CN106077168A - A kind of plate bending method of intelligent numerical control bender - Google Patents
A kind of plate bending method of intelligent numerical control bender Download PDFInfo
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- CN106077168A CN106077168A CN201610511268.0A CN201610511268A CN106077168A CN 106077168 A CN106077168 A CN 106077168A CN 201610511268 A CN201610511268 A CN 201610511268A CN 106077168 A CN106077168 A CN 106077168A
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- feeding
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- workpiece
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- leading screw
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/002—Positioning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
- B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
- B21D43/105—Manipulators, i.e. mechanical arms carrying a gripper element having several degrees of freedom
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
- B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
- B21D43/11—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers for feeding sheet or strip material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/18—Advancing work in relation to the stroke of the die or tool by means in pneumatic or magnetic engagement with the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/20—Storage arrangements; Piling or unpiling
- B21D43/22—Devices for piling sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/004—Bending sheet metal along straight lines, e.g. to form simple curves with program control
Abstract
The invention discloses the plate bending method of a kind of intelligent numerical control bender, belong to bender technical field.The present invention includes frame, workbench, apparatus for bending and base, and described frame, apparatus for bending are arranged on base, also include stop gauge, blanking device, feeding device, positioner, pay-off and digital control system；Workpiece is delivered on workbench through feeding device, and is clamped by blanking device and move on the table, completes workpiece X-direction location；Stop gauge and positioner coordinate, and complete workpiece Y direction location；Pay-off conveying workpiece to processing stations carries out Bending Processing, and controls workpiece and rotate and carry out polygon bending, machines rear blanking device and pushes workpiece and leave workbench；Described digital control system completes the Automated condtrol of whole Forging Process.Work efficiency of the present invention is high, and automaticity is high, it is possible to realize full-automatic polygon forward and reverse bending of workpiece, easy to use, can fully liberate labour force.
Description
Technical field
The invention belongs to bender technical field, more particularly, it relates to the plate bending of a kind of intelligent numerical control bender
Method.
Background technology
Bender is a kind of machine that thin plate can carry out bending, is mainly used in metal blank processing industry.Plate is rolled over
Bender uses simple mould metal blank just can carry out the straight-line bending of various angle, to obtain complex-shaped metallic plate
Material product, simple to operate, operating cost is low, is the first-selected machinery that plate particularly large plate carries out panel beating at present,
It is applied widely.
Bender is when processing workpiece, it usually needs complete feeding, location, bending and four steps of blanking, current folding
Bender operation mostly uses mode manually to complete the operations such as feeding, location and blanking, and this operating type has processing
Efficiency is low, the shortcomings such as security incident, product quality difference easily occur, particularly when bending part area is relatively big, heavier-weight time, to behaviour
Number and the muscle power of making personnel are proposed requirement, and tradition wrap direction generally requires between bending and the most repeatedly corrects,
Extremely inefficient.
Existing intelligent numerical control bender, such as China Patent No. ZL 201520797080.8, authorized announcement date is 2016
March 2, invention and created name is: a kind of full-automatic numerical control bender；The fixing peace in the front portion of this application case bender mounting seat
Equipped with pay-off, pay-off includes bracing frame, material conveying platform, cylinder, push rod and material storage mechanism, and bracing frame is fixedly installed in
The front end face of mounting seat, material conveying platform is fixedly installed in the end face of bracing frame, and the front portion of material conveying platform end face has been wholely set
Boss, the front end of boss is horizontally installed with cylinder, and the piston rod of cylinder is installed with push rod, the left and right of material conveying platform end face
Two ends have dovetail groove, and dovetail groove is positioned at the outside of cylinder, the adjustable installation being installed on material conveying platform of material storage mechanism
In groove；This application case is to install pay-off in bender base front portion, utilizes cylinder to push workpiece and completes feeding operation, but
This application case needs manually single workpiece to be placed into pay-off and adjusting nut carries out location and the locking of workpiece, works as workpiece
After single Edge Bend operation completes, need manual adjusting nut carry out workpiece blanking or again adjusting nut carry out workpiece other
The bending operation on limit；Therefore, disclosed in this application case, bender work efficiency is the lowest, and useless realizes the full-automatic of workpiece
Feeding operation and the abundant liberation of labour force.
And for example China Patent No. ZL201520559360.5, authorized announcement date is on January 27th, 2016, invention and created name
For: full-automatic numerical control bender；This application case includes frame, is provided with pay-off, the apparatus for bending cooperated bottom frame
And blanking device；Described pay-off includes that material conveying platform, material conveying platform are provided with feeding cylinder, feeding cylinder and feeding push pedal
Connect；Described apparatus for bending includes that work platforms, lower work platforms and pressurized cylinder, upper work platforms connect with the piston of pressurized cylinder
Connecing, lower work platforms is corresponding with material conveying platform to be connected, and upper work platforms is provided with pressurized cylinder and upper mold, and lower work platforms is provided with
The lower mold coordinated with upper mold；Blanking device includes blanking cylinder and blanking slideway.This application case utilizes cylinder to drive feeding push pedal
Promote substrate material, and the mode combining backboard position signalling completes feeding operation, utilize cylinder to drive blanking push pedal to promote
Bending part completes blanking operation, but this application case is not provided with the material hold down gag in bending operation, and material is the simplest
Being pushed into from feed box between the upper and lower cutter of bender, bending angle is wayward, and this mode can only be less to size
Material carries out monolateral one direction bending.
Understanding in conjunction with above-mentioned analysis, existing bender, automaticity is low, and major part needs mode manually complete
Become the operations such as feeding, location and blanking, it is impossible to fully liberate labour force, be badly in need of a kind of intelligent numerical control bender, it is achieved workpiece
Full-automatic polygon forward and reverse bending.
Summary of the invention
1. invention to solve the technical problem that
It is an object of the invention to overcome existing bender automaticity low, major part needs mode manually complete
Become the operations such as feeding, location and blanking, it is impossible to the problem fully liberating labour force, it is provided that the plate of a kind of intelligent numerical control bender
Material bending method；The intelligent numerical control bender work efficiency of the present invention is high, and automaticity is high, it is possible to realize workpiece complete from
Dynamic polygon forward and reverse bending, easy to use, can fully liberate labour force.
2. technical scheme
For reaching above-mentioned purpose, the technical scheme that the present invention provides is:
A kind of intelligent numerical control bender of the present invention, including frame, workbench, apparatus for bending and base, described frame,
Apparatus for bending is arranged on base, also includes stop gauge, blanking device, feeding device, positioner, pay-off and numerical control
System；Workpiece is delivered on workbench through feeding device, and is clamped by blanking device and move on the table, completes workpiece
X-direction positions；Stop gauge and positioner coordinate, and complete workpiece Y direction location；Pay-off conveying workpiece is extremely
Processing stations carries out Bending Processing, and controls workpiece and rotate and carry out polygon bending, machines rear blanking device and pushes processing
Part leaves workbench；Described digital control system completes the Automated condtrol of whole Forging Process.
Further, described stop gauge, blanking device and positioner are arranged on workbench, stop gauge and
Blanking device is arranged in parallel, and positioner and stop gauge, blanking device are perpendicular；Described feeding device is arranged at work
The side of station, pay-off is arranged at below workbench.
Further, described stop gauge includes backgauge servomotor, striker plate connecting shaft and striker plate, and backgauge is watched
Taking motor to be connected with one end of striker plate connecting shaft, striker plate is arranged in striker plate connecting shaft at equal intervals.
Further, described blanking device includes blanking leading screw, lower trolley, blanking servomotor, blanking servo
Motor drives blanking leading screw to rotate, and lower trolley moves axially along blanking leading screw；Clamping machinery it is provided with on described lower trolley
Hands and clamping manipulator proximity switch.
Further, described feeding device includes that feeding support, feeding X-axis control device, feeding Y-axis controls dress
Put, feeding Z axis controls device and adsorbent equipment, and feeding X-axis controls device and is fixedly installed in feeding cradle top, feeding Y-axis control
Device processed and feeding X-axis control device and are mutually perpendicular in the horizontal direction；Feeding Z axis controls device and controls device with feeding Y-axis
In the vertical direction is mutually perpendicular to；Described adsorbent equipment includes sucker stand and is installed on the air sucking disc bottom sucker stand,
Adsorbent equipment controls device with feeding Z axis and is connected, and feeding X-axis controls device, feeding Y-axis controls device and feeding Z axis controls dress
Put cooperation transmission control adsorbent equipment to move in the x, y, z-directions.
Further, described feeding X-axis controls device and includes feeding X-axis servomotor, feeding X-axis leading screw, feeding X
Axle slide block, feeding X-axis driven by servomotor feeding X-axis leading screw rotates, and feeding X-axis slide block moves axially along feeding X-axis leading screw；Institute
Stating feeding Y-axis control device to be fixedly installed on feeding X-axis slide block, this feeding Y-axis controls device and includes feeding Y-axis servo electricity
Machine, feeding Y-axis leading screw, feeding Y-axis slide block, feeding Y-axis driven by servomotor feeding Y-axis leading screw rotates, and feeding Y-axis slide block is along upper
Material Y-axis leading screw moves axially；Described feeding Z axis controls device and is connected with feeding Y-axis slide block, and this feeding Z axis controls device and includes
Feeding Z axis servomotor, feeding Z axis leading screw, feeding Z axis slide block, feeding Z axis driven by servomotor feeding Z axis leading screw rotates, on
Material Z axis slide block moves axially along feeding Z axis leading screw；Described sucker stand is connected with feeding Z axis slide block.
Further, described positioner include positioning sliding block, location leading screw angular wheel, location servomotor,
Location servomotor angular wheel, location leading screw, arrange two location leading screws, positioning filament in the left and right sides of location servomotor
Thick stick angular wheel is meshed with location servomotor angular wheel, and every location leading screw is provided with positioning sliding block；Described fixed
Being provided with location proximity switch, location spring, block rubber on the slide block of position, block rubber is connected with positioning sliding block by location spring,
Location proximity switch is fixedly installed on positioning sliding block.
Further, described pay-off includes that feeding X-axis controls device, feeding Z axis controls device and whirler
Structure, feeding X-axis controls device and includes feeding X-axis leading screw, feeding X-axis slide block, feeding X-axis servomotor, feeding X-axis servomotor
Driving feeding X-axis leading screw to rotate, feeding X-axis slide block moves axially along feeding X-axis leading screw；Feeding Z axis controls device fixed installation
On feeding X-axis slide block, it is perpendicular with feeding X-axis control device in the vertical direction that feeding Z axis controls device, feeding Z axis control
Device processed includes feeding Z axis servomotor, feeding Z axis slide block, feeding Z axis leading screw, feeding Z axis driven by servomotor feeding Z axis
Leading screw rotates, and feeding Z axis slide block moves axially along feeding Z axis leading screw；Described rotating mechanism include electric magnet, electric magnet connecting rod and
Electric magnet servomotor, electric magnet connecting rod one end is fixing with electric magnet to be connected, and the other end is connected with electric magnet servomotor, electromagnetism
Ferrum servomotor is fixedly installed on feeding Z axis slide block.
Further, described frame includes frame rotary shaft, top sword, upper mold hydraulic cylinder, and frame is revolved by frame
Rotating shaft is connected with base, and described top sword is installed on frame work pieces process end bottom by nut, and upper mold hydraulic cylinder two ends are then divided
It is not connected with frame, base；Described apparatus for bending includes c-type knife rest, Z axis hydraulic cylinder, secondary rotary shaft, main rotating shaft, X-axis
Hydraulic cylinder rotary shaft, X-axis hydraulic cylinder, c-type knife rest is connected with main rotating shaft by secondary rotary shaft, and described Z axis hydraulic cylinder two ends are divided
Not being connected with c-type knife rest, base, X-axis hydraulic cylinder one end is connected with main rotating shaft by X-axis hydraulic cylinder rotary shaft, the other end
It is connected with base.
A kind of method utilizing numerical control bender to carry out plate bending of the present invention, the steps include:
Step one, for workpiece shape, regulate top sword position and gap, workpiece blank stored to feeding and prop up
In frame；
Step 2, feeding device air negative pressure absorption workpiece is put to the clamping manipulator of lower trolley, and blanking is little
Car transport workpiece, to workbench correct position, completes workpiece X-direction location, descends trolley, feeding device return subsequently；
Step 3, stop gauge control striker plate rotate paramount go out table plane, positioning sliding block push workpiece to gear
Flitch contacts, and completes workpiece Y direction location；
Step 4, the electric magnet of control pay-off position to workpiece center, and electromagnetic adsorption workpiece, subsequently
Striker plate, positioning sliding block return；
Step 5, solenoid actuated workpiece, to processing stations, carry out Bending Processing, and control workpiece rotate carry out many
Edge Bend；
Step 6, machine after, electric magnet dead electricity depart from workpiece, lower trolley push workpiece leave workbench,
Descending trolley, electric magnet return subsequently, full-automatic polygon forward and reverse Forging Process of single-piece work part terminates.
3. beneficial effect
Use the technical scheme that the present invention provides, compared with existing known technology, there is following remarkable result:
(1) a kind of intelligent numerical control bender of the present invention, it is possible to realize Sheet Metal Processing part and automatically capture and be automatically positioned
Expect that automatic bending rotates and the function of many Edge Bends automatically, it is not necessary to manual intervention, can automatically run, easy and simple to handle, real
Show the abundant liberation of labour force, effectively prevent the generation of security incident；
(2) a kind of intelligent numerical control bender of the present invention, is moved on the table by blanking device clamping workpiece, completes
Workpiece X-direction positions；Stop gauge and positioner coordinate, and complete workpiece Y direction location；Pay-off conveying adds
Workpiece to processing stations carries out Bending Processing, and controls workpiece and rotate and carry out polygon bending, it is not necessary to artificial the most repeatedly adjustment adds
The position of workpiece, accurate positioning, one-time-reach-place, both reduce cost, decrease again the time of workpiece location；
(3) a kind of intelligent numerical control bender of the present invention, its stop gauge, blanking device, positioner, feeding device and
The action of pay-off is used uniformly across driven by servomotor guide screw movement and realizes, it is simple to be uniformly controlled, and simple in construction, fault rate
Low, sheet metal bending efficiency is high；
(4) a kind of intelligent numerical control bender of the present invention, uses the mode of hydraulic circuit combining with digital control system, can be to not
Carrying out automatic angle compensation with the workpiece of material thickness, the angle information of material information and desire bending can be entered by user intuitively
Edlin and input, the Forging Process of its subjob is all automatically performed by digital control system, improves machining accuracy and work effect
Rate；
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of numerical control bender in the present invention；
Fig. 2 is the top view of numerical control bender in the present invention；
Fig. 3 is the sectional view of numerical control bender in the present invention；
Fig. 4 is the perspective view of feeding device in the present invention；
Fig. 5 is the front view of feeding device in the present invention；
Fig. 6 is the perspective view of blanking device in the present invention；
Fig. 7 is the perspective view of stop gauge in the present invention；
Fig. 8 is the structural representation of striker plate in the present invention；
Fig. 9 is the perspective view of positioner in the present invention；
Figure 10 is the structural representation of pay-off in the present invention；
Figure 11 is the structural representation of hydraulic circuit system in the present invention；
Figure 12 is digital control system module map in the present invention.
Label declaration in figure:
1, frame；11, frame rotary shaft；12, top sword；13, upper mold hydraulic cylinder；
2, stop gauge；21, backgauge servomotor；22, striker plate connecting shaft；23, striker plate；231, material blocking block is installed
Plate；232, material blocking block；233, striker plate connecting shaft through hole；
3, blanking device；31, blanking leading screw；32, lower trolley；321, clamping manipulator；322, clamping manipulator is close
Switch；33, blanking servomotor；
4, feeding device；41, feeding support；42, storing front apron；43, storing right baffle-plate；44, storing platform；45, on
Material X-axis controls device；451, feeding X-axis servomotor；452, feeding X-axis leading screw；453, feeding X-axis slide block；46, feeding Y-axis
Control device；461, feeding Y-axis servomotor；462, feeding Y-axis leading screw；463, feeding Y-axis slide block；47, feeding Z axis controls dress
Put；471, feeding Z axis servomotor；472, feeding Z axis leading screw；473, feeding Z axis slide block；48, adsorbent equipment；481, sucker props up
Frame；482, air sucking disc；
5, workbench；51, lower push type broach；
6, positioner；61, positioning sliding block；611, location proximity switch；612, location spring；613, block rubber；62, fixed
Position leading screw angular wheel；63, location servomotor；64, location servomotor angular wheel；65, location leading screw；
7, apparatus for bending；71, c-type knife rest；711, upper slitter；712, lower cutter；72, Z axis hydraulic cylinder；73, secondary rotary shaft；74、
Main rotating shaft；75, X-axis hydraulic cylinder rotary shaft；76, X-axis hydraulic cylinder；
8, base；
9, pay-off；91, feeding X-axis controls device；911, feeding X-axis leading screw；912, feeding X-axis slide block；913, send
Material X-axis servomotor；92, feeding Z axis controls device；921, feeding Z axis servomotor；922, feeding Z axis slide block；923, feeding
Z axis leading screw；93, rotating mechanism；931, electric magnet；932, electric magnet connecting rod；933, electric magnet servomotor；
1a, liquid level sensor；1b, temperature sensor；1c, filter；1d, hydraulic pump；1e, pressure transducer；1f, cut-off
Valve；1g, Pressure gauge；1h, locking loop；1i, pressure difference switch；1j, balanced loop；1k-1o, hydraulic control valve.
Detailed description of the invention
For further appreciating that present disclosure, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
In conjunction with Fig. 1 and Fig. 2, a kind of intelligent numerical control bender of the present embodiment, including frame 1, stop gauge 2, blanking dress
Put 3, feeding device 4, workbench 5, positioner 6, apparatus for bending 7, base 8, pay-off 9 and digital control system.Described machine
Frame 1, apparatus for bending 7 are arranged on base 8, and workbench 5 is fixing with base 8 to be connected, stop gauge 2, blanking device 3 and location dress
Putting 6 to be arranged on workbench 5, stop gauge 2 and blanking device 3 are arranged in parallel, positioner 6 and stop gauge 2, blanking
Device 3 is perpendicular；Described feeding device 4 is arranged at the side of workbench 5, and pay-off 9 is arranged at below workbench 5.Add
Workpiece is delivered on workbench 5 through feeding device 4, and is clamped on workbench 5 by blanking device 3 and moves, and completes workpiece X-axis
Direction positions；Stop gauge 2 and positioner 6 coordinate, and complete workpiece Y direction location；Pay-off 9 carries workpiece extremely
Processing stations carries out Bending Processing, and controls workpiece and rotate and carry out polygon bending, machines rear blanking device 3 and pushes processing
Part leaves workbench 5；Described digital control system completes the Automated condtrol of whole Forging Process.
Described frame 1 includes frame rotary shaft 11, top sword 12, upper mold hydraulic cylinder 13, and frame 1 is by frame rotary shaft 11
Being connected with base 8, described top sword 12 is installed on frame 1 work pieces process end bottom by nut, and workbench 5 left upper part is installed
Lower push type broach 51, upper mold hydraulic cylinder 13 two ends is had to be connected with frame 1, base 8 the most respectively.
Referring to Fig. 7 and Fig. 8, described stop gauge 2 includes backgauge servomotor 21, striker plate connecting shaft 22 and striker plate
23, backgauge servomotor 21 is connected with one end of striker plate connecting shaft 22, and striker plate 23 is arranged at striker plate connecting shaft at equal intervals
On 22.Described striker plate 23 includes material blocking block installing plate 231, material blocking block 232, striker plate connecting shaft through hole 233, described striker plate
23 are connected by striker plate connecting shaft through hole 233 is fixing with striker plate connecting shaft 22, and described material blocking block 232 is by nut and backgauge
Block installing plate 231 connects.
Referring to Fig. 6, described blanking device 3 includes blanking leading screw 31, lower trolley 32, blanking servomotor 33, blanking
Servomotor 33 drives blanking leading screw 31 to rotate, and lower trolley 32 moves axially along blanking leading screw 31；On described lower trolley 32
It is provided with clamping manipulator 321 and clamping manipulator proximity switch 322.
Referring to Fig. 4 and Fig. 5, described feeding device 4 include feeding support 41, storing front apron 42, storing right baffle-plate 43,
Storing platform 44, feeding X-axis control device 45, feeding Y-axis controls device 46, feeding Z axis controls device 47 and adsorbent equipment 48,
Described storing front apron 42 is fixedly installed in the inside rear of feeding support 41, and storing right baffle-plate 43 is fixedly installed in feeding support
The left side, inside of 41, storing platform 44 is fixedly installed in the bottom surface of feeding support 41.
Feeding X-axis controls device 45 and is fixedly installed in feeding support 41 top, and feeding X-axis controls device 45 and includes feeding X
Axle servomotor 451, feeding X-axis leading screw 452, feeding X-axis slide block 453, feeding X-axis servomotor 451 drives feeding X-axis leading screw
452 rotate, and feeding X-axis slide block 453 moves axially along feeding X-axis leading screw 452.Feeding Y-axis controls device 46 and is fixedly installed in
On material X-axis slide block 453, feeding Y-axis controls device 46 and is mutually perpendicular in the horizontal direction with feeding X-axis control device 45.Feeding Y
Axle controls device 46 and includes feeding Y-axis servomotor 461, feeding Y-axis leading screw 462, feeding Y-axis slide block 463, feeding Y-axis servo
Motor 461 drives feeding Y-axis leading screw 462 to rotate, and feeding Y-axis slide block 463 moves axially along feeding Y-axis leading screw 462；Described feeding
Z axis controls device 47 and is connected with feeding Y-axis slide block 463, and feeding Z axis controls device 47 and controls device 46 vertically with feeding Y-axis
It is mutually perpendicular on direction.Feeding Z axis controls device 47 and includes feeding Z axis servomotor 471, feeding Z axis leading screw 472, feeding Z axis
Slide block 473, feeding Z axis servomotor 471 drives feeding Z axis leading screw 472 to rotate, and feeding Z axis slide block 473 is along feeding Z axis leading screw
472 move axially；Described adsorbent equipment 48 includes sucker stand 481 and is installed on the air sucking disc bottom sucker stand 481
482, sucker stand 481 is connected with feeding Z axis slide block 473, and feeding X-axis controls device 45, feeding Y-axis controls device 46 and feeding
Z axis controls device 47 and coordinates transmission control adsorbent equipment 48 to move in the x, y, z-directions.
Referring to Fig. 9, described positioner 6 includes positioning sliding block 61, location leading screw angular wheel 62, location servomotor
63, location servomotor angular wheel 64, location leading screw 65, arrange two positioning filaments in the left and right sides of location servomotor 63
Thick stick 65, location leading screw angular wheel 62 is meshed with location servomotor angular wheel 64, every location leading screw 65 is respectively provided with
There is positioning sliding block 61；Location proximity switch 611, location spring 612, block rubber 613, rubber it is provided with on described positioning sliding block 61
Block 613 is connected with positioning sliding block 61 by location spring 612, and location proximity switch 611 is fixedly installed on positioning sliding block 61.
Referring to Fig. 3, described apparatus for bending 7 includes c-type knife rest 71, Z axis hydraulic cylinder 72, secondary rotary shaft 73, main rotating shaft
74, X-axis hydraulic cylinder rotary shaft 75, X-axis hydraulic cylinder 76, described c-type knife rest 71 includes upper slitter 711 and lower cutter 712, described upper slitter
711 and lower cutter 712 is connected with described c-type knife rest 71 right side by nut, c-type knife rest 71 is by pair rotary shaft 73 and main rotation
Axle 74 connects, and described Z axis hydraulic cylinder 72 two ends are connected with c-type knife rest 71, base 8 respectively, and X is passed through in X-axis hydraulic cylinder 76 one end
Axle hydraulic cylinder rotary shaft 75 is connected with main rotating shaft 74, and the other end is connected with base 8.
Referring to Figure 10, described pay-off 9 includes that feeding X-axis controls device 91, feeding Z axis controls device 92 and rotates
Mechanism 93, feeding X-axis controls device 91 and includes feeding X-axis leading screw 911, feeding X-axis slide block 912, feeding X-axis servomotor 913,
Feeding X-axis servomotor 913 drives feeding X-axis leading screw 911 to rotate, and feeding X-axis slide block 912 axially moves along feeding X-axis leading screw 911
Dynamic；Feeding Z axis controls device 92 and is fixedly installed on feeding X-axis slide block 912, and feeding Z axis controls device 92 and controls with feeding X-axis
Device 91 in the vertical direction is perpendicular, and feeding Z axis controls device 92 and includes feeding Z axis servomotor 921, feeding Z axis slide block
922, feeding Z axis leading screw 923, feeding Z axis servomotor 921 drives feeding Z axis leading screw 923 to rotate, feeding Z axis slide block 922 edge
Feeding Z axis leading screw 923 moves axially；Described rotating mechanism 93 includes electric magnet 931, electric magnet connecting rod 932 and electric magnet servo
Motor 933, electric magnet connecting rod 932 one end is fixing with electric magnet 931 to be connected, and the other end is connected with electric magnet servomotor 933, electricity
Magnet servomotor 933 is fixedly installed on feeding Z axis slide block 922.
A kind of intelligent numerical control bender of the present embodiment, it is possible to realize Sheet Metal Processing part and automatically capture and be automatically positioned feeding
Automatically bending rotates and the function of many Edge Bends automatically, it is not necessary to manual intervention, can automatically run, easy and simple to handle, it is achieved that
The abundant liberation of labour force, effectively prevent the generation of security incident.Need not manually repeatedly adjust the position of workpiece, location
Accurately, one-time-reach-place, both reduced cost, decrease again workpiece location time, and its stop gauge 2, blanking device 3,
The action of positioner 6, feeding device 4 and pay-off 9 is used uniformly across driven by servomotor guide screw movement and realizes, it is simple to unified
Control, and simple in construction, failure rate is low, sheet metal bending efficiency is high.
Referring to Figure 12, described digital control system include computer, measuring unit, from controller, light-coupled isolation module, relay
Device, power amplifier module, hydraulic control valve and actuator, described measuring unit is by liquid level sensor, pressure transducer, temperature
Sensor, Hall element, grating scale and pressure difference switch composition, described from controller by counting module, A/D modular converter, number
Word processing module, servo controller and communication module composition, described actuator is by backgauge servomotor 21, blanking servomotor
33, feeding X-axis servomotor 451, feeding Y-axis servomotor 461, feeding Z axis servomotor 471, location servomotor 63, give
Material X-axis servomotor 913, feeding Z axis servomotor 921, electric magnet servomotor 933, electric magnet 931, Z axis hydraulic cylinder 72,
Upper mold hydraulic cylinder 13 and X-axis hydraulic cylinder 76 form, the signaling interface of described computer and communication module, the signal of servo controller
Interface is connected with each other, and the signaling interface of described communication module is connected with each other with the signaling interface of digital signal processing module, described liquid level
After the outfan of sensor, pressure transducer, temperature sensor and Hall element is converted to digital quantity by A/D modular converter
Being connected with the input of digital signal processing module, described grating scale is connected with the input of digital signal processing module by counting module,
Described pressure difference switch is connected with the input of digital signal processing module by light-coupled isolation module, the output of described digital signal processing module
End is connected with the input of electric magnet by relay, and the outfan of described digital signal processing module passes through power amplifier module and liquid
The input of pressure control valve is connected, the outfan of described hydraulic control valve and Z axis hydraulic cylinder 72, upper mold hydraulic cylinder 13 and X-axis liquid
The input of cylinder pressure 76 is connected, and the control interface of described servo controller is watched by backgauge servomotor 21, blanking with actuator
Take motor 33, feeding X-axis servomotor 451, feeding Y-axis servomotor 461, feeding Z axis servomotor 471, location servo electricity
Machine 63, feeding X-axis servomotor 913, feeding Z axis servomotor 921 interconnect mutually with the control interface of electric magnet servomotor 933
Connect.
The hydraulic circuit of the present embodiment includes liquid level sensor 1a, temperature sensor 1b, filter 1c, hydraulic pump 1d, pressure
Force transducer 1e, stop valve 1f, Pressure gauge 1g, locking loop 1h, pressure difference switch 1i, balanced loop 1j, hydraulic control valve 1k,
1l, 1m, 1n, 1o, the connected mode of each parts of hydraulic circuit is as shown in figure 11.The present invention uses hydraulic circuit combining with digital control system
Mode, the workpiece of different materials thickness can be carried out automatic angle compensation, user can be intuitively by material information and desire
The angle information of bending is edited and is inputted, and the Forging Process of its subjob is all automatically performed by digital control system, improves
Machining accuracy and work efficiency.
The work process of the present embodiment is:
1) after starting shooting, computer is first to liquid level sensor, pressure transducer, temperature sensor, Hall element, grating
Chi, pressure difference switch and servo controller detect, if be detected that position signalling is normal, the standby shape of the unimpeded entrance of data communication
State, on the contrary then report to the police；Then slide block, leading screw, gear, rotary shaft are lubricated by system；
2) for workpiece shape, regulate top sword 12 position and gap, workpiece blank is stored to storing platform
44；
3) recall from computer or the drawing of plate to be processed is drawn out at scene, click on after starting, empty by feeding device 4
Gas negative-pressure adsorption workpiece is put to the clamping manipulator 321 of lower trolley 32, and blanking servomotor 33 drives lower trolley
32 transport workpiece puts to workbench 5 correct position, and blanking servomotor 33 drives lower trolley 32 to return to initial position subsequently
(returning to initial position rear motor out of service), feeding device 4 return, now workpiece X-direction is accurately positioned；
4), while blanking servomotor 33 drives lower trolley 32 to transport workpiece, backgauge servomotor 21 drives backgauge
Plate 23 half-twist to material blocking block 232 exceeds workbench 5 plane；Instantly trolley 32 transports workpiece and puts to a certain district of workbench 5
Behind territory, location servomotor 63 drives positioning sliding block 61 to push workpiece to the motion of material blocking block 232 direction until positioning spring 612
After deforming upon shake-up location proximity switch 611 signal intensity, location servomotor 63 is out of service, can clamp in this direction
Workpiece makes it complete workpiece Y direction to be accurately positioned, and now workpiece is accurately positioned；
5) after positioning sliding block 61 and material blocking block 232 clamp workpiece, start feeding X-axis servomotor 913, feeding Z axis is watched
Taking motor 921, electric magnet servomotor 933, band motor magnet 931 positions to workpiece center and inhales workpiece electromagnetism
Attached, after workpiece is positioned electromagnetic adsorption completely, start 921 workpieces of feeding Z axis servomotor and be promoted to a certain height,
After workpiece is promoted to a certain height, startup location servomotor 63, backgauge servomotor 21 (making it invert) make simultaneously
Positioning sliding block 61 and striker plate 23 return to initial position (returning to initial position rear motor out of service)；
6) feeding X-axis servomotor 913, feeding Z axis servomotor 921, electric magnet servomotor 933 are started, by calculating
Organic electronic drawing parameter is delivered to workpiece between bender top sword 12 and lower push type broach 51, and last upper mold hydraulic cylinder 13 drives machine
Frame 1 moves downwardly to after downforce reaches setting value, and upper mold hydraulic cylinder 13 locks pressurize stop motion, Z axis hydraulic cylinder 72 and X-axis
Hydraulic cylinder 76 drives c-type knife rest 71 that workpiece is carried out bending；
7), after c-type knife rest 71 carries out bending to workpiece, upper mold hydraulic cylinder 13 drives frame 1 to stop after returning to initial position
Only, the most just completing a flexing movement, the rotation controlling electric magnet 931 can be processed many Edge Bends of part, bending
System constantly carries out above-mentioned action according to computer electronic drawing processing request can complete polygon forward and reverse bending of workpiece.
After work pieces process completes, electric magnet 931 dead electricity departs from workpiece, starts blanking servomotor 33 and drives lower trolley 32 to push workpiece
Leave workbench 5.After workpiece leaves workbench 5, start blanking servomotor 33, feeding X-axis servomotor 913, feeding Z axis
Servomotor 921, electric magnet servomotor 933 (reversion) make it drive lower trolley 32 and electric magnet 931 to return to initial position
(returning to initial position rear motor out of service), the most whole workpiece is processed complete.
Schematically being described the present invention and embodiment thereof above, this description does not has restricted, institute in accompanying drawing
Show is also one of embodiments of the present invention, and actual structure is not limited thereto.So, if the common skill of this area
Art personnel enlightened by it, in the case of without departing from the invention objective, designs and this technical scheme without creative
Similar frame mode and embodiment, all should belong to protection scope of the present invention.
Claims (10)
1. a plate bending method for intelligent numerical control bender, the steps include:
Step one, for workpiece shape, regulate top sword (12) position and gap, workpiece blank stored to feeding and prop up
In frame (41)；
In the clamping manipulator (321) that step 2, feeding device (4) air negative pressure absorption workpiece is put to lower trolley (32)
Between, lower trolley (32) transport workpiece, to workbench (5) correct position, completes workpiece X-direction location, and blanking is little subsequently
Car (32), feeding device (4) return；
Step 3, stop gauge (2) control striker plate (23) rotate paramount go out workbench (5) plane, positioning sliding block (61) push
Workpiece contacts to striker plate (23), completes workpiece Y direction location；
Step 4, the electric magnet (931) of control pay-off (9) position to workpiece center, and electromagnetic adsorption workpiece,
With back striker plate (23), positioning sliding block (61) return；
Step 5, electric magnet (931) drive workpiece to processing stations, carry out Bending Processing, and control workpiece and rotate and carry out
Many Edge Bends；
Step 6, machine after, electric magnet (931) dead electricity depart from workpiece, lower trolley (32) push workpiece leave work
Station (5), descends trolley (32), electric magnet (931) return subsequently, full-automatic polygon forward and reverse Forging Process of single-piece work part
Terminate.
The plate bending method of a kind of intelligent numerical control bender the most according to claim 1, it is characterised in that: used
Intelligent numerical control bender includes that frame (1), workbench (5), apparatus for bending (7) and base (8), described frame (1), bending fill
Put (7) to be arranged on base (8), it is characterised in that: also include stop gauge (2), blanking device (3), feeding device (4), determine
Position device (6), pay-off (9) and digital control system；Workpiece is delivered on workbench (5) through feeding device (4), and by blanking
It is upper mobile that device (3) is clamped in workbench (5), completes workpiece X-direction location；Stop gauge (2) and positioner (6) are joined
Close, complete workpiece Y direction location；Pay-off (9) conveying workpiece to processing stations carries out Bending Processing, and controls to add
Workpiece rotates and carries out polygon bending, machines rear blanking device (3) propelling movement workpiece and leaves workbench (5)；Described numerical control
System completes the Automated condtrol of whole Forging Process.
The plate bending method of a kind of intelligent numerical control bender the most according to claim 2, it is characterised in that: described gear
Material device (2), blanking device (3) and positioner (6) are arranged on workbench (5), stop gauge (2) and blanking device (3)
Arranged in parallel, positioner (6) and stop gauge (2), blanking device (3) are perpendicular；Described feeding device (4) is arranged
In the side of workbench (5), pay-off (9) is arranged at workbench (5) lower section.
4. according to the plate bending method of a kind of intelligent numerical control bender described in Claims 2 or 3, it is characterised in that: described
Stop gauge (2) include backgauge servomotor (21), striker plate connecting shaft (22) and striker plate (23), backgauge servomotor
(21) one end with striker plate connecting shaft (22) is connected, and striker plate (23) is arranged in striker plate connecting shaft (22) at equal intervals.
The plate bending method of a kind of intelligent numerical control bender the most according to claim 4, it is characterised in that: under described
Material device (3) includes blanking leading screw (31), lower trolley (32), blanking servomotor (33), and blanking servomotor (33) drives
Blanking leading screw (31) rotates, and lower trolley (32) moves axially along blanking leading screw (31)；It is provided with on described lower trolley (32)
Clamping manipulator (321) and clamping manipulator proximity switch (322).
The plate bending method of a kind of intelligent numerical control bender the most according to claim 5, it is characterised in that: described is upper
Material device (4) includes that feeding support (41), feeding X-axis control device (45), feeding Y-axis controls device (46), feeding Z axis controls
Device (47) and adsorbent equipment (48), feeding X-axis controls device (45) and is fixedly installed in feeding support (41) top, feeding Y-axis
Control device (46) to be mutually perpendicular in the horizontal direction with feeding X-axis control device (45)；Feeding Z axis controls device (47) with upper
Material Y-axis controls device (46) in the vertical direction and is mutually perpendicular to；Described adsorbent equipment (48) includes sucker stand (481) and installs
In the air sucking disc (482) of sucker stand (481) bottom, adsorbent equipment (48) controls device (47) with feeding Z axis and is connected, feeding
X-axis controls device (45), feeding Y-axis controls device (46) and feeding Z axis controls device (47) and coordinates transmission to control adsorbent equipment
(48) move in the x, y, z-directions.
The plate bending method of a kind of intelligent numerical control bender the most according to claim 6, it is characterised in that: described is upper
Material X-axis controls device (45) and includes feeding X-axis servomotor (451), feeding X-axis leading screw (452), feeding X-axis slide block (453),
Feeding X-axis servomotor (451) drives feeding X-axis leading screw (452) to rotate, and feeding X-axis slide block (453) is along feeding X-axis leading screw
(452) move axially；Described feeding Y-axis controls device (46) and is fixedly installed on feeding X-axis slide block (453), this feeding Y-axis control
Device processed (46) includes feeding Y-axis servomotor (461), feeding Y-axis leading screw (462), feeding Y-axis slide block (463), feeding Y-axis
Servomotor (461) drives feeding Y-axis leading screw (462) to rotate, and feeding Y-axis slide block (463) is axial along feeding Y-axis leading screw (462)
Mobile；Described feeding Z axis controls device (47) and is connected with feeding Y-axis slide block (463), and this feeding Z axis controls device (47) and includes
Feeding Z axis servomotor (471), feeding Z axis leading screw (472), feeding Z axis slide block (473), feeding Z axis servomotor (471) drives
Dynamic feeding Z axis leading screw (472) rotates, and feeding Z axis slide block (473) moves axially along feeding Z axis leading screw (472)；Described sucker
Support (481) is connected with feeding Z axis slide block (473).
The plate bending method of a kind of intelligent numerical control bender the most according to claim 7, it is characterised in that: described determines
Position device (6) includes positioning sliding block (61), location leading screw angular wheel (62), location servomotor (63), location servomotor
Angular wheel (64), location leading screw (65), arrange two location leading screws (65) in the left and right sides of location servomotor (63), fixed
Position leading screw angular wheel (62) is meshed with location servomotor angular wheel (64), and every location leading screw (65) is provided with
Positioning sliding block (61)；Location proximity switch (611), location spring (612), block rubber it is provided with on described positioning sliding block (61)
(613), block rubber (613) is connected with positioning sliding block (61) by location spring (612), the fixing peace in location proximity switch (611)
It is loaded on positioning sliding block (61).
The plate bending method of a kind of intelligent numerical control bender the most according to claim 8, it is characterised in that: described send
Material device (9) includes that feeding X-axis controls device (91), feeding Z axis controls device (92) and rotating mechanism (93), feeding X-axis control
Device processed (91) includes feeding X-axis leading screw (911), feeding X-axis slide block (912), feeding X-axis servomotor (913), feeding X-axis
Servomotor (913) drives feeding X-axis leading screw (911) to rotate, and feeding X-axis slide block (912) is axial along feeding X-axis leading screw (911)
Mobile；Feeding Z axis controls device (92) and is fixedly installed in feeding X-axis slide block (912), and feeding Z axis controls device (92) and send
It is perpendicular that material X-axis controls device (91) in the vertical direction, and feeding Z axis controls device (92) and includes feeding Z axis servomotor
(921), feeding Z axis slide block (922), feeding Z axis leading screw (923), feeding Z axis servomotor (921) drive feeding Z axis leading screw
(923) rotating, feeding Z axis slide block (922) moves axially along feeding Z axis leading screw (923)；Described rotating mechanism (93) includes electromagnetism
Ferrum (931), electric magnet connecting rod (932) and electric magnet servomotor (933), electric magnet connecting rod (932) one end and electric magnet (931)
Fixing connection, the other end is connected with electric magnet servomotor (933), and electric magnet servomotor (933) is fixedly installed in feeding Z axis
On slide block (922).
The plate bending method of a kind of intelligent numerical control bender the most according to claim 9, it is characterised in that: described
Frame (1) includes frame rotary shaft (11), top sword (12), upper mold hydraulic cylinder (13), and frame (1) passes through frame rotary shaft (11)
Being connected with base (8), described top sword (12) is installed on frame (1) work pieces process end bottom, upper mold hydraulic cylinder by nut
(13) two ends are connected with frame (1), base (8) the most respectively；Described apparatus for bending (7) includes c-type knife rest (71), Z axis liquid
Cylinder pressure (72), secondary rotary shaft (73), main rotating shaft (74), X-axis hydraulic cylinder rotary shaft (75), X-axis hydraulic cylinder (76), c-type knife rest
(71) be connected with main rotating shaft (74) by secondary rotary shaft (73), described Z axis hydraulic cylinder (72) two ends respectively with c-type knife rest
(71), base (8) be connected, X-axis hydraulic cylinder (76) one end is by X-axis hydraulic cylinder rotary shaft (75) and main rotating shaft (74) even
Connecing, the other end is connected with base (8).
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| CN201610511268.0A CN106077168B (en) | 2016-06-30 | 2016-06-30 | A kind of plate bending method of intelligent numerical control bender |
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| CN108326169A (en) * | 2018-01-10 | 2018-07-27 | 邓瑜 | A kind of bilateral quadrangle Synchronous Bending machine of luggage embryo material |
| CN109127796A (en) * | 2018-08-30 | 2019-01-04 | 安徽擎天伟嘉装备制造有限公司 | A kind of the numerical control molding machine and its forming method of outcase of refrigerator maze trough |
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| CN109127796A (en) * | 2018-08-30 | 2019-01-04 | 安徽擎天伟嘉装备制造有限公司 | A kind of the numerical control molding machine and its forming method of outcase of refrigerator maze trough |
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| CN110131225A (en) * | 2019-04-02 | 2019-08-16 | 太原重工股份有限公司 | A kind of hydraulic control circuit and method of bender lower die locking cylinder |
| CN110102698A (en) * | 2019-06-04 | 2019-08-09 | 莱州市锐泰机械配件有限公司 | A kind of forging line |
| CN110465567A (en) * | 2019-09-12 | 2019-11-19 | 河南安明门窗有限公司 | Multi-function folding bending apparatus |
| CN111069361A (en) * | 2019-12-14 | 2020-04-28 | 沈阳工业大学 | Variable-angle numerical control precise thin plate bending and shearing device |
| CN111069361B (en) * | 2019-12-14 | 2022-03-01 | 沈阳工业大学 | Variable-angle numerical control precise thin plate bending and shearing device |
| CN111558661A (en) * | 2020-04-26 | 2020-08-21 | 安徽博美机床股份有限公司 | Numerical control three-cylinder bending machine |
| CN111558661B (en) * | 2020-04-26 | 2021-07-13 | 安徽博美机床股份有限公司 | Numerical control three-cylinder bending machine |
| CN111515274A (en) * | 2020-05-15 | 2020-08-11 | 南京工业大学 | Flexible bending method and processing device for metal plate |
| CN111618196A (en) * | 2020-05-19 | 2020-09-04 | 杭州富阳海翔机械有限公司 | Feeding device applied to plate bending machine |
| CN111804771A (en) * | 2020-07-21 | 2020-10-23 | 亚铁智能装备技术(东莞)有限公司 | Bending method based on asymmetric workpiece of bending machine |
| CN111804771B (en) * | 2020-07-21 | 2022-08-12 | 亚铁智能装备技术(东莞)有限公司 | Bending method based on asymmetric workpiece of bending machine |
| CN113385557A (en) * | 2021-06-11 | 2021-09-14 | 江苏铭瀚智能科技有限公司 | Sheet metal part multi-point bending device |
| CN113877996A (en) * | 2021-09-08 | 2022-01-04 | 江苏金锠盛机床有限公司 | Numerical control bender transmission system and numerical control bender |
| CN113877996B (en) * | 2021-09-08 | 2024-04-19 | 江苏金锠盛机床有限公司 | Transmission system of numerical control bending machine and numerical control bending machine |
| CN114192621A (en) * | 2021-12-07 | 2022-03-18 | 安徽中意机床制造有限公司 | Bending feeding device and bending center |
| CN117046946A (en) * | 2023-09-13 | 2023-11-14 | 保定市天乾电气科技有限公司 | Bending equipment for electric iron accessory and iron accessory thereof |
| CN117046946B (en) * | 2023-09-13 | 2024-03-19 | 保定市天乾电气科技有限公司 | Bending equipment for electric iron accessory and iron accessory thereof |
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