from the adhesive layer to form an object in which the adhesive layer is connected to the laminating object 100; the adhesive application wheel 7 is located at the rear end of the bottom paper removal mechanism, and the object is closely attached to the adhesive application wheel, so as to fix the laminating object 100 at the target position through the adhesive layer of the tape and automatically separate the bottom paper 300 of the tape. It not only has high efficiency, but also has a simple structure and high precision, and can also press the laminating object 100 at the target position through the adhesive application wheel 7 to improve stability.

[0048] It should be noted that in this embodiment, the target position can be a wall surface, a ground surface, a workbench surface, etc.; the laminating object 100 can be an optical fiber. In other embodiments, the specific target position is not specifically limited, nor is the specific type of the laminating object 100 specifically limited, and both can be designed according to actual situations.

[0049] Specifically, referring to Figure 2 As shown in the figure, the laminating mechanism 5 includes a first pressing wheel 51 rotatably mounted on the mounting plate 2 and a second pressing wheel 52 adapted to and rotatable with the first pressing wheel 51, and the laminating object 100 and the tape both pass between the first pressing wheel 51 and the second pressing wheel 52. So that the first pressing wheel 51 and the second pressing wheel 52 can uniformly press the laminating object 100 and the tape to ensure the firmness and stability of the lamination.

[0050] More specifically, the laminating mechanism 5 also includes a connecting plate 53, a first rotating shaft 54 and a second rotating shaft 55 arranged at both ends of the connecting plate 53. The connecting plate 53 is connected to the mounting plate 2 via the first rotating shaft 54, and the second pressing wheel 52 is connected to the connecting plate 53 via the second rotating shaft 55. The connecting plate 53 can drive the second pressing wheel 52 to move relative to the first pressing wheel 51 to abut against or separate from the first pressing wheel 51, so as to adjust the distance between the first pressing wheel 51 and the second pressing wheel 52. On the one hand, it is convenient to pass the tape and the coating 100 between the first pressing plate and the second pressing plate; on the other hand, it can adapt to the coating 100 and tapes of different thicknesses, thereby improving the versatility of the tooling.

[0051] The laminating base paper 300 excluding laminating tooling also includes a first guide member 8 and a second guide member 9 arranged at the front end of the laminating mechanism 5, the first guide member 8 includes a first guide hole 81, the second guide member 9 includes a second guide hole 91, the coating 100 passes through the first guide hole 81 and between the first pressing wheel 51 and the second pressing wheel 52 in sequence, and the tape passes through the second guide hole 91 and between the first pressing wheel 51 and the second pressing wheel 52 in sequence, so as to accurately guide the coating 100 and the tape to enter between the first pressing wheel 51 and the second pressing wheel 52, thereby improving the accuracy and efficiency of laminating and reducing operational errors.

[0052] In detail, the first guide member 8 includes an opening 82 connected to the first guide hole 81; the first guide member 8 includes a first protrusion 83 and a second protrusion 84 arranged opposite to each other, and the opening 82 is located between the bottom of the first protrusion 83 and the top of the second protrusion 84, and the bottom of the first protrusion 83 and the top of the second protrusion 84 at least partially overlap in the horizontal direction. It can also be understood that the opening 82 is in a Z shape. The advantage of this arrangement is that it is convenient for the covering 100 to enter the first guide hole 81 from the opening 82, and the Z-shaped opening can also make the first protrusion 83 and the second protrusion 84 resist the covering 100 when the covering 100 approaches the opening 82, so as to prevent the covering 100 from falling out of the opening 82.

[0053] As mentioned above, reference Figure 3 and Figure 4As shown, the separating mechanism 6 includes a conveying wheel 61, a separating wheel 62, a tensioning wheel 63 arranged in sequence from front to back, and a first guiding wheel 64 located above the separating wheel 62. The tensioning wheel 63 is closely attached to the separating wheel 62 and the tensioning wheel 63 can drive the separating wheel 62 to rotate; the base paper 300 of the tape passing through the conveying wheel 61 is separated from the adhesive layer, and the base paper 300 passes through the space between the tensioning wheel 63 and the separating wheel 62. The target object sequentially winds around the first guiding wheel 64 and the pasting wheel 7, so as to orderly separate the base paper 300 from the adhesive layer. The tensioning wheel 63 ensures the stable tension of the base paper 300, improving the separation effect and reliability. It should be noted that in other embodiments, the first guiding wheel 64 is not limited to being above the separating wheel 62, and the specific situation can be adjusted according to the position of the tape and the covering object 100, as long as the above effects can be achieved.

[0054] In this embodiment, the separating mechanism 6 further includes a second guiding wheel 65 and a third guiding wheel 66. The target object (covering object 100 and adhesive layer) sequentially winds around the first guiding wheel 64, the second guiding wheel 65, the third guiding wheel 66 and the pasting wheel 7. Through the arrangement of the second guiding wheel 65 and the second guiding wheel 65, it is possible to prevent the adhesive layer from sticking to other places. It should be noted that in this embodiment, all the structures in contact with the adhesive layer are non-sticking wheels. For example, the first guiding wheel 64, the second guiding wheel 65, the third guiding wheel 66 and the pasting wheel 7.

[0055] Further, a strip-shaped groove 21 is arranged on the mounting plate 2 in the front-back direction; the separating wheel 62 is installed in the strip-shaped groove 21 through a mounting block. The mounting block is adapted to the strip-shaped groove 21 and can move in the strip-shaped groove 21 to approach or move away from the tensioning wheel 63, so as to flexibly adjust the distance between the separating wheel 62 and the tensioning wheel 63 according to actual needs, facilitating the passage of the base paper 300 through the space between the separating wheel 62 and the tensioning wheel 63, and at the same time adapting to tapes of different specifications, improving the adaptability of the tooling.

[0056] The laminating base paper 300 excluding the pasting tooling further includes a transmission member 10 connecting the pasting wheel 7 and the tensioning wheel 63. The pasting wheel 7 drives the tensioning wheel 63 to rotate through the transmission member 10. In this embodiment, the transmission member 10 is a synchronous belt, realizing the linkage of the pasting wheel 7 and the tensioning wheel 63, improving the running coordination of the entire tooling, reducing the setting of power sources, and reducing costs. In other embodiments, the transmission member 10 can also be other structures.

[0057] In this embodiment, the tooling further includes an anti-backward mechanism 101 disposed on one side of the tape sticking wheel 7. The anti-backward mechanism 101 includes a limiting member 1011 and a tension spring. One end of the limiting member 1011 is disposed close to the tape sticking wheel 7, and the other end is mounted on the mounting plate 2. The target object passes through between the tape sticking wheel 7 and the limiting member 1011. One end of the tension spring is connected to the limiting member 1011, and the other end is fixed on the mounting plate 2. The tension spring is configured to tighten the limiting member 1011 so that the limiting member 1011 always abuts against the tape sticking wheel 7. When the taping is completed and the tape sticking wheel 7 leaves the target position, the anti-backward mechanism 101 will be closely attached to the tape sticking wheel 7 due to the action of the tension spring, preventing the position from shifting during cutting by personnel and facilitating cutting by personnel. Moreover, since the anti-backward mechanism 101 will be closely attached to the tape sticking wheel 7 due to the action of the tension spring, the position where the tape starting end is fixed at the tape sticking wheel 7 is not likely to change, which is beneficial for the next taping.

[0058] In summary, the working process of the composite base paper excluding the sticking tooling shown in this embodiment is as follows: First, install the required tape on the tape reel. The tape is composed of a base paper and an adhesive layer laminated thereto. At the same time, install the sticking object on the sticking object reel, ensuring that the tape reel and the sticking object reel are respectively located on both sides of the operating rod, and the position of the sticking object reel is such that the sticking object is close to the adhesive layer of the tape. The sticking object sequentially passes through the first guiding holes of the first guiding member, and the tape sequentially passes through the second guiding holes of the second guiding member. The sticking object and the tape enter between the first pressing wheel and the second pressing wheel together. By adjusting the connecting plate, the second pressing wheel is closely abutted against the first pressing wheel. When the sticking object and the tape pass through the two pressing wheels, under the action of the pressing wheels, the sticking object and the adhesive layer of the tape are closely laminated and connected. After passing through the lamination mechanism, the tape and the sticking object enter the separation mechanism. After passing through the conveying wheel, the base paper and the adhesive layer start to separate. The separated base paper passes through between the tensioning wheel and the separating wheel. The tensioning wheel and the separating wheel are closely attached and arranged. The tensioning wheel can drive the separating wheel to rotate, ensuring that the base paper maintains a certain tension during the conveying process and stably performing the separation operation. The target object formed by the connection between the adhesive layer and the sticking object then sequentially bypasses the first guiding wheel, the second guiding wheel, and the third guiding wheel, and under their guidance, moves towards the tape sticking wheel. During use, the end of the target object passing through the tape sticking wheel is adhered to the target position, and then the tape sticking wheel rotates, thereby driving the tensioning wheel to rotate through the transmission member to realize the automatic separation of the base paper.

[0059] The above is only a specific embodiment of the present application. Any improvement made on the premise of the present application's concept is regarded as the protection scope of the present application.

Claims

1. A composite bottom paper exclusion pasting tooling, characterized in that Comprising: Operating rod; Mounting plate, connected to the end of the operating rod; Tape reel, detachably mounted on the operating rod for providing tape, the tape including a base paper and an adhesive layer laminated to the base paper; Covering object reel, detachably mounted on the operating rod and located on both sides of the operating rod respectively with the tape reel, for providing covering objects, the covering object reel being configured such that the covering objects are arranged close to the adhesive layer; Laminating mechanism, mounted on the mounting plate, capable of laminating and connecting the passed covering objects with the adhesive layer of the tape; Separation mechanism, located at the rear end of the laminating mechanism, capable of separating the base paper of the tape passing through the laminating mechanism from the adhesive layer to form a target object with the adhesive layer connected to the covering object; Tape sticking wheel, rotatably mounted on the mounting plate and located at the rear end of the base paper discharging mechanism, with the target object closely attached to the tape sticking wheel.

2. The composite bottom paper excluding pasting tooling according to claim 1, characterized in that The laminating mechanism includes a first pressing wheel rotatably mounted on the mounting plate and a second pressing wheel adapted to and rotatable with the first pressing wheel, and the covering object and the tape both pass between the first pressing wheel and the second pressing wheel.

3. The laminating bottom paper excluding laminating tooling according to claim 2, wherein The laminating mechanism further includes a connecting plate, a first rotating shaft and a second rotating shaft provided at both ends of the connecting plate, the connecting plate is connected to the mounting plate through the first rotating shaft, the second pressing wheel is connected to the connecting plate through the second rotating shaft, and the connecting plate can drive the second pressing wheel to move relative to the first pressing wheel to abut against or separate from the first pressing wheel.

4. The composite bottom paper excluding pasting tooling according to claim 1, wherein The separation mechanism includes a conveying wheel, a separating wheel, a tensioning wheel arranged in sequence from front to back, and a first guiding wheel located above the separating wheel, the tensioning wheel is closely attached to the separating wheel and the tensioning wheel can drive the separating wheel to rotate; The base paper of the tape passing through the conveying wheel is separated from the adhesive layer, and the base paper passes between the tensioning wheel and the separating wheel, and the target object is arranged around the first guiding wheel and the tape sticking wheel in sequence.

5. The laminating bottom paper excluding laminating tooling according to claim 4, characterized in that A strip-shaped groove is provided on the mounting plate in the front-back direction; The separating wheel is mounted in the strip-shaped groove through a mounting block, the mounting block is adapted to the strip-shaped groove and can move in the strip-shaped groove to approach or move away from the tensioning wheel.

6. The laminating bottom paper excluding laminating tooling according to claim 4, wherein The tooling further includes a transmission member connecting the tape sticking wheel and the tensioning wheel, and the tape sticking wheel drives the tensioning wheel to rotate through the transmission member.

7. The laminating bottom paper excluding laminating tooling according to claim 6, characterized in that, The transmission member is a synchronous belt.

8. The composite bottom paper excluding pasting tooling according to claim 1, wherein The tooling further includes an anti-backward mechanism provided on one side of the tape sticking wheel, the anti-backward mechanism includes a limiting member and a tension spring, one end of the limiting member is arranged close to the tape sticking wheel, and the other end is mounted on the mounting plate, and the target object passes between the tape sticking wheel and the limiting member; one end of the tension spring is connected to the limiting member, and the other end is fixed on the mounting plate, and the tension spring is configured to tension the limiting member so that the limiting member always abuts against the tape sticking wheel.

9. The laminating bottom paper excluding lamination tooling according to claim 2, characterized in that The tooling further includes a first guide member and a second guide member disposed at the front end of the laminating mechanism. The first guide member includes a first guide hole, and the second guide member includes a second guide hole. The covering is sequentially passed through the first guide hole and between the first pressing wheel and the second pressing wheel, and the tape is sequentially passed through the second guide hole and between the first pressing wheel and the second pressing wheel.

10. The laminating bottom paper excluding laminating tooling according to claim 9, wherein The first guide member includes an opening communicating with the first guide hole; The first guide member includes a first protruding portion and a second protruding portion disposed opposite to each other. The opening is located between the bottom of the first protruding portion and the top of the second protruding portion, and at least part of the bottom of the first protruding portion and the top of the second protruding portion coincide in the horizontal direction.

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