Bottom cover adsorption device

By designing the bottom cover adsorption device, the combination of lifting and magnetic suction parts is used to solve the problem of the bottom cover stacking and jam between the conveyor belts, improving production efficiency and reducing material losses.

CN222573636UActive Publication Date: 2025-03-07HEILONGJIANG FEIHE DAIRY CO LTD +4
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Patent Information

Application Number
CN202420673459.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-02
Publication Date
2025-03-07
Estimated Expiration
2034-04-02

AI Technical Summary

Technical Problem

In the prior art, the bottom cover is prone to stack when transported between conveyor belts, resulting in jamming in the sterilization channel, reducing production efficiency and causing material loss.

Method used

A bottom cover adsorption device is designed, including a mounting frame, a lift and an adsorption assembly. The lifting member is arranged liftably on the mounting frame, and the adsorption assembly is composed of a frame and a magnetic suction member. The position of the magnetic suction member is adjusted by adjusting the height of the lifting member, and the bottom cover is adsorbed and separated.

Benefits of technology

Effectively avoid the problems of bottom cover stacking and jamming, improve production efficiency and reduce material losses.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a bottom cover adsorption device, which comprises a mounting frame, a bottom cover adsorption device and a bottom cover adsorption device, the lifting part is arranged on the mounting frame in a lifting manner; the adsorption assembly comprises a frame and a magnetic adsorption part, the frame is arranged below the mounting frame and connected with the lower end of the lifting part, the magnetic adsorption part is arranged in the frame, and the lower surface of the frame is a bottom cover adsorption surface. According to the technical scheme provided by the invention, the problems that the production efficiency is influenced and the material loss is caused due to the fact that the bottom covers are overlapped in the conveying belt and the overlapped covers are clamped in the channel when being conveyed to the sterilization channel in the prior art can be solved.
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Description

Technical Field

[0001] The utility model relates to the technical field of conveyor belt equipment, in particular to a bottom cover adsorption device. Background Art

[0002] At present, the bottom cover and container of the milk powder can need to be transported by a conveyor belt after production. After transportation, the bottom cover needs to be sterilized, and then the bottom cover and the container are sealed, so that the milk powder can can be produced to meet people's usage needs.

[0003] In the related art, the bottom cover is transported by two adjacent conveyor belts with a height difference between the two conveyor belts. The bottom cover is transported from one conveyor belt to the other conveyor belt. After being transported by the conveyor belts, the bottom cover is transported to a sterilization channel for sterilization.

[0004] However, in the related art, the bottom covers are transported from one conveyor belt to another. Due to the height difference between the two conveyor belts, the bottom covers may overlap. When transported to the sterilization channel, multiple covers are stacked together and get stuck in the channel when entering the sterilization channel, resulting in reduced production efficiency and material loss. Utility Model Content

[0005] The utility model provides a bottom cover adsorption device to solve the problem in the related art that the bottom covers may overlap in a conveyor belt and may get stuck in a sterilization channel when being transported to the channel, thereby affecting production efficiency and causing material loss.

[0006] The utility model provides a bottom cover adsorption device, which comprises: a mounting frame, which has a conveyor connecting portion; a lifting member, which is liftably arranged on the mounting frame; an adsorption component, which comprises a frame and a magnetic member, wherein the frame is arranged below the mounting frame and connected to the lower end of the lifting member, the magnetic member is arranged in the frame, and the lower surface of the frame is the bottom cover adsorption surface.

[0007] Furthermore, the lifting component includes a lifting frame and a lifting screw rod. The lifting frame can be slidably arranged on the mounting frame. The lifting screw rod is passed through the lifting frame and the mounting frame. The lifting screw rod can be rotatably arranged on the lifting frame and is limitedly matched with the lifting frame in the vertical direction. A nut is fixedly arranged on the mounting frame, and the lifting screw rod is threadably matched with the nut.

[0008] Furthermore, the lifting frame includes a first plate body and a guide rod. The first plate body is arranged above the mounting frame. The upper end of the guide rod is fixedly connected to the first plate body. The lower end of the guide rod can be slidably passed through the mounting frame and connected to the frame. The lifting screw rod is rotatably arranged on the first plate body.

[0009] Furthermore, the bottom cover adsorption device also includes a detection member for detecting the moving distance of the lifting screw rod, and the detection member is arranged on the lifting frame.

[0010] Furthermore, the detection part includes a digital display, which includes a shell and a rotating drum. The shell is connected to the first plate body, the rotating drum is rotatably arranged on the shell and cooperates with the shell along the vertical limit, the rotation axis of the rotating drum coincides with the rotation axis of the lifting screw rod, the bottom cover adsorption device also includes a top screw, and a through hole is also arranged on the rotating drum. The top screw is passed through the through hole and abuts against the lifting screw rod to make the rotating drum and the lifting screw rod abut each other, and a display screen displaying numerical values ​​is arranged on the shell.

[0011] Furthermore, an adjusting nut is provided at the upper end of the lifting screw rod, the adjusting nut is welded to the lifting screw rod, and an outer side wall of the adjusting nut has a tool adjusting portion.

[0012] Furthermore, the mounting frame includes a fixed rod, a support frame and a second plate body, the conveyor connection part is arranged at the lower end of the fixed rod, the first end of the support frame is connected to the upper end of the fixed rod, the second end of the support frame extends in a direction away from the fixed rod, the support frame is connected to the second plate body, the lifting member is passed through the second plate body, and the frame is located below the second plate body.

[0013] Furthermore, the bottom cover adsorption device also includes a detection component, which includes a sensor for detecting the bottom cover, an audible and visual alarm, and a power supply. The sensor is arranged on the frame, the sensor is signal-connected to the audible and visual alarm, and the power supply is electrically connected to the sensor and the audible and visual alarm respectively.

[0014] Furthermore, the frame includes a box body, and an opening for placing the magnetic attraction member is provided on the left side and / or the right side of the box body.

[0015] Furthermore, the box body is made of stainless steel.

[0016] According to the technical solution of the utility model, the bottom cover adsorption device includes a mounting frame, a lifting member and an adsorption assembly. The mounting frame is connected to the conveyor through a conveyor connection part, thereby fixing the mounting frame, and the lifting member is arranged on the mounting frame in a liftable manner, thereby enabling the lifting member to be lifted and moved relative to the mounting frame. In order to handle overlapping, an adsorption assembly is provided, and a frame in the adsorption assembly is provided below the mounting frame and connected to the lower end of the lifting member. A magnetic member is provided in the frame, and when the lifting member is lifted and lowered relative to the mounting frame, the frame equipped with the magnetic member can be lifted and lowered, thereby adjusting the height position of the magnetic member, that is, the relative height between the magnetic member and the conveyor belt, so that the overlapping problem can be effectively handled, ensuring that only one bottom cover can enter the sterilization channel. Moreover, when multiple bottom covers overlap on the conveyor belt, by adjusting the height of the lifting member relative to the conveyor belt, the closer the magnetic member is to the conveyor belt, the stronger the magnetic field is, and more bottom covers can be adsorbed; the farther the magnetic member is from the conveyor belt, the weaker the magnetic field is, and fewer bottom covers can be adsorbed. By adjusting the height of the lifting member, when overlapping occurs, the magnetic member can adsorb all bottom covers except the bottommost bottom cover, avoiding overlapping, and thus preventing the bottom covers from being stuck in the sterilization channel, thereby improving production efficiency and avoiding material loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of the bottom cover adsorption device provided by an embodiment of the utility model is shown;

[0019] Figure 2 It shows a schematic structural diagram of a mounting frame of a bottom cover adsorption device provided by an embodiment of the utility model;

[0020] Figure 3 A schematic structural diagram of an adsorption assembly of a bottom cover adsorption device provided in an embodiment of the utility model is shown.

[0021] The above drawings include the following reference numerals:

[0022] 10. Mounting frame; 11. Fixing rod; 12. Support frame; 13. Second plate;

[0023] 20. lifting member; 21. lifting frame; 211. first plate; 212. guide rod; 22. lifting screw rod; 23. adjusting nut;

[0024] 30. adsorption component; 31. frame; 311. box; 32. magnetic attraction component;

[0025] 40. detection member; 41. digital display; 411. housing; 412. rotating drum; 413. top screw;

[0026] 50. Detection component; 51. Sensor. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0028] like Figures 1 to 3 As shown, an embodiment of the utility model provides a bottom cover adsorption device, which includes a mounting frame 10, a lifting member 20 and an adsorption assembly 30. The mounting frame 10 has a conveyor connection portion, the lifting member 20 can be lifted and lowered on the mounting frame 10, the adsorption assembly 30 includes a frame 31 and a magnetic member 32, the frame 31 is arranged below the mounting frame 10 and connected to the lower end of the lifting member 20, the magnetic member 32 is arranged in the frame 31, and the lower surface of the frame 31 is the bottom cover adsorption surface.

[0029] The bottom cover adsorption device provided in this embodiment is applied, and the bottom cover adsorption device includes a mounting frame 10, a lifting member 20 and an adsorption assembly 30. The mounting frame 10 is connected to the conveyor through a conveyor connection part, so as to fix the mounting frame 10, and the lifting member 20 is arranged on the mounting frame 10 in a liftable manner, so as to enable the lifting member 20 to be lifted and moved relative to the mounting frame 10. In order to handle the overlapping, an adsorption assembly 30 is arranged, and a frame 31 in the adsorption assembly 30 is arranged below the mounting frame 10 and connected to the lower end of the lifting member 20, and a magnetic member 32 is arranged in the frame 31, so as to be able to lift and lower the lifting member 20 relative to the mounting frame 10, and the frame 31 equipped with the magnetic member 32 can be lifted and lowered, so as to adjust the height position of the magnetic member 32, that is, the relative height between the magnetic member 32 and the conveyor belt, so as to facilitate the effective handling of the overlapping problem and ensure that only one bottom cover can enter the sterilization channel. Furthermore, when multiple bottom covers overlap on the conveyor belt, by adjusting the height of the lifting member 20 relative to the conveyor belt, the closer the magnetic member 32 is to the conveyor belt, the stronger the magnetic field is, and more bottom covers can be adsorbed; the farther the magnetic member 32 is from the conveyor belt, the weaker the magnetic field is, and fewer bottom covers can be adsorbed. By adjusting the height of the lifting member 20, when overlapping occurs, the magnetic member 32 can adsorb all bottom covers except the bottommost bottom cover, avoiding overlapping, and further preventing the bottom covers from being stuck in the sterilization channel, thereby improving production efficiency and avoiding material loss.

[0030] like Figures 1 to 3 As shown, the lifting member 20 includes a lifting frame 21 and a lifting screw rod 22. The lifting frame 21 is slidably arranged on the mounting frame 10. The lifting screw rod 22 is penetrated by the lifting frame 21 and the mounting frame 10. The lifting screw rod 22 is rotatably arranged on the lifting frame 21 and is limitedly matched with the lifting frame 21 in the vertical direction. A nut is fixedly arranged on the mounting frame 10, and the lifting screw rod 22 is threadedly matched with the nut. By adopting the above structure, by setting the lifting frame 21, the lifting frame 21 can be slidably set on the mounting frame 10, and the lifting screw rod 22 is penetrated through the lifting frame 21 and the mounting frame 10, and then by rotating the lifting screw rod 22, it can be limited and matched with the lifting frame 21, so that the lifting screw rod 22 only rotates relative to the lifting frame 21 and does not move relative to the lifting frame 21. A nut is provided on the mounting frame 10, and the lifting screw rod 22 is threadedly matched with the nut. In this way, when the lifting screw rod 22 is lifted relative to the mounting frame 10, the lifting frame 21 can be driven to move together with the lifting screw rod 22, so that the control method is simple and the structural reliability of the lifting member 20 is improved.

[0031] like Figures 1 to 3As shown, the lifting frame 21 includes a first plate 211 and a guide rod 212. The first plate 211 is arranged above the mounting frame 10. The upper end of the guide rod 212 is fixedly connected to the first plate 211. The lower end of the guide rod 212 is slidably arranged in the mounting frame 10 and connected to the frame 31. The lifting screw 22 is rotatably arranged on the first plate 211. With the above structure, by arranging the first plate 211 and the guide rod 212, the first plate 211 is arranged above the mounting frame 10, the upper end of the guide rod 212 is connected and fixed to the first plate 211, and the lower end of the guide rod 212 is connected to the frame 31. When the lifting screw 22 is rotatably arranged on the first plate 211, it can drive the first plate 211, the guide rod 212 and the frame 31 to be lifted and lowered at the same time, so as to facilitate the adjustment of the height of the magnetic suction member 32.

[0032] like Figure 1 As shown, the bottom cover adsorption device further includes a detection member 40 for detecting the moving distance of the lifting screw 22, and the detection member 40 is disposed on the lifting frame 21. With the above structure, by disposing the detection member 40 on the lifting frame 21, the moving distance of the lifting screw 22 is detected by the detection member 40, thereby facilitating the detection of the position of the lifting screw 22.

[0033] like Figure 1As shown, the detection member 40 includes a digital display 41, and the digital display 41 includes a shell 411 and a rotating drum 412. The shell 411 is connected to the first plate 211. The rotating drum 412 is rotatably arranged on the shell 411 and cooperates with the shell 411 along the vertical limit. The rotation axis of the rotating drum 412 coincides with the rotation axis of the lifting screw rod 22. The bottom cover adsorption device also includes a top screw 413. The rotating drum 412 is also provided with a through hole. The top screw 413 is passed through the through hole and abuts against the lifting screw rod 22 so that the rotating drum 412 and the lifting screw rod 22 abut. The shell 411 is provided with a display screen for displaying numerical values. With the above structure, by setting the digital display 41, it is convenient to record the rising position of the lifting screw rod 22, and then it is convenient to adjust the height position. The digital display 41 includes a shell 411 and a rotating drum 412. The rotating axis of the rotating drum 412 coincides with the rotating axis of the lifting screw 22, and the through hole of the rotating drum 412 is penetrated by the top screw 413 to abut against the lifting screw 22, so that when the lifting screw 22 rotates, the rotating drum 412 can be driven to rotate. The digital display 41 is provided with a display screen for displaying numbers. When the rotating drum 412 rotates, the numbers in the digital display 41 change accordingly, so that under the action of the digital display 41, when the lifting screw 22 rotates, the rotating drum 412 can be driven to rotate. Under the action of the top screw, the rotating drum 412 and the lifting screw 22 can be fixed and rotated together with the lifting screw 22, and under the action of the shell 411, the first plate body 211 is limited and matched, so that the first plate body 211 moves with the lifting screw 22, so that it is convenient to record the position of the lifting screw 22 under the action of the digital display 41.

[0034] like Figure 1 As shown, an adjusting nut 23 is provided at the upper end of the lifting screw 22, and the adjusting nut 23 is welded to the lifting screw 22, and the outer wall of the adjusting nut 23 has a tool adjustment portion. With the above structure, by providing the adjusting nut 23, the adjusting nut 23 is welded to the lifting screw 22, so that the adjusting nut 23 can be rotated by the tool adjustment portion, thereby ensuring that the control method of the lifting screw 22 is simple.

[0035] like Figure 1 and Figure 2As shown, the mounting frame 10 includes a fixing rod 11, a support frame 12 and a second plate body 13, the conveyor connection portion is arranged at the lower end of the fixing rod 11, the first end of the support frame 12 is connected to the upper end of the fixing rod 11, the second end of the support frame 12 extends in a direction away from the fixing rod 11, the support frame 12 is connected to the second plate body 13, the lifting member 20 is passed through the second plate body 13, and the frame 31 is located below the second plate body 13. With the above structure, it is convenient to connect and fix with the conveyor by setting the fixing rod 11, and the support frame 12 is connected to the fixing rod 11, and the support frame 12 is connected to the second plate body 13, and the lifting member 20 is passed through the second plate body 13, so that the lifting member 20 can slide relative to the second plate body 13, so that it is convenient to fix the second plate body 13, and the assembly method is simple, and it is convenient to assemble and fix the mounting frame 10.

[0036] like Figure 1 As shown, the bottom cover adsorption device also includes a detection component 50, and the detection component 50 includes a sensor 51 for detecting the bottom cover, an audible and visual alarm, and a power supply. The sensor 51 is arranged on the frame 31, and the sensor 51 is connected to the audible and visual alarm signal, and the power supply is electrically connected to the sensor 51 and the audible and visual alarm respectively. With the above structure, by setting the detection component 50, the sensor 51 in the detection component 50 can detect whether the bottom cover is adsorbed on the magnetic suction component 32. When the bottom cover is detected on the adsorption component 30, the sensor 51 transmits a signal to the audible and visual alarm, and the audible and visual alarm works under the action of the power supply. This can serve as a warning to the staff and improve the structural reliability of the bottom cover adsorption device.

[0037] like Figure 1 and Figure 3 As shown, the frame 31 includes a box body 311, and the left side and / or right side of the box body 311 is provided with an opening for placing the magnetic attraction member 32. With the above structure, by providing the box body 311, the left side and / or right side of the box body 311 is provided with an opening, so that the magnetic attraction member 32 is conveniently placed, and the lifting frame 21 is conveniently connected and fixed to the box body 311.

[0038] In this embodiment, the box body 311 is made of stainless steel. With the above structure, by setting the box body 311 to be made of stainless steel, it is easy to process and manufacture the box body 311, and it is also easy to replace the magnetic member 32. When the magnetic member 32 absorbs the bottom cover, it can avoid the problem of debris caused by the collision between the bottom cover and the magnetic member 32 or the box body 311.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0041] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0042] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0043] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0044] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A bottom cover adsorption device, characterized in that: The bottom cover adsorption device comprises: A mounting frame (10), the mounting frame (10) having a conveyor connection portion; A lifting member (20) is liftably disposed on the mounting frame (10); The adsorption assembly (30) comprises a frame (31) and a magnetic attraction member (32); the frame (31) is arranged below the mounting frame (10) and connected to the lower end of the lifting member (20); the magnetic attraction member (32) is arranged inside the frame (31); and the lower surface of the frame (31) is a bottom cover adsorption surface.

2. The bottom cover adsorption device according to claim 1, characterized in that: The lifting member (20) comprises a lifting frame (21) and a lifting screw (22); the lifting frame (21) is slidably arranged on the mounting frame (10); the lifting screw (22) penetrates the lifting frame (21) and the mounting frame (10); the lifting screw (22) is rotatably arranged on the lifting frame (21) and is limitedly matched with the lifting frame (21) in the vertical direction; a nut is fixedly arranged on the mounting frame (10); the lifting screw (22) is threadably matched with the nut.

3. The bottom cover adsorption device according to claim 2, characterized in that: The lifting frame (21) comprises a first plate body (211) and a guide rod (212); the first plate body (211) is arranged above the mounting frame (10); the upper end of the guide rod (212) is fixedly connected to the first plate body (211); the lower end of the guide rod (212) is slidably inserted into the mounting frame (10) and connected to the frame (31); the lifting screw rod (22) is rotatably arranged on the first plate body (211).

4. The bottom cover adsorption device according to claim 3, characterized in that: The bottom cover adsorption device also includes a detection member (40) for detecting the moving distance of the lifting screw rod (22); the detection member (40) is arranged on the lifting frame (21).

5. The bottom cover adsorption device according to claim 4, characterized in that: The detection member (40) comprises a digital display (41), and the digital display (41) comprises a shell (411) and a rotating drum (412). The shell (411) is connected to the first plate (211). The rotating drum (412) is rotatably arranged on the shell (411) and cooperates with the shell (411) along the vertical limit direction. The rotation axis of the rotating drum (412) coincides with the rotation axis of the lifting screw rod (22). The bottom cover adsorption device also comprises a top screw (413). The rotating drum (412) is also provided with a through hole. The top screw (413) is passed through the through hole and abuts against the lifting screw rod (22) so that the rotating drum (412) and the lifting screw rod (22) abut each other. The shell (411) is provided with a display screen for displaying numerical values.

6. The bottom cover adsorption device according to claim 2, characterized in that: An adjusting nut (23) is provided at the upper end of the lifting screw rod (22), the adjusting nut (23) is welded to the lifting screw rod (22), and the outer side wall of the adjusting nut (23) has a tool adjusting portion.

7. The bottom cover adsorption device according to any one of claims 1 to 6, characterized in that: The mounting frame (10) comprises a fixing rod (11), a supporting frame (12) and a second plate body (13); the conveyor connecting portion is arranged at the lower end of the fixing rod (11); the first end of the supporting frame (12) is connected to the upper end of the fixing rod (11); the second end of the supporting frame (12) extends in a direction away from the fixing rod (11); the supporting frame (12) is connected to the second plate body (13); the lifting member (20) is passed through the second plate body (13); and the frame (31) is located below the second plate body (13).

8. The bottom cover adsorption device according to any one of claims 1 to 6, characterized in that: The bottom cover adsorption device further comprises a detection component (50), the detection component (50) comprising a sensor (51) for detecting the bottom cover, an audible and visual alarm, and a power supply, the sensor (51) being arranged on the frame (31), the sensor (51) being signal-connected to the audible and visual alarm, and the power supply being electrically connected to the sensor (51) and the audible and visual alarm, respectively.

9. The bottom cover adsorption device according to any one of claims 1 to 6, characterized in that: The frame (31) comprises a box body (311), and an opening for placing the magnetic attraction member (32) is provided on the left side and / or the right side of the box body (311).

10. The bottom cover adsorption device according to claim 9, characterized in that: The box body (311) is made of stainless steel.