CN101402126A - Internal ribbed tube molding device - Google Patents
Internal ribbed tube molding device Download PDFInfo
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- CN101402126A CN101402126A CNA2008101073837A CN200810107383A CN101402126A CN 101402126 A CN101402126 A CN 101402126A CN A2008101073837 A CNA2008101073837 A CN A2008101073837A CN 200810107383 A CN200810107383 A CN 200810107383A CN 101402126 A CN101402126 A CN 101402126A
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Abstract
The invention relates to a forming device for an internally threaded tube, which is used for making internal threads on an inner wall of a blank tube. The device comprises a rotary rolling mechanism and a drawing mechanism arranged in front of a bland tube for drawing the bland tube out, wherein the rotary rolling mechanism comprises a rotating motor, a shaft housing driven by the rotating motor to rotate, a slide bush which is static relative to the shaft housing and can slide along an outer wall of the shaft housing, a piston driven by air pressure and hydraulic pressure to move axially, a bearing arranged between the piston and the slide bush, a plurality of balls and an inner core with threads, wherein an inner ring and an outer ring of the bearing are fixedly connected with the slide bush and the piston respectively. The device adopts replaces a shifting fork with a piston which arranged coaxially with the bearing on the slide bush, the slide bush, the shaft housing and the blank tube. During rolling operation, the slide bush rotates to drive the bearing to rotate synchronously. Meanwhile the design can greatly improve the service life of the bearing.
Description
Technical field
The present invention relates to the metal pipe material manufacture field, be specifically related to a kind of internal ribbed tube molding device, process a kind of device of screw thread on the internal face of mode by drawing and ball rolling the base pipe.
Background technology
In the production and processing of metal tube, inside pipe wall to be processed screw thread usually, claim riffled tube again, it is widely used, and for example needs to use riffled tube in refrigerator and the air-conditioning.
In the prior art, adopt the mode of drawing and steel ball roll extrusion that the base pipe is carried out internal thread machining usually, as shown in Figure 1,
This device comprises revolving-rolling mechanism (51), is arranged on the drawing mechanism (not shown) that base pipe (53) front end is used to pull out base pipe (53).The axle sleeve (511) that revolving-rolling mechanism (51) comprises the electric rotating machine (not shown), rotate under the driving of electric rotating machine, with respect to axle sleeve (511) spline and the sliding sleeve (512) that can slide along axle sleeve (511) outer wall, be subjected to cylinder (5130) to drive fork (513), bearing (516 or 517), a plurality of ball (514), the screwed inner core (515) that moves vertically.Axle sleeve (511) is located at base pipe (53) periphery, and ball (514) contacts with the front end face of axle sleeve (511), the internal face of sliding sleeve (512), the outside wall surface of base pipe (53), and inner core (515) is arranged in the base pipe (53) of ball (514) position.
Sliding sleeve (512) internal face is a conical surface, on sliding sleeve (512) internal face near base pipe (53) position (5121) and ball (514) when contacting, the conical surface of sliding sleeve (512) is to lower press rolls pearl (514), make ball (514) extruded stock pipe, axle sleeve (511) rotation drives sliding sleeve (512) rotation, driving the ball (514) that contacts with them by frictional force rolls on base pipe (53) outside wall surface, base pipe (53) is subjected to the roll extrusion of ball (514), the extruding of base inside pipe wall face and inner core, thus on internal face, process screw thread with the inner core threads engaged.In the time of roll extrusion, drawing mechanism spurs base pipe (53) evenly vertically, pulls out the metal tube that processes internal thread.Can also one mould (56) be set at the drive end bearing bracket place of device, the metal tube of machining internal thread passes through mould (56) thereby makes finished product under the effect of drawing mechanism.
If will process the metal tube of band light pipe section (no internal thread segment), can move (as shown in Figure 1 vertically by control cylinder (5130) shift fork (513), move backward), shift fork (513) drives sliding sleeve (512) by fork bearing (516,517) and slides along axle sleeve (511), contact with ball (514) than the position (5122) away from base pipe (53) on sliding sleeve (512) internal face, ball (514) does not push or roll extrusion base pipe (53).
There are a lot of problems in existing riffled tube processing unit (plant), and is specific as follows:
1) adopt the fork mode to promote sliding sleeve, the shift fork bearing is fixedlyed connected with shift fork and is embedded on sliding sleeve, and CONTACT WITH FRICTION between bearing and the sliding sleeve drives the shift fork rotation by frictional force during the sliding sleeve rotation, that is to say shift fork rotation and axle sleeve and sliding sleeve disalignment.Generally in when work, the velocity of rotation of axle sleeve and sliding sleeve all very high (greater than 7000rpm), and the external diameter of shift fork bearing is less than the external diameter of sliding sleeve, therefore, shift fork bearing rotation rotating speed will be higher than the rotating speed of sliding sleeve, is unfavorable for the service life of bearing;
2) the shift fork bearing can't independently lubricate;
3) the shift fork bearing is a symmetric arrangement, but because the asynchronous and way of propelling of two cover executive components is to adopt cantilever design, therefore is unfavorable for the service precision and the service life of parts;
4) common, accept by a disk end face and declutch shift shaft with sliding sleeve and to touch, because the linear velocity difference of disk end face different radii, and the external circe speed of bearing is consistent, therefore will have relative slip after bearing top circle and former dish end face contact, very easily generation is worn and torn.
These above-mentioned problems are all totally unfavorable to the use of fork bearing, and generally the shift fork bearing can only use 5～100 hours.
Summary of the invention
Technical problem to be solved by this invention provides a kind of internal ribbed tube molding device, and it is used for the base inside pipe wall is processed screw thread.
For solving above technical problem, the present invention takes following technical scheme:
A kind of internal ribbed tube molding device comprises the drawing mechanism, the revolving-rolling mechanism that are arranged on base pipe front end and are used to pull out the base pipe, wherein,
Described revolving-rolling mechanism comprises electric rotating machine, at the axle sleeve that rotates under the driving of electric rotating machine, with respect to axle sleeve spline and the sliding sleeve that can slide along the axle sleeve outer wall, be subjected to piston that air pressure or hydraulic-driven move vertically, be arranged on the bearing between piston and the sliding sleeve, a plurality of ball, screwed inner core
Described axle sleeve is located at base pipe periphery, fixedly connected with sliding sleeve with piston respectively with inner ring in the outer ring of described bearing, described ball contacts with the front end face of axle sleeve, the internal face of sliding sleeve, the outside wall surface of base pipe, and described inner core is arranged in the base pipe of ball position
Described sliding sleeve internal face has first operating position of close base pipe and away from second operating position of base pipe, when first operating position of sliding sleeve internal face contacts with ball, and the outside wall surface of ball extruded stock pipe; Piston moves the promotion sliding sleeve vertically and moves, and when second operating position of sliding sleeve internal face contacted with ball, ball is the outside wall surface of extruded stock pipe not.
The internal ribbed tube molding device of said structure has adopted piston to substitute fork, and piston, is arranged on bearing, sliding sleeve, axle sleeve, the coaxial setting of base pipe on the sliding sleeve.During roll extrusion work, the bearing that the sliding sleeve rotation drives on the sliding sleeve rotates synchronously, has improved the service precision and the service life of the bearing on the sliding sleeve greatly.
As a further improvement on the present invention, the bearing that is arranged on the sliding sleeve is preferably rolling bearing, and during roll extrusion work, piston does not rotate with sliding sleeve.
Further improve as of the present invention, the internal face of described sliding sleeve is a taper surface.
Base pipe outside wall surface between drawing mechanism and the inner core can also be provided with mould, promptly at the front end face place of device one mould is set, and further processes at the metal tube that will finish internal thread machining and makes finished product.
Compared with prior art, improve greatly the service life of internal ribbed tube molding device middle (center) bearing of the present invention (being arranged on the sliding sleeve).
Description of drawings
The present invention will be described in detail below in conjunction with embodiment, but be not limited to these embodiment.
Phantom when Fig. 1 is in not roll extrusion duty for existing internal ribbed tube molding device;
Phantom when Fig. 2 is in the roll extrusion duty for internal ribbed tube molding device of the present invention;
Fig. 3 is the not phantom during roll extrusion of internal ribbed tube molding device shown in Figure 2;
Wherein:
1, revolving-rolling mechanism; 11, axle sleeve; 111, bearing; 112, bearing; 12, sliding sleeve; 121, first operating position; 122, second operating position, 13, piston; 14, ball; 15, inner core; 16, bearing; 17, bearing;
3, base pipe; 4, drive end bearing bracket; 5, support; 6, mould;
51, revolving-rolling mechanism; 511, axle sleeve; 512, sliding sleeve; 5121, first operating position; 5122, second operating position, 513, fork; 5130, cylinder; 514, ball; 515, inner core; 516, bearing; 517, bearing;
53, base pipe; 56, mould.
The specific embodiment
Referring to Fig. 2, Fig. 3, a kind of internal ribbed tube molding device, it is used for base pipe 3 inwalls are processed screw thread, and this device comprises and is arranged on drawing mechanism (not shown), the revolving-rolling mechanism 1 that base pipe 3 front ends are used to pull out base pipe 3, wherein:
Revolving-rolling mechanism 1 comprises the electric rotating machine (not shown), at the axle sleeve 11 that rotates under the driving of electric rotating machine, with respect to axle sleeve 11 splines and the sliding sleeve 12 that can slide along axle sleeve 11 outer walls, be subjected to piston 13 that air cylinder driven moves vertically, be arranged on bearing 16 or 17, a plurality of ball 14, screwed inner core 15 between piston 13 and the sliding sleeve 12.
Fixedly connected with sliding sleeve 12 with piston 13 respectively with inner ring in the outer ring of bearing 16, bearing 17, ball 14 contacts with the front end face of axle sleeve 11, the internal face of sliding sleeve 12, the outside wall surface of base pipe 3, and inner core 15 is arranged in the base pipe 3 of ball 14 positions.
Sliding sleeve 12 internal faces have first operating position 121 of close base pipe 3 and away from second operating position 122 of base pipe 3, shown in Fig. 3,4, sliding sleeve 12 internal faces are a conical surface.
As shown in Figure 2, when first operating position 121 of sliding sleeve 12 internal faces contacts with ball 14, the outside wall surface of ball 14 extruded stock pipes 3, axle sleeve 11 rotations drive sliding sleeve 12 rotations, driving the ball 14 that contacts with them by frictional force rolls on base pipe 3 outside wall surface, base pipe 3 is subjected to the roll extrusion of ball 14,15 extruding of base pipe 3 internal faces and inner core, thus on internal face, process screw thread with the inner core threads engaged.In the time of roll extrusion, drawing mechanism spurs base pipe 3 evenly vertically, pulls out the metal tube that processes internal thread, thereby the metal tube of machining internal thread makes finished product through mould 6 under the effect of drawing mechanism.
Piston 13 moves axially in the promotion lower edge of cylinder, thereby promoting sliding sleeve 12 by bearing 16 and bearing 17 moves, as Fig. 3, sliding sleeve 12 moves backward, when second operating position 122 of sliding sleeve 12 internal faces contacts with ball 14, ball 14 is the outside wall surface of extruded stock pipe 3 not, promptly processes the metal tube of band light pipe section (no internal thread segment).
The foregoing description only is explanation technical conceive of the present invention and characteristics; its purpose is to allow the personage that is familiar with this art can understand content of the present invention and is implemented; can not limit protection scope of the present invention with this; all equivalences that spirit essence is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (4)
1, a kind of internal ribbed tube molding device, it is used for base pipe (3) inwall is processed screw thread, and this device comprises revolving-rolling mechanism (1), is arranged on the drawing mechanism that base pipe (3) front end is used to pull out base pipe (3), it is characterized in that:
Described revolving-rolling mechanism (1) comprises electric rotating machine, at the axle sleeve that rotates under the driving of electric rotating machine (11), with respect to axle sleeve (11) spline and the sliding sleeve (12) that can slide along axle sleeve (11) outer wall, be subjected to piston (13) that air pressure or hydraulic-driven move vertically, be arranged on bearing (16 or 17), a plurality of ball (14), screwed inner core (15) between piston (13) and the sliding sleeve (12)
Described axle sleeve (11) is located at base pipe (3) periphery, fixedly connected with sliding sleeve (12) with piston (13) respectively with inner ring in the outer ring of described bearing (16 or 17), described ball (14) contacts with the front end face of axle sleeve (11), the internal face of sliding sleeve (12), the outside wall surface of base pipe (3), described inner core (15) is arranged in the base pipe (3) of ball (14) position
Described sliding sleeve (12) internal face has first operating position (121) of close base pipe (3) and away from second operating position (122) of base pipe (3), when first operating position (121) of sliding sleeve (12) internal face and ball (14) when contacting, the outside wall surface of ball (14) extruded stock pipe (3); Piston (13) move to promote sliding sleeve (12) vertically and moves, and when second operating position (122) of sliding sleeve (12) internal face and ball (14) when contacting, ball (14) is the outside wall surface of extruded stock pipe (3) not.
2, a kind of internal ribbed tube molding device according to claim 1 is characterized in that: described bearing (16 or 17) is a rolling bearing.
3, a kind of internal ribbed tube molding device according to claim 1 is characterized in that: the internal face of described sliding sleeve (12) is a taper surface.
4, a kind of internal ribbed tube molding device according to claim 1 is characterized in that: base pipe (3) outside wall surface between described drawing mechanism (2) and the inner core (15) is provided with mould (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101073837A CN101402126A (en) | 2008-11-10 | 2008-11-10 | Internal ribbed tube molding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101073837A CN101402126A (en) | 2008-11-10 | 2008-11-10 | Internal ribbed tube molding device |
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| Publication Number | Publication Date |
|---|---|
| CN101402126A true CN101402126A (en) | 2009-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101073837A Pending CN101402126A (en) | 2008-11-10 | 2008-11-10 | Internal ribbed tube molding device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108246940A (en) * | 2018-01-19 | 2018-07-06 | 苏州钢特威钢管有限公司 | Cold drawing steel tube internal screw forming device |
| CN110788262A (en) * | 2019-08-23 | 2020-02-14 | 南通福乐华机械有限公司 | Large-pitch internal thread surface forming device for thin-wall part |
| CN111036809A (en) * | 2019-12-27 | 2020-04-21 | 内蒙古工业大学 | Extrusion equipment and processing method for internal threaded pipe |
| CN113182414A (en) * | 2021-05-10 | 2021-07-30 | 哈尔滨韦玛通信工程有限公司 | Continuous spinning bonding combination equipment for copper-clad steel grounding rod |
| CN113385550A (en) * | 2021-06-30 | 2021-09-14 | 重庆龙煜精密铜管有限公司 | Threaded pipe production process |
| CN113967708A (en) * | 2021-11-26 | 2022-01-25 | 广东欧亚包装有限公司 | ROPP screw device |
-
2008
- 2008-11-10 CN CNA2008101073837A patent/CN101402126A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108246940A (en) * | 2018-01-19 | 2018-07-06 | 苏州钢特威钢管有限公司 | Cold drawing steel tube internal screw forming device |
| CN108246940B (en) * | 2018-01-19 | 2023-12-08 | 苏州钢特威钢管有限公司 | Cold-drawn steel tube internal thread forming device |
| CN110788262A (en) * | 2019-08-23 | 2020-02-14 | 南通福乐华机械有限公司 | Large-pitch internal thread surface forming device for thin-wall part |
| CN111036809A (en) * | 2019-12-27 | 2020-04-21 | 内蒙古工业大学 | Extrusion equipment and processing method for internal threaded pipe |
| CN111036809B (en) * | 2019-12-27 | 2022-02-11 | 内蒙古工业大学 | Extrusion equipment and processing method for internal threaded pipe |
| CN113182414A (en) * | 2021-05-10 | 2021-07-30 | 哈尔滨韦玛通信工程有限公司 | Continuous spinning bonding combination equipment for copper-clad steel grounding rod |
| CN113385550A (en) * | 2021-06-30 | 2021-09-14 | 重庆龙煜精密铜管有限公司 | Threaded pipe production process |
| CN113967708A (en) * | 2021-11-26 | 2022-01-25 | 广东欧亚包装有限公司 | ROPP screw device |
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Open date: 20090408 |