阅读说明：本技术 一种抗静电pet片材加工边料分切回收装置 (Antistatic PET sheet processing rim charge cuts recovery unit ) 是由 高永飞 于 2021-08-05 设计创作，主要内容包括：本发明公开了一种抗静电PET片材加工边料分切回收装置,涉及抗静电PET片材加工设备技术领域,包括分切组件,所述分切组件包括第一切割部以及第二切割部,以及输送组件,所述输送组件安装在支架下方,用于对分切后的边料进行输送,以及粉碎组件,所述粉碎组件一端与输送组件连接,用于将输送至的边料进行粉碎处理,将待分切片材置于输送辊表面进行输送,在输送的过程中通过输送辊表面两侧布置的切刀一对片材边料进行切割,经过切割后的边料呈长条状,通过相对布置的切刀二以及切刀三对长条状布料进行等距分割以便于进行输送和粉碎,所述粉碎组件对边料进行粉碎切割处理以便于进行回收利用,有效节约了资源,提高了加工效率。(The invention discloses an antistatic PET sheet processing rim charge slitting and recycling device, which relates to the technical field of antistatic PET sheet processing equipment and comprises a slitting component, wherein the slitting component comprises a first cutting part, a second cutting part and a conveying component, the conveying component is arranged below a bracket and used for conveying the slit rim charge, one end of the crushing component is connected with the conveying component and used for crushing the conveyed rim charge and conveying the sheet to be slit on the surface of a conveying roller, the sheet rim charge is cut by cutters arranged on two sides of the surface of the conveying roller in the conveying process, the cut rim charge is in a long strip shape, the long strip-shaped cloth is equidistantly divided by a cutter II and a cutter III which are oppositely arranged so as to be conveyed and crushed, and the crushing component is used for crushing and cutting the rim charge so as to be recycled, effectively saves resources and improves the processing efficiency.)

1. The utility model provides a recovery unit is cut to antistatic PET sheet processing rim charge, includes support (1) and conveying roller (12), conveying roller (12) are installed between support (1) for carry the sheet on surface, its characterized in that still includes

Cut the subassembly, cut the subassembly and include first cutting portion and second cutting portion, first cutting portion includes that vertical arrangement cuts (20) in conveying roller (12) surface both sides for the sheet rim charge to the transport on conveying roller (12) surface is cut, second cutting portion includes two sets of cutters (4) and three (38) of cutter of horizontal mutual disposition, cutter two (4) and three (38) of cutter are used for carrying out the equidistance cutting to the rim charge after cutting through cutter (20) to and cutter three (38) are carried out the equidistance and are cut

A conveying component which is arranged below the bracket (1) and used for conveying the cut rim charge, and

and one end of the crushing assembly is connected with the conveying assembly and is used for crushing the conveyed rim charge.

2. The cutting and recycling device for the antistatic PET sheet processing rim charge according to claim 1, wherein the first cutting portion further comprises a telescopic component, the two ends of the conveying roller (12) are fixedly provided with the supporting seats (14), the conveying roller (12) is rotatably connected with the supporting seats (14), the surface of each supporting seat (14) is fixedly provided with the telescopic component, the telescopic component comprises a hydraulic telescopic rod (15), the tail end of the telescopic end of the hydraulic telescopic rod (15) is fixedly provided with the supporting seat (16), the supporting seat (16) faces one end of the conveying roller (12) to be fixedly provided with the sleeve (17), a sleeve rod (19) is inserted into the sleeve (17), one end of the sleeve rod (19) far away from the sleeve (17) is fixedly connected with the first cutting knife (20), a telescopic spring (18) is arranged on the outer side of the sleeve rod (19), one end of the telescopic spring (18) is fixedly connected with the sleeve (17), the other end is fixedly connected with the first cutter (20).

3. The antistatic PET sheet processing rim charge slitting recovery device as claimed in claim 1 or 2, wherein a first driving motor (3) is arranged outside the bracket (1), and an output end of the first driving motor (3) penetrates through a support (14) to be fixedly connected with the conveying roller (12).

4. The cutting and recycling device for the antistatic PET sheet processing rim charge according to claim 3, wherein the second cutting part further comprises a pushing component, a support plate (11) is fixedly mounted below the conveying roller (12), the support plate (11) is fixedly connected with the support (14) through a connecting rod and a guide groove (21), a third cutter (38) is fixedly mounted at two ends of the support plate (11) relatively, the second cutter (4) and the third cutter (38) are arranged oppositely, one end, far away from the third cutter (38), of the second cutter (4) is connected with the pushing component, and the pushing component is used for pushing one side, close to and far away from the third cutter (38), of the second cutter (4) to equally divide the rim charge cut by the first cutter (20).

5. The antistatic PET sheet processing rim charge slitting and recycling device according to claim 4, wherein the pushing component comprises a rotary table (4), two ends of the conveying roller (12) are fixedly provided with worms (13) relatively, the lower part of the worm (13) is meshed with a worm wheel (2), one end of the worm wheel (2) far away from the worm (13) is in transmission connection with the rotary table (4) through a first belt (33), the worm wheel (2) and the rotary table (4) are both in transmission connection with the inner wall of the support (1) through connecting rods, one side of the surface edge of the rotary table (36) is provided with a clamping pin (35), the outer side of the clamping pin (35) is provided with a push plate (34), a through groove matched with the clamping pin (35) and movably connected is arranged between the push plates (34), a push rod (37) is fixedly connected with a second cutter (4) through the push rod (37), one end of the push rod (37) far away from the push plate (34), a guide rod is arranged below the rotary table (36), the guide rod is fixedly connected with the inner wall of the bracket (1), a sliding seat is arranged on the surface of the guide rod in a sliding manner, and the sliding seat is fixedly connected with the push plate (34).

6. The device of claim 5, a recovery unit is cut to antistatic PET sheet processing rim charge, characterized in that, the conveyor components is including arranging blanking mouth (10) and conveyer belt (9) between support (1) bottom wall, support (1) below fixed mounting supporting leg (8) relatively, conveyer belt (9) are installed between supporting leg (8), conveyer belt (9) end and vertical arrangement's defeated feed cylinder (25) intercommunication, set up flood dragon defeated material blade (23) in defeated feed cylinder (25), defeated feed cylinder (25) top fixed mounting driving motor two (22), driving motor two (22) and flood dragon defeated feed cylinder blade (23) fixed connection.

7. The device for slitting and recycling the antistatic PET sheet processing scraps as claimed in claim 6, wherein the conveying assembly further comprises two sets of oppositely arranged blades (6), the blades (6) are rotatably connected with the inner wall of the support (1), and the worms (13) on two sides are respectively in transmission connection with the blades (6) through a second belt (5) and a belt pulley (7).

8. The slitting and recycling device for the antistatic PET sheet processing rim charge according to claim 7, wherein the shredding assembly comprises a shredding barrel (27), the top of the shredding barrel (27) is provided with a feeding port (26) and is communicated with a feeding barrel (25) through a blanking plate (24), the bottom of the shredding barrel (27) is provided with a discharge port (28), the shredding barrel (27) is internally provided with an annular shredding chamber (30), a plurality of groups of shredding rotating wheels are circumferentially arranged in the annular shredding chamber (30) in a circumferential array manner and are rotatably connected with the inner wall of the shredding barrel (27), the surfaces of the shredding rotating wheels are uniformly provided with a plurality of groups of shredding cutters (29), the rear side of the shredding barrel (27) is provided with a main gear (32), the main gear (32) is fixedly connected with a rotating motor driving the shredding rotating wheels to rotate, and a plurality of groups of secondary gears (31) are circumferentially arranged in a circumferential array manner outside the main gear (32), pinion (31) and crushing runner fixed connection set up control valve between bin outlet (28) for control the opening and close of bin outlet (28).

Technical Field

The invention relates to the technical field of antistatic PET sheet processing equipment, in particular to an antistatic PET sheet processing rim charge slitting and recycling device.

Background

The principle of the antistatic high polymer material is that accumulated charges are quickly released by utilizing the conductive capability of the antistatic high polymer material, and in practical application, most antistatic high polymer materials are surface composite conductive layers or composite materials filled with conductive fillers, and the antistatic high polymer material can also be composed of intrinsic conductive high polymer materials, and can be widely applied to occasions where dust and gas explosion needs to be prevented, and precise electronic instruments are manufactured and used.

Antistatic PET sheet need cut unnecessary rim charge and retrieve in production and processing process, the sheet that cuts does not have through any processing, some can be followed cutting device and directly dropped subaerial to all be the manual rim charge with ground when the clearance and clear away, not only waste time and energy, also can the hand fish tail slightly carelessly, the sheet rim charge after the collection still need remove to shredding in the crushing apparatus, degree of automation is lower.

Disclosure of Invention

The invention aims to provide an antistatic PET sheet processing rim charge slitting and recycling device to solve the problems in the background technology.

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

the utility model provides a recovery unit is cut to antistatic PET sheet processing rim charge, includes support and conveying roller, the conveying roller is installed between the support for carry the sheet on surface, still include

The slitting component comprises a first slitting part and a second slitting part, wherein the first slitting part comprises a first cutter which is vertically arranged on two sides of the surface of a conveying roller and is used for slitting the edge material of the conveyed sheet on the surface of the conveying roller, the second slitting part comprises a second cutter and a third cutter which are transversely and oppositely arranged, the second cutter and the third cutter are used for cutting the edge material after the first cutter is slit in an equal distance, and

a conveying component arranged below the bracket and used for conveying the cut rim charge, and

and one end of the crushing assembly is connected with the conveying assembly and is used for crushing the conveyed rim charge.

Preferably, first cutting portion still includes flexible part, conveying roller both ends fixed mounting support, the conveying roller rotates with the support to be connected, support surface fixed mounting flexible part, flexible part includes hydraulic telescoping rod, the terminal fixed mounting support of the flexible tip of hydraulic telescoping rod, the support is towards the one end fixed mounting sleeve of conveying roller, the cover bar is inserted in the sleeve, telescopic one end and a cutter fixed connection are kept away from to the cover bar, the cover bar outside sets up expanding spring, expanding spring one end and sleeve fixed connection, the other end and a cutter fixed connection.

Preferably, a first driving motor is arranged on the outer side of the support, and the output end of the first driving motor penetrates through the support and is fixedly connected with the conveying roller;

preferably, the second cutting part further comprises a pushing part, a support plate is fixedly installed below the conveying roller, the support plate is fixedly connected with the support through a connecting rod and a guide groove, a third cutter is fixedly installed at two ends of the support plate relatively, the second cutter is arranged opposite to the third cutter, one end, far away from the third cutter, of the second cutter is connected with the pushing part, and the pushing part is used for pushing one side, close to and far away from the third cutter, of the second cutter to perform equidistant segmentation on the rim charge cut by the first cutter.

Preferably, the promotion part includes the carousel, the relative fixed mounting worm in conveying roller both ends, the worm below meshes with the worm wheel, the worm wheel is kept away from the one end of worm and is passed through belt one and be connected with the carousel transmission, worm wheel and carousel all rotate through connecting rod and support inner wall and be connected, carousel surface edge one side sets up the bayonet lock, the bayonet lock outside sets up the push pedal, be provided with the logical groove with bayonet lock cooperation swing joint between the push pedal, push pedal fixed connection push rod, the push pedal is kept away from to the push rod one end and two fixed connection of cutter, and the carousel below sets up the guide arm, guide arm and support inner wall fixed connection, guide arm surface sliding installation slide, slide and push pedal fixed connection.

Preferably, conveying assembly is including arranging blanking mouth and the conveyer belt between the support diapire, the relative fixed mounting supporting leg in support below, the conveyer belt is installed between the supporting leg, conveyer belt end and vertical arrangement's feed delivery cylinder intercommunication, set up the defeated material blade of flood dragon in the feed delivery cylinder, feed delivery cylinder top fixed mounting driving motor two, driving motor two and flood dragon defeated material blade fixed connection.

Preferably, the conveying assembly further comprises two sets of blades which are arranged oppositely, the blades are rotatably connected with the inner wall of the support, and the worms on the two sides are in transmission connection with the blades through a second belt and a belt pulley respectively.

Preferably, crushing unit includes the rubbing crusher, the rubbing crusher top sets up the feed inlet and communicates with the feed delivery section of thick bamboo through blanking board, the rubbing crusher bottom sets up the bin outlet, set up annular crushing room in the rubbing crusher, be circumference array circumference in the annular crushing room and arrange the multiunit and smash the runner, smash the runner and rotate with the rubbing crusher inner wall and be connected, smash the runner surface and evenly set up multiunit and smash the cutter, the rubbing crusher rear side sets up the master gear, and the master gear is rather than pivoted rotation motor fixed connection with the drive, and the master gear outside is circumference array circumference and arranges multiunit pinion, pinion and crushing runner fixed connection set up control flap between the bin outlet for open and close to the bin outlet is controlled.

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

the sheet to be cut is placed on the surface of a conveying roller to be conveyed, a pair of sheet edge materials are cut by cutters arranged on two sides of the surface of the conveying roller in the conveying process, the cut edge materials are in a long strip shape, the long strip-shaped cloth is equally divided by a cutter II and a cutter III which are oppositely arranged so as to be conveyed and crushed, the conveying assembly conveys the falling edge materials into a crushing assembly, and the crushing assembly crushes and cuts the edge materials so as to be recycled, so that resources are effectively saved.

Drawings

FIG. 1 is a schematic structural diagram of an antistatic PET sheet processing scrap slitting and recycling device.

Fig. 2 is an enlarged structural schematic diagram of a cutting and recycling device for antistatic PET sheet processing scraps at the position A in fig. 1.

FIG. 3 is a schematic structural diagram of a guide groove in an antistatic PET sheet processing scrap slitting and recycling device.

FIG. 4 is a schematic structural diagram of a crushing cylinder in an antistatic PET sheet processing scrap cutting and recycling device.

Fig. 5 is a schematic structural diagram of a main gear in an antistatic PET sheet processing scrap slitting and recycling device.

In the figure: 1-a scaffold; 2-a turbine; 3, driving a first motor; 4-cutting knife II; 5, a second belt; 6-blade; 7-a belt pulley; 8-supporting legs; 9-a conveyor belt; 10-a blanking port; 11-a support plate; 12-a conveyor roll; 13-a worm; 14-a support; 15-hydraulic telescopic rod; 16-a support; 17-a sleeve; 18-a telescoping spring; 19-a loop bar; 20-cutting the first cutter; 21-a guide groove; 22-driving a second motor; 23-dragon leaf feeding; 24-a blanking plate; 25-a material conveying cylinder; 26-a feed inlet; 27-a crushing cylinder; 28-discharge opening; 29-crushing cutter; 30-an annular crushing chamber; 31-pinion gear; 32-main gear; 33-belt one; 34-a push plate; 35-bayonet lock; 36-a turntable; 37-a push rod; 38-cutter three.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to specific embodiments.

Referring to fig. 1-5, an antistatic PET sheet processing edge trim slitting recovery device comprises a support 1, a conveying roller 12, a slitting assembly, a conveying assembly and a crushing assembly, wherein the conveying roller 12 is installed between the support 1 and used for conveying a sheet on the surface, the slitting assembly comprises a first cutting portion and a second cutting portion, the first cutting portion comprises a first cutter 20 vertically arranged on two sides of the surface of the conveying roller 12 and used for slitting the sheet edge trim conveyed on the surface of the conveying roller 12, the second cutting portion comprises two cutter sets, namely a second cutter 4 and a third cutter 38, which are transversely arranged oppositely, the second cutter set 4 and the third cutter 38 are used for cutting the edge trim which is slit by the first cutter 20 at equal intervals, the conveying assembly is installed below the support 1 and used for conveying the slit edge trim, one end of the crushing assembly is connected with the conveying assembly, the crushing device is used for crushing the delivered rim charge;

specifically, in the embodiment, the sheet to be cut is placed on the surface of the conveying roller 12 to be conveyed, the edge material of the sheet is cut by the cutters one 20 arranged on two sides of the surface of the conveying roller 12 in the conveying process, the cut edge material is in a strip shape, the strip-shaped cloth is equally divided by the cutters two 4 and the cutters three 38 which are oppositely arranged so as to be conveyed and crushed, the conveying assembly conveys the fallen edge material into the crushing assembly, and the crushing assembly crushes and cuts the edge material so as to be recycled, so that resources are effectively saved.

As a further scheme of the embodiment of the invention, the first cutting part further comprises a telescopic component, supports 14 are fixedly installed at two ends of the conveying roller 12, the conveying roller 12 is rotatably connected with the supports 14, the telescopic component is fixedly installed on the surface of each support 14, the telescopic component comprises a hydraulic telescopic rod 15, a support 16 is fixedly installed at the tail end of the telescopic end of the hydraulic telescopic rod 15, a sleeve 17 is fixedly installed at one end, facing the conveying roller 12, of the support 16, a sleeve rod 19 is inserted in the sleeve 17, one end, far away from the sleeve 17, of the sleeve rod 19 is fixedly connected with a first cutting knife 20, a telescopic spring 18 is arranged on the outer side of the sleeve rod 19, one end of the telescopic spring 18 is fixedly connected with the sleeve 17, and the other end of the telescopic spring is fixedly connected with the first cutting knife 20;

specifically, in the embodiment, the hydraulic telescopic rod 15 stretches and contracts to drive the first cutting knife 20 to approach or separate from one side of the conveying roller 12, and the first cutting knife 20 is in contact with the conveying roller 12, so that the buffering effect between the first cutting knife 20 and the sheet is improved through the sleeve 17, the loop bar 19 and the telescopic spring 18.

As a further scheme of the embodiment of the invention, a first driving motor 3 is arranged outside the bracket 1, and the output end of the first driving motor 3 penetrates through a support 14 to be fixedly connected with a conveying roller 12;

specifically, in the present embodiment, a first driving motor 3 is started, and the first driving motor 3 drives the conveying roller 12 to rotate to convey the sheet.

As a further scheme of the embodiment of the invention, the second cutting part further comprises a pushing component, a support plate 11 is fixedly installed below the conveying roller 12, the support plate 11 is fixedly connected with a support 14 through a connecting rod and a guide groove 21, a third cutter 38 is fixedly installed at two ends of the support plate 11 relatively, a second cutter 4 and a third cutter 38 are arranged relatively, one end, far away from the third cutter 38, of the second cutter 4 is connected with the pushing component, and the pushing component is used for pushing one side, close to and far away from the third cutter 38, of the second cutter 4 and equally dividing the rim charge cut by the first cutter 20;

specifically, in this embodiment, the edge material primarily cut by the first cutter 20 passes through the guide groove 21 and falls between the second cutter 4 and the third cutter 38, and the pushing component pushes the second cutter 4 to move towards one side of the third cutter 38, so as to perform equidistant cutting treatment on the edge material.

As a further scheme of the embodiment of the invention, the pushing component comprises a rotary table 4, two ends of the conveying roller 12 are relatively and fixedly provided with a worm 13, the lower part of the worm 13 is meshed with a worm wheel 2, one end of the worm wheel 2, far away from the worm 13, is in transmission connection with the rotary table 4 through a belt I33, both the worm wheel 2 and the rotary table 4 are in rotating connection with the inner wall of the support 1 through connecting rods, one side of the surface edge of the rotary table 36 is provided with a bayonet 35, the outer side of the bayonet 35 is provided with a push plate 34, a through groove which is matched and movably connected with the bayonet 35 is arranged between the push plates 34, the push plate 34 is fixedly connected with a push rod 37, one end of the push rod 37, far away from the push plate 34, is fixedly connected with a cutter II 4, a guide rod is arranged below the rotary table 36, the guide rod is fixedly connected with the inner wall of the support 1, a sliding seat is arranged on the surface of the guide rod in a sliding manner, and the sliding seat is fixedly connected with the push plate 34;

specifically, in the present embodiment, the conveying roller 12 drives the worm 13 to rotate during rotation, the worm 13 drives the worm wheel 2 to rotate, the worm wheel 2 drives the rotary table 36 to rotate through the first belt 33, and the rotary table 36 pushes the second cutter 4 to approach and depart from the third cutter 38 through the bayonet 35, the through groove, the push plate 34 and the push rod 37 during rotation.

As a further scheme of the embodiment of the invention, the conveying assembly comprises a blanking port 10 and a conveyor belt 9 which are arranged between the bottom walls of a support 1, supporting legs 8 are relatively and fixedly installed below the support 1, the conveyor belt 9 is installed between the supporting legs 8, the tail end of the conveyor belt 9 is communicated with a vertically arranged conveying cylinder 25, a flood dragon conveying blade 23 is arranged in the conveying cylinder 25, a driving motor II 22 is fixedly installed at the top of the conveying cylinder 25, and the driving motor II 22 is fixedly connected with the flood dragon conveying blade 23;

specifically, in this embodiment, the rim charge after cutting through two 4 and three 38 equidistance of cutter falls to conveyer belt 9 surface through blanking mouth 10, conveyer belt 9 carries the rim charge to conveying cylinder 25 below, starts two 22 driving motor, two 22 driving flood dragon defeated material blades rotate 23, upwards promote the rim charge on conveyer belt 9 surface.

As a further scheme of the embodiment of the invention, the conveying assembly further comprises two groups of oppositely arranged blades 6, the blades 6 are rotatably connected with the inner wall of the bracket 1, and the worms 13 on two sides are respectively in transmission connection with the blades 6 through a second belt 5 and a belt pulley 7;

specifically, in this embodiment, worm 13 drives blade 6 through two 5 of belts and belt pulley 7 in the pivoted in-process and rotates, blade 6 will blow to support 1 middle part and fall to conveyer belt 9 surface through blanking mouth 10 through rim charge and piece after two 4 and three 38 equidistance cuts of cutter at the pivoted in-process, avoid partial piece to fall to ground.

As a further scheme of the embodiment of the present invention, the pulverizing assembly includes a pulverizing barrel 27, a feed inlet 26 is disposed at the top of the pulverizing barrel 27 and is communicated with a material delivery barrel 25 through a blanking plate 24, a discharge outlet 28 is disposed at the bottom end of the pulverizing barrel 27, an annular pulverizing chamber 30 is disposed in the pulverizing barrel 27, a plurality of sets of pulverizing rotating wheels are circumferentially arranged in a circumferential array in the annular pulverizing chamber 30, the pulverizing rotating wheels are rotatably connected with the inner wall of the pulverizing barrel 27, a plurality of sets of pulverizing cutters 29 are uniformly disposed on the surface of the pulverizing rotating wheels, a main gear 32 is disposed at the rear side of the pulverizing barrel 27 and is fixedly connected with a rotating motor for driving the main gear 32 to rotate, a plurality of sets of auxiliary gears 31 are circumferentially arranged in a circumferential array outside the main gear 32, the auxiliary gears 31 are fixedly connected with the pulverizing rotating wheels, and a control valve is disposed between the discharge outlets 28 for controlling the opening and closing of the discharge outlet 28;

specifically, in this embodiment, the conveying cylinder 25 conveys the rim charge on the surface of the conveying belt 12 to the annular crushing chamber 30 through the blanking plate 24 and the feeding port 26, the main gear 32 is driven to rotate through the rotating device, the auxiliary gear 31 drives the crushing rotating wheel to rotate through being meshed with the main gear 32, the crushing rotating wheel drives the crushing cutter 29 to rotate in the rotating process, the rim charge in the annular crushing chamber 30 is crushed and cut, and the rim charge after being sufficiently crushed and cut is discharged through the discharging port 28.

The working principle of the invention is as follows: the sheet to be cut is placed on the surface of a conveying roller 12 to be conveyed, the edge material of the sheet is cut by a first cutter 20 arranged on two sides of the surface of the conveying roller 12 in the conveying process, the edge material after cutting is in a long strip shape, long strip cloth is equally divided by a second cutter 4 and a third cutter 38 which are oppositely arranged so as to be conveyed and crushed, the edge material after being equally divided by the second cutter 4 and the third cutter 38 falls onto the surface of a conveying belt 9 through a blanking port 10, the conveying belt 9 conveys the edge material to the lower part of a conveying cylinder 25, a second driving motor 22 is started, the second driving motor 22 drives a flood dragon conveying blade 23 to rotate, the edge material on the surface of the conveying belt 9 is upwards lifted, the conveying cylinder 25 conveys the edge material on the surface of the conveying belt 12 into an annular crushing chamber 30 through a blanking plate 24 and a feeding port 26, and drives a main gear 32 to rotate through a rotating device, the pinion 31 drives the crushing rotating wheel to rotate by meshing with the main gear 32, the crushing rotating wheel drives the crushing cutter 29 to rotate in the rotating process, the rim charge in the annular crushing chamber 30 is crushed and cut, and the rim charge after being sufficiently crushed and cut is discharged through the discharge opening 28 so as to be recycled.

While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.