阅读说明：本技术 一种金属切削用数控机床 (Numerical control machine tool for metal cutting ) 是由 周求兴 于 2021-08-11 设计创作，主要内容包括：本发明公开了一种金属切削用数控机床,其结构包括床体、数控电动刀架、卡盘、控制器、防尘门、底座、导轨台,床体的底部与底座的顶部固定连接,床体内部安装有导轨台,导轨台滑动连接有数控电动刀架,本发明通过由活塞、气筒、固定柱、气管组成的刀具固定组来取代螺栓,在上刀体内增设由转轮、丝杆、连杆、丝杆帽等部件构成的转动组,通过转动组带动固定柱升降,以此实现固定柱对刀具的固定,而固定柱下降对刀具顶面固定的同时进行抽气,能将刀具底面与下刀体间的气体抽掉,从而实现刀具底面与下刀体的固定,能进一步刀具固定的牢固性,防止刀具受切削力影响而发生松动。(The invention discloses a numerical control machine tool for metal cutting, which structurally comprises a bed body, a numerical control electric tool rest, a chuck, a controller, a dustproof door, a base and a guide rail table, wherein the bottom of the bed body is fixedly connected with the top of the base, the guide rail table is arranged in the bed body and is connected with the numerical control electric tool rest in a sliding manner, a cutter fixing group consisting of a piston, an air cylinder, a fixing column and an air pipe replaces a bolt, a rotating group consisting of a rotating wheel, a screw rod, a connecting rod, a screw rod cap and the like is additionally arranged in the upper cutter body, the rotating group drives the fixing column to lift so as to fix the cutter by the fixing column, the fixed column descends to fix the top surface of the cutter and simultaneously extract air, so that the air between the bottom surface of the cutter and the lower cutter body can be extracted, therefore, the bottom surface of the cutter and the lower cutter body are fixed, the firmness of cutter fixation can be further improved, and the cutter is prevented from being loosened due to the influence of cutting force.)

1. The utility model provides a digit control machine tool for metal cutting, its structure includes the bed body (1), numerical control electric knife rest (2), chuck (3), controller (4), dustproof door (5), base (6), guide rail platform (7), the bottom of the bed body (1) and the top fixed connection of base (6), the bed body (1) internally mounted has guide rail platform (7), guide rail platform (7) sliding connection has numerical control electric knife rest (2), chuck (3) are connected with the bed body (1), bed body (1) top is fixed with controller (4), dustproof door (5) and bed body (1) sliding fit, its characterized in that:

the numerical control electric tool rest (2) comprises a motor (10), an upper cover (11), a cover plate (12), an upper tool body (13), a lower tool body (14), a chassis (15) and a connecting block (16), wherein the motor (10) is connected with the chassis (15), the lower tool body (14) is arranged above the chassis (15), the lower tool body (14) is connected with the upper tool body (13) through the connecting block (16), the top of the upper tool body (13) is connected with the upper cover (11), the cover plate (12) is buckled with the upper tool body (13), the upper tool body (13) comprises a rotating group (131), a transmission belt (132), a tool fixing group (133) and a base body (134), the four directions of the base body (134) are respectively provided with the transmission belt (132), and each transmission belt (132) is respectively matched with two rotating groups (131) connected with the tool fixing group (133).

2. The numerical control machine tool for metal cutting according to claim 1, characterized in that: the cutter fixing group (133) is provided with sixteen groups, and the rotating group (131) is provided with eight groups and arranged alternately with the cutter fixing group (133).

3. The numerical control machine tool for metal cutting according to claim 1, characterized in that: the rotating group (131) comprises a rotating wheel (311), a screw rod (312), a connecting rod (313) and a screw rod cap (314), wherein a cross groove (310) is formed in the top surface of the rotating wheel (311), the screw rod (312) is connected with the rotating wheel (311), the bottom of the screw rod (312) is movably connected with a base body (134), the screw rod cap (314) is movably matched on the screw rod (312), the connecting rod (313) is fixed at two ends of the screw rod cap (314), and the rotating wheel (311) is in transmission fit with a transmission belt (132).

4. The numerically controlled machine tool for metal cutting according to claim 1 or 2, wherein: the cutter fixing group (133) comprises a piston (331), an air cylinder (332), a fixing column (333) and an air pipe (334), the piston (331) is arranged in the air cylinder (332), the fixing column (333) penetrates through the air cylinder (332) to be connected with the piston (331), and the air cylinder (332) is communicated with the air pipe (334).

5. The numerical control machine tool for metal cutting according to claim 1, characterized in that: base member (134) are equipped with one number passageway (342), one number passageway (342) and inflator (332) fixed connection, one number passageway (342) are equipped with sixteen and all are fixed with sealing ring (345), one number passageway (342) and fixed column (333) clearance fit, sealing ring (345) cooperatees with fixed column (333).

6. The numerical control machine tool for metal cutting according to claim 3, characterized in that: the base body (134) is also provided with a second channel (344) in clearance fit with the screw rod (312).

7. The numerically controlled machine tool for metal cutting according to claim 5 or 6, wherein: the base member (134) is equipped with four recess (343), every recess (343) all communicate in two No. two passageways (344) and one passageway (342), base member (134) still is equipped with gas pipeline (341) with trachea (334) matched with, gas pipeline (341) are equipped with sixteen.

8. The numerical control machine tool for metal cutting according to claim 1, characterized in that: the connecting block (16) is provided with a communication channel (161) corresponding to the gas pipeline (341).

9. The numerical control machine tool for metal cutting according to claim 1, characterized in that: an air hood (141) and an L-shaped channel (142) are arranged inside the lower cutter body (14), the air hood (141) is communicated with the L-shaped channel (142), air holes are uniformly distributed in the air hood (141), and the air pipe (334) penetrates through the air pipeline (341) and the communication channel (161) to be communicated with the L-shaped channel (142).

Technical Field

The invention belongs to the field of numerical control machine tools, and particularly relates to a numerical control machine tool for metal cutting.

Background

The metal cutting process is a process of cutting off redundant materials from a workpiece by using a cutter so as to obtain parts with satisfactory shapes, dimensional accuracy, surface quality and the like, the metal cutting process is performed by using a machine tool or a handheld tool, in terms of a numerical control machine tool, a numerical control electric tool rest of the existing numerical control machine tool fixes the cutter by using a bolt, the bolt is completely exposed, the bolt is provided with an external thread groove, impurities such as cutting scraps adhere to the thread groove, the bolt is difficult to clean, and the bolt is difficult to detach.

In order to solve the above problems, a numerical control metal cutting machine tool according to patent application No. 2020110680929 is proposed, which is characterized in that an upper protection group and a lower protection group are additionally arranged on a numerical control electric tool rest of the existing numerical control metal cutting machine tool, the upper protection group comprises a snap ring, an upper corrugated pipe and a first mounting head, one end of the upper corrugated pipe is connected with the snap ring, the other end of the upper corrugated pipe is connected with the first mounting head, the snap ring is matched with a bolt cap of a fastening bolt, the first mounting head is fixed on the top surface of the upper tool rest, the lower protection group comprises a second mounting head, a lower corrugated pipe and a fixing ring, one end of the lower corrugated pipe is connected with the lower corrugated pipe, the other end of the lower corrugated pipe is connected with the fixing ring, the second mounting head is connected with the bottom surface of the upper tool rest, the second mounting head and the first mounting head are arranged in a concentric structure, the composition structures of the second mounting head and the first mounting head are the same, and the fixing ring can be contacted with the top surface of the cutting tool, utilize the bellows to protect the bolt, cover bolt portion, prevent that the thread groove of bolt from exposing outside to this can prevent that coolant liquid and cutting bits from remaining in the thread groove, plays fine guard action to the bolt, makes subsequent dismantlement of bolt not influenced.

The applicant has found that the above-mentioned numerically controlled metal cutting machine has the following drawbacks to be improved upon:

(1) although the corrugated pipe can protect the bolt, the corrugated pipe is provided with the corrugated joint, an inner groove is formed between the corrugated joint and the corrugated joint, impurities such as cutting scraps can not remain on the bolt but can remain on the corrugated joint to influence the expansion and contraction of the corrugated pipe, and the corrugated pipe can be bent under hydraulic pressure, so that the inner wall of the corrugated pipe can rub against the outside of the bolt, and the corrugated pipe can be damaged for a long time;

(2) this numerical control metal cutting machine's numerical control electric tool rest need one to remove to rotate the bolt with the fixed of cutter, and is comparatively loaded down with trivial details, and two bellows of a bolt configuration, and still need one to remove the change bellows when the bellows is impaired ageing, not only loaded down with trivial details and cost of maintenance height.

Therefore, the application provides a numerical control machine tool for metal cutting, which improves the defects.

Disclosure of Invention

Aiming at the defects in the prior art, the invention is realized by the following technical scheme: the utility model provides a digit control machine tool for metal cutting, its structure includes, and its structure includes the bed body, numerical control electric knife rest, chuck, controller, dustproof door, base, guide rail platform, the bottom of the bed body and the top fixed connection of base, bed body internally mounted has the guide rail platform, guide rail platform sliding connection has the numerical control electric knife rest, numerical control electric knife rest is located one side of chuck, chuck and bed body coupling, the top of the bed body is fixed with the controller, the controller is located the top of dustproof door, dustproof door and bed body sliding fit.

The numerical control electric knife rest comprises a motor, an upper cover, a cover plate, an upper knife body, a lower knife body, a chassis and a connecting block, wherein the motor is connected with the chassis, the lower knife body is arranged above the chassis and connected with the upper knife body through the connecting block, the top center of the upper knife body is mechanically connected with the upper cover, the cover plate is arranged in four directions of the upper cover and buckled with the upper knife body, and the chassis is connected with a moving seat of a guide rail table.

Preferably, the upper cutter body comprises a rotating group, a transmission belt, a cutter fixing group and a base body, the transmission belt is arranged in four directions of the base body, the transmission belt is provided with four transmission belts, each transmission belt is matched with two groups of rotating groups, the rotating groups are connected with the cutter fixing group, the top of the base body is mechanically connected with the upper cover, and the bottom of the base body is connected with the top of the connecting block.

Preferably, the tool fixing groups are sixteen groups, the sixteen groups of tool fixing groups are equidistantly surrounded to form a square, the rotating group is eight groups, and the rotating group and the tool fixing groups are arranged alternately.

Preferably, the rotating group comprises a cross groove, a rotating wheel, a screw rod, a connecting rod and a screw rod cap, the cross groove is formed in the top surface of the rotating wheel, the top of the screw rod is vertically connected with the center of the bottom surface of the rotating wheel, the bottom of the screw rod is movably connected with the base body, the screw rod cap is movably matched with the screw rod, the connecting rod is fixed at each of two ends of the screw rod cap, and the rotating wheel is in transmission fit with the transmission belt.

Preferably, the cutter fixing set comprises a piston, an air cylinder, a fixing column and an air pipe, the piston is arranged in the air cylinder in a transition fit mode, the fixing column penetrates through the air cylinder and is vertically connected with the piston, and the top of the air cylinder is communicated with the air pipe.

As the optimization, the base member is equipped with the passageway No. one, passageway and inflator fixed connection, the passageway No. one is equipped with sixteen and every the passageway bottom all is fixed with the sealing ring, passageway No. one adopts clearance fit with the fixed column, the sealing ring cooperatees with the fixed column.

As optimization, the base body is further provided with a second channel, the second channel is provided with eight bearings which are installed in the second channel, the bearings are connected with the bottom of the screw rod, the second channel is arranged in the screw rod, and the two channels are in clearance fit.

As optimization, the base member is equipped with four recesses, every the recess all communicates in two No. two passageways and a passageway, runner, drive belt are located the groove, the base member still is equipped with the trachea way with trachea matched with, the trachea way is equipped with sixteen.

Preferably, the connecting block is provided with a communicating channel corresponding to the air pipeline.

Preferably, the lower cutter body is internally provided with an air hood and an L-shaped channel, the bottom of the air hood is communicated with the L-shaped channel, air holes are uniformly distributed in the air hood, and the air pipe penetrates through the air pipeline and the communication channel to be communicated with the L-shaped channel.

According to the technical scheme, the numerical control machine tool for metal cutting has the following beneficial effects:

the invention improves the numerical control electric tool rest of the numerical control machine tool, replaces a bolt by a tool fixing group consisting of a piston, an air cylinder, a fixed column and an air pipe, can solve the problems that the existing bolt is completely exposed, the bolt is provided with an external thread groove, cutting chips and other impurities are adhered to the thread groove, the bolt is difficult to clean and the bolt is difficult to disassemble, and can also solve a series of problems caused by the corrugated pipe hidden protection and the corrugated pipe damage and the like when the bolt is used, a rotating group consisting of a rotating wheel, a screw rod, a connecting rod, a screw rod cap and other parts is additionally arranged in an upper tool body, the fixed column is driven to lift through the rotating group, so that the fixing of the fixed column to the tool is realized, the problem that the bolt needs to be rotated one by one is solved, the maintenance cost can be reduced, and the fixed column descends to fix the top surface of the tool and simultaneously performs air extraction, the gas between the bottom surface of the cutter and the lower cutter body can be pumped out, so that the bottom surface of the cutter and the lower cutter body can be fixed, the firmness of cutter fixation can be further improved, and the cutter is prevented from being loosened due to the influence of cutting force.

Drawings

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

fig. 1 is a schematic structural view of a numerical control machine tool for metal cutting according to the present invention.

Fig. 2 is a schematic perspective view of the numerically controlled power tool post of the present invention.

Fig. 3 is a schematic top view of the numerically controlled power tool post of the present invention.

Fig. 4 is a first sectional structure diagram of the numerical control electric tool rest of the invention.

Fig. 5 is an enlarged structural diagram of a in fig. 4.

Fig. 6 is a schematic structural view of the tool fixing set of the present invention.

FIG. 7 is a schematic cross-sectional view of a substrate according to the present invention.

In the figure: a bed body-1, a numerical control electric tool rest-2, a chuck-3, a controller-4, a dustproof door-5, a base-6, a guide rail table-7, a motor-10, an upper cover-11, a cover plate-12, an upper tool body-13, a lower tool body-14, a chassis-15, a connecting block-16, a rotating group-131, a transmission belt-132 and a tool fixing group-133, the device comprises a base body-134, a cross groove-310, a rotating wheel-311, a screw rod-312, a connecting rod-313, a screw rod cap-314, a piston-331, an air cylinder-332, a fixed column-333, an air pipe-334, a first channel-342, a sealing ring-345, a second channel-344, a groove-343, an air pipe-341, an air cover-141 and an L-shaped channel-142.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Example one

Referring to fig. 1-6, the embodiments of the present invention are as follows:

please refer to fig. 1, a numerical control machine tool for metal cutting structurally comprises a bed body 1, a numerical control electric tool rest 2, a chuck 3, a controller 4, a dustproof door 5, a base 6 and a guide rail table 7, wherein the bottom of the bed body 1 is fixedly connected with the top of the base 6, the guide rail table 7 is installed inside the bed body 1, the guide rail table 7 is connected with the numerical control electric tool rest 2 in a sliding manner, the numerical control electric tool rest 2 is positioned on one side of the chuck 3, the chuck 3 is connected with the bed body 1, the controller 4 is fixed on the top of the bed body 1, the controller 4 is positioned above the dustproof door 5, and the dustproof door 5 is in sliding fit with the bed body 1.

Referring to fig. 2, the numerical control electric tool rest 2 includes a motor 10, an upper cover 11, a cover plate 12, an upper tool body 13, a lower tool body 14, a chassis 15, and a connecting block 16, the motor 10 is connected to the chassis 15, the lower tool body 14 is disposed above the chassis 15, the lower tool body 14 is connected to the upper tool body 13 through the connecting block 16, the upper cover 11 is mechanically connected to the top center of the upper tool body 13, the cover plate 12 is disposed at four positions of the upper cover 11, the cover plate 12 is fastened to the upper tool body 13, and the chassis 15 is connected to a moving seat of the guide rail table 7.

Referring to fig. 3-4, the upper cutter body 13 includes a rotating group 131, a transmission belt 132, cutter fixing groups 133, and a base 134, the transmission belt 132 is disposed at four positions of the base 134, four transmission belts 132 are disposed, each transmission belt 132 is matched with two rotating groups 131, the rotating groups 131 are connected to the cutter fixing groups 133, the top of the base 134 is mechanically connected to the upper cover 11, the bottom of the base 134 is connected to the top of the connecting block 16, sixteen cutter fixing groups 133 are disposed, the sixteen cutter fixing groups 133 surround a square in an equidistant manner, eight rotating groups 131 are disposed, and the rotating groups 131 and the cutter fixing groups 133 are alternately disposed.

One driving belt 132 and two groups of rotating groups 131 can drive three groups of cutter fixing groups 133 to fix the cutters, and the cutter replacement efficiency is high, so that the traditional mode of fixing the cutters by bolts one by one is abandoned.

Referring to fig. 5, the rotating group 131 includes a cross groove 310, a rotating wheel 311, a screw 312, a connecting rod 313 and a screw cap 314, the top surface of the rotating wheel 311 is provided with the cross groove 310, the top of the screw 312 is vertically connected with the center of the bottom surface of the rotating wheel 311, the bottom of the screw 312 is movably connected with the base 134, the screw cap 314 is movably matched on the screw 312, the connecting rod 313 is fixed at both ends of the screw cap 314, and the rotating wheel 311 is in transmission fit with the transmission belt 132.

The cross-shaped slot 310 is provided to facilitate insertion of a screwdriver, and rotation of the screwdriver can drive the rotating wheel 311 to rotate, thereby driving the screw rod 312 to rotate.

Referring to fig. 6, the cutter fixing assembly 133 includes a piston 331, an air cylinder 332, a fixing post 333, and an air tube 334, the piston 331 is disposed in the air cylinder 332 in transition fit with the air cylinder 332, the fixing post 333 penetrates the air cylinder 332 and is vertically connected to the piston 331, the air tube 334 is connected to the top of the air cylinder 332, the connecting rod 313 is disposed below the air cylinder 332 and is connected to the fixing post 333

The cutter fixing group 133 is arranged to fix the cutter, and a traditional bolt is abandoned to fix the cutter, so that cutting scraps and cutting fluid can be prevented from remaining in a thread groove of the bolt, the fixing column can fix the top surface of the cutter, and the fixing column can suck out gas between the cutter and a lower cutter body while descending to fix the cutter, so that the bottom surface of the cutter is fixed, double fixation of the cutter is realized, the firmness of cutter fixation is further improved, and the cutter is prevented from being affected by cutting force and loosening.

Example two

Referring to fig. 1-7, the embodiments of the present invention are as follows:

referring to fig. 1-2, a numerical control machine tool for metal cutting structurally comprises a bed body 1, a numerical control electric tool rest 2, a chuck 3, a controller 4, a dust door 5, a base 6 and a guide rail table 7, wherein the bottom of the bed body 1 is fixedly connected with the top of the base 6, the guide rail table 7 is installed inside the bed body 1, the guide rail table 7 is connected with the numerical control electric tool rest 2 in a sliding manner, the numerical control electric tool rest 2 is positioned on one side of the chuck 3, the chuck 3 is connected with the bed body 1, the controller 4 is fixed on the top of the bed body 1, the controller 4 is positioned above the dust door 5, the dust door 5 is in sliding fit with the bed body 1, the numerical control electric tool rest 2 comprises a motor 10, an upper cover 11, a cover plate 12, an upper tool body 13, a lower tool body 14, a chassis 15 and a connecting block 16, the motor 10 is connected with the chassis 15, the lower tool body 14 is arranged above the chassis 15, the lower cutter body 14 is connected with the upper cutter body 13 through a connecting block 16, the top center of the upper cutter body 13 is mechanically connected with an upper cover 11, cover plates 12 are arranged at four positions of the upper cover 11, the cover plates 12 are buckled with the upper cutter body 13, and the chassis 15 is connected with a moving seat of the guide rail table 7.

Referring to fig. 3-4, the upper cutter body 13 includes a rotating group 131, a transmission belt 132, cutter fixing groups 133, and a base 134, the transmission belt 132 is disposed at four positions of the base 134, four transmission belts 132 are disposed, each transmission belt 132 is matched with two rotating groups 131, the rotating groups 131 are connected to the cutter fixing groups 133, the top of the base 134 is mechanically connected to the upper cover 11, the bottom of the base 134 is connected to the top of the connecting block 16, sixteen cutter fixing groups 133 are disposed, the sixteen cutter fixing groups 133 surround a square in an equidistant manner, eight rotating groups 131 are disposed, and the rotating groups 131 and the cutter fixing groups 133 are alternately disposed.

Referring to fig. 5, the rotating group 131 includes a cross groove 310, a rotating wheel 311, a screw 312, a connecting rod 313 and a screw cap 314, the top surface of the rotating wheel 311 is provided with the cross groove 310, the cross groove 310 is arranged to facilitate insertion of a screwdriver, the rotating wheel 311 can be driven to rotate by rotation of the screwdriver, so as to drive the screw 312 to rotate, the top of the screw 312 is vertically connected with the center of the bottom surface of the rotating wheel 311, the bottom of the screw 312 is movably connected with the base 134, the screw cap 314 is movably matched on the screw 312, the connecting rod 313 is fixed at both ends of the screw cap 314, and the rotating wheel 311 is in transmission fit with the transmission belt 132.

Referring to fig. 6, the cutter fixing assembly 133 includes a piston 331, an air cylinder 332, a fixing post 333, and an air tube 334, the piston 331 is disposed in the air cylinder 332 in transition fit with the air cylinder 332, the fixing post 333 penetrates the air cylinder 332 and is vertically connected to the piston 331, the air tube 334 is connected to the top of the air cylinder 332, the connecting rod 313 is disposed below the air cylinder 332 and is connected to the fixing post 333

Referring to fig. 7, the base 134 is provided with a first channel 342, the first channel 342 is fixedly connected with the cylinder 332, the number one passage 342 is provided with sixteen and a sealing ring 345 is fixed at the bottom of each number one passage 342, the first passage 342 is in clearance fit with the fixed column 333, the sealing ring 345 is in fit with the fixed column 333, the base body 134 is further provided with a second channel 344, the second channel 344 is provided with eight bearings which are arranged in the second channel 344, the bearings are connected with the bottom of the screw rod 312, the screw 312 is arranged in the second channel 344 and is in clearance fit with the second channel 344, the base 134 is provided with four grooves 343, each groove 343 is communicated with two second channels 344 and one first channel 342, the rotating wheel 311 and the transmission belt 132 are located at the groove 343, the base 134 is further provided with air pipes 341 matched with the air pipes 334, and sixteen air pipes 341 are arranged.

Referring to fig. 4, the connecting block 16 is provided with a communicating channel 161 corresponding to the air pipe 341, the air hood 141 and the L-shaped channel 142 are installed inside the lower cutter body 14, the bottom of the air hood 141 is communicated with the L-shaped channel 142, air holes are uniformly distributed on the air hood 141, and the air pipe 334 passes through the air pipe 341 and the communicating channel 161 to be communicated with the L-shaped channel 142, so that air between the cutter and the lower cutter body 14 is pumped away, and the cutter can be firmly attached to the lower cutter body.

Based on the above embodiment, the specific working principle is as follows:

when the cutter is installed, the cutter is placed on the lower cutter body 14, the rotating wheel 311 is exposed by opening the cover plate 12, the screwdriver is inserted into the cross groove 310, the screwdriver is rotated, the rotating wheel 311 rotates to drive the rotating wheel on the other side to rotate through the transmission belt 132, the screw rod 312 rotates to drive the screw rod cap 314 to horizontally move downwards, the screw rod cap 314 descends to drive the fixing column 333 to descend through the connecting rod 313, the fixing column 333 descends to fix the top surface of the cutter, the fixing column 333 descends while exhausting is performed under the action of the piston 331 and the air cylinder 332, the exhausted air enters the air cylinder 332 through the air hood 141, the L-shaped channel 142 and the air pipe 334 to be stored, the air between the cutter and the lower cutter body 14 is exhausted, so that the bottom of the cutter is further adsorbed and fixed, the two-way fixation can further improve the firmness of cutter installation, the cutter is prevented from loosening;

when the cutter is detached, the rotating wheel 311 rotates in the reverse direction, so that the fixing column 333 ascends to gradually separate from the cutter, and the fixing column 333 ascends to push out the gas inside, so that the gas is blown to the bottom surface of the cutter, the cutter is separated from the lower cutter body 14, and the cutter can be detached and replaced.

In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present invention and simplifying the description, but are not intended to indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.