阅读说明：本技术 一种吻合器用钉制钉设备及制钉方法 (Nail making equipment and method for stapler ) 是由 黄洪昆 于 2020-12-09 设计创作，主要内容包括：本发明公开了一种吻合器用钉制钉设备及制钉方法,涉及制钉设备技术领域,其技术方案要点包括加工底箱,所述加工底箱的上侧表面固定连接有移动模板,所述移动模板的前后两端安装有液压杆,且加工底箱与液压杆之间构成固定连接,所述加工底箱的上侧右端固定连接有下料槽斗,所述移动模板的右侧表面固定连接有气杆,所述加工底箱的右侧底端固定连接有储存箱,所述加工底箱的前侧右端固定连接有原料端板。所述模具芯的底端开设有模具槽,且模具槽的贯穿于模具芯底侧表面,所述弹簧的外侧下端设置有下压端壳。该结构构能够在受到压力施加的同时,保护模具两端放置过度挤压而产生形变,外圈保护方式放置上端内部积灰,安装结构简单方便使用。(The invention discloses nail making equipment and a nail making method for an anastomat, and relates to the technical field of nail making equipment. The bottom of the die core is provided with a die groove, the die groove penetrates through the bottom surface of the die core, and the lower end of the outer side of the spring is provided with a pressing end shell. This structure can be when receiving pressure to exert, and the protection mould both ends are placed excessive extrusion and are produced deformation, and the inside deposition in upper end is placed to outer lane protection mode, and mounting structure is simple facilitates the use.)

1. The utility model provides a nail system nail equipment for anastomat, includes processing under casing (1), its characterized in that: the utility model discloses a processing bottom case, including processing bottom case (1), upside fixed surface is connected with movable mould board (2), hydraulic stem (3) are installed at both ends around movable mould board (2), and constitute fixed connection between processing bottom case (1) and hydraulic stem (3), the upper end fixedly connected with end of exerting pressure (4) of hydraulic stem (3), upside right-hand member fixedly connected with feed chute fill (7) of processing bottom case (1), the right side fixed surface of movable mould board (2) is connected with gas pole (6), the right side bottom fixedly connected with bin (10) of processing bottom case (1), the front side right-hand member fixedly connected with raw materials end plate (11) of processing bottom case (1).

2. The nail making equipment for the anastomat according to claim 1, wherein the edges of the front side and the rear side of the upper surface of the processing bottom box (1) are fixedly connected with buffer blocks (5), the front side and the rear side of the blanking groove hopper (7) are respectively provided with a template sliding groove (9), meanwhile, a sliding structure is promoted between the movable template (2) and the template sliding grooves (9), the right side of the buffer blocks (5) is provided with a movable rod groove (8), a connecting rod is arranged in the movable rod groove (8) and penetrates through the front side and the rear side of the movable template (2), the bottom surface of the movable template (2) is provided with a bearing fixing end (12), and the bearing fixing end (12) is connected with the processing bottom box (1) in a welding mode.

3. The nail making equipment for the anastomat according to the claim 2, characterized in that the bottom end of the bearing fixed end (12) is connected with a threaded rod (13), a rotating structure is formed between the bearing fixed end (12) and the threaded rod (13), a threaded rod gear (14) is fixed at the bottom end of the threaded rod (13), the threaded rod (13) and the threaded rod gear (14) are connected in a welding mode, a driving motor (15) is arranged on the inner side of the threaded rod gear (14), and the driving motor (15) and the processing bottom box (1) are connected in a threaded mode.

4. The nail making equipment for the anastomat according to claim 3, wherein a material pushing plate (16) is arranged right below the movable template (2), a material pushing groove (34) is formed in the upper surface of the material pushing plate (16), the material pushing groove (34) penetrates through the upper surface of the material pushing plate (16), a connecting end (35) is fixedly connected to the right side end of the material pushing plate (16), protruding strips are fixed to the front side and the rear side of the material pushing plate (16), a material pushing chute (18) is connected to the right side of the connecting end (35), a sliding structure is formed between the connecting end (35) and the material pushing chute (18), and the connecting end (35) is fixedly connected with the connecting rod in the movable rod groove (8).

5. The nail making equipment for the anastomat according to claim 4, wherein a feeding plate (17) is arranged right below the material pushing plate (16), strip grooves (31) are fixed to the front side and the rear side of the upper surface of the feeding plate (17), convex strips (32) are arranged on the inner sides of the strip grooves (31), the convex strips (32) are fixedly connected with the feeding plate (17), round material grooves (33) are formed in the upper surface of the convex strips (32), and two positions of the round material grooves (33) are formed in the convex strips (32).

6. The nail making equipment for the anastomat according to the claim 5, characterized in that the bottom end of the pressure applying end (4) is connected with a mounting plate (22), the mounting plate (22) is in threaded connection with the pressure applying end (4), the mounting plate (22) is provided with a threaded hole (23), the threaded hole (23) penetrates through the mounting plate (22), and the threaded hole (23) is connected with a threaded connector (24).

7. Nail-making device for staplers, as claimed in claim 6, wherein an external ring (25) is fixed to the bottom end of said threaded joint (24), the threaded joint (24) is fixedly connected with the outer ring (25), a spring (27) is arranged in the outer ring (25), and the outer ring (25) and the spring (27) form a sleeved connection, the bottom end of the threaded joint (24) is fixed with an inner column ring (26), the threaded joint (24) is fixedly connected with the inner column ring (26), a mold core (28) is arranged inside the bottom end of the inner column ring (26), the inner column ring (26) is fixedly connected with the mould core (28), the bottom end of the mould core (28) is provided with a mould groove (29), and the die groove (29) penetrates through the bottom surface of the die core (28), and the lower end of the outer side of the spring (27) is provided with a pressing end shell (30).

8. The nail making equipment for the anastomat according to claim 7, wherein a blanking channel (20) is arranged right below the blanking groove hopper (7), the blanking groove hopper (7) is in welded connection with the blanking channel (20), a storage chamber (21) is connected to the lower end of the blanking channel (20), a communicating structure is formed between the blanking channel (20) and the storage chamber (21), a material distributing channel (19) is arranged on the front side of the blanking channel (20), two rows of sheet materials are fixed inside the material distributing channel (19) for separation, two rows of holes are formed in the bottom side of the material distributing channel (19), a movable sliding plate is further mounted at the bottom end of the material distributing channel, and the sliding plate is connected with the right end of the material pushing plate (16) through a rope.

9. The nail making equipment for the anastomat according to the claim 8, characterized in that a bottom contact ring (36) is installed above the movable template (2), the bottom contact ring (36) penetrates through the movable template (2), an annular groove is formed in the upper side surface of the bottom contact ring (36), a lower mold ring (37) is fixedly connected to the upper end of the bottom contact ring (36), a communicating structure is formed by the bottom contact ring (36) and a lower mold ring (37) support, and an inner annular groove (38) is fixedly connected to the inner side of the lower mold ring (37).

Technical Field

The invention relates to the technical field of nail making equipment, in particular to nail making equipment and a nail making method for a stapler.

Background

The anastomat is the first stapler in the world and is used for gastrointestinal anastomosis for nearly a century, and the tube-type anastomat is not widely used for gastrointestinal surgery until 1978. Generally, the anastomat is divided into a disposable anastomat or a multi-use anastomat, an imported anastomat or a domestic anastomat. The anastomat is equipment used for replacing the traditional manual suture in medicine, is reliable in quality, convenient to use, tight and proper in tightness due to development of modern science and technology and improves manufacturing technology, particularly has the advantages of being quick in suture, simple and convenient to operate, few in side effects and operation complications and the like, enables a tumor operation which cannot be resected in the past to be resected by a focus, is the equipment used for replacing the manual suture in medicine, and is similar to a stapler in that a titanium nail is used for separating or anastomosing tissues according to a main working principle. According to different application ranges, the surgical stapler can be mainly divided into a skin stapler, a circular stapler for digestive tracts (esophagus, stomach and intestine and the like), a rectal stapler, a circular hemorrhoid stapler, a circumcision stapler, a blood vessel stapler, a hernia stapler, a lung cutting stapler and the like. The existing nail processing equipment for the anastomat also has the problems of difficult one-time forming of raw materials, long processing time and the like, and the invention provides a reasonable and effective production mode for producing the nail for the nail abutting seat of the anastomat to realize production.

Disclosure of Invention

In order to solve the problems in the background art, the invention aims to provide a nail making device and a nail making method for a stapler, which have the advantages of realizing processing production of nail making raw materials, realizing one-time forming processing of products and having better processing efficiency.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a nail system nail equipment for anastomat, includes the processing under casing, its characterized in that: the upside fixed surface of processing under casing is connected with the movable mould board, the hydraulic stem is installed at both ends around the movable mould board, and constitutes fixed connection between processing under casing and the hydraulic stem, the upper end fixedly connected with end of exerting pressure of hydraulic stem, the upside right-hand member fixedly connected with feed chute fill of processing under casing, the right side fixed surface of movable mould board is connected with the gas pole, the right side bottom fixedly connected with bin of processing under casing, the front side right-hand member fixedly connected with raw materials end plate of processing under casing.

As a further scheme of the invention: the edge fixedly connected with buffer block of both sides around processing under casing upper surface, the template spout has all been seted up to the front and back both sides of feed chute fill, promotes sliding structure altogether between movable mould board and the template spout simultaneously, the movable rod groove has been seted up on the right side of buffer block, the movable rod inslot is equipped with the connecting rod, the connecting rod run through in the front and back both sides of movable mould board, the movable mould board bottom surface is provided with the bearing solid end, and is welded connection between bearing solid end and the processing under casing.

As a further scheme of the invention: the bottom of the bearing fixing end is connected with a threaded rod, the bearing fixing end and the threaded rod form a rotating structure, a screw gear is fixed at the bottom of the threaded rod, the threaded rod is connected with the screw gear in a welding mode, a driving motor is arranged on the inner side of the screw gear, and the driving motor is in threaded connection with the machining bottom box.

As a further scheme of the invention: the material pushing device is characterized in that a material pushing plate is arranged under the movable template, a material pushing groove is formed in the upper surface of the material pushing plate and penetrates through the upper surface of the material pushing plate, a connecting end is fixedly connected to the right side end of the material pushing plate, protruding strips are fixed to the front side and the rear side of the material pushing plate, a material plate sliding groove is connected to the right side of the connecting end, a sliding structure is formed between the connecting end and the material plate sliding groove, and the connecting end is fixedly connected with the connecting rod in the movable rod groove.

As a further scheme of the invention: the material pushing plate is characterized in that a material feeding plate is arranged under the material pushing plate, strip grooves are fixed to the front side and the rear side of the upper surface of the material feeding plate, protruding strips are arranged on the inner sides of the strip grooves, the protruding strips are fixedly connected with the material feeding plate, material circular grooves are formed in the upper surface of the protruding strips, and the material circular grooves are arranged at two positions on the protruding strips.

As a further scheme of the invention: the bottom end of the pressing end is connected with a mounting plate, the mounting plate is in threaded connection with the pressing end, the mounting plate is provided with a threaded hole, the threaded hole penetrates through the inside of the mounting plate, and the threaded hole is connected with a threaded connector.

As a further scheme of the invention: the bottom end of the threaded joint is fixed with an outer ring, the threaded joint is fixedly connected with the outer ring, a spring is arranged inside the outer ring, the outer ring is sleeved with the spring, an inner column ring is fixed to the bottom end of the threaded joint, the threaded joint is fixedly connected with the inner column ring, a mold core is arranged inside the bottom end of the inner column ring, the inner column ring is fixedly connected with the mold core, a mold groove is formed in the bottom end of the mold core, the mold groove penetrates through the bottom side surface of the mold core, and a pressing end shell is arranged at the lower end of the outer side of the spring.

As a further scheme of the invention: the feeding device is characterized in that a feeding channel is arranged under the feeding groove hopper, the feeding groove hopper is in welded connection with the feeding channel, the lower end of the feeding channel is connected with a storage chamber, a communicating structure is formed between the feeding channel and the storage chamber, a material distributing channel is arranged on the front side of the feeding channel, two rows of sheet objects are fixed inside the material distributing channel and separated from each other, two rows of holes are formed in the bottom side of the material distributing channel, a movable sliding plate is further mounted at the bottom end of the material distributing channel, and the sliding plate is connected with the right end of the material pushing plate through a rope.

As a further scheme of the invention: the die comprises a movable die plate, a bottom contact ring, a lower die ring and a lower die ring support, wherein the bottom contact ring is arranged above the movable die plate and penetrates through the movable die plate, an annular groove is formed in the surface of the upper side of the bottom contact ring, the upper end of the bottom contact ring is fixedly connected with the lower die ring, the bottom contact ring and the lower die ring support form a communicating structure, and an inner annular groove is fixedly connected to the inner side of the lower die ring.

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

1. according to the invention, through processing the raw material end plate at the front side of the bottom box, pushing the raw material end plate to the left side and opening the internal structure, the raw materials which are uniform in shape and are cylindrical strips are put into the material distribution channel, when the air rod contracts to pull the movable template to move to the right side, the material pushing plate is driven to move rightwards, at the moment, under the action of rightwards moving of the material pushing plate, the sliding plate at the bottom opening of the material distribution channel slides rightwards through the rope, so that the internal raw materials fall into the material pushing groove of the material pushing plate, when the movable template is in an extended state of the air rod, the movable template moves leftwards, and then the material pushing plate is driven to move leftwards through the connecting rod, the structure realizes the functions of placing and automatic blanking of the raw materials through the linkage;

2. according to the invention, the material pushing plate pulls and combines the sliding plate at the bottom opening of the material distributing channel through the rope, the raw material falling into the material pushing groove moves leftwards to push the raw material to the convex strip on the material feeding plate to be matched with the material circular groove, when the material pushing plate moves leftwards to the upper part of the material feeding plate, the strip groove is matched with the convex long piece at the bottom side of the material pushing plate, the upper end connecting gear is driven to be meshed with the screw gear through the rotation of the driving motor, and the threaded rod at the lower end of the fixed end of the bearing is further driven to rotate;

3. according to the invention, when the threaded rod rotates, external threads are meshed with screw holes on the feeding plate and move upwards under the rotation action of the threaded rod, when the feeding plate moves upwards, the feeding plate gradually approaches to the pushing plate, the heights of the raised strips and the pushing grooves are kept consistent, raw materials are placed at the top end of the overall height of the pushing plate and then pushed upwards, and when the pushing plate is attached to the movable template, the pushing grooves are matched with the bottom side surface of the movable template. The mounting structure is simple and convenient to use;

4. according to the invention, when a hydraulic rod applies pressure downwards, a pressing end shell at the tail end is in contact with an inner annular groove of a movable template and is in contact with a buffer block in the pressing process, the pressing end shell is pressed by the pressure to extrude a spring in an outer ring, so that a mold core and a mold groove on the inner side of an inner cylindrical ring are gradually in contact with a lower mold ring and the inner annular groove, after the extrusion is completed, raw materials are positioned in the lower mold ring, the movable template moves rightwards along the template sliding groove to move the extruded raw materials to a blanking groove hopper, and then the raw materials reach a storage chamber in a storage box through a blanking channel.

Drawings

FIG. 1 is a schematic front perspective view of a nail making apparatus of the present invention;

FIG. 2 is a schematic view of a cross-sectional front view of the nail making apparatus of the present invention;

FIG. 3 is a schematic perspective view of a pressing end of the nail making apparatus of the present invention;

FIG. 4 is a schematic view of a screw joint structure of the nail making equipment of the present invention

FIG. 5 is a schematic view of a material loading plate structure of the nail making equipment of the present invention

FIG. 6 is a schematic view of the structure of the ejector plate of the nail making device of the present invention

Fig. 7 is an enlarged schematic view of the nail making apparatus of the present invention shown in fig. 1.

In the figure: 1. processing a bottom box; 2. moving the template; 3. a hydraulic lever; 4. a pressure applying end; 5. a buffer block; 6. a gas lever; 7. a blanking groove hopper; 8. a moving bar slot; 9. a template chute; 10. a storage tank; 11. a raw material end plate; 12. fixing the end of the bearing; 13. a threaded rod; 14. a screw gear; 15. a drive motor; 16. a material pushing plate; 17. feeding plates; 18. a flitch chute; 19. a material distributing channel; 20. a blanking channel; 21. a storage chamber; 22. mounting a plate; 23. a threaded hole; 24. a threaded joint; 25. an outer ring; 26. an inner cylindrical ring; 27. a spring; 28. a mold core; 29. a mold slot; 30. pressing down the end shell; 31. a strip groove; 32. a convex strip; 33. a material circular groove; 34. a material pushing groove; 35. a connecting end; 36. a bottom contact ring; 37. a lower die ring; 38. an inner ring groove.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings

Referring to fig. 1 to 7, in the embodiment of the invention, a nail making device for an anastomat comprises a processing bottom box 1, wherein a movable template 2 is fixedly connected to the upper side surface of the processing bottom box 1, hydraulic rods 3 are installed at the front end and the rear end of the movable template 2, the processing bottom box 1 is fixedly connected with the hydraulic rods 3, a pressing end 4 is fixedly connected to the upper ends of the hydraulic rods 3, a blanking groove hopper 7 is fixedly connected to the upper side right end of the processing bottom box 1, an air rod 6 is fixedly connected to the right side surface of the movable template 2, a storage box 10 is fixedly connected to the right side bottom end of the processing bottom box 1, and a raw material end plate 11 is fixedly connected to the front side right end of the.

In fig. 2, as a further aspect of the invention: the utility model discloses a quick-witted processing bottom case, including the processing bottom case 1, the front and back both sides edge fixedly connected with buffer block 5 of processing bottom case 1 upper surface, template spout 9 has all been seted up to the front and back both sides of feed chute fill 7, the short sliding structure altogether between 2 of movable mould board and the template spout 9 simultaneously, carriage release lever groove 8 has been seted up on the right side of buffer block 5, be equipped with the connecting rod in the carriage release lever groove 8, the connecting rod runs through in the front and back both sides of movable mould board 2, 2 bottom surfaces of movable mould board are provided with bearing solid end 12, and be welded.

In fig. 2, the bottom end of the bearing fixing end 12 is connected with a threaded rod 13, a rotating structure is formed between the bearing fixing end 12 and the threaded rod 13, a threaded rod gear 14 is fixed at the bottom end of the threaded rod 13, the threaded rod 13 and the threaded rod gear 14 are connected in a welding manner, a driving motor 15 is arranged on the inner side of the threaded rod gear 14, and the driving motor 15 is in threaded connection with the processing bottom box 1.

In fig. 6, a material pushing plate 16 is disposed under the movable die plate 2, a material pushing groove 34 is disposed on the upper surface of the material pushing plate 16, the material pushing groove 34 penetrates through the upper surface of the material pushing plate 16, a connecting end 35 is fixedly connected to the right side end of the material pushing plate 16, protruding strips are fixed to the front side and the rear side of the material pushing plate 16, a material plate chute 18 is connected to the right side of the connecting end 35, a sliding structure is formed between the connecting end 35 and the material plate chute 18, and connecting ends 35 at two ends of the material pushing plate 16 are fixedly connected to connecting rods in the movable rod chute 8.

In fig. 5, a feeding plate 17 is disposed right below the pushing plate 16, two front and rear sides of an upper surface of the feeding plate 17 are fixed with strip grooves 31, a convex strip 32 is disposed inside the strip groove 31, the convex strip 32 is fixedly connected with the feeding plate 17, a material circular groove 33 is disposed on an upper surface of the convex strip 32, and two positions of the material circular groove 33 are disposed on the convex strip 32.

In fig. 3, the bottom end of the pressing end 4 is connected with a mounting plate 22, the mounting plate 22 is in threaded connection with the pressing end 4, the mounting plate 22 is provided with a threaded hole 23, the threaded hole 23 penetrates through the mounting plate 22, the threaded hole 23 is connected with a threaded joint 24, and the threaded hole 23 is in threaded connection with the threaded joint 24.

In fig. 4, an outer ring 25 is fixed to a bottom end of the threaded joint 24, the threaded joint 24 is fixedly connected with the outer ring 25, a spring 27 is arranged inside the outer ring 25, the outer ring 25 is connected with the spring 27 in a sleeved mode, an inner column ring 26 is fixed to the bottom end of the threaded joint 24, the threaded joint 24 is fixedly connected with the inner column ring 26, a mold core 28 is arranged inside a bottom end of the inner column ring 26, the inner column ring 26 is fixedly connected with the mold core 28, a mold groove 29 is formed in the bottom end of the mold core 28, the mold groove 29 penetrates through the bottom side surface of the mold core 28, and a pressing end shell 30 is arranged at the lower end of the outer side of the spring 27.

In fig. 2, a blanking channel 20 is arranged right below the blanking groove hopper 7, the blanking groove hopper 7 is welded to the blanking channel 20, the lower end of the blanking channel 20 is connected with a storage chamber 21, a communicating structure is formed between the blanking channel 20 and the storage chamber 21, a material distribution channel 19 is arranged on the front side of the blanking channel 20, two rows of sheet materials are fixed inside the material distribution channel 19 to be separated, two rows of holes are formed in the bottom side of the material distribution channel 19, a movable sliding plate is further mounted at the bottom end of the material distribution channel, and the sliding plate is connected with the right end of the material pushing plate 16 through a rope.

In fig. 7, a bottom contact ring 36 is installed above the moving die plate 2, the bottom contact ring 36 penetrates through the moving die plate 2, an annular groove is formed in the upper side surface of the bottom contact ring 36, a lower die ring 37 is fixedly connected to the upper end of the bottom contact ring 36, a communicating structure is formed by the bottom contact ring 36 and a lower die ring 37 support, and an inner annular groove 38 is fixedly connected to the inner side of the lower die ring 37.

The working principle of the invention is as follows: firstly, through processing the raw material end plate 11 at the front side of the bottom box 1, pushing to the left side and opening the internal structure, putting the raw materials with uniform shapes into the material distribution channel 19, when the air rod 6 contracts to pull the movable template 2 to move to the right side, driving the material pushing plate 16 to move to the right, at this time, under the action of the right movement of the material pushing plate 16, the sliding plate at the bottom opening of the material distribution channel 19 slides to the right through the rope, so that the internal raw materials fall into the material pushing groove 34 of the material pushing plate 16, when the movable template 2 is in the extension state of the air rod 6, the material pushing plate 16 is driven to move to the left through the connecting rod, at this time, the material pushing plate 16 pulls the sliding plate at the bottom opening of the material distribution channel 19 through the rope to combine, the inner side of the material pushing groove 34 is slightly raised transversely, the raw materials can be clamped in the moving process, the raw materials in the, the raw material is pushed to the convex strip 32 of the upper material plate 17 and is matched with the material circular groove 33, when the material pushing plate 16 moves to the upper part of the upper material plate 17 leftwards, the strip groove 31 is matched with the convex long piece at the bottom side of the material pushing plate 16, the rotation of the driving motor 15 drives the upper end connecting gear to be meshed with the screw gear 14, so as to drive the threaded rod 13 at the lower end of the bearing fixing end 12 to rotate, when the threaded rod 13 rotates, the outer thread is meshed with the screw hole on the upper material plate 17 and moves upwards under the rotation action of the threaded rod 13, when the upper material plate 17 moves upwards, the upper material plate gradually approaches the material pushing plate 16, the height of the convex strip 32 and the height of the material pushing groove 34 are kept consistent, the raw material is placed at the top end of the whole height of the material pushing plate 16, then the raw material is pushed upwards, when the material pushing plate 16 is jointed with the movable template 2, the material pushing groove 34 is matched with the bottom side surface of the movable template, extruding after subsequent sheathing with the upper end component, driving the interface of the hydraulic rod 3 in the pressure applying end 4 to carry out liquid movement through an external hydraulic pump, further driving, fixing the mounting plate 22 at the bottom end of the pressure applying end 4 through a screw, and carrying out detachable replacement, fixing the threaded hole 23 and the threaded joint 24 through rotation, when the hydraulic rod 3 applies pressure downwards, enabling the pressing end shell 30 at the tail end to be in contact with the inner annular groove 38 of the movable template 2 and be in contact with the buffer block 5 in the pressing process, enabling the pressing end shell 30 to press the spring 27 in the outer ring 25 under the pressure, enabling the mold core 28 and the mold groove 29 at the inner side of the inner column ring 26 to be in contact with the lower mold ring 37 and the inner annular groove 38 at the upper end of the bottom contact ring 36 gradually, after the extrusion is completed, enabling the raw material to be in the lower mold ring 37, moving the extruded raw material to the lower mold groove hopper 7 through moving the movable template 2, and then through the blanking passage 20 to the storage chamber 21 inside the storage box 10.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.