1. A glass sheet insertion rack system, comprising:

the glass bearing device comprises a glass bearing layer frame (1), wherein the glass bearing layer frame (1) is constructed into a U-shaped frame, the U-shaped frame is horizontally positioned, and a bearing plane for placing a glass sheet material (100) is formed on the upper surface of the U-shaped frame;

a conveying mechanism (2), wherein the conveying mechanism (2) is positioned on one side of the U-shaped frame where the opening end is positioned and comprises a supporting table (21) and a conveying belt (22) for horizontally conveying the glass plate (100) from back to front, the conveying belt (22) is installed on the supporting table (21), and the front end part of the conveying belt (22) is positioned to be located in the U-shaped frame in a projection in the vertical direction; and

the lifting mechanism (3) comprises a lifting table (31) and a driving device (32), one of the glass bearing layer frame (1) and the supporting table (21) is arranged on the lifting table (31), the other of the glass bearing layer frame (1) and the supporting table (21) is fixedly arranged relative to the lifting table, and the lifting table (31) is driven by the driving device (32) to move vertically so as to change the height difference between the bearing plane and the upper surface of the conveyor belt (22) in the vertical direction.

2. Glass panel insertion system according to claim 1, characterized in that the glass carrier layer (1) further comprises a support arm (13) connected to the U-shaped frame, the upper surface of the support arm (13) being coplanar with the carrying plane, and an escape (17) being formed between the support arm (13) and two mutually parallel support arms of the U-shaped frame for escaping the conveyor belt (22).

3. The glass panel insertion system according to claim 2, wherein the number of the conveyor belts (22) is plural, and the plural conveyor belts (22) are arranged in parallel and at intervals.

4. Glass pane rack system according to claim 2, characterized in that the conveying means (2) comprise a motor (23) and a synchronizing bar (24) in transmission connection with the output shaft of the motor (23), the driving wheel of the conveyor belt (22) being mounted coaxially on the synchronizing bar (24).

5. The rack system of glass sheets as claimed in claim 1, wherein the glass carrying device comprises a fixed plate (18), the number of the glass carrying layer racks (1) is plural, a plurality of the glass carrying layer racks (1) are stacked in sequence along a vertical direction, the plural glass carrying layer racks (1) are installed together through the fixed plate (18), wherein a gap is provided between two adjacent glass carrying layer racks (1) for placing the glass sheets (100).

6. A glass panel racking system according to any of claims 1-5 wherein said glass carrier rack comprises a first support arm (11) and a second support arm (12) connected at an angle to the end of said first support arm (11), said first support arm (11) and two of said second support arms (12) being configured as said U-shaped frame,

the glass bearing layer frame is characterized in that a first protrusion (14) parallel to the first bearing arm (11) in extension is arranged on the first bearing arm (11), a second protrusion (15) parallel to the second bearing arm (12) in extension is arranged on the second bearing arm (12), so that the glass plates (100) are limited on the glass bearing layer frame (1) through the first protrusion (14) and the second protrusion (15), wherein the upper surface of the first protrusion (14) is flush with the upper surface of the second protrusion (15).

7. Glass web insertion system according to claim 6, characterized in that an opening (16) is provided between the two ends of the first projection (14) and the second projection (15).

8. Glass sheet insertion system according to claim 1, wherein the support table (21) is provided with a glass positioning block (25).

9. Glass sheet insertion system according to claim 1, wherein the lifting mechanism (3) comprises a lifting table frame (33), a guide sleeve (34) fixed to the lifting table frame (33), and a guide rod (35) extending in the vertical direction and having one end fixed to the lifting table (31) and the other end slidably fitted to the guide sleeve (34).

10. Glass web insertion system according to claim 1, characterized in that the conveyor (22) is configured as a brush conveyor.

Background

The flat panel display device generally uses glass as its protective cover plate material, but with the rapid development of flexible display technology, the traditional cover plate glass gradually fails to meet the market demand. According to the research, the glass is a brittle material, but when the thickness of the glass is less than 0.1mm, the glass has the flexibility, and the thinner the thickness, the better the bending performance. Generally, glass having a thickness of less than 0.1mm is referred to as ultra-thin flexible glass. The ultrathin flexible glass has the characteristics of high transparency, heat resistance stability, high hardness and the like, and therefore, can be used as a material of a protective cover plate of flat panel display equipment.

In production, ultra-thin flexible glass needs to be chemically tempered in order to improve its strength, hardness and bending properties. During chemical toughening, the ultra-thin flexible glass is vertically placed on a toughening frame, the lower edge of the ultra-thin flexible glass is supported by a rack arranged on the bottom side of the toughening frame, and the upper edge of the ultra-thin flexible glass is stopped by a rack arranged on the upper side of the toughening frame, so that the ultra-thin flexible glass is clamped between two racks, and then the toughening frame and the ultra-thin flexible glass thereon are immersed into potassium nitrate molten salt at 350-440 ℃ for ion exchange for 20-50 minutes.

In the related art, ultra-thin flexible glass to be tempered is generally loaded on a tempering rack by manually grasping the edge of the glass or sucking the surface of the glass by an automated suction cup. However, due to the flexibility of the ultrathin flexible glass, the edge of the glass is grabbed manually or the glass surface is sucked by an automatic sucker, so that the glass is bent and deformed, the glass cannot be inserted into a tempering frame, and the defects that the glass is scratched, broken and the like in the frame inserting process are easily caused.

Disclosure of Invention

The utility model aims at providing a glass panel's frame system of inserting, this frame system of inserting can improve glass panel's frame efficiency of inserting, prevents that glass panel from taking place to damage at the frame in-process of inserting.

In order to achieve the above object, the present disclosure provides an insertion rack system of a glass plate, the insertion rack system comprising: the glass bearing device comprises a glass bearing layer frame, wherein the glass bearing layer frame is constructed into a U-shaped frame, the U-shaped frame is horizontally positioned, and a bearing plane for placing a glass sheet is formed on the upper surface of the U-shaped frame; a conveying mechanism which is positioned on one side of the U-shaped frame where the opening end is positioned and comprises a supporting table and a conveyor belt for horizontally conveying the glass plate material from back to front, wherein the conveyor belt is arranged on the supporting table, and the front end part of the conveyor belt is positioned to be positioned in the U-shaped frame in a projection in the vertical direction; and the lifting mechanism comprises a lifting platform and a driving device, one of the glass bearing layer frame and the supporting platform is arranged on the lifting platform, the other of the glass bearing layer frame and the supporting platform is fixedly arranged relative to the lifting platform, and the lifting platform is driven by the driving device to move vertically so as to change the height difference between the bearing plane and the upper surface of the conveying belt in the vertical direction.

Optionally, the glass carrier further includes a support arm connected to the U-shaped frame, an upper surface of the support arm is coplanar with the carrier plane, and an avoiding portion is formed between the support arm and two parallel carrier arms of the U-shaped frame to avoid the conveyor belt.

Optionally, the number of the conveyor belts is multiple, and the multiple conveyor belts are parallel to each other and arranged at intervals.

Optionally, the conveying mechanism comprises a motor and a synchronizing rod in transmission connection with an output shaft of the motor, and the driving wheel of the conveyor belt is coaxially mounted on the synchronizing rod.

Optionally, the glass bearing device includes a fixing plate, the number of the glass bearing layer frames is multiple, the multiple glass bearing layer frames are stacked in sequence along a vertical direction, the multiple glass bearing layer frames are mounted together through the fixing plate, and a gap is provided between two adjacent glass bearing layer frames to place the glass plate.

Optionally, the glass carrier layer frame includes a first support arm and a second support arm connected to an end of the first support arm at an angle, the first support arm and two of the second support arms are configured as the U-shaped frame, a first protrusion parallel to the first support arm is provided on the first support arm, a second protrusion parallel to the second support arm is provided on the second support arm, so that the glass plate is limited to the glass carrier layer frame by the first protrusion and the second protrusion, wherein the upper surface of the first protrusion and the upper surface of the second protrusion are flush.

Optionally, an opening is provided between both ends of the first protrusion and the second protrusion.

Optionally, a glass positioning block is arranged on the support table.

Optionally, the lifting mechanism includes a lifting platform frame, a guide sleeve and a guide rod, the guide sleeve is fixedly disposed on the lifting platform frame, the guide rod extends along the vertical direction, one end of the guide rod is fixed to the lifting platform, and the other end of the guide rod is in sliding fit with the guide sleeve.

Optionally, the conveyor belt is configured as a brush conveyor belt.

Through the technical scheme, the glass plate inserting frame system horizontally conveys the glass plates through the conveyor belt when inserting the frame, so that the glass plate can be horizontally inserted into the glass bearing layer frame, the glass plate can be prevented from being damaged due to excessive bending deformation in the frame inserting process, when the glass plate is conveyed in place by the conveyor belt, the lifting platform moves vertically under the driving of the driving device to change the height difference of the upper surfaces of the bearing platform and the conveyor belt in the vertical direction, so that the glass plate leaves the conveyor belt and is positioned on the glass bearing layer frame to complete the frame inserting operation of the glass plate, thus, during the process of transferring the glass sheet from the conveyor to the glass carrier, there is no friction between the glass sheet and the glass carrier, therefore, the damage such as scratches on the surface of the glass plate can be reduced or even avoided by the connection mode. In addition, the mode of inserting the frame with carrying out glass plate through conveying mechanism and elevating system mutual cooperation replaces artifical transport glass plate and operates the mode of accomplishing glass plate and inserting the frame, not only satisfies the automatic requirement of inserting the frame of glass plate, can also improve glass plate's the frame efficiency of inserting, helps improving glass plate's tempering yields.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic front view of a rack system for glass sheets provided by an embodiment of the present disclosure;

FIG. 2 is a schematic top view of a rack system for glass sheets according to an embodiment of the present disclosure;

FIG. 3 is a schematic perspective view of a glass carrier in an insertion rack system for glass sheets according to an embodiment of the present disclosure, wherein the glass sheets are loaded on the glass carrier;

fig. 4 is a schematic perspective view of a glass carrier layer in a glass carrier device of an insertion frame system for glass plates according to an embodiment of the present disclosure.

Description of the reference numerals

1-glass bearing layer frame; 11-a first bearing arm; 12-a second bearing arm; 13-a support arm; 14-a first projection; 15-a second protrusion; 16-opening; 17-an avoidance portion; 18-a fixed plate; 2-a conveying mechanism; 21-supporting table; 22-a conveyor belt; 23-a motor; 24-a synchronization rod; 25-a glass positioning block; 3-a lifting mechanism; 31-a lifting table; 32-a drive device; 33-a lifter frame; 34-a guide sleeve; 35-a guide bar; 100-glass plate.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, the use of the terms of orientation such as "upper and lower" generally refer to "upper and lower" relative to each other in the direction of gravity when the respective components are in use, wherein the vertical direction corresponds to the direction of gravity. In addition, the terms "front and rear" used in the present disclosure are defined with reference to the conveying direction of the conveyor 22, and the conveying direction of the glass plate material 100 to the glass loading device is considered to be from the rear to the front, and in the drawings provided in the present disclosure, "front and rear" correspond to the left and right orientations in the drawings of fig. 1 and 2, respectively. Furthermore, the terms "first," "second," and the like, as used herein are intended to distinguish one element from another, and not necessarily to distinguish between order and importance. Furthermore, in the following description, when referring to the figures, the same reference numbers in different figures denote the same or similar elements, unless otherwise explained. The foregoing definitions are provided to illustrate and describe the present disclosure only and should not be construed to limit the present disclosure.

According to an embodiment of the present disclosure, referring to fig. 1 to 4, there is provided an insert rack system of a glass plate material, the insert rack system including: the glass bearing device comprises a glass bearing layer frame 1, wherein the glass bearing layer frame 1 is constructed into a U-shaped frame which is horizontally positioned and the upper surface of the U-shaped frame is formed with a bearing plane for placing a glass sheet material 100; a conveying mechanism 2, said conveying mechanism 2 being located at a side of the open end of said U-shaped frame and comprising a support table 21 and a conveyor belt 22 for horizontally conveying said glass panel 100 from back to front, such that, the glass sheets 100 are horizontally conveyed by the conveyor 22, to prevent the glass sheets 100 from being damaged by excessive bending deformation during the insertion process, wherein the conveyor belt 22 is mounted on the support table 21 and a front end portion of the conveyor belt 22 is positioned so that a projection in a vertical direction is located in the U-shaped frame (as shown in fig. 2), whereby, in the process of conveying the glass plate material 100, the glass plate material 100 is held by the conveyor belt 22, and the upper surface of the conveyor belt 22 is slightly higher than the bearing plane of the U-shaped frame, so that the frictional contact between the glass sheet material 100 and the U-shaped frame can be reduced, and the damage of scratches and the like on the surface of the glass sheet material 100 can be prevented or even avoided.

In addition, the rack inserting system for the glass plate further comprises an elevating mechanism 3, the elevating mechanism 3 comprises an elevating platform 31 and a driving device 32, one of the glass bearing layer rack 1 and the supporting platform 21 is arranged on the elevating platform 31, the other of the glass bearing layer rack 1 and the supporting platform 21 is fixedly arranged relative to the elevating platform 31, and the elevating platform 31 moves in a vertical direction under the driving of the driving device 32 so as to change the height difference between the bearing plane and the upper surface of the conveyor belt 22 in the vertical direction. When the glass plate material 100 is conveyed to the position by the conveyor belt 22, and at the time when a part of the glass plate material 100 exceeds the front end part of the conveyor belt 22 and a part of the glass plate material 100 is positioned on the conveyor belt 22, the glass plate material 100 is still in a horizontal state, the lifting platform 31 is driven by the driving device 32 to move vertically, and the height difference between the bearing platform and the upper surface of the conveyor belt 22 in the vertical direction is changed, so that the glass plate material 100 is separated from the conveyor belt 22 and positioned on the glass bearing layer frame 1, and the frame inserting operation of the glass plate material 100 is completed.

Through the technical scheme, the rack inserting system for the glass sheets provided by the present disclosure horizontally conveys the glass sheets 100 through the conveyor belt 22 when inserting the rack, so that the glass sheets 100 can be horizontally inserted into the glass carrier layer 1, the glass sheets 100 can be prevented from being damaged due to excessive bending deformation during the insertion process, when the glass plate material 100 is conveyed to the position by the conveyor belt 22, the lifting platform 31 is driven by the driving device 32 to move along the vertical direction, the height difference of the bearing platform and the upper surface of the conveyor belt 22 in the vertical direction is changed, so that the glass panel 100 is positioned on the glass carrier 1 away from the conveyor 22, completing the insertion of the glass panel 100, and thus, during the process of transferring the glass sheet material 100 from the conveyor belt 22 to the glass carrier 1, there is no friction between the glass sheet material 100 and the glass carrier 1, therefore, the damage such as scratches on the surface of the glass plate material 100 can be reduced or even avoided by the connection method. In addition, the mode of inserting the glass plate 100 into the rack through mutual cooperation of the conveying mechanism 2 and the lifting mechanism 3 replaces the mode of manually carrying the glass plate 100 and completing the inserting of the glass plate 100 into the rack, so that the requirement of automatically inserting the glass plate 100 into the rack is met, the inserting efficiency of the glass plate 100 can be improved, and the improvement of the toughening yield of the glass plate 100 is facilitated.

The rack inserting system provided by the present disclosure can be used for automatic rack inserting of ultra-thin flexible glass with a thickness of 0.025mm-0.06mm, and can also be used for glass sheets 100 with a thickness of more than 0.06mm, which is not particularly limited by the present disclosure.

In the specific embodiment provided by the present disclosure, the glass carrier rack 1 may further include a supporting arm 13 connected to the U-shaped frame, an upper surface of the supporting arm 13 is coplanar with the bearing plane, and as shown in fig. 2 to 4, the supporting arm 13 extends parallel to the second bearing arm 12 (see below) and is located between the two second bearing arms 12, so that when the glass sheet material 100 is located on the glass carrier rack 1, the supporting arm 13 can support the middle portion of the glass sheet material 100 to prevent the glass sheet material 100 from bending too much after the rack insertion. Further, in order to facilitate the arrangement of the conveyor belt 22, an escape portion 17 is formed between the support arm 13 and two support arms (i.e., a second support arm 12 described below) of the U-shaped frame, which are parallel to each other, to escape the conveyor belt 22, so that when the elevating table 31 is driven by the driving device 32 to move in the vertical direction, the front end portion of the conveyor belt 22 can pass through the escape portion 17 to transfer the glass sheet material 100 from the conveyor belt 22 to the glass carrier layer frame 1.

Wherein, according to operating condition's demand, the quantity of conveyer belt 22 can be a plurality of, and a plurality of conveyer belts 22 are parallel to each other and the interval sets up. In order to prevent the sag of the glass panel 100 when it is placed on the conveyor belts 22 from being excessively large, the distance between two adjacent conveyor belts 22 is configured such that: the sagging dimension of the glass on the conveyor belt 22 is smaller than the distance between the upper surface of the conveyor belt 22 and the bearing plane, so that the sagging part of the glass plate 100 does not come into frictional contact with the support arm 13 during the process of conveying the glass plate 100 by the conveyor belt 22, and the glass plate 100 can be prevented from being damaged by scratches and the like. In addition, the number of the conveyor belts 22 may be designed according to practical use, and is not limited to two, but may also be three, four, five, etc., and the disclosure does not specifically limit this.

In the specific embodiment provided by the present disclosure, referring to fig. 2, the conveying mechanism 2 includes a motor 23 and a synchronizing rod 24 in transmission connection with an output shaft of the motor 23, a driving wheel of the conveyor belt 22 is coaxially mounted on the synchronizing rod 24, and the motor 23 drives the synchronizing rod 24 to rotate so as to drive the driving wheel of the conveyor belt 22 to move, thereby driving the conveyor belt 22 to operate. In the case where the number of the conveyor belts 22 is plural, the driving wheels of the plural conveyor belts 22 are all coaxially mounted on the synchronizing bar 24, whereby it is possible to realize the synchronized operation of the plural conveyor belts 22 so that the glass plate material 100 is stationary with respect to the conveyor belts 22, preventing the glass plate material 100 from being positionally displaced on the conveyor belts 22. The synchronizing rod 24 may be in transmission connection with the output shaft of the motor 23 through a coupling, and may also be in transmission connection with the output shaft of the motor 23 through a transmission structure (such as a transmission gear, etc.), which is not particularly limited in this disclosure. In addition, the motor 23 may be a stepping motor 23 or a servo motor 23, which is not particularly limited by the present disclosure.

In actual production, in order to improve the efficiency of chemical tempering, a plurality of glass sheets 100 are usually chemically tempered at the same time, and therefore, in the embodiment provided by the present disclosure, the glass bearing device includes a fixing plate 18, the number of the glass bearing layer frames 1 is plural, a plurality of the glass bearing layer frames 1 are stacked in sequence in a vertical direction, the plurality of the glass bearing layer frames 1 are mounted together through the fixing plate 18, wherein a gap is provided between two adjacent glass bearing layer frames 1 to place the glass sheets 100. Therefore, the glass plates 100 are placed between the two adjacent glass bearing layer frames 1, and the glass plates 100 are limited by the two adjacent glass bearing layer frames 1 so as to prevent the glass plates 100 from being separated from the glass bearing device when chemical toughening is carried out. In the embodiment shown in fig. 1 and 3, the glass bearing device comprises ten glass bearing layers 1, and nine glass sheets 100 can be placed on the glass bearing layers 1, and the fixing plate 18 and the glass bearing layers 1 are mounted together by any suitable fasteners, such as screws, bolts, rivets, etc., wherein the number of the glass bearing layers 1 can be customized according to the requirements of users, and the disclosure is not limited thereto.

In the embodiment shown in fig. 1, the glass carrier 1 is arranged on a lifting table 31, the support table 21 of the conveying mechanism 2 is fixedly arranged relative to the lifting table 31, the lifting table 31 is driven by a driving device 32 to move vertically from bottom to top, in this case, the upper surface of the conveyor belt 22 is considered to be slightly higher than the bearing plane of the second glass carrier 1 from top to bottom in the initial state, when inserting the glass sheet 100 into the space between the first glass carrier 1 and the second glass carrier 1 from top to bottom, first, the conveyor belt 22 inserts the glass sheet 100 into the space between the first glass carrier 1 and the second glass carrier 1 from top to bottom, then, the driving device 32 drives the lifting table 31 to move vertically from bottom to top, so as to drive the plurality of glass carriers 1 to move upward together, so that the glass sheet 100 is separated from the conveyor belt 22 and located on the second glass carrier 1, when the driving device 32 drives the lifting table 31 to move vertically upward to position, that is, the upper surface of the conveyor belt 22 is slightly higher than the carrying platform of the third glass carrying layer rack 1 from top to bottom, and then the conveyor belt 22 conveys the next glass plate 100 to the space between the second glass carrying layer rack 1 and the third glass carrying layer rack 1, and the insertion of a plurality of glass plates 100 is completed in sequence in the same way. Wherein, the height of the lifting platform 31 rising each time is the height of the glass bearing layer frame 1 when being horizontally placed. In another embodiment, the support table 21 of the conveying mechanism 2 may be disposed on the lifting table 31, and the glass carrier rack 1 may be fixedly disposed with respect to the lifting table 31, which is not particularly limited by the present disclosure.

In the specific embodiment provided by the present disclosure, referring to fig. 3 and 4, the glass carrier 1 includes a first supporting arm 11 and a second supporting arm 12 connected to an end of the first supporting arm 11 at an angle, the first supporting arm 11 and two of the second supporting arms 12 are configured as the U-shaped frame, a first protrusion 14 extending parallel to the first supporting arm 11 is disposed on the first supporting arm 11, and a second protrusion 15 extending parallel to the second supporting arm 12 is disposed on the second supporting arm 12, so that the glass sheet 100 is limited to the glass carrier 1 by the first protrusion 14 and the second protrusion 15, thereby preventing the glass sheet 100 from falling off the glass carrier 1 during the operation of chemical tempering. Wherein the upper surface of the first protrusion 14 and the upper surface of the second protrusion 15 are flush, so that the plurality of glass carriers 1 can be kept horizontally oriented, and the glass sheet 100 can be kept horizontally when being placed on the glass carriers 1. Furthermore, the heights of the first protrusions 14 and the second protrusions 15 can be rationally designed according to the thickness of the glass web 100 so that the gap between two adjacent glass carrier layers 1 is suitable for inserting the glass web 100.

In the embodiment provided by the present disclosure, referring to fig. 3 and 4, an opening 16 is provided between both ends of the first protrusion 14 and the second protrusion 15 to facilitate the molten tempered liquid to exit the glass carrier 1.

In the embodiment provided by the present disclosure, referring to fig. 2, a glass positioning block 25 is disposed on the supporting table 21, and when the rack is inserted, an edge of the glass plate 100 is aligned with the glass positioning block 25 for positioning, so that when the glass plate 100 is conveyed to the glass carrier layer rack 1 via the conveyor belt 22, the glass plate 100 is located at the center of the first protrusion 14, so as to prevent the glass plate 100 from blocking the opening 16 due to position deviation and affecting the discharge of the molten tempered liquid.

In the specific embodiment provided by the present disclosure, referring to fig. 1, the lifting mechanism 3 includes a frame of the lifting table 31, a guide sleeve 34 and a guide rod 35, the guide sleeve 34 is fixedly disposed on the frame of the lifting table 31, the guide rod 35 extends along the vertical direction and has one end fixed to the lifting table 31 and the other end slidably engaged with the guide sleeve 34, the driving device 32 is fixedly disposed on the frame of the lifting table 31 and has a driving end fixedly connected to the lifting table 31, and the lifting table 31 is guided to move in the vertical direction by the guide sleeve 34 and the guide rod 35 engaged with each other to define a moving track of the lifting table 31. Wherein the driving device 32 may be configured as any suitable driving member such as a servo-lift cylinder, etc., and the disclosure is not particularly limited thereto.

In the embodiment provided by the present disclosure, the conveyor belt 22 may be configured as a brush conveyor belt 22, wherein the brush used by the brush conveyor belt 22 does not scratch the surface of the glass sheet material 100, which is beneficial for the insertion of the glass sheet material 100.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.