Disclosure of Invention
In order to solve the problems in the prior art. The invention provides an injection molding plate conveying device capable of facilitating feeding and a preparation process thereof to solve the problems.
The technical scheme adopted by the invention for solving the technical problems is as follows: a injection molding plate conveying device convenient for loading comprises: a base; the conveying part is erected on the base and is suitable for conveying the injection molding plate; the feeding part is erected at the top of the conveying part and can clamp a plurality of injection molding plates and is plugged at the top of the conveying part.
As preferred, the material loading portion includes backup pad and the grip block that the mirror image set up, the width of backup pad equals the width of moulding plastics the board, the width of grip block equals the length of moulding plastics the board, the backup pad with the bottom of grip block flushes, the backup pad with the lateral wall that the lateral wall can laminate the injection moulding board is followed to the length of grip block, and, the short edge lateral wall array of backup pad is provided with a plurality of splices, the lateral wall of grip block seted up a plurality of with the concatenation breach of splice adaptation.
Preferably, the splicing part comprises a splicing column and a pushing block, the splicing column is integrally arranged on the short edge side wall of the supporting plate, and the pushing block is fixed on the side wall of the splicing column.
As preferred, the lateral wall elasticity of concatenation breach is provided with the elastic block, the free state of elastic block is for keeping away from the lateral wall of concatenation breach, the tip of top ejector pad is provided with the circular arc chamfer, wherein, the elastic block can by the circular arc chamfer top of top ejector pad tip pushes away the compression, so that top ejector pad card is gone into the concatenation breach.
Preferably, the conveying part comprises conveying cross beams arranged in parallel and a conveying motor fixed on the base, a plurality of conveying rollers are rotatably arranged between the conveying cross beams, a conveying belt is sleeved on each conveying roller, the side wall of each conveying cross beam is attached to the side wall of the injection molding plate, the top of each conveying cross beam is lower than the top of the injection molding plate, the feeding part is arranged at the top of each conveying cross beam, and the conveying rollers at the end points of the conveying part are connected with the rotating shafts of the conveying motors.
Preferably, the feeding part further comprises two pairs of upright columns arranged in a mirror image manner, each pair of upright columns is fixed to the tops of the two conveying cross beams, the distance between each pair of upright columns is equal to the width of the supporting plate, mounting grooves are formed in opposite side walls of each pair of upright columns, and mounting strips matched with the mounting grooves are arranged on the side walls of the supporting plate.
Preferably, the distance between the bottom of the mounting groove and the top of the conveying belt is equal to the thickness of the injection molding plate, so that the injection molding plate in the feeding part can slide out of the clamping plate.
Preferably, the injection molding plate conveying device convenient for loading further comprises a cutting part, and the cutting part is arranged behind the loading part relative to the conveying direction of the conveying part; the cutting part comprises cutting support legs and two cutting blocks, the cutting support legs are arranged at the top of the conveying beam in a mirror image mode, through holes are formed in the cutting support legs, and the cutting blocks are inserted in the through holes; the circumferential side wall array of the cutting block is provided with a plurality of cutting heads, the edge of each cutting head close to the injection molding plate is chamfered with a cutting oblique angle, and the edge of the cutting oblique angle close to the starting point of the conveying part is lower than the edge of the cutting oblique angle far away from the starting point of the conveying part; the cutting block is cylindrical, the side wall of the cutting block is coaxially provided with a cylindrical connecting block matched with the through hole, a plurality of clamping columns are arranged on the circumferential side wall array of the connecting block, a plurality of clamping notches matched with the clamping columns are formed in the inner wall of the through hole, the number of the clamping columns is equal to the number of the clamping notches, and the number of the clamping columns is equal to the number of the cutting heads; the side wall of the connecting block is coaxially provided with an inserting hole, an inserting column is inserted in the inserting hole, a positioning roller is rotatably arranged on the inserting column, a plurality of circles of positioning needles are arranged on the circumferential side wall array of the positioning roller, each circle of positioning needles are arranged relative to the axis array of the positioning roller, the needle points of the positioning needles can abut against an injection molding plate, and when the injection molding plate passes through the positioning roller, the injection molding plate can be retained by the positioning needles to form a plurality of equidistant needle holes.
Preferably, a semi-annular cooling stop ring is coaxially arranged on the side wall, close to the positioning roller, of the cutting block, a flexible cooling hose is fixed on the inner wall of the cooling stop ring, one end of the cooling hose is arranged above the cutting head, the other end of the cooling hose is connected with a cooling medium, a plurality of extrusion columns are arranged on the side wall of the positioning roller in an array mode relative to the axis of the positioning roller, each extrusion column is rotatably provided with an extrusion ring, and when the positioning roller rotates, the extrusion rings can extrude the cooling hose in a reciprocating mode; the arc length of an arc formed by the circle centers of the two adjacent extrusion columns and the circle center of the positioning roller is smaller than the arc length of the inner wall of the cooling baffle ring; an air blowing channel is arranged inside the cutting block, a plurality of air blowing outlets which are arranged with the same radius as the extrusion column are arranged on the side wall of the cutting block close to the positioning roller, the side wall of the connecting block is provided with an air blowing inlet, the air blowing outlet is communicated with the air blowing inlet through the air blowing flow channel, the blowing outlet is provided with a blowing column in a sliding way, the end part of the blowing column close to the blowing channel is integrally provided with a stop ring with the radius larger than that of the blowing outlet, the circumferential side wall of the air blowing column is provided with two communicated air blowing holes, the air blowing holes close to the positioning rollers are always exposed out of the air blowing outlet, the edge of the contact end part of the extrusion column and the air blowing column is chamfered with a round angle, when the extrusion column rotates to the blowing column, the extrusion column pushes the blowing column, and the blowing hole far away from the positioning roller extends into the blowing flow channel; when the extrusion column leaves the air blowing column, the blocking ring is pushed by air in the air blowing flow channel to be attached to the air blowing outlet.
The invention also comprises a process for preparing injection-molded plates using said delivery device, comprising:
s1, stacking injection molding plates after injection molding and splicing the injection molding plates into a stack by using the supporting plates and the clamping plates;
s2, placing the stacked injection molding plates above the conveying belt through the matching of the mounting strip and the mounting groove;
s3, orderly conveying the injection molding plates to a cutting head through a conveying belt;
s4, scraping burrs of the edge at the top of the injection molding plate by the edge of the cutting bevel;
s5, the injection molding plate pushes the positioning needles to rotate, and meanwhile, the positioning needles leave a plurality of rows of equidistant needle holes at the top of the injection molding plate;
s6, rotating the extrusion ring to extrude the cooling medium in the cooling hose to the cutting head;
and S7, rotating the extrusion column to push the air blowing column, and blowing air to the surface of the injection plate through the air blowing hole close to the injection plate.
The invention has the beneficial effects that:
1. various components can be stably erected through the base, the improvement and maintenance of equipment in the later period are facilitated, the structure is simple and reliable, and the use convenience is improved;
2. the injection molding plate can be orderly conveyed to a specified working procedure through the conveying part, and the structure is simple and reliable;
3. can put things in good order the buttress with the board of moulding plastics through material loading portion to place the starting point at the conveying part with the board of moulding plastics of putting things in good order the buttress, improved the portability of material loading, simple structure is reliable, has improved the convenience of using.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
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", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The first embodiment is as follows:
as shown in fig. 1-7, the present invention provides a device for transporting injection molding plates 000 for easy loading, comprising: a base 100; a conveying part 200, wherein the conveying part 200 is erected on the base 100, and the conveying part 200 is suitable for conveying the injection molding plate 000; a feeding part 300, wherein the feeding part 300 is erected on the top of the conveying part 200, and the feeding part 300 can clamp a plurality of injection molding plates 000 and is inserted and connected on the top of the conveying part 200; in short, various components can be stably erected through the base 100, the improvement and maintenance of equipment in the later period are facilitated, the structure is simple and reliable, and the use convenience is improved; furthermore, the injection molding plate 000 can be orderly conveyed to a specified working procedure through the conveying part 200, and the structure is simple and reliable; furthermore, the injection molding plates 000 can be stacked through the feeding part 300, and the stacked injection molding plates 000 are placed at the starting point of the conveying part 200, so that the feeding portability is improved, the structure is simple and reliable, and the use convenience is improved.
The feeding part 300 comprises a supporting plate 301 and a clamping plate 302, the supporting plate 301 and the clamping plate 302 are arranged in a mirror image mode, the width of the supporting plate 301 is equal to that of the injection molding plate 000, the width of the clamping plate 302 is equal to that of the injection molding plate 000, the bottoms of the supporting plate 301 and the clamping plate 302 are flush, the long edge side walls of the supporting plate 301 and the clamping plate 302 can be attached to the side wall of the injection molding plate 000, a plurality of splicing parts 303 are arranged on the short edge side wall array of the supporting plate 301, and a plurality of splicing notches 3021 matched with the splicing parts 303 are formed in the side wall of the clamping plate 302; in short, the support plate 301 and the clamping plate 302 are connected end to form a rectangular frame, and the injection molding plate 000 after injection molding is clamped inside; further, the supporting plate 301 and the clamping plate 302 are detachably connected through the connecting joint 303 and the splicing gap 3021, and are portable.
The splicing part 303 comprises a splicing column 3031 and a pushing block 3032, the splicing column 3031 is integrally arranged on the short edge side wall of the support plate 301, and the pushing block 3032 is fixed on the side wall of the splicing column 3031; in short, the splicing column 3031 and the pushing block 3032 can be selected from flexible materials, and when the splice plate and the clamping plate 302 are required to be spliced, the splicing gap 3021 is aligned to the pushing block 3032, and the splicing gap 3021 is pressed into the pushing block 3032, so that the structure is simple and the use is portable; when the dismounting is needed, the pushing block 3032 is only required to be pulled out of the splicing notch 3021.
An elastic block 3022 is elastically arranged on the side wall of the splicing gap 3021, the elastic block 3022 is in a free state away from the side wall of the splicing gap 3021, and an arc chamfer 3033 is arranged at the end of the pushing block 3032, wherein the elastic block 3022 can be pushed and compressed by the arc chamfer 3033 at the end of the pushing block 3032, so that the pushing block 3032 is clamped into the splicing gap 3021; in short, the elastic block 3022 can be guided to rebound by the arc chamfer 3033, so that the splicing gap 3021 is pressed into the pushing block 3032; further, the elastic block 3022 that elasticity set up can kick back and support the concatenation post 3031 after the concatenation of grip block 302 is accomplished, avoids the roll-off of grip block 302, and simple structure is reliable, has improved the convenience of using.
The conveying part 200 comprises conveying cross beams 201 arranged in parallel and a conveying motor 202 fixed on the base 100, a plurality of conveying rollers 203 are rotatably arranged between the conveying cross beams 201, a conveying belt 204 is sleeved on the conveying rollers 203, the side walls of the conveying cross beams 201 are attached to the side walls of the injection molding plates 000, the tops of the conveying cross beams 201 are lower than the tops of the injection molding plates 000, the feeding part 300 is arranged at the tops of the conveying cross beams 201, and the conveying rollers 203 at the end points of the conveying part 200 are connected with the rotating shafts of the conveying motor 202; in short, the conveying beam 201 is erected on the base 100 for supporting each conveying roller 203, the conveying rollers 203 tighten the conveying belt 204 to drive the conveying belt 204, and the tops of the conveying rollers 203 can support the injection molding plates 000 on the conveying belt 204.
The feeding part 300 further comprises two pairs of upright posts 304 arranged in a mirror image manner, each pair of upright posts 304 is fixed at the tops of two conveying cross beams 201, the distance between each pair of upright posts 304 is equal to the width of the supporting plate 301, opposite side walls of each pair of upright posts 304 are provided with mounting grooves 3041, and the side walls of the supporting plate 301 are provided with mounting strips 3011 matched with the mounting grooves 3041; in short, the mounting groove 3041 is matched with the mounting strip 3011 to quickly mount the feeding portion 300 to the starting point of the conveying portion 200, so that automatic feeding is realized, and the structure is simple and reliable and is convenient to operate.
The distance between the bottom of the mounting groove 3041 and the top of the conveyor belt 204 is equal to the thickness of the injection molding plate 000, so that the injection molding plate 000 in the feeding part 300 can slide out of the clamping plate 302; in short, the distance between the bottom of the mounting groove 3041 and the top of the conveyor belt 204 should be not less than the thickness of one injection-molded plate 000, and less than the thickness of two injection-molded plates 000, so as to ensure that the injection-molded plates 000 in the loading part 300 are conveyed out of the loading part 300 by the conveyor belt 204 one by one.
The injection molding plate 000 conveying device facilitating loading further comprises a cutting part 400, and the cutting part 400 is arranged behind the loading part 300 relative to the conveying direction of the conveying part 200; the cutting part 400 comprises a cutting support leg 401 and two cutting blocks 402, wherein the cutting support leg 401 and the two cutting blocks 402 are arranged at the top of the conveying beam 201 in a mirror image mode, a through hole 4011 is formed in the cutting support leg 401, and the cutting blocks 402 are inserted into the through hole 4011; the circumferential side wall array of the cutting block 402 is provided with a plurality of cutting heads 403, the edge of the cutting heads 403 close to the injection molding plate 000 is chamfered with a cutting bevel 4031, and the edge of the cutting bevel 4031 close to the starting point of the conveying part 200 is lower than the edge of the cutting bevel 4031 far away from the starting point of the conveying part 200; as shown in the figure, the conveying direction of the conveying device is from left to right, the cutting block 402 is arranged above the conveying belt 204 through the cutting support legs 401, and the edge of the cutting head 403 integrally arranged with the cutting block 402, which is close to one side of the injection molding plate 000, is provided with a cutting bevel 4031; furthermore, the cutting bevel 4031 is obliquely arranged, and the edge of the cutting bevel 4031 close to the end point of the conveying part 200 is lifted, so that the edge is prevented from interfering with the injection molding plate 000 in the conveying process, and therefore the edge of the cutting bevel 4031 close to the starting point of the conveying part 200 can scrape the edge of the passing injection molding plate 000 and clean burrs, turned edges and the like of the injection molding plate 000, the structure is simple and reliable, and the use convenience is improved; further, a feed roller 203 is provided directly below the cutting block 402 to provide a good support for the injection plate 000 in the spatula.
The cutting block 402 is cylindrical, a cylindrical connecting block 404 matched with the through hole 4011 is coaxially arranged on the side wall of the cutting block 402, a plurality of clamping columns 4041 are arranged on the circumferential side wall array of the connecting block 404, a plurality of clamping notches 4012 matched with the clamping columns 4041 are formed in the inner wall of the through hole 4011, and the number of the clamping columns 4041 is equal to the number of the clamping notches 4012; in short, the clamping column 4041 is matched with the clamping notch 4012, the connecting block 404 and the cutting support leg 401 can be quickly inserted, meanwhile, the through hole 4011 is formed into a conical hole, the connecting block 404 can be clamped when the connecting block 404 is inserted, the connecting block 404 only needs to be pushed from the opposite side in a detachable mode, the structure is simple and reliable, and the use convenience is improved; furthermore, the number of the clamping columns 4041 is equal to that of the clamping notches 4012, so that the connection stability of the connecting block 404 and the cutting support legs 401 can be improved, the cutting head 403 can be more stable during scraping, and the use reliability is improved;
the number of the clamping columns 4041 is equal to that of the cutting heads 403; in short, the mounting position of the clipping column 4041 is matched with the position of the cutting head 403, that is, the working position of the cutting head 403, the clipping column 4041 can just be inserted into the clipping notch 4012, when burrs with different sizes are needed to be scraped, the cutting block 402 can be detached and mounted on the cutting support leg 401 after rotating to the needed cutting head 403, or after one cutting head 403 is worn, the other cutting head 403 can be quickly replaced, the structure is simple and reliable, and the use convenience is improved;
the side wall of the connecting block 404 is coaxially provided with an inserting hole 4042, an inserting column 405 is inserted into the inserting hole 4042, a positioning roller 406 is rotatably arranged on the inserting column 405, a plurality of circles of positioning needles 4061 are arranged on the circumferential side wall array of the positioning roller 406, each circle of positioning needles 4061 are arranged in an array mode relative to the axis of the positioning roller 406, and the needle points of the positioning needles 4061 can abut against the injection molding plate 000, wherein when the injection molding plate 000 passes through the positioning roller 406, the injection molding plate 000 can leave a plurality of equidistant needle holes by the positioning needles 4061; in short, the inserting column 405 is installed between the two cutting support legs 401 through the inserting hole 4042, the positioning rollers 406 are rotatably arranged on the inserting column 405 through bearings, a plurality of circles of positioning pins 4061 are inserted into the side wall of the positioning rollers 406, each circle of positioning pins 4061 are equidistant, and meanwhile, the adjacent positioning pins 4061 in each circle keep a proper distance, so that when one positioning pin 4061 leaves the injection-molded board 000, the next positioning pin 4061 can contact the injection-molded board 000, thereby ensuring that the positioning rollers 406 can stably rotate at a constant speed in the conveying process of the injection-molded board 000, so that the equidistant positioning pins 4061 are left on the surface of the injection-molded board 000, and during the subsequent punching process, holes are formed only in required positions according to the punched positioning pins 4061, and the structure is simple and reliable.
A semi-annular cooling baffle ring 407 is coaxially arranged on the side wall of the cutting block 402 close to the positioning roller 406, a flexible cooling hose 4071 is fixed on the inner wall of the cooling baffle ring 407, one end of the cooling hose 4071 is arranged above the cutting head 403, the other end of the cooling hose 4071 is connected with a cooling medium, a plurality of extrusion columns 408 are arranged on the side wall of the positioning roller 406 in an array mode relative to the axis of the positioning roller 406, an extrusion ring 4081 is rotatably arranged on each extrusion column 408, and when the positioning roller 406 rotates, the extrusion rings 4081 can extrude the cooling hose 4071 in a reciprocating mode; in short, the cooling ring 407 concentrically disposed with the cutting block 402 ensures that the distance from the inner wall of the cooling ring 407 is fixed and does not interfere with the cooling ring 407 when the extrusion column 408 fixed to the positioning roller 406 is rotated following the positioning roller 406; furthermore, by fixing a flexible cooling hose 4071 in the cooling collar 407 and rotating the extrusion ring 4081 on the extrusion column 408, the cooling hose 4071 can be extruded by rotating itself while the extrusion ring 4081 revolves; furthermore, the cooling hose 4071 is fixed on the inner wall of the cooling baffle ring 407 through a flexible buckle, when the two extrusion rings 4081 rotate into the cooling baffle ring 407 simultaneously, the two extrusion rings 4081 can seal the cooling hose 4071 between them, when the forward extrusion ring 4081 is separated from the cooling baffle ring 407, the extrusion ring 4081 close to the mouth continues to rotate, the cooling medium in the cooling hose 4071 can be extruded and dropped onto the cutting head 403, so as to cool and lubricate the cutting head 403, thereby forming quantitative lubrication, having simple and reliable structure, and improving the convenience of use;
the arc length of an arc formed by the circle centers of the two adjacent extrusion columns 408 and the circle centers of the positioning rollers 406 is smaller than that of the inner wall of the cooling baffle ring 407; in short, by such a design, the cooling hose 4071 can be guaranteed to be always pressed to be sealed by the pressing ring 4081, and the cooling medium is prevented from being scattered on the injection molding plate 000;
the inside of the cutting block 402 is provided with an air blowing channel 409, the side wall of the cutting block 402 close to the positioning roller 406 is provided with a plurality of air blowing outlets 4091 which are arranged with the same radius as the extrusion column 408, the side wall of the connecting block 404 is provided with an air blowing inlet 4092, the air blowing outlets 4091 are communicated with the air blowing inlet 4092 through the air blowing channel 409, the air blowing outlets 4091 are provided with air blowing columns 4093 in a sliding manner, the end parts of the air blowing columns 4093 close to the air blowing channel 409 are integrally provided with blocking rings 4094 with the radius larger than that of the air blowing outlets 4091, the circumferential side wall of the air blowing columns 4093 is provided with two communicated air blowing holes 4095, the air blowing holes 4095 close to the positioning roller 406 are always exposed out of the air blowing outlets 4091, the edge edges of the contact end parts of the extrusion column 408 and the air blowing columns 4093 are chamfered, wherein when the extrusion column 408 rotates to the air blowing columns 4093, the extrusion column 408 pushes the air blowing columns 3, and the air blowing holes 4095 far away from the positioning roller 406 extend into the air blowing channel 409; when the extrusion column 408 leaves the air blowing column 4093, the blocking ring 4094 is pushed by the air in the air blowing flow passage 409 to be attached to the air blowing outlet 4091; in short, the air blowing outlet 4091 and the air blowing inlet 4092 are communicated through the air blowing channel 409, and an air source can be connected to the air blowing inlet 4092 so that the air blowing outlet 4091 can spray cooling air; furthermore, the blocking ring 4094 can prevent the air blowing column 4093 from sliding out of the air blowing outlet 4091, and the air pressure in the air blowing channel 409 can keep the air blowing column 4093 to have a tendency of sliding out of the air blowing outlet 4091, so that when the air blowing column 4093 is not extruded, the blocking ring 4094 is attached to the air blowing outlet 4091, and the air blowing outlet 4091 is closed; further, when the extrusion column 408 rotates, the end of the extrusion column 408 can push the air blowing column 4093 of the cutting head 403 in the working state, so that the air blowing holes 4095 are communicated with the air blowing channel 409 and the outside, so that the air is blown to the surface of the injection molding plate 000; furthermore, the rotating position of the positioning roller 406 can be cooled by rotating and adjusting the air blowing holes 4095 of the air blowing columns 4093 in the non-working state to the rotating position of the opposite positioning roller 406, the structure is simple and reliable, and the use convenience is improved.
Example two:
as shown in fig. 1-7, the present invention also includes a process for preparing an injection molded plate 000 using a delivery device, comprising:
s1, stacking injection molding plates 000 which are subjected to injection molding, and splicing the injection molding plates into a stack by using a support plate 301 and a clamping plate 302;
s2, placing the stacked injection molding plates 000 above the conveying belt 204 through the matching of the mounting strip 3011 and the mounting groove 3041;
s3, orderly conveying the injection molding plate 000 to the cutting head 403 through the conveying belt 204;
s4, scraping burrs of the edge at the top of the injection molding plate 000 by the edge of the cutting bevel 4031;
s5, the injection molding board 000 pushes the positioning needle 4061 to rotate, and meanwhile, the positioning needle 4061 leaves a plurality of rows of equidistant needle holes at the top of the injection molding board 000;
s6, the extrusion ring 4081 rotates to extrude the cooling medium in the cooling hose 4071 to the cutting head 403;
s7, the extrusion column 408 rotates to push the air blowing column 4093, and the surface of the injection molding plate 000 is blown by air close to the air blowing holes 4095 of the injection molding plate 000.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of the term does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.