CN210172246U - Flat roll quick die changing device of welded pipe unit - Google Patents
Flat roll quick die changing device of welded pipe unit Download PDFInfo
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- CN210172246U CN210172246U CN201920969422.8U CN201920969422U CN210172246U CN 210172246 U CN210172246 U CN 210172246U CN 201920969422 U CN201920969422 U CN 201920969422U CN 210172246 U CN210172246 U CN 210172246U
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Abstract
The utility model relates to a flat roll quick die change device of a welded pipe unit, wherein the middle parts of an upper roller and a lower roller are provided with an upper die and a lower die, the left end and the right end of the upper roller and the lower roller are respectively supported in an upper roller bearing seat and a lower roller bearing seat, the bottoms of two roller portal frames are both fixed on a common base, and the upper roller and the lower roller are connected with an upper transmission shaft and a lower transmission shaft through an upper coupling and a lower coupling; the middle parts of the upper and lower couplers are respectively supported in bearing seats of the upper and lower couplers, the bearing seat of the lower coupler is positioned at the bottom of the coupler portal frame, and the bearing seat of the upper coupler is positioned at the upper part of the coupler portal frame; the upper coupler bearing block can slide up and down along a guide groove of a coupler portal frame, a lifting adjusting cylinder is fixed at the center of the top of the coupler portal frame, and the lower end of a piston rod of the lifting adjusting cylinder is hinged with the top of the upper coupler bearing block; the driving ends of the upper and lower shaft couplings are respectively connected with the output ends of the upper and lower transmission shafts through universal joints. The device can greatly improve the die change efficiency and the assembly precision after die change.
Description
Technical Field
The utility model relates to a welded tube unit, in particular to quick retooling device of plain-barreled roll of welded tube unit belongs to welded tube and makes auxiliary assembly technical field.
Background
The straight seam high-frequency welded steel pipe is formed by welding steel strips in a curling mode, the width of each steel strip is equal to the circumference of the steel pipe, the steel strips are placed on an uncoiler to be uncoiled and uncoiled, then the steel strips are coiled into a circular shape in a cold rolling mode, the pipe seams are welded through high-frequency induction heating to obtain welded steel pipes, the welded steel pipes are shaped and sized through sizing rollers and then rolled into circular pipes of various specifications, and the welded steel pipes can be cut into required lengths according to requirements. The special pipe can be realized by exchanging various rollers with different specifications.
In the process of cold rolling and coiling the steel strip into a circular shape, the steel strip needs to be rolled by a plurality of flat roll devices and vertical roll devices alternately. The flat roll device comprises an upper roll and a lower roll which are respectively driven by a transmission shaft, the axes of the upper roll and the lower roll are horizontal and parallel to each other, the middle parts of the upper roll and the lower roll are provided with an upper die and a lower die which are matched with each other, the left end and the right end of the upper roll and the lower roll are respectively supported in an upper roll bearing seat and a lower roll bearing seat, the lower roll bearing seats at the two ends of the lower roll are respectively and fixedly arranged at the bottom of the roll portal frame, the upper roll bearing seats at the two ends of the upper roll are respectively positioned at the upper part of the roll portal frame, and when a steel pipe passes through a.
In the same way, the vertical roll device comprises a front roll and a rear roll, wherein a front die and a rear die which are matched with each other are arranged in the middle of the front roll and the rear roll, and a steel pipe is shaped in the other direction when passing through a rolling round hole formed by surrounding the front die and the rear die. In the advancing process, the steel pipe is alternately shaped by rolling of the upper die, the lower die and the front die and the rear die, and the roundness is higher and higher.
When processing the steel pipe of different diameters, need to change the mould and the lower mould of different specifications. When the mold of the flat roll device is replaced, the roller portal frame positioned on the outer side needs to be completely disassembled, the old mold is disassembled from the upper roller and the lower roller, and after the new mold is sleeved on the upper roller and the lower roller, the bearing blocks on the outer side, the roller portal frame and the axial positioning device of the mold need to be installed again. After installation, the levelness and the parallelism of the upper roller and the lower roller, the distance between the upper die and the lower die, and the like need to be corrected again, a large amount of labor and time are needed, and the production efficiency is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the problem that exists among the prior art, provide a welded tube unit's quick retooling device of plain-barreled roll, can increase substantially retooling efficiency to and the assembly precision after the retooling, improve product quality.
In order to solve the technical problem, the utility model discloses a flat roll quick die change device of welded tube unit, include top roll and the bottom roll driven respectively by the transmission shaft, the axis level of top roll and bottom roll is just parallel to each other, the middle part of top roll and bottom roll is installed upper and lower mould of mating each other, the left and right both ends of top roll and bottom roll support respectively in upper and lower roll chock, the bottom roll chock at bottom roll both ends is fixed mounting respectively in the bottom of roll portal frame, the top roll chock at top roll both ends is located respectively the upper portion of roll portal frame, the bottom of two roll portal frames is all fixed on the common base of roll portal frame, the drive end of top roll links to each other with last transmission shaft through the upper shaft coupling, the drive end of bottom roll links to each other with the bottom shaft through the lower shaft coupling; the middle parts of the upper and lower couplers are respectively supported in bearing seats of the upper and lower couplers, the bearing seat of the lower coupler is fixedly arranged at the bottom of the coupler portal frame, and the bearing seat of the upper coupler is fixedly arranged at the upper part of the coupler portal frame; the upper coupler bearing block can slide up and down along a guide groove of a coupler portal frame, a lifting adjusting cylinder is fixed at the center of the top of the coupler portal frame, and the lower end of a piston rod of the lifting adjusting cylinder is hinged with the center of the top of the upper coupler bearing block; the driving ends of the upper and lower shaft couplings are respectively connected with the output ends of the upper and lower transmission shafts through upper and lower universal joints.
Compared with the prior art, the utility model discloses following beneficial effect has been obtained: the method comprises the steps of respectively installing moulds with different specifications on an upper roller and a lower roller which are matched, fixing the bottoms of two roller portal frames on a common base of the roller portal frames, and replacing the moulds integrally without detaching the moulds from the upper roller and the lower roller. When the mold is changed, the fixing screws of the common base of the roller portal frame and the rack are removed, the common base of the roller portal frame is translated outwards, so that the driving end of the upper roller can be separated from the upper coupler, and the driving end of the lower roller can be separated from the lower coupler. The new upper and lower rollers and the dies thereon are hoisted to the frame along with the common base of the roller portal frame and then are pushed to the left side, and the upper roller, the upper coupler, the lower roller and the lower coupler are reconnected to complete the reloading, thereby greatly reducing the workload of dismounting and correcting. After the common base of the roller portal frame falls on the frame, the lower shaft coupling and the lower rollers of all the dies are in the same height, so that the coaxial line can be realized; the piston rod of the lifting adjusting cylinder can pull the upper coupler bearing seat to slide up and down along the guide groove of the coupler portal frame so as to adjust the height of the upper coupler, so that the upper coupler and the upper roller can be coaxially connected, and the connection can be realized. The coupling portal frame can be matched with rollers of all molds.
As the improvement of the utility model, the driving ends of the upper and lower rollers are respectively provided with the spline conical heads of the upper and lower rollers, and the spline conical heads of the upper and lower rollers are correspondingly inserted into the spline holes of the upper and lower couplers. The spline conical head is conveniently inserted into a spline hole of the coupler, and torque can be transmitted after the insertion is completed.
As a further improvement, the base of shaft coupling portal frame supports on the shaft coupling portal frame guide rail that extends along left right direction, the left side of shaft coupling portal frame is equipped with the translation cylinder, the piston rod right-hand member of translation cylinder with shaft coupling portal frame base links to each other, translation cylinder and shaft coupling portal frame guide rail are all fixed in the frame. The left side of the coupler is disconnected from the transmission shaft, the piston rod of the translation cylinder extends out to push the base of the coupler portal frame to translate rightwards along the guide rail of the coupler portal frame, and the spline holes of the upper coupler and the lower coupler are correspondingly sleeved on the spline conical heads of the upper roller and the lower roller, so that the coupler is connected with the horizontal roller.
As a further improvement of the utility model, the front side and the rear side of the left end cover of the upper roll bearing block are respectively connected with an upper roll guide rod horizontally extending to the left side, and the tail end of the upper roll guide rod is respectively provided with an upper roll guide wheel; and the front side and the rear side of the upper coupler are respectively provided with an upper coupler positioning rod which horizontally extends rightwards, and when the bottom surface of the upper coupler positioning rod is pressed on the top of the upper roller guide wheel, the upper coupler and the upper roller have the same height on the axis. When the height of the upper coupler is adjusted, whether the height of the upper coupler is equal to that of the upper roller or not is inconvenient to observe, after the upper roller guide wheel and the upper coupler positioning rod are arranged, before the upper coupler is inserted into the upper roller, the upper coupler positioning rod is pressed on the upper roller guide wheel, the height of the axis of the upper coupler and the axis of the upper roller is ensured to be equal to that of the upper coupler, and when the coupler portal frame translates rightwards, the upper coupler positioning rod is pressed on the upper roller guide wheel to move forwards, so that the upper coupler and the upper roller can be smoothly inserted into each.
As a further improvement of the utility model, the upper and lower transmission shafts are driven by a gear reduction box, the gear reduction box is internally provided with an upper output shaft and a lower output shaft which are parallel to each other, and the outer ends of the upper and lower output shafts are respectively connected with the input ends of the upper and lower transmission shafts through an upper universal joint and a lower universal joint; the middle sections of the upper output shaft and the lower output shaft are provided with an upper cylindrical gear and a lower cylindrical gear which are meshed with each other, the inner end head of the lower output shaft is provided with a driven bevel gear, and the driven bevel gear is meshed with the driving bevel gear. The driving bevel gear drives the driven bevel gear to rotate, the driven bevel gear drives the lower output shaft and the lower cylindrical gear to rotate, the lower cylindrical gear drives the upper cylindrical gear to rotate, and the upper cylindrical gear drives the upper output shaft to rotate, so that the upper output shaft and the lower output shaft drive the upper transmission shaft and the lower transmission shaft to synchronously rotate in opposite directions; the upper transmission shaft and the lower transmission shaft drive the upper roller and the lower roller to synchronously rotate in opposite directions through the coupler.
As a further improvement, the left side of the common base of the roller portal frame is provided with a positioning backer, which is fixed on the frame. The arrangement of the positioning backer facilitates quick positioning and installation of the common base of the roller portal frame, and further improves the efficiency of die change.
As a further improvement, the top roll bearing seat can slide from top to bottom along the guide slot of roll portal frame respectively, the top center of roll portal frame is fixed with the worm gear case respectively, be equipped with intermeshing's worm wheel and worm in the worm gear case respectively, it has adjusting screw to connect soon respectively in the central screw of worm wheel, two adjusting screw's lower extreme respectively with the top of top roll bearing seat is articulated mutually, and two worms are located on the same axis and through worm spline cover interconnect between two worms, and adjusting hand wheel is installed to the free end of one of them worm. The worm spline sleeve ensures that the two worms synchronously rotate, the adjusting hand wheel is rotated, the adjusting hand wheel drives the two worms to synchronously rotate, the two worms respectively drive the two worm wheels to synchronously rotate, and the central screw holes of the two worm wheels respectively drive the two adjusting screw rods to ascend and descend by the same height, so that the same height for ascending and descending at the two ends of the upper roller is realized, the axis of the upper roller is always kept in a horizontal state when the height is adjusted, the phenomenon that the two ends of the upper roller are respectively adjusted in height to cause inclination is avoided, and the adjusting and correcting time of the upper roller is greatly shortened.
As a further improvement of the utility model, the left sides of the upper and lower dies are respectively abutted against positioning nuts which are respectively screwed on the left sides of the upper and lower roller die mounting sections; the right sides of the upper die and the lower die are respectively abutted against the left end turnup of the positioning sleeve, an upper roller bearing and a lower roller bearing of the right roller portal frame are respectively sleeved on the periphery of the corresponding positioning sleeve, the right ends of the upper roller and the lower roller are respectively screwed with a locking nut, and the left end face of the locking nut is respectively abutted against the right end of the corresponding positioning sleeve. The mould realizes radial positioning on the roller by a flat key, and the two ends of the mould realize axial positioning by a positioning nut and a positioning sleeve. When the mold is changed, the mold is withdrawn to the right side, so that the left side of the mold is positioned by adopting the positioning nut, the adjustment is convenient, and the threads cannot be scratched by the mold during the mold change. Because the bearing on the right side needs to be frequently dismantled, the damage that causes roll bearing installation section easily makes the cooperation precision descend, adorns the bearing on the right side on the position sleeve, greatly reduced the processing degree of difficulty and the heat treatment requirement of roll, the position sleeve damages or needs to change length, and processing is easy, and the replacement cost is very low, and the right-hand member of position sleeve relies on lock nut to fix a position. The diameter of the thread at the right end of the roller is far smaller than the diameters of the inner holes of the positioning sleeve and the die, so that the thread is not easy to damage during disassembly.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description, which are provided for reference and illustration purposes only and are not intended to limit the invention.
Fig. 1 is a front view of the flat roll rapid die changing device of the welded pipe unit of the present invention.
Fig. 2 is an enlarged view of the flat roll device of fig. 1.
FIG. 3 is a front view of another gauge flat roll device.
Fig. 4 is a left side view of fig. 3.
Fig. 5 is a top view of fig. 3 with the worm gear box removed.
In the figure: 1. a gear reduction box; 1a, a driving bevel gear; 1b, a driven bevel gear; 1c, a lower output shaft; 1d, a lower cylindrical gear; 1e, mounting a cylindrical gear; 1f, an upper output shaft; 2a, a lower transmission shaft; 2a1. lower gimbal one; 2a2. a lower universal joint II; 2b, an upper transmission shaft; 2b1, an upper universal joint I; 2b2. upper gimbal two; 3. a coupling gantry; 3a, a lower coupling; 3a1. lower coupling bearing seat; 3b, an upper coupler; 3b1, an upper coupler bearing seat; 3b2. lifting adjusting cylinder; 3c, coupling gantry guide rails; 3d, translating the air cylinder; 4. a roller portal frame; 4a, rolling a lower roller; 4a1. lower roll spline taper head; 4a2. a lower roll chock; 4a3. lower die; 4b, upper rolling; 4b1, mounting a spline conical head of the roller; 4b2. upper roll chock; 4b3. upper die; 4c, a common base of the roller portal frame; 4d, positioning the backer; 4e, an upper roller guide rod; 4f, an upper roller guide wheel; 5. a worm gear box; 5a, a worm gear; 5b, adjusting a screw rod; 5c, a worm; 5d, a worm spline sleeve; 5e, adjusting a hand wheel; 5f, screw rod sheath; 6. positioning a nut; 7. a positioning sleeve; 8. and locking the nut.
Detailed Description
As shown in fig. 1, the utility model discloses quick retooling device of plain barreled roll of welded tube unit includes top roll 4b and lower roll 4a driven respectively by the transmission shaft, top roll 4b and lower roll 4 a's axis level and parallel to each other, top roll 4 b's mid-mounting has last mould 4b3, lower roll 4 a's mid-mounting matches lower mould 4a3 with last mould 4b3, top roll 4b supports in top roll chock 4b2 at both ends about, both ends support in lower roll chock 4a2 about lower roll 4a, the lower roll chock 4a2 at lower roll 4a both ends is fixed mounting respectively in the bottom of roll portal frame 4, the top roll chock 4b2 at top roll portal frame 4b both ends is located the upper portion of roll portal frame 4 respectively, the bottom of two roll portal frames 4 is all fixed on the common base 4c of roll portal frame.
The driving end of the upper roller 4b is connected with the upper transmission shaft 2b through an upper coupler 3b, and the driving end of the lower roller 4a is connected with the lower transmission shaft 2a through a lower coupler 3 a; the middle part of the upper coupler 3b is supported in an upper coupler bearing seat 3b1, the middle part of the lower coupler 3a is supported in a lower coupler bearing seat 3a1, the lower coupler bearing seat 3a1 is fixedly installed at the bottom of the coupler portal frame 3, and the upper coupler bearing seat 3b1 is fixedly installed at the upper part of the coupler portal frame 3.
The upper coupler bearing seat 3b1 can slide up and down along a guide groove of the coupler portal frame 3, a lifting adjusting cylinder 3b2 is fixed at the center of the top of the coupler portal frame 3, and the lower end of a piston rod of the lifting adjusting cylinder 3b2 is hinged with the center of the top of the upper coupler bearing seat 3b 1; the driving end of the upper coupling 3b is connected with the output end of the upper transmission shaft 2b through an upper second universal joint 2b2, and the driving end of the lower coupling 3a is connected with the output end of the lower transmission shaft 2a through a lower second universal joint 2a2.
The driving end of the upper roller 4b is provided with an upper roller spline cone 4b1, and the driving end of the lower roller 4a is provided with a lower roller spline cone 4a 1; the upper roll spline cone 4b1 is inserted into the spline hole of the upper coupling 3b and the lower roll spline cone 4a1 is inserted into the spline hole of the lower coupling 3a. The spline conical head is conveniently inserted into a spline hole of the coupler, and torque can be transmitted after the insertion is completed.
The moulds with different specifications are respectively arranged on an upper roller 4b and a lower roller 4a which are matched, then the bottoms of two roller portal frames 4 are fixed on a common base 4c of the roller portal frames, and the moulds are not detached from the upper roller 4b and the lower roller 4a any more, but are replaced integrally. When the mold is changed, the fixing screws of the common base 4c of the roller portal frame and the frame are removed, the common base 4c of the roller portal frame is translated outwards, so that the driving end of the upper roller 4b is separated from the upper coupler 3b, and the driving end of the lower roller 4a is separated from the lower coupler 3a. After the new upper roller 4b, the new lower roller 4a and the new dies on the upper roller are hoisted to the frame along with the common base 4c of the roller portal frame, the new upper roller and the new lower roller are pushed to the left side, the upper roller 4b and the upper coupler 3b are connected, and the new lower roller and the new lower coupler 3a are reconnected to complete the replacement, so that the disassembly and assembly and the correction workload are greatly reduced. After the common base 4c of the roller portal frame falls on the frame, the lower shaft coupling 3a and the lower rollers 4a of each die are consistent in height, so that the coaxial line can be realized; the piston rod of the lifting adjusting cylinder 3b2 can pull the upper coupler bearing seat 3b1 to slide up and down along the guide groove of the coupler portal frame 3 so as to adjust the height of the upper coupler 3b, so that the upper coupler 3b and the upper roller 4b are coaxial and can be connected. The coupling portal frame 3 can be matched with rollers of all molds.
The base of the coupler portal frame 3 is supported on a coupler portal frame guide rail 3c extending along the left-right direction, a translation cylinder 3d is arranged on the left side of the coupler portal frame 3, the right end of a piston rod of the translation cylinder 3d is connected with the coupler portal frame base, and the translation cylinder 3d and the coupler portal frame guide rail 3c are fixed on the rack. The left side of the coupler is disconnected from the transmission shaft, the piston rod of the translation cylinder 3d extends out to push the base of the coupler portal frame to translate rightwards along the guide rail 3c of the coupler portal frame, and the spline holes of the upper coupler 3b and the lower coupler 3a are correspondingly sleeved on the spline conical head 4b1 of the upper roller and the spline conical head 4a1 of the lower roller, so that the coupler is connected with the horizontal roller.
The front side and the rear side of the left end cover of the upper roller bearing block 4b2 are respectively connected with an upper roller guide rod 4e which horizontally extends towards the left side, and the tail end of the upper roller guide rod 4e is respectively provided with an upper roller guide wheel 4 f; and the front side and the rear side of the upper coupler 3b are respectively provided with an upper coupler positioning rod which horizontally extends rightwards, and when the bottom surface of the upper coupler positioning rod is pressed on the top of the upper roller guide wheel 4f, the upper coupler 3b and the upper roller 4b are equal in height. When the height of the upper coupler 3b is adjusted, whether the height of the upper coupler 3b is equal to that of the upper roller 4b or not is inconvenient to observe, after the upper roller guide wheel 4f and the upper coupler positioning rod are arranged, before the upper coupler 3b is inserted into the upper roller 4b, when the upper coupler positioning rod is pressed on the upper roller guide wheel 4f, the height of the upper coupler 3b and the upper roller 4b is ensured to be equal to that of the axis, when the coupler portal frame 3 translates rightwards, the upper coupler positioning rod is pressed on the upper roller guide wheel 4f to move forwards, and the insertion of the upper coupler 3b and the upper roller 4b can be smoothly completed.
The upper transmission shaft 2b and the lower transmission shaft 2a are driven by the gear reduction box 1, an upper output shaft 1f and a lower output shaft 1c which are parallel to each other are arranged in the gear reduction box 1, the outer end of the upper output shaft 1f is connected with the input end of the upper transmission shaft 2b through an upper universal joint I2 b1, and the outer end of the lower output shaft 1c is connected with the input end of the lower transmission shaft 2a through a lower universal joint I2 a 1; an upper cylindrical gear 1e is arranged in the middle section of the upper output shaft 1f, a lower cylindrical gear 1d is arranged in the middle section of the lower output shaft 1c, the upper cylindrical gear 1e and the lower cylindrical gear 1d are meshed with each other, a driven bevel gear 1b is arranged at the inner end of the lower output shaft 1c, and the driven bevel gear 1b is meshed with the driving bevel gear 1a. The driving bevel gear 1a drives the driven bevel gear 1b to rotate, the driven bevel gear 1b drives the lower output shaft 1c and the lower cylindrical gear 1d to rotate, the lower cylindrical gear 1d drives the upper cylindrical gear 1e to rotate, and the upper cylindrical gear 1e drives the upper output shaft 1f to rotate, so that the upper output shaft 1f and the lower output shaft 1c drive the upper transmission shaft 2b and the lower transmission shaft 2a to synchronously rotate in opposite directions; the upper transmission shaft 2b and the lower transmission shaft 2a drive the upper roller 4b and the lower roller 4a to synchronously rotate in opposite directions through a coupler.
And a positioning backer 4d is arranged on the left side of the common base 4c of the roller portal frame, and the positioning backer 4d is fixed on the rack. The arrangement of the positioning backer 4d facilitates quick positioning and installation of the common base 4c of the roller portal frame, and further improves the efficiency of die replacement.
The upper roll bearing blocks 4b2 can respectively slide up and down along the guide grooves of the roll portal frame 4, the top center of the roll portal frame 4 is respectively fixed with a worm and gear box 5, the worm and gear box 5 is respectively provided with a worm wheel 5a and a worm 5c which are meshed with each other, the central screw holes of the worm wheel 5a are respectively screwed with adjusting screws 5b, the lower ends of the two adjusting screws 5b are respectively hinged with the top of the upper roll bearing block 4b2, the two worms 5c are positioned on the same axis and are mutually connected through a worm spline sleeve 5d, and the free end of one worm 5c is provided with an adjusting hand wheel 5e.
The worm spline sleeve 5d ensures that the two worms 5c synchronously rotate, the adjusting hand wheel 5e is rotated, the adjusting hand wheel 5e drives the two worms 5c to synchronously rotate, the two worms 5c respectively drive the two worm wheels 5a to synchronously rotate, and the central screw holes of the two worm wheels 5a respectively drive the two adjusting screw rods 5b to ascend and descend by the same height, so that the two ends of the upper roller 4b ascend and descend by the same height, the axis of the upper roller 4b is always kept in a horizontal state when the height is adjusted, the phenomenon that the two ends of the upper roller 4b are respectively adjusted in height to cause inclination is avoided, and the adjusting and correcting time of the upper roller 4b is greatly shortened. The top of the worm gear box 5 is provided with a screw rod sheath 5f for accommodating the adjusting screw rod 5b, so that dust pollution is prevented.
The left sides of the upper die 4b3 and the lower die 4a3 respectively abut against positioning nuts 6, and the positioning nuts 6 are respectively screwed on the left sides of the upper and lower roller die mounting sections; the right sides of the upper die 4b3 and the lower die 4a3 respectively abut against a flanging at the left end of the positioning sleeve 7, an upper roller bearing and a lower roller bearing of the right roller portal frame 4 are respectively sleeved on the periphery of the corresponding positioning sleeve 7, the right ends of the upper roller 4b and the lower roller 4a are respectively screwed with a locking nut 8, and the left end face of the locking nut 8 abuts against the right end of the corresponding positioning sleeve 7.
The mould realizes radial positioning on the roller by a flat key, and the two ends of the mould realize axial positioning by a positioning nut 6 and a positioning sleeve 7. When the mold is changed, the mold is withdrawn to the right side, so that the left side of the mold is positioned by the positioning nut 6, the adjustment is convenient, and the threads cannot be scratched by the mold during the mold change. Because the bearing on right side needs often to be dismantled, causes the damage of roll bearing installation section easily and makes the cooperation precision descend, adorns right side bearing on position sleeve 7, greatly reduced the processing degree of difficulty and the heat treatment requirement of roll, position sleeve 7 damages or needs to change length, and processing is easy, and the replacement cost is very low, and the right-hand member of position sleeve 7 relies on lock nut 8 to fix a position. The diameter of the screw thread at the right end of the roller is far smaller than the inner hole diameters of the positioning sleeve 7 and the die, so that the screw thread is not easily damaged during disassembly.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention. In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention. The undescribed technical features of the present invention can be realized by or using the prior art, and are not described herein again.
Claims (8)
1. The utility model provides a quick die change device of plain-barreled roll of welded tube unit, includes top roll and the lower roll of being driven respectively by the transmission shaft, the axis level of top roll and lower roll just is parallel to each other, the mid-mounting of top roll and lower roll has upper and lower mould of mating each other, both ends support respectively in upper and lower roll chock about top roll and lower roll, the lower roll chock at lower roll both ends is fixed mounting respectively in the bottom of roll portal frame, the top roll chock at top roll both ends is located respectively the upper portion of roll portal frame, its characterized in that: the bottom parts of the two roller portal frames are fixed on a common base of the roller portal frames, the driving end of the upper roller is connected with the upper transmission shaft through an upper coupler, and the driving end of the lower roller is connected with the lower transmission shaft through a lower coupler; the middle parts of the upper and lower couplers are respectively supported in bearing seats of the upper and lower couplers, the bearing seat of the lower coupler is fixedly arranged at the bottom of the coupler portal frame, and the bearing seat of the upper coupler is fixedly arranged at the upper part of the coupler portal frame; the upper coupler bearing block can slide up and down along a guide groove of a coupler portal frame, a lifting adjusting cylinder is fixed at the center of the top of the coupler portal frame, and the lower end of a piston rod of the lifting adjusting cylinder is hinged with the center of the top of the upper coupler bearing block; the driving ends of the upper and lower shaft couplings are respectively connected with the output ends of the upper and lower transmission shafts through upper and lower universal joints.
2. The flat roll rapid die changing device of the welded pipe unit according to claim 1, characterized in that: the driving ends of the upper roller and the lower roller are respectively provided with an upper roller spline conical head and a lower roller spline conical head, and the upper roller spline conical head and the lower roller spline conical head are correspondingly inserted into spline holes of an upper coupling and a lower coupling.
3. The flat roll rapid die changing device of the welded pipe unit according to claim 1, characterized in that: the base of the coupler portal frame is supported on a coupler portal frame guide rail extending along the left-right direction, a translation cylinder is arranged on the left side of the coupler portal frame, the right end of a piston rod of the translation cylinder is connected with the coupler portal frame base, and the translation cylinder and the coupler portal frame guide rail are fixed on the rack.
4. The flat roll rapid die changing device of the welded pipe unit according to claim 1, characterized in that: the front side and the rear side of the left end cover of the upper roll bearing block are respectively connected with an upper roll guide rod horizontally extending towards the left side, and the tail end of the upper roll guide rod is respectively provided with an upper roll guide wheel; and the front side and the rear side of the upper coupler are respectively provided with an upper coupler positioning rod which horizontally extends rightwards, and when the bottom surface of the upper coupler positioning rod is pressed on the top of the upper roller guide wheel, the upper coupler and the upper roller have the same height on the axis.
5. The flat roll rapid die changing device of the welded pipe unit according to claim 1, characterized in that: the upper and lower transmission shafts are driven by a gear reduction box, the gear reduction box is internally provided with an upper output shaft and a lower output shaft which are parallel to each other, and the outer end heads of the upper and lower output shafts are respectively connected with the input ends of the upper and lower transmission shafts through an upper universal joint and a lower universal joint; the middle sections of the upper output shaft and the lower output shaft are provided with an upper cylindrical gear and a lower cylindrical gear which are meshed with each other, the inner end head of the lower output shaft is provided with a driven bevel gear, and the driven bevel gear is meshed with the driving bevel gear.
6. The flat roll rapid die changing device of the welded pipe unit according to claim 1, characterized in that: and a positioning backer is arranged on the left side of the common base of the roller portal frame and fixed on the rack.
7. The flat roll rapid die changing device of the welded pipe unit according to any one of claims 1 to 6, characterized in that: the upper roll bearing blocks can respectively slide up and down along the guide grooves of the roll portal frame, the top centers of the roll portal frames are respectively fixed with a worm and gear box, the worm and gear box is respectively provided with a worm gear and a worm which are meshed with each other, the central screw holes of the worm gear are respectively screwed with adjusting screw rods, the lower ends of the two adjusting screw rods are respectively hinged with the tops of the upper roll bearing blocks, the two worms are positioned on the same axis and are mutually connected through a worm spline sleeve, and the free end of one of the worms is provided with an adjusting hand wheel.
8. The flat roll rapid die changing device of the welded tube unit as claimed in claim 7, wherein: the left sides of the upper die and the lower die are respectively abutted against positioning nuts, and the positioning nuts are respectively screwed on the left sides of the upper roller die mounting section and the lower roller die mounting section; the right sides of the upper die and the lower die are respectively abutted against the left end turnup of the positioning sleeve, an upper roller bearing and a lower roller bearing of the right roller portal frame are respectively sleeved on the periphery of the corresponding positioning sleeve, the right ends of the upper roller and the lower roller are respectively screwed with a locking nut, and the left end face of the locking nut is respectively abutted against the right end of the corresponding positioning sleeve.
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| CN201920969422.8U CN210172246U (en) | 2019-06-26 | 2019-06-26 | Flat roll quick die changing device of welded pipe unit |
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| CN201920969422.8U CN210172246U (en) | 2019-06-26 | 2019-06-26 | Flat roll quick die changing device of welded pipe unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113198870A (en) * | 2021-03-24 | 2021-08-03 | 宁波永享不锈钢管道有限公司 | Nonrust steel pipe forming device and production line thereof |
| CN118635893A (en) * | 2024-08-14 | 2024-09-13 | 佛山市远兴鸿焊管机械模具有限公司 | A high frequency straight seam welded pipe processing and forming device |
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2019
- 2019-06-26 CN CN201920969422.8U patent/CN210172246U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113198870A (en) * | 2021-03-24 | 2021-08-03 | 宁波永享不锈钢管道有限公司 | Nonrust steel pipe forming device and production line thereof |
| CN118635893A (en) * | 2024-08-14 | 2024-09-13 | 佛山市远兴鸿焊管机械模具有限公司 | A high frequency straight seam welded pipe processing and forming device |
| CN118635893B (en) * | 2024-08-14 | 2024-10-29 | 佛山市远兴鸿焊管机械模具有限公司 | A high frequency straight seam welded pipe processing and forming device |
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