CN112404135A - Automatic roll changing rolling mill for pipe rolling and working method - Google Patents
Automatic roll changing rolling mill for pipe rolling and working method Download PDFInfo
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- CN112404135A CN112404135A CN202011099303.5A CN202011099303A CN112404135A CN 112404135 A CN112404135 A CN 112404135A CN 202011099303 A CN202011099303 A CN 202011099303A CN 112404135 A CN112404135 A CN 112404135A
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- 238000005096 rolling process Methods 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 49
- 238000009785 tube rolling Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005098 hot rolling Methods 0.000 description 3
- 238000005097 cold rolling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/12—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially parallel to the axis of the work
- B21B19/14—Rolling tubes by means of additional rollers arranged inside the tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
- B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The embodiment of the invention provides an automatic roll changing rolling mill for rolling a pipe and a working method. The automatic roll-changing rolling mill comprises: the rolling mill comprises a rolling mill body, a push-pull mechanism and a lifting mechanism; the rolling mill body comprises a stand, a first roller and a second roller, wherein the first roller is arranged at the upper part of the stand, and the second roller is arranged at the lower part of the stand; the push-pull mechanism comprises a first driving device and a first tool clamp, and is used for being detachably connected with the end part of the first roller and pulling out or pushing the first roller from or into the rack; the lifting mechanism comprises a second driving device and a second tool clamp, and is detachably connected with the upper portion of the first roller. According to the embodiment of the invention, the horizontal movement of the first roller is controlled by the push-pull mechanism, the lifting movement of the first roller is controlled by the lifting mechanism, and the pipe blank is automatically processed by the first roller and the second roller, so that the manufacturing cost is reduced, the rollers can be quickly and automatically replaced on the premise of realizing the rolling function of the large-caliber pipe, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of pipe processing, in particular to an automatic roll changing mill for pipe rolling and a working method.
Background
At present, the main methods for producing seamless pipes by pipe rolling are hot rolling and cold rolling, the titanium alloy large-caliber pipes are limited by material characteristics, the cold rolling difficulty is extremely high, and the hot rolling technology is generally selected.
A common multipurpose ring rolling mill for rolling large-caliber pipes on the market can enable a ring piece to generate continuous local plastic deformation, further realize a plastic processing process of wall thickness reduction, diameter expansion and section profile forming, but the tonnage of equipment is large, and the cost is overhigh. Therefore, the tube blank is rolled by the tube blank sleeve roller, the tube blank is heated to high temperature by the trolley furnace before processing and discharged from the furnace, the influence of the rolling temperature and the temperature drop is considered, the discharged tube blank needs to be quickly put into a rolling mill for rolling, meanwhile, the tube blank is rolled by the sleeve roller, and the pulling-out mode and the charging mode of the roller and the tube blank need to be considered.
Disclosure of Invention
The embodiment of the invention provides an automatic roll changing rolling mill for rolling a pipe and a working method, which are used for solving the defects of large tonnage, high cost and how to rapidly pull out and load materials caused by a hot rolling processing device in the prior art.
The embodiment of the invention provides an automatic roll changing rolling mill for rolling pipes, which comprises: the rolling mill comprises a rolling mill body, a push-pull mechanism and a lifting mechanism; wherein,
the rolling mill body comprises a rack, a first roller and a second roller, wherein the first roller is arranged at the upper part of the rack, and the second roller is arranged at the lower part of the rack;
the push-pull mechanism comprises a first driving device and a first tool clamp, the first tool clamp is mounted at the movable end of the first driving device and is detachably connected with the end part of the first roller, and the first roller is pulled out of or pushed into the rack;
the lifting mechanism comprises a second driving device and a second tool clamp, and the second tool clamp is installed at the movable end of the second driving device and is detachably connected with the upper portion of the first roller.
The rolling mill comprises a rolling mill body, and is characterized by further comprising a base and a moving guide mechanism, wherein the moving guide mechanism comprises a sliding rail, a third driving device and a ball screw device, the base is arranged on the side of the rolling mill body, the third driving device is in driving connection with the sliding rail through the ball screw device, so that the sliding rail can be arranged on the base in a sliding mode and can be pushed into the rack or pulled out of the rack, and the push-pull mechanism drives the first roller to move on the sliding rail.
The first roller is driven by the push-pull mechanism to slide on the roller.
The rolling mill comprises a base, a rolling mill body, a sliding rail, a sliding block, a sliding rail and a sliding rail, wherein the base and the rolling mill body are provided with a plurality of sliding blocks along the horizontal direction, the outer side of the sliding rail is provided with a guide rail along the length direction of the sliding rail, and the sliding blocks are connected with the sliding rail in a matched sliding mode.
The first bearing seat group is installed at two ends of the first roller, the first tool clamp is detachably connected with the first bearing seat group at one end, and the second tool clamp is detachably connected with the first bearing seat groups at two ends.
The first tool clamp comprises a first quick tool male disc and a first quick tool mother disc which are matched, the first quick tool male disc is installed at the movable end of the first driving device, and the first quick tool mother disc is installed on the first bearing seat group at one end; the second tooling clamp comprises a second quick tooling male disc and a second quick tooling mother disc which are matched, the second quick tooling male disc is installed at the movable end of the second driving device, and the second quick tooling mother disc is installed at the first bearing seat group at the two ends.
The rolling mill body further comprises auxiliary positioning rollers which are rotatably arranged on two sides between the first rolling roller and the second rolling roller.
The push-pull mechanism further comprises a mounting seat, and the fixed end of the first driving device is fixed to the top of the base through the mounting seat.
In another aspect, an embodiment of the present invention further provides a working method of an automatic roll changing mill for tube rolling according to the first aspect of the embodiment of the present invention, including:
s1, pulling the first roller out of the frame through the first driving device and the first tool clamp;
s2, moving the tube blank to the position above the second roller;
s3, pushing the first roller into the frame through the first driving device and the first tool clamp and penetrating through the center of the tube blank;
s4, disconnecting the first tool clamp from the first roller, and driving the first roller to move downwards through a second driving device and a second tool clamp so that the first roller and the second roller are clamped on the inner side and the outer side of the tube blank respectively;
s5, starting the first roller and the second roller to rotate reversely at the same time;
and S6, after the blank is rolled, pulling out the first roller from the frame through the first driving device and the first tool clamp, and taking out the finished product pipe from the frame.
Wherein, before step S1, the method further includes:
s01, driving the first roller to move upwards through a second driving device and a second tool clamp;
s02, driving the slide rail to move above the second roller through a third driving device and a ball screw device;
s03, driving the first roller to move downwards through the second driving device and the second tool clamp, placing the first roller on the sliding rail, and disconnecting the second tool clamp from the first roller;
further included between step S1 and step S2 is:
s11, driving the slide rail to be pulled out of the rack through a third driving device and a ball screw device;
further included between step S2 and step S3 is:
s21, repeating the step S02;
further included between step S3 and step S4 is:
s31, driving the slide rail to be pulled out from between the first roller and the second roller through a third driving device and a ball screw device;
step S6 further includes:
s61, after the blank is rolled, driving the slide rail to move below the first roller through a third driving device and a ball screw device;
s62, pulling the first roller out of the frame through the first driving device and the first tool clamp;
and S63, driving the slide rail to be pulled out of the rack through the third driving device and the ball screw device, and taking the finished product pipe out of the rack.
According to the automatic roll changing rolling mill for rolling the pipe and the working method thereof, the horizontal movement of the first roller is controlled through the push-pull mechanism, the lifting movement of the first roller is controlled through the lifting mechanism, and the pipe blank is automatically processed through the first roller and the second roller.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an automatic roll changing mill for tube rolling according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a first perspective structure of the push-pull mechanism, the base and the movement guide mechanism provided in the embodiment of the present invention;
FIG. 3 is a schematic diagram of a second perspective view of the push-pull mechanism, the base and the movement guide mechanism provided in the embodiment of the present invention;
FIG. 4 is a right side view of a mill body provided by an embodiment of the present invention;
fig. 5 is a schematic partial structure diagram of a rolling mill body according to an embodiment of the present invention.
Reference numerals:
101: a frame; 102: a first roll; 103: a second roll; 104: a first bearing seat group; 105: a bearing seat fixing table; 201: a first driving device; 202: a first tooling fixture; 203: a mounting seat; 301: a second driving device; 302: a second tooling fixture; 4: a base; 501: a slide rail; 502: a third driving device; 503: a ball screw device; 504: a roller; 505: a slider; 506: a guide rail; 507: a second bearing seat group; 6: and (5) auxiliary positioning rollers.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection can be mechanical connection or point connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
An automatic roll changing mill for tube rolling according to an embodiment of the present invention is described below with reference to fig. 1 to 5, including: the rolling mill comprises a rolling mill body, a push-pull mechanism and a lifting mechanism.
The rolling mill body includes a stand 101, and a first roll 102 mounted on an upper portion of the stand 101 and a second roll 103 mounted on a lower portion of the stand 101. The rolling mill body is in a common two-roller rolling mill structure, and the rolling mill drive is in a conventional motor drive structure, and a motor of the rolling mill drive structure is arranged on the right side of the stand 101 and is used for driving the first roller 102 and the second roller 103 to rotate.
The push-pull mechanism comprises a first driving device 201 and a first tooling fixture 202, wherein the first tooling fixture 202 is installed at the movable end of the first driving device 201 and is used for being detachably connected with the end part of the first roller 102 so as to pull out or push the first roller 102 from or into the rack 101. The first driving device 201 may adopt a hydraulic cylinder or other driving devices, the hydraulic cylinder is connected with a push-pull rod, the end of the push-pull rod is provided with a first tooling fixture 202, the first tooling fixture can clamp the first roller 102 and move through the driving of the hydraulic cylinder, and two operations of pulling out the first roller 102 from the rack 101 and pushing the first roller into the rack 101 are realized. It should be understood that the first tooling fixture 202 may be removably coupled to the first roll 102 such that when the first roll 102 does not require horizontal movement, the first tooling fixture 202 is decoupled from the first roll 102 and does not move in unison.
The lifting mechanism comprises a second driving device 301 and a second tool clamp 302, and the second tool clamp 302 is mounted at the movable end of the second driving device 301 and is detachably connected with the upper portion of the first roller 102. The second driving device 301 may be a servo electric cylinder, which is located at the top of the first roller 102, and the second tooling clamp 302 is fixed at the bottom of the servo electric cylinder, and can clamp two ends of the first roller 102 and move up and down through the drive of the servo electric cylinder, and when the tube blank is conveyed to the rack 101 in place, the first roller 102 can be driven by the servo electric cylinder to move down, so that the first roller 102 and the second roller 103 are pressed on the inner side and the outer side of the tube blank respectively. It should be understood that the second tooling fixture 302 may be removably coupled to the first roll 102, and that when the first roll 102 does not require up-down movement, the second tooling fixture 302 is decoupled from the first roll 102 and does not move in unison.
The working method of the automatic roll changing mill for rolling the pipe mainly comprises the following steps: the first roller 102 is pulled out of the rack 101 by a push-pull mechanism, then the tube blank is moved to the upper part of the second roller 103 in the rack 101 by a mechanical arm or a slope, the first roller 102 is pushed into the central part of the tube blank by the push-pull mechanism, then the first roller 102 is controlled to descend by a lifting mechanism, so that the first roller 102 and the second roller 103 are respectively pressed on the inner side and the outer side of the tube blank, the first roller 102 and the second roller 103 are started to rotate reversely, and simultaneously the lifting mechanism controls the rolling reduction of different passes of rolling, so that the tube blank is processed. After the machining is completed, the first roll 102 is first pulled out of the frame 101, and finally the finished pipe is taken out of the frame 101.
According to the automatic roll changing rolling mill for rolling the pipe, the first roll 102 is controlled to horizontally move through the push-pull mechanism, the lifting mechanism is used for controlling the lifting movement of the first roll 102, and the first roll 102 and the second roll 103 are used for automatically processing the pipe blank.
In one embodiment, the automatic roll changing mill for rolling a tube further comprises a base 4 and a moving guide mechanism, the moving guide mechanism comprises a slide rail 501, a third driving device 502 and a ball screw device 503, the base 4 is arranged at the side of the mill body, the third driving device 502 is in driving connection with the slide rail 501 through the ball screw device 503, so that the slide rail 501 is slidably arranged on the base 4 and can be pushed into the stand 101 or pulled out of the stand 101, and the push-pull mechanism drives the first roll 102 to move on the slide rail 501. In this embodiment, the base 4 is used for installing a push-pull mechanism and a movement guide mechanism, and the movement guide mechanism is used for providing a direction for pushing and pulling the first roller 102, specifically: the first roll 102 needs to slide on the slide rail 501 both when being pushed into the housing 101 and when being pulled out from the housing 101. Therefore, it can be understood that, through the third driving device 502 and the ball screw device 503, when the first roller 102 moves horizontally, the sliding track 501 needs to move into the frame 101, providing a moving guide and receiving function for the first roller 102, so that the first roller 102 slides on the sliding track 501, and the first roller 102 can be pulled out of the frame 101 and pushed into the frame 101. Further, the third driving device 502 may employ a motor, and the ball screw device 503 converts the rotational motion of the motor into the reciprocating linear motion of the slide rail 501. The slide rail 501 is driven by the third driving device 502 and the ball screw device 503 to slide, and can extend from the base 4 and move into the frame 101 and be pulled back to the base 4 from the frame 101.
In one embodiment, the movement guide mechanism further includes a second bearing set 507, and the ball screw device 503 is mounted on the base 4 through the second bearing set 507.
In one embodiment, a plurality of rollers 504 are fixed inside the slide track 501, the rollers 504 are arranged along the length direction of the slide track 501, and the first roller 102 slides on the rollers 504 by the push-pull mechanism. In the present embodiment, the roller 504 uniformly distributed on the slide track 501 reduces the friction force of the first roller 102 moving on the slide track 501, so that it is easier to move horizontally along the slide track 501.
In one embodiment, a plurality of grooves are formed in the horizontal direction on the base 4 and the rolling mill body, a sliding block 505 is installed in each groove, a guide rail 506 along the length direction of the sliding rail 501 is formed on the outer side of the sliding rail 501, and the sliding block 505 is matched and slidably connected with the sliding rail 501. In this embodiment, five pairs of grooves are uniformly formed in the base 4 at intervals, two pairs of grooves are formed in the frame 101, a slider 505 is correspondingly installed in each groove, and the guide rail 506 on the outer side of the slide rail 501 is in sliding fit with the slider 505 in the groove, so that the slide rail 501 can slide along the direction of the groove. It should be understood that during the sliding of the sliding track 501, at least three sets of sliding blocks 505 are slidably engaged with the guiding track 506 to prevent the sliding track 501 from falling off.
In one embodiment, the automatic roll changing mill for tube rolling further comprises a first bearing set 104, the first bearing set 104 is installed at two ends of the first roll 102, the first tooling clamp 202 is detachably connected with the first bearing set 104 at one end, and the second tooling clamp 302 is detachably connected with the first bearing set 104 at two ends. Specifically, a chock fixing table 105 is provided on the stand 101, and after the first roll 102 is moved to a predetermined position in the stand 101, when the first roll 102 and the second roll 103 are rolled in rotation, the first chock group 104 is fixed to the chock fixing table 105 and its inner bearing works, and when the first roll 102 is moved horizontally or up and down, the first chock group 104 moves together with the first roll 102.
In one embodiment, the first tooling fixture 202 includes a first fast tooling male disc and a first fast tooling female disc, which are matched, the first fast tooling male disc is installed at the movable end of the first driving device 201, and the first fast tooling female disc is installed at the first bearing seat group 104 at one end; the second tooling fixture 302 comprises a second quick tooling male disc and a second quick tooling mother disc which are matched, the second quick tooling male disc is installed at the movable end of the second driving device 301, and the second quick tooling mother disc is installed at the first bearing seat groups 104 at two ends. In this embodiment, the first fast tooling male disc and the first fast tooling master disc can be correspondingly matched and detachably connected, and the second fast tooling male disc and the second fast tooling master disc can be correspondingly matched and detachably connected, so as to realize switching between horizontal movement and lifting movement of the first roller 102. Preferably, the first tooling fixture 202 and the second tooling fixture 302 can select ATI rapid tooling, and when receiving an electrical signal, locking with the first roll 102 can be achieved.
In one embodiment, the rolling mill body further comprises auxiliary positioning rolls 6, and the auxiliary positioning rolls 6 are rotatably mounted on two sides between the first rolling roll 102 and the second rolling roll 103. After entering the stand 101, the tube blank is supported by the second roll 103 and the auxiliary positioning rolls 6 on both sides, and the auxiliary positioning rolls 6 rotate along with the tube blank when the tube blank is rolled. The auxiliary registration rollers 6 may be connected to the swash plate during the conveyance of the raw pipe.
In one embodiment, the push-pull mechanism further comprises a mounting seat 203, and the fixed end of the first driving device is fixed on the top of the base 4 through the mounting seat 203. The mounting 203 may be in the form of a mounting plate that is snapped on top of the base 4.
The embodiment of the invention also provides a working method of the automatic roll changing rolling mill for rolling the pipe, which comprises the following steps:
s1, pulling the first roller 102 out of the frame 101 through the first driving device 201 and the first tool clamp 202;
s2, moving the tube blank to the upper part of the second roller 103;
s3, pushing the first roller 102 into the frame 101 through the first driving device 201 and the first tool clamp 202 and penetrating the first roller from the center of the tube blank;
s4, disconnecting the first tool clamp 202 from the first roller 102, and driving the first roller 102 to move downwards through the second driving device 301 and the second tool clamp 302, so that the first roller 102 and the second roller 103 are clamped on the inner side and the outer side of the tube blank respectively;
s5, starting the first roller 102 and the second roller 103 to rotate reversely at the same time;
s6, after the rolling of the billet is completed, the first roll 102 is pulled out from the stand 101 by the first driving device 201 and the first tool holder 202, and the finished pipe is taken out from the stand 101.
In short, before the tube blank enters the stand 101, the first roll 102 needs to be pulled out from the stand 101 (i.e., step S1), and then the tube blank is conveyed into the stand 101 (i.e., step S2), lapped on the auxiliary registration roll 6 and the second roll 103, the first roll 102 is pushed into the center of the tube blank (i.e., step S3), the first roll 102 descends and clamps the tube blank with the second roll 103 (i.e., step S4), the tube blank is rolled (i.e., step S5), and finally the finished tube is taken out from the stand 101 (i.e., step S6).
The automatic roll changing mill for rolling the pipe is adopted for processing, so that the manufacturing cost is reduced, the rolls can be quickly and automatically changed, and the production efficiency is improved on the premise of realizing the rolling function of the large-diameter pipe.
In one embodiment, before step S1, the method further includes:
s01, driving the first roller 102 to move upwards through the second driving device 301 and the second tool clamp 302;
s02, driving the slide rail 501 to move above the second roller 103 through the third driving device 502 and the ball screw device 503;
s03, driving the first roller 102 to move downwards through the second driving device 301 and the second tool clamp 302, placing the first roller 102 on the sliding rail 501, and disconnecting the second tool clamp 302 from the first roller 102;
further included between step S1 and step S2 is:
s11, the sliding rail 501 is driven to be pulled out of the rack 101 through the third driving device 502 and the ball screw device 503;
further included between step S2 and step S3 is:
s21, repeating the step S02;
further included between step S3 and step S4 is:
s31, the sliding rail 501 is driven to be pulled out from the space between the first roller 102 and the second roller 103 through the third driving device 502 and the ball screw device 503;
step S6 further includes:
s61, after the blank is rolled, the third driving device 502 and the ball screw device 503 drive the slide rail 501 to move below the first roller 102;
s62, pulling the first roller 102 out of the frame 101 through the first driving device 201 and the first tool clamp 202;
and S63, the sliding rail 501 is driven by the third driving device 502 and the ball screw device 503 to be pulled out from the rack 101, and the finished pipe is taken out from the rack 101.
In short, in the present embodiment, when the first roll 102 moves horizontally, it is guided and carried by the slide track 501, and the slide track 501 needs to be pulled out of or pushed into the frame 101 in different processes. Specifically, before the first roller 102 is pushed into the frame 101, the first roller 102 needs to be lifted, the slide rail 501 is placed below the first roller 102, and then the first roller 102 is placed on the slide rail 501 to move (i.e., steps S01 to S03); before the tube blank is placed in the frame 101, the slide rail 501 needs to be pulled back from the frame 101 (i.e., step S11); before the first roll 102 pushes the center of the tube blank, the slide rail 501 needs to be moved into the frame 101 (i.e., step S21); before starting the rolling of the pipe blank, the slide rail 501 needs to be pulled out from between the first roll 102 and the pipe blank (i.e., step S31); after the rolling of the billet is completed, the first rolling roll 102 needs to be slid and pulled out from the slide rail 501, then the slide rail 501 needs to be pulled out from the frame 101, and finally the finished pipe needs to be taken out (i.e., steps S61 to S63).
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An automatic roll-changing rolling mill for rolling tubes, comprising: the rolling mill comprises a rolling mill body, a push-pull mechanism and a lifting mechanism; wherein,
the rolling mill body comprises a rack, a first roller and a second roller, wherein the first roller is arranged at the upper part of the rack, and the second roller is arranged at the lower part of the rack;
the push-pull mechanism comprises a first driving device and a first tool clamp, the first tool clamp is mounted at the movable end of the first driving device and is detachably connected with the end part of the first roller, and the first roller is pulled out of or pushed into the rack;
the lifting mechanism comprises a second driving device and a second tool clamp, and the second tool clamp is installed at the movable end of the second driving device and is detachably connected with the upper portion of the first roller.
2. The automatic roll changing mill for rolling tubes according to claim 1, further comprising a base and a moving guide mechanism, wherein the moving guide mechanism comprises a slide rail, a third driving device and a ball screw device, the base is disposed beside the mill body, the third driving device is in driving connection with the slide rail through the ball screw device, so that the slide rail is slidably disposed on the base and can be pushed into or pulled out of the stand, and the push-pull mechanism drives the first roll to move on the slide rail.
3. The automatic roll-changing mill for rolling tubes according to claim 2, wherein a plurality of rollers are fixed to the inner side of the slide rail, the rollers are arranged along the length direction of the slide rail, and the first roll is slid on the rollers by the push-pull mechanism.
4. The automatic roll-changing mill for pipe rolling according to claim 2, characterized in that a plurality of sliding blocks are horizontally installed on the base and the mill body, and the outer side of the sliding rail is configured with a guide rail along the length direction of the sliding rail, and the sliding blocks are in matching sliding connection with the sliding rail.
5. The automatic roll changing mill for rolling tubes according to claim 1, further comprising first chock sets installed at both ends of the first roll, wherein the first tooling fixture is detachably connected to the first chock set at one end, and the second tooling fixture is detachably connected to the first chock sets at both ends.
6. The automatic roll-changing mill for rolling pipes according to claim 5, wherein the first tooling fixture comprises a first fast tooling male disc and a first fast tooling female disc which are matched, the first fast tooling male disc is mounted at a movable end of the first driving device, and the first fast tooling female disc is mounted at the first bearing seat group at one end; the second tooling clamp comprises a second quick tooling male disc and a second quick tooling mother disc which are matched, the second quick tooling male disc is installed at the movable end of the second driving device, and the second quick tooling mother disc is installed at the first bearing seat group at the two ends.
7. The automatic roll-changing mill for pipe rolling as claimed in claim 1, wherein the mill body further comprises auxiliary positioning rolls rotatably installed at both sides between the first roll and the second roll.
8. The automatic roll-changing mill for pipe rolling according to claim 2, wherein the push-pull mechanism further comprises a mounting seat, and the fixed end of the first driving device is fixed on the top of the base through the mounting seat.
9. A method of operating an automatic roll-changing mill for tube rolling according to any one of claims 1-8, characterized in that it comprises:
s1, pulling the first roller out of the frame through the first driving device and the first tool clamp;
s2, moving the tube blank to the position above the second roller;
s3, pushing the first roller into the frame through the first driving device and the first tool clamp and penetrating through the center of the tube blank;
s4, disconnecting the first tool clamp from the first roller, and driving the first roller to move downwards through a second driving device and a second tool clamp so that the first roller and the second roller are clamped on the inner side and the outer side of the tube blank respectively;
s5, starting the first roller and the second roller to rotate reversely at the same time;
and S6, after the blank is rolled, pulling out the first roller from the frame through the first driving device and the first tool clamp, and taking out the finished product pipe from the frame.
10. The working method of an automatic roll-changing mill for tube rolling according to claim 9, characterized by further comprising, before step S1:
s01, driving the first roller to move upwards through a second driving device and a second tool clamp;
s02, driving the slide rail to move above the second roller through a third driving device and a ball screw device;
s03, driving the first roller to move downwards through the second driving device and the second tool clamp, placing the first roller on the sliding rail, and disconnecting the second tool clamp from the first roller;
further included between step S1 and step S2 is:
s11, driving the slide rail to be pulled out of the rack through a third driving device and a ball screw device;
further included between step S2 and step S3 is:
s21, repeating the step S02;
further included between step S3 and step S4 is:
s31, driving the slide rail to be pulled out from between the first roller and the second roller through a third driving device and a ball screw device;
step S6 further includes:
s61, after the blank is rolled, driving the slide rail to move below the first roller through a third driving device and a ball screw device;
s62, pulling the first roller out of the frame through the first driving device and the first tool clamp;
and S63, driving the slide rail to be pulled out of the rack through the third driving device and the ball screw device, and taking the finished product pipe out of the rack.
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| CN206168949U (en) * | 2016-10-13 | 2017-05-17 | 福建宏旺实业有限公司 | A grappling fixture structure for roll change |
| CN206445457U (en) * | 2016-10-19 | 2017-08-29 | 二重集团（德阳）重型装备股份有限公司 | Hot strip steel coiler pinch-roll Quick roll-changing device |
| CN107649518A (en) * | 2017-11-07 | 2018-02-02 | 扬州诚德重工有限公司 | A kind of horizontal four-roller barrier part milling train |
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| CN1107393A (en) * | 1993-09-28 | 1995-08-30 | 克莱西姆公司 | Axial displacement rolling mill |
| CN1358585A (en) * | 2000-12-13 | 2002-07-17 | 三菱重工业株式会社 | Roller changing equipment and method for rolling machine |
| CN101444795A (en) * | 2008-12-29 | 2009-06-03 | 中国第一重型机械集团公司 | Shell ring mill roll changer |
| CN102489640A (en) * | 2011-12-29 | 2012-06-13 | 二重集团（德阳）重型装备股份有限公司 | Roller and large ring rolling machine adopting same |
| CN203678861U (en) * | 2014-01-26 | 2014-07-02 | 唐山市丰润区鑫源机械制造有限公司 | Fast-lateral-moving mechanism of two-roller rolling mill |
| CN104148401A (en) * | 2014-08-07 | 2014-11-19 | 中冶南方工程技术有限公司 | Cold rolling unit tension roller replacing device |
| CN104324942A (en) * | 2014-09-03 | 2015-02-04 | 中色奥博特铜铝业有限公司 | Working roll replacement auxiliary device of rough mill and roll replacement method of working roll replacement auxiliary device |
| CN204396757U (en) * | 2014-12-10 | 2015-06-17 | 江阴圣道奇科技有限公司 | Bearing forging is with grinding expansion machine |
| CN206168949U (en) * | 2016-10-13 | 2017-05-17 | 福建宏旺实业有限公司 | A grappling fixture structure for roll change |
| CN206445457U (en) * | 2016-10-19 | 2017-08-29 | 二重集团（德阳）重型装备股份有限公司 | Hot strip steel coiler pinch-roll Quick roll-changing device |
| CN107649518A (en) * | 2017-11-07 | 2018-02-02 | 扬州诚德重工有限公司 | A kind of horizontal four-roller barrier part milling train |
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| CN112404135B (en) | 2022-12-02 |
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