Disclosure of Invention
Aiming at the defects of the prior art, the invention discloses a chain buckle, a manufacturing device and a manufacturing method thereof, and provides a matching buckle which can be used on most chain products in the existing market and can approach the design of a lobster buckle in appearance, the full-automatic mode on the production flow is more reasonable, the chain buckle forming part adopts the design of double-groove sliding fit, in terms of mechanics and convenient use, the method conforms to the use of products in different environments, and further because of the manufacture in a forging mode, the products are formed in connected concave-convex die cavities, the specification and the accuracy of each product are ensured, the traditional welding is replaced by utilizing a riveting mode, the reaction of metal in annealing stress is reduced, all processes are carried out under a controllable condition, the processes are accurately stopped in different stations, the process is carried out once or more than once, and the reasonability and the feasibility of the process are higher than those of similar products. The preparation device provided by the invention adopts integrated flow production, has high controllability, can automatically produce the chain buckle, and has the advantages of reasonable structure, wide development prospect and high efficiency and reasonability in the manufacturing method.
The specific technical scheme is as follows:
a kind of chain link, including the outer casing, the outer casing is equipped with the inner core, the outer casing is articularly connected with the inner core, outer casing and inner core are made of sheet material, the outer casing is the hook type, the head of the outer casing has elbows, the both sides of the outer casing have baffles standing inwards, the foot section of the baffle has bolt holes to hold the rivet, the inner side of the outer casing has the first groove, both sides of the first groove of the outer casing have baffles, form the first groove between baffle standing on the inner side of the outer casing and both sides, there are matched inner cores in the first groove of the outer casing, the head of the inner core locates at the inside of; the shell, the baffle, the first groove and the elbow are integrally formed into a sheet;
the inner core is provided with clamping plates which are erected inwards on two side edges, a second groove is formed in the inner side of the inner core, the second groove is formed between the inner side of the inner core and the clamping plates which are erected on the two side edges, the clamping plates are arranged on two sides of the second groove, the clamping plates are arranged in the first groove of the shell, a positioning hole is formed in the middle rear portion of each clamping plate, a positioning hole is formed in each clamping plate and corresponds to the bolt hole of the baffle, the positioning holes of the clamping plates are coaxial with the bolt holes of the baffle, the positioning holes of the clamping plates are hinged with the bolt holes of the baffle through rivets, chain holes are formed in the tail portions of the clamping plates, the tail end of the; the spring is arranged in the first groove and the second groove, one end of the spring props against the first groove of the shell, and the other end of the spring props against the second groove of the inner core; the inner core, the clamping plate and the second groove are integrally formed by sheets;
the head of the inner core is positioned at the inner side of the end part of the elbow of the shell, and the baffle of the shell, the head of the inner core and the elbow form a chain ring and a chain plate hanging hole.
A manufacturing device of a chain buckle comprises a rack, wherein a material conveying device is arranged on the rack and is connected with an inner core shearing and forging device G1, a shell shearing and forging device G2, a rivet forming device G4, a rivet inserting device G5, a rivet riveting device G6, a spring forming device G7, a spring guiding device G8 and an inner core closing-in device G9;
inner core shearing forging device G1 and outer shell shearing forging device G2: the device comprises a machine table, wherein the machine table is arranged on a machine frame, a die shearing plate is arranged above the machine table and connected with the machine table, a shearing rod mounting plate is arranged on the die shearing plate, a shearing template is arranged below the shearing rod mounting plate and matched with the die shearing plate, a guide pillar mounting plate is arranged on the shearing rod mounting plate, a guide pillar is arranged on the guide pillar mounting plate, a shearing rod is arranged on the shearing rod mounting plate, the bottom end of the guide pillar is connected with a shearing rod on the shearing rod mounting plate, a sheet bracket is arranged in the middle of the machine frame and positioned on the die shearing plate, the sheet bracket is connected with a bracket return device, a push rod is arranged on one side of the die shearing plate, a push rod groove is arranged in the die shearing plate, a shearing blanking device is arranged at the front end of the push rod groove, a shell shearing and forging device G2 further comprises an elbow shaping rod positioned on the die shearing plate, the elbow shaping, the shaping rod power slide block is arranged on one side of the die shearing plate, which is far away from the push rod;
spring forming device G7 includes the spring shaping connecting seat, is equipped with the spring on the spring shaping connecting seat and shears the sword, and the power guide pillar is connected at the spring shearing sword top, still is equipped with the spring shaping module in the spring shaping connecting seat, and the discharge end of sword is sheared to the spring shaping module connection spring, and the spring shaping module includes spring shaping die, and spring shaping die top is equipped with the spring shaping terrace die.
Further, the spring guide-in device G8 comprises a guide groove, the guide groove comprises an upper inclined surface and a lower inclined surface, the upper inclined surface is matched with the lower inclined surface, the feeding end of the guide groove is larger than the discharging end, and a spring push rod is arranged at the feeding port of the guide groove;
the inner core closing-in device G9 comprises a closing-in push rod, the closing-in push rod pushes a spring baffle to seal at the tail of the inner core, a concave arc angle matched with the tail of the inner core (the tail of a chain buckle) is arranged at the front end of the closing-in push rod, and the inner core closing-in device G9 further comprises a fixed pressing rod which fixes the inner core of a closing-in station.
Further, rivet forming device G4 includes three fixed plates, the pay-off slip table is connected to the fixed plate in right side, be equipped with press device and straightening guide wheel on the pay-off slip table, press device is close to the fixed plate in right side, the blank sword sets up in two fixed plates in the right, power guide pillar is connected to the blank sword top, be equipped with rivet ejector pin on the fixed plate in right side below the blank sword, be equipped with the ejection of compact push pedal between two fixed plates in the left side, form the discharge end between two fixed plate lower extremes in the left side, power guide pillar is connected at ejection of compact push pedal top, ejection of compact push pedal is located the one side that rivet ejector pin was kept away from to the blank sword, be equipped with the guide hole that matches with rivet ejector pin on the fixed plate in the middle.
Further, the rivet inserting device G5 is arranged on an assembling module, the assembling module comprises an assembling connecting plate, an assembling position is arranged in the middle of the assembling connecting plate, a shell push rod is arranged on one side of the assembling position of the assembling connecting plate, a shell shearing and forging device G2 is arranged on the side surface of the shell push rod, the front end of the shell push rod is matched with the shape of the shell, an inner core push rod is arranged on the other side of the assembling connecting plate, an inner core shearing and forging device G1 is arranged on the side surface of the inner core push rod, the front end of the inner core push rod is matched with the shape of the inner core, the rivet inserting device G5 is arranged above the assembling position of the assembling connecting plate, a discharging push rod is arranged on one side of the assembling connecting plate, which is perpendicular to;
rivet riveting device G6 includes the high frequency slip table, and the high frequency slip table includes slider, installs the riveting pole holder on the slider, and riveting pole holder one side is equipped with the riveting hammer stem, and the riveting hammer stem front end is the concave arc face.
Further, the manufacturing device also comprises a product detection device G10, the product detection device G10 comprises a high-frequency pressure head device, the high-frequency pressure head device is arranged on the machine frame, the high-frequency pressure head device comprises a pressure lever, a sensor is arranged on the pressure lever, and the product detection device G10 also comprises a push rod; the manufacturing device further comprises drilling equipment, the drilling equipment comprises a drill bit, the rear end of the drill bit is connected with a motor, the drill bit and the motor are installed on a drilling seat, and the drilling seat is installed on the sliding table device.
Further, the material conveying device comprises a sliding table device, the sliding table device comprises a sliding table base, a limiting plate is arranged on one side of the sliding table base, two dampers are arranged below the limiting plate and connected with the sliding table base, the two dampers are respectively located on two sides of the bottom of the limiting plate, a sliding table is arranged on the sliding table base, a sliding table cylinder piston rod is connected with the sliding table, and a universal clamping seat is arranged above the sliding table; a limiting block is arranged on the sliding table and positioned on one side of the limiting plate, and the limiting block can abut against the limiting plate; the limiting block limits the sliding distance of the sliding table on the sliding table base through the limiting plate.
Further, the rivet insertion device G5 comprises a sliding table device, a rivet rod clamping seat is mounted on a universal clamping seat of the sliding table device, a guide rod is arranged on one side of the rivet rod clamping seat, the rivet insertion device G5 further comprises a rivet receiving seat, a rivet inlet is formed in the rivet receiving seat, a leading-in hole is formed below the rivet inlet, the leading-in hole is matched with the guide rod, a fixing groove for a shell and an inner core assembly is formed in the side face of the leading-in hole in the rivet receiving seat, and a positioning guide rod is arranged on one side, far away from the leading-.
A manufacturing method of a zipper fastener comprises the following steps:
preparing a group of controllable power devices, connecting devices and transmission devices, including but not limited to: the constant-speed motor, the variable-frequency motor and the servo motor are used as hydraulic power sources, and one group of the constant-pressure gear pump, the variable pump and the plunger pump comprises more than one group, and an independent servo valve or a flow valve, an overflow valve and a reversing valve controlled by an electromagnetic valve;
the controllable power device, the connecting device and the transmission device form a material conveying device, the material conveying device is used for conveying the sheet materials to the shell shearing and forging device G2 and the inner core shearing and forging device G1 respectively, the material conveying device adopts a cam driver additionally provided with a material pressing device or a material ejecting device for transmission, a damper is additionally arranged on the material pressing device 56 of the material conveying device, the materials in the working procedure are balanced, and the materials work under constant tension;
the sheet material conveyed to the inner core shearing and forging device G1 and the shell shearing and forging device G2 is pressed downwards through a guide post below a guide post mounting plate, a shearing and pressing template below a shearing and pressing rod mounting plate is driven to descend, the shearing and pressing template is matched with a die shearing plate, a shell and an inner core are formed by utilizing designed male die and female die cavity spaces, and a sheet material bracket ensures that the material is not obstructed by a formed three-dimensional part in the drawing and feeding process, so that the forging process keeps constant pressure and has a demolding effect; in a shell shearing and forging device G2, when a shearing rod is at a bottom dead center, an elbow shaping rod is pushed, the pressure and the tapping process are carried out by a control unit to form an elbow part of a shell, a pushing rod groove is arranged in a shearing plate of a die, and then the pushing rod pushes the shaped shell and an inner core to respectively fall from a shearing blanking device;
the formed shell and the formed inner core falling from the shearing and blanking device are received by using a material receiving station clamping seat, the material receiving station clamping seat comprises an additionally arranged inner groove spring adjusting device, and the formed shell and the formed inner core workpiece fall into grooves matched in radian and move to the next working procedure under the action of a material conveying device;
the method comprises the following steps that 1, a workpiece is connected to a material receiving station clamping seat, an index plate is rotated to a drilling station, drilling is carried out by using drilling equipment, a motor in the drilling equipment moves on a sliding table device, the motor drives a drill bit to drill the workpiece 1, a workpiece 2 with a transition hole is obtained, and the stroke is controlled by a damper;
determining the No. 2 workpiece with the correct transition hole position, using a shell push rod and an inner core push rod to respectively move the shell and the inner core to the stations of a rivet insertion device G5, using a clamp arranged on a sliding table device to clamp the inner core push rod or the shell push rod, and after the inner core enters the set station of the shell, using a pressing piece device to fix the No. 3 workpiece on the stations;
the rivet forming device G4 straightens the wire rod and guides the wire rod through the guide wheel, and the wire rod sent into the cutting knife by the sliding table device is cut, the rivet support formed by the cut wire rod is pushed into the side surface of the guide hole at the lower part of the cutting knife, the rivet push rod pushes the rivet support into the guide hole, and the rivet support is pushed out by the discharge push plate of the rivet forming device G4 and falls, and the advancing direction of the rivet support is the same as the to-be-installed hole positions of the outer shell and the inner core in the rivet inserting device G5;
the rivet is received in a rivet inserting device G5, a rivet support is pushed into the front end of a guide rod, a control unit instructs a push rod to move forward towards the guide rod, the rivet support enters the connecting and assembling position of the outer shell and the inner core in the rivet inserting device G5 under constant resistance, and after the rivet support is pushed, the push rod and the guide rod synchronously return;
the method comprises the following steps that rivets are led into a No. 3 workpiece, then an index plate is rotated to a working module station of a rivet riveting device G6, the index plate moves to a station of a rivet inserting device G5 according to the instruction of a control unit, riveting hammer rods correspond to two sides of the rivets to be formed of the No. 4 workpiece, the No. 4 workpiece is riveted through the riveting hammer rods by a shell and an inner core, and the rivet riveting device G6 returns;
the material conveying device conveys the wire rods to the spring forming device G7, the spring shearing knife cuts the wire rods, then the material conveying device continues to convey the wire rods, the cut wire rods are pushed to the spring forming module and are formed by forging and pressing through a concave-convex die with a designed shape, the formed springs are pushed in from the inlet of the guide groove of the spring guide-in device G8, the outlet of the guide groove is butted to the opening at the tail part of a No. 4 workpiece, a spring push rod is pushed, the springs are inserted into the space between the first groove of the shell and the second groove of the inner core, and the compressed springs are naturally opened after leaving the guide groove;
the graduated disk rotates to inner core binding off device G9, and No. 5 work piece tails are matchd to the binding off push rod of inner core binding off device G9, and No. 5 work pieces are fixed to fixed depression bar, close up by the spring baffle of binding off push rod to the inner core, and inner core binding off device G9 returns the journey afterwards, and No. 5 work pieces are accomplished the assembly, and the chain link gets into material conveyor in order, other processes such as completion packing.
Furthermore, after the inner core closing device G9 closes, the chain buckle enters the product detection device G10 from the material conveying device, the inner core of the chain buckle is subjected to opening and closing tests by the pressure rod of the product detection device G10, the opening and closing performance of the chain buckle after the spring is installed on the chain buckle is analyzed by the sensor, a push rod is used for pushing out the assembly line of products with unqualified opening and closing performance, and the qualification rate of the products is guaranteed.
Furthermore, a dust absorption and air cooling nozzle is arranged on the sliding table device, so that the metal powder is recycled, and the low temperature in the working procedure is ensured.
The invention is mainly used on the retaining ring of the current mainstream fashion chain product, the product is close to the annular spring fastener in weight, the product is better than the existing product in the aspect of convenient use, the product can be removed only by pressing in the button of the inner core when the chain fastener is released, and the product can be buckled only by pressing in the chain ring or the chain plate at the opening and closing position in the process of buckling the chain ring; in the developing market, particularly the market mainly based on thousand-foot gold, the sale is generally based on weight as a pricing base, sellers generally consider that the built-in base metal and gold should not be priced together, so that the chain buckle in the mode has certain resistance to being pushed, the mood of consumers is also changed in the high-speed development of the market, the market is gradually accepted as a part of the structure of an artwork, the relative weight is very light, and unreasonable cost is not paid due to the weight of a spring. The invention takes the factors into consideration, utilizes mature 14-18K gold materials in the market to manufacture spring wires, enables the specification of product materials to be uniform, and eliminates the worry about the pricing mode in the market.
The invention replaces the structural mode of the original similar design, changes the three-dimensional shape of the material in the forming process by forging and pressing, and effectively enhances the strength of the product, thereby reducing the rigid structure formed by thicker materials. The aim of keeping the whole product materials consistent is fulfilled by selecting the spring material and using the mature noble metal at present, so that the recovery loss and the regeneration process are reduced, the riveting is used for replacing the welding in the process, the problem of the metal in the annealing process is avoided, and the brightness and the rigidity of the metal are greatly enhanced; the use mode is optimized, and the inner core is not required to be pressed in the buckling opening to be naturally buckled; and a new chain buckle forming method is synchronously combined, the 2D limit is generated by punching the chain buckle made of the sheet material, the structural strength and the appearance attractiveness of the chain buckle are enhanced by a 3D pressing forming mode, and the complexity of the traditional manufacturing procedure of the sheet material chain buckle and the process defects in an automatic production procedure are overcome.
The hydraulic power source of the invention achieves controllable speed and controllable pressure intensity through the servo motor and the pressure sensor, the effects can be achieved only through middle and small-sized mode structural equipment, the selection of the die holder and the operation of the forming action are all on the same connecting module, through arranging a multi-angle and multi-direction power device, the horizontal sliding and the control of the coordinate position, through the feeding device, the semi-finished product to be assembled is transferred to a working procedure station according to a set track, and through the mechanical arm which comprises but is not limited to the servo motor, the stepping motor, the linear motor, the rack motor and the pneumatic device as power, the position of the workpiece to be assembled in the clamping holder is controlled, and the workpiece to be assembled is completed by the transmission sliding table and the guide rail, the difficulty and the cost of the whole equipment for processing precise parts are reduced, the clamping holder design is utilized, through the feeding device, and the controllable capability of the servo motor and the, the process instruction input by the control unit increases larger development space to a controllable degree, and then the optimization of the technology can be exerted by matching the operation of mechanical arm mold taking and mold filling through the position coordinate positioning and the arrangement on the clamping seat.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Referring to fig. 1, the invention relates to a chain buckle (chain buckle), which comprises a shell 11, wherein an inner core 12 is arranged on the shell 11, the shell 11 is hinged with the inner core 12, the shell 11 and the inner core 12 are made of sheet materials, the shell 11 is in a hook shape, the head of the shell 11 is provided with an elbow 17, two side edges of the shell 11 are provided with inward-standing baffles 15, the tail of each baffle 15 is provided with a bolt hole for accommodating a rivet 16, the inner side of the shell 11 is provided with a first groove 14, two sides of the first groove 14 of the shell 11 are provided with the baffles 15, a first groove 14 is formed between the inner side of the shell 11 and the baffles 15 standing on the two side edges, the first groove 14 of the shell 11 is internally provided with the matched inner core 12, and the; the shell 11, the baffle 15, the first groove 14 and the elbow 17 are integrally formed into a sheet.
The inner core 12 is provided with inward vertical clamping plates 19 on two sides, the inner side of the inner core 12 is provided with a second groove, a second groove is formed between the inner side of the inner core 12 and the clamping plates 19 with two vertical sides, the clamping plates 19 are arranged on two sides of the second groove, the clamping plates 19 are arranged in the first groove 14 of the shell 11, the middle rear part of each clamping plate 19 is provided with a positioning hole, the clamping plates 19 are provided with positioning holes corresponding to the bolt holes of the baffle 15, the positioning holes of the clamping plates 19 are coaxial with the bolt holes of the baffle 15, the positioning holes of the clamping plates 19 are hinged with the bolt holes of the baffle 15 through rivets 16, the tail parts of the clamping plates 19 are provided with chain holes 21, the tail end of the inner core 12 is provided with a spring baffle 22, the outer wall of each; the spring 20 is arranged in the first groove 14 and the second groove, one end of the spring 20 props against the first groove 14 of the shell 11, and the other end of the spring 20 props against the second groove of the inner core 12; the inner core 12, the clamping plate 19 and the second groove are integrally formed by sheets.
The head of the inner core 12 is positioned at the inner side of the end part of the elbow 17 of the shell 11, and the baffle 15 of the shell 11, the head of the inner core 12 and the elbow 17 enclose a chain ring and a chain tag hanging hole.
When the chain buckle (chain buckle) is used, one end of a chain link or a chain plate is connected into the chain buckle at the tail part of the clamping plate 19, when the chain buckle needs to be worn, the other end of the chain link or the chain plate is pressed on an inner core of the chain buckle, the chain link or the chain plate can enter the shell elbow 17 to be buckled, and when the chain buckle is released, the chain link or the chain plate can be taken out to be removed by pressing the button of the inner core 12.
The embodiment is a manufacturing device of a chain buckle, which comprises a frame, wherein a material conveying device is arranged on the frame, and the material conveying device is connected with a shell shearing and forging device G2, a core shearing and forging device G1, a rivet forming device G4, a rivet inserting device G5, a spring forming device G7, a spring guiding device G8, a rivet riveting device G6 and a core closing device G9.
This embodiment link manufacturing installation's material conveyor, including rotatory assembly line and slip table device, rotatory assembly line includes graduated disk, cam drive, synchronizing wheel carousel, still including a set of and the bull head rotary joint more than a set of, installs a plurality of stations on the graduated disk, and each station can set up according to the technology demand, or drilling equipment, or product detection device G10.
The sliding table device comprises a sliding table base 31, a limiting plate 32 is arranged on one side of the sliding table base 31, two dampers 33 are arranged below the limiting plate 32, the dampers 33 are connected with the sliding table base 31, the two dampers 33 are respectively positioned on two sides of the bottom of the limiting plate 32, a sliding table 37 is arranged on the sliding table base 31, a sliding table cylinder 34 is arranged on the sliding table base 31, a piston rod of the sliding table cylinder 34 is connected with the sliding table 37, and a universal clamping seat 35 is arranged above the sliding table 37; a limiting block 39 is arranged on the sliding table 37, the limiting block 39 is positioned on one side of the limiting plate 32, and the limiting block 39 can abut against the limiting plate 32; the stopper 39 limits the sliding distance of the slide table 37 on the slide table base 31 via the stopper plate 32.
The shell shearing forging device G2 and the inner core shearing forging device G1: comprises a machine table, the machine table is arranged on a machine frame, a die shearing plate 42, 42 'is arranged above the machine table, the die shearing plate 42, 42' is connected with the machine table, a shearing rod mounting plate 43, 43 'is arranged on the die shearing plate 42, 42', a shearing template 44, 44 'is arranged below the shearing rod mounting plate 43, 43', the shearing template 44, 44 'is matched with the die shearing plate 42, 42', a guide pillar mounting plate 45, 45 'is arranged on the shearing rod mounting plate 43, 43', a guide pillar is arranged on the guide pillar mounting plate 45, 45 ', a shearing rod is arranged on the shearing rod mounting plate 43, 43', the bottom end of the guide pillar is connected with the shearing rod on the shearing rod mounting plate 43, 43 ', a sheet bracket 46, 46' is arranged in the middle part of the machine frame, the sheet bracket 46, 46 'is positioned on the die shearing plate 42, 42', a bracket return device 47, 47 'is connected with the bracket return device 47', a push rod is arranged on one side, the die shear plate 42, 42 'is internally provided with a push rod groove 49, 49', the front end of the push rod groove 49, 49 'is provided with a shear blanking device 50, 50', the shell shearing and forging device G2 also comprises an elbow shaping rod 51, the elbow shaping rod 51 is positioned on the die shear plate 42, 42 ', the elbow shaping rod 51 is connected with a shaping rod power slide block 38, and the shaping rod power slide block 38 is arranged on one side of the die shear plate 42, 42' far away from the push rod.
Rivet forming device G4 includes three fixed plates, the pay-off slip table is connected to the fixed plate in right side, be equipped with press device 56 and straightening guide wheel 55 on the pay-off slip table, press device 56 is close to the fixed plate in right side, blank cutter 61 sets up in two fixed plates on the right side, power guide pillar is connected at blank cutter 61 top, be equipped with rivet ejector tie rod 62 on the fixed plate in right side below blank cutter 61, be equipped with ejection of compact push pedal 63 between two fixed plates on the left side, form the discharge end between two fixed plate lower extremes on the left side, power guide pillar is connected at ejection of compact push pedal 63 top, ejection of compact push pedal 63 is located one side that blank cutter 61 kept away from rivet ejector tie rod 62, be equipped with the guide hole 64 that matches with rivet ejector tie rod 62 on the fixed plate in the middle, rivet ejector tie.
The rivet inserting device G5 is arranged on an assembling module, the assembling module comprises an assembling connecting plate 71, an assembling position is arranged in the middle of the assembling connecting plate 71, a shell push rod 72 is arranged on one side of the assembling position of the assembling connecting plate 71, a shell shearing and forging device G2 is arranged on the side surface of the shell push rod 72, the front end of the shell push rod 72 is matched with the shape of the shell 11, an inner core push rod 73 is arranged on the other side of the assembling position of the assembling connecting plate 71, an inner core shearing and forging device G1 is arranged on the side surface of the inner core push rod 73, the front end of the inner core push rod 73 is matched with the shape of the inner core 12, a rivet inserting device G5 is arranged above the assembling position of the assembling connecting plate 71, a discharging push rod 75 is arranged on one side, away from the discharging push rod 75, of the shell push.
Rivet riveting device G6 includes the high frequency slip table, and the high frequency slip table includes slider, installs riveting pole holder 81 on the slider, and riveting pole holder 81 one side is equipped with riveting hammer stem 82, and riveting hammer stem 82 front end is the concave arc face.
Spring forming device G7 includes spring forming connecting seat 83, be equipped with spring on the spring forming connecting seat 83 and cut sword 84, the power guide pillar is connected at spring cutting sword 84 top, still be equipped with spring forming module in the spring forming connecting seat 83, spring forming module connects the discharge end that the sword 84 was cut to the spring, spring forming module includes spring forming die 85, spring forming die 85 top is equipped with spring forming terrace die 86, material conveyor is connected to the feed end of spring forming connecting seat 83, press device 56 and straight guide wheel 55 are connected to the feed end of spring forming connecting seat 83, press device 56 is close to spring forming connecting seat 83.
Spring guiding device G8 includes guide slot 90, and guide slot 90 includes inclined plane 91 and lower inclined plane 92, goes up inclined plane 91 and lower inclined plane 92 cooperation, and guide slot 90 pan feeding end is greater than the discharge end, and guide slot 90 pan feeding mouth is equipped with spring push rod 93.
The inner core closing-in device G9 comprises a closing-in push rod, the closing-in push rod pushes the spring baffle 22 to seal the tail of the inner core 12, a concave arc angle matched with the tail of the inner core 12 (the tail of the chain buckle) is arranged at the front end of the closing-in push rod, and the inner core closing-in device G9 further comprises a fixed pressing rod which fixes the inner core 12 at the closing-in station.
Still can set up product detection device G10, product detection device G10 includes the high frequency pressure head device, and the high frequency pressure head device is installed in the frame, and the high frequency pressure head device includes the depression bar, installs the sensor on the depression bar, and product detection device G10 still includes the push rod.
In addition, the rivet insertion device G5 of the present embodiment includes a sliding table device, a rivet rod holder 94 is mounted on the universal holder 35 of the sliding table device, a guide rod 95 is disposed on one side of the rivet rod holder 94, the rivet insertion device G5 further includes a rivet receptacle 96, a rivet inlet is disposed on the rivet receptacle 96, a lead-in hole 97 is disposed below the rivet inlet, the lead-in hole 97 is matched with the guide rod 95, a fixing groove for a combination of the housing 11 and the core 12 is disposed on a side surface of the lead-in hole 97 of the rivet receptacle 96, and a positioning guide rod is disposed on a side of the rivet receptacle 96 away from the.
The chain buckle changes the use structure, changes the bidirectional control into the unidirectional control, adopts the design of double-groove integer arc fishing on the structures of the shell 11 and the inner core 12, better accords with the mechanical and gravity standards of products, can reach the standard closed shape and reasonable chain ring moving space after being combined, combines and connects the shell 11 and the movable inner core 12 by a rivet pin riveting mode, and is manufactured by the material with the same specification as the shell 11 and the movable inner core 12 by the built-in spring 20. The invention comprises a power device, a shell, an inner core die and a frame; the frame is provided with at least one set of a material feeding device, a material correcting device, an independent spring forming device G7 (spring manufacturing device), a rivet forming device G4 (rivet manufacturing device), at least one set of a rivet inserting device G5 (vibration feeding disc device), and the like. The machine frame is provided with a plurality of stations, each station corresponds to a corresponding functional device, and the material conveying device is sequentially connected with a forging and stamping shearing device, a vertical forging and stamping device, a horizontal forging and stamping device, a shearing and correcting device, a rotating device, a claw disc clamping device, a rivet station punching and guiding device, a wire straightening device, a rivet cutting device, a rivet forging device, a rivet inserting device G5 (a rivet feeding device), a spring forming device G7 (a spring manufacturing device), a spring leading-in device G8, an inner core closing device G9 and a product opening and closing testing device G10 (a product detecting device G10 (a functional product detecting device G10)). The invention optimizes the similar products by the most humanized design and the mode of a new process, reasonably reduces the weight, adopts a brand-new simple use mode, and adopts a design mode, a manual flow form and a full-automatic manufacturing method which are combined mechanically.
FIG. 13 is an assembly schematic (assembly process block diagram) of the present invention:
g1 inner core shearing forging device: g1-1 forging and shearing (shearing correction), G1-2 vertically forging (vertically forging female die), and G1-3 inner core molding;
g2 case shearing forging device (case forming device): g2-1 shaping (vertical forging), G2-2 elbow forming, G2-3 shell forming;
g3 cartridge positioning device: pushing the formed outer shell into the holder, and then pushing the formed inner core into the outer shell;
g4 rivet forming device, forming rivet leading-in holder;
g5 rivet insertion device: inserting a rivet into the holder positioning device;
g6 rivet riveting device: riveting a rivet;
g7 spring forming device: forming a spring;
g8 spring introduction device: pushing the formed spring into the inner core;
g9 inner core closing device: closing the inner core spring seal plate;
g10 product detection device: and (5) opening and closing test of the product.
This embodiment is a method for manufacturing a fastener (chain fastener), the method including:
1, preparing a set of controllable powerplants, connections, transmissions, including but not limited to: the constant speed motor, inverter motor and servo motor are as hydraulic power source, and the power that the load includes is not limited to 0.1 ~ 68 Mpa's hydraulic energy: the group of constant pressure gear pumps, variable pumps, plunger pumps and independent servo valves or solenoid valves controlled flow valves, overflow valves and reversing valves with more than one group of different flow rates and different pressures, including but not limited to: the control unit of the flow sensor, pressure sensor, contain the air-cooled or water-cooled condenser, the hydraulic pump station that the oil level oil temperature sensing device forms, and the pump station can adopt a series of or more than a series of outputs according to the design scheme, meet the requirements for environmental protection and energy conservation;
2, respectively conveying the sheet to a shell shearing and forging device G2 and an inner core shearing and forging device G1 by a material conveying device through a controllable power device, wherein the material conveying device adopts a cam driver additionally provided with a material pressing device or a material ejecting device for transmission, and a damper 33 is additionally arranged on a material pressing device 56 of the material conveying device, so that the material works under constant tension;
3, the sheet material conveyed to the housing shearing and forging device G2 and the inner core shearing and forging device G1 is pressed down by the guide posts below the guide post mounting plates 45 and 45 ', the shearing and pressing templates 44 and 44' below the shearing and pressing rod mounting plates 43 and 43 'are driven to descend, the shearing and pressing templates 44 and 44' are matched with the die shearing templates 42 and 42 ', the housing 11 and the inner core 12 are formed by utilizing the designed male die and female die cavity space, the processing requirements of different forming angles of the product are executed by using a transmission module which comprises but is not limited to angle attaching power increased due to the process requirements, the attached sheet material brackets 46 and 46' ensure that the material is not obstructed by the formed three-dimensional part in the drawing and conveying process, devices which comprise but are not limited to springs, nitrogen cylinders, die glue and the like are arranged at the bottom of the female die cavity, so that the forging process keeps constant pressure and the demoulding effect, in addition, the housing shearing and forging device G2 is attached, when the shearing and pressing rod is at the bottom dead center, the elbow shaping rod 51 is pushed, the control unit carries out the pressure intensity and the tapping process to form the elbow 17 part of the shell, then, the pushing rod grooves 49 and 49 ' are arranged in the shearing plates 42 and 42 ' of the die, and the pushing rod pushes the formed shell 11 and the inner core 12 to fall from the shearing and blanking devices 50 and 50 ' respectively;
4, using a material receiving station holder to receive the formed shell 11 and the formed inner core 12 falling from the shearing blanking device 50 and 50', wherein the material receiving station holder comprises an additional inner groove spring adjusting device, and the formed shell 11 and the formed inner core 12 fall into the grooves matched in radian and move to the next working procedure under the action of a material conveying device;
5, connecting the No. 1 workpiece on the material receiving station clamping seat, rotating the dividing disc to a drilling station, performing a drilling process by using drilling equipment, moving a motor 24 in the drilling equipment such as a micro high-speed motor or a pneumatic drilling machine on a sliding table device, sending an instruction to work by a control unit, driving a drill 23 by the motor 24 to drill the No. 1 workpiece to obtain the No. 2 workpiece with a transition hole, controlling the stroke by a damper 33, and keeping the rotation speed of 6000-18000 rpm of the micro high-speed motor or the pneumatic drilling machine to drive the drill 23 so as to ensure that the transition hole of each workpiece is kept at a designed coordinate position;
6, determining the number 2 workpiece with the correct transition hole position, respectively moving the shell 11 and the inner core 12 to the stations of a rivet inserting device G5 by using a shell push rod 72 and an inner core push rod 73, clamping the inner core push rod 73 or the shell push rod 72 by using a clamp arranged on a sliding table device, operating the clamp at a connected tail groove, sending a working instruction by a control unit, and fixing the number 3 workpiece on the stations by using a pressing device after the inner core enters the set station of the shell;
7, the rivet forming device G4 straightens the wire rod by the wire rod straightening and straightening wheel 55, and sends the wire rod into the cutting knife 61 by the sliding table device to cut the wire rod, a rivet support formed by the cut wire rod is pushed into the side surface of the guide hole 64 at the lower part of the cutting knife 61, the rivet support is pushed into the guide hole 64 by the rivet pushing rod 62, and then the rivet support is pushed out by the discharging push plate 63 of the rivet forming device G4 to fall, and the advancing direction of the rivet support is the same as the to-be-installed hole positions of the shell 11 and the inner core 12 in the rivet inserting device G5;
8, carrying out bearing on the cut rivet in a rivet inserting device G5, pushing the rivet support into the front end of a guide rod 95 through one or more groups of sliding table devices including but not limited to pneumatic, electric and mechanical transmission devices and a pusher with an independent power device after bearing, commanding the pusher to move the guide rod 95 forwards by a control unit, enabling the rivet support to enter a connecting and assembling position of the shell 11 and the inner core 12 in the rivet inserting device G5 under constant resistance, and synchronously moving the pusher and the guide rod 95 back after pushing;
9, introducing rivets into a No. 3 workpiece, then transferring an index plate to a working module station of a rivet riveting device G6, moving the rivet riveting device G6 to a station of a rivet inserting device G5 by components including but not limited to lifting and axial movement of pneumatic, electric and mechanical transmission devices according to the instructions of a control unit, enabling riveting hammer rods 82 to correspond to two sides of the rivets to be formed of the No. 4 workpiece, outputting 1500-8000 times/minute hammering power by the rivet riveting device G6 through additionally arranged high-frequency impact power and electric or pneumatic devices, designing a reasonable radian at the front end of the riveting hammer rod 82, enabling the rivets to be formed at two ends of the riveting device according to grooves in the design, riveting the No. 4 workpiece by the shell 11 and the inner core 12 through the riveting hammer rods 82, and returning the rivet riveting device G6;
10, at the same time, the material conveying device conveys the wire to the spring forming device G7, the spring shearing knife 84 cuts the wire, then the material conveying device continues to convey the wire, the cut wire is pushed to the spring forming module, the cut wire is forged and formed by a concave-convex die with a designed shape, the formed spring 20 is pushed in from the inlet of the guide groove 90 of the spring introducing device G8, the outlet of the guide groove 90 is butted to the opening of the tail part of the workpiece (the tail part position of the inner core 12) after 9, the spring push rod 93 is pushed, the spring 20 is inserted into the space between the first groove 14 of the shell 11 and the second groove of the inner core 12, the compressed spring naturally opens after leaving the guide groove 90, and then the rest of the workpieces return;
11, the graduated disk turns to inner core closing device G9, and the closing push rod of inner core closing device G9 matches No. 5 work piece tails (inner core 12 tail), and No. 5 work pieces are fixed to the fixed depression bar, close up by closing push rod to the spring baffle 22 of inner core 12, and inner core closing device G9 returns journey afterwards, and No. 5 work pieces accomplish the assembly, and the chain link gets into material conveyor in order, accomplishes other processes such as packing.
In addition, the chain buckle can also be detected, the chain buckle enters the product detection device G10 from the material conveying device, a high-frequency opening and closing test is carried out on the inner core of the chain buckle by a pressure rod in a high-frequency pressure head device of the product detection device G10, after the set opening and closing times, the opening and closing performance of the chain buckle after a spring is installed is analyzed by a sensor, and a push rod is used for pushing out the production line of products with unqualified opening and closing performance, so that the qualification rate of the products is ensured.
In § 5, a dust absorption and air cooling nozzle is further arranged on the sliding table device, so that metal powder is recovered, the low temperature in the working procedure is guaranteed, and the sliding table device is safer and more environment-friendly.
The invention is in the manufacturing material process of the fastener, especially a mode and manufacturing approach of making up with rational mechanics design mode, increasing structural strength and facilitating the button, make the fastener of the invention can be in the same or similar type the weight is lightest; the improved chain buckle design reduces the manufacturing procedures of the manufacturing equipment, reduces the precision requirement, reduces the price of the equipment, can adopt the production line for automatic production, has high production efficiency, is matched with a reasonable manufacturing method, improves the manufacturing efficiency and has high yield.
Further, a method for manufacturing a fastener (chain fastener) of the present invention comprises:
the hydraulic equipment with controllable stroke and pressure is used as main power, a power device which comprises but is not limited to pneumatic electric and mechanical transmission is used as main station working configuration, sensing devices such as different inductors and light senses are used for achieving the purpose of controllable processes, and the full-automatic manufacturing function is achieved through the concept of the integrated flow production line, the invented product comprises but is not limited to the similar products (chain buckles) which circulate in the market, the product is light in weight, the spring 20 is arranged in the product, the appearance, the use mechanics and the convenience are comprehensively optimized, and the method comprises the following steps:
(S1), feeding device: including but not limited to: the power load is 0.1-68 Mpa, and a group of constant pressure gear pumps, variable pumps and plunger pumps with more than one group of different flow rates and different pressures; a group or more than one group of servo or electromagnetic valve controlled flow valves, overflow valves, throttle valves, reversing valves and oil way filtering devices are independently or parallelly arranged; including but not limited to: the control units of the flow sensor and the pressure sensor are used for operating the workpiece requirements of different standards; the closed circulation system is internally provided with an air-cooled or water-cooled condenser, an oil level and temperature and each component power sensing device and an ERP system to form a hydraulic function module or a hydraulic pump station, and the pump station can adopt one group or more than one group of output according to a design scheme so as to meet the requirements of environmental protection and energy saving;
(S2), the transmission: the feeding device with controllable power comprises but is not limited to a mechanical cam type transmission device which is arranged by taking a servo motor stepping motor pneumatic sliding table and a mechanical power mode as main power and additionally provided with a material pressing or ejecting device, a tension damper 33 is additionally arranged at the pushing end of a material, the material in the working procedure is balanced to work under constant tension, and a sensing device is additionally arranged to provide a signal to return to a control unit;
(S3), mold station: the device adopts a stepping continuous pushing shell die, utilizes designed male die and female die cavity space for forming, comprises but is not limited to a transmission module with angle power partially increased due to process requirements, executes processing requirements on different forming angles of a product, is additionally provided with a material supporting lifting device in the die, ensures that the material is not obstructed by a formed three-dimensional part in the pulling and feeding process, is provided with a guide hole in the die, ensures that a station can work in a set position, is provided with but not limited to a spring, a nitrogen cylinder, die glue and the like at the bottom of the female die cavity, is used as a hydraulic cylinder with a stroke pressure adjustable sensor device, has a mechanical reciprocating slide rail and a convex peach-shaped transmission device, and the like, keeps constant pressure in the forging process of the product and has a demolding function, and pushes an elbow slider device when a shaping rod (pressure rod) is at a lower dead point, the control unit is used for carrying out the pressure intensity and the propelling process;
(S4), case manufacturing: the shell shearing and forging device G2 comprises but not limited to a hydraulic cylinder with stroke pressure adjustable and attached with a sensor device, a mechanical reciprocating slide rail, a convex peach type transmission device and the like as main power setting, a step type continuous shell die of the device, a transmission module with angle power increased by part of the process requirements and used for executing the processing requirements of different forming angles of a product, a material supporting and lifting device is additionally arranged in the die to ensure that the material is not obstructed by a formed solid part in the drawing and feeding process, a guide hole is arranged in the die to ensure that a station can work in a set position, a spring, a nitrogen cylinder, die glue and the like are arranged at the bottom of the concave die cavity and used as a product to keep constant pressure in the forging process and attached with a demoulding function, and the shaping rod is shaped according to a set radian when the shaping rod is at a bottom dead center, the control unit is used for carrying out the pressure intensity and the propelling process;
(S5), shell pushing: through a material receiving station clamping seat, an inner groove spring adjusting device is additionally arranged, a program processing station which is entered by a shell mold push rod is formed by a 4-shaft combination formed by transmission parts including but not limited to a sliding table air cylinder, a material pressing device, a guide rail, a pulley and the like, a workpiece enters a female die cavity matched in radian, a pressure lever keeps a constant pressure stroke, and a bent position fixing air cylinder attached to the clamping seat pushes the workpiece into a preset station to perform the next process;
(S6), a drilling step: through one or more groups of power including but not limited to a pneumatic sliding table, an electric sliding rail linear motor rack motor or a mechanical transmission type, a control unit sends out an instruction to work, a micro high-speed motor or a pneumatic drilling machine is arranged on the sliding table, a fixture controlled by a damper 33 keeps the rotating speed of not less than 6000-18000 rpm, a drilling process is carried out on a coordinate station fixed in a fixture seat, a transition hole of each workpiece is kept at a designed coordinate position, a dust absorption and air cooling nozzle is arranged at a working position, and low temperature and metal powder recovery in the working process are guaranteed;
(S7), core fabrication: inner core shearing and forging device G1, including but not limited to hydraulic cylinder with stroke pressure adjustable sensor device, mechanical reciprocating slide rail, convex peach type transmission device, etc. as the main power setting, the device adopts step-by-step continuous pushing inner core die, using designed convex and concave die cavity space for forming, including but not limited to transmission module with angle power increased by process requirement, executing the processing requirement for different forming angles of product, in the die a material supporting lifting device is set to ensure that the material is not obstructed by formed solid part in the process of drawing, guide hole is set in the die to make the station carry out drilling process in the set position, the bottom of the concave die cavity is set with but not limited to spring, nitrogen cylinder and die glue, etc. to make the product keep constant pressure in the forging process and with demoulding function, when the shaping rod is at the bottom dead point, the shaping rod is shaped according to the set radian, the control unit is used for carrying out the pressure intensity and the propelling process;
(S8), the inner core is pushed into the housing positioning assembly holder: a clamp seat positioning device G3, which is mounted on the sliding table through one or more groups of clamps including but not limited to pneumatic, electric and mechanical transmission devices, the clamp device ensures the precision of zero position and station by the damper 33 with adjustable stroke, the clamp operates in a fixed tail slot, and the control unit sends the working order of the clamp, when the inner core 12 enters the set station of the shell 11, the guide rod mounted on the clamp seat by the pneumatic or electric and mechanical transmission device passes through the shell 11 and the inner core 12, and fixes the work of two products, the pressing device on the clamp seat fixes the positioned and assembled workpiece on the clamp seat downwards, and then the workpiece enters the next working procedure;
(S9), a rivet setting module: the rivet inserting device G5, the index plate is transferred to the station coordinate device of the rivet forming module, the rivet manufacturing module with the independent wire rod corrector device is received on the forming module, the cut rivet is pushed into the guide hole in the rivet forming module, and the rivet enters the fixed assembly position of the shell 11 and the inner core 12 under the constant resistance by one or more groups of sliding tables including but not limited to pneumatic, electric and mechanical transmission devices and a pusher with an independent power device, the cut rivet is pushed into the front end of the guide rod combined by the workpiece, the pusher is instructed by the control unit to return to the front guide rod, the rivet enters the fixed assembly position of the shell 11 and the inner core 12 under the constant resistance, the pusher and the guide rod return synchronously, and the power of the fixed workpiece is kept in the working state;
(S10), rivet setting module: the riveting device G6 is characterized in that an index plate rotates to a working module station for entering rivet riveting, an independent riveting device moves to a station of a workpiece holder module according to the instruction of a control unit by components including but not limited to pneumatic, electric and mechanical transmission devices, the components perform lifting and axial movement, a guide rod device synchronously comprises X-X1 stations, the riveting module outputs hammering power of not less than 1500-8000 times/minute by the electric or pneumatic devices through additional high-frequency impact power, a reasonable radian is designed at the front end of a hammering rod, two ends of a rivet in riveting are formed according to a designed groove, a shell 11 and an inner core 12 rivet a No. 4 workpiece through a rivet rod, and the riveting module returns;
(S11), the spring push-in module: the index plate is turned to a spring entering module station, a spring generator (a spring forming device G7) of a stand-alone wire correcting device is attached, feeding and cutting are carried out by a pneumatic, electric and mechanical transmission device, forging and forming are carried out by a concave-convex die with a designed shape, the formed spring 20 is pushed into a guide cylinder through a device of a guide cavity, the size of the inlet end of a riveted workpiece is compressed to be in accordance with the size of the inlet end of the riveted workpiece according to the designed angle of the guide cylinder, the compressed and formed spring 20 is pushed into the riveted workpiece through a corresponding position of a workpiece holder butted with the spring generator by an electric or pneumatic push rod (a spring introducing device G8), the compression spring 20 naturally opens after leaving the guide cylinder, and the push rod, the fixed workpiece device and the spring entering module return;
(S12), closing the inner core baffle: an inner core closing device G9, wherein the dividing disc is turned to a workpiece closing module station, a spring baffle plate 22 at the inlet end of an inner core 12, in which a spring 20 is arranged, in a workpiece holder is closed by a pneumatic, electric and mechanical transmission device, and is pressed in by an angled female die according to a preset angle, so that the spring 20 is fixed in a chain buckle (chain buckle), the appearance of the whole product is beautified, and the closing module returns;
(S13), open-close test: the product detection device G10, index plate transfer to test the product work piece, include but not limited to the pneumatic, electronic and mechanical drive unit to the product inner core 12 switch contact surface that has already finished closing up in the work holder, carry on the open and shut test of the high frequency by the sensor attached with sensing device, the control unit keys in the number of times to need testing to open and shut, open and shut the performance after the sensor signal analysis spring 20 of installation, distinguish the quality of inferior quality and finished product, and link up the relevant data with ERP, achieve the industrial 4.0 mode of detecting a dragon of full-automatic production.
The invention has the following advantages:
firstly, hydraulic power replaces the current mechanical structure mode, and the material is molded into a 3D structure from a 2D structure mode under the state that the flow or pressure is controllable.
Secondly, under the condition of not increasing the weight of the product, the support point of the product is changed by utilizing the forging and pressing function, so that the tensile strength and the torsional strength are ensured, and the weight of the product is effectively reduced.
And the outer shell and the inner core of the chain buckle are molded in a groove mode in the connected mold frame through pressure, so that the specifications of the outer shape and the inner core can not only be controlled, but also additional technological effects can be added on the surface of the outer shell, the unification of the specifications and the weight of the product can be ensured, and the detection difficulty of the molded chain buckle is reduced.
And fourthly, because the chain buckle is assembled under the riveting condition, the aesthetic feeling of the appearance is improved, and the welding quality and the influence of deformation and softening of metal at high temperature are avoided.
The chain buckle is made of the same material with the mature elasticity at present, so that the cost control problem of valuation and recovery is reduced, and the product with high purity requirement on metal materials has larger market development potential.
And sixthly, because of the design of the chain buckle and related brand new process flows, the chain buckle enters a thin and light chain series with the appearance similar to that of the lobster buckle and the weight close to that of an annular spring buckle, and a brand new technical project praise is established for the development of the chain buckle of the thin chain.
The invention only needs to press the buckling part to the buckled object to complete buckling when buckling the chain ring or the closed tag, and is different from the procedure that the buckling can be realized only by pressing a switch in the current market.
These seven major factors make it fully feasible to create new link models for manufactured products using this invention. The series of products of the invention are reinjected with new elements. The change is that different design schemes are provided on the basis of some existing schemes, related part shapes are manufactured and improved by a new thinking, modules with different functions are formed by common precision original pieces on the market, a precision indexer receives station instructions output by a control unit under a controllable power condition, and products can be manufactured fully automatically by combining the flow of a special sensing and induction device control process with the compiling of a control program and an internet connection system.
From the implementation example, the structure and the rigid pivot of the product are redesigned, the traditional thinking of the original power is changed, the plasticity of the material is increased through the forging function of the hydraulic power, the material is changed from two-dimensional to three-dimensional through one or more processes, so that the cast inner structure effect is achieved in the final product, the surface meets the beautifying requirements of the pressing function and additional workers, and more importantly, the material of the built-in spring in the traditional mode is changed, so that the specification of the product is unified, the problems in the links of sale and recovery are reduced, and the acceptance of the product in the market is expanded; the whole design thinking is changed, and through numerical control and the communication function on the internet, the production cost can be reduced in the aspect of energy conservation, and the load of each part can be effectively controlled. The new processing technology can achieve the purpose of comprehensively transforming and optimizing the products, and a brand new route is provided for future chain buckle series, so that the energy is saved, the labor force is reduced, the quality is changed, and the product standardization is enhanced.
Because a new thinking mode can be realized after the numerical control technology is advanced in the future, the mode can have larger development space. Other than in the examples, or where otherwise indicated, all numbers expressing quantities of forms of reaction conditions, and so forth used in the specification and claims are to be understood as being modified in all instances by the term "about". Accordingly, unless indicated to the contrary, the numerical parameters set forth in the foregoing specification and attached claims are approximations that may vary depending upon the desired properties sought to be obtained by the present invention. At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claims, each numerical parameter should be construed in light of the number of significant digits and ordinary rounding approaches.
Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the invention are approximations, the numerical values set forth in the specific examples set forth above are reported as precisely as possible. Any numerical value, however, inherently contains certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
The above examples only show one embodiment of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.