CN106694746A - Plate punching method - Google Patents
Plate punching method Download PDFInfo
- Publication number
- CN106694746A CN106694746A CN201611252714.7A CN201611252714A CN106694746A CN 106694746 A CN106694746 A CN 106694746A CN 201611252714 A CN201611252714 A CN 201611252714A CN 106694746 A CN106694746 A CN 106694746A
- Authority
- CN
- China
- Prior art keywords
- gear
- light source
- staking punch
- piston
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- 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
- B21D55/00—Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass
-
- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
- B30B1/38—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure wherein the plungers are operated by pressure of a gas, e.g. steam, air
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1815—Rotary generators structurally associated with reciprocating piston engines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention discloses a plate punching method. A punching device is adopted in the method; the punching device includes a base and a mounting base; a punching die is arranged in the mounting base; a bracket is arranged on one side of the base, and is connected with a mounting frame; a cylinder is arranged at the lower part of the mounting frame, and is connected with a punching head; an intake port of the cylinder is connected with an intake pipe; the intake pipe is slidingly connected with a valve element; a mounting hole is formed in the mounting frame; the valve element extends into the mounting hole; an electromagnet is arranged in the mounting hole, and is provided with a magnet exciting coil; multiple air collecting tanks are formed in the punching head; a piston is arranged in a piston cavity; the tail part of the piston extends out of the punching head, and is connected with a first rack; a rotating shaft is connected with a generator; photoelectric switches are arranged on the base; and the punching device further includes two accumulators and a light source. The plate punching method prevents potential safety hazards of workers caused by the cylinder driving the punching head to downwards move due to misoperation of the workers when hands of workers do not leave a punching area yet.
Description
Technical field
The present invention relates to a kind of method for processing sheet material.
Background technology
Punch forming refers to that depended on pressure machine and mould apply external force to sheet material, band, tubing and section bar etc., is allowed to produce modeling
Property deformation or separate, so as to obtain the workpiece of required shape and size（Stamping parts）Processing molding method.In the prior art, plate
Material is processed by punch forming.
A kind of Quick Release plate stamping device, including bottom are such as disclosed in China Patent No. ZL201521065076.9
Seat, the side of base is provided with fixed plate, and compression cylinder, the piston end connection of compression cylinder are provided with by arc in fixed plate
There is pressing plate, pressing plate is provided with pressed sheet through the guide plate being arranged in fixed plate, pressing plate lower end, the base below pressed sheet
The mounting groove for installing stamping mold is provided with, stamping mold is fixed in mounting groove by fixed fixture block, and base bottom is additionally provided with
Die orifice is moved back, the decompressor when in use, stamping mold is fixed in mounting groove, then promote pressed sheet to enter by compression cylinder
Row punching press, stamping forming speed is fast, and the quality of product is high.When in use, typically blowing person will with hand for this decompressor
Sheet material is put to punching press position, and punching press person observes after the completion of placing that open switch, staking punch pressing sheet material is so worked continuously,
Just can guarantee that high production.But in real work, when the hand of blowing person not yet exits the punching press scope of drift, punching press person is now
If maloperation by switch open, staking punch will punching press to the hand of blowing operator, cause personal injury, safety coefficient is low.
The content of the invention
It is high the invention is intended to provide a kind of secure ram, can be prevented effectively from and the plate stamping method of personal injury occur.
Plate stamping method in this programme, the method uses a kind of decompressor, including base, and base top is provided with peace
Dress seat, is provided with stamping mold in mounting seat, base side is provided with vertical support, and horizontal mounting bracket is connected with support, peace
The bottom shelved is provided with cylinder, and staking punch is connected with the piston rod of cylinder, and air inlet pipe is connected with the air inlet of cylinder, enters
The valve element that can open and close air inlet pipe, the valve element that valve element is made for ferrous material, on mounting bracket are slidably connected on tracheae
Mounting hole is offered, valve element is stretched into mounting hole, electromagnetic block is additionally provided with mounting hole, magnet exciting coil is arranged with electromagnetic block,
Spring is also associated between valve element and electromagnetic block, some pneumatic troughs are provided near the side of stamping mold in staking punch, each collection
Air drain is connected by piston chamber, and piston is provided with piston chamber, and piston includes piston crown and piston tail, and piston tail is stretched
Go out staking punch and be connected with the first tooth bar, first gear is engaged with the first tooth bar, second gear is engaged with first gear, the
The gear ratio of one gear and second gear is more than 5:1, second gear is provided with rotating shaft, and generator is connected with rotating shaft, also includes
Two batteries and the light source being slidably connected on staking punch, light source are coaxially disposed with mounting seat, and mounting seat is under light source irradiation
Safe shadow area will be formed on base, the safe shadow area of base be externally provided with it is some under light source irradiation in closure state
Optoelectronic switch, each optoelectronic switch connects with magnet exciting coil again after being connected in series, and generator is connected with one of storage battery,
Magnet exciting coil is connected with another battery again after being connected in parallel with light source；
The method is comprised the following steps：
（1）, when punching press is carried out to sheet material, open staking punch on light source, under the irradiation of light source, mounting seat will project to bottom
Safe shadow area is formed on seat, when be placed on sheet material in stamping mold by blowing person, in placement process, light source is radiated at staff
On, staff will form staff shadow region on base, and staff shadow region is located at outside safe shadow area, outside safe shadow area
Optoelectronic switch is partially in staff shadow region, and the optoelectronic switch in staff shadow region is due to that can not receive the letter of light source
Number and be in open mode, the loop that now each optoelectronic switch is formed with magnet exciting coil will be off, magnet exciting coil break
Electricity, under the action of the spring, valve element is moved down and causes that air inlet pipe is closed, and now will be unable to be ventilated in cylinder, i.e. cylinder
Staking punch can not be taken to move down carries out punching press to sheet material；
（2）, when blowing person by sheet material place finish and hand left into punching press scope when, the optoelectronic switch outside safe shadow area
The irradiation of light source can be received and closure state is in, i.e., the loop Jiang Chu that now each optoelectronic switch is formed with magnet exciting coil
In channel status, magnet exciting coil is powered, and electromagnetic block produces electromagnetic force and attracts valve element so that air inlet pipe opening, leads to in cylinder
Gas, cylinder starts and drives staking punch to move down carries out punching press to sheet material.
（3）, cylinder drive during staking punch pushes, substantial amounts of heat can be produced on staking punch, produced on staking punch
Heat cause that the air heats in pneumatic trough expand, the hot-air after expansion is entered into plunger shaft, is entered into plunger shaft
Hot-air will further promote piston crown and piston tail move up, the first tooth will be driven when piston tail is moved up
Bar is moved up, and then causes that the first gear engaged with the first tooth bar is rotated, and first gear is rotated and drives second gear to turn again
Dynamic, second gear drives axis of rotation, axis of rotation to drive generator to rotate again, and generator converts mechanical energy while rotation
It is electric energy, the battery charging again pair with generating mechatronics of the electric energy of generator conversion.
The effect of this programme is：1st, this programme utilizes the projection theory of light, when staff not yet leaves punching press scope,
Under the irradiation of light source, staff will form new shade outside safe shadow area, be now placed in the optoelectronic switch outside safe shadow area
Part is located in the shadow region and is off, and then cause that magnet exciting coil loop is in open-circuit condition, electromagnetic block loses
Magnetic is gone, valve element under the action of the spring closes air inlet pipe, now cylinder will be unable to ventilation, cylinder also cannot just drive punching press
Head is pushed, therefore decompressor in this programme is when in use, and when the hand of workman not yet leaves punching press scope, staking punch is by nothing
Method is pushed, and effectively raises the security of punching press, it is to avoid personal injury occur.
2nd, the decompressor in this programme in actual use, when needing temporary transient stopping punching press due to certain situation
Head when pushing, it is only necessary to form new shaded region outside the safe shadow area on base, now magnet exciting coil loop open circuit,
Cylinder cannot ventilate, and staking punch is stopped, therefore this programme easily can be controlled to staking punch, simple to operate.
3rd, the heat produced when this programme is worked using staking punch is so that the air in pneumatic trough heats expansion, recycling heat
Air effect promotes piston to move on piston, piston movement and then causes the movement of the first tooth bar, then by first gear and the
Two gears finally drive generator to rotate, and the mechanical energy of rotation is converted into electric energy by generator again, and pair with generating mechatronics
Battery charge, therefore this programme on the one hand realize on staking punch produce heat utilization, while it also avoid punching
Heat distributes the flimsy problem of caused staking punch not in time on pressure head.
4th, this programme sets two batteries, when actually used, one of battery and generator is attached,
Generator charges to battery, and another battery is used for the loop power supply where magnet exciting coil and light source, when being excitation wire
After the accumulator electric-quantity of loop power supply is finished where circle and light source, the battery and generator are attached, and will be original
The battery being connected with generator be connected to magnet exciting coil and light source where loop in, therefore this programme when in use need not
Charged a battery using extra equipment.
5th, in this programme first gear and second gear gear ratio set more than 5:1, therefore first gear and second
The rotating ratio of gear will be less than 1:The rotating speed of 5, i.e. second gear will be far longer than the rotating speed of first gear, now second gear energy
Drive generator to rotate with rotating speed higher, improve charge efficiency of the generator to battery.
6th, it is magnet exciting coil and light source is in parallel so that the work of magnet exciting coil and light source will not influence each other, improve punching press
The reliability of device work.
Further, support is slidably connected with mounting bracket.By position of the frame on support that be slidably installed, can be easily to not
The sheet material of stack pile carries out punch process.
Further, pneumatic trough is three, and three pneumatic troughs are axially distributed on staking punch.If the quantity mistake of pneumatic trough
It is many, then can make the whole intensity decreases of staking punch, service life shortens, if the quantity of pneumatic trough is very few, then staking punch is produced
Heat can not timely and effectively distribute so that the whole temperature of staking punch is higher all the time, three pneumatic troughs can be preferable
The heat for distributing staking punch generation, will not produce excessive influence to the intensity of staking punch again.
Further, the gear ratio of first gear and second gear is 10:1.The gear ratio of first gear and second gear is
10:When 1, the rotating ratio of first gear and second gear is 1:10, if the rotating ratio is excessive, then the generating efficiency of generator drops
Low, if rotating ratio is too small, then the rotating speed of second gear is too high, service life reduction.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment of the present invention plate stamping device；
Fig. 2 is the top view of base when staff leaves punching press scope；
Fig. 3 is the top view of staff base in punching press scope；
Fig. 4 is the enlarged drawing at A in Fig. 1；
Fig. 5 is the side view of second gear, rotating shaft and generator.
Specific embodiment
Below by specific embodiment, the present invention is further detailed explanation：
Reference in Figure of description includes：Base 1, mounting seat 11, support 12, optoelectronic switch 13, safe shadow area 14,
Staff shadow region 15, mounting bracket 2, the first battery 21, the second battery 22, cylinder 23, air inlet pipe 24, valve element 25, electromagnetic block
26th, staking punch 3, pneumatic trough 31, the first tooth bar 32, first gear 33, second gear 34, light source 35, generator 36, sheet material 4.
The decompressor used in this programme plate stamping method is basic as shown in accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3：The bottom of including
Seat 1, mounting seat 11 is provided with the top of base 1, and mounting groove is offered in mounting seat 11, and stamping mold is placed with mounting groove,
Some optoelectronic switches 13 are also distributed with the top of base 1, light optoelectronic switch 13 totally 4,4 optoelectronic switches 13 are connected in series
And be evenly distributed on circumference, the center superposition of the center of circle and the stamping mold of the circumference of the distribution of optoelectronic switch 13.
Vertical support 12 is provided with the right side of base 1, the mounting bracket 2 of horizontally set is connected with the upper end of support 12,
Mounting bracket 2 and support 12 are slidably connected, and when the sheet material 4 to different-thickness carries out punching press, can easily adjust mounting bracket 2 in branch
Position on frame 12, the first battery 21, the second battery 22 and cylinder are from left to right sequentially installed with the bottom of mounting bracket 2
23。
As shown in figure 4, being connected with air inlet pipe 24 on the right side of cylinder 23, air inlet pipe 24 is connected with inlet duct, in air inlet
Valve element 25 is also slidably connected on pipe 24, vertical mounting hole is offered on mounting bracket 2, the upper end of valve element 25 extend into installation
In hole, electromagnetic block 26 is additionally provided with mounting hole, magnet exciting coil is arranged with electromagnetic block 26, set between electromagnetic block 26 and valve element 25
There are spring, magnet exciting coil to be connected with the second battery 22 again after being connected with the circuit in series where optoelectronic switch 13.
Staking punch 3 is provided with the downside of cylinder 23, the piston of cylinder 23 is connected with staking punch 3, is opened respectively on staking punch 3
Be provided with piston chamber and some pneumatic troughs 31, pneumatic trough 31 has 3 in the present embodiment, 3 pneumatic troughs 31 from left to right according to
Secondary to be distributed on staking punch 3, the upper end of 3 pneumatic troughs 31 is connected with piston chamber, and piston, piston bag are provided with piston chamber
Include piston crown under and in upper piston tail, the wherein axial width of piston tail is axially wide more than piston crown
Degree, the upper end of piston tail stretches out staking punch 3 and is connected with the first tooth bar 32, and the left side of the first tooth bar 32 is engaged with first gear
33, the left side of first gear 33 is engaged with second gear 34, and the gear ratio of first gear 33 and second gear 34 is more than 5:1.
As shown in figure 5, being provided with rotating shaft in second gear 34, generator 36, generator 36 and first are connected with rotating shaft
Battery 21 is electrically connected, and when second gear 34 drives generator 36 to rotate by rotating shaft, be converted into for mechanical energy by generator 36
Electric energy, and the first battery 21 is charged.
Light source 35 is also slidably connected on staking punch 3, light source 35 is coaxially disposed with mounting seat 11, the right-hand member of light source 35 leads to
Connecting rod is crossed to be slidably connected on support 12.
The plate stamping method of this programme, comprises the following steps：
（1）, when punching press is carried out to sheet material, open punching press 3 on light source 35, under the irradiation of light source 35, mounting seat 11 will
Project to and safe shadow area 14 is formed on base, when be placed on sheet material in stamping mold by blowing person, in placement process, light source
35 are radiated on staff, and staff will form staff shadow region 15 on base, and staff shadow region 15 is located at outside safe shadow area 14,
Optoelectronic switch 13 outside safe shadow area 14 is partially in staff shadow region 15, the photoelectricity in staff shadow region 15
Switch 13 is in open mode due to that can not receive the signal of light source 35, and now each optoelectronic switch 13 is formed with magnet exciting coil
Loop will be off, magnet exciting coil power-off, under the action of the spring, valve element 25 move down and cause air inlet pipe 24
Close, now will be unable to be ventilated in cylinder 23, i.e., cylinder 23 can not take staking punch 3 to and move down and carry out punching press to sheet material；
（2）, when blowing person by sheet material place finish and hand left into punching press scope when, the light outside safe shadow area 14 is established by cable
Closing 13 can receive the irradiation of light source 35 and be in closure state, i.e. now each optoelectronic switch 13 and magnet exciting coil formation
Loop will be in channel status, and magnet exciting coil is powered, and electromagnetic block produces electromagnetic force and attracts valve element 25 so that air inlet pipe 24 is opened,
Ventilated in cylinder 23, cylinder 23 starts and drives staking punch 3 to move down carries out punching press to sheet material；
（3）, start cylinder 23, the piston rod of cylinder 23 stretched out and drives staking punch 3 to push, and staking punch 3 is produced during pushing
Substantial amounts of heat, the heat produced on staking punch 3 causes that the air heats in pneumatic trough 31 expand, and the hot-air after expansion enters
To in plunger shaft, the hot-air entered into plunger shaft will further promote piston crown and piston tail to move up, piston
The first tooth bar 32 will be driven to move up when afterbody is moved up, and then cause 33 turns of the first gear engaged with the first tooth bar 32
It is dynamic, because the gear ratio of first gear 33 and second gear 34 is more than 5:1, thus first gear 33 and second gear 34 rotating speed
Than less than 1:5, second gear 34 will drive axis of rotation, axis of rotation to drive generating again with the rotating speed of more than 5 times of first gear
Machine 36 is rotated, and mechanical energy is converted into electric energy while generator 36 is rotated, and the electric energy of the conversion of generator 36 is again pair and generator
First battery 21 of 36 electrical connections charges.
Above-described is only embodiments of the invention, and the general knowledge such as known concrete structure and characteristic is not made herein in scheme
Excessive description.It should be pointed out that for a person skilled in the art, on the premise of structure of the present invention is not departed from, can be with
Some deformations and improvement are made, these should also be considered as protection scope of the present invention, these are implemented all without the influence present invention
Effect and practical applicability.This application claims protection domain should be defined by the content of its claim, in specification
Specific embodiment etc. records the content that can be used for explaining claim.
Claims (4)
1. a kind of plate stamping method, it is characterised in that：The method uses a kind of decompressor, including base, and base top sets
There is mounting seat, stamping mold is provided with mounting seat, base side is provided with vertical support, and horizontal installation is connected with support
Frame, the bottom of mounting bracket is provided with cylinder, and staking punch is connected with the piston rod of cylinder, and air inlet is connected with the air inlet of cylinder
Pipe, slidably connects the valve element that can open and close air inlet pipe in air inlet pipe, the valve element that valve element is made for ferrous material is installed
Mounting hole is offered on frame, valve element is stretched into mounting hole, electromagnetic block is additionally provided with mounting hole, excitation wire is arranged with electromagnetic block
Circle, is also associated with spring between valve element and electromagnetic block, be provided with some pneumatic troughs near the side of stamping mold in staking punch, respectively
Pneumatic trough is connected by piston chamber, and piston is provided with piston chamber, and piston includes piston crown and piston tail, piston tail
Stretch out staking punch and be connected with the first tooth bar, first gear is engaged with the first tooth bar, second gear is engaged with first gear,
The gear ratio of first gear and second gear is more than 5:1, second gear is provided with rotating shaft, and generator is connected with rotating shaft, also wraps
Two batteries and the light source being slidably connected on staking punch are included, light source is coaxially disposed with mounting seat, mounting seat is irradiated in light source
Under safe shadow area will be formed on base, the safe shadow area of base be externally provided with it is some under light source irradiation in closed form
The optoelectronic switch of state, each optoelectronic switch is connected with magnet exciting coil again after being connected in series, and generator is electrically connected with one of battery
Connect, magnet exciting coil is connected with another battery again after being connected in parallel with light source；
The method is comprised the following steps：
（1）, when punching press is carried out to sheet material, open staking punch on light source, under the irradiation of light source, mounting seat will project to bottom
Safe shadow area is formed on seat, when be placed on sheet material in stamping mold by blowing person, in placement process, light source is radiated at staff
On, staff will form staff shadow region on base, and staff shadow region is located at outside safe shadow area, outside safe shadow area
Optoelectronic switch is partially in staff shadow region, and the optoelectronic switch in staff shadow region is due to that can not receive the letter of light source
Number and be in open mode, the loop that now each optoelectronic switch is formed with magnet exciting coil will be off, magnet exciting coil break
Electricity, under the action of the spring, valve element is moved down and causes that air inlet pipe is closed, and now will be unable to be ventilated in cylinder, i.e. cylinder
Staking punch can not be taken to move down carries out punching press to sheet material；
（2）, when blowing person by sheet material place finish and hand left into punching press scope when, the optoelectronic switch outside safe shadow area
The irradiation of light source can be received and closure state is in, i.e., the loop Jiang Chu that now each optoelectronic switch is formed with magnet exciting coil
In channel status, magnet exciting coil is powered, and electromagnetic block produces electromagnetic force and attracts valve element so that air inlet pipe opening, leads to in cylinder
Gas, cylinder starts and drives staking punch to move down carries out punching press to sheet material；
（3）, cylinder drive during staking punch pushes, substantial amounts of heat can be produced on staking punch, the heat produced on staking punch
Amount causes the air heats expansion in pneumatic trough, and the hot-air after expansion is entered into plunger shaft, the heat entered into plunger shaft
Air will further promote piston crown and piston tail move up, will be driven when piston tail is moved up the first tooth bar to
Upper movement, and then cause that the first gear engaged with the first tooth bar is rotated, first gear is rotated and drives second gear to rotate again, the
Two gear driven axis of rotation, axis of rotation drives generator to rotate again, and mechanical energy is converted into electricity by generator while rotation
Can, the electric energy of generator conversion again pair with the battery charging of generating mechatronics.
2. plate stamping method according to claim 1, it is characterised in that：Support is slidably connected with mounting bracket.
3. plate stamping method according to claim 2, it is characterised in that：Pneumatic trough is three, three pneumatic trough axial directions
It is distributed on staking punch.
4. plate stamping method according to claim 1 and 2, it is characterised in that：The number of teeth of first gear and second gear
Than being 10:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611252714.7A CN106694746B (en) | 2016-12-30 | 2016-12-30 | Plate stamping method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611252714.7A CN106694746B (en) | 2016-12-30 | 2016-12-30 | Plate stamping method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106694746A true CN106694746A (en) | 2017-05-24 |
| CN106694746B CN106694746B (en) | 2018-06-29 |
Family
ID=58906159
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611252714.7A Active CN106694746B (en) | 2016-12-30 | 2016-12-30 | Plate stamping method |
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| Country | Link |
|---|---|
| CN (1) | CN106694746B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111906212A (en) * | 2020-09-15 | 2020-11-10 | 陆立军 | Portable hydraulic type steel bar bender |
| CN114142652A (en) * | 2021-11-15 | 2022-03-04 | 杭州爱纬斯电子有限公司 | Energy-saving direct current motor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020013720A2 (en) * | 2018-07-09 | 2020-01-16 | Al Naimi Hassan | Pneumatic powered electric generator |
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| CN111906212A (en) * | 2020-09-15 | 2020-11-10 | 陆立军 | Portable hydraulic type steel bar bender |
| CN114142652A (en) * | 2021-11-15 | 2022-03-04 | 杭州爱纬斯电子有限公司 | Energy-saving direct current motor |
| CN114142652B (en) * | 2021-11-15 | 2023-02-28 | 杭州爱纬斯电子有限公司 | Energy-saving direct current motor |
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| CN106694746B (en) | 2018-06-29 |
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