CN107716758A - The flexible feed device and its bending machine of a kind of bending machine - Google Patents
The flexible feed device and its bending machine of a kind of bending machine Download PDFInfo
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- CN107716758A CN107716758A CN201711030761.1A CN201711030761A CN107716758A CN 107716758 A CN107716758 A CN 107716758A CN 201711030761 A CN201711030761 A CN 201711030761A CN 107716758 A CN107716758 A CN 107716758A
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- traversing
- feeding
- roller
- bending machine
- vehicle frame
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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
- 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
-
- 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
- B21D43/08—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers
-
- 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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/16—Auxiliary equipment, e.g. for heating or cooling of bends
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses a kind of flexible feed device of bending machine and its bending machine, belongs to bending machine field.Traversing part includes traversing vehicle frame and flexible drive mechanism in the device, and traversing vehicle frame is arranged on feeding part by traversing line slideway auxiliary, and traversing vehicle frame connection clip holds part；Flexible drive mechanism includes nut seat, captive nut and traversing leading screw, nut seat and is arranged on feeding part, and captive nut is arranged in the endoporus of nut seat by key, and captive nut both sides respectively set a floating guide pin bushing by spring compression；Traversing leading screw is arranged on traversing vehicle frame, and it is connected with captive nut, and is driven by the traversing motor on traversing vehicle frame.The rigidity vibration of pipe fitting is transformed into flexibility, can absorb vibration force, so as to ensure the stability of feed device precision, extend its service life by flexible feed device by using buffer structure in bending machine of the present invention.
Description
Technical field
The invention belongs to bending machine technical field, a kind of flexible feed device more specifically to bending machine and its
Bending machine.
Background technology
Bending machine is generally divided into two kinds of hydraulic pressure and numerical control, and hydraulic pipe bender is pure hydraulic-driven, and CNC tube bending machine be
PLC control system is added on the basis of hydraulic pipe bender, realizes digital information control.Wherein, should with CNC tube bending machine
With the most extensively, being related to automobile, the various metal winding pipes on aircraft/train, the various bend pipes of medical production equipment, electricity generation boiler
Various bend pipes in system etc..
CNC tube bending machine is mainly made up of mechanical part, hydraulic system and PLC control system three parts, and mechanical part is again
Mainly include tube clamping device, bend pipe transmission device, assist device, lathe bed and bending die etc..The operation principle of bend pipe is：It is curved
Pipe die is fixed on main shaft and rotated with main shaft, and pipe is fixed on by clamping die on the clamping slot of fan-shaped bending die, is moved
Dynamic formula boosting is oriented to the curved outside that binder chute is close to pipe, and when bending die turns round an angle, pipe is just wrapped in
The circumference of bending die, the anglec of rotation of bending die is angle of bend, and the radius of bending die determines the bending radius of pipe.Pipe
Part is sent into bending die by feed device and bent, and adjusts the horizontal level of key, and during three-dimensional bending tube
Corner, therefore, feed device are parts essential on bending machine.
Feed device generally comprises the feeding trolley being slidably arranged on fuselage guide rail, the feeding being arranged on feeding trolley
Transmission mechanism, pushing clamping sleeve, the transmission device for driving pushing clamping sleeve rotation and the clamp for being arranged on pushing clamping sleeve end, clamp is by being arranged on
The clamping cylinder transmission at pushing clamping sleeve rear portion, feeding drive mechanism drive feeding trolley to be slided on guide rail by motor.Its work
It is that tubing to be processed is clamped by clamp as principle, makes feeding trolley promote tubing to be done towards curved mould by feeding drive mechanism
Intermittence linear motion, tubing pause when, bending machine to tubing carry out bending, feed device is restarted after bending, by tubing to
Before be sent to next position for needing bending, until tubing each several part bending set in advance is all completed, feed device returns to
It is in situ.
In practice, the bending circle of the clamp center line of feed device and bending die is tangent, is protected all the time during whole bend pipe
Hold it is constant but far apart between feed device and bending die, to meet feeding demand, even for some long tubes, feeding dress
Put also need come and go feeding it is multiple, therefore, when tubing is between feed device and bending die, the small radial direction at bending die is trembled
Dynamic, tens of hundreds of times can be exaggerated by being delivered at feed device, and strong impact can be produced to feed device, can not only hinder to send
Pipe, and can have a strong impact on the precision of feed device, reduce its service life, using after a period of time, it is necessary to be tieed up to it
Shield debugging, to ensure bend pipe precision.
In the prior art for the Improvement of bending machine feed device, the essence of itself running fix is focused primarily upon
Degree, and it is unaware that above mentioned problem.For example, applicant applied it is entitled：A kind of bending machine feed mechanism (application number：
201420819869.4) utility model patent, the feed mechanism include support, frame, feeding body and feed gearing,
Feed gearing includes feeding motor and feeding track；Feeding track is located at the top of support, and the top of feeding track is provided with
Bottom plate；The side of bottom plate is provided with offset assembly；Offset assembly includes excursion motor and offset rail；Offset rail is located at bottom plate
On, it is vertical with feeding track；Frame is located on feeding track, and frame is provided with mould changing device；Mould changing device include mold changing motor,
Change the mold oil cylinder and mold changing track；It is vertical with bottom plate to change the mold track；Feeding body is vertically mounted on mold changing track.It is mainly improved
The precision of feeding in the case of heavy load, but also it is unaware that the shake of pipe to feed device adverse effect.
In addition, bending machine before bend pipe, it is necessary to which pipe fitting is aligned and is inserted into feed device, so as to which pipe is sent into bend pipe
Mould carries out bending, and traditional bending machine typically carries out feeding operation using artificial, wasted time and energy, efficiency is low, also easily causes safety
Accident.For this problem, also there is corresponding solution in the prior art, as Chinese Patent Application No. is：
201310612152.2 publication date is：The patent document of on 2 19th, 2014, a kind of automatic charging bending machine is disclosed, including
Feed guiding assemblage, bend pipe assembly and material returned assembly；The charging guiding assemblage includes：Material jacking mechanism, retainer guide plate mechanism,
Guide pipe mechanism, discharging frame and blanking mechanism；The bend pipe assembly includes：Clamping, for the materials in the tube after charging to be clamped；It is curved
Mould, it can be rotated under drive mechanism drive centered on clamping, for bend pipe；The material returned assembly includes mandrel, the material returned
Pipe, drive mechanism.Charging guiding assemblage in this bending machine can realize automatic loading and unloading, but the bending machine structure is with more than
The CNC tube bending machine of description is otherwise varied, and it is loaded into feed device not by charging guiding assemblage, but directly carries out
Bend pipe, and it also for the bending of shorter tube part, material jacking mechanism stroke is limited, can not expect to carry out feeding and feeding to long,
Limitation is stronger, and structure is also relative complex.
The content of the invention
1st, to solve the problems, such as
The present invention provides a kind of flexible feed device of bending machine, and its object is to solve existing feed device feeding process
In cause feed device precision to reduce and the problem of the lost of life due to the shake of pipe fitting.The present invention feed device by using
Buffer structure, the rigidity vibration of pipe fitting is transformed into flexibility, vibration force is can absorb, so as to ensure the stabilization of feed device precision
Property, extend its service life.
In addition, the present invention also provides a kind of bending machine for including above-mentioned flexible feed device, increase charging on its basis
Pusher, it can will treat that bend pipe is sent into flexible feed device automatically, improve bending machine loading efficiency.
2nd, technical scheme
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of flexible feed device of bending machine, including the hold assembly of bend pipe is treated for clamping, for driving clamping part
The traversing part that part edge is moved perpendicular to pipe fitting feed direction, and the feeding for driving traversing part to be moved along feed direction
Part；Described traversing part includes traversing vehicle frame and flexible drive mechanism, and traversing vehicle frame is set by traversing line slideway auxiliary
On feeding part, traversing vehicle frame connection clip holds part；The flexible drive mechanism includes nut seat, captive nut and traversing silk
Thick stick, nut seat are arranged on feeding part, and captive nut is arranged in the endoporus of nut seat by key, and captive nut both sides are respectively set
A floating guide pin bushing is put, floating guide pin bushing passes through spring compression captive nut both ends；The traversing leading screw is arranged on traversing vehicle frame,
It is connected with captive nut, and is driven by the traversing motor on traversing vehicle frame.
As a further improvement, the endoporus of the nut seat is the big shoulder hole in middle small both ends, in big aperture intersection
Form step surface, endoporus both ends installation end cap；The floating guide pin bushing is located in the large hole at both ends, and, bullet spacing by step surface
Spring is limited between end cap and floating guide pin bushing.
As a further improvement, the traversing line slideway auxiliary includes the traversing guide rail to cooperate and traversing sliding block, it is horizontal
Move sliding block to be arranged on feeding part, traversing guide rail is arranged on traversing vehicle frame.
As a further improvement, the feeding part includes feeding vehicle frame and feeding motor, feeding vehicle frame is led by straight line
The secondary side for being arranged on bend pipe machine worktable of rail, feeding motor is arranged on feeding vehicle frame, and is connected with feeding tooth by feed spool
Wheel, feeding gear are connected with being arranged at the rack-driving of workbench side.
A kind of bending machine, including the flexible feed device that power is above-mentioned, and for that will treat that bend pipe is sent into flexible feed device
Charging pusher；The charging pusher includes cage, roller rotary driving part, roller driven in translation part and rolling
Take turns clamping part；The roller clamping part includes being arranged at the pair roller above cage by a pair roller slide；It is described
Roller rotary driving part is used to drive a pair roller synchronous axial system；The roller driven in translation part is used to drive a pair roller
Slide is mutually closer or far from making a pair of rollers clamp or unclamp and treat bend pipe.
As a further improvement, the roller rotary driving part includes rotary power component and two groups of Hooks coupling universal couplings,
Every group of at least two Hooks coupling universal couplings, rotary power component drive a roller respectively by two groups of Hooks coupling universal couplings.
As a further improvement, every group of Hooks coupling universal coupling is two neighboring to connect a transition axis, two transition respectively
One end of axle is connected by both ends of the key respectively with transition adjusting set.
As a further improvement, the roller driven in translation part includes translation Power Component, splined shaft and fork B；Institute
The both ends for stating splined shaft are fixed in the shaft seat in cage；One end connection splined shaft of the fork B, the other end are connected with cunning
Block B, slide block B are arranged in the guide hole of roller slide；The translation Power Component driving splined shaft rotates.
As a further improvement, the translation Power Component includes clamping cylinder, synchronization steering block and fork A；The folder
Tight cylinder is arranged in cage, and it connects synchronization steering block, and the both sides of synchronization steering block open up two symmetrical guide grooves, each led
A sliding block A is provided with groove；One end connection sliding block A of the fork A, other end connection splined shaft.
As a further improvement, having deep-slotted chip breaker on the outer peripheral face of the roller, and a plurality of ditch vertically is opened up thereon
Groove.
3rd, beneficial effect
Compared to prior art, beneficial effects of the present invention are：
(1) flexible feed device of bending machine of the present invention, the biography of existing screw pair relative stiffness is changed breakthroughly
Dynamic attachment structure, is designed on traversing part using flexible transmission structure, by the way that captive nut is slidably mounted at into nut seat
Endoporus in, its both ends is withstood by floating guide pin bushing, and pass through spring compression, formed compliant rotational structure；This structure, traversing part
Soft start can be carried out, that is, starts moment, traversing motor drives traversing leading screw to rotate, and traversing leading screw drives captive nut first to compress one
Section spring, then reaction drives the traversing traversing action of vehicle frame by traversing leading screw again, small so as to start impulsive force；In addition, more
Importantly, particularly with bending machine bending die with respect to hold assembly farther out when, trickle transversal wave movement at bending die, transmit
To larger amplitude can be produced during hold assembly, impact is produced to device, by such a flexible transmission structure, can obtain well
Buffering release, so as to ensure the stability of feeding and accuracy, extension device life-span.
(2) flexible feed device of bending machine of the present invention, the traversing line slideway auxiliary between traversing part and feeding part
Fixed using traversing sliding block, and the structure type of traversing guide rail motion, traversing distance can be extended, shorten traversing rail length, and
Be not in that existing line slideway auxiliary is extended above bend pipe machine worktable, in feeding process, other parts on workbench are produced
Go out the problem of interfering.
(3) flexible feed device of bending machine of the present invention, feeding part drive feeding gear and work by feeding motor
The engaged transmission of platform upper rack, feeding part is set to drive hold assembly to bending die feeding.
(4) bending machine of the present invention, by feeding the cooperation of pusher and flexible feed device, the charging of pipe fitting can be carried out
With feeding automation mechanized operation, without being manually aligned pipe fitting and inserting hold assembly, so as to substantially reduce labor intensity, in raising
Expect speed and security, increase production efficiency.
(5) bending machine of the present invention, the knot of roller rotary driving part and roller driven in translation part in pusher is fed
Structure is ingenious in design rationally, on the premise of it can realize that a pair roller relative motion clamps materials in the tube, moreover it is possible to realizes that roller itself turns
It is dynamic to drive materials in the tube feed motion, complete the complex composite motion that the folder of roller one one is sent.
(6) bending machine of the present invention, feed pusher in roller driven in translation part structural framing it is ingenious, flexibly use
The transverse translation that the push pull maneuver up and down of clamping cylinder is converted into roller by linkage rod slide block mechanism acts, and can ensure a pair
Roller constant speed moves backward, and then ensures that every time clamped materials in the tube position is identical and accurate；And roller rotary driving part passes through
The transmission of Hooks coupling universal coupling, while realizing roller rotary drive, the movement of roller is suitable for, its two neighboring Hooks coupling universal coupling
Between using transition axis and transition adjusting set key connection form, can adjust the drive length of every group of Hooks coupling universal coupling, adapt to rolling
Take turns shift position change.
(7) bending machine of the present invention, feeds in pusher that deep-slotted chip breaker design is for stable holding pipe on roller outer peripheral face
Material, and the design of groove is then the stability for feeding, is less prone to skidding.
Brief description of the drawings
When Fig. 1 is that bending machine works, the working state schematic representation of feeding and feeding；
Fig. 2 is the dimensional structure diagram of the flexible feed device of bending machine of the present invention；
Fig. 3 is the main structure diagram of the flexible feed device of bending machine of the present invention；
Fig. 4 is the left view structural representation of the flexible feed device of bending machine of the present invention；
Fig. 5 is A-A sectional views in Fig. 3；
Fig. 6 is the close-up schematic view of B in Fig. 5；
Fig. 7 is the main structure diagram that pusher is fed in bending machine；
Fig. 8 is the overlooking the structure diagram that pusher is fed in bending machine；
Fig. 9 is the backsight structural representation that pusher is fed in bending machine；
Figure 10 is the section view partial view of E-E in Fig. 7；
Figure 11 is the section view partial view of F-F in Fig. 7；
Figure 12 is the dimensional structure diagram of automatic pipe turning feeding device in bending machine；
Figure 13 is the close-up schematic view of C in Figure 12；
Figure 14 is the main structure diagram of automatic pipe turning feeding device in bending machine；
Figure 15 is the left view structural representation of automatic pipe turning feeding device in bending machine；
Figure 16 is the section view partial schematic diagram of D-D in Figure 14.
Label in accompanying drawing is expressed as：
1st, hold assembly；
2nd, feeding part；210th, feeding vehicle frame；220th, feeding motor；230th, feeding gear；240th, bearing housing；250th, feeding
Axle；
3rd, traversing part；310th, traversing vehicle frame；320th, traversing line slideway auxiliary；321st, traversing guide rail；322nd, traversing sliding block；
330th, traversing motor；340th, flexible drive mechanism；341st, nut seat；342nd, captive nut；343rd, traversing leading screw；344th, float and lead
Set；345th, spring；346th, end cap；
4th, expects pipe frame；410th, material beam is put；420th, cloth beam；430th, backgauge component；431st, axle bed；432nd, damper shaft；433、
Striker plate；
5th, retainer part；510th, material supporting rack；520th, supporting roller base；521st, locating slot；530th, retainer wheel；540th, wheel shaft；550、
Protective plate；
6th, pipe driving part is turned over；610th, cylinder block；620th, pipe cylinder is turned over；630th, cylinder connection piece；
7th, Fan Guan mechanisms；710th, pull bar；711st, lower push pedal；712nd, upper push pedal；720th, drive connecting rod；730th, connecting rod branch
Seat；731st, pitman shaft；740th, follower link；750th, tube sheet is turned over；
8th, roller rotary driving part；810th, rotary power component；811st, electric rotating machine；812nd, driving gear set；813、
Bearing block；814th, synchromesh gear；815th, synchronizing shaft；820th, Hooks coupling universal coupling；830th, transition axis；840th, transition adjusting set；
9th, roller driven in translation part；910th, cylinder mounting plate；920th, Power Component is translated；921st, clamping cylinder；922、
Synchronization steering block；923rd, sliding block A；924th, fork A；930th, shaft seat；940th, splined shaft；950th, fork B；960th, slide block B；
10th, roller clamping part；1010th, roller slide；1011st, sliding part；1020th, roller；1021st, groove；1030th, roll
Wheel shaft；1040th, pressing plate；1050th, copper shoe；
11st, retainer component is aided in.
Embodiment
The present invention is further described below with reference to specific embodiments and the drawings.
Embodiment 1
As shown in figure 1, the present embodiment provides a kind of bending machine, its mainly by workbench, bending die, flexible feed device,
The part such as pusher and automatic pipe turning feeding device composition is fed, wherein workbench and bending die are existing middle common part,
It is not shown, flexible feed device and bending die are respectively provided with the table, and flexible feed device treats bend pipe for clamping
And it is passed to progress bending operation at bending die；And automatic pipe turning feeding device is used for batch placement and treats bend pipe, and it is accurate one by one
The standby feeding for treating bend pipe, passes to charging pusher, then pipe fitting further is delivered into flexibility by charging pusher by pipe fitting
Feed device, complete feeding operation.The bending machine is realized the feeding of bend pipe by the compounding practice of above-mentioned part, feeds and send
Expect Trinitarian automation mechanized operation, substantially reduce labor intensity, improve production efficiency, production security is protected.Below
By being structurally and functionally described in detail to each part, with the novelty of the prominent present invention.
Fig. 2 to Fig. 6 shows the structure of flexible feed device, and it mainly includes being used to clamp the hold assembly 1 for treating bend pipe,
For driving hold assembly 1 along the traversing part 3 moved perpendicular to pipe fitting feed direction, and for driving the traversing edge of part 3
The three parts of feeding part 2 of feed direction movement.Wherein, the materials in the tube that artificial or charging pusher is sent into by hold assembly 1
Clamp, deliver to bending die and carry out bending, while materials in the tube rotation can be driven in three-dimensional bending process；And the feeding of hold assembly 1
Action then drives completion by feeding part 2, and hold assembly 1 is existing many in the prior art, and the main improvement of the present invention is not
Here, therefore, its structure is not described in detail herein.
The size of bending die needs to be determined according to the diameter of pipe in actual use, is needed again when changing different bending dies
Adjust the lateral attitude of hold assembly 1, to ensure its feed direction and mandrel axially always, therefore, traversing part 3 be in order to
Adjust the lateral attitude of hold assembly 1.Clamping part is generally also realized using traditional screw nut driving structure in the prior art
The traversing action of part 1, but in actual use, hold assembly 1 from from bending die farther out it is specific it is intermittent by materials in the tube to bend pipe
Mould is pushed, and during bending die bend pipe, trickle shake is can hardly be avoided, and the trickle shake of bending die is transferred at hold assembly 1
Ten hundreds of times will be exaggerated, strong impact can be produced to feed device, can not only hinder to send pipe, and can have a strong impact on and send
Expect the precision of device, reduce its service life, using after a period of time, it is necessary to be maintained debugging, to ensure that bend pipe is smart
Degree.At present, few is aware of that this point, this is also that the present invention one of endeavours to solve the problems, such as.
With reference to shown in Fig. 2 to Fig. 6, feeding part 2 includes feeding vehicle frame 210 and feeding motor 220, and feeding vehicle frame 210 is logical
Cross the side that line slideway auxiliary is arranged on bend pipe machine worktable；Bearing housing 240 is installed on feeding vehicle frame 210, set in bearing housing 240
Feed spool 250 is put, feeding motor 220 is fixed on one end of bearing housing 240, and is connected with the rear end of feed spool 250, feed spool
250 front end is connected with feeding gear 230, and feeding gear 230 is connected with being arranged at the rack-driving of workbench side.So as to send
Material motor 220 drives feeding gear 230 to rotate by feed spool 250, the engaged transmission driving between feeding gear 230 and rack
Whole the moving along feed direction of feeding part 2, realizes hold assembly 1 to bending die feeding.
Traversing part 3 includes traversing vehicle frame 310 and flexible drive mechanism 340 positioned at the top of feeding vehicle frame 210, travelling platform
Frame 310 connects hold assembly 1, and its bottom is arranged on the feeding vehicle frame 210 of feeding part 2 by traversing line slideway auxiliary 320,
Flexible drive mechanism 340 drives transverse motion of the traversing vehicle frame 310 along vertical feed direction.What deserves to be explained is Flexible Transmission
Mechanism 340 is the innovative optimization design to traditional feed screw nut traditional structure, and it mainly includes nut seat 341, captive nut
342 and traversing leading screw 343；Wherein, nut seat 341 is arranged on feeding part 2, and it has the endoporus extended transversely through, and endoporus
For the big shoulder hole in middle small both ends, step surface is formed in big aperture intersection, captive nut 342 is arranged on nut seat by key
In the middle smaller hole of 341 endoporus, so as to which captive nut 342 may move in the endoporus of nut seat 341, without rotatable；Float
Respectively load a floating guide pin bushing 344 in the both sides of nut 342, i.e. the both ends large hole of the endoporus of nut seat 341, floating guide pin bushing 344 can
Spacing by the step surface of endoporus, the outside of floating guide pin bushing 344 is compressed by spring 345, so that floating guide pin bushing 344 is so as to floating
The both ends lateral surface compressing of nut 342, form balance, the both ends installation end cap 346 of the endoporus of nut seat 341, so as to which spring 345 is limited
System has precompression between end cap 346 and floating guide pin bushing 344 to floating guide pin bushing 344.The rear end of traversing leading screw 343 passes through axle
Hold case to be arranged on traversing vehicle frame 310, in the endoporus of its front end insertion nut seat 341, through floating guide pin bushing 344 and captive nut
342 drive connections, and its rear end connection is arranged on the traversing motor 330 on traversing vehicle frame 310.
From above structure, compared to the transmission connecting structure of existing screw pair relative stiffness, the present embodiment is broken through
Property on traversing part 3 using flexible transmission structure design, by the way that captive nut 342 is slidably mounted at into nut seat 341
Endoporus in, its both ends is withstood by floating guide pin bushing 344, and is compressed by spring 345, formed compliant rotational structure.Actually make
Used time, when needing to carry out the regulation of the lateral attitude of hold assembly 1, traversing part 3 can realize soft start, that is, start moment, horizontal
Moving motor 330 drives traversing leading screw 343 to rotate, and traversing leading screw 343 drives the spring 345 that first gradually reduces of captive nut 342 to buffer,
Then reaction drives traversing 310 traversing action of vehicle frame by traversing leading screw 343 again, small so as to start impulsive force.It is moreover, heavier
Want, when the bending die of bending machine with respect to hold assembly 1 farther out when, trickle transversal wave movement is transferred to clamping part at bending die
Larger amplitude can be produced during part 1, by such a flexible transmission structure, vibration is reached traversing vehicle frame 310 by hold assembly 1, horizontal
The oscillation crosswise of bogie 310 can promote the compression spring 345 of floating guide pin bushing 344, and then be avoided and buffered release, and this impact is not
Whole device can be transferred to, and ensures the stability and accuracy of feeding, the extension device life-span.
In addition, what traditional line slideway auxiliary typically used is all that guide rail is fixed, the structure shape that sliding block slides on guide rail
Formula, but in bender, if adopting the structure form, necessarily make it that feeding vehicle frame 210 extends to work in feeding part 2
To meet traversing 3 traversing distance requirement of part above platform, existing bending machine is similarly such a structure, and so can be in feeding
During feeding vehicle frame 210 can produce interference, the highly desirable raising of complete machine to other parts on workbench, and also to increase weight
Amount.Therefore, to solve this problem, traversing line slideway auxiliary 320 includes the traversing guide rail 321 and horizontal stroke to cooperate in the present embodiment
Sliding block 322 is moved, traversing sliding block 322 is arranged on feeding part 2, and traversing guide rail 321 is arranged on traversing vehicle frame 310.Such a knot
Configuration formula, is gone around, and traversing sliding block 322 is fixed, and traversing guide rail 321 moves, and can extend traversing distance, shortens traversing lead
The length of rail 321, so as to be not in that existing line slideway auxiliary is extended above bend pipe machine worktable, feeding vehicle frame 210 also just need not
Extend to above workbench, be not in the problem of other part outputs are interfered on workbench in feeding process.
Embodiment 2
For the present embodiment on the basis of embodiment 1, the structure of the charging pusher to bending machine optimizes design, with
Solve existing bending machine to be directed at materials in the tube and insert the problems such as hold assembly 1 is wasted time and energy, labor intensity is big, efficiency is low.This reality
Applying the charging pusher of a bending machine mainly includes cage, wheel rotary driving part 8, roller driven in translation part 9 and roller
Clamping part 10；Wherein, roller clamping part 10 includes being arranged at a pair of rollings above cage by a pair roller slide 1010
Wheel 1020；Roller rotary driving part 8 is used to drive the synchronous axial system of a pair roller 1020；Roller driven in translation part 9 is used to drive
The dynamic phase of a pair roller slide 1010 is closer or far from making a pair roller 1020 clamp or unclamp and treat bend pipe.
For this province of feeding, it is not difficult, also there is a variety of structures, such as welding wire during welding in the prior art
Conveying also carries out wire feed using a pair of similar wire feed rolls；But true difficulty, bending machine institute bending pipe fitting is larger longer, its
Feeding is not only needed, also pipe fitting is accurately sent into hold assembly 1, this just requires higher to feeding structure.In the present embodiment,
It is clamped using a pair roller 1020 and conveys materials in the tube, it requires materials in the tube can be put into a pair roller 1020 first；Then
One pair roller 1020 is close to each other and clamps materials in the tube, and after clamping materials in the tube axial location it is accurate；Finally, a pair roller
1020 rotation conveying materials in the tube.It can thus be seen that a pair roller 1020 has the compound movement of translation and itself rotation, for list
Individual problem, it is also not difficult to solve, such as only translation motion, can pass through the usual manners such as screw pair, cylinder or hydraulic oil cylinder driving
Realize；Only itself rotation can directly drive realization by motor.But two simply act it is compound after, it is also necessary to ensure precision
Demand, this with regard to the usual manner such as suitable difficulty, screw pair, cylinder or hydraulic oil cylinder driving realize translation motion it is difficult to ensure that
The synchronism of one pair roller 1020, positional precision is difficult to ensure that after clamping materials in the tube, and is more taken up space；Motor direct-drive roller
1020 rotation, its translation is difficult to realize again.
In view of the complexity of above mentioned problem, and specifically used practicality is combined, inventor touches by long-term practice
Rope accumulates, and designs the charging pusher of the present embodiment, pointedly solves the above problems.
With reference to shown in Fig. 7 to Figure 11, cage is made up of upper box and lower box, and its inside has space, to be driven
Part loads inside, and surrounding can be impaled with plate, form the casing of closing, compact-sized, attractive in appearance, and be not easy to fall into dust.Upper
The upper surface of casing opens up slotted eye, to install roller clamping part 10.Specifically, cunning is offered in the slotted eye both sides of upper box
Groove, the both sides of roller slide 1010 are provided with sliding part 1011 in roller clamping part 10, and sliding part 1011 is slidably arranged in chute
In, and the upside of sliding part 1011 is compressed by the pressing plate 1040 being fixed on upper box, so as to which a pair roller slide 1010 can
Along slide, make a pair roller 1020 close to each other or remote.In order to reduce the frictional force of the slip of roller slide 1010, make cunning
Move smooth and increase the service life, copper shoe 1050, sliding part 1011 and copper shoe 1050 are set in the outside of sliding part 1011
Contact slide.Vertical roller shaft 1030, the upper end installation roller of roller shaft 1030 are installed in roller slide 1010 by bearing
1020, its lower end connection roller rotary driving part 8, and roller slide 1010 connects roller driven in translation part 9.
With reference to shown in Fig. 7, Fig. 9 and Figure 11, roller rotary driving part 8 mainly includes rotary power component 810 and two groups
Hooks coupling universal coupling 820, every group of at least two Hooks coupling universal couplings 820, rotary power component 810 pass through two groups of Hooks coupling universal couplings
820 drive a roller 1020 respectively.Specifically, a uppermost Hooks coupling universal coupling 820 connects in every group of Hooks coupling universal coupling 820
The lower end of roller shaft 1030 is connect, and connects a transition axis 830 between two neighboring Hooks coupling universal coupling 820 respectively, two transition
One end of axle 830 is connected by both ends of the key respectively with transition adjusting set 840, can adjust the biography of every group of Hooks coupling universal coupling 820
Dynamic length, change in location is translated so as to adapt to roller 1020.Rotary power component 810 includes electric rotating machine 811, driving gear set
812 and bearing block 813；Wherein, electric rotating machine 811 is arranged on the lower box upper surface of upper box side, and bearing block 813 is installed
Inside lower box, a pair of vertical synchronizing shafts 815 are installed by bearing in bearing block 813；The upper end of a pair of synchronizing shafts 815 point
A bottom Hooks coupling universal coupling 820 in two groups of Hooks coupling universal couplings 820 is not connected, and the lower end of a pair of synchronizing shafts 815 is installed a pair
The synchromesh gear 814 of engagement, so as to ensure that the rotating speed of two synchronizing shafts 815 is equal；Electric rotating machine 811 passes through driving gear set
The 812 one of synchronizing shafts 815 of connection, the namely multipair meshed gears of driving gear set 812, to realize the transmission of transmission,
And reach slowing effect, it can be determined according to being actually needed, in the present embodiment, driving cog be formed using two pairs of meshed gears
Wheel group 812.From above structure, electric rotating machine 811 can pass sequentially through driving gear set 812, synchronizing shaft 815 and universal joint shaft
Torsion is passed to roller shaft 1030 by device 820, and so as to drive the synchronous axial system of a pair roller 1020, and such a structure does not influence a pair
Being mutually shifted between roller 1020.
In order to improve the accuracy that a pair roller 1020 clamps materials in the tube, and the stability of materials in the tube transmission, the present embodiment exist
Deep-slotted chip breaker is opened up on the outer peripheral face of roller 1020, can be bonded well with materials in the tube surface, clamping accuracy is high；And the periphery of roller 1020
A plurality of groove 1021 vertically is uniformly opened up on face, improves grip of the roller 1020 to materials in the tube surface, will not in course of conveying
Skid, ensure the stability of conveying.
With reference to shown in Fig. 7, Fig. 9 and Figure 10, roller driven in translation part 9 includes translation 920, two splined shafts of Power Component
940 and 2 fork B950；Wherein, the both ends of each splined shaft 940 are arranged at two of side in upper box by copper sheathing support
In shaft seat 930, and the both ends of the surface of splined shaft 940 use end cap stationary positioned；Fork B950 one end is connected to by spline
On splined shaft 940, the other end has slide block B 960 by pin connection, and slide block B 960 is arranged in the guide hole of roller slide 1010, and
With slidably contacting the surfaces for guide hole, so as to which the rotation of splined shaft 940 can be converted to cleverly to the translation of roller slide 1010.
Translation Power Component 920 is used to drive splined shaft 940 to rotate.It is, in general, that translation Power Component 920 can use it is more
Kind of form, such as motor, but it is difficult to ensure that the synchronism that two splined shafts 940 rotate, and roller 1020 is alternating translational movement,
It also is difficult to control using motor.Therefore, the present embodiment innovatively uses cylinder drive form, that is, translates Power Component 920 and wrap
Include clamping cylinder 921, synchronization steering block 922 and 2 fork A924；Wherein, clamping cylinder 921 is pacified by cylinder mounting plate 910
In upper box, it connects synchronization steering block 922, and the both sides of synchronization steering block 922 open up two symmetrical guide grooves, each lead
A sliding block A923 is provided with groove；2 fork A924 one end difference connection sliding block A923, the other end are connected by spline respectively
One splined shaft 940, so as to which the push pull maneuver up and down of clamping cylinder 921 to be converted into the rotation of splined shaft 940.
As can be seen here, the smart structural design of roller driven in translation part 9, linkage rod slide block mechanism has flexibly been used to clamp
The push pull maneuver up and down of cylinder 921 is converted into the transverse translation action of roller 1020, and can ensure pair roller 1020 etc.
Speed reverse movement, and then ensure that every time clamped materials in the tube position is identical and accurate；And roller rotary driving part 8 is by universal
The transmission of axle device 820, while realizing 1020 rotary drive of roller, it is suitable for the movement of roller 1020.
In addition, one auxiliary retainer component 11 is set along the direction of the feeding of a pair roller 1020 on upper box, to feeding
Carry out Auxiliary support；It includes bearing and is arranged on the roll shaft on bearing by bearing, and materials in the tube are supported on roll shaft, are further protected
Demonstrate,prove the accuracy of materials in the tube height and position in feeding process.
It will treat that bend pipe is sent into concretely comprising the following steps for hold assembly 1 using this device：First, it will treat that bend pipe is placed in roller clamping
Between one pair roller 1020 of part 10；Then, clamping cylinder 921 acts, and pulls synchronization steering block 922 to move down, and lead to
Crossing sliding block A923 drives fork A924 to rotate, and fork A924 and then drives splined shaft 940 to rotate, and splined shaft 940 drives fork
B950 is rotated, and fork B950 drives a pair roller slide 1010 to move towards by slide block B 960 again, until a pair roller 1020
Bend pipe is treated in clamping；Then, electric rotating machine 811 starts, and synchronizing shaft 815, a pair of synchronizing shafts 815 are driven by driving gear set 812
Synchronous axial system is realized by the synchromesh gear 814 of a pair of meshing thereon, the driving of roller shaft 1,030 one is driven through Hooks coupling universal coupling 820
Pair roller 1020 rotates backward, and will treat that bend pipe is sent into forward hold assembly 1.
It can be seen that the structure of roller rotary driving part 8 and roller driven in translation part 9 in the present embodiment charging pusher
It is ingenious in design reasonable, on the premise of it can realize that the relative motion of a pair roller 1020 clamps materials in the tube, moreover it is possible to realize roller 1020
Own rotation drives materials in the tube feed motion, completes the complex composite motion that the folder of roller 1,020 1 one is sent.
Embodiment 3
Although embodiment 2 has solved the problems, such as that materials in the tube are aligned and are sent into hold assembly 1 well, pusher is fed
, it is necessary to materials in the tube are put between a pair roller 1020 before materials in the tube are conveyed, if using artificial loading, it is wasted time and energy, labor
Fatigue resistance is big, and efficiency is also than relatively low.Therefore, using charging equipment improve artificial loading be undoubtedly it is best by the way of, this implementation
Example is just to provide an apparatus that solve the problems, such as to feed pusher feeding.
With reference to shown in Figure 12 to Figure 16, the present embodiment provides a kind of bending machine automatic pipe turning feeding device, main to include using
Treat the expects pipe frame 4 of bend pipe, retainer part 5 in placing, turn over pipe driving part 6 and Fan Guan mechanisms 7.Wherein, expects pipe frame 4 uses steel pipe
What is be welded into puts the framework for treating bend pipe, has thereon and between-line spacing has a pair of end to end put to expect beam 410 and cloth beam
420, the upper surface for putting material beam 410 is angled slightly downward, and the inclined-plane gradient of the upper surface of cloth beam 420 is larger, is arrived at 3 °
6 ° comparatively suitable, and the bottom on the inclined-plane of cloth beam 420 is provided with backgauge component 430 close to retainer part 5.When in use,
More are treated that bend pipe is placed on expects pipe frame 4, due to putting the inclination of material beam 410 and cloth beam 420, the meeting slide downward under deadweight, and
Stopped by backgauge component 430；Scroll down through when taking the other materials in the tube of materials in the tube away, stopped again by backgauge component 430 successively.
Retainer part 5 has a pair, is correspondingly arranged at the front of a pair of cloth beams 420 respectively, and each retainer part 5 includes
Material supporting rack 510, supporting roller base 520 and retainer wheel 530；Wherein, supporting roller base 520 is arranged on material supporting rack 510, and retainer wheel 530 is set
On supporting roller base 520.Ensure that axis opens up in sustained height, supporting roller base 520 during in order to adapt to different model materials in the tube feeding
There are multiple locating slots 521 that a row is highly different, retainer wheel 530 is arranged on wheel shaft 540, and the both ends of wheel shaft 540 are supported on positioning
In groove 521, so as to select the height of the i.e. adjustable retainer wheel 530 of different locating slots 521, when ensureing different-diameter roller feeding
Axial height is consistent.In addition, when materials in the tube are rolled on retainer wheel 530 on expects pipe frame 4, there is certain kinetic energy, retainer may be gone out
Take turns 530 and drop, therefore the present embodiment is provided with material supporting rack 510 for preventing from treating that bend pipe drops anti-on retainer wheel 530
Backplate 550, it is more that protective plate 550 by an end position in the outside of retainer wheel 530 will be higher by retainer wheel 530, can effective backgauge,
Materials in the tube are avoided to tumble.
How materials in the tube are placed on retainer wheel 530 from expects pipe frame 4, but also to ensure that materials in the tube end is put into a pair roller
Between 1020, this is only where the maximum difficult point of the present apparatus.The present embodiment is realized by turning over pipe driving part 6 and Fan Guan mechanisms 7
Above-mentioned action, with reference to shown in Figure 14 and Figure 16, each material supporting rack 510 is respectively provided with a Ge Fanguan mechanisms 7, and Fan Guan mechanisms 7 include solid
The connecting rod support 730 and follower link 740 of the side of material supporting rack 510 are scheduled on, pitman shaft 731 is set on connecting rod support 730；Driven company
By key connection pitman shaft 731, the other end, which is connected with, turns over tube sheet 750 for one end of bar 740, and the upper surface for turning over tube sheet 750 is inclined-plane,
Axis of the Plane of rotation of pitman shaft 731 perpendicular to materials in the tube；Turn over pipe driving part 6 and be used for drive link axle 731.
To ensure to remain horizontal in materials in the tube feeding process, it is desirable to which Liang Gefanguan mechanisms 7 must synchronization action；Even,
When materials in the tube are very long, it is necessary to which more automatic pipe turning feeding devices act simultaneously, this requires higher for turning over pipe driving part 6.Such as
Shown in Figure 14, the present embodiment Fan Guan mechanisms 7 also include pull bar 710 and drive connecting rod 720, and the one end of drive connecting rod 720 passes through key
Pitman shaft 731 is connected, the other end is connected with the upper push pedal 712 on pull bar 710, so as to turn over pipe machine on multiple or more table apparatus
Structure 7 all may be connected on same pull bar 710 by drive connecting rod 720, then connect pull bar 710 by turning over pipe driving part 6,
Synchronization action can be achieved.Turning over pipe driving part 6 includes cylinder block 610, turns over pipe cylinder 620 and cylinder connection piece 630；Wherein,
Turn over pipe cylinder 620 to be arranged on cylinder block 610 by axle, can be swung so as to turn over pipe cylinder 620, turn over pipe cylinder 620 and pass through gas
Cylinder connector 630 connects the lower push pedal 711 on pull bar 710.So as to which pull bar 710, master can be passed sequentially through by turning over pipe cylinder 620
Dynamic connecting rod 720, pitman shaft 731 and follower link 740, driving are turned over tube sheet 750 and rotated, and complete feeding action.
It should be noted that turn over tube sheet 750 because follower link 740 can only drive and rotate, and without movement, to different straight
During the materials in the tube feeding of footpath signal, tube sheet 750 may be turned over and once hold up more than two materials in the tube, this is not permitted.Therefore, this reality
Apply example to be designed backgauge component 430, it includes axle bed 431 and at least one striker plate 433, at least one striker plate 433
It is arranged on by damper shaft 432 on axle bed 431, multiple striker plates 433 have different backgauge positions, so as to according to different pipes
Expect that diameter selects the striker plate 433 of suitable backgauge position, to ensure each feeding one.
Use said apparatus carry out feeding the step of for：First, it is suitable according to materials in the tube diameter, selection before pipe is placed
Backgauge position striker plate 433, and retainer wheel 530 is installed in the locating slot 521 of proper height；Then, will be to be curved
Pipe is placed on expects pipe frame 4；Then, turn over pipe cylinder 620 to act, drive the swing of pull bar 710, and drive drive connecting rod
About 720 rotations, and then drivening rod axle 731 rotates, pitman shaft 731 drives follower link 740 to rotate, and it is upward to turn over tube sheet 750
Upset, which plays tube top to be curved, departs from expects pipe frame 4, meanwhile, materials in the tube is axially pushed pipe forward along pipe；Finally, turn on tube sheet 750
Treat that bend pipe is rolled down on retainer wheel 530 along its upper end inclined-plane, the front ends of materials in the tube enters between a pair roller 1020, is pushed away for charging
The feeding of device is sent to be ready；So far, feeding action is completed；Repeat the above steps, sustainable progress feeding operation.
Summary embodiment understands that bending machine of the present invention passes through automatic pipe turning feeding device, charging pusher and soft
The cooperation of property feed device, can carry out feeding, charging and the feeding automation mechanized operation of pipe fitting, so as to substantially reduce labor intensity,
Feeding speed and security are improved, increases production efficiency.
Example of the present invention is only that the preferred embodiment of the present invention is described, not to present inventive concept and
Scope is defined, on the premise of design philosophy of the present invention is not departed from, technology of this area engineers and technicians to the present invention
The various modifications and improvement that scheme is made, all should fall into protection scope of the present invention.
Claims (10)
1. a kind of flexible feed device of bending machine, including the hold assembly (1) of bend pipe is treated for clamping, for driving clamping part
The traversing part (3) that part (1) edge is moved perpendicular to pipe fitting feed direction, and for driving traversing part (3) along feed direction
Mobile feeding part (2), it is characterised in that：Described traversing part (3) includes traversing vehicle frame (310) and flexible drive mechanism
(340), traversing vehicle frame (310) is arranged on feeding part (2) by traversing line slideway auxiliary (320), and traversing vehicle frame (310) is even
Connect hold assembly (1)；The flexible drive mechanism (340) includes nut seat (341), captive nut (342) and traversing leading screw
(343), nut seat (341) is arranged on feeding part (2), and captive nut (342) is arranged on the interior of nut seat (341) by key
Kong Zhong, captive nut (342) both sides respectively set a floating guide pin bushing (344), and floating guide pin bushing (344) is compressed by spring (345)
Captive nut (342) both ends；The traversing leading screw (343) is arranged on traversing vehicle frame (310), and it is passed with captive nut (342)
Dynamic connection, and driven by the traversing motor (330) on traversing vehicle frame (310).
A kind of 2. flexible feed device of bending machine according to claim 1, it is characterised in that：The nut seat (341)
Endoporus be the big shoulder hole in middle small both ends, form step surface, endoporus both ends installation end cap (346) in big aperture intersection；
The floating guide pin bushing (344) is located in the large hole at both ends, and spacing by step surface, and spring (345) is limited in end cap (346)
Between floating guide pin bushing (344).
A kind of 3. flexible feed device of bending machine according to claim 1 or 2, it is characterised in that：The traversing straight line
Guideway (320) includes the traversing guide rail (321) and traversing sliding block (322) to cooperate, and traversing sliding block (322) is arranged on feeding
On part (2), traversing guide rail (321) is arranged on traversing vehicle frame (310).
A kind of 4. flexible feed device of bending machine according to claim 1 or 2, it is characterised in that：The feeding part
(2) feeding vehicle frame (210) and feeding motor (220) are included, feeding vehicle frame (210) is arranged on bending machine work by line slideway auxiliary
Make the side of platform, feeding motor (220) is arranged on feeding vehicle frame (210), and is connected with feeding gear by feed spool (250)
(230), feeding gear (230) is connected with being arranged at the rack-driving of workbench side.
A kind of 5. bending machine, it is characterised in that：Including the flexible feed device described in claim 1, and for bend pipe will to be treated
It is sent into the charging pusher of flexible feed device；It is described charging pusher include cage, roller rotary driving part (8),
Roller driven in translation part (9) and roller clamping part (10)；The roller clamping part (10) includes sliding by a pair roller
Seat (1010) is arranged at the pair roller (1020) above cage；The roller rotary driving part (8) is used to drive a pair of rollings
Take turns (1020) synchronous axial system；The roller driven in translation part (9) is used to drive a pair roller slide (1010) mutually close or remote
From, make a pair roller (1020) clamp or unclamp treat bend pipe.
A kind of 6. bending machine according to claim 5, it is characterised in that：The roller rotary driving part (8) includes rotation
Rotatory force component (810) and two groups of Hooks coupling universal couplings (820), every group of at least two Hooks coupling universal couplings (820), rotary power group
Part (810) drives a roller (1020) respectively by two groups of Hooks coupling universal couplings (820).
A kind of 7. bending machine according to claim 6, it is characterised in that：Every group of Hooks coupling universal coupling (820) adjacent two
It is individual to connect a transition axis (830) respectively, one end of two transition axises (830) by key respectively with transition adjusting set (840)
Both ends connection.
A kind of 8. bending machine according to claim 5 or 6, it is characterised in that：The roller driven in translation part (9) includes
Translate Power Component (920), splined shaft (940) and fork B (950)；The both ends of the splined shaft (940) are fixed in cage
In shaft seat (930)；One end connection splined shaft (940) of the fork B (950), the other end are connected with slide block B (960), sliding block
B (960) is arranged in the guide hole of roller slide (1010)；Translation Power Component (920) the driving splined shaft (940) rotates.
A kind of 9. bending machine according to claim 5 or 6, it is characterised in that：The translation Power Component (920) includes folder
Tight cylinder (921), synchronization steering block (922) and fork A (924)；The clamping cylinder (921) is arranged in cage, and it is connected
Synchronization steering block (922), the both sides of synchronization steering block (922) open up two symmetrical guide grooves, a cunning are provided with each guide groove
Block A (923)；One end connection sliding block A (923) of the fork A (924), other end connection splined shaft (940).
A kind of 10. bending machine according to claim 5 or 6, it is characterised in that：Have on the outer peripheral face of the roller (1020)
There is deep-slotted chip breaker, and open up a plurality of groove (1021) vertically thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711030761.1A CN107716758B (en) | 2017-10-30 | 2017-10-30 | Flexible feeding device of pipe bending machine and pipe bending machine thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711030761.1A CN107716758B (en) | 2017-10-30 | 2017-10-30 | Flexible feeding device of pipe bending machine and pipe bending machine thereof |
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| Publication Number | Publication Date |
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| CN107716758B CN107716758B (en) | 2023-08-01 |
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| CN109772964A (en) * | 2018-11-28 | 2019-05-21 | 安徽德系重工科技有限公司 | A kind of swan neck system and its application method |
| CN112570593A (en) * | 2020-11-24 | 2021-03-30 | 厦门和美赋能科技有限公司 | Small-sized 3D (three-dimensional) line folding machine and control method thereof |
| CN113857334A (en) * | 2021-09-30 | 2021-12-31 | 徐州祥模工程技术有限公司 | Punching equipment for machining steel structure products |
| CN113857334B (en) * | 2021-09-30 | 2024-05-31 | 徐州东大钢结构建筑有限公司 | Punching equipment for machining steel structure products |
| CN113751559A (en) * | 2021-10-13 | 2021-12-07 | 广东科欣电气有限公司 | Hydraulic pipe bending machine |
| CN113751559B (en) * | 2021-10-13 | 2023-06-06 | 广东科欣电气有限公司 | Hydraulic pipe bending machine |
| CN115267032A (en) * | 2022-08-02 | 2022-11-01 | 青岛盛瀚色谱技术有限公司 | Automatic sample introduction device |
| CN115267032B (en) * | 2022-08-02 | 2024-06-04 | 青岛盛瀚色谱技术有限公司 | Automatic sample injection device |
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