Machining equipment for rear heat insulation plate of automobile silencer

文档序号:179147 发布日期:2021-11-02 浏览:24次 中文

阅读说明:本技术 一种汽车消声器后隔热板加工设备 (Machining equipment for rear heat insulation plate of automobile silencer ) 是由 阮樟樟 张鹏 许超 于 2021-09-01 设计创作,主要内容包括:本发明涉及汽车零配件加工技术领域,尤其是一种汽车消声器后隔热板加工设备,针对现有技术中隔热板切割不方便收集与切割精度低的问题,现提出如下方案,其包括:壳体,所述壳体的外部一侧沿其宽度方向开设有进料口,所述壳体靠近进料口的一侧安装有输送机构,所述壳体的内侧顶部安装有升降板和用于驱动升降板升降的伸缩组件,所述升降板靠近进料口的一侧安装有可沿壳体宽度方向运动的切割机。本发明结构合理,操作简单,不仅能够对待切割的隔热板进行自动输送,并能够将切割完成的隔热板自动排出到壳体的外部,有效的提高了切割效率,还能够对隔热板的切割长度进行自动测量,有效提高了隔热板切割精度,易于推广使用。(The invention relates to the technical field of automobile part processing, in particular to an automobile muffler rear heat insulation plate processing device, which aims at solving the problems of inconvenient collection and low cutting precision of the heat insulation plate cutting in the prior art, and provides the following scheme, comprising the following steps of: the casing, the feed inlet has been seted up along its width direction to outside one side of casing, conveying mechanism is installed to one side that the casing is close to the feed inlet, the lifter plate and the flexible subassembly that is used for driving the lifter plate to go up and down are installed at the inboard top of casing, the cutting machine that can follow casing width direction motion is installed to one side that the lifter plate is close to the feed inlet. The automatic heat insulation plate cutting device is reasonable in structure and simple to operate, can automatically convey a heat insulation plate to be cut, can automatically discharge the cut heat insulation plate to the outside of the shell, effectively improves cutting efficiency, can automatically measure the cutting length of the heat insulation plate, effectively improves cutting precision of the heat insulation plate, and is easy to popularize and use.)

1. The utility model provides a heat shield plate processing equipment behind car silencer which characterized in that includes:

the device comprises a shell (1), wherein a feed inlet (2) is formed in one side of the outer portion of the shell (1) along the width direction of the shell, a conveying mechanism is installed on one side, close to the feed inlet (2), of the shell (1), a lifting plate (14) and a telescopic assembly used for driving the lifting plate (14) to lift are installed at the top of the inner side of the shell (1), and a cutting machine (22) capable of moving along the width direction of the shell (1) is installed on one side, close to the feed inlet (2), of the lifting plate (14); and

the clamping mechanism comprises a placing plate (11) arranged below the lifting plate (14), a shell (26) fixedly connected to the top of the placing plate (11), a butt plate (27) installed on the inner side of the shell (26) and a pressing plate (31) installed on the top of the shell (26), wherein the pressing plate (31) is connected with the butt plate (27) through a plurality of connecting mechanisms, the placing plate (11) is rotatably connected with the inner wall of the shell (1), and the placing plate (11) is connected with the lifting plate (14) through a linkage mechanism;

when the telescopic assembly drives the lifting plate (14) to ascend, the linkage mechanism works to drive the placing plate (11) to turn over anticlockwise, and when the telescopic assembly drives the lifting plate (14) to descend, the linkage mechanism works to drive the placing plate (11) to turn over clockwise to restore the level.

2. The machining equipment for the rear heat insulation plate of the automobile muffler is characterized in that the conveying mechanism comprises a conveying sleeve (4) fixedly connected to the inner side of the shell (1) and two conveying assemblies arranged at the bottom and the top of the conveying sleeve (4), each conveying assembly comprises a driving roller (6) rotatably connected to two ends of the conveying sleeve (4) along the width direction of the conveying sleeve (4), a conveying belt (7) movably sleeved outside the two driving rollers (6) and a driving motor (8) arranged on one side of the outer portion of the shell (1) and used for driving the driving rollers (6) to rotate.

3. The machining equipment for the rear heat insulation plate of the automobile muffler is characterized in that the telescopic assembly comprises four electric telescopic rods (15) fixedly connected to the top of the shell (1), and the extended ends of the four electric telescopic rods (15) extend to the inner side of the shell (1) and are fixedly connected with the top of the lifting plate (14).

4. The machining equipment for the rear heat insulation plate of the automobile muffler is characterized in that the connecting mechanism comprises a mounting sleeve (29) fixedly connected to the bottom of a pressure plate (31), a first spring (30) fixedly connected to the inner wall of the top of the mounting sleeve (29), a connecting rod (28) fixedly connected to the bottom of the first spring (30) and a groove (34) formed in the top of a shell (26) and corresponding to the connecting rod (28), the bottom of the connecting rod (28) penetrates through the groove (34) to extend to the inner side of the shell (26) and is fixedly connected with the top of a butting plate (27), an outer ring of one end, located at the top of the shell (26), of the connecting rod (28) is movably sleeved with a second spring (33), and the second spring (33) is located on the inner side of the groove (34).

5. The machining equipment for the rear heat insulation plate of the automobile muffler is characterized in that the linkage mechanism comprises rotating shafts (13) fixedly connected to the outer portions of the two sides of the placing plate (11), gears (24) sleeved on the outer portions of the two rotating shafts (13) and transmission plates (23) fixedly connected to the two ends of the bottom of the lifting plate (14), the other ends of the two rotating shafts (13) are respectively rotatably connected with the inner walls of the two sides of the shell (1), guide grooves (32) are formed in the outer portions of the transmission plates (23), racks (25) are fixedly connected to the inner walls of the bottom of one side of each guide groove (32), and the gears (24) are located on the inner sides of the guide grooves (32) and are matched with the racks (25).

6. The machining equipment for the rear heat insulation plate of the automobile muffler is characterized in that second sliding grooves (40) are formed in the inner walls of the two sides of the shell (1), the two second sliding grooves (40) are located at the bottom of one end of the placing plate (11), third springs (41) are fixedly connected to the inner sides of the second sliding grooves (40), sliders (42) are fixedly connected to the tops of the third springs (41), one ends of the two sliders (42) extend to the outer portion of the second sliding grooves (40) and are rotatably connected with the outer wall of the placing plate (11), limiting plates (12) are arranged at the bottoms of the ends, far away from the second sliding grooves (40), of the placing plate (11), and the limiting plates (12) are fixedly connected with the inner wall of the shell (1).

7. The machining equipment for the rear heat insulation plate of the automobile muffler is characterized in that a plurality of first sliding grooves (35) are formed in the top of the abutting plate (27) along the length direction of a shell (1) of the machining equipment, sliding sleeves (36) are connected to the inner sides of the first sliding grooves (35) in a sliding mode, tension springs (37) are fixedly connected to one side of the outer portion of each sliding sleeve (36), the other ends of the tension springs (37) are fixedly connected with the inner wall of the corresponding first sliding groove (35), push rods (38) are sleeved on the inner sides of the corresponding sliding sleeves (36) in a sliding mode, and the bottoms of the push rods (38) extend to the bottoms of the sliding sleeves (36) and are connected with the tops of the placing plates (11) in a sliding mode.

8. The machining equipment for the rear heat insulation plate of the automobile muffler is characterized in that a PLC (programmable logic controller) (39) is installed outside one side of the front face of the shell (1), a discharge hole (3) is formed in the bottom of one side, close to the feed inlet (2), of the shell (1), a sloping plate (9) is fixedly connected to the bottom of the discharge hole (3), and a collecting vehicle (10) is arranged at the bottom of the sloping plate (9).

Technical Field

The invention relates to the field of automobile part machining, in particular to machining equipment for a rear heat insulation plate of an automobile silencer.

Background

With the continuous development of industrial technology, the automobile manufacturing industry is also rapidly developed. The automobile silencer is installed on the exhaust pipe, is mainly used for reducing the exhaust noise of the engine and enabling high-temperature exhaust gas to be safely and effectively discharged, and is a part of the exhaust pipe. The rear heat insulation plate is a component part on the automobile muffler.

The heat insulating board behind the car silencer among the prior art is in the course of working, often need cut the heat insulating board according to the design needs, but current heat insulating board cutting device is when cutting the heat insulating board, need fix the heat insulating board earlier, then cut the heat insulating board, its cutting plane temperature of the heat insulating board of cutting completion is higher, inconvenient collection, and traditional heat insulating board is when the cutting, need manual measuring cutting length, its precision is lower, for this reason, this scheme provides a heat insulating board processing equipment behind car silencer.

Disclosure of Invention

The invention provides machining equipment for a rear heat insulation plate of an automobile muffler, which solves the problems that the heat insulation plate is inconvenient to cut and collect and the cutting precision is low in the prior art.

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

an apparatus for processing a rear heat insulating plate of an automobile muffler, comprising:

the automatic feeding device comprises a shell, a feeding hole is formed in one side of the outer portion of the shell along the width direction of the shell, a conveying mechanism is installed on one side, close to the feeding hole, of the shell, a lifting plate and a telescopic assembly used for driving the lifting plate to lift are installed at the top of the inner side of the shell, and a cutting machine capable of moving along the width direction of the shell is installed on one side, close to the feeding hole, of the lifting plate; and

the clamping mechanism comprises a placing plate arranged below the lifting plate, a shell fixedly connected to the top of the placing plate, a butt plate arranged on the inner side of the shell and a pressing plate arranged on the top of the shell, wherein the pressing plate is connected with the butt plate through a plurality of connecting mechanisms, the placing plate is rotatably connected with the inner wall of the shell, and the placing plate is connected with the lifting plate through a linkage mechanism;

when the telescopic assembly drives the lifting plate to ascend, the linkage mechanism works to drive the placing plate to overturn anticlockwise, and when the telescopic assembly drives the lifting plate to descend, the linkage mechanism works to drive the placing plate to overturn clockwise to restore the level.

Preferably, conveying mechanism includes the rigid coupling at the inboard transport sleeve of casing and installs two conveyor components at transport sleeve bottom and top, conveyor component includes along transport sleeve width direction rotates the driving roller, the movable sleeve of connection at the transport sleeve both ends and establishes the outside conveyor belt of two driving rollers and install and be used for driving roller pivoted driving motor in casing outside one side.

Preferably, the telescopic assembly comprises four electric telescopic rods fixedly connected to the top of the shell, and the extension ends of the four electric telescopic rods extend to the inner side of the shell and are fixedly connected to the top of the lifting plate.

Preferably, coupling mechanism includes the mounting sleeve of rigid coupling in the clamp plate bottom, the rigid coupling at the first spring of mounting sleeve top inner wall, the connecting rod of rigid coupling in first spring bottom and set up at the shell top and correspond the recess that sets up with the connecting rod, the bottom of connecting rod runs through the recess and extends to the inboard of shell and with the top rigid coupling of butt plate, the one end outer lane movable sleeve that the connecting rod is located the shell top is established with the second spring, and the second spring is located the inboard of recess.

Preferably, the link gear includes the rigid coupling place the outside pivot of board both sides, cup joint at the outside gear of two pivots and the driving plate of rigid coupling at lifter plate bottom both ends, and the other end of two pivots rotates with the both sides inner wall of casing respectively and is connected, the guide way has been seted up to the outside of driving plate, and guide way one side bottom inner wall rigid coupling has the rack, the gear is located the inboard of guide way and mutually supports with the rack.

Preferably, the second spout has all been seted up to the both sides inner wall of casing, and two second spouts all are located the one end bottom of placing the board, the inboard rigid coupling of second spout has the third spring, the top rigid coupling of third spring has the slider, and the one end of two sliders all extends to the outside of second spout and is connected with the outer wall rotation of placing the board, the one end bottom of placing the board and keeping away from the second spout is provided with the limiting plate, the inner wall rigid coupling of limiting plate and casing.

Preferably, a plurality of first spouts have been seted up along its casing length direction at the top of butt joint board, and the inboard of a plurality of first spouts all slips and has the sliding sleeve, outside one side rigid coupling of sliding sleeve has the extension spring, the other end of extension spring and the inner wall rigid coupling of first spout, it is a plurality of the inboard of sliding sleeve all slides the cover and is equipped with the push rod, and the bottom of a plurality of push rods all extends to the bottom of sliding sleeve and with place the top sliding joint of board.

Preferably, the front one side externally mounted of casing has the PLC controller, the discharge gate has been seted up to one side bottom that the casing is close to the feed inlet, the bottom rigid coupling of discharge gate has the swash plate, the bottom of swash plate is provided with the collection vehicle.

The invention has the beneficial effects that:

1. through the mutual cooperation of conveying mechanism, first spout, sliding sleeve, extension spring, push rod, PLC controller etc. realize carrying automatically and measuring the heat insulating board, the effectual cutting efficiency and the cutting precision who improves the heat insulating board.

2. Through mutual cooperation such as lifter plate, electric telescopic handle, clamp plate, butt joint board, first gear, driving plate, the realization is in the lifter plate process that rises, removes the centre gripping to the heat insulating board to the board anticlockwise slope is placed in the drive, and the automatic outside of discharging to the casing of heat insulating board that will cut and accomplish is conveniently collected, at lifter plate decline process, places the automatic level of replying of board, the effectual machining efficiency who improves the heat insulating board.

The automatic heat insulation plate cutting device is reasonable in structure, stable in structure and simple in operation, can be used for automatically conveying a heat insulation plate to be cut and automatically discharging the cut heat insulation plate to the outside of the shell, effectively improves cutting efficiency, can be used for automatically measuring the cutting length of the heat insulation plate, effectively improves cutting precision of the heat insulation plate, and is easy to popularize and use.

Drawings

Fig. 1 is a schematic front view of the present invention.

Fig. 2 is a front sectional structural view of the present invention.

Fig. 3 is an enlarged schematic view of the invention at a in fig. 2.

Fig. 4 is a right sectional structural view of the housing of the present invention.

Fig. 5 is a schematic structural view of the transmission plate and the gear of the present invention.

Fig. 6 is a schematic structural view of the abutting plate and the push rod of the present invention.

Reference numbers in the figures: 1. a housing; 2. a feed inlet; 3. a discharge port; 4. a conveying sleeve; 6. a driving roller; 7. a conveyor belt; 8. a drive motor; 9. a sloping plate; 10. a collection vehicle; 11. placing the plate; 12. a limiting plate; 13. a rotating shaft; 14. a lifting plate; 15. an electric telescopic rod; 22. a cutter; 23. a drive plate; 24. a gear; 25. a rack; 26. a housing; 27. a butt joint plate; 28. a connecting rod; 29. installing a sleeve; 30. a first spring; 31. pressing a plate; 32. a guide groove; 33. a second spring; 34. a groove; 35. a first chute; 36. a sliding sleeve; 37. a tension spring; 38. a push rod; 39. a PLC controller; 40. a second chute; 41. a third spring; 42. a slide block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1 to 6, an apparatus for processing a rear heat insulation plate of an automobile muffler includes: casing 1, casing 1's front one side externally mounted has PLC controller 39, feed inlet 2 has been seted up along its width direction to outside one side of casing 1, casing 1 is close to one side of feed inlet 2 and installs conveying mechanism, conveying mechanism includes rigid coupling at the transport cover 4 of casing 1 inboard and installs two conveyor components at transport cover 4 bottom and top, conveyor component includes along 4 width direction rotation connection of transport cover at the drive roller 6 at transport cover 4 both ends, the movable sleeve is established at two outside conveyor belt 7 of drive roller 6 and is installed and be used for driving drive roller 6 pivoted driving motor 8 in casing 1 outside one side, two conveyor belt 7 carry out the centre gripping with the heat insulating board that treats the cutting, two driving motor 8's rotation opposite direction, and then the work piece that the drive is located between two conveyor belt 7 is carried to casing 1's inboard.

It places board 11 to rotate to be connected with in the inboard of casing 1, when placing board 11 and being in the horizontality, the top of placing board 11 flushes with the inboard bottom of conveying sleeve 4, second spout 40 has all been seted up to the both sides inner wall of casing 1, two second spouts 40 all are located and place board 11 and be close to the one end bottom of conveying sleeve 4, the inboard rigid coupling of second spout 40 has third spring 41, third spring 41's top rigid coupling has slider 42, the one end of two slider 42 all extends to the outside of second spout 40, and be connected with the outer wall rotation of placing board 11, it is provided with limiting plate 12 to place board 11 and keep away from the one end bottom of second spout 40, limiting plate 12 and casing 1's inner wall rigid coupling, third spring 41 and limiting plate 12 mutually support, make under the condition of placing board 11 portion receiving external force, place board 11 and can be in the horizontality.

A shell 26 is fixedly connected to the top of the placing plate 11, an opening is formed in one end of the shell 26 close to the conveying sleeve 4, a butting plate 27 is installed on the top of the inner side of the shell 26, a pressing plate 31 is installed on the top of the shell 26, a plurality of installing sleeves 29 are fixedly connected to the bottom of the pressing plate 31, a first spring 30 is fixedly connected to the inner wall of the top of the installing sleeves 29, a connecting rod 28 is fixedly connected to the bottom of the first spring 30, a plurality of grooves 34 corresponding to the connecting rod 28 are formed in the top surface of the shell 26, the bottom of the connecting rod 28 extends to the inner side of the shell 26 through the grooves 34 and is fixedly connected to the top of the butting plate 27, an outer ring at one end of the connecting rod 28, which is located at the top of the shell 26, is movably sleeved with a second spring 33, the second spring 33 is located at the inner side of the grooves 34, when the pressing plate 31 is not stressed, the pressing plate 33 pushes up the pressing plate 31, so that the top of the butting plate 27 is butted with the top of the inner side of the shell 26, when the pressing plate 31 is stressed, the second spring 33 is compressed and the abutment plate 27 moves downwards, abutting against the top of the sheet to be cut inside the casing 26, fixing the sheet to be cut, the first spring 30 being compressed when the pressure plate 31 continues to descend.

A plurality of first spouts 35 of 1 length direction of its casing of edge have been seted up at the top of butt board 27, the inboard of a plurality of first spouts 35 all slips and has had sliding sleeve 36, outside one side rigid coupling of sliding sleeve 36 has extension spring 37, the other end of extension spring 37 and the inner wall rigid coupling of first spout 35, the inboard of a plurality of sliding sleeves 36 all slides the cover and is equipped with push rod 38, the bottom of a plurality of push rod 38 all extends to sliding sleeve 36's bottom, and with the top sliding connection who places board 11, the work piece that treats the cutting enters into the inboard of shell 26, move a plurality of push rod 38 along first spout 35 to the one end of keeping away from conveying sleeve 4, a plurality of extension springs 37 are stretched, sliding sleeve 36 is synchronous to PLC controller 39 along the distance that first spout 35 removed, PLC controller 39 is according to the cutting distance of settlement, control driving motor 8 opens and stops, the convenient length to the panel that needs the cutting carries out accurate regulation control.

Install lifter plate 14 at the inboard top of casing 1, lifter plate 14 is located places board 11, directly over, there are four electric telescopic handle 15 at 1 top rigid coupling of casing, four electric telescopic handle 15's extension end all extends to the inboard of casing 1, and with lifter plate 14's top rigid coupling, lifter plate 14 is close to one side of feed inlet 2 and installs the cutting machine 22 that can follow the motion of 1 width direction of casing, electric telescopic handle 15 extends, promote lifter plate 14 and descend, and then promote clamp plate 31 downwards, fix the inboard panel of shell 26, lifter plate 14 lasts the decline, until cutting machine 22 and fixed panel contact, then cutting machine 22 moves along the width direction of casing 1, cut panel.

A linkage mechanism is arranged between the placing plate 11 and the lifting plate 14 and connected with each other, the linkage mechanism comprises rotating shafts 13 fixedly connected with the outer parts of two sides of the placing plate 11, gears 24 sleeved on the outer parts of the two rotating shafts 13 and transmission plates 23 fixedly connected with two ends of the bottom of the lifting plate 14, the other ends of the two rotating shafts 13 are respectively rotatably connected with the inner walls of two sides of the shell 1, a guide groove 32 is arranged on the outer part of the transmission plate 23, a rack 25 is fixedly connected with the inner wall of the bottom of one side of the guide groove 32, the gear 24 is positioned on the inner side of the guide groove 32 and is mutually matched with the rack 25, the rack 25 is positioned on one side of the guide groove 32 far away from the feed inlet 2, when the lifting plate 14 rises, the clamping of the plate on the inner side of the shell 26 is released, the transmission plate 23 is driven to rise, when the lifting plate 14 is separated from the pressing plate 31, the rack 25 fixedly connected with the inner side of the guide groove 32 is meshed with the gear 24, and further the placing plate 11 is driven to rotate anticlockwise with the shell 26 and the pressing plate 31 arranged on the top of the placing plate 11, discharge the outside of shell 26 with the panel that the inboard cutting of shell 26 was accomplished, discharge gate 3 has been seted up to one side bottom that is close to feed inlet 2 at casing 1, the bottom rigid coupling of discharge gate 3 has swash plate 9, the bottom of swash plate 9 is provided with collection vehicle 10, follow discharge gate 3 along the inboard that swash plate 9 entered into collection vehicle 10, then lifter plate 14 descends, it rises to drive driving plate 23, the drive is placed board 11 and is installed and take place clockwise rotation at shell 26 and the clamp plate 31 of placing board 11 top, when gear 24 and rack 25 separate, place board 11 and resume the level.

The working principle is as follows: when the device is used, a power supply of the device is connected, a plate to be cut is guided into the inner side of the shell 1 through the feeding hole 2, then the two driving motors 8 respectively drive the two conveying belts 7 to rotate in opposite directions, the plate is conveyed to the inner side of the shell 1, the plate moves towards the top of the placing plate 11 on the inner side of the shell 1 along the horizontal direction and enters the inner side of the shell 26, the plurality of push rods 38 move towards one end far away from the conveying sleeve 4 along the first sliding groove 35, the plurality of tension springs 37 are stretched, the distance of the sliding sleeve 36 moving along the first sliding groove 35 is synchronous with the PLC 39, the PLC 39 controls the start and stop of the driving motors 8 according to the set cutting distance, the length of the plate to be cut is conveniently and accurately adjusted and controlled, then the electric telescopic rod 15 extends to push the lifting plate 14 to descend, the lifting plate 14 presses the pressing plate 31 downwards while the lifting plate 14 descends, the plate on the inner side of the shell 26 is clamped and fixed, the lifting plate 14 continuously descends, the strut cutting machine 22 can cut the plate, then the cutting machine 22 moves along the width direction of the shell 1 to cut the fixed plate, after the cutting is completed, the electric telescopic rod 15 contracts, the lifting plate 14 ascends, under the elastic action of the second spring 33, the abutting plate 27 moves upwards to remove the clamping on the plate on the inner side of the shell 26, when the lifting plate 14 is separated from the pressing plate 31, the electric telescopic rod 15 continuously contracts to drive the lifting plate 14 to continuously ascend, further drive the placing plate 11 to rotate anticlockwise, the plate on the inner side of the shell 26 after the cutting is completed is discharged to the outer part of the shell 26, then enters the inner side of the collecting vehicle 10 along the inclined plate 9 from the discharge port 3 to collect the cut plate, then the lifting plate 14 descends to drive the transmission plate 23 to move downwards, so that place board 11 clockwise rotation, when gear 24 and rack 25 separation, place board 11 and resume the level, then electric telescopic handle 15 stop work, mutually support at third spring 41 and limiting plate 12, place being in the horizontality of board 11 temperature, repeat above-mentioned operation, to the heat insulating board cut can.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

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 should be equivalent or changed within the scope of the present invention.

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