CN109433904A - A kind of processing method of channel steel fluting bending sub-assembly - Google Patents
A kind of processing method of channel steel fluting bending sub-assembly Download PDFInfo
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- CN109433904A CN109433904A CN201811257585.XA CN201811257585A CN109433904A CN 109433904 A CN109433904 A CN 109433904A CN 201811257585 A CN201811257585 A CN 201811257585A CN 109433904 A CN109433904 A CN 109433904A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 201
- 239000010959 steel Substances 0.000 title claims abstract description 201
- 238000005452 bending Methods 0.000 title claims abstract description 167
- 238000003672 processing method Methods 0.000 title claims abstract description 23
- 238000003754 machining Methods 0.000 claims abstract description 14
- 238000005520 cutting process Methods 0.000 claims description 59
- 238000000034 method Methods 0.000 claims description 35
- 230000008569 process Effects 0.000 claims description 29
- 238000005516 engineering process Methods 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000010008 shearing Methods 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/14—Dies
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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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
The invention discloses a kind of processing methods of channel steel fluting bending sub-assembly, belong to shearing and Bending Processing technical field.A kind of channel steel fluting bending sub-assembly processing method of the invention, rectangular cut processing mold, triangle grooving processing mold and Bending Processing mold are respectively arranged on lathe, a rectangular slot is processed in the side of channel steel to be processed first with rectangular cut processing mold, then a triangle is processed in channel steel bottom surface using triangle grooving processing mold to slot, bending machining is carried out to channel steel followed by Bending Processing mold, finally the seam of bool weld up to sub-assembly.It is slotted by using processing unit (plant) of the invention to channel steel, bending machining, processing efficiency and processing quality can be significantly improved, and the precision of gained sub-assembly and quality is made to meet requirement.
Description
Present patent application is for application No. is 2016111456746 divisional application, the applyings date of original application
Are as follows: on December 13rd, 2016, invention and created name are as follows: a kind of channel steel fluting bending sub-assembly processing unit (plant) and processing method.
Technical field
The invention belongs to shear and bending processing technology field, slot bending combination more specifically to a kind of channel steel
The processing method of part.
Background technique
Channel steel is the strip steel that section is in groove type, and channel steel category construction is used and mechanical structural carbon steel, is complicated break
The fashioned iron steel in face, section configuration are groove type, are mainly used for building structure, curtain wall engineering, mechanical equipment and vehicle manufacture
Deng.Channel steel is widely used, needs first to process fluting as shown in Figure 1a on channel steel under some special occasions in actual production,
It is bent channel steel along fluting center line, finally the gap after bending between fluting is welded and is obtained such as Fig. 1 b
Shown in sub-assembly.
It is in the prior art usually the form using lancing to slotting on channel steel in Fig. 1 since structure is complicated for channel steel
Each side is cut respectively, also needs to overturn channel steel and adjust its position in cutting process, operates cumbersome, processing effect
Rate is low.Simultaneously as above-mentioned processing is more demanding to the cut quality slotted on channel steel, hair is also easy to produce in the form of lancing
Side, and notch out-of-flatness, it is difficult to meet cut quality requirement.Although being cut energy to above-mentioned fluting using laser and plasma
Cut quality is significantly improved, prevents flash from generating, but it is expensive, it is difficult to be promoted and applied, and its cutting efficiency is still lower, no
It is able to satisfy requirement.In addition, being cut using the form of existing lancing or laser, plasma cut to the fluting on above-mentioned channel steel
When cutting, it is difficult to guarantee that the position of fluting and dimensional accuracy, the quality so as to cause final gained sub-assembly are affected with performance.
Therefore, the processing efficiency and processing quality for how improving above-mentioned channel steel fluting bending sub-assembly are that the present invention needs to solve
Main problem certainly.It is existing related open about the patent report for improving processing efficiency by using mold cutting through retrieving.
Such as, Chinese Patent Application No. 201521070646.3, the applying date are on December 14th, 2015, and invention and created name is multi-functional
Channel steel disconnecting device, this application include upper mold and lower mold, and the upper mold is located above lower mold, and upper mold includes peace
Dress portion and upper mold knife；Upper mold knife bottom is in 120 ° of fillets；The lower mold includes chassis and the support that is installed on chassis
Mechanism, and it is set to the lower die cutter on chassis discharge port both sides；Cutting is offered along chassis length direction between the supporting mechanism
Slot；The supporting mechanism is formed by fixing device and tunable arrangement；The fixed device is fixed on chassis；The tunable arrangement
It is movably installed on chassis.This application by using mold process replace original cast-cutting saw hand cut mode so as to
Cut quality and efficiency are significantly improved, but since it only needs to carry out channel steel cutting off processing, operation and technique are required simply, easily
In realization.
Summary of the invention
1. technical problems to be solved by the inivention
It is an object of the invention to overcome the form for generalling use lancing in the prior art to the fluting progress on channel steel
Then cutting carries out bending machining, lower so as to cause cutting efficiency, cut quality is poor, and the position of fluting, dimensional accuracy are difficult to
It meets the requirements, so that the deficiency of the quality of the final gained sub-assembly of influence, provides a kind of adding for channel steel fluting bending sub-assembly
Work method.Slotted by using processing unit (plant) of the invention to channel steel, bending machining, can significantly improve processing efficiency with
Processing quality, and the precision of gained sub-assembly and quality is made to meet requirement.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention are as follows:
A kind of channel steel fluting bending sub-assembly processing method of the invention, by rectangular cut processing mold, triangle grooving
Processing mold and Bending Processing mold are respectively arranged on lathe, first with rectangular cut processing mold in channel steel to be processed
Side processes a rectangular slot, then processes a triangle in channel steel bottom surface using triangle grooving processing mold and slots, then
Bending machining is carried out to channel steel using Bending Processing mold, finally the seam of bool weld up to sub-assembly, in which:
The specific processing technology of channel steel side rectangular cut are as follows: channel steel to be processed is placed in above the first quiet tool apron,
The first moving knife of groove face side, and guarantee that the first moving knife side and the recess sidewall of channel steel to be processed fit；By hydraulic
Machine hydraulic system driving hydraulic cylinder pushes the first cope plate to move down, and then the first moving knife is driven to move down to channel steel side
Rectangular cut processed；
The specific processing technology of channel steel base triangle grooving are as follows: channel steel to be processed is placed in above the second quiet tool apron,
So that channel steel bottom surface is waited for that slotting position is corresponding with the position of the second quiet knife, pushes the by hydraulic system of hydraulic machine driving hydraulic cylinder
Two cope plates move down, and then drive the second moving knife to move down and process to the triangle grooving of channel steel bottom surface, process
There are the flat segments that width is 4-5mm for the sharp corner of triangle grooving out；
Bending deformation: channel steel is placed on bending female die, drives bending punch-pin to move down by hydraulic system of hydraulic machine,
Channel steel is set to carry out bending along the center line of triangle grooving, until the two sides of gained bending part intermediate cam shape grooving are mutually flat
Row.
Welding: the gap between gained bending part intermediate cam shape grooving two sides is welded to get required sub-assembly.
Further, the rectangular cut processing mold includes the first moving knife and the first quiet knife, wherein the first moving knife
It is fixedly linked with the first moving knife seat, the first moving knife cutting edge fac is V-arrangement face of the middle part to lower recess；First quiet knife is installed on first
Quiet tool apron is simultaneously formedShape structure；
The triangle grooving processing mold includes the second quiet knife and the second moving knife, wherein the second moving knife and second moves
Tool apron is fixedly linked, and the second moving knife cutting edge fac is from its sharp corner to the inclined plane in the other side；Second quiet knife is installed on
Two quiet tool aprons simultaneously form L shape structure；
The Bending Processing mold includes bending punch-pin and bending female die, the downwardly convex formation L in the bottom of bending punch-pin
Shape bending part is machined with the L shape cavity plate slot matched with the bending part of bending punch-pin at the top of the bending female die.
Further, the middle part of the first moving knife cutting edge fac to the height d of lower recess be channel steel thickness to be cut
0.5-0.8, the sharp corner of the second moving knife cutting edge fac corresponding thereto side difference in height be channel steel thickness to be cut 0.5-
0.8。
Further, the first quiet tool apron is processed asShape structure, the first quiet knife are installed on the first quiet tool apron
Inner sidewall；The quiet tool apron of described second is processed as L shape structure, and the second quiet knife is installed on the inner sidewall of the second quiet tool apron, and
The junction of first quiet tool apron adjacent inside side wall is machined with the first locating slot, and two inner sidewall junctions of the second quiet tool apron are machined with
Second locating slot.
Further, between the cutting edge of the described first quiet knife cutting edge corresponding to the first moving knife and the second quiet edge with
There is horizontal clearance between the corresponding cutting edge of second moving knife, which is the 0.05-0.1 of channel steel thickness to be cut.
Further, the first quiet knife is made of seperated molding quiet knife I, quiet knife II and quiet knife III, and quiet knife
There is gap between I and quiet knife II and between quiet knife III and quiet knife II, which is 2-3mm；Described second
Quiet knife is made of seperated molding quiet knife IV and quiet knife V.
Further, the first quiet knife, the first moving knife, the second quiet knife and the second moving knife are all made of 9CrSi material,
Its hardness HRC=55-57；It is machined with bit-avoiding slot on the bending punch-pin, bit-avoiding slot face channel steel setting, the L shape cavity plate
The bottom of slot is machined with the yielding slot to lower recess.
Further, when being processed using rectangular cut processing mold to channel steel, the channel steel is placed in first
The top of quiet tool apron, and the groove inner sidewall of the side of the first moving knife and channel steel fits, and the first moving knife and channel steel groove side
The side that wall fits is connect by avoiding circular arc with the top surface transition of the first moving knife.
Further, three side walls of the described first quiet tool apron are machined with the first screw hole and the second screw hole, the
The side of one quiet knife is machined with the third screw hole communicated corresponding with the first screw hole, and the internal diameter of the first screw hole is greatly in the inner
The internal diameter of the diameter of screw, the diameter and third screw hole of the screw matches, by the first screw hole and the second screw hole
Screw adjust the gap between the first quiet knife and the first quiet tool apron inner sidewall and the first quiet knife positioned.
Further, the sharp corner of second moving knife is machined with flat segments, and the width of the flat segments is 2-3mm, and
Second moving knife is equipped with extended segment far from sharp corner, and the width of the extended segment is 3-5mm.
3. beneficial effect
Using technical solution provided by the invention, compared with prior art, there is following remarkable result:
(1) processing method of a kind of channel steel of the invention fluting bending sub-assembly, first with rectangular cut of the invention
Processing mold processes a rectangular slot in the side of channel steel to be processed, then using triangle grooving processing mold in channel steel bottom surface
Triangle fluting is processed, bending machining can be carried out to the channel steel after grooving using Bending Processing mold, so as to significant
The phenomenon that improving processing efficiency and processing quality, preventing flash and notch out-of-flatness.Pass through the cooperation of three molds simultaneously,
And the specific structure of each mold is optimized, so as to effectively prevent in shear history channel steel to bend change
Shape guarantees the required precision of Working position and size, thus helps to ensure that the quality of final gained sub-assembly.
(2) processing method of a kind of channel steel fluting bending sub-assembly of the invention, the in the rectangular cut processing mold
First moving knife cutting edge fac of one moving knife is V-arrangement face of the middle part to lower recess, the second moving knife in the triangle grooving processing mold
The second moving knife cutting edge fac be from its sharp corner to the inclined plane in the other side, so that the uniform of power on the one hand can be effectively ensured
Distribution reduces the torsion in cutting process, acts on it to integral device torsionless, is conducive to protect complete equipment and mold,
The bending deformation that channel steel in shear history occurs can be effectively reduced simultaneously, advantageously ensure that machining accuracy and subsequent technique plus
Working medium amount, and then it is advantageously ensured that the quality and precision of final gained channel steel sub-assembly meet requirement；On the other hand to slot
Steel stress can play a buffer role in, and noise pollution be shaken and reduce to be conducive to reduce shearing force and equipment, conducive to mold
The improvement of protection and employee working environment.
(3) processing method of a kind of channel steel of the invention fluting bending sub-assembly, the middle part of the first moving knife cutting edge fac
It is the 0.5-0.8 of channel steel thickness to be cut, the sharp corner of the second moving knife cutting edge fac side corresponding thereto to the height d of lower recess
Difference in height be channel steel thickness to be cut 0.5-0.8, the present invention passes through the sinking degree and second to the first moving knife cutting edge fac
The inclined degree of moving knife cutting edge fac optimizes, so as to ensure the minimum of torsion suffered by channel steel and equipment, utmostly
Ground reduces damage and environmental noise to mold and complete equipment, and can effectively prevent channel steel and occur bending and deformation.
(4) processing method of a kind of channel steel of the invention fluting bending sub-assembly, the cutting edge and the first moving knife of the first quiet knife
There is horizontal clearance between corresponding cutting edge and between the second quiet edge cutting edge corresponding to the second moving knife, which is
The 0.05-0.1 of channel steel thickness to be cut is conducive to protect so as to effectively prevent shear history to generate flash and sting knife phenomenon
Demonstrate,prove shearing quality.
(5) processing method of a kind of channel steel of the invention fluting bending sub-assembly, using rectangular cut processing mold to slot
When steel is processed, channel steel is placed directly in the top of the first quiet tool apron, and guarantee the first moving knife side and channel steel it is recessed
Slot inner sidewall fits, so as to be positioned using the torsion generated in shear history to channel steel, accurate positioning, and Neng Gouyou
Effect avoids above-mentioned twisting force from preventing channel steel from deforming the influence of channel steel, and then ensure that the quality and essence of following process
Degree.The top surface transition that the side that the first moving knife and channel steel recess sidewall fit in the present invention passes through evacuation circular arc and the first moving knife
Connection, to help to avoid channel steel inner wall fillet, convenient for upper slitter puts in, while helping to ensure that moving knife side and channel steel
The tight type of inner wall fitting.
(6) processing method of a kind of channel steel fluting bending sub-assembly of the invention, second in triangle grooving processing mold
The sharp corner of moving knife is machined with flat segments, and the width of the flat segments is 2-3mm, so that the on the one hand can be reduced in shear history
The stress that two moving knife sharp corners are subject to is concentrated, and helps to protect cutter, tool life；On the other hand by by channel steel
Flat segments are processed as at the tip of base triangle fluting, so as to prepare for lower road Bending Processing, is conducive to channel steel and is bent
Deformation, and can guarantee the goodness of fit of bending, and then advantageously ensure that the firm welding and aesthetics of bending seam, while can
Be effectively reduced in lower road bending process on the non-grooving side of channel steel with the stress of triangle grooving sharp corner corresponding region concentrate and
Torsional deformation.
Detailed description of the invention
Fig. 1 (a) is the structural schematic diagram after channel steel fluting to be processed in the present invention；
Fig. 1 (b) is the structural schematic diagram for the channel steel fluting bending sub-assembly processed in the present invention；
Fig. 2 is the mounting structure schematic diagram of rectangular cut processing mold of the invention；
Fig. 3 is the scheme of installation of quiet knife in rectangular cut processing mold of the invention；
Fig. 4 is the structural schematic diagram of moving knife in rectangular cut processing mold of the invention；
Fig. 5 is the cross-sectional view in moving knife direction A-A along Fig. 4 of rectangular cut processing mold；
Fig. 6 is the assembly structure diagram of triangle grooving processing mold of the invention；
Fig. 7 is the structural schematic diagram of moving knife in triangle grooving processing mold of the invention；
Fig. 8 is the schematic top plan view of moving knife in triangle grooving processing mold of the invention；
Fig. 9 is the schematic side view of moving knife in triangle grooving processing mold of the invention；
Figure 10 is the use state diagram of Bending Processing mold of the invention；
Figure 11 is the schematic side view of the bending punch-pin of Bending Processing mold of the invention；
Figure 12 is the schematic top plan view of the bending female die of Bending Processing mold of the invention.
Label declaration in schematic diagram:
1, upper junction plate；2, the first cope plate；3, the first moving knife seat；4, the first moving knife；401, circular arc is avoided；402, first
Moving knife cutting edge fac；5, channel steel；6, the first quiet tool apron；601, the first screw hole；602, the second screw hole；603, the first locating slot；
7, the first lower template；8, the first quiet knife；801, quiet knife I；802, quiet knife II；803, quiet knife III；804, third screw hole；9,
Two lower templates；10, the second quiet tool apron；1001, the second locating slot；11, the second quiet knife；1101, quiet knife IV；1102, quiet knife V；12,
Second moving knife；1201, the second moving knife cutting edge fac；1202, flat segments；1203, extended segment；13, bending punch-pin；1301, mounting portion；
1302, interconnecting piece；1303, bending part；1304, bit-avoiding slot；14, bending female die；1401, cavity plate slot；1402, slot is made a concession；1403,
Circular arc.
Specific embodiment
To further appreciate that the contents of the present invention, now in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
In conjunction with attached drawing, a kind of channel steel fluting bending sub-assembly processing unit (plant) of the present embodiment, including rectangular cut processing mould
Tool, triangle grooving processing mold and Bending Processing mold process a square in the side of channel steel 5 by rectangular cut processing mold
Shape grooving processes a triangle grooving in the bottom surface of channel steel 5 by triangle grooving processing mold, to realize as shown in Figure 1
The processing of grooving on channel steel significantly improves the processing efficiency and processing quality of channel steel sub-assembly, can be avoided generate flash and
The phenomenon that notch out-of-flatness, and guarantee that the quality of final gained sub-assembly is met the requirements；It will be after grooving by Bending Processing mold
Channel steel carry out Bending Processing.
As Figure 1-Figure 5, the rectangular cut processing mold of the present embodiment include the first moving knife 4 and the first quiet knife 8, first
Moving knife 4 is located at the top of the first quiet knife 8, and first moving knife 4 is fixedly linked with the first moving knife seat 3, and the bottom surface of the first moving knife 4 is
First moving knife cutting edge fac 402, the first quiet knife 8 are installed on the first quiet tool apron 6 and are formedShape structure passes through the first moving knife
4 and first the cooperation of quiet knife 8 can be realized the processing of channel steel side rectangular cut.Since shearing force is larger during actual shearing
And be unevenly distributed, so as to cause mold and integral device by biggish percussion and twisting force, to mold and equipment
Damage is serious, and then shortens the service life of equipment, and influence the processing quality and precision of subsequent workpiece.Meanwhile above-mentioned torsion
Power acts on the bending deformation that will also result in channel steel, to influence channel steel processing quality and precision, makes the matter of final gained sub-assembly
Amount is affected.Further, since shearing force is larger, biggish noise can be generated in shear history, to endanger the body and mind of employee
Health.The present embodiment is cut by the way that the first moving knife cutting edge fac 402 is processed as middle part to the V-arrangement face of lower recess along rectangle to be opened
The center line in slot groove width direction is to lower recess, so that being uniformly distributed for shearing force on the one hand can be effectively ensured, reduction is cut through
Torsion in journey makes mold and integral device hardly by twisting force, is conducive to protect complete equipment and mold, extends equipment
Service life, and the machining accuracy of subsequent workpiece is effectively ensured；Torsion in shear history can be effectively reduced simultaneously to make
With the influence to channel steel, the degree of deformation of channel steel in shear history is reduced, is conducive to the quality for improving final gained channel steel sub-assembly
With precision.On the other hand buffer function can also be played to channel steel and equipment stress by above-mentioned design, cut to be conducive to reduce
Shear force and equipment shake and reduce noise pollution, conducive to the protection of mold and the improvement of employee working environment.
As shown in Fig. 6-Fig. 9, the triangle grooving processing mold of the present embodiment includes the second quiet knife 11 and the second moving knife 12,
Wherein, the second moving knife 12 is fixedly linked with the second moving knife seat, and the second quiet knife 11 is installed on the second quiet tool apron 10 and forms L shape knot
Structure processes the triangle grooving of channel steel bottom surface by the cooperation of the second moving knife 12 and the second quiet knife 11.In the present embodiment
Second moving knife cutting edge fac 1201 is processed as from its sharp corner to the inclined plane in the other side, i.e., first to three in guarantee shear history
The sharp corner of angular grooving is sheared, so as to be substantially reduced in triangle grooving process integral device and channel steel by
The bending deformation arrived is conducive to protect mold and equipment, guarantees the quality of channel steel machining accuracy and final gained sub-assembly, and right
The shearing force that mold and channel steel are subject to is buffered, and vibration and the noise of equipment are reduced.
The Bending Processing mold of the present embodiment, which is used to be bent along the vertex of triangle grooving by the channel steel after cutting, to be added
Work, as shown in Figure 10-Figure 12, above-mentioned Bending Processing mold includes bending punch-pin 13 and bending female die 14, and bending punch-pin 13 includes
Bending punch-pin 13 is installed to by mounting portion 1301, interconnecting piece 1302 and the bending part 1303 set gradually by mounting portion 1301
On upper die of bending machine plate, the bending part 1303 is used to carry out bending to channel steel, is processed as L-shaped structure.The bending is recessed
The top of mould 14 is machined with the L shape cavity plate slot 1401 matched with the bending part 1303 of bending punch-pin 13.As shown in Figure 1, will open
Channel steel after slot is placed in 14 top of bending female die, drives bending punch-pin 13 to move downward by hydraulic system, to realize bending
Processing, shown in the structure of gained bending part such as Fig. 1 (b), formation one is straight between two sides of channel steel base triangle grooving
Gap, be convenient for subsequent welding, and can guarantee the aesthetics of weld seam.
Embodiment 2
A kind of channel steel fluting bending sub-assembly processing unit (plant) of the present embodiment, including rectangular cut processing mold, triangle
Grooving processing mold and Bending Processing mold, in which:
As Figure 2-Figure 5, rectangular cut processing mold includes the first moving knife 4 and the first quiet knife 8, the processing of the first moving knife 4
For rectangular parallelepiped structure and positioned at the top of the first quiet knife 8, and the first quiet knife 8, the first moving knife 4 are all made of 9CrSi material, hardness
HRC=55-57, so as to which the strength and toughness requirement of cutter is effectively ensured, prevent in shear history cutter occur fracture and
Deformation, extends cutting-tool's used life.Wherein, as shown in Figure 1, being machined with locating slot on the first moving knife seat 3 in the present embodiment,
The side of first moving knife 4 be installed on the locating slot of the first moving knife seat 3 and be bolted it is connected, it is as shown in Figure 4, Figure 5, above-mentioned
The bottom surface of first moving knife 4 is the first moving knife cutting edge fac 402, and the first moving knife cutting edge fac 402 is processed as V-arrangement of the middle part to lower recess
Face optimizes the sinking degree of the first moving knife cutting edge fac 402 in the present embodiment, makes the first moving knife cutting edge fac 402
Middle part to the height d of lower recess be 5 thickness of channel steel to be cut 0.5-0.8, so as to ensure torsion suffered by channel steel and equipment
Minimum farthest reduces damage and environmental noise to mold and complete equipment, while can prevent to a certain extent
Only channel steel 5 occurs bending and deformation in process, is improved processing quality with precision.
Since the shearing force generated in shear history is larger, by the optimization design of the first moving knife cutting edge fac 402 certain
The bending deformation that channel steel 5 is subject to can be reduced in degree, but the twisting force that channel steel 5 is subject to is larger, still inevitably produces
Raw biggish degree of deformation to impact to following process quality and precision, and then leads to the quality of final gained sub-assembly
It is difficult to meet requirement.Based on problem above, channel steel 5 is processed using rectangular cut processing mold in the present embodiment
When, channel steel 5 is placed directly in the top of the first quiet tool apron 6, and guarantee on the inside of the side of the first moving knife 4 and the groove of channel steel 5
Wall fits, and so as to avoid influence of the above-mentioned twisting force to channel steel, and the positioning of channel steel 5 is used for, using this kind
Positioning method is easy to operate, and locating effect is preferable.It is optimized by the structure to the first moving knife cutting edge fac 402 to subtract
The part twisting force that channel bar is subject to, while remaining twisting force of the moving knife to channel steel being used to position channel steel, from
And channel steel 5 in shear history can be effectively prevent to occur bending and deformation, the precision and quality of following process has been effectively ensured.This reality
Apply the top surface transition that the side that the first moving knife 4 fits with channel steel recess sidewall in example passes through evacuation circular arc 401 and the first moving knife 4
Connection, to help to avoid 5 inner wall fillet of channel steel, convenient for the first quiet knife 8 puts in, while helping to ensure that the first moving knife
The compactness that 4 sides are bonded with channel steel inner wall enhances locating effect.The cutting edge and first of above-mentioned first quiet knife 8 in cutting process
There are horizontal clearance between the corresponding cutting edge of moving knife 4, which is the 0.05-0.1 of 5 thickness of channel steel to be cut, so as to
It effectively prevent shear history to generate flash and sting knife phenomenon, advantageously ensures that shearing quality.
As shown in Figure 3, Figure 4, the above-mentioned first quiet tool apron 6 is processed asShape structure, the first quiet knife 8 is by being detachably connected
It is installed on the inner sidewall of the first quiet tool apron 6 and formationShape structure, between the first quiet knife 8 and the inner sidewall of the first quiet tool apron 6
There are gap, gap width 2-3mm.The quiet knife 8 of the first of the present embodiment is by seperated molding quiet knife I 801, quiet knife II 802
Three inner sidewalls of the first quiet tool apron 6, and quiet knife I 801 and quiet knife II 802 are formed and are individually fixed in quiet knife III 803
Between and quiet knife III 803 and quiet knife II 802 between there is gap, the gap width be 2-3mm, consequently facilitating to each
The position of the quiet knife of piece is finely adjusted, and prevents burr.The junction of above-mentioned first quiet 6 adjacent inside side wall of tool apron is machined with first
Locating slot 603, which is arc-shaped structure, and its radius is 4-5mm, so as to effective dispersive stress
Distribution prevents the first quiet tool apron 6 in process from generating stress concentration, and then guarantees that processing performance is more preferable.
Three side walls of the first quiet tool apron 6 are machined with the first screw hole 601 and the second screw hole 602 in the present embodiment,
The side of first quiet knife 8 is machined with the third screw hole 804 communicated corresponding with the first screw hole 601, and the first screw hole 601
Internal diameter is greater than the diameter of its internal thread, and the internal diameter of the diameter and third screw hole 804 of the screw matches, and passes through the first screw hole
Gap between 601 and the second quiet knife 8 of screw adjustable first and the first quiet 6 inner sidewall of tool apron in screw hole 602 is simultaneously right
First quiet knife 8 is positioned.Wherein, drive the first quiet knife 8 to close to the first quiet tool apron by the screw in the first screw hole 601
6 direction is mobile, pushes the first quiet knife 8 to move to the direction far from the first quiet tool apron 6 by the screw in 602 hole of the second screw hole
It is dynamic, so as to realize the positioning accuracy and stability of the first quiet knife 8, prevent to deviate, and then influence shear precision.By
It is greater than the diameter of its internal thread in the internal diameter of the first screw hole 601, so as to prevent due to making first there are machining deviation
The problem of quiet knife 8 can not be installed is adjusted conducive to the installation site to the first quiet knife 8.
As shown in Fig. 6-Fig. 9, the triangle grooving processing mold of the present embodiment includes the second quiet knife 11 and the second moving knife 12,
Second moving knife 12 is processed as triangular prism structure and is located at the top of the second quiet knife 11, and the second quiet knife 11 and the second moving knife 12 are
Using 9CrSi material, hardness HRC=55-57.Above-mentioned second moving knife 12 is fixedly linked with the second moving knife seat (omitting in figure),
Second moving knife cutting edge fac 1201 is the inclined plane in the lateral other side where its sharp corner, and side where the sharp corner is corresponding thereto
The difference in height of side is the 0.5-0.8 of 5 thickness of channel steel to be cut, is carried out by the inclined degree to the second moving knife cutting edge fac 1201 excellent
Change design, so as to ensure the minimum of torsion suffered by channel steel 5 and equipment, farthest reduces to mold and complete equipment
Damage and environmental noise, and can effectively prevent channel steel 5 and occur bending and deformation.Above-mentioned second quiet 11 cutting edge of knife and 12 phase of the second moving knife
It answers between cutting edge there are horizontal clearance, which is the 0.05-0.1 of 5 thickness of channel steel to be cut, so as to effectively prevent
Shear history generates flash and stings knife phenomenon, advantageously ensures that shearing quality.As shown in Figure 8, Figure 9, the second of the present embodiment is dynamic
The sharp corner of knife 12 is machined with flat segments 1202, and the width of the flat segments 1202 is 2-3mm, so that shearing on the one hand can be reduced
The stress collection that 12 sharp corner of the second moving knife is subject in the process neutralizes deformation, helps to protect cutter, tool life；Separately
On the one hand by being processed as flat segments at tip that 5 base triangle of channel steel is slotted, so as to be done for lower road Bending Processing
Prepare, so that channel steel is readily bent molding, and have the gap 1.5-2mm after making 90 ° of bending, advantageously ensures that the welding jail of bending seam
Solidity and aesthetics, at the same can be effectively reduced in lower road bending process on the non-grooving side of channel steel 5 with triangle grooving wedge angle
The stress for locating corresponding region is concentrated and torsional deformation, guarantees subsequent bending quality.
Second moving knife 12 is equipped with extended segment 1203 far from sharp corner, and the width of the extended segment 1203 is 3-5mm, thus
The intensity of the second moving knife 12 can be effectively improved, true edge is provided for moving knife processing, while needing to carry out sharp angle, avoids nothing
Cutting edge occurs, and subsequent mold is prevented to hurt hand when assembling.
As shown in fig. 6, the second quiet tool apron 10 is processed as L shape structure, the second quiet knife 11 is installed on the second quiet knife
The inner sidewall of seat 10 simultaneously forms L shape structure, and the quiet knife 11 of the second of the present embodiment is by the molding quiet knife IV 1101 of fission and quiet knife
V 1102 is formed and is individually fixed in two inner sidewalls of the second quiet tool apron 10.Two inner sidewall junctions of the second quiet tool apron 10 add
Work has L shape positioning step and the second locating slot 1001, which is arc-shaped structure, and its radius is 4-
5mm.There is also gaps between above-mentioned second quiet knife 11 and the second quiet tool apron 10 in the present embodiment, and its gap is adjustable, specific to adjust
Section structure is the same as rectangular cut processing mold.
The Bending Processing mold of the present embodiment, which is used to be bent along the vertex of triangle grooving by the channel steel after cutting, to be added
Work, as shown in Figure 10-Figure 12, above-mentioned Bending Processing mold includes bending punch-pin 13 and bending female die 14, and bending punch-pin 13 includes
Bending punch-pin 13 is installed to by mounting portion 1301, interconnecting piece 1302 and the bending part 1303 set gradually by mounting portion 1301
On upper die of bending machine plate, the bending part 1303 is used to carry out bending to channel steel, is processed as L-shaped structure.The bending is recessed
The top of mould 14 is machined with the L shape cavity plate slot 1401 matched with the bending part 1303 of bending punch-pin 13.As shown in Figure 1, will open
Channel steel after slot is placed in 14 top of bending female die, drives bending punch-pin 13 to move downward by hydraulic system, to realize bending
Processing, shown in the structure of gained bending part such as Fig. 1 (b), formation one is straight between two sides of channel steel base triangle grooving
Gap, be convenient for subsequent welding, and can guarantee the aesthetics of weld seam.As shown in Figure 10, Figure 11, add on the bending punch-pin 13
Work has bit-avoiding slot 1304, and the 1304 face channel steel of bit-avoiding slot setting (is machined with square so as to which channel steel upper side is effectively ensured
The side of shape fluting) bending is normally carried out.As shown in Figure 10, Figure 12, the bottom of the L shape cavity plate slot 1401 is machined with downwards
On the other hand the yielding slot 1402 of recess can guarantee so that the stress that channel steel in process on the one hand can be alleviated is concentrated
The abundant bending of channel steel, and make the bending part rounding off to be formed, the stress for reducing bending part in bending corner is concentrated, thus
Guarantee its service performance.In addition, the L shape cavity plate slot 1401 and the junction of 14 top planes of bending female die are machined with circular arc
1403,1403 radius of circular arc is 4-5mm, so as to guarantee fitting closely for channel steel and bending female die 14 in bending process, into
The abundant progress of one step guarantee bending.
Embodiment 3
A kind of channel steel fluting bending sub-assembly processing unit (plant) of the present embodiment, structure is the same as embodiment 2.
A kind of channel steel fluting bending sub-assembly processing method of the present embodiment, by the rectangular cut processing mould of the present embodiment
Tool, triangle grooving processing mold and Bending Processing mold are respectively arranged on lathe, wherein the first quiet tool apron 6 and second is quiet
Tool apron 10 is installed on platen by the first lower template 7, the second lower template 9 respectively, the first moving knife seat 3 and the second moving knife
Seat (omitting in figure) is fixedly linked by the first cope plate 2, the second cope plate (omitting in figure) with lathe upper junction plate 1 respectively.
A rectangular slot is processed in the side of channel steel 5 to be processed first with rectangular cut processing mold, then utilizes triangle grooving
Processing mold processes triangle fluting in 5 bottom surface of channel steel, carries out bending machining to channel steel 5 followed by Bending Processing mold,
Finally the seam of bool weld up to sub-assembly, in which:
The specific processing technology of channel steel side rectangular cut are as follows: (1) channel steel 5 to be processed is placed on the first quiet tool apron 6
Side, makes 5 side of channel steel wait for that slotting position is corresponding with the cutting edge position of the first quiet knife 8, adjusts 4 position of the first moving knife, makes its side
Face channel steel 5 groove in face simultaneously fits closely 4 side of the first moving knife and the recess sidewall of channel steel 5 to be processed, so as to cut
Channel steel 5 is positioned by the twisting force of the first moving knife 4 during cutting, channel steel 5 can be effectively prevent to be distorted deformation,
Reduce influence of its degree of deformation to subsequent machining technology and final gained sub-assembly quality.It carries out positioning through the above way opposite
It is simple that positioning one side positioning operation is carried out by fixed device in the prior art, is filled it is not necessary that special positioning is additionally arranged
It sets, is conducive to save the cost, on the other hand can also effectively prevent channel steel 5 being fixed using fixed device to position time slot
The phenomenon that steel 5 still inevitably deforms.Meanwhile the cutting edge port of the first moving knife 4 and phase on the first quiet knife 8 after adjustment
Answering the spacing between cutting edge port is the 0.05-0.1 of 5 thickness of channel steel to be cut.(2) it is driven by hydraulic system of hydraulic machine hydraulic
Cylinder pushes the first cope plate 2 to move down, and then the first moving knife 4 is driven to move down the rectangular cut progress to 5 side of channel steel
Processing.
The specific processing technology of channel steel base triangle grooving are as follows: channel steel 5 to be processed is placed on the second quiet tool apron 10
Side, makes channel steel bottom surface wait for that slotting position is corresponding with the position of the second quiet knife 11, passes through hydraulic system of hydraulic machine driving hydraulic cylinder
It pushes the second cope plate to move down, and then the second moving knife 12 is driven to move down the triangle grooving progress to 5 bottom surface of channel steel
Processing, there are the flat segments that width is 2-3mm for the sharp corner of the triangle grooving processed, so as to be subsequent bending deformation
It prepares, is conducive to channel steel and deforms, while the stress that can be effectively reduced bending deformation process intermediate cam shape grooving sharp corner is concentrated
And on channel steel unslotted side degree of deformation, guarantee 90 ° of rear triangle grooving two sides of bending there are the gap of 1.5-2mm, into
And it advantageously ensures that the fastness of subsequent welding and the quality of aesthetics and final gained sub-assembly and is met the requirements with precision.This
Right angle end processes two bolts hole on the second quiet tool apron 10 in embodiment, installs an adjustable positioning plate herein, mixes up balance position
It sets and is compressed positioning plate with bolt, river channel steel to be processed is lain against on the second quiet tool apron 10, and process side is not close to positioning plate
Channel steel is positioned (shown in figure, using other positioning methods can also, as long as being able to achieve the positioning function of channel steel).
Bending deformation: channel steel 5 is placed on bending female die 14, drives bending punch-pin 13 downward by hydraulic system of hydraulic machine
It is mobile, so that channel steel is carried out bending along the center line of triangle grooving, until the two sides phase of gained bending part intermediate cam shape grooving
It is mutually parallel.
Welding: the gap between gained bending part intermediate cam shape grooving two sides is welded to get required sub-assembly.
The present embodiment carries out grooving and bending machining to channel steel by three molds of design, so as to significantly improve processing
Efficiency, reduces the labor intensity of worker, and improves the processing quality of each road manufacturing procedure, prevents flash, guarantees notch
Planarization.When being processed using mold to the grooving on channel steel, since shearing force is larger and is unevenly distributed, channel steel 5 vulnerable to
To biggish twisting force and then serious bending deformation occurs, and then influences following process quality and precision.Therefore, processed
The bending deformation that channel steel is subject in journey is the biggest factor for influencing final gained sub-assembly quality, how to improve processing efficiency
On the basis of to prevent channel steel from occuring bending and deformation be inventor's problem most to be solved.The present invention passes through the specific knot to each mold
Structure optimizes, and by the mutual cooperation between each manufacturing procedure, so as to guarantee the position of various processes processing
With dimensional accuracy, channel steel is avoided to occur bending and deformation, and then ensure that the processing quality of final gained sub-assembly is met the requirements.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (10)
1. a kind of processing method of channel steel fluting bending sub-assembly, it is characterised in that: cut rectangular cut processing mold, triangle
Slot processing mold and Bending Processing mold are respectively arranged on lathe, first with rectangular cut processing mold in channel steel to be processed
(5) side processes a rectangular slot, then processes a triangle in channel steel (5) bottom surface using triangle grooving processing mold and opens
Slot carries out bending machining to channel steel (5) followed by Bending Processing mold, finally weld up to group to the seam of bool
Component, in which:
The specific processing technology of channel steel side rectangular cut are as follows: channel steel to be processed (5) is placed in above the first quiet tool apron (6),
Its first moving knife of groove face (4) side, and guarantee that the first moving knife (4) side and the recess sidewall of channel steel to be processed (5) are affixed
It closes；It pushes the first cope plate (2) to move down by hydraulic system of hydraulic machine driving hydraulic cylinder, and then drives the first moving knife (4)
It moves down and the rectangular cut of channel steel (5) side is processed；
The specific processing technology of channel steel base triangle grooving are as follows: channel steel to be processed (5) is placed on the second quiet tool apron (10)
Side, makes channel steel bottom surface wait for that slotting position is corresponding with the position of the second quiet knife (11), is driven by hydraulic system of hydraulic machine hydraulic
Cylinder pushes the second cope plate to move down, and then drives the second moving knife (12) to move down and cut to the triangle of channel steel (5) bottom surface
Slot is processed, and there are the flat segments that width is 4-5mm for the sharp corner of the triangle grooving processed；
Bending deformation: channel steel (5) is placed on bending female die (14), by hydraulic system of hydraulic machine drive bending punch-pin (13) to
Lower movement makes channel steel carry out bending along the center line of triangle grooving, until the two sides of gained bending part intermediate cam shape grooving
It is parallel to each other.
Welding: the gap between gained bending part intermediate cam shape grooving two sides is welded to get required sub-assembly.
2. a kind of processing method of channel steel fluting bending sub-assembly according to claim 1, it is characterised in that:
The rectangular cut processing mold includes the first moving knife (4) and the first quiet knife (8), wherein the first moving knife (4) and first
Moving knife seat (3) is fixedly linked, and the first moving knife cutting edge fac (402) is V-arrangement face of the middle part to lower recess；First quiet knife (8) installation
In the first quiet tool apron (6) and formedShape structure；
The triangle grooving processing mold includes the second quiet knife (11) and the second moving knife (12), wherein the second moving knife (12)
It is fixedly linked with the second moving knife seat, the second moving knife cutting edge fac (1201) is from its sharp corner to the inclined plane in the other side；The
Two quiet knives (11) are installed on the second quiet tool apron (10) and form L shape structure.
The Bending Processing mold includes bending punch-pin (13) and bending female die (14), and the bottom of bending punch-pin (13) is downwardly convex
The at L-shaped bending part of shape (1303) is played, the bending part with bending punch-pin (13) is machined at the top of the bending female die (14)
(1303) the L shape cavity plate slot (1401) matched.
3. a kind of processing method of channel steel fluting bending sub-assembly according to claim 2, it is characterised in that: described first
The middle part of moving knife cutting edge fac (402) to the height d of lower recess be channel steel to be cut (5) thickness 0.5-0.8, second moving knife
The sharp corner of cutting edge fac (1201) corresponding thereto side difference in height be channel steel to be cut (5) thickness 0.5-0.8.
4. a kind of processing method of channel steel fluting bending sub-assembly according to claim 3, it is characterised in that: described the
One quiet tool apron (6) is processed asShape structure, the first quiet knife (8) are installed on the inner sidewall of the first quiet tool apron (6)；Described second
Quiet tool apron (10) is processed as L shape structure, and the second quiet knife (11) is installed on the inner sidewall of the second quiet tool apron (10), and the first quiet knife
The junction of seat (6) adjacent inside side wall is machined with the first locating slot (603), and two inner sidewall junctions of the second quiet tool apron (10) add
Work has the second locating slot (1001).
5. a kind of processing method of channel steel fluting bending sub-assembly according to claim 3, it is characterised in that: described first
Between the cutting edge cutting edge corresponding to the first moving knife (4) of quiet knife (8) and the second quiet knife (11) cutting edge and the second moving knife (12) are corresponding
There is horizontal clearance between cutting edge, which is the 0.05-0.1 of channel steel to be cut (5) thickness.
6. a kind of processing method of channel steel fluting bending sub-assembly according to claim 4, it is characterised in that: described the
One quiet knife (8) is made of seperated molding quiet knife I (801), quiet knife II (802) and quiet knife III (803), and quiet knife I (801) and
There is gap between quiet knife II (802) and between quiet knife III (803) and quiet knife II (802), which is 2-
3mm；The quiet knife of described second (11) is made of seperated molding quiet knife IV (1101) and quiet knife V (1102).
7. a kind of processing method of channel steel fluting bending sub-assembly according to claim 1 to 6, feature exist
In: the quiet knife of described first (8), the first moving knife (4), the second quiet knife (11) and the second moving knife (12) are all made of 9CrSi material,
Hardness HRC=55-57；Bit-avoiding slot (1304) are machined on the bending punch-pin (13), which sets
It sets, the bottom of the L shape cavity plate slot (1401) is machined with the yielding slot (1402) to lower recess.
8. a kind of processing method of channel steel fluting bending sub-assembly according to claim 1 to 6, feature exist
In: when being processed using rectangular cut processing mold to channel steel (5), the channel steel (5) is placed in the first quiet tool apron (6)
Top, and the side of the first moving knife (4) and the groove inner sidewall of channel steel (5) fit, and the first moving knife (4) and channel steel (5) are recessed
The side that groove sidewall fits is connect by avoiding circular arc (401) with the top surface transition of the first moving knife (4).
9. a kind of processing method of channel steel fluting bending sub-assembly according to claim 8, it is characterised in that: described first
Three side walls of quiet tool apron (6) are machined with the first screw hole (601) and the second screw hole (602), the side of the first quiet knife (8)
It is machined with the third screw hole (804) communicated corresponding with the first screw hole (601), and the internal diameter of the first screw hole (601) is greater than
The internal diameter of the diameter of its internal thread, the diameter and third screw hole (804) of the screw matches, and passes through the first screw hole (601)
And the second screw in screw hole (602) adjusts the gap between the first quiet knife (8) and the first quiet tool apron (6) inner sidewall and to the
One quiet knife (8) is positioned.
10. a kind of channel steel fluting bending sub-assembly processing unit (plant) according to claim 1 to 6, feature exist
In: the sharp corner of second moving knife (12) is machined with flat segments (1202), and the width of the flat segments (1202) is 2-3mm, and
Second moving knife (12) is equipped with extended segment (1203) far from sharp corner, and the width of the extended segment (1203) is 3-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811257585.XA CN109433904B (en) | 2016-12-13 | 2016-12-13 | Processing method of channel steel slotting and bending assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611145674.6A CN106734518B (en) | 2016-12-13 | 2016-12-13 | A kind of channel steel fluting bending sub-assembly processing unit (plant) and processing method |
| CN201811257585.XA CN109433904B (en) | 2016-12-13 | 2016-12-13 | Processing method of channel steel slotting and bending assembly |
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| CN201611145674.6A Division CN106734518B (en) | 2016-12-13 | 2016-12-13 | A kind of channel steel fluting bending sub-assembly processing unit (plant) and processing method |
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| CN201611145674.6A Expired - Fee Related CN106734518B (en) | 2016-12-13 | 2016-12-13 | A kind of channel steel fluting bending sub-assembly processing unit (plant) and processing method |
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| CN110773814B (en) * | 2019-11-25 | 2020-07-24 | 新沂天源节能材料有限公司 | Safe type aluminum alloy cutting equipment |
| CN114618940B (en) * | 2022-04-11 | 2024-06-04 | 南通德纳鑫金属门窗有限公司 | Metal raw material bending equipment for building door and window molding |
| CN115301825B (en) * | 2022-08-08 | 2024-10-11 | 深圳市同亮采光电科技有限公司 | Full-automatic bending machine |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106734518B (en) | 2019-01-29 |
| CN109433904B (en) | 2020-05-08 |
| CN106734518A (en) | 2017-05-31 |
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