CN107350316A - Utilize the portable tube bending machine of hydraulic pressure - Google Patents
Utilize the portable tube bending machine of hydraulic pressure Download PDFInfo
- Publication number
- CN107350316A CN107350316A CN201710308378.1A CN201710308378A CN107350316A CN 107350316 A CN107350316 A CN 107350316A CN 201710308378 A CN201710308378 A CN 201710308378A CN 107350316 A CN107350316 A CN 107350316A
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- shell
- bending
- drive
- hydraulic cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
- B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
-
- 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
- B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
-
- 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
- B21D7/04—Bending rods, profiles, or tubes over a movably-arranged forming menber
Abstract
The present invention is disclosed without using motor without individually power supply, can be in the live anywhere driving with hydraulic tests such as hydraulic pumps, so as to carry to scene and the excellent portable tube bending machine using hydraulic pressure of practical and mobility that is used as power tool.Therefore, the present invention's is included using the portable tube bending machine of hydraulic pressure：Hydraulic cylinder, by the hydraulic operation provided from the hydraulic drive unit of supply working oil；Forward-reverse guiding elements, it is connected with the piston rod of hydraulic cylinder and can advances or retreat movement, and equipped with rack on one side；Drive member, including be arranged at the drive gear on the top of drive shaft and be arranged at the bottom of drive shaft and the pinion engaged with rack；Driven member, it is included in the driven shaft of the upper shaft combination bending former of shell and is arranged at driven shaft and the driven gear engaged in the inside of shell with the drive gear of drive member；Control unit, for controlling the operation of hydraulic cylinder.
Description
Technical field
The portable tube bending machine of hydraulic pressure is the present invention relates to the use of, is related to without using motor without individually electricity supply
(power supply), and can be anywhere driven in live with hydraulic tests such as hydraulic pumps, so as to carry to
Scene and the excellent portable tube bending machine using hydraulic pressure of practical and mobility that is used as power tool.
Background technology
Generally, swan neck system according to the installation of mandrel (Mandrel) whether and be divided into mandrel bending apparatus and spindle-less is curved
Bent device, mandrel bending apparatus because of the installation of mandrel and the volume of single unit system is big, so as to it is mobile inconvenient the shortcomings that, with this
On the contrary, centreless shaft bending apparatus because simple in construction the small volume of device, so as to it is mobile easy the advantages of.
In addition, conventional swan neck system swing roller typically in the state of support tube, and bent with predetermined angle
(bending) operation.Now, the power of swing roller mainly utilizes motor or hydraulic pressure.
But conventional motor drive mode needs to supply external power source, therefore have a problem that can not be can not be for
To being used in the scene of power supply, conventional hydraulic driving mode has a problem that equipped with hydraulic pump or hydraulic oil container
Device is for large-scale and fixed setting type or for controlling the complicated of angle of bend.
Prior art literature
Patent document
(patent document 1) KR published patent the 2007-0042945th
The content of the invention
The present invention proposes to solve the above problems in the lump, it is an object of the invention to provide one kind without using electricity
Machine can anywhere enter without individually electricity supply (power supply) in live with hydraulic tests such as hydraulic pumps
Row driving, so as to carry to the excellent profit of practical and mobility live and used as power tool
With the portable tube bending machine of hydraulic pressure.
In order to achieve the above object, it is to make to be arranged at the upper of shell according to the portable tube bending machine using hydraulic pressure of the present invention
The bending former of side rotates and the bending machine of bending pipe fitting, the bending machine include：Hydraulic cylinder, the hydraulic cylinder are arranged at described
The one side of shell, and operated by the hydraulic pressure of the hydraulic drive unit offer from supply working oil；Forward-reverse draws
Lead component, the forward-reverse guiding elements be connected in the inside of the shell with the piston rod of the hydraulic cylinder and can advance or
Person, which retreats, to move, equipped with rack on the one side of the forward-reverse guiding elements；Drive member, the drive member include driving
Moving axis, be arranged at the drive shaft top drive gear and be arranged at the bottom of the drive shaft and nibbled with the rack
The forward-reverse motion transform of the forward-reverse guiding elements is rotary motion by the pinion of conjunction, the drive member；From
Dynamic component, the driven member includes the upside extension to the shell and axle is combined with the driven shaft of the bending former,
With the driven tooth for being arranged at the driven shaft and being engaged in the inside of the shell with the drive gear of the drive member
Wheel, the driven member obtain revolving force from the drive member and rotate the bending former；Control unit, the control
Portion is used for the advance movement for controlling the piston rod of the hydraulic cylinder.
As an embodiment of the invention, the side of the shell can be respectively arranged with and the hydraulic-driven list
The first-class discrepancy port and second discrepancy port that member connects and flows in or out working oil, the first-class discrepancy port
It is connected by the first work stream with the first port of the hydraulic cylinder, the second discrepancy port passes through the second work stream
It is connected with the second port of the hydraulic cylinder.
As the preferred embodiment of the present invention, the forward-reverse guiding elements can also include：Support chip, the support
Piece protrudes extension from the both ends of the another side of the forward-reverse guiding elements；First screw rod, the both ends of first screw rod
Portion is incorporated on the support chip and on outer peripheral face formed with screw thread；Nut member, the nut member are connected to described first
It can be moved on screw rod and formed with screw thread on inner peripheral surface on first screw rod.
In addition, the nut member includes being formed at the first gear portion of outer peripheral face, is formed at the first gear portion
The jut of the contact site of side and the prominent opposite side for being formed at the first gear portion.
In addition, as a preferred embodiment of the present invention, can be with first screw rod in the inside of the shell
Abreast it is provided with splined shaft, the splined shaft upper spline is combined with hub, formed with described first on the outer peripheral face of the hub
The concave part that the second gear portion of gear part engagement and the end of the jut are inserted into.
In addition, as another preferred embodiment of the present invention, angle of bend is provided with the another side of the shell
Setting handle, the angle of bend setting handle are connected with the one end of the splined shaft for rotating the splined shaft,
Instrument is provided with the another side of the shell simultaneously, the instrument is combined to show basis with the angle of bend setting with handle
The numerical value of the number of revolutions change of the angle of bend setting handle, when the rotation angle of bend setting handle in the instrument
When numerical value corresponding with default pipe fitting angle of bend is shown on table, the hub rotates and moved on the splined shaft, described
Nut member also rotates because of the hub and moved on first screw rod.
As a preferred embodiment of the present invention, the control unit includes being arranged at the lower section of first screw rod
Limit switch and be arranged at the limit switch lower section by-passing valve.
In addition, the by-passing valve includes the first force feed hole, the second force feed hole, spring and pin component, first force feed
The first bypass flow path connection of first work stream difference described in Kong Yucong, the second workflow described in the second force feed Kong Yucong
The second bypass flow path connection of road difference, the spring are arranged in the first force feed hole, the one end shape of the pin component
Into the flexible ball for being supported in the spring hole, the pin structure are pressed oil to connect or block described first to press oil hole and described second
The other end of part is prominent to the inside of the shell and is arranged in the lower section of the limit switch, when the forward-reverse guides
Component, which advances, to be moved, when the contact site of the nut member contacts with the limit switch and presses the limit switch,
The pin component declines and compresses the spring, and the ball makes the first force feed hole be connected with the described second force feed hole so that
To the described first work stream and the working oil of the second work flow path to first bypass flow path and described second
Bypass flow path is flowed, and the advance movement of the piston rod of the hydraulic cylinder is terminated so that the rotation quilt of the bending former
Terminate.
In addition, as an embodiment of the invention, check-valves can be provided with second bypass flow path, with energy
Enough prevent the second bypass flow path described in working oil from the second workflow road direction from flowing.
In addition, as another embodiment of the invention, the limit switch can be equipped with the revolving part of circle, should
Revolving part the limit switch end pins combine and it is rotatable, the contact site of the nut member has conical by its shape, from
And the contact site can successfully be contacted with the revolving part of the limit switch and press limit switch.
According to the present invention, due to without using motor without individually electricity supply (power supply), and can be with liquid
The live of the hydraulic tests such as press pump is anywhere driven, and is carried out so as to carry to scene as power tool
Use, therefore practical and mobility are very excellent.
In addition, the present invention is just able to carry out the pipe fitting buckling work of multiple angles with compact structure and shirtsleeve operation.
Brief description of the drawings
Fig. 1 is the figure for showing the portable tube bending machine using hydraulic pressure according to an embodiment of the invention；
Fig. 2 is to decompose the shell of the present invention and show the figure of an embodiment of the invention；
Fig. 3 is the figure for the internal structure for showing the shell according to an embodiment of the invention；
The operative relationship of internal structure when Fig. 4 is the angle of bend setting handle for illustrating the user rotation present invention
Figure；
Fig. 5 is the figure for the set location for showing the limit switch of the present invention；
Fig. 6 is the sectional view for the internal structure for showing the shell according to an embodiment of the invention；
Fig. 7 a are angle of bend setting handle, instrument, splined shaft, hub, the first screw rod and the nut structure for illustrating the present invention
The sectional view of the marriage relation of part；
Fig. 7 b are to illustrate cuing open for the state that the hub of the present invention and nut member move on splined shaft and the first screw rod respectively
View；
Fig. 8 a are the sectional views for illustrating the control unit of the present invention；
Fig. 8 b are the sectional views for showing the state that the contact site of the nut member of the present invention and limit switch are in contact；
The figure of hydraulic circuit when Fig. 9 a are the piston rod advances for showing the hydraulic cylinder of the present invention；
Fig. 9 b are the figures for showing hydraulic circuit when pipe fitting is bent with predetermined angle；
The figure of hydraulic circuit when Fig. 9 c are the piston rod retrogressings for showing the hydraulic cylinder of the present invention；
Figure 10 a are to show pipe fitting in bending front support in bending former and the pipe fitting branch stake tool of the present invention and by cloth
The figure for the state put；
Figure 10 b are to show pipe fitting with the figure of the state of default bending angular distortion.
Description of reference numerals
100：Shell 100A：Upper case 100B：Lower case
101：First-class discrepancy port 102：Second discrepancy port
110：Bending former 111：First recess 112：Guide plate
120：Handle 130 is used in angle of bend setting：Instrument
200：Hydraulic cylinder 200A：Piston rod 201：First port 202：Second port
203：First work stream 204：Second work stream
205：First bypass flow path 206：Second bypass flow path
300：Forward-reverse guiding elements 301,301'：Support chip
310：Rack 320：First screw rod 330：Nut member
331：First gear portion 332：Contact site 333：Jut
400：Drive member 410：Drive shaft 420：Drive gear 430：Pinion
500：Driven member 510：Driven shaft 520：Driven gear
600：Control unit 610：Limit switch 610A：Revolving part
620：By-passing valve 621：First force feed hole 622：Second force feed hole 623：Spring
624：Pin component 624A：Ball 630：Check-valves
700：Splined shaft 710：Hub 711：Second gear portion 712：Concave part
800：Direction switching valve 800A：First conversion position 800B：Second conversion position
810：Button portion 900：Pipe fitting branch stake tool
910：Transfer groove portion 920：Second screw rod 930：Pipe fitting support handle
940：Transferring members 941：Support shaft
950：Revolving member 960：Stator 961：Second recess
P：Hydraulic drive unit P1：Hydraulic pump P2：Hydraulic oil container
L1：First hydraulic line L2：Second hydraulic line
Embodiment
The present invention relates to can carry using hydraulic pressure and as power tool anywhere entering to operation field
The bending machine of the structure of enforcement, can be with mandrel according to the technological thought of the portable tube bending machine using hydraulic pressure of the present invention
Whether install and independently applied, but be more preferably applied to spindle-less bending machine.
Hereinafter, referring to the drawings, it will be explained in the preferred embodiment of the present invention.
Fig. 1 is the figure for showing the portable tube bending machine using hydraulic pressure according to an embodiment of the invention, and Fig. 2 is point
Solve the shell of the present invention and the figure of an embodiment of the invention is shown.
As depicted in figs. 1 and 2, shell 100 of the invention provides following space, i.e. is disposed with upside for bending
The bending former 110 and pipe fitting branch stake tool 900 of pipe fitting, and be internally disposed with for rotating the bending former
110 instrument and the instrument for setting and adjusting pipe fitting bending (bending) angle.In addition, as an embodiment, sheet
The shell 100 of invention can be made up of the fastening means combination upper case 100A and lower case 100B such as bolt, such as Fig. 2
It is shown, it can be provided with bending former 110 and pipe fitting branch stake tool on upper case 100A, can be with lower case 100B
It is provided with the instrument for rotating the bending former 110 and the instrument for setting and adjusting pipe fitting angle of bend.
The present invention is that the bending former 110 for making to be arranged at the upside of the shell 100 rotates and makes what pipe fitting was bent
Bending machine, the bending former 110 are collecting or support tubes and by throw rotate and bending pipe fitting
Pipe fitting bending rotating member.
Preferably, in the bending former 110, there is hollow bulb in central part, with can axle be incorporated into will be rear
The upper side for the driven shaft 510 stated, and the inner circumferential shape of the hollow bulb is relative with the peripheral shape of the driven shaft 510
Should, can effectively transmit the revolving force of driven shaft 510.The axle of driven shaft 510 and bending former 110 described later combines
Known technology can be used.
In addition, the first recess 111 formed with the side for housing pipe fitting on the outer peripheral face of the bending former 110,
And arrange that the guide plate 112 of the opposite side of pipe fitting is integrally disposed upon the side of bending former 110, so as to pass through described the
When one recess 111 comes the side of support tubes and is bent by the rotation of bending former 110, the profile of pipe fitting will not become
Shape is damaged and can successfully bent.
In addition, the guide plate 112 is along the power of pipe fitting bending direction bending pipe fitting when making the rotation of bending former 110
The component that can be applied on pipe fitting, it is preferable that guide plate 112 sets with bending former 110 and is integrated, and relative to curved
The circumference of bent forming tool 110 tangentially sets and houses the opposite side of pipe fitting, can be revolved in bending former 110
Rotated together with when turning, and the power along bending direction bending is applied on pipe fitting.
The present invention is using hydraulic cylinder 200 as the driving instrument or power source for rotating the bending former 110.
As depicted in figs. 1 and 2, the cylinder body (body) of hydraulic cylinder 200 can be arranged on outside described the hydraulic cylinder 200 of the present invention
The one side of shell 100, as another embodiment, the inside of shell 100 can also be arranged on.
The hydraulic cylinder 200 of the present invention is by from being used as what the hydraulic drive unit P that single equipment is externally arranged was provided
Hydraulic pressure is operated, and the hydraulic drive unit P for being used in the present invention is integratedly equipped with the known liquid of following structure
Press equipment, the structure include be used for the unit feeding working oil for needing hydraulic pressure or make working oil circulate and the liquid of hydraulic pressure is provided
Press pump P1, hydraulic oil container P2, as conversion work oil flow direction valve direction switching valve 800 and for controlling
Button portion 810 of the direction switching valve 800 etc..For the sheet using the direction switching valve 800 and the operation of button portion 810
The hydraulic loop structure of the portable tube bending machine of invention, will be aftermentioned.
Therefore, according to the present invention portable tube bending machine can by arranged or be individually arranged in be used as it is described known
The first hydraulic line L1 and the second hydraulic line L2 connections on the hydraulic drive unit P of existing equipment, so as to receive hydraulic pressure to perform
Pipe fitting buckling work, or can be separated with the first hydraulic line L1 and the second hydraulic line L2, so as to only by the curved of the present invention
Pipe machine is carried as power tool.
That is, the first hydraulic line L1 and the second hydraulic line L2 are detachably incorporated in and are arranged at shell
The first-class discrepancy port 101 of 100 side and second come in and go out on port 102, so as to pass through first-class discrepancy port
101 and second come in and go out port 102 make working oil flow into the present invention bending machine or from the present invention bending machine discharge work
Oil.
In addition, the hydraulic cylinder 200 is by being respectively arranged at the side of cylinder body and the first port 201 and second of opposite side
Port 202 makes working oil flow into or discharge.
In the present invention, the piston rod 200A of the hydraulic cylinder 200 is arranged in inside shell 100, the piston rod 200A
It is connected in the inside of shell 100 with forward-reverse guiding elements 300.
As shown in figure 3, the forward-reverse guiding elements 300 of the present invention is the piston rod 200A in the inside of shell 100
Advance or together advanced when retreating or retreat mobile component, not only carried on the one side of forward-reverse guiding elements 300
Space for being equipped with rack 310, and when the forward-reverse of rack 310 rotates pinion 430 described later, after advance
Move back guiding elements 300 and reliably support the rack 310, so as to maintain the engagement of the rack 310 and pinion 430,
Drive member 400 is successfully transferred to so that forward-reverse can be moved.
As for the structural element that this forward-reverse motion transform is rotary motion, the present invention to be included into drive member
400 and driven member 500, drive member 400 is guided equipped with being provided in the forward-reverse with certain area or certain limit
Rack 310 on the one side of component 300 and the pinion 430 engaged with the rack 310, driven member 500 and the drive
Dynamic component 400 engages and rotates the bending former 110.
The drive member 400 of the present invention includes：Drive shaft 410, the drive shaft 410 is relative to the piston rod 200A or preceding
The rack 310 for entering to retreat guiding elements 300 is vertically arranged；Drive gear 420, the drive gear 420 are arranged at the driving
Top on axle 410；Pinion 430, the pinion 430 be arranged at the bottom in the drive shaft 410 and with the rack 310
Engagement, preferably, the drive gear 420 can be made up of spur gear.
Therefore, in the present invention, the rack 310 of the forward-reverse guiding elements 300 and the drive member 400 are provided to
Pinion 430 engage or coordinate so that piston rod 200A forward-reverse motion transform is rotary motion.
The driven member 500 of the present invention includes driven shaft 510 and is arranged at the driven gear 520 of the driven shaft 510, institute
State driven shaft 510 and be arranged to parallel with the drive shaft 410 and along the upper of the shell 100 (more specifically upper case 100A)
Side extend, so as to shell 100 upper shaft with reference to the bending former 110.The bending former 110 and driven
The axle of axle 520 a variety of skills with reference to known to can apply and the bending former 110 can be made to rotate by driven shaft 520
Art.
In addition, the driving in the inside of the shell 100 and the drive member 400 is provided with the driven shaft 510
The driven gear 520 that gear 420 engages.Preferably, the driven gear 520 can be by can be with the driving
The spur gear that gear 420 engages is formed.
Therefore, the driven member 500 obtains revolving force from the drive member 400 and makes the bending former
110 rotations.
Hereinafter, the internal structure of the bending machine according to the present invention will be described in more detail to Fig. 5 figure in reference picture 3.
Fig. 3 is the figure for showing to be arranged at the internal structure key element of the lower case 100B bending machine according to the present invention；Fig. 4
The figure of the operative relationship of internal structure key element when being for illustrating user's rotoflector angle setting handle 120；Fig. 5 is to show
Go out the figure of the arrangement relation of the first screw rod 320 of explanation and limit switch 610.
As the preferred embodiment of the present invention, the forward-reverse guiding elements 300 includes：Support chip 301,301',
The support chip 301,301' are arranged to protrude extension from the both ends of the another side of the forward-reverse guiding elements 300；
First screw rod 320, the both ends of first screw rod 320 are incorporated into the support chip 301, on 301'；Nut member 330, the spiral shell
Female component 330 is connected on first screw rod 320 and on inner peripheral surface formed with screw thread, with can be in first screw rod
Moved on 320.
The support chip 301,301' are preferably thin strip, and from the opposite side of the forward-reverse guiding elements 300
The upper and lower end in face is protruded with certain length respectively to be extended, and first screw rod 320 is on outer peripheral face formed with screw thread
And both ends are incorporated into the support chip 301, on 301' respectively, so as to be fixedly installed on institute by the support chip 301,301'
State on forward-reverse guiding elements 300, therefore after together advancing when the forward-reverse of forward-reverse guiding elements 300 moves
Retire dynamic.
The spiral shell for being threadedly connected to first screw rod 320 and can rotating and move on first screw rod 320
Female component 330 includes：It is formed at the first gear portion 331 of outer peripheral face, is formed at the side (support in the first gear portion 331
The direction side of piece 301 or the direction side of limit switch 610) contact site 332 and protrusion be formed at the another of the first gear portion 331
The jut 333 of side (support chip 301' directions side).
The first gear portion 331 is the component engaged with by the second gear portion 711 of hub 710 described later, preferably by straight
Gear is formed, and the contact site 332 is contacted with the position of limit switch 610 described later, as shown in Fig. 6 to Fig. 8 b, contact
Portion 332 is preferably to have conical by its shape, is connect so as to the circular rotating member 610A successfully with limit switch 610 described later
Touch；The jut 333 is to insert and hang over the position in the concave part 712 of hub 710 described later, and jut 333 is preferably formed as
It is higher prominent for the gear teeth (gear tooth) than the first gear portion 331.
In addition, as the preferred embodiment of the present invention, as shown in figs. 7 a and 7b, in the shell 100 (or outside bottom
Shell 100B) inside and first screw rod 320 it is abreast (or flat with piston rod 200A or forward-reverse guiding elements 300
Row ground) splined shaft 700 is provided with, the upper spline of splined shaft 700 is combined with hub 710.That is, the outer peripheral face of described splined shaft 700
On axially formed with spline projection, formed with spline, the spline projection and spline on the inner peripheral surface of the hub 710
It is engaged so that splined shaft 700 and the hub 710 spline combines, so as to which the hub 710 can be along the splined shaft
700 move on the splined shaft 700.
In addition, engaged on the outer peripheral face of the hub 710 formed with the first gear portion 331 with the nut member 330
Second gear portion 711 and the concave part 712 of the end of the jut 333 insertion.
The second gear portion 711 in order to engaged with the first gear portion 331 and it is preferred that being made up of spur gear, institute
State nut member 330 and hub 710 is engaged by first gear portion 331 and second gear portion 711, when being rotated so as to the hub 710,
The nut member 330 is also rotated, and the end of the jut 333 is inserted in the concave part 712, so as to the nut structure
Part 330 rotates and when being moved on first screw rod 320, hub 710 also together moves on splined shaft 700.
In addition, as the preferred embodiment of the present invention, the another side of the shell 100 (or lower case 100B)
On can be provided with the angle of bend setting hand for being connected with the one end of the splined shaft 700 and rotating the splined shaft 700
(the He of reference picture 4 of instrument 130 for the numerical value that handle 120 and display are changed according to the angle of bend setting with the number of revolutions of handle 120
Fig. 5).
Rotated when the angle of bend setting is with the default pipe fitting angle of bend that handle 120 is needed for user sets
The component of operation, the one end of splined shaft 700 of the angle of bend setting handle 120 with being arranged in the shell 100 be connected and
Rotate splined shaft 700, so that the hub 710 that spline is incorporated into splined shaft 700 rotates.
The instrument 130 is the component for display, can when handle 120 is used in user's rotation angle of bend setting
Confirming numerical value corresponding with default pipe fitting angle of bend from outside, the instrument 130 has features designed to following known features,
That is, instrument 130 is combined in the another side of the shell 100 with the angle of bend setting handle 120, and in instrument 130
The numerical value of display changes with the number of revolutions of the angle of bend setting handle 120.
Consider the first gear portion 331 and second gear portion 711 according to being preset with the bending machine of the present invention
The contact site 332 of number of gear teeth ratio (or gear ratio or speed reducing ratio), the end of limit switch 610 and nut member 330 it
Between distance R, the number of gear teeth ratio and the gear of drive gear 420 and driven gear 520 of rack 310 and pinion 430
Number of teeth ratio etc., and numerical value corresponding with specific pipe fitting angle of bend, wherein, the end of the limit switch 610 and nut structure
Shiftings on first screw rod 320 of the distance between the contact site 332 of part 330 R according to the number of revolutions according to nut member 330
Dynamic distance.
Therefore, when user confirms instrument 130 and rotates the angle of bend setting handle 120, until in instrument 130
When showing numerical value corresponding with specific (or default) pipe fitting angle of bend, the hub 710 rotates and on the splined shaft 700
Mobile, the nut member 330 rotates also by the hub 700 and moved on first screw rod 320, so as to be arranged in
The ad-hoc location of first screw rod 320.That is, the end of limit switch 610 corresponding with default pipe fitting angle of bend and
The distance between the contact site 332 of nut member 330 R is set.End and nut member 330 for limit switch 610
The distance between contact site 332 R, will be aftermentioned.
In the present invention, bending former 110 is terminated in order to terminate the piston rod 200A of hydraulic cylinder 200 advance movement
Rotation, make use of the nut member 330 and control unit 600, as the preferred embodiment of the present invention, the control unit
600 include：It is arranged at the inside of the shell 100 (or lower case 100B) and is arranged under first screw rod 320
The limit switch 610 (reference picture 5) in portion and the by-passing valve 620 (reference picture 8a and Fig. 8 b) for being arranged at the limit switch 610.
Fig. 8 a are for illustrating the combination according to the nut member 330 of the present invention, limit switch 610 and by-passing valve 620
The figure of relation, Fig. 8 b are for illustrating the operation according to the nut member 330 of the present invention, limit switch 610 and by-passing valve 620
The figure of relation.
As shown in Figure 8 a, applied to the present invention limit switch 610 be preferably press on-off mode limit switch (or
One end is by the switch of pin connection), so as to by the contact site 332 of the nut member 330 of contact, make bypass described later
The pin component 624 of valve 620 declines (or pressing), in addition, easily being contacted in order to the contact site 332 with nut member 330, such as
Shown in Fig. 8 a and Fig. 8 b, it is preferable that limit switch 610 has in end by the circular revolving part 610A of pin connection.
In addition, the limit switch 610 be arranged to from the bottom of the first screw rod 320 and the interval of nut member 330 it is default away from
From more specifically, the distance with the following size in nut member interval, i.e. the end of limit switch 610 and nut member 330
The distance between contact site 332 R.As described above, rotation process is carried out with handle 120 to angle of bend setting and makes nut member
330 move on the first screw rod 320, corresponding to specific pipe fitting angle of bend in of the invention so as to adjust the distance R
Distance R be preset.
Therefore, when user confirms instrument 130 and rotates the angle of bend setting handle 120, until in instrument 130
When showing numerical value corresponding with specific (or default) pipe fitting angle of bend, the contact site 332 of nut member 330 can be arranged in and
Specific pipe fitting angle of bend is accordingly on distance R position.
In addition, when the end of the limit switch 610 and the distance between contact site 332 R of nut member 330 long, institute
State the contact site 332 of nut member 330 and need together to advance with forward-reverse guiding elements 300 to move and more could be opened with spacing
Close 610 contacts, in contrast to this, distance R in short-term, the contact site 332 of the nut member 330 and forward-reverse guiding elements
300 together advance, and movement is less also to be contacted with limit switch 610, therefore pipe fitting angle of bend is bigger, and distance R is set to get over
It is long.
The by-passing valve 620 of the present invention includes：Hole 621 is pressed oil as making the first of working oil temporal persistence or the space passed through
With second force feed hole 622, be arranged in it is described first force feed hole 621 in spring 623 and one end on formed with ball 624A's
Pin component 624, the first force feed hole 621 connects with from the first bypass flow path 205 of the first work difference of stream 203, described
Second force feed hole 622 connects with from the second bypass flow path 206 of the second work difference of stream 204.
In the present invention, the first work stream 203 is the connection first-class discrepancy port 101 and hydraulic cylinder 200
First port 201 and make from the hydraulic drive unit P provide working oil flowing stream, it is described second work stream
204 be to connect the second port 202 of the second discrepancy port 102 and hydraulic cylinder 200 and make from the hydraulic drive unit P
The stream of the working oil flowing of offer.
In addition, the pin component 624 is to penetrate the component that the first force feed hole 621 and second presses oil hole 622, pin component 624
One end (or bottom) on formed with flexibly supporting in the ball 624A of the spring 623, with open or close described first
The outlet side in hole 621 is pressed oil, so that the first force feed hole 621 connects or blocked with the second force feed hole 622, pin component 624
The other end towards the shell 100 (or lower case 100B) inside protrude, so as to be arranged in the limit switch 610
Lower section (be preferably immediately below).
Therefore, as shown in Figure 8 b, when limit switch 610 is pressed downwardly by the contact site 332 of nut member 330, institute
State pin component 624 and be also pressed downwardly (or declining movement downwards), so as to open first while ball 624A compression spring 623
Press oil the outlet side in hole 621 so that the first force feed hole 621 connects with the second force feed hole 622.The contact site 332 of nut member 330
Separating and contacted when being released from limit switch 610, the pin component 624 is also back to reset condition by spring 623, and again
The outlet side in the force feed of closing first hole 621.Formed for the hydraulic circuit of the by-passing valve 620, will be aftermentioned.
In addition, in the present invention, by above-mentioned known hydraulic drive unit P come the flow direction of conversion work oil, and control
The piston rod 200A of hydraulic cylinder 200 processed advances or retreated, as described above, as known to hydraulic drive unit P structure one
Individual example, the flow direction for including on the hydraulic drive unit P being used for changing the working oil being supplied to (or the work being supplied to
Make the inflow stream of oil) direction switching valve 800 and control the button portion 810 of the direction switching valve 800.
The hydraulic circuit illustrated in reference picture 9a to Fig. 9 c, it will be explained in the piston rod of the hydraulic cylinder 300 of the present invention
The operative relationship of 200A advance or back operation relation and the by-passing valve 620 on default pipe fitting angle of bend.
Fig. 9 a be show hydraulic cylinder 200 piston rod 200A advance when hydraulic circuit figure, Fig. 9 b be show pipe fitting with
The figure of hydraulic circuit during default angle bending, hydraulic pressure when Fig. 9 c are the piston rod 200A advances for showing hydraulic cylinder 200 return
The figure on road.
As shown in Fig. 9 a to Fig. 9 c, as an embodiment, it is included in the structure of the known hydraulic drive unit P
In direction switching valve 800 can be respectively connecting to be arranged at the present invention by the first hydraulic line L1 and the second hydraulic line L2
Shell 100 the first-class discrepancy port 101 and second come in and go out port 102.
In addition, as an embodiment, the direction switching valve 800 and pressing equipped with button (push button)
Key portion 810 electrically connects, so that user can change the piston rod 200A of hydraulic cylinder 200 forward-reverse direction, and direction
Switching valve 800 can be made up of 4 mouthfuls of 2 magnetic valves, can select one in the first hydraulic line L1 and the second hydraulic line L2
Ground supplies working oil.
In addition, the direction switching valve 800 can have the first conversion position 800A and the second conversion position 800B.First
Conversion position 800A supplies working oil to the first hydraulic line L1 and working oil is flowed to the described first work stream 203, so as to
The piston rod 200A is set to advance.Second conversion position B supplies working oil to the second hydraulic line L2 and makes working oil to described the
Two work streams 204 flow, so that the piston rod 200A is retreated.
For example, if being described in more detail, Fig. 9 a are a buttons (the piston rod forwarding buttons in user's pressing keys portion 810
Or bending operation button) and make the situation of the advance of forward-reverse guiding elements 300, when pressing a buttons of the button portion 810,
The direction switching valve 800 forms the first conversion position 800A hydraulic circuit, and by the first hydraulic line L1 to the present invention's
First-class discrepancy port 101 supplies working oil, flows into the working oil of the first-class discrepancy port 101 by the first work stream
203 flow into the first port 201 of hydraulic cylinder 200.When flowing into the working oil promotion piston rod 200A of the first port 201,
Working oil flows out from second port 202, while forward-reverse guiding elements 300 advances, the working oil flowed out from second port 202
By the second work stream 204, and by second come in and go out port 102 be expelled to the present invention bending machine outside, and again
Flowed into hydraulic drive unit P.
Now, sealed because the by-passing valve 620 of the present invention is in the first force feed hole 621 by the ball 624A of pin component 624
The state closed, i.e. the contact site 332 in nut member 330 is not in contact with the shape in limit switch 610 or revolving part 610A
State, therefore the flowing in the first force feed hole 621 is blocked, working oil is not to the first bypass from the first work difference of stream 203
Stream 205 flows.Therefore, the working oil supplied by first-class discrepancy port 101 passes through the first work stream 203 to hydraulic cylinder
200 first port 201 flows into, and the working oil flowed out from the second port 202 of hydraulic cylinder 200 passes through the second work stream 204,
And discharged by second discrepancy port 102.
If user continues a buttons in pressing keys portion 810, by according to the first of direction switching valve 800 the conversion
Position 800A hydraulic circuit, piston rod 200A will be moved on, as a result, bending former 110 also continues to rotate, so as to
Buckling work be may proceed to perform, it is therefore desirable to the rotation of bending former 110 is terminated on default pipe fitting angle of bend.
In order on default pipe fitting angle of bend in the present invention terminate bending former 110 rotation, using turn
It is changed to the structure of the hydraulic circuit illustrated in Fig. 9 b.
If Fig. 9 b are discussed in more detail, first, if user or operator confirm the numerical value of the instrument 130
(numerical value corresponding with specific curvature angle) and rotoflector angle setting handle 120 and set default pipe fitting angle of bend,
Then the contact site 332 of nut member 330 is arranged to be spaced pre-determined distance R with limit switch 610.Then, operator is in order to curved
Curved tube part and a buttons in pressing keys portion 810 and when rotating bending former 110, be arranged in forward-reverse guiding elements
The nut member 330 on 300 the first screw rod 320 also together advances movement with forward-reverse guiding elements 300, works as nut
Component 330 can contact with limit switch 610 when moving pre-determined distance R and press limit switch 610.
When pressing the limit switch 610, the pin component 624 declines, the ball 624A compressions in the force feed of closing first hole 621
The outlet side in the first force feed hole 621 is opened while spring 623, is connected so as to which the first force feed hole 621 and second is pressed oil into hole 622
It is logical.Now, the working oil flowed in the first bypass flow path 205 being blocked presses oil hole 622 by the first force feed hole 621 and second
Flowed to the second bypass flow path 206.
In this way, from the working oil that first-class discrepancy port 101 flows into the first bypass flow path 205 and the second bypass flow path
During 206 flowing, act on declined immediately by the hydraulic pressure on the first working oil for being flowed to hydraulic cylinder 200 of work stream 203 or
Reduce, so as to which no longer effect has the hydraulic pressure for making piston rod 200A advance mobile degree.Therefore, even if user (operator) continues
The a buttons in pressing keys portion 810, piston rod 200A are not readvanced, and the rotation of bending former 110 is also terminated.
As the present invention a preferable embodiment, in order that working oil not from described second work stream 204 to
Second bypass flow path 206 flows (or adverse current), and check-valves 630 is provided with second bypass flow path 206.
In order to terminate the rotation of bending former 110 and make the bending former rotated with default angle of bend
110 are back to reset condition, and the structure for the hydraulic circuit for being converted into being illustrated in Fig. 9 c is used in the present invention.
The hydraulic circuit illustrated in Fig. 9 c will be discussed in more detail.After default angle of bend bending pipe fitting, make
During b buttons (piston rod back or the return push-button) in user's pressing keys portion 810, the direction switching valve 800 forms the
Two conversion position 800B hydraulic circuit, working oil are supplied to the second discrepancy port of the present invention by the second hydraulic line L2
102, the working oil of the second discrepancy port 102 is flowed into by the second work second port of the stream 204 to hydraulic cylinder 200
202 flow into.When flowing into the working oil promotion piston rod 200A of the second port 202, working oil flows out from first port 201,
Forward-reverse guiding elements 300 retreats simultaneously, from the working oil that first port 201 flows out by the first work stream 203, and leads to
The outside that first-class discrepancy port 101 is expelled to the bending machine of the present invention is crossed, and is flowed into again to hydraulic drive unit P.
When the forward-reverse guiding elements 300 retreats, the nut member 330 that is contacted with the limit switch 610
Also retreat and separated with limit switch 610, the pin component 624 that limit switch 610 declines when returning also rises again, so as to ball
624A recloses the first force feed hole 621.Now, the first force feed hole 621 turns into the state that flowing is blocked again, by described
Check-valves 630, working oil do not flow from the second work stream 204 to the second bypass flow path 206, and working oil is only to above-mentioned second
The work work stream 203 of stream 204 and first flows.
Therefore, during the b buttons in pressing keys portion 810, bending former 110 rotates round about, so as to return
It is back to reset condition.
In order to by the present invention separate bending pipe fitting, it is necessary to by bending when fixed support tube part pipe fitting branch stake tool
900 are separated or are spaced from pipe fitting, and the pipe fitting branch stake tool 900 is the opposite side of support tubes, and by bending to
Component during the rotoflector pipe fitting of shape instrument 110 for fixed support tube part.
The pipe fitting branch stake tool 900 of the present invention is disposed on shell 100 (that more detailed is upper case 100A) and used
In the component of fixed support tube part, as as-shown-in figures 10 a and 10b, pipe fitting branch stake tool 900 includes：Transfer groove portion 910, the shifting
Groove portion 910 is sent to be formed at the top surface of the shell 100 with certain length and depth；Second screw rod 920, second screw rod 920 exist
Set and in outer peripheral face formed with screw thread towards the bending former 110 in the transfer groove portion 910；Pipe fitting support hand
Handle 930, the pipe fitting support handle 930 are connected with second screw rod 920 and rotate second screw rod 920；Transfer structure
Part 940, the transferring members 940 are threadedly coupled with second screw rod 920 and by the rotation of second screw rod 920 and can
Moved on second screw rod 920, the upside of the transferring members 940 has support shaft 941；Revolving member 950, the rotation
The axle of component 950 is incorporated in the support shaft 941 can be rotated horizontally on the transferring members 940；Stator 960, should
Stator 960 is incorporated into the revolving member 950 and formed with the second recess 961, while so as to accommodate the opposite side of pipe fitting,
Fixed support tube part.
Therefore, in the present invention, for fixed support tube part, first, pipe fitting is arranged in the of bending former 110
After one recess 111 and guide plate 112, secondly, the rotary tube piece support hand on the second recess 961 of the stator 960
Handle 930 is to accommodate the opposite side of pipe fitting, so that the transferring members 940 move towards bending former 110.Now, such as
Shown in Figure 10 a, pipe fitting can be fixedly supported to the upside of shell 100.
In the present invention, the transferring members 940 are threaded on the second screw rod 920, therefore when the stator 960
When second recess 961 accommodates the opposite side of pipe fitting, if the pipe fitting support reliably rotated with handle 930, pipe fitting
Support can be reliably fixed by bending former 110 and pipe fitting branch stake tool 900.
If illustrating the method for pipe fitting that pipe fitting buckling work draws bending afterwards, by pipe fitting fixed support as described above
Afterwards, a buttons (bending operation button) in pressing keys portion 810, after default angle of bend bending pipe fitting, by the pipe fitting branch
Support is rotated round about with handle 930, so as to mobile transferring members 940 away from bending former 110, rotates turn afterwards
Dynamic component 950 is to ensure the space for having the pipe fitting that can successfully extract bending, so that from bending former 110 successfully
Draw pipe fitting.
When the pipe fitting of bending is brought out, the b buttons in pressing keys portion 810, bending former 110 is returned to original
Beginning state, with the buckling work after can supporting.
Come in and gone out the first hydraulic line L1 and the of port 102 in addition, separation is connected to first-class discrepancy port 101 and second
During two hydraulic line L2, the portable tube bending machine of the present invention can be only carried, is entered so as to be moved to required operation field
Exercise and use.
In this specification, as an embodiment illustrate the hydraulic drive unit P structure include hydraulic pump P1,
Hydraulic oil container P2, direction switching valve 800 and button portion 810, but if the known hydraulic pressure used to implement the present invention
Driver element P is can alternatively to supply working oil and user's energy in the first hydraulic line L1 and the second hydraulic line L2
If the structure for enough controlling it, a variety of known hydraulic drive units can be used in the present invention.
It is explained above the preferred embodiment of the present invention, but the present invention can use a variety of changes and change and
Deng thing.It is clear that the embodiment can suitably be deformed and equally be applied.Therefore, the contents are not
Limit the scope of the present invention determined by the boundary of claims.
In addition, being illustrated in the detailed description of the present invention for specific embodiment, but it is self-evident that,
In the limit without departing from the scope of the present invention, the people with usual knowledge can carry out various deformation in this area.
Claims (2)
1. utilize the portable tube bending machine of hydraulic pressure, it is characterised in that the bending machine makes the bending for being arranged at the upside of shell (100)
Forming tool (110) rotates, and for bending pipe fitting, the bending machine includes：
Hydraulic cylinder (200), the hydraulic cylinder (200) are arranged at the one side of the shell (100), and by from supply working oil
The hydraulic operation that hydraulic drive unit (P) provides；
Forward-reverse guiding elements (300), the forward-reverse guiding elements (300) the inside of the shell (100) with it is described
Piston rod (200A) connection of hydraulic cylinder (200) and can advance or retreat movement, the forward-reverse guiding elements (300)
One side on equipped with rack (310)；
Drive member (400), the drive member (400) include：Drive shaft (410), the top for being arranged at the drive shaft (410)
Drive gear (420) and be arranged at the bottom of the drive shaft (410) and the pinion engaged with the rack (310)
(430), the drive member (400) transports the forward-reverse motion transform of the forward-reverse guiding elements (300) for rotation
It is dynamic；
Driven member (500), the driven member (500) include：It is combined with to the upside extension of the shell (100) and axle described
The driven shaft (510) of bending former (110), and be arranged on the driven shaft (510) and in the interior of the shell (100)
The driven gear (520) that portion is engaged with the drive gear (420) of the drive member (400), the driven member (500)
Revolving force is obtained from the drive member (400) and rotates the bending former (110)；
Control unit (600), the control unit (600) are used for the advance movement for terminating the piston rod (200A) of the hydraulic cylinder (200),
The side of the shell (100), which is respectively arranged with, to be connected with the hydraulic drive unit (P) and working oil is flowed into or is flowed
The first-class discrepancy port (101) gone out and second come in and go out port (102), and the first-class discrepancy port (101) passes through first
Work stream (203) is connected with the first port (201) of the hydraulic cylinder (200), and second discrepancy port (102) passes through
Second work stream (204) is connected with the second port (202) of the hydraulic cylinder (200),
The forward-reverse guiding elements (300) also includes：Support chip (301,301'), the support chip (301,301') is from described
The both ends of the another side of forward-reverse guiding elements (300) protrude extension；First screw rod (320), first screw rod (320)
Both ends be incorporated on the support chip (301,301') and on outer peripheral face formed with screw thread；Nut member (330), the spiral shell
Female component (330) is connected on first screw rod (320) and can be in first spiral shell formed with screw thread on inner peripheral surface
Bar moves on (320),
The nut member (330) includes：It is formed at the first gear portion (331) of outer peripheral face, is formed at the first gear portion
(331) jut of the contact site (332) of side and the prominent opposite side for being formed at the first gear portion (331)
(333),
The inside of the shell (100) is abreast provided with splined shaft (700), the splined shaft with first screw rod (320)
(700) upper spline is combined with hub (710), formed with being engaged with the first gear portion (331) on the outer peripheral face of the hub (710)
Second gear portion (711) and the jut (333) the concave part (712) that is inserted into of end,
Angle of bend setting handle (120) is provided with the another side of the shell (100), the angle of bend setting handle
(120) it is connected with the one end of the splined shaft (700) for rotating the splined shaft (700), while the shell
(100) instrument (130) is provided with another side, the setting of the instrument (130) and the angle of bend with handle (120) combine with
The numerical value that display is changed according to the angle of bend setting with the number of revolutions of handle (120), used when rotating the angle of bend setting
Handle (120) and in the instrument (130) show numerical value corresponding with default pipe fitting angle of bend when, the hub (710)
Rotate and moved on the splined shaft (700), the nut member (330) also rotates and described because of the hub (710)
First screw rod moves on (320),
The control unit (600) includes：The limit switch (610) of the lower section of first screw rod (320) is arranged at, and is arranged at
The by-passing valve (620) of the lower section of the limit switch (610),
The by-passing valve (620) includes：First force feed hole (621), the second force feed hole (622), spring (623) and pin component
(624), first force feed hole (621) from first bypass flow path (205) of described first work stream (203) difference with connecting
Logical, second force feed hole (622) connects with from second bypass flow path (206) of described second work stream (204) difference, institute
State spring (623) to be arranged in first force feed hole (621), the one end of the pin component (624) is formed with resilient support
In the ball (624A) of the spring (623) hole is pressed oil to connect or block described first to press oil hole (621) and described second
(622), the other end of the pin component (624) is prominent to the inside of the shell (100) and is arranged in the limit switch
(610) lower section, advance when the forward-reverse guiding elements (300) and move, the contact site of the nut member (330)
(332) when being contacted with the limit switch (610) and pressing the limit switch (610), the pin component (624) declines and pressed
Contract the spring (623), and the ball (624A) makes first force feed hole (621) be connected with the described second force feed hole (622), makes
Obtain to the working oil of the described first work stream (203) and the second work stream (204) flowing and bypass stream to described first
Road (205) and second bypass flow path (206) flowing, the advance movement quilt of the piston rod (200A) of the hydraulic cylinder (200)
Terminate so that the rotation of the bending former (110) is terminated.
2. the portable tube bending machine according to claim 1 using hydraulic pressure, it is characterised in that second bypass flow path
(206) check-valves (630) is provided with, so that working oil can be prevented from the described second work stream (204) to by described second
Through-flow road (206) flowing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2016-0056477 | 2016-05-09 | ||
| KR1020160056477A KR101642675B1 (en) | 2016-05-09 | 2016-05-09 | Portable pipe bending device using hydraulic pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107350316A true CN107350316A (en) | 2017-11-17 |
| CN107350316B CN107350316B (en) | 2018-11-30 |
Family
ID=56681027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710308378.1A Expired - Fee Related CN107350316B (en) | 2016-05-09 | 2017-05-04 | Utilize hydraulic portable tube bending machine |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101642675B1 (en) |
| CN (1) | CN107350316B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109013781A (en) * | 2018-08-09 | 2018-12-18 | 张建伟 | A kind of New Type Bending Pipe Unit |
| US10441984B1 (en) * | 2019-01-14 | 2019-10-15 | Todd Brochman | Conduit bender |
| CN111491748A (en) * | 2017-12-11 | 2020-08-04 | Cml国际有限公司 | Hydraulic operated rotary pipe bender |
| CN111608742A (en) * | 2019-02-25 | 2020-09-01 | 三菱重工压缩机有限公司 | Valve device and steam turbine |
| US10919080B1 (en) | 2019-12-27 | 2021-02-16 | Brochman Innovations, Llc | Tubing bender |
| USD926003S1 (en) | 2020-05-15 | 2021-07-27 | Brochman Innovations, Llc | Tubing bender |
| CN114247784A (en) * | 2021-12-22 | 2022-03-29 | 娄底福事特液压机械有限公司 | Pipe bending device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101895320B1 (en) * | 2016-11-29 | 2018-09-12 | (주)한맥기계 | pipe bending machine |
| CN111163874A (en) * | 2017-10-06 | 2020-05-15 | 米沃奇电动工具公司 | Gear-driven catheter bender |
| WO2023150273A1 (en) * | 2022-02-03 | 2023-08-10 | Milwaukee Electric Tool Corporation | Conduit bender |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01180740A (en) * | 1987-12-28 | 1989-07-18 | Ogura:Kk | Device for bending reinforcing bar |
| EP0757925A1 (en) * | 1995-08-09 | 1997-02-12 | Rigobert Dipl.-Ing. Schwarze | Method for controlling a pipe bending machine |
| CN1210043A (en) * | 1997-08-29 | 1999-03-10 | 利里建筑机械有限公司 | Universal machine for bending pipes or section bars to both fixed and variable curvatures |
| CN1814370A (en) * | 2005-02-04 | 2006-08-09 | Cml国际有限公司 | Bending machine with a controlled-return bending die |
| KR101397974B1 (en) * | 2013-01-03 | 2014-05-27 | 김명호 | Bending device of wire products forming machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5819574A (en) * | 1996-06-07 | 1998-10-13 | Kabushiki Kaisha Opton | Hydraulic device for bending work and a bending device with the hydraulic device mounted thereon |
| KR20070042945A (en) | 2007-03-30 | 2007-04-24 | 김원준 | The pipe bender without mandrel |
| KR20100003192U (en) * | 2008-09-11 | 2010-03-19 | 문대복 | The apparatus for bending pipe |
| KR101042021B1 (en) * | 2010-11-26 | 2011-06-16 | 박윤배 | Heating pin manufacturer for car |
-
2016
- 2016-05-09 KR KR1020160056477A patent/KR101642675B1/en active IP Right Grant
-
2017
- 2017-05-04 CN CN201710308378.1A patent/CN107350316B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01180740A (en) * | 1987-12-28 | 1989-07-18 | Ogura:Kk | Device for bending reinforcing bar |
| EP0757925A1 (en) * | 1995-08-09 | 1997-02-12 | Rigobert Dipl.-Ing. Schwarze | Method for controlling a pipe bending machine |
| CN1210043A (en) * | 1997-08-29 | 1999-03-10 | 利里建筑机械有限公司 | Universal machine for bending pipes or section bars to both fixed and variable curvatures |
| CN1814370A (en) * | 2005-02-04 | 2006-08-09 | Cml国际有限公司 | Bending machine with a controlled-return bending die |
| KR101397974B1 (en) * | 2013-01-03 | 2014-05-27 | 김명호 | Bending device of wire products forming machine |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111491748A (en) * | 2017-12-11 | 2020-08-04 | Cml国际有限公司 | Hydraulic operated rotary pipe bender |
| CN111491748B (en) * | 2017-12-11 | 2023-03-14 | Cml国际有限公司 | Hydraulic operated rotary pipe bender |
| CN109013781A (en) * | 2018-08-09 | 2018-12-18 | 张建伟 | A kind of New Type Bending Pipe Unit |
| US10441984B1 (en) * | 2019-01-14 | 2019-10-15 | Todd Brochman | Conduit bender |
| US11253896B2 (en) | 2019-01-14 | 2022-02-22 | Brochman Innovations, Llc | Conduit bender |
| CN111608742A (en) * | 2019-02-25 | 2020-09-01 | 三菱重工压缩机有限公司 | Valve device and steam turbine |
| US10919080B1 (en) | 2019-12-27 | 2021-02-16 | Brochman Innovations, Llc | Tubing bender |
| USD926003S1 (en) | 2020-05-15 | 2021-07-27 | Brochman Innovations, Llc | Tubing bender |
| CN114247784A (en) * | 2021-12-22 | 2022-03-29 | 娄底福事特液压机械有限公司 | Pipe bending device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101642675B1 (en) | 2016-07-26 |
| CN107350316B (en) | 2018-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107350316A (en) | Utilize the portable tube bending machine of hydraulic pressure | |
| CN100488422C (en) | Machine for coffee beverage production | |
| CN103213925A (en) | Automatic filling machine | |
| CN110052648A (en) | A kind of hot melt drilling equipment for air conditioner piping | |
| CN107030225A (en) | Flat cable bending device | |
| CN106637710B (en) | Presser foot drive arrangement | |
| EP2333335B1 (en) | Portable hydraulic pump group for operating tools | |
| WO2003025439A3 (en) | Pressure reducer | |
| CN206082884U (en) | Button gondola water faucet time -out water structure | |
| CN206445759U (en) | Retainer component and the electric tool with the retainer component | |
| CN203159166U (en) | Automatic filling machine | |
| CN209393199U (en) | Multichannel spacing is adjustable liquid-transfering gun | |
| CN208527933U (en) | A kind of bending and molding device of metal wire rod | |
| CN109015716A (en) | A kind of clamping head convenient for control | |
| CN107918008A (en) | A kind of hose pumping equipment | |
| CN212524637U (en) | Control switch and adjustment mechanism of atomizer | |
| CN109227118A (en) | A kind of oil pump multistation production line for automatically assembling | |
| CN209175763U (en) | A kind of clamping head convenient for control | |
| CN209781326U (en) | higher oil feed valve of precision | |
| DE112018002899B4 (en) | Electric pump device | |
| CN220680681U (en) | Stapler type rotary receiving clamp | |
| CN207547339U (en) | Full-automatic pipe coil winding machine | |
| CN206476605U (en) | A kind of elastic regulation fixator of portable rope band | |
| CN214500192U (en) | Electric valve | |
| CN220893685U (en) | Ball valve tightness detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181130 Termination date: 20210504 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |