CN112692066B - Production device with core rod for rolling mill - Google Patents

Abstract

The invention discloses a production device with a mandrel for a rolling mill, which comprises a first scheduling device, a second scheduling device, a mandrel, a blank pipe feeding assembly line, a mandrel circulating assembly line, an assembly line mandrel locking device, a mandrel left and right limiting and rolling device, a rolling mill discharging assembly line, a rolling mill feeding assembly line and a finished product pipe, wherein the first scheduling device, the second scheduling device and the rolling mill are all arranged on the ground, and the first scheduling device and the second scheduling device are arranged in opposite directions; the invention provides a production device with a mandrel for a rolling mill, which can effectively solve the circulating processes of automatic mandrel feeding, automatic blank tube feeding, automatic tensioning, automatic rolling, automatic unlocking, automatic finished tube discharging and automatic mandrel of the mandrel for the rolling mill, reduce the labor intensity, reduce the labor cost and improve the automation degree.

Description

Production device with core rod for rolling mill

Technical Field

The invention relates to the technical field of rolling mills, in particular to a production device for a rolling mill with a mandrel.

Background

At present, a rolling mill is an essential production device in the production of steel pipes, but a mandrel mill faces a great problem in production, particularly, a mandrel is difficult to extract after rolling, and the turnover time of the mandrel is long, so that the rolling efficiency of the mandrel mill is low, the energy consumption loss is large, and the production cost is high.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a production device for a rolling mill with a core rod.

In order to solve the technical problems, the invention is solved by the following technical scheme: a production device with a mandrel for a rolling mill comprises a first scheduling device, a second scheduling device, the mandrel, a blank pipe feeding assembly line, a mandrel circulating assembly line, a rolling mill discharging assembly line, a rolling mill feeding assembly line and a finished pipe, wherein the first scheduling device, the second scheduling device and the rolling mill are all arranged on the ground, and the first scheduling device and the second scheduling device are arranged oppositely.

The first scheduling device comprises an annular guide rail, a chain and a scheduling limiting device, the scheduling limiting device is rotatably arranged on the chain, the chain is slidably arranged on the annular guide rail, the mandrel comprises a mandrel sleeve, the mandrel sleeve comprises a right shaft sleeve and a left shaft sleeve, and the right shaft sleeve and the left shaft sleeve can be connected with the scheduling limiting device in a matched mode.

The core rod scheduling device has the beneficial effects that the scheduling limiting device on the first scheduling device can buckle the core rod and drive the core rod to move on the annular guide rail of the first scheduling device together.

The mandrel circulating assembly line is arranged in the middle of the first dispatching device and the second dispatching device, the center line of the mandrel circulating assembly line is aligned with the center lines of the right side rails of the first dispatching device and the second dispatching device, the blank tube feeding assembly line is positioned right above the mandrel circulating assembly line, and the height position of the blank tube feeding assembly line is lower than the upper rail of the first dispatching device.

The mandrel pipe scheduling device has the advantages that the mandrel can slide on a mandrel pipe circulating assembly line and enter the motion tracks of the scheduling limiting devices on the first scheduling device and the second scheduling device, so that the scheduling limiting devices buckle the mandrel pipe and drive the mandrel pipe to move together on the annular guide rail of the first scheduling device, and when the mandrel pipe moves to the blank pipe feeding assembly line, the blank pipe on the assembly line slides onto the mandrel pipe.

The rolling mill is positioned between the rolling mill outlet assembly line and the rolling mill inlet assembly line, the rolling mill outlet assembly line, the rolling mill inlet assembly line and the rolling mill outlet assembly line are positioned on the same central line and are positioned between the first scheduling device and the second scheduling device, the rolling mill outlet assembly line is positioned on the right side of the rolling mill and is matched with the second scheduling device, the rolling mill inlet assembly line is positioned on the left side of the rolling mill and is matched with the first scheduling device, the central lines of the rolling mill, the rolling mill outlet assembly line and the rolling mill inlet assembly line are aligned with the central lines of the mandrels transported by the rolling mill outlet assembly line and the rolling mill inlet assembly line, and the assembly line mandrel locking device and the mandrel left and right limiting rolling device are arranged on the right side of the rolling mill outlet assembly line.

The blank tube rolling device has the advantages that when the blank tube enters the scheduling limiting device on the first scheduling device to drive the core rod and the blank tube to move to the feeding mill assembly line, the scheduling limiting device is separated from the core rod, the core rod and the blank tube flow into the rolling mill under the action of the additional carrier roller on the feeding mill assembly line to perform blank tube rolling work, the blank tube flows out to the discharging mill assembly line after rolling is completed, and the core rod is buckled by the scheduling limiting device on the second scheduling device to drive the core rod and the finished product tube to move to the core rod circulation assembly line.

In the above technical scheme, preferably, the rollers of all the assembly lines are linked and controlled by the assembly line motor.

In the above technical scheme, preferably, the surface materials of the rollers of all the production lines are wear-resistant and high-temperature-resistant materials.

The production line has the advantages that the production line can work all the time in a high-temperature environment, and the abrasion speed of the production line is reduced.

In the above technical solution, preferably, the distance between the leftmost roller of the blank feeding pipeline and the first dispatching device is greater than the length of the mandrel.

The mandrel blank feeding device has the beneficial effects that the dispatching limiting device on the first dispatching device can drive the mandrel to move to the position of the blank feeding assembly line, so that the position of the blank feeding assembly line does not interfere with the movement track of the mandrel.

In the above technical solution, preferably, a neutral position, which is longer than the finished product pipe and shorter than the mandrel, is provided in the middle of the right side of the mandrel circulating flow line, and the neutral position is an outflow port of the finished product pipe.

The method has the advantages that after the last rolling is finished, the dispatching limiting device on the second dispatching device buckles the core rod, so that the second dispatching device drives the core rod and the finished product pipe to move to the core rod circulation assembly line, the finished product pipe on the core rod is separated from the core rod firstly and flows into the core rod circulation assembly line, the finished product pipe flows out from the outflow port of the finished product pipe, then the second dispatching device is operated continuously, the core rod is separated from the dispatching limiting device, and the core rod moves on the core rod circulation assembly line.

The invention has the beneficial effects that: the invention provides a production device with a mandrel for a rolling mill, which can effectively solve the circulating processes of automatic mandrel feeding, automatic blank tube feeding, automatic tensioning, automatic rolling, automatic unlocking, automatic finished tube discharging and automatic mandrel of the mandrel for the rolling mill, reduce the labor intensity, reduce the labor cost and improve the automation degree.

Drawings

FIG. 1 is a schematic view of the present invention.

FIG. 2 is a top view of the present invention.

FIG. 3 is a schematic view of the present invention.

FIG. 4 is a schematic view of a mandrel cycle line according to the present invention.

FIG. 5 is a partial schematic view of the present invention.

FIG. 6 is a schematic view of a rolling line according to the present invention.

Fig. 7 is a cross-sectional view of a mandrel of the present invention.

Fig. 8 is a longitudinal cross-sectional view of a mandrel of the present invention.

FIG. 9 is a schematic view of a mandrel shaft according to the present invention.

FIG. 10 is a schematic view of a mandrel collar of the present invention.

FIG. 11 is a partial schematic view of an outer ring of a mandrel bar according to the present invention.

Fig. 12 is a longitudinal cross-sectional view of a mandrel of the present invention.

FIG. 13 is a diagram of a scheduling apparatus according to the present invention.

FIG. 14 is a cross-sectional view of a dispatching device of the present invention.

FIG. 15 is a transverse sectional view of the dispatching device of the invention.

FIG. 16 is a partial schematic view of a scheduling apparatus according to the present invention.

Fig. 17 is a schematic diagram of a scheduling stop device according to the present invention.

Fig. 18 is a sectional view of the scheduling stop device of the present invention.

FIG. 19 is a schematic view of the core rod locking apparatus of the assembly line of the present invention.

FIG. 20 is a schematic view of an assembly line mandrel locking chassis of the present invention.

FIG. 21 is a schematic view of a mandrel lock clasp of the present invention.

FIG. 22 is a cross-sectional view of the in-line mandrel locking device of the present invention.

FIG. 23 is a schematic view of the mandrel bar left and right rolling limiting device according to the present invention.

FIG. 24 is a partial schematic view of a mandrel bar left and right rolling device according to the present invention.

FIG. 25 is a schematic view of a part of a mandrel bar left and right rolling stopper device according to the present invention.

FIG. 26 is a schematic view showing the installation of the rolling device for limiting the mandrel bar left and right according to the present invention.

Detailed Description

The invention is described in further detail below with reference to the following detailed description and accompanying drawings:

example 1: referring to fig. 1 to 6 and 13, a production apparatus for a rolling mill with a mandrel includes a first dispatching device 1, a second dispatching device 2, a mandrel 3, a blank pipe 4, a blank pipe feeding line 5, a mandrel circulating line 6, a rolling mill 9, an outgoing rolling mill line 10, an incoming rolling mill line 11, and a finished pipe 12.

The first dispatching device 1 comprises an annular guide rail 21, a chain 22 and a dispatching limiting device 23, the dispatching limiting device 23 is rotatably arranged on the chain 22, the chain 22 is slidably arranged on the annular guide rail 21, the core rod 3 comprises a core rod sleeve 32, the core rod sleeve 32 comprises a right shaft sleeve 321 and a left shaft sleeve 326, and the right shaft sleeve 321 and the left shaft sleeve 326 can be connected with the dispatching limiting device 23 in a matching manner.

The dispatching limiting devices on the first dispatching device and the second dispatching device 2 can buckle the core rods and drive the core rods to move together on the annular guide rail of the first dispatching device.

The first dispatching device 1 and the second dispatching device 2 are oppositely arranged on the ground, the mandrel circulating assembly line 6 is arranged between the first dispatching device 1 and the second dispatching device 2, the center line of the mandrel circulating assembly line 6 is aligned with the right side track center lines of the first dispatching device 1 and the second dispatching device 2, the position of the mandrel circulating assembly line 6 is higher than the bottom track center lines of the first dispatching device 1 and the second dispatching device 2, and the middle of the right side is provided with a neutral gear with the length being larger than a finished product pipe 12 and smaller than a mandrel 3, wherein the neutral gear is an outflow port of the finished product pipe 12.

The blank pipe feeding assembly line 5 is positioned right above the mandrel circulating assembly line 6, the height position of the blank pipe feeding assembly line is lower than the upper track of the first dispatching device, and the distance between the leftmost roller of the blank pipe feeding assembly line 5 and the first dispatching device 1 is larger than the length of the mandrel 3.

Wherein, the left side of the blank pipe feeding assembly line 5 is provided with an inductive switch, when the core rod 3 moves upwards to the pipe feeding position, the assembly line is started, and the blank pipe 4 on the assembly line is sleeved on the core rod 3.

The rolling mill 9, the rolling outlet assembly line 10 and the rolling inlet assembly line 11 are located on the same central line and are located between the first scheduling device 1 and the second scheduling device 2, the rolling mill 9 is located in the middle, the rolling outlet assembly line 10 is located on the right side of the rolling mill 9 and is matched with the second scheduling device 2, the rolling inlet assembly line 11 is located on the left side of the rolling mill 9 and is matched with the first scheduling device 1, the central lines of the rolling mill 9, the rolling outlet assembly line 10 and the rolling inlet assembly line 11 are aligned with the central lines of the left tracks of the first scheduling device 1 and the second scheduling device 2, the height positions of the rolling outlet assembly line 10 and the rolling inlet assembly line 11 are the same, and the rolling central line of the rolling mill 9 is aligned with the central lines of the mandrels 3 transported by the rolling outlet assembly line 10 and the rolling inlet assembly line 11 in the middle of the upper and lower guide rails of the first scheduling device 1.

The working principle or the using method is as follows:

firstly, a mandrel 3 lies on a mandrel circulating assembly line 6, moves towards a first dispatching device 1 on the mandrel circulating assembly line 6, when the mandrel 3 moves to the track position of the first dispatching device 1, a sensor on the first dispatching device 1 receives a signal, a chain starts to rotate, a dispatching limiting device 23 rotates along with the chain and moves clockwise around an annular guide rail 21, the mandrel 3 enters a locking position from an upper end opening of the dispatching limiting device 23 to clamp the mandrel 3, so that the mandrel 3 is locked, the mandrel 3 moves clockwise around the annular guide rail 21 along with the dispatching limiting device 23, when the mandrel 3 moves to the position height of a blank inlet assembly line 5, an induction switch is triggered, a tubing assembly line 5 is started, a blank pipe 4 on the assembly line is sleeved on the mandrel 3, when the blank pipe 4 is completely sleeved on the mandrel 3, a detection switch is triggered, the dispatching limiting device 23 drives the mandrel 3 and the blank pipe 4 to move clockwise along the annular guide rail 21, when the mandrel 3 contacts the dispatching limiting device 23, the mandrel 3 continues to move clockwise, and the mandrel 3 moves away from the opening of the dispatching assembly line 11, so that the mandrel 3 can be unlocked, and the mandrel 3 can move into the assembly line 11.

Then the mandrel 3 drives the blank pipe 4 to move in the rolling mill production line 11, then the mandrel 3 drives the blank pipe 4 to enter the rolling mill 9 to roll the pipeline, the pipeline flows into the rolling mill production line 10 after rolling is finished, when the pipeline moves to the motion track position of the second scheduling device 2, the sensor on the second scheduling device 2 receives a signal at the moment, the chain starts to rotate, the scheduling limiting device 23 rotates along with the chain and moves clockwise around the annular guide rail 21, the mandrel 3 enters the locking position from the upper end opening of the scheduling limiting device 23 to clamp the mandrel 3, so that the mandrel 3 is locked, the mandrel 3 drives the scheduling limiting device 23 to move clockwise around the annular guide rail 21, then the mandrel 3 drives the finished product pipe 12 to continue to move clockwise around the annular guide rail 21 along with the scheduling limiting device 23, when the mandrel 3 and the finished product pipe 12 contact the mandrel circulation flow 6, the induction switch is pressed to stop the second dispatching device 2, the mandrel circulating assembly line 6 is started, the mandrel 3 is locked on the dispatching limiting device 23, the finished product pipe 12 contacts the rotating roller on the mandrel circulating assembly line 6, the finished product pipe 12 is separated from the mandrel 3 under the action of the rotating roller, because a section of neutral gear with the length larger than that of the finished product pipe 12 and smaller than the mandrel 3 is arranged in the middle of the right side of the mandrel circulating assembly line 6 and is an outflow port of the finished product pipe 12, when the finished product pipe 12 passes through the neutral gear, the finished product pipe slides downwards to realize the purpose of automatic discharging, the induction switch is triggered in the sliding process to enable the second dispatching device 2 to continue to operate, the dispatching limiting device 23 continues to move clockwise, and the mandrel 3 is pressed and contacted on the mandrel circulating assembly line 6, so the mandrel 3 leaves from an upper end opening of the dispatching limiting device 23, therefore, the core rod 3 is unlocked, the core rod 3 can move on the core rod circulating assembly line 6, the core rod 3 automatically flows back to the initial state, and an automatic cycle is realized.

Example 2: referring to fig. 1-26, a production device for a rolling mill with a mandrel comprises a first scheduling device 1, a second scheduling device 2, a mandrel 3, a blank pipe 4, a blank pipe feeding assembly line 5, a mandrel circulating assembly line 6, an assembly line mandrel locking device 7, a mandrel left and right limiting rolling device 8, a rolling mill 9, a rolling mill discharging assembly line 10, a rolling mill feeding assembly line 11 and a finished pipe 12.

The first dispatching device 1 and the second dispatching device 2 are oppositely arranged on the ground,

the mandrel circulating assembly line 6 is arranged between the first scheduling device 1 and the second scheduling device 2, the central line of the mandrel circulating assembly line 6 is aligned with the right track central lines of the first scheduling device 1 and the second scheduling device 2, the position of the mandrel circulating assembly line 6 is higher than the bottom track central lines of the first scheduling device 1 and the second scheduling device 2, an assembly line mandrel locking device 7 is arranged on the left side of the mandrel circulating assembly line 6, left and right mandrel limiting rolling devices 8 are arranged on the left and right racks, a neutral stop with a length larger than a finished product pipe 12 and smaller than a mandrel 3 is arranged in the middle of the right side, and the neutral stop is an outflow port of the finished product pipe 12.

When the core rod 3 is pressed against the assembly line core rod locking device 7, and the assembly line core rod locking device 7 locks the right groove of the core rod 3, the left groove on the core rod 3 is aligned with the left guide projection 233 and the right guide projection 234 on the scheduling limiting device 23 on the first scheduling device 1, so that the scheduling limiting device 23 can accurately lock the core rod 3 when moving upwards, and the core rod 3 is driven to move upwards by the scheduling limiting device.

The blank pipe feeding assembly line 5 is positioned right above the mandrel circulating assembly line 6, the height position of the blank pipe feeding assembly line is lower than the upper track of the first dispatching device, the distance between the leftmost roller of the blank pipe feeding assembly line 5 and the first dispatching device 1 is larger than the length of the mandrel 3, and a left and right mandrel limiting rolling device 8 is arranged on the left rack.

Wherein, the left side of the blank pipe feeding assembly line 5 is provided with an inductive switch, when the core rod 3 moves upwards to the pipe feeding position, the assembly line is started, and the blank pipe 4 on the assembly line is sleeved on the core rod 3.

The rolling mill 9, the rolling outlet assembly line 10 and the rolling inlet assembly line 11 are located on the same central line and are located between the first scheduling device 1 and the second scheduling device 2, the rolling mill 9 is located in the middle, the rolling outlet assembly line 10 is located on the right side of the rolling mill 9 and is matched with the second scheduling device 2, the rolling inlet assembly line 11 is located on the left side of the rolling mill 9 and is matched with the first scheduling device 1, the central lines of the rolling mill 9, the rolling outlet assembly line 10 and the rolling inlet assembly line 11 are aligned with the central lines of the left tracks of the first scheduling device 1 and the second scheduling device 2, the height positions of the rolling outlet assembly line 10 and the rolling inlet assembly line 11 are the same, the rolling central line of the rolling mill 9 is aligned with the central lines of the mandrels 3 transported by the rolling outlet assembly line 10 and the rolling inlet assembly line 11 in the middle of the upper and lower guide rails of the first scheduling device 1, and the right side of the rolling outlet assembly line 10 is provided with an assembly line mandrel locking device 7 and a mandrel left and right mandrel limiting rolling device 8.

When the core rod 3 is pressed against the assembly line core rod locking device 7, and the assembly line core rod locking device 7 locks the left groove of the core rod 3, the right groove on the core rod 3 is aligned with the left guide projection 233 and the right guide projection 234 on the scheduling limiting device 23 on the second scheduling device 2, so that the scheduling limiting device 23 can accurately lock the core rod 3 when moving upwards, and the core rod 3 is driven to move upwards by the scheduling limiting device.

The core rod 3 comprises a core rod rotating shaft 31, a core rod sleeve 32, a first dividing outer ring 33, a second dividing outer ring 34, a third dividing outer ring 35, a fourth dividing outer ring 36, a fifth dividing outer ring 37, a sixth dividing outer ring 38 and a tension spring 39, the first dividing outer ring 33, the second dividing outer ring 34, the third dividing outer ring 35, the fourth dividing outer ring 36, the fifth dividing outer ring 37 and the sixth dividing outer ring 38 respectively comprise an outer ring guide post 331, an outer ring limit ring 332, an outer ring top ball 333 and a first tension spring ring 334, the core rod rotating shaft 31 comprises a first flat gear 311, a right limit spherical groove 312, a rotating shaft 313, a middle groove 314, a middle spherical groove 315, a second flat gear 316 and a left limit spherical groove 317, the core rod sleeve 32 comprises a right shaft sleeve 321, a right side groove 322, a sleeve 323, an outer ring guide post hole 324, a second tension spring ring 325, a left shaft sleeve 326, a left side groove 329, a first core rod locking hole 327 and a second core rod locking hole 328, a rotating shaft 313 on the mandrel rotating shaft 31 is rotatably arranged in a central hole of the mandrel sleeve 32, 6 right limiting spherical grooves 312, a middle spherical groove 315 and a left limiting spherical groove 317 on the mandrel rotating shaft 31 are uniformly arranged on the diameter of the same height, 6 outer ring guide holes 324, a second tension spring ring 325, a first mandrel locking hole 327 and a second mandrel locking hole 328 on the mandrel sleeve 32 are uniformly arranged on the diameter of the same height, an outer ring guide hole 331 on a first divided outer ring 33, a second divided outer ring 34, a third divided outer ring 35, a fourth divided outer ring 36, a fifth divided outer ring 37 and a sixth divided outer ring 38 is slidably connected on the outer ring guide hole 324 on the mandrel sleeve 32, the diameter of the outer ring guide hole 324 is slightly larger than that of the outer ring guide post 331, an outer ring top ball 333 is pressed against the middle groove 314, two ends of a tension spring 39 are respectively connected on the second tension spring ring 325 and a tension spring ring 334, the cross-sectional shape of the outer ring part of the first split outer ring 33 is small outside and large inside, and is in a convex shape, the right side surface of the second split outer ring 34 is in contact with the left side surface of the first split outer ring 33, the cross-sectional shape is large outside and small inside, the left side surface of the third split outer ring 35 is in contact with the right side surface of the first split outer ring 33, the cross-sectional shape is large outside and small inside, the rest of the fourth split outer ring 36, the fifth split outer ring 37 and the sixth split outer ring 38 are divided uniformly, the right side of the fourth split outer ring 36 is in contact with the left side of the second split outer ring 34, the right side of the fifth split outer ring 37 is in contact with the left side of the fourth split outer ring 36, the sixth split outer ring 38 is in contact with the left side of the fifth split outer ring 37, and the left side of the sixth split outer ring 35 is in contact with the right side of the third split outer ring.

When the outer ring jacking ball 333 is jacked on the middle groove 314, the outer ring limiting ring 332 is jacked on the inner wall of the mandrel sleeve 32, the first split outer ring 33, the second split outer ring 34, the third split outer ring 35, the fourth split outer ring 36, the fifth split outer ring 37 and the sixth split outer ring 38 are mutually jacked, at the moment, the whole mandrel 3 is in a tensioning state, and when the outer diameter is the maximum, the mandrel rotating shaft 31 is rotated, so that the outer ring jacking ball 333 is jacked on the middle spherical groove 315 under the action of the tension spring 39, at the moment, the first split outer ring 33 slides downwards, so that the outer rings form a gap, because the diameter of the outer ring guide post hole 324 is slightly larger than that of the outer ring guide post 331, and because all the split outer rings are connected with the tension spring 29, the second split outer ring 34, the third split outer ring 35, the fourth split outer ring 36, the fifth split outer ring 37 and the sixth split outer ring 38 incline towards the first split outer ring 33, so that the outer ring 3 is small in outer diameter, the whole mandrel is convenient to take out after being rolled.

The right shaft sleeve 321 and the left shaft sleeve 326 of the core rod sleeve 32 include a first spring hole 3211, a first compression spring 3212 and a first ball 3213 therein, two ends of the first compression spring 3212 are respectively pressed at the bottom of the first spring hole 3211 and the surface of the first ball 3213, the first ball 3213 is pressed at the surface of the rotating shaft 313 of the core rod rotating shaft 31, the relative position of the first spring hole 3211 and the outer ring guide post hole 324 form an included angle of 30 degrees, and the relative positions of the right limit spherical groove 312, the middle spherical groove 315 and the left limit spherical groove 317 on the core rod rotating shaft 31 are on the same axis.

Therefore, the core rod 3 can be in a tensioning state and can have a locking point, so that the core rod cannot be unlocked and tensioned randomly.

First scheduling device 1 includes annular guide rail 21, the chain 22, rack plate 24, dispatch stop device 23, sprocket 25, motor 26 and dispatch base 27, sprocket 25 sets up on motor 26, motor 26 and annular guide rail 21 set up on dispatch base 27, sprocket 25 is connected with the cooperation of chain 22, annular guide rail 21 is including U style of calligraphy annular track 212 and annular shrouding 213, chain 22 slides and sets up in U style of calligraphy annular track 212 of annular guide rail 21, chain 22 includes extension shaft 221, annular shrouding 213 sets up on the opening of U style of calligraphy annular track 212, be provided with the slide track groove of extension shaft 221 on annular shrouding 213, rack plate 24 sets up the position under the upper portion of annular guide rail 21, dispatch stop device 23 rotates and connects on the extension shaft 221 of chain 22 package.

The scheduling limiting device 23 includes a first rotating hole 231, a first notch 232, a left guiding protrusion 233, a right guiding protrusion 234, a second compression spring 235 and a second marble 236, wherein the middle positions of the left guiding protrusion 233 and the right guiding protrusion 234 are respectively provided with a second spring hole 237, two ends of the second compression spring 235 are respectively pressed and contacted with the bottom of the second spring hole 237 and the surface of the second marble 236, the size of the first notch 232 is consistent with that of a right shaft sleeve 321 and a left shaft sleeve 326 on the core rod 3, and the left guiding protrusion 233 and the right guiding protrusion 234 can be connected with a right groove 322 and a left groove 329 on the core rod 3 in a matching manner.

Wherein when the right sleeve 321 or the left sleeve 326 on the mandrel 3 is engaged with the first notch 232 on the scheduling stop device 23, the left guide projection 233 and the right guide projection 234 on the scheduling stop device 23 jam the right groove 322 or the left groove 329 on the mandrel 3, the second ball 236 on the scheduling stop device 23 abuts against the first mandrel locking hole 327 or the second mandrel locking hole 328 on the mandrel 3, thereby locking the mandrel 3 on the scheduling stop device 23, thereby achieving the stationary locking of the mandrel 3 on the left side of the mandrel circulation line 6, the scheduling stop device 23 on the first scheduling device 1 follows the chain, moves clockwise around the annular guide rail 21, jams the mandrel 3 upward, thereby locking the mandrel 3, causing the mandrel 3 to move clockwise around the annular guide rail 21 along with the scheduling stop device 23, when the mandrel 3 moves to the position height of the blank tube feeding line 5, activates the induction switch, the tubing line 5, places the blank tube 4 on the tubing line on the mandrel 3, when the blank tube 4 is placed on the mandrel 3, activates the induction switch, causes the blank tube 3 to move together with the blank feeding line 4, thereby causing the mandrel 3 to move clockwise along the annular guide rail 21, when the outer ring 32, the outer ring guide rail 32 is moved clockwise, thereby causing the mandrel 3 to engage with the first ring guide rail 32, when the mandrel 3, the inner ring guide rail 23 to move clockwise, thereby causing the mandrel 3 to move along the outer ring guide rail 32, and the first ring guide rail 32, thereby causing the mandrel 3 to engage with the first ring guide rail, the mandrel 3, when the mandrel 3, the outer ring guide rail 32, the mandrel 3 to move clockwise, the outer ring guide rail 32, and the mandrel 3 to move clockwise, the first outer dividing ring 33, the second outer dividing ring 34, the third outer dividing ring 35, the fourth outer dividing ring 36, the fifth outer dividing ring 37 and the sixth outer dividing ring 38 are mutually fastened, and the whole mandrel 3 is in a tensioning state.

The assembly line mandrel locking device 7 comprises a left fixing plate 71, a right fixing plate 72, a locking device roller 73, a locking bridge 74, a third compression spring 75 and a square shaft locking frame 76, wherein the locking device roller 73 is rotatably arranged at the right end of the locking bridge 74, the square shaft locking frame 76 comprises an annular buckle 761, a square shaft 762 and a square shaft limiting plate 762, the locking bridge 74 comprises a left bridge plate 741, a right bridge plate 742, a bridge plate connecting plate 743, a square guiding hole 744 and a bridge rotating rod 745, the square shaft 762 of the square shaft locking frame 76 is slidably arranged in the square guiding hole 744 of the locking bridge 74, the third compression spring 75 is slidably arranged on the square shaft 762, two ends of the third compression spring respectively abut against the upper surface of the bridge plate connecting plate 743 and the lower surface of the annular buckle 761, the upper surface of the square shaft limiting plate 762 on the square shaft locking frame 76 abuts against the lower surface of the bridge plate connecting plate 743, and the left fixing plate 71 and the right fixing plate 72 are rotatably arranged at the left side and the right side of the bridge 745 respectively.

When the mandrel 3 is pressed against the locking device roller 73, the other end of the locking bridge 74 tilts upwards under the action of the lever, the square shaft locking frame 76 abuts against the mandrel 3, the square shaft locking frame 76 is compressed downwards under the action of the third compression spring 75, when the mandrel 3 moves to the locking position, the square shaft locking frame 76 is aligned with the left groove 329 or the right groove 322 on the mandrel 3, and at the moment, under the action of the third compression spring 75, the annular buckle 761 on the square shaft locking frame 76 slides into the left groove 329 or the right groove 322 on the mandrel 3, so that the mandrel 3 cannot move continuously, and the effect of locking the mandrel 3 is achieved.

The mandrel left-right limiting rolling device 8 comprises a left-right limiting base 81, a gear power shaft 82, a roller device 83, a transition device 84, a first guide shaft 85, a second guide shaft 87, a fourth compression spring 86, a roller device base 89 and a fifth compression spring 88, wherein the gear power shaft 82 comprises a first belt pulley 821, a gear rotating shaft 822, a gear shaft 823, a second belt pulley 824, a first belt 825 and a production line roller 826, the left-right limiting base 81 comprises a left gear shaft support frame 812, a right gear shaft support frame 811, a left guide shaft fixing plate 813 and a right guide shaft fixing plate 814, the gear rotating shaft 822 on the gear power shaft 82 is rotatably arranged on the left gear shaft support frame 812 and the right gear shaft support frame 811, the first belt pulley 821 is arranged at the left end of the gear rotating shaft 822, the gear shaft 823 is arranged at the middle position of the gear rotating shaft 822 and is arranged between the left gear shaft support frame 812 and the gear shaft support frame 811, the assembly line roller 826 is used for providing power for all the rollers of the assembly line, the second belt pulley 824 is arranged on one side of the assembly line roller 826 and is positioned on the same plane with the first belt pulley 821 on the outer side of the assembly line frame, the first belt pulley 821 is connected with the second belt pulley 824 through the first belt 825, two ends of the first guide shaft 85 and the second guide shaft 87 are respectively arranged on the left guide shaft fixing plate 813 and the right guide shaft fixing plate 814, the roller device base 89 comprises a first guide hole 891, a second guide hole 892, a roller device connecting plate 893, a left connecting plate 894 and a top connecting plate 895, the transition device 84 comprises a transition flat gear 841, a transition flat gear shaft 842 and a first bevel gear 843, the transition flat gear shaft 842 is rotatably arranged on the left connecting plate 894, the transition flat gear 841 is arranged at the left end of the transition flat gear shaft 842, the first bevel gear 843 is arranged at the right end of the transition flat gear shaft 842 and at the right side of the left connecting plate 894, the roller device 83 comprises a limiting roller 831, a limiting roller shaft 832 and a second bevel gear 833, the limiting roller shaft 832 on the roller device 83 is rotatably arranged on an upper top connecting plate 895 of the roller device base 89, the limiting roller 831 is arranged at the upper end of the limiting roller shaft 832, the second bevel gear 833 is arranged at the lower end of the limiting roller shaft 832 and is meshed with the first bevel gear 843 below the top connecting plate 895, a first guide hole 891 and a second guide hole 892 on the roller device base 89 are respectively arranged on the first guide shaft 85 and the second guide shaft 87 in a sliding manner, the transition flat gear shaft 842 on the transition device 84 is meshed with the gear shaft 823, a fourth compression spring 86 and a fifth compression spring 88 are respectively arranged on the first guide shaft 85 and the second guide shaft 87 in a sliding manner, and both ends of the fourth compression spring 86 and the fifth compression spring 88 are respectively contacted with the right side of the left guide shaft fixing plate 813 and the left side of the roller device base 89.

Wherein can make roller device 83 can be about on spacing base 81 horizontal slip like this, and can also fall the power transmission on the assembly line and give roller device 83, make spacing gyro wheel 831 also have the rotation power, can drive plug or pipe back-and-forth movement, spacing rolling device 8 about this plug is all set up in the assembly line left and right sides, can make plug or pipe when not on the central line, spacing gyro wheel 831 through both sides draws close to the central line under compression spring's effect, can also provide power for plug or pipe, when preventing to skid at the bottom gyro wheel, continue the motion with the help of the power on spacing gyro wheel 831.

The device is different from the device which also comprises a first scheduling device 1, a second scheduling device 2, a mandrel 3 assembly line mandrel locking device 7 and a mandrel left-right limiting rolling device 8.

The working principle or the using method is as follows:

firstly, when the mandrel 3 is in an unlocked state, the mandrel 3 is horizontally laid on the mandrel circulating assembly line 6 and moves towards the first dispatching device 1 on the mandrel circulating assembly line 6, firstly, the mandrel 3 is adjusted to a central position through the left and right mandrel limiting rolling devices 8 arranged on the left and right sides of the mandrel circulating assembly line 6, then the mandrel 3 is pressed and contacted with the locking device roller 73 on the mandrel locking device 7 of the assembly line, under the action of a lever, the other end of the locking bridge 74 is tilted upwards, the square shaft locking frame 76 is propped against the outer ring of the mandrel 3, the square shaft locking frame 76 is compressed downwards by the third compression spring 75, at the moment, the mandrel 3 continues to move, when the mandrel 3 moves to a locking position, at the moment, the square shaft locking frame 76 is aligned with the right groove 322 on the mandrel 3, at the moment, under the action of the third compression spring 75, the annular buckle 761 on the square shaft locking frame 76 slides into the right groove 322 on the mandrel 3, so that the mandrel 3 cannot move continuously, at this time, the left side groove 329 on the mandrel 3 is aligned with the left guide bump 233 and the right guide bump 234 on the scheduling limiting device 23 on the first scheduling device 1, at this time, the sensor on the first scheduling device 1 receives a signal, the motor 26 is turned on, the chain starts to rotate, the scheduling limiting device 23 rotates along with the chain, the mandrel 3 moves clockwise around the annular guide rail 21, the mandrel 3 enters the locking position from the upper end opening of the scheduling limiting device 23, the mandrel 3 is clamped, the mandrel 3 is locked, the mandrel 3 moves clockwise around the annular guide rail 21 along with the scheduling limiting device 23, when the position of the blank tube feeding assembly line 5 is reached, the induction switch is triggered, the tubing assembly line 5 is started, the blank tube 4 on the assembly line is sleeved on the mandrel 3, and when the blank tube 4 is completely sleeved on the mandrel 3, the detection switch is triggered, the dispatching and limiting device 23 drives the mandrel 3 and the blank tube 4 to move clockwise along the annular guide rail 21, when the mandrel runs above the annular guide rail, the second flat gear 316 on the mandrel 3 is meshed with the rack plate 24 on the first dispatching device 1, because the mandrel moves clockwise along the annular guide rail 21 at this time, the rack plate 24 is fixedly arranged on the annular guide rail 21, and the second flat gear 316 and the rack plate generate a relative movement, so that the mandrel rotating shaft 31 of the mandrel 3 and the mandrel sleeve 32 rotate relatively, the outer ring jacking ball 333 on the mandrel 3 is jacked on the middle groove 314, the outer ring limiting ring 332 is jacked on the inner wall of the mandrel sleeve 32, the first outer dividing ring 33, the second outer dividing ring 34, the third outer dividing ring 35, the fourth outer dividing ring 36, the fifth outer dividing ring 37 and the sixth outer dividing ring 38 are mutually jacked, the whole mandrel 3 is in a tensioned state, and the mandrel is in a locked state at this time.

And then the mandrel 3 continues to move clockwise around the annular guide rail 21 along with the dispatching limiting device 23, when the mandrel 3 contacts the rolling mill feeding assembly line 11, the dispatching limiting device 23 continues to move clockwise, and the mandrel 3 is pressed on the rolling mill feeding assembly line 11, so that the mandrel 3 leaves from the upper end opening of the dispatching limiting device 23, the mandrel 3 is unlocked, and the mandrel 3 can move in the rolling mill feeding assembly line 11.

Then the mandrel 3 drives the blank tube 4 to move in the rolling mill assembly line 11, firstly the mandrel 3 is adjusted to the central position through a mandrel left and right limiting rolling device 8 arranged on the left and right of the rolling mill assembly line 11, then the mandrel 3 drives the blank tube 4 to enter the rolling mill 9 to perform the rolling work of the pipeline, the mandrel 3 flows out of the rolling mill assembly line 10 together after the rolling is finished, firstly the mandrel 3 is adjusted to the central position through the mandrel left and right limiting rolling device 8 arranged on the left and right of the rolling mill assembly line 10, then the mandrel 3 is pressed and contacted with a locking device roller 73 on the mandrel locking device 7 of the assembly line, under the action of a lever, the other end of the locking bridge 74 tilts upwards, a square shaft locking frame 76 is pressed against the outer ring of the mandrel 3, the square shaft locking frame 76 is compressed downwards by a third compression spring 75, at the moment, the mandrel 3 continues to move, at the moment, when the mandrel 3 moves to the locking position, the square shaft locking frame 76 is aligned with a left groove 329 on the mandrel 3, at this time, under the action of the third compression spring 75, the annular buckle 761 on the square shaft locking bracket 76 slides into the left side groove 329 on the mandrel 3, so that the mandrel 3 cannot move any further, at this time, the 3 right side groove 322 on the mandrel is aligned with the left guide projection 233 and the right guide projection 234 on the scheduling stop device 23 on the second scheduling device 2, at this time, the sensor on the second scheduling device 2 receives a signal, the motor is turned on, the chain starts to rotate, the scheduling stop device 23 rotates along with the chain, clockwise moves around the annular rail 21, the mandrel 3 enters a locking position from the upper end opening of the scheduling stop device 23, and is clamped with the mandrel 3, so that the mandrel 3 is locked, so that the mandrel 3 follows the scheduling stop device 23 to move clockwise around the annular rail 21, when moving above the annular rail, the first flat gear 311 on the mandrel 3 is engaged with the rack plate 24 on the second scheduling device 2, at this time, the mandrel moves clockwise along the annular guide rail 21, the rack plate 24 is fixedly arranged on the annular guide rail 21, so that the mandrel and the annular guide rail produce a relative movement, so that the first pinion 311 rotates, the mandrel rotating shaft 31 of the mandrel 3 and the mandrel sleeve 32 produce a relative rotation, the outer ring jacking ball 333 is jacked on the middle spherical groove 315 under the action of the tension spring 39, at this time, the first split outer ring 33 slides downwards, so that the outer ring appears as a hole, because the diameter of the outer ring guide post hole 324 is slightly larger than that of the outer ring guide post 331, and because all the split outer rings are connected with the tension spring 29, the second split outer ring 34, the third split outer ring 35, the fourth split outer ring 36, the fifth split outer ring 37 and the sixth split outer ring 38 incline towards the first split outer ring 33, so that the outer diameter of the whole mandrel 3 becomes small, and the mandrel 3 is in an unlocking state.

Then the mandrel 3 carries the finished product pipe 12 to continue to move clockwise around the annular guide rail 21 along with the dispatching limiting device 23, when the mandrel 3 and the finished product pipe 12 contact the mandrel circulating assembly line 6, the press-touch sensing switch enables the second dispatching device 2 to stop operation, at the moment, the mandrel circulating assembly line 6 is opened, because the mandrel 3 is in an unlocking state at the moment, the outer diameter of the mandrel 3 is reduced, the finished product pipe 12 can be easily separated from the mandrel 3, at the moment, the mandrel 3 is locked on the dispatching limiting device 23, the finished product pipe 12 contacts a rotating roller on the mandrel circulating assembly line 6, under the action of the rotating roller and a mandrel left-right limiting rolling device 8, the finished product pipe 12 is separated from the mandrel 3, because a section of the finished product pipe 12 with the length larger than the length of the right side of the mandrel 3 is arranged in the middle of the mandrel circulating assembly line 6, the hollow block is an outflow port of the finished product pipe 12, when the finished product pipe 12 passes through the hollow block, the hollow block slides downwards, the automatic discharging purpose is realized, the induction switch is triggered in the sliding process, the second dispatching device 2 continues to operate, the dispatching device 23 contacts the mandrel 3 to enable the mandrel 3 to move clockwise, the mandrel 3 to continue to move, and the mandrel 3 to leave the opening of the circulating assembly line 6, so that the mandrel 3 can be unlocked, and the mandrel 3 can automatically unlocks.

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 (5)

1. A production device with a mandrel for a rolling mill comprises a first scheduling device (1), a second scheduling device (2), a mandrel (3), a blank pipe (4), a blank pipe feeding assembly line (5), a mandrel circulating assembly line (6), a rolling mill (9), a rolling mill discharging assembly line (10), a rolling mill feeding assembly line (11) and a finished product pipe (12), wherein the first scheduling device (1), the second scheduling device (2) and the rolling mill (9) are all arranged on the ground, and the first scheduling device (1) and the second scheduling device (2) are arranged oppositely;

the first scheduling device (1) comprises an annular guide rail (21), a chain (22) and a scheduling limiting device (23), wherein the scheduling limiting device (23) is rotatably arranged on the chain (22), and the chain (22) is slidably arranged on the annular guide rail (21);

the core rod (3) comprises a core rod rotating shaft (31), a core rod sleeve (32), a first dividing outer ring (33), a second dividing outer ring (34), a third dividing outer ring (35), a fourth dividing outer ring (36), a fifth dividing outer ring (37), a sixth dividing outer ring (38) and a tension spring (39), the first dividing outer ring (33), the second dividing outer ring (34), the third dividing outer ring (35), the fourth dividing outer ring (36), the fifth dividing outer ring (37) and the sixth dividing outer ring (38) respectively comprise an outer ring guide post (331), an outer ring limiting ring (332), an outer ring jacking ball (333) and a first tension spring ring (334), the core rod rotating shaft (31) comprises a first flat gear (311), a right limiting spherical groove (312), a rotating shaft (313), a middle groove (314), a middle spherical groove (315), a second flat gear (316), a left limiting spherical groove (317), the core rod sleeve (32) comprises a right shaft sleeve (321), a right side groove (322), a sleeve (323), a second outer ring guide post hole (324), a second flat gear (316), a left limiting spherical groove (317), a left side locking shaft sleeve (326) and a left side locking shaft sleeve (326), a left side locking shaft sleeve (326) and a left side locking device (326), a rotating shaft (313) on the mandrel rotating shaft (31) is rotatably arranged in a central hole of the mandrel sleeve (32), 6 right limiting spherical grooves (312), a middle spherical groove (315) and a left limiting spherical groove (317) on the mandrel rotating shaft (31) are uniformly arranged in the circumferential direction of the corresponding height respectively, 6 outer ring guide post holes (324), a second tension spring ring (325), a first mandrel locking hole (327) and a second mandrel locking hole (328) on the mandrel sleeve (32) are uniformly arranged in the circumferential direction of the corresponding height respectively, an outer ring guide post (331) on a first segmentation outer ring (33), a second segmentation outer ring (34), a third segmentation outer ring (35), a fourth segmentation outer ring (36), a fifth segmentation outer ring (37) and a sixth segmentation outer ring (38) is connected on an outer ring guide post hole (324) on a mandrel sleeve (32) in a sliding mode, the diameter of the outer ring guide post hole (324) is slightly larger than that of the outer ring guide post (331), an outer ring top ball (333) is abutted to a middle groove (314), two ends of a tension spring (39) are respectively connected to a second tension spring ring (325) and a first tension spring ring (334), the section shape of an outer ring part of the first segmentation outer ring (33) is small outside and large inside and is convex, the right side surface of the second segmentation outer ring (34) is in contact with the left side surface of the first segmentation outer ring (33), and the section shape of the second segmentation outer ring (34) is large outside and small inside, the left side surface of the third segmentation outer ring (35) is in contact with the right side surface of the first segmentation outer ring (33), the cross section of the third segmentation outer ring is large in outside and small in inside, the fourth segmentation outer ring (36), the fifth segmentation outer ring (37) and the sixth segmentation outer ring (38) are uniformly segmented, the right side of the fourth segmentation outer ring (36) is in contact with the left side of the second segmentation outer ring (34), the right side of the fifth segmentation outer ring (37) is in contact with the left side of the fourth segmentation outer ring (36), the right side of the sixth segmentation outer ring (38) is in contact with the left side of the fifth segmentation outer ring (37), and the left side of the sixth segmentation outer ring is in contact with the right side of the third segmentation outer ring (35);

the mandrel circulating assembly line (6) is arranged in the middle of the first dispatching device (1) and the second dispatching device (2), the center line of the mandrel circulating assembly line (6) is aligned with the center line of the guide rails on one side of the first dispatching device (1) and the second dispatching device (2), the blank tube feeding assembly line (5) is positioned right above the mandrel circulating assembly line (6), and the height position of the blank tube feeding assembly line is lower than the guide rail above the first dispatching device;

the rolling mill (9) is located between the rolling mill outlet assembly line (10) and the rolling mill inlet assembly line (11), the rolling mill outlet assembly line (10) and the rolling mill inlet assembly line (11) are located on the same central line and located between the first scheduling device (1) and the second scheduling device (2), the rolling mill outlet assembly line (10) is located on the right side of the rolling mill (9) and matched with the second scheduling device (2), the rolling mill inlet assembly line (11) is located on the left side of the rolling mill (9) and matched with the first scheduling device (1), the central lines of the rolling mill (9), the rolling mill outlet assembly line (10) and the rolling mill inlet assembly line (11) are aligned with the central lines of guide rails on the other sides of the first scheduling device (1) and the second scheduling device (2), the height positions of the rolling outlet assembly line (10) and the rolling mill inlet assembly line (11) are the same, the rolling central line of the rolling mill (9) is aligned with the central lines of the mandrel (3) transported by the rolling outlet assembly line (10) and the rolling inlet assembly line (11), and a mandrel locking device (7) and a left and right mandrel limiting device (8) are arranged on the right side of the rolling outlet assembly line (10).

2. The production apparatus for a rolling mill with a mandrel bar according to claim 1, wherein: the rollers of all the assembly lines are linked and controlled by the assembly line motor.

3. The production apparatus for a rolling mill with a mandrel bar according to claim 1, wherein: the surface materials of the rollers of all the production lines are wear-resistant and high-temperature-resistant materials.

4. The production apparatus for a rolling mill with a mandrel bar according to claim 1, wherein: the distance between the leftmost roller of the blank pipe feeding assembly line (5) and the first scheduling device (1) is greater than the length of the mandrel (3).

5. The production apparatus for a rolling mill with a mandrel bar according to claim 1, wherein: the middle of the right side of the mandrel circulating assembly line (6) is provided with a section of neutral position which is longer than the finished product pipe (12) and shorter than the mandrel (3), and the neutral position is an outflow port of the finished product pipe (12).

Images