1. A honeycomb auxiliary tensioning mechanism for hot breaking of a glue film for solar wing forming is characterized by comprising a supporting frame (1), a supporting base (2), a transverse sliding block assembly (3), a longitudinal sliding block assembly (4), a transverse feeding assembly (5), a longitudinal feeding assembly (6) and a plurality of honeycomb core clamping assemblies (7);

the supporting frame (1) is arranged on the supporting base (2), the transverse sliding block assembly (3) and the longitudinal sliding block assembly (4) are arranged on the supporting frame (1), and the honeycomb core clamping assemblies (7) are uniformly arranged on the transverse sliding block assembly (3) and the longitudinal sliding block assembly (4);

the honeycomb core clamping assembly (7) is transversely slid on the supporting frame (1) through the transverse sliding block assembly (3), and the honeycomb core clamping assembly (7) is longitudinally slid on the supporting frame (1) through the longitudinal sliding block assembly (4);

the transverse feeding assembly (5) controls the sliding and fixing of the honeycomb core clamping assembly (7) through the transverse sliding block assembly (3), and the longitudinal feeding assembly (6) controls the sliding and fixing of the honeycomb core clamping assembly (7) through the longitudinal sliding block assembly (4).

2. The solar wing forming glue film hot-breaking honeycomb auxiliary tensioning mechanism is characterized in that the beam assembly comprises a transverse linear guide rail (301) and a transverse sliding support (302), wherein the transverse linear guide rail (301) is arranged on the supporting frame (1), and the transverse sliding support (302) is arranged on the transverse linear guide rail (301) in a sliding manner;

the transverse feeding assembly (5) is arranged on the transverse sliding support (302), and the honeycomb core clamping assembly (7) is arranged on the transverse sliding support (302).

3. The solar wing forming glue film hot-breaking honeycomb auxiliary tensioning mechanism is characterized in that the transverse feeding assembly (5) comprises a first fixing plate (501), a first push plate (502), a first bolt (503) and a first rotating handle (504);

the first fixing plate (501) is arranged on the supporting frame (1), and the first push plate (502) is arranged on the transverse sliding support (302);

the first bolt (503) is arranged on the first fixing plate (501) in a threaded penetrating mode, one end of the first bolt (503) is arranged on the first push plate (502) in a rotating mode, and the first rotating handle (504) is fixedly arranged at one end, far away from the first push plate (502), of the first bolt (503).

4. The solar wing forming glue film hot-breaking honeycomb auxiliary tensioning mechanism is characterized in that the first fixing plate (501) is detachably arranged on the supporting frame (1), and the first push plate (502) is detachably arranged on the transverse sliding support (302).

5. The solar wing forming glue film hot-breaking honeycomb auxiliary tensioning mechanism is characterized in that the longitudinal beam sliding block assembly (4) comprises a longitudinal linear guide rail (401) and a longitudinal sliding support (402), wherein the longitudinal linear guide rail (401) is fixedly arranged on the supporting frame (1), and the longitudinal sliding support (402) is slidably arranged on the longitudinal linear guide rail (401);

the longitudinal feeding assembly (6) is arranged on the longitudinal sliding support (402), and the honeycomb core clamping assembly is connected and arranged on the longitudinal sliding support (402).

6. The solar wing forming glue film hot-breaking honeycomb auxiliary tensioning mechanism is characterized in that the longitudinal feeding assembly (6) comprises a second fixing plate (601), a second push plate (602), a second bolt (603) and a second rotating handle (604);

the second fixed plate (601) is arranged on the supporting frame (1), and the second push plate (602) is arranged on the longitudinal sliding support (402);

the second bolt (603) is arranged on the second fixing plate (601) in a threaded penetrating mode, one end of the second bolt (603) is rotatably arranged on the second push plate (602), and the second rotating handle (604) is fixedly arranged at one end, far away from the first push plate (502), of the first bolt (503).

7. The solar wing forming glue film hot-breaking honeycomb auxiliary tensioning mechanism is characterized in that the second fixing plate (601) is detachably arranged on the supporting frame (1), and the second push plate (602) is detachably arranged on the longitudinal sliding support (402).

8. The solar wing forming glue film hot-breaking honeycomb auxiliary tensioning mechanism is characterized in that the honeycomb core clamping assembly (7) comprises an upper base (701), a lower base (702) and a honeycomb positioning pin (703);

the upper base (701) is arranged on the lower base (702), the honeycomb positioning pin (703) is arranged on the upper base (701), and the lower base (702) is arranged on the transverse sliding block assembly (3) and the longitudinal sliding block assembly (4);

the lower base (702) is used for placing the honeycomb core (8), and the honeycomb positioning pin (703) is used for positioning the honeycomb core (8) on the lower base (702).

9. The solar wing forming glue film hot-breaking honeycomb auxiliary tensioning mechanism is characterized in that the honeycomb core clamping assembly (7) further comprises a bolt (704), a first adjusting nut (705), a bolt support (706), a compression spring (707), a second adjusting nut (708) and an adjusting rod (709);

one end of the bolt (704) penetrates into the lower base (702) and the upper base (701) to realize the connection between the lower base (702) and the upper base (701), and the first adjusting nut (705) is arranged at one end, far away from the lower base (702), of the bolt (704) in a threaded manner;

the bolt support (706) is fixedly arranged on the lower base (702), one end of the adjusting rod (709) is fixedly arranged on the bolt support (706), and the second adjusting nut (708) is rotatably arranged at one end of the adjusting rod (709) far away from the bolt support (706) in a threaded manner;

two ends of the compression spring (707) are respectively fixedly arranged on the first adjusting nut (705) and the second adjusting nut (708).

10. The solar wing forming glue film thermal-breaking honeycomb auxiliary tensioning mechanism is characterized in that a plurality of honeycomb core clamping assemblies (7) are arranged on the transverse sliding block assembly (3) and the longitudinal sliding block assembly (4) in a sliding mode, and the honeycomb core clamping assemblies (7) can achieve self-locking on the transverse sliding block assembly (3) and the longitudinal sliding block assembly (4).

Background

The honeycomb sandwich structure is widely applied to a solar wing rigid substrate due to excellent material performances such as specific stiffness, specific strength and the like, and mainly comprises an upper skin layer, a lower skin layer, a honeycomb core layer and a pre-cured adhesive film, wherein the upper skin layer, the lower skin layer, the honeycomb core layer and the honeycomb core layer are formed by gluing, an adhesive film is paved on the end face of the honeycomb core at present, then the honeycomb core layer is placed in a special hot-breaking device, and holes are broken at a certain temperature and wind speed pressure, so that the end faces of six edges of each honeycomb core layer are uniformly covered with the pre-cured adhesive film.

Because the honeycomb core grids have the specification size (6mm multiplied by 0.03mm), the wall thickness is 0.03mm, and almost no rigidity exists, a bolt and a nut are adopted to fix one honeycomb core grid in the honeycomb core clamping in the prior stage, so that the honeycomb core in the area near the bolt fixing is deformed in a large area, and under the adaptive thermal failure parameter under the specific honeycomb specification, the defects that the adhesive film is in hollow contact with the honeycomb core grids or is accumulated on the end face of the honeycomb core in a corrugated shape, the adhesive is easy to peel off, the adhesive film is distributed unevenly, and the like easily occur. Meanwhile, deformation of the honeycomb core lattices has adverse effects on the overall mechanical performance of the whole solar wing material, in addition, the whole honeycomb core needs to be screwed in a large number of screws for clamping, and after the glue film is subjected to honeycomb, the whole honeycomb core needs to be disassembled, so that the labor intensity is increased, and the production efficiency is reduced.

The patent with publication number CN104494276B discloses a cellular core end face gridding glue applying process based on adhesive film thermal cracking, which comprises the steps of tensioning the end face of a cellular core by designing a special tool, instantaneously heating the upper surface of an adhesive film flatly attached to the end face of the cellular core by a linear heating device and a hot air blowing device with a linear air outlet, softening the adhesive film by heating and sinking the adhesive film into the cellular core grid under the action of gravity, and simultaneously applying high-pressure hot air to the adhesive film along the axial direction of cellular core grid holes in a reverse direction to expand, crack, shrink and uniformly gather on the edge end face of the cellular core grid so as to realize the direct conversion of the adhesive film from the cellular core state to the cellular grid state. The requirements of large-area honeycomb core gridding gluing on small change of chemical state and uniform physical distribution state of the adhesive are met. Said invention has the defects of easy peeling of adhesive and non-uniform distribution of adhesive film.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a honeycomb auxiliary tensioning mechanism for hot breaking of an adhesive film for forming a solar wing.

The invention provides a honeycomb auxiliary tensioning mechanism for hot breaking of a glue film for forming a solar wing, which comprises a supporting frame, a supporting base, a transverse sliding block assembly, a longitudinal sliding block assembly, a transverse feeding assembly, a longitudinal feeding assembly and a plurality of honeycomb core clamping assemblies;

the supporting frame is arranged on the supporting base, the transverse sliding block assembly and the longitudinal sliding block assembly are arranged on the supporting frame, and the honeycomb core clamping assemblies are uniformly arranged on the transverse sliding block assembly and the longitudinal sliding block assembly;

the honeycomb core clamping assembly realizes transverse sliding on the supporting frame through the transverse sliding block assembly, and the honeycomb core clamping assembly realizes longitudinal sliding on the supporting frame through the longitudinal sliding block assembly;

the transverse feeding assembly controls the honeycomb core clamping assembly to slide and fix through the transverse sliding block assembly, and the longitudinal feeding assembly controls the honeycomb core clamping assembly to slide and fix through the longitudinal sliding block assembly.

Preferably, the beam assembly comprises a transverse linear guide rail and a transverse sliding support, the transverse linear guide rail is arranged on the support frame, and the transverse sliding support is arranged on the transverse linear guide rail in a sliding manner;

the transverse feeding assembly is arranged on the transverse sliding support, and the honeycomb core clamping assembly is arranged on the transverse sliding support.

Preferably, the transverse feeding assembly comprises a first fixing plate, a first push plate, a first bolt and a first rotating handle;

the first fixing plate is arranged on the supporting frame, and the first push plate is arranged on the transverse sliding support;

first bolt screw thread runs through the setting on the first fixed plate, the one end of first bolt is rotated and is set up on the first push pedal, first rotation handle is fixed to be set up first bolt is kept away from the one end of first push pedal.

Preferably, the first fixing plate is detachably arranged on the supporting frame, and the first push plate is detachably arranged on the transverse sliding support.

Preferably, the longitudinal beam sliding block assembly comprises a longitudinal linear guide rail and a longitudinal sliding support, the longitudinal linear guide rail is fixedly arranged on the supporting frame, and the longitudinal sliding support is arranged on the longitudinal linear guide rail in a sliding manner;

the longitudinal feeding assembly is arranged on the longitudinal sliding support, and the honeycomb core clamping assembly is connected and arranged on the longitudinal sliding support.

Preferably, the longitudinal feeding assembly comprises a second fixing plate, a second push plate, a second bolt and a second rotating handle;

the second fixing plate is arranged on the supporting frame, and the second push plate is arranged on the longitudinal sliding support;

the second bolt thread penetrates through the second fixing plate, one end of the second bolt is rotatably arranged on the second push plate, and the second rotating handle is fixedly arranged at one end, far away from the first push plate, of the first bolt.

Preferably, the second fixing plate is detachably arranged on the supporting frame, and the second pushing plate is detachably arranged on the longitudinal sliding support.

Preferably, the honeycomb core clamping assembly comprises an upper base, a lower base and a honeycomb positioning pin;

the upper base is arranged on the lower base, the honeycomb positioning pin is arranged on the upper base, and the lower base is arranged on the transverse sliding block assembly and the longitudinal sliding block assembly;

the lower base is used for placing the honeycomb core, and the honeycomb positioning pin is used for positioning the honeycomb core on the lower base.

Preferably, the honeycomb core clamping assembly further comprises a bolt, a first adjusting nut, a bolt support, a compression spring, a second adjusting nut and an adjusting rod;

one end of the bolt penetrates into the lower base and the upper base to realize the connection of the lower base and the upper base, and the first adjusting nut is rotatably arranged at one end of the bolt far away from the lower base in a threaded manner;

the bolt support is fixedly arranged on the lower base, one end of the adjusting rod is fixedly arranged on the bolt support, and the second adjusting nut is rotatably arranged at one end of the adjusting rod, which is far away from the bolt support;

and two ends of the compression spring are respectively and fixedly arranged on the first adjusting nut and the second adjusting nut.

Preferably, a plurality of the honeycomb core clamping assemblies are arranged on the transverse sliding block assembly and the longitudinal sliding block assembly in a sliding mode, and the honeycomb core clamping assemblies can achieve self-locking on the transverse sliding block assembly and the longitudinal sliding block assembly.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the profiling grouped positioning pins are designed according to the appearance of the honeycomb core, so that the deformation caused by the concentration of tensile stress when an adhesive film is pasted on the honeycomb core before thermal breakage can be effectively reduced;

2. the positioning pin can realize quick clamping through the pressure spring, can effectively reduce the labor intensity and improve the working efficiency;

3. the transverse and longitudinal clamping rods can move on the supporting frame, the size of the inner cavity is adjusted, the clamping device can adapt to clamping of honeycombs with different specifications and sizes, the honeycombs can quickly reach a preset clamping position through sliding connection and then are fed through the screw rod nuts, and uniform and stable pre-tensioning clamping of the honeycomb cores can be realized.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic view of the overall structure of a honeycomb auxiliary tensioning mechanism for hot breaking of an adhesive film for forming a solar wing according to the present invention;

FIG. 2 is a schematic structural view of a honeycomb core clamping assembly of the present invention;

FIG. 3 is a schematic structural view of the honeycomb core clamping assembly after clamping the honeycomb core according to the present invention.

The figures show that:

1. a support frame; 2. a support base; 3. a transverse slider assembly; 301. a transverse linear guide rail; 302. a transverse sliding support; 4. a longitudinal slide block assembly; 401. a longitudinal linear guide rail; 402. a longitudinal sliding support; 5. a transverse feeding assembly; 501. a first fixing plate; 502. a first push plate; 503. a first bolt; 504. a first rotating handle; 6. a longitudinal feed assembly; 601. a second fixing plate; 602. a second push plate; 603. a second bolt; 604. A second rotating handle; 7. a honeycomb core clamping assembly; 701. an upper base; 702. a lower base; 703. a honeycomb positioning pin; 704. a bolt; 705. a first adjusting nut; 706. a bolt support; 707. a compression spring; 708. a second adjusting nut; 709. adjusting a rod; 8. a honeycomb core.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.

As shown in fig. 1, the invention provides a honeycomb auxiliary tensioning mechanism for hot breaking of a glue film for solar wing molding, which comprises a supporting frame 1, a supporting base 2, a transverse sliding block assembly 3, a longitudinal sliding block assembly 4, a transverse feeding assembly 5, a longitudinal feeding assembly 6 and a plurality of honeycomb core clamping assemblies 7.

Support frame 1 sets up on supporting base 2, and horizontal sliding block set 3 and vertical sliding block set 4 set up on support frame 1, and a plurality of honeycomb core clamping subassembly 7 evenly sets up on horizontal sliding block set 3 and vertical sliding block set 4, in the in-service use, can set up the number of honeycomb core clamping subassembly 7 according to the size of honeycomb core. The honeycomb core clamping assembly 7 can slide transversely on the supporting frame 1 through the transverse sliding block assembly 3, and the honeycomb core clamping assembly 7 can slide longitudinally on the supporting frame 1 through the longitudinal sliding block assembly 4. The two ends of the longitudinal beam realize reciprocating linear motion through the sliding components fixed on the supporting frame 1.

The transverse feeding assembly 5 controls the sliding and fixing of the honeycomb core clamping assembly 7 through the transverse sliding block assembly 3, and the longitudinal feeding assembly 6 controls the sliding and fixing of the honeycomb core clamping assembly 7 through the longitudinal sliding block assembly 4.

According to the specification and the size of the honeycomb core 8 in a free state, the transverse sliding block component 3 and the longitudinal sliding block component 4 are manually moved to the position close to the size position of the honeycomb core 8, then the peripheral edge of the honeycomb core 8 is clamped and fixed through the uniformly distributed honeycomb core clamping components 7, and finally the whole honeycomb core hole is in a regular hexagon through the transverse feeding component 5 and the longitudinal feeding component 6.

The crossbeam subassembly includes that horizontal linear guide 301 and horizontal sliding support 302 constitute, and horizontal linear guide 301 sets up on braced frame 1, and horizontal sliding support 302 slides and sets up on horizontal linear guide 301, and transverse feed subassembly 5 sets up on horizontal sliding support 302, and honeycomb core clamping subassembly 7 sets up on horizontal sliding support 302. The transverse feeding assembly 5 comprises a first fixing plate 501, a first push plate 502, a first bolt 503 and a first rotating handle 504, wherein the first fixing plate 501 is arranged on the supporting frame 1, the first push plate 502 is arranged on the transverse sliding support 302, the first bolt 503 is arranged on the first fixing plate 501 in a threaded manner, one end of the first bolt 503 is rotatably arranged on the first push plate 502, and the first rotating handle 504 is fixedly arranged at one end of the first bolt 503 far away from the first push plate 502.

The longitudinal beam assembly comprises a longitudinal linear guide rail 401 and a longitudinal sliding support 402, the longitudinal linear guide rail 401 is fixedly arranged on the support frame 1, the longitudinal sliding support 402 is arranged on the longitudinal linear guide rail 401 in a sliding mode, the longitudinal feeding assembly 6 is arranged on the longitudinal sliding support 402, and the honeycomb core clamping assembly 7 is connected and arranged on the longitudinal sliding support 402. The longitudinal feeding assembly 6 comprises a second fixing plate 601, a second push plate 602, a second bolt 603 and a second rotating handle 604, wherein the second fixing plate 601 is disposed on the supporting frame 1, the second push plate 602 is disposed on the longitudinal sliding support 402, the second bolt 603 is disposed on the second fixing plate 601 in a threaded manner, one end of the second bolt 603 is rotatably disposed on the second push plate 602, and the second rotating handle 604 is fixedly disposed at one end of the first bolt 503 away from the first push plate 502.

The first fixing plate 501 is arranged on the supporting frame 1 in a manner of an insertion block and an insertion slot, and the first push plate 502 is arranged on the transverse sliding support 302 in a manner of an insertion block and an insertion slot. The second fixing plate 601 is disposed on the supporting frame 1 in a manner of an insert and a slot, and the second pushing plate 602 is disposed on the longitudinal sliding support 402 in a manner of an insert and a slot.

As shown in fig. 2, the honeycomb core clamping assembly 7 includes an upper base 701, a lower base 702, and a honeycomb positioning pin 703, wherein the upper base 701 is disposed on the lower base 702, the honeycomb positioning pin 703 is disposed on the upper base 701, and the lower base 702 is disposed on the transverse slider assembly 3 and the longitudinal slider assembly 4. The lower base 702 is used for placing the honeycomb core 8, and the honeycomb positioning pins 703 are used for positioning the honeycomb core 8 on the lower base 702. The honeycomb positioning pins 703 are designed in consideration of the pitch according to the specification of the honeycomb core 8, and are connected to the upper base 701 by countersunk set screws, so that the number of the honeycomb positioning pins 703 can be increased or decreased as appropriate.

The lower base 702 of the longitudinal slide support 402 is moved downward relative to the lower base 702 of the transverse slide support 302 to maintain the transverse honeycomb core holder assembly 7 and the longitudinal honeycomb core holder assembly 7 in a single plane. The transverse feeding assembly 5 and the longitudinal feeding assembly 6 realize slow and smooth movement of the honeycomb core clamping assembly 7 through rotating the handle.

The honeycomb core 8 is placed into the lower base 702 and is grouped with the positioning pins, then the upper base 701 is matched with the cylindrical holes through the chamfered edges, and the bolt penetrates through the side holes of the upper base 702 and the lower base 702 to realize that the whole honeycomb core clamping component 7 is fixed.

The honeycomb core clamping assembly 7 further comprises a bolt 704, a first adjusting nut 705, a bolt 704 support, a compression spring 707, a second adjusting nut 708 and an adjusting rod 709. One end of a bolt 704 penetrates into the lower base 702 and the upper base 701 to realize the connection between the lower base 702 and the upper base 701, a first adjusting nut 705 is arranged at one end of the bolt 704 far away from the lower base 702 in a threaded rotation manner, a bolt 704 support is fixedly arranged on the lower base 702, one end of an adjusting rod 709 is fixedly arranged on the bolt 704 support, a second adjusting nut 708 is arranged at one end of the adjusting rod 709 far away from the bolt 704 support in a threaded rotation manner, and two ends of a compression spring 707 are respectively and fixedly arranged on the first adjusting nut 705 and the second adjusting nut 708. The base of the bolt 704 is connected with the lower base 702 through a screw, the base of the bolt 704 corresponds to the hole of the bolt 704, so that the bolt 704 can horizontally reciprocate, and one end of the bolt 704 is provided with two adjusting nuts, so that the honeycomb core clamping assembly 7 is locked and released through a compression spring 707.

A plurality of honeycomb core clamping components 7 are arranged on the transverse sliding block component 3 and the longitudinal sliding block component 4 in a sliding mode, and the honeycomb core clamping components 7 can achieve self-locking on the transverse sliding block component 3 and the longitudinal sliding block component 4.

Some parts of each component in fig. 1 are standard common parts and will not be described in detail.

The functions and implementations of the various parts are further explained below:

taking the dimension of a honeycomb core cell of 6mm multiplied by 0.03mm after the honeycomb laminated block is stretched and the dimension of a whole honeycomb core 8 in a free state of 1300mm multiplied by 2000m multiplied by 22mm as an example, a honeycomb positioning pin 703 is designed, specifically, along the W direction of a honeycomb, the width of the positioning pin is 0.5mm of the deviation of two sides of the inner cavity dimension of a single honeycomb core cell, along the L direction of the honeycomb, four side surfaces of the honeycomb positioning pin 703 are 0.2mm of the deviation of two sides of the inner cavity dimension of the single honeycomb core cell, and the height dimension of the positioning pin is 11(-0.2 to-0.3) mm.

The dimensions of the rest parts in the honeycomb core clamping assembly 7 are determined by taking the honeycomb positioning pin 703 as a reference under the principle that the strength is satisfied and the interference with other assemblies is avoided. In this example, the single fixing position is determined as five grouped honeycomb positioning pins 703, which can be increased or decreased according to the actual application.

Put whole braced frame 1 on supporting base 2, according to honeycomb core 8 specification and dimension manual movement horizontal longeron slider assembly 2 to near honeycomb core 8 size position 1300mm, crossbeam subassembly 2 to honeycomb core 8 size 2000mm, then with honeycomb core clamping subassembly 7 lower base 702 along the vertical and horizontal direction equipartition, adopt the sliding base that has the locking setting, make honeycomb core clamping subassembly 7 fixed in the optional position on horizontal sliding support 302 and vertical sliding support 402. Then, the honeycomb core 8 is respectively installed in the lower bases 702 (as shown in fig. 3), the bolts 704 are moved backwards and are placed in the upper bases 701, and under the action of spring force, the bolts 704 rebound, and the honeycomb core clamping assembly 7 is locked.

Finally, the first rotating handle 504 and the second rotating handle 604 are rotated to enable the transverse sliding component 3 and the longitudinal sliding component 4 to move and stretch the honeycomb cores until the geometric center of the whole honeycomb core is not obviously concave due to self gravity and the single honeycomb core is neat.

The profiling grouped positioning pins are designed according to the appearance of the honeycomb core, deformation caused by concentrated tensioning stress when a glue film is pasted on the honeycomb core before thermal damage can be effectively reduced, the positioning pins can be quickly clamped through the compression springs, labor intensity can be effectively reduced, working efficiency is improved, in addition, the transverse and longitudinal clamping rods can move on the supporting frame 1, the size of an inner cavity is adjusted, clamping of honeycombs with different specifications and sizes can be adapted, through sliding connection, feeding can be quickly achieved through the lead screw nuts after preset clamping positions, and uniform and stable pre-tensioning clamping of the honeycomb core can be realized.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.