CN110340212A - A kind of tubing string rushes round device and method - Google Patents
A kind of tubing string rushes round device and method Download PDFInfo
- Publication number
- CN110340212A CN110340212A CN201910507632.XA CN201910507632A CN110340212A CN 110340212 A CN110340212 A CN 110340212A CN 201910507632 A CN201910507632 A CN 201910507632A CN 110340212 A CN110340212 A CN 110340212A
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- tubing string
- mould
- nutted rod
- rod
- bracket
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 238000004080 punching Methods 0.000 claims abstract description 23
- 230000033001 locomotion Effects 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 2
- 238000011017 operating method Methods 0.000 claims description 2
- 238000009510 drug design Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/34—Perforating tools; Die holders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
The present invention provides a kind of tubing strings to rush round device and method, is related to punching pipes technical field, and support level is equipped with support rod；Tension assembly includes nutted rod, and nutted rod can extend along being connected to bracket and being parallel to support rod for direction movement, and nutted rod one end connects driving mechanism so that nutted rod is moved back and forth along center axis direction, and driving mechanism is fixed on bracket；Mold core is placed in tubing string and corresponding with the punching end position of perforating press, and mold core includes the first mould and the second mould, and the first mould and the second mould are the wedge block that a pair is mutually matched, and the first mould is fixed on support rod, and the second mould is fixed on nutted rod to follow nutted rod to move；Pushing component includes pushing block, and pushing block can be moved along the bracket that is connected to that nutted rod extending direction slides to intermittent promotion tubing string；The present invention has rational design, provides a kind of completely new round impact style, completes the punching press to round using lesser mold core, effectively reduces the cost of replacement mold core.
Description
Technical field
The present invention relates to punching pipes technical fields, rush round device and method in particular to a kind of tubing string.
Background technique
Hollow tubular product radial aperture is processed as common processing method, and there are two types of processing methods in the prior art: one is
Tubing is placed on certain radial punching of point on drilling machine using the drill bit alignment tubing periphery on drilling machine, it is sometimes desirable to tubing axis
To continuously boring equidistant hole, this mode low efficiency, and it is not high to punch spacing accuracy；Another way is directly carried out with punching machine
Punching processing, from top to bottom carries out punching press using punch die, and since tubing is hollow form, tubing compression resistance is poor, so rush out
Bore edges recess can occur for hole obviously, the size in aperture be influenced, in order to make up this defect, the prior art such as Chinese invention patent
201510975642.8 --- tubing round processing technology and process equipment carry out after filling mold core again using in entire tubing
The mode of punching, the mold core needed is longer, and replacement cost is high after mold core damage.
Summary of the invention
The purpose of the present invention is to provide a kind of tubing strings to rush round device, uses and is arranged after mold core in tubing string again to pipe
Column is punched, while tubing string moves, and mold core position is constant, realizes the gradual filling of mold core, completes to carry out tubing string
Round is beaten, another object of the present invention is to provide a kind of tubing strings to rush round method, and above-mentioned tubing string is used to rush round device
Complete the punching to tubing string.
The embodiment of the present invention is achieved in that
A kind of tubing string rushes round device, including bracket, mold core, tension assembly and pushing component；
The branch is set up in workbench, and bracket is equipped with support rod, and the support rod is horizontally disposed；
The tension assembly includes nutted rod, the nutted rod can extend along direction it is mobile be connected to bracket and parallel
In the support rod, nutted rod one end connects driving mechanism so that nutted rod is along the reciprocating motion of center axis direction, the drive
Motivation structure is fixed on the bracket；
The mold core is placed in tubing string and corresponding with the punching end position of perforating press, and mold core includes the first mould and second
The inclined-plane of the wedge block that mould, first mould and the second mould are mutually matched for a pair, the first mould and the second mould slidably connects
To loosen or be tensioned the tubing string, the first mould is fixed on support rod, and the second mould is fixed on nutted rod far from driving mechanism one end
To follow nutted rod reciprocating；
The pushing component includes pushing block, and the bracket that is connected to that the pushing block can be slided along nutted rod extending direction is used
It is mobile with intermittent promotion tubing string.
Further, the nutted rod connects the driving mechanism by sliding block, and described sliding block one end connects driving mechanism
Output end, the other end of sliding block connects the nutted rod, and sliding block can be connected to the branch along what nutted rod extending direction slided
Frame.
Further, the support rod can be connected to the bracket along itself extending direction is movable, and solid by bolt
It is fixed.
It further, further include slideway to carry tubing string, the slideway is fixed on the bracket and is located at nutted rod
Underface.
Further, the slideway includes a pair of of fixed link and several rollers, and the branch is fixed at a pair of slideway interval
Frame and it is parallel to the nutted rod, several rollers, which are rotatably spaced, to be connected between a pair of of slideway.
Further, the pushing component further includes mounting base and screw component, and the screw rod of screw component is rotatably connected
In the bracket and it is parallel to the nutted rod setting, screw rod transmission is connected to motor, and the mounting base is fixed on screw rod group valence
Nut, the pushing block is installed on mounting base.
Further, the pushing block is connected to mounting base by position adjusting mechanism, and the position adjusting mechanism includes
Vertical adjustment plate and lateral adjustments plate, what the vertical adjustment plate can slide vertically is installed on the mounting base, described laterally to adjust
What section plate can slide laterally is installed on vertical adjustment plate, and pushing block is fixed on lateral adjustments plate.
Further, the motor is stepper motor.
Further, the pushing block is equipped with the lever to clamp tubing string, and described lever one end is used close to the mold core
With clamping connection tubing string, the lever other end is equipped with to provide the wedge block of clamping force, and the wedge block can be along the nutted rod
Sliding is connected to pushing block, and wedge block is connected to the output end of cylinder far from lever one end, and the cylinder is fixed on promotion
Block.
A kind of tubing string rushes round method, rushes round device using tubing string described in any one as above；Operating procedure is as follows:
S1. tubing string head end is sheathed on mold core；
S2. tubing string is pushed, is connected to tubing string head end on pushing block, support rod and nutted rod are placed on interior by tubing string at this time
Portion；
S3. nutted rod moves forward the first mould for making mold core and the second mould is made mutually from movement；
S4. after the first mould and the second mould push against pipe string internal wall, start perforating press, tubing string is punched；
S5. after the completion of punching, nutted rod, which moves backward, moves toward one another the first mould of mold core and the second mould；
S6. after the first mould and the second mould unclamp pipe string internal wall, mobile pushing block pushes tubing string to move forward a distance；
S7. S3 to S6 is repeated, is operated, until tubing string round completes.
The beneficial effects of the present invention are:
In the use of the present invention, tubing string head end is sheathed on mold core first, tubing string is then pushed, abuts tubing string head end
In on pushing block, support rod and nutted rod are placed on inside by tubing string at this time, and nutted rod forward movement pushes against mold core in tubing string
Wall starts perforating press, punches to tubing string, and after the completion of punching, nutted rod is moved backward, and unclamps mold core, and mobile pushing block pushes away
Dynamic tubing string moves forward a distance, and moving forward nutted rod again makes mold core push against pipe string internal wall, starting puncher punching, weight
Multiple aforesaid operations are until punching press round is completed.
The present invention has rational design, structure is simple, provides a kind of completely new round impact style, complete using lesser mold core
The punching press of pairs of round, effectively reduces the cost of replacement mold core.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram for rushing round device that the embodiment of the present invention 1 provides；
Fig. 2 is the front view for the tension assembly that the embodiment of the present invention 1 provides；
Fig. 3 is the top view for the tension assembly that the embodiment of the present invention 1 provides；
Fig. 4 is the front view for the pushing component that the embodiment of the present invention 1 provides；
Fig. 5 is the top view for the pushing component that the embodiment of the present invention 1 provides；
Fig. 6 is the structural schematic diagram for the pushing block that the embodiment of the present invention 1 provides；
Fig. 7 is the status diagram that the mold core that the embodiment of the present invention 1 provides unclamps tubing string；
Fig. 8 is the process schematic that the mold core that the embodiment of the present invention 1 provides is tensioned tubing string；
Icon: 1- bracket, 11- support rod, 12- bolt, 2- mold core, the first mould of 21-, the second mould of 22-, 3- tension assembly,
31- nutted rod, 32- driving mechanism, 33- sliding block, 4- pushing component, 41- pushing block, 42- mounting base, 43- screw component, 43a-
Screw rod, 43b- nut, 44- position adjusting mechanism, 44a- vertical adjustment plate, 44b- lateral adjustments plate, 45- lever, 46- wedge shape are sliding
Block, 47- cylinder, 48- motor, 5- tubing string, 6- perforating press, 7- slideway, 71- fixed link, 72- roller.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Invention product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as limitation of the present invention.
Term " first ", " second ", " third " etc. are only used for distinguishing description, are not understood to indicate or imply relatively heavy
The property wanted.
Term " parallel ", " vertical " etc. are not offered as requiring component absolute parallel or vertical, but can be slightly tilted.Such as
" parallel " only refers to that its direction is more parallel with respect to for " vertical ", is not that the expression structure has to be substantially parallel, and
It is that can be slightly tilted.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be directly connected, the connection inside two elements can also be can be indirectly connected through an intermediary.
For the ordinary skill in the art, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Embodiment 1
Please refer to Fig. 1, a kind of tubing string rushes round device, including bracket 1, mold core 2, tension assembly 3 and pushing component 4.
Bracket 1 is set to workbench, and bracket 1 is equipped with support rod 11, and the support rod 11 is horizontally disposed.
Referring to figure 2. and Fig. 3, tension assembly 3 include nutted rod 31, and nutted rod 31 can extend along the mobile connection in direction
In bracket 1 and it is parallel to the support rod 11,31 one end of nutted rod connects driving mechanism 32 so that nutted rod 31 is along center
Axis direction moves back and forth, and the driving mechanism 32 is fixed on the bracket 1.
In order to avoid the gravity of nutted rod 31 plays the power of a non-output end outbound course, this implementation to driving mechanism 32
In example, nutted rod 31 connects driving mechanism 32 by sliding block 33, and 33 one end of sliding block connects the output end of driving mechanism 32, sliding block 33
The other end connect nutted rod 31, sliding block 33 can along 31 extending direction of nutted rod slide be connected to bracket 1, sliding block 33, which plays, to be held
The effect of nutted rod 31 is carried, while playing the role of guiding.
Fig. 7 and Fig. 8 are please referred to, mold core 2 is placed in tubing string 5 and corresponding with the punching end position of perforating press 6, the packet of mold core 2
The first mould 21 and the second mould 22 are included, first mould 21 and the second mould 22 are a pair of wedge block being mutually matched, 21 He of the first mould
The inclined-plane of second mould 22 is slidably connected to loosen or be tensioned the tubing string 5, and the first mould 21 is fixed on support rod 11, and second
Mould 22 is fixed on nutted rod 31 far from 32 one end of driving mechanism to follow nutted rod 31 reciprocating.
Mold core 2 need always the punching end to positive perforating press need to adjust mould when replacing different size of mold core
The position of core, the regulative mode that the present embodiment uses are as follows: support rod 11 can be connected to bracket 1 along itself extending direction is movable,
And it is fixed by bolt 12.
Referring to figure 4. and Fig. 5, pushing component 4 include pushing block 41, and pushing block 41 can be slided along 31 extending direction of nutted rod
To be connected to bracket 1 mobile to intermittent promotion tubing string 5；Pushing component 4 further includes mounting base 42 and screw component 43, silk
The screw rod 43a of bar assembly 43 is rotationally connected with bracket 1 and is parallel to the setting of nutted rod 31, and screw rod 43a is sequentially connected in motor
48, for motor 48 preferably with stepper motor, mounting base 42 is fixed on the nut 43b of screw component 43, and the pushing block 41 is installed
In mounting base 42.
Pushing block 41 is connected to mounting base 42 by position adjusting mechanism 44, and position adjusting mechanism 44 includes vertical adjustment plate
44a and lateral adjustments plate 44b, what vertical adjustment plate 44a can slide vertically is installed on mounting base 42, and lateral adjustments plate 44b can be horizontal
It is installed on vertical adjustment plate 44a to sliding, pushing block 41 is fixed on lateral adjustments plate 44b, by adjusting lateral adjustments plate 44b
So that pushing block 41 is always positioned at right above nutted rod 31, by adjusting vertical adjustment plate 44a to adapt to the tubing string of different size
5, vertical adjustment plate 44a and lateral adjustments plate 44b are all made of bolt after the completion of adjusting and fix.
The principle that the present invention realizes are as follows: 5 head end of tubing string is sheathed on mold core 2 first, tubing string 5 is then pushed, makes tubing string 5
Head end is connected on pushing block 41, and support rod 11 and nutted rod 31 are placed on inside by tubing string 5 at this time, and nutted rod 31 moves forward
So that mold core 2 is pushed against pipe string internal wall, starts perforating press 6, tubing string 5 is punched, after the completion of punching, nutted rod 31 is moved backward,
Mold core 2 is unclamped, mobile pushing block 41 pushes tubing string 5 to move forward a distance, and moving forward nutted rod 31 again supports mold core 2
5 inner wall of tight tubing string, starting puncher 6 punch, and repeat aforesaid operations until punching press round is completed.
In order to avoid tubing string be in sliding process it is hanging, in the present embodiment, the invention also includes to carry tubing string 5
Slideway 7, slideway 7 be fixed on bracket 1 and be located at nutted rod 31 underface, and slide 7 a kind of preferable embodiment are as follows:
Slideway 7 includes a pair of of fixed link 71 and several rollers 72, and a pair of of interval of slideway 7 is fixed on bracket 1 and is parallel to nutted rod 31, several
Rotatably interval is connected between a pair of of slideway 7 roller 72.
After 5 head end of tubing string is socketed on mold core 2, push tubing string 5 be connected to pushing block 41 be than heavier, it is relatively elaborate,
Therefore in the present embodiment, Fig. 6 is please referred to, pushing block 41 is equipped with the lever 45 to clamp tubing string 5, and 45 one end of lever is close to mold core
2 to clamping connection tubing string 5, compressed spring is equipped between the lever 45 and pushing block 41 at this end, so that this end remains opening, thick stick
45 other end of bar is equipped with to provide the wedge block 46 of clamping force, and wedge block 46 can be pushed away along being connected to for the sliding of nutted rod 31
Motion block 41, wedge block 46 are connected to the output end of cylinder 47 far from 45 one end of lever, and cylinder 47 is fixed on pushing block 41, realize
Principle are as follows: after 5 head end of tubing string is socketed on mold core 2, pushing block 41 is moved to close to tubing string 5, so that 45 one end of lever is clamped
Tubing string 5, while the cylinder 47 of the other end pushes wedge block 46 to move forward, and pushes against 45 other end of lever, so that lever 45 presss from both sides
Tight tubing string 5, then pushing block 41 retracts to initial position, starts above-mentioned punch operation.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of tubing string rushes round device, it is characterised in that: including bracket (1), mold core (2), tension assembly (3) and pushing component
(4)；
The bracket (1) is set to workbench, and bracket (1) is equipped with support rod (11), and the support rod (11) is horizontally disposed；
The tension assembly (3) includes nutted rod (31), the nutted rod (31) can extend along direction it is mobile be connected to branch
Frame (1) and be parallel to the support rod (11), nutted rod (31) one end connect driving mechanism (32) so that nutted rod (31) along from
Body central axis direction moves back and forth, and the driving mechanism (32) is fixed on the bracket (1)；
The mold core (2) is placed in tubing string (5) and corresponding with the punching end position of perforating press (6), and mold core (2) includes the first mould
(21) and the second mould (22), first mould (21) and the second mould (22) are a pair of wedge block being mutually matched, the first mould (21)
It slidably connects with the inclined-plane of the second mould (22) to loosen or be tensioned the tubing string (5), the first mould (21) is fixed on support
Bar (11), the second mould (22) are fixed on nutted rod (31) far from driving mechanism (32) one end to follow nutted rod (31) to make reciprocal fortune
It is dynamic；
The pushing component (4) includes pushing block (41), what the pushing block (41) can be slided along nutted rod (31) extending direction
It is mobile to intermittent promotion tubing string (5) to be connected to bracket (1).
2. tubing string according to claim 1 rushes round device, it is characterised in that: the nutted rod (31) passes through sliding block (33)
Connect the driving mechanism (32), the output end of described sliding block (33) one end connection driving mechanism (32), sliding block (33) it is another
End connects the nutted rod (31), and sliding block (33) can be connected to the bracket (1) along what nutted rod (31) extending direction slided.
3. tubing string according to claim 1 rushes round device, it is characterised in that: the support rod (11) can extend along itself
Direction is movable to be connected to the bracket (1), and fixed by bolt (12).
4. tubing string according to claim 1 rushes round device, it is characterised in that: further include the cunning to carry tubing string (5)
Road (7), the slideway (7) are fixed on the bracket (1) and are located at the underface of nutted rod (31).
5. tubing string according to claim 4 rushes round device, it is characterised in that: the slideway (7) includes a pair of of fixed link
(71) it is fixed on the bracket (1) with several rollers (72), a pair of slideway (7) interval and is parallel to the nutted rod (31),
Rotatably interval is connected between a pair of of slideway (7) several rollers (72).
6. tubing string according to claim 1 rushes round device, it is characterised in that: the pushing component (4) further includes installation
Seat (42) and screw component (43), the screw rod (43a) of screw component (43) are rotationally connected with the bracket (1) and are parallel to institute
Nutted rod (31) setting is stated, screw rod (43a) is sequentially connected in motor (48), and the mounting base (42) is fixed on screw component (43)
Nut (43b), the pushing block (41) is installed on mounting base (42).
7. tubing string according to claim 6 rushes round device, it is characterised in that: the pushing block (41) is adjusted by position
Mechanism (44) is connected to mounting base (42), and the position adjusting mechanism (44) includes vertical adjustment plate (44a) and lateral adjustments plate
(44b), what the vertical adjustment plate (44a) can slide vertically is installed on the mounting base (42), the lateral adjustments plate (44b)
What can be slid laterally is installed on vertical adjustment plate (44a), and pushing block (41) is fixed on lateral adjustments plate (44b).
8. tubing string according to claim 6 rushes round device, it is characterised in that: the motor (48) is stepper motor.
9. tubing string according to claim 1 rushes round device, it is characterised in that: the pushing block (41) is equipped with to clamp
The lever (45) of tubing string (5), close to the mold core (2) to clamping connection tubing string (5), lever (45) is another for described lever (45) one end
End is equipped with to provide the wedge block (46) of clamping force, the company that the wedge block (46) can be slided along the nutted rod (31)
It is connected to pushing block (41), wedge block (46) is connected to the output end of cylinder (47), the cylinder far from lever (45) one end
(47) it is fixed on pushing block (41).
10. a kind of tubing string rushes round method, it is characterised in that: using tubing string as claimed in any one of claims 1 to 9 punching row
Aperture apparatus；Operating procedure is as follows:
S1. tubing string head end is sheathed on mold core；
S2. tubing string is pushed, is connected to tubing string head end on pushing block, support rod and nutted rod are placed on inside by tubing string at this time；
S3. nutted rod moves forward the first mould for making mold core and the second mould is made mutually from movement；
S4. after the first mould and the second mould push against pipe string internal wall, start perforating press, tubing string is punched；
S5. after the completion of punching, nutted rod, which moves backward, moves toward one another the first mould of mold core and the second mould；
S6. after the first mould and the second mould unclamp pipe string internal wall, mobile pushing block pushes tubing string to move forward a distance；
S7. S3 to S6 is repeated, is operated, until tubing string round completes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910507632.XA CN110340212A (en) | 2019-06-12 | 2019-06-12 | A kind of tubing string rushes round device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910507632.XA CN110340212A (en) | 2019-06-12 | 2019-06-12 | A kind of tubing string rushes round device and method |
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| CN110340212A true CN110340212A (en) | 2019-10-18 |
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| CN201910507632.XA Pending CN110340212A (en) | 2019-06-12 | 2019-06-12 | A kind of tubing string rushes round device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112060197A (en) * | 2020-08-21 | 2020-12-11 | 葛玉珍 | PE pipe processing technology |
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