CN202803750U - Upper ejector roller for pre-rotation of ejector rod - Google Patents
Upper ejector roller for pre-rotation of ejector rod Download PDFInfo
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- CN202803750U CN202803750U CN 201220205685 CN201220205685U CN202803750U CN 202803750 U CN202803750 U CN 202803750U CN 201220205685 CN201220205685 CN 201220205685 CN 201220205685 U CN201220205685 U CN 201220205685U CN 202803750 U CN202803750 U CN 202803750U
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- screw rod
- push rod
- fixedly connected
- hydraulic cylinder
- rotation
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Abstract
The utility model relates to an upper ejector roller for pre-rotation of an ejector rod. The lower part of an upper cover is fixedly connected with a back-stage two-section frame assembly (14); a hand wheel (4), a screw rod (6), a hydraulic cylinder (8) and an upper friction roller (10) are arranged in the middle of the upper cover (1) from the top down; the hand wheel is fixedly connected with one end of the screw rod; a screw nut (2) is arranged on the excircle surface of the screw rod; the excircle surface of the screw rod is in threaded connection with the screw nut; the other end of the screw rod is fixedly connected with the piston rod of the hydraulic cylinder; the lower part of the hydraulic cylinder is fixedly connected with a bearing support (9); a shaft (11) is arranged at the middle lower part of the bearing support; and the upper friction roller is arranged on the shaft. According to the upper ejector roller, torque is transmitted through the screw rod, and as one end of the screw rod is hemispherical, the screw rod cannot be stuck; springs are arranged and can reduce load impact caused by thread clearances of the screw rod; and after the ejector rod starts rotating under the action of friction torque of a pipe blank, the hydraulic cylinder acts, and the friction roller is quickly lifted, so as to realize automation.
Description
[technical field]
The utility model relates to top roller device on a kind of push rod pre-rotation, is specifically related to the upper top roller device in a kind of big-and-middle-sized piercing mill of seamless steel tube group push rod pre-rotation structure.
[background technology]
Punch is the main former of seamless steel tube production, it is to utilize two rolls, upper bottom guide and come directly towards formed closed type (rolling groove), at high temperature the steel pipe blank is carried out rolloff and makes it pass closed type, make solid bar pierce into seamless steel pipe; The major impetus source of punch in perforation procedure is two rolls, under huge roll-force and frictional force effect, complicated plastic deformation occurs in pipe, and rotates and move along the roll line direction around roll line, push rod under the effect of frictional force also along with pipe rotates together; In middle-size and small-size perforation unit, usually the diameter of push rod length little, push rod is not long, therefore the rotary inertia less of push rod, push rod rotate required rotating torque and by pipe the frictional force of top are provided, and generally can not cause pipe to be torn in the perforation procedure or the accident such as the difficulty of boring a hole; But for large-scale punching machine, along with the increase of push rod diameter, the increase of push rod length, the push rod rotary inertia is corresponding increase also, therefore wants to make push rod to rotate with pipe in perforation procedure and must make push rod obtain larger rotating torque; After the push rod rotary inertia is increased to a certain degree, it is very difficult only depending on pipe to the frictional force that comes directly towards it to be rotated in the operation of rolling, cause easily the overlapping defective of internal surface of bloom or roll-force increase to make perforation procedure be difficult to carry out smoothly, serious meeting generation pipe such as is torn at the accident.
So, in big-and-middle-sized perforation unit design process, need to improve with pre-rotation apparatus the quality of seamless steel pipe perforation, pre-rotation apparatus is can produce characteristics with pop-off moment according to frictional force, the major way of frictional force as the moment transmission, by three friction rollers that can hold at one time and break away from push rod tightly, be snapped into pass and touch moment of top at pipe, three friction rollers are held push rod tightly and are provided starting friction moment to the rotation of push rod.
Pre-rotation apparatus is mainly by three friction roller installation compositions that become respectively the 120o angle, and can three friction rollers be accurately located and determined produce enough large frictional force and make push rod generation pre-rotation; Wherein the top roller device is used for the upper friction roller in location on the push rod pre-rotation, and cooperates other two friction rollers to realize the action of push rod pre-rotation; The top roller device has the following disadvantages on the existing push rod pre-rotation: one, adopt two screw rods to depress simultaneously, the asynchronous rotation of screw rod is easy to cause stuck phenomenon; When push rod departs from the friction roller center for the pressure of upper friction roller, also can cause screw deadlocking, bring a lot of inconvenience for normal production; Two, two screw rod lower ends all are equipped with the dish spring, and effect is to eliminate thread pitch, the impact of cushion load double thread; After upper friction roller position was fixing, the dish spring can absorb load impacting; According to on-the-spot operating position, after three friction roller centering, when upper top roller drove the push rod rotation, the dish spring can not produce enough large elastic force and keep upper top roller setting position motionless; Three, push rod is after beginning rotation under the effect of pipe moment of friction, and the manual rotation two screw rods realizes that upper friction roller lifts, and manual operation does not reach production requirement fully.
[summary of the invention]
In order to overcome the deficiency in the background technology, the utility model discloses top roller device on a kind of push rod pre-rotation, the utility model adopts a screw rod transmitting torque, and screw rod domed ends allowable load has certain inclination angle, can not cause screw deadlocking; Setting provides the spring of pretightning force, reduces the load impacting that cause in the screw flight gap; Push rod is after beginning rotation under the effect of pipe moment of friction, hydraulic cylinder moves, and the fast lifting friction roller is realized automation.
For achieving the above object, the utility model adopts following technical scheme:
Top roller device on a kind of push rod pre-rotation, comprise loam cake, handwheel, screw rod, hydraulic cylinder and upper friction roller, the two sections rack in the bottom of described loam cake and backstage are fixedly connected with, middle part at loam cake is provided with handwheel from top to bottom, screw rod, hydraulic cylinder and upper friction roller, described handwheel is fixedly connected with an end of screw rod, be provided with nut at screw rod, described screw rod is connected with nut thread, the other end of described screw rod is fixedly connected with the piston rod of hydraulic cylinder, the bottom of described hydraulic cylinder is fixedly connected with bearing block, bottom at the middle part of bearing block is provided with axle, is provided with friction roller on the axle.
Top roller device on the described push rod pre-rotation is fixedly installed upper cover plate on the top of loam cake, and described nut is arranged on the bottom at upper cover plate middle part, and described nut is fixedly connected with upper cover plate.
Top roller device on the described push rod pre-rotation is provided with dust cover between handwheel and upper cover plate, described dust cover is fixedly connected with upper cover plate.
Top roller device on the described push rod pre-rotation, the end face of the other end of described screw rod is set to hemisphere face, and the hemisphere face of described screw rod is connected with hydraulic cylinder by half clamp, and described half clamp is fixedly connected with hydraulic cylinder.
Top roller device on the described push rod pre-rotation is fixedly installed axle in the bottom at the middle part of bearing block, is provided with friction roller at the periphery of axle, is provided with bearing between axle and upper friction roller, and described axle and upper friction roller are rotationally connected.
Top roller device on the described push rod pre-rotation is respectively arranged with a spring in the both sides of screw rod, and described spring is arranged on the inside of spring housing.
Top roller device on the described push rod pre-rotation, outer setting at spring has spring housing, the top of described spring housing is fixedly connected with upper cover plate, and the center of passing spring is provided with a screw, and described screw passes the center of spring and the bottom of spring housing is threaded with bearing block.
Top roller device on the described push rod pre-rotation, covering between the inwall of bearing block and loam cake is fixedly installed slide plate, and described bearing block can slide up and down along slide plate.
Owing to adopt aforesaid technical scheme, the utlity model has following beneficial effect:
Top roller device on the push rod pre-rotation described in the utility model adopts a screw rod transmitting torque, has avoided two asynchronous screw deadlockings that cause of screw speed; Screw rod domed ends allowable load has certain inclination angle, also can not cause screw deadlocking; Be provided with at least two springs that pretightning force is provided in the screw rod both sides, reduce the load impacting that cause in the screw flight gap; Push rod is after beginning rotation under the effect of pipe moment of friction, hydraulic cylinder moves, and the fast lifting friction roller is realized automation.
[description of drawings]
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the B-B cutaway view of Fig. 1;
In the drawings: 1, loam cake; 2, nut; 3, upper cover plate; 4, handwheel; 5, dust cover; 6, screw rod; 7, half clamp; 8, hydraulic cylinder; 9, bearing block assembling; 10, upper friction roller; 11, axle; 12, slide plate; 13, spring; 14, two sections rack in backstage; 15, spring housing; 16, screw.
[specific embodiment]
Can explain in more detail the present invention by the following examples, open the purpose of this utility model is intended to protect all changes and improvements in the utility model scope, and the utility model is not limited to the following examples.
Top roller device on 1～2 described push rod pre-rotation by reference to the accompanying drawings, comprise loam cake 1, handwheel 4, screw rod 6, hydraulic cylinder 8 and upper friction roller 10, the two sections rack 14 in the bottom of described loam cake 1 and backstage are fixedly connected with, be provided with from top to bottom handwheel 4, screw rod 6, hydraulic cylinder 8 and upper friction roller 10 at the middle part of loam cake 1, be provided with dust cover 5 between handwheel 4 and upper cover plate 3, described dust cover 5 is fixedly connected with upper cover plate 3; Described handwheel 4 is fixedly connected with an end of screw rod 6, is provided with nut 2 at screw rod 6, is fixedly installed upper cover plate 3 on the top of loam cake 1, and described nut 2 is arranged on the bottom at upper cover plate 3 middle parts, and described nut 2 is fixedly connected with upper cover plate 3; Described screw rod 6 is threaded with nut 2, the other end of described screw rod 6 is fixedly connected with the piston rod of hydraulic cylinder 8, the end face of the other end of described screw rod 6 is set to hemisphere face, and the hemisphere face of described screw rod 6 is connected with hydraulic cylinder 8 by half clamp 7, and described half clamp 7 is fixedly connected with hydraulic cylinder 8; The bottom of described hydraulic cylinder 8 is fixedly connected with bearing block 9, bottom at the middle part of bearing block 9 is fixedly installed axle 11, be provided with friction roller 10 at the periphery of axle 11, be provided with bearing between axle 11 and upper friction roller 10, described axle 11 is rotationally connected with upper friction roller 10; Be respectively arranged with a spring 13 in the both sides of screw rod 6, described spring 13 is arranged on the inside of spring housing 15; Outer setting at spring 13 has spring housing 15, and the top of described spring housing 15 is fixedly connected with upper cover plate 3, and the center of passing spring 13 is provided with a screw 16, and described screw 16 passes the center of spring 13 and the bottom of spring housing is threaded with bearing block 9; Loam cake 1 between the inwall of bearing block 9 and loam cake 1 is fixedly installed slide plate 12, and described bearing block 9 can slide up and down along slide plate 12.
Implement top roller device on the push rod pre-rotation described in the utility model, pipe according to rolling different size, rotation hand wheel 4 drives screw rod 6 and rotates with respect to nut 2, realize that screw rod 6 moves up and down, screw rod 6 is connected by half clamp 7 with hydraulic cylinder 8, after stretching out, hydraulic cylinder 8 total travels can be used as buffer element, absorb the impact of circle swing under the push rod duty, hydraulic cylinder 8 drives bearing block 9 and slides up and down along slide plate 12, friction roller 10 moves up and down in the realization, make the position of friction roller 10 obtain accurate adjustment and location, friction roller 10 can freely rotate around axle 11; Upper friction roller 10 is positioning datums of three friction rollers in the pre-rotation apparatus, when push rod and pipe Contact, upper friction roller 10 and other two friction rollers in the pre-rotation apparatus clamp push rod at roll line, and under the effect of two active friction rollers, the frictionally square drives push rod and realizes pre-rotation; Push rod is after beginning rotation under the effect of pipe moment of friction, hydraulic cylinder 8 effects, upper friction roller 10 lifts fast, prevent that push rod in the perforation procedure from radially wobbling top roller device on the impact failure push rod pre-rotation of generation, prevent that simultaneously upward friction roller 10 scratch push rods were surperficial when push rod from returning, and realized automation.
The load impacting that causes for reducing screw rod 6 thread pitches strengthens the ability of being hit of the present utility model, is provided with two springs 13 that pretightning force is provided in screw rod 6 both sides; Screw rod 6 is connected by half clamp 7 with hydraulic cylinder 8, screw rod 6 domed ends allowable loads have certain inclination angle, make the following part of screw rod can transmit the load that low-angle departs from the screw rod center, prevent hydraulic cylinder 8 stuck phenomena, also can not cause the stuck of screw rod 6 simultaneously; Hydraulic cylinder 8 can bear the load impacting of push rod circumferencial direction in three friction roller position fixing process and the pre-rotation process; The utility model is simple to operate, and compact conformation is beneficial to the realization automation, and provides precondition for the push rod pre-rotation.
The utility model does not describe part in detail and is prior art.
The embodiment that selects in this article for open the purpose of this utility model currently thinks to suit, but will be appreciated that, the utility model is intended to comprise that all belong to all changes and the improvement of the interior embodiment of this design and the utility model scope.
Claims (1)
1. top roller device on the push rod pre-rotation, comprise loam cake (1), handwheel (4), screw rod (6), hydraulic cylinder (8) and upper friction roller (10), it is characterized in that: the bottom of described loam cake (1) is fixedly connected with the two sections rack in backstage (14), be provided with from top to bottom handwheel (4) at the middle part of loam cake (1), screw rod (6), hydraulic cylinder (8) and upper friction roller (10), described handwheel (4) is fixedly connected with an end of screw rod (6), be provided with nut (2) at screw rod (6), described screw rod (6) is threaded with nut (2), the other end of described screw rod (6) is fixedly connected with the piston rod of hydraulic cylinder (8), the bottom of described hydraulic cylinder (8) is fixedly connected with bearing block (9), bottom at the middle part of bearing block (9) is provided with axle (11), is provided with friction roller (10) on the axle (11).
2, top roller device on the push rod pre-rotation according to claim 1, it is characterized in that: be fixedly installed upper cover plate (3) on the top of loam cake (1), described nut (2) is arranged on the bottom at upper cover plate (3) middle part, and described nut (2) is fixedly connected with upper cover plate (3).
3, top roller device on the push rod pre-rotation according to claim 1, it is characterized in that: be fixedly installed upper cover plate (3) on the top of loam cake (1), be provided with dust cover (5) between handwheel (4) and upper cover plate (3), described dust cover (5) is fixedly connected with upper cover plate (3).
4, top roller device on the push rod pre-rotation according to claim 1, it is characterized in that: the end face of the other end of described screw rod (6) is set to hemisphere face, the hemisphere face of described screw rod (6) is connected with hydraulic cylinder (8) by half clamp (7), and described half clamp (7) is fixedly connected with hydraulic cylinder (8).
5, top roller device on the push rod pre-rotation according to claim 1, it is characterized in that: the bottom at the middle part of bearing block (9) is fixedly installed axle (11), periphery at axle (11) is provided with upper friction roller (10), be provided with bearing between axle (11) and upper friction roller (10), described axle (11) is rotationally connected with upper friction roller (10).
6, top roller device on the push rod pre-rotation according to claim 1 is characterized in that: be respectively arranged with a spring (13) in the both sides of screw rod (6), described spring (13) is arranged on the inside of spring housing (15).
7, top roller device on the push rod pre-rotation according to claim 6, it is characterized in that: the outer setting at spring (13) has spring housing (15), the top of described spring housing (15) is fixedly connected with upper cover plate (3), the center of passing spring (13) is provided with a screw (16), and described screw (16) passes the center of spring (13) and the bottom of spring housing is threaded with bearing block (9).
8, top roller device on the push rod pre-rotation according to claim 1 is characterized in that: the loam cake (1) between the inwall of bearing block (9) and loam cake (1) is fixedly installed slide plate (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220205685 CN202803750U (en) | 2012-05-09 | 2012-05-09 | Upper ejector roller for pre-rotation of ejector rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220205685 CN202803750U (en) | 2012-05-09 | 2012-05-09 | Upper ejector roller for pre-rotation of ejector rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202803750U true CN202803750U (en) | 2013-03-20 |
Family
ID=47862695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220205685 Expired - Fee Related CN202803750U (en) | 2012-05-09 | 2012-05-09 | Upper ejector roller for pre-rotation of ejector rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202803750U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106925688A (en) * | 2015-12-29 | 2017-07-07 | (株)星宇Hitech | Form the roll forming apparatus of variable thickness plate |
| CN109546075A (en) * | 2018-10-24 | 2019-03-29 | 超威电源有限公司 | A kind of chloride plate coated plate press roll component |
| CN111098068A (en) * | 2018-10-29 | 2020-05-05 | 湖北三江航天红阳机电有限公司 | Welding gun clamping mechanism |
-
2012
- 2012-05-09 CN CN 201220205685 patent/CN202803750U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106925688A (en) * | 2015-12-29 | 2017-07-07 | (株)星宇Hitech | Form the roll forming apparatus of variable thickness plate |
| CN109546075A (en) * | 2018-10-24 | 2019-03-29 | 超威电源有限公司 | A kind of chloride plate coated plate press roll component |
| CN111098068A (en) * | 2018-10-29 | 2020-05-05 | 湖北三江航天红阳机电有限公司 | Welding gun clamping mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20200509 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |