CN109676040B

CN109676040B - Pipe sizing mill

Info

Publication number: CN109676040B
Application number: CN201811606404.XA
Authority: CN
Inventors: 冯伟杰; 朱志峰; 梁波; 蔡之挺; 王韬程; 王明旺
Original assignee: Shouhua Electromechanical Shanghai Co ltd
Current assignee: Shouhua Electromechanical Shanghai Co ltd
Priority date: 2018-12-27
Filing date: 2018-12-27
Publication date: 2021-06-15
Anticipated expiration: 2038-12-27
Also published as: CN109676040A

Abstract

The invention discloses a pipe sizing mill which comprises a rack, a standard supporting mechanism and a driving system, wherein the standard supporting mechanism and the driving system are arranged on the rack, the standard supporting mechanism comprises a supporting table and a supporting disc, the supporting disc is detachably arranged on the supporting table, sizing components suitable for different pipe processing technologies are detachably arranged on the supporting disc, and the driving system is connected with and drives the standard supporting mechanism and/or the sizing components. The invention can realize multifunctional sizing on the same sizing mill, can meet the requirements of different pipe fitting processing technologies by only replacing different sizing components, utilizes the transfer device to transfer the supporting disk, realizes automatic pushing transfer through the air cylinder, has small transfer resistance, high utilization rate of the standard supporting mechanism and saves cost.

Description

Pipe sizing mill

Technical Field

The invention belongs to the field of tube sizing processing devices, and particularly relates to a tube sizing mill.

Background

The pipe fitting is widely applied to daily life and industrial production, the sleeving between the pipe fittings can be seen everywhere in a pipe network, the sleeving condition is met in that two ends to be sleeved are respectively a narrow end and a wide end, the pipe diameter of the narrow end is smaller than that of the wide end, and the narrow end is sleeved into the wide end to realize sleeving connection. The pipe diameter of the purchased pipe fitting is fixed according to the design requirement, and when two pipe fittings are sleeved or one pipe fitting is sleeved with an equipment port, the port of the pipe fitting to be sleeved is expanded or reduced in diameter, or the pipe diameter of a certain pipe fitting is integrally changed. The existing sizing mill has a monotonous process and can only realize single type of sizing. Different processing dies are needed for expanding or reducing the diameter of the pipe fitting, and different dies are needed when the outer diameter size of the pipe fitting to be expanded or reduced has larger difference, so that the utilization rate of equipment is low, and the cost is high.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide the pipe sizing mill which can realize multifunctional sizing on the same sizing mill, can meet the requirements of different pipe processing technologies by only replacing different sizing components, utilizes a transfer device to transfer a supporting disk, realizes automatic pushing transfer through an air cylinder, has small transfer resistance, high utilization rate of a standard supporting mechanism and saves cost.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a pipe sizing mill, its characterized in that, includes frame, standard supporting mechanism and actuating system, and standard supporting mechanism and actuating system install in the frame, and standard supporting mechanism includes brace table and supporting disk, and supporting disk demountable installation is on brace table, and the sizing part demountable installation that is suitable for different pipe fitting processing technology is on the supporting disk, and actuating system connects and drives standard supporting mechanism and/or sizing part.

The supporting disk is arranged on the supporting platform in a sliding manner.

Be equipped with the cylinder in the frame, cylinder one end is installed in the frame, and the connection supporting disk can be dismantled to the other end.

The supporting plate is provided with a handle, and the other end of the air cylinder can be detachably hooked with the handle.

The pipe fitting that waits to process is located the center of supporting disk, and the axis of pipe fitting and the surface perpendicular setting of supporting disk.

The driving system is positioned below the supporting disk.

The center of the supporting disk is provided with a through hole penetrating through the supporting disk.

The supporting platform comprises an upper platform surface, the upper platform surface comprises a die changing groove, and the supporting disk is arranged on the upper platform surface along the die changing groove in a sliding mode.

The die changing groove penetrates through the board surface of the upper table surface from one side of the upper table surface in a concave mode.

And the near front ends of the upper table surfaces on the two sides of the die changing groove are respectively provided with a die lifting device.

At least one row of steel ball rollers are respectively arranged at the two sides of the die changing groove close to the rear end, the steel ball rollers in each row are uniformly arranged, and the arrangement direction of the steel ball rollers in each row is parallel to the length direction of the die changing groove.

And two sides of the die changing groove are respectively provided with a cam mounting group, a plurality of cam bearing followers are arranged on the cam mounting groups, and the cam bearing followers are arranged in a rotating manner in situ.

The cam mounting group is positioned on one side of the die lifter, which is far away from the die changing groove.

The steel ball roller and the die lifter are positioned on the same side of the cam mounting group.

The cam mounting group comprises a first cam mounting plate and a second cam mounting plate which are arranged on the same straight line at intervals, the length directions of the first cam mounting plate and the second cam mounting plate are overlapped and are parallel to the length direction of the die change groove, and a plurality of cam bearing followers are uniformly mounted on the first cam mounting plate and the second cam mounting plate along the length directions of the first cam mounting plate and the second cam mounting plate.

When the supporting table is arranged on the upper table surface along the die changing groove in a sliding mode, the steel ball idler wheel and the cam bearing follower are in sliding contact with the supporting table.

The supporting table comprises a clamping device, and the clamping device can detachably press the supporting disc.

The clamping device comprises two mold clamping devices which are respectively positioned at two sides of the mold changing groove.

The clamping device is located at the space between the first cam mounting plate and the second cam mounting plate.

The standard supporting mechanism further comprises a pushing module, the pushing module is installed on the supporting plate, and the pushing module is connected with and drives the sizing component.

The pushing module comprises an inner die, and the inner die is movably sleeved outside the pipe fitting.

The inner die comprises a plurality of inner die units which are coaxially and movably spliced in sequence by taking the axis of the pipe fitting as a central shaft.

The outer side surface of the inner die unit, which is far away from the pipe fitting, is a conical surface and is gradually far away from the axis of the pipe fitting towards the supporting disc.

The pushing module further comprises an outer die, the outer die is movably sleeved outside the inner die, and the inner side surface of the outer die is attached to the outer side surface of the inner die.

The outer die and the supporting disc are arranged in parallel at intervals.

The geometric center of the outer die is coincident with the axis of the pipe fitting.

The outer mold is a rectangular disk.

The driving system is connected with and drives the outer die to move along the central axis direction of the supporting disk.

The sizing mill further comprises a transfer device, and the transfer device is provided with a die discharging groove connected with the die changing groove.

The transfer device is detachably connected with the sizing mill.

The transfer device is connected with the sizing mill through a clamping device.

The transfer device comprises an engagement surface, and the engagement surface is provided with a die outlet groove.

The joining surface and the upper table-board are positioned on the same horizontal plane.

The die cavity penetrates through the board surface of the joint surface from one side of the joint surface in a concave mode.

The width of the die discharging groove is equal to that of the die changing groove.

Two sides of the die discharging groove are respectively provided with at least one row of steel ball rollers, a plurality of steel ball rollers in each row are uniformly arranged, and the arrangement direction of the steel ball rollers in each row is parallel to the length direction of the die discharging groove.

When the opening of the die discharging groove and the opening of the die changing groove are spliced and closed, the steel ball rollers on the two sides of the die discharging groove are respectively positioned on the extension lines of the steel ball rollers on the two sides of the die changing groove.

And when the die discharging groove and the die changing groove are spliced and closed, the two hooks are respectively hooked with one hook pin.

Compared with the prior art, the invention has the beneficial effects that: the multifunctional sizing on the same sizing mill can be realized, and different kinds of pipe fitting processing technologies can be met only by replacing different sizing parts; the transfer device is used for transferring or disassembling the support disc and then checking, automatic pushing transfer is realized through the air cylinder, and transfer resistance is small; the standard supporting mechanism has high utilization rate and saves cost.

Drawings

FIG. 1 is a schematic structural diagram of one embodiment of the present invention;

FIG. 2 is a schematic view of a rack configuration according to an embodiment of the present invention;

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a rear view of FIG. 2;

FIG. 5 is a schematic diagram of a drive system according to an embodiment of the present invention;

FIG. 6 is a front view of FIG. 5;

FIG. 7 is a schematic view of a support stage according to an embodiment of the present invention;

FIG. 8 is a top view of FIG. 7;

FIG. 9 is a schematic structural view of a flare sizing die of one embodiment of the present invention;

FIG. 10 is a schematic view of another perspective of a flare sizing die in accordance with an embodiment of the present invention;

FIG. 11 is a cross-sectional view of FIG. 10;

FIG. 12 is a top view of FIG. 9;

FIG. 13 is a schematic view of the configuration of the necking and sizing die of the present invention;

FIG. 14 is a schematic view of another aspect of the necking and sizing die of the present invention;

FIG. 15 is a cross-sectional view of FIG. 14;

fig. 16 is a top view of fig. 13.

Detailed Description

The present invention will be described more fully with reference to the following examples. The following examples are illustrative only and are not to be construed as limiting the invention.

A tube sizing mill, as shown in fig. 1-16, includes a frame, a drive system, a standard support mechanism, and a transfer device.

The rack is a square frame as shown in fig. 2 to 4, the rack has an accommodating cavity therein, and the driving system and the standard supporting mechanism are located in the accommodating cavity of the rack. One side of the frame is an opening side, the opening side is an opening state, an operator can conveniently operate the device in the accommodating cavity, and the side opposite to the opening side is a safety door which can be opened or closed. The frame on the opening side of the frame is provided with a grating cover 11, an operation box 12 and a starting box bracket 13. A frame on the safety door side of the frame is provided with a triple box 14, an electromagnetic valve 15 and a three-point combination 16. The frame is provided with a cylinder.

The driving system comprises a base 1, a screw rod mechanism, a belt wheel mechanism and a driving mechanism, wherein the driving mechanism is connected with the screw rod mechanism through the belt wheel mechanism and drives the screw rod mechanism to move, as shown in fig. 5 and 6. The screw mechanism includes a ball screw 24, four guide rods 23, and a lower link plate 21 and a slide plate 22 which are horizontally arranged. The lower connecting plate 21 and the sliding plate 22 are rectangular plates which are arranged in parallel at intervals and have basically the same size, and the central connecting line of the lower connecting plate 21 and the sliding plate 22 is vertical to the lower connecting plate 21 and the sliding plate 22. The guide rods 23 are parallel to the central connecting line, and four guide rods 23 penetrate through the lower connecting plate 21 and the sliding plate 22 and are respectively positioned at four corners of the lower connecting plate 21 and the sliding plate 22. The outer diameter of the part of the guide rod 23 penetrating through the lower connecting plate 21 is smaller than the outer diameter of the other part of the guide rod 23, a nut 231 is arranged at the end part of the guide rod 23 below the lower connecting plate 21, and the guide rod 23 and the lower connecting plate 21 are connected and fixed through the nut 231. The upper ends of the guide rods 23 are connected to the base 1, and the four guide rods 23, the lower connecting plate 21 and the sliding plate 22 are used for supporting and fixing the whole screw mechanism, so that the ball screw 24 can move in the direction vertical to the horizontal direction. The guide rod 23 above the sliding plate 22 is externally sleeved with an oilless bushing 232. The ball screw 24 vertically passes through the centers of the lower connecting plate 21 and the sliding plate 22, the upper end and the lower end of the ball screw 24 are respectively connected with the oil cylinder joint 241 and the belt wheel mechanism, and the oil cylinder joint 241 is used for connecting with a standard supporting mechanism. The lower end of the oil cylinder joint 241 is connected with a lower connecting rod 242, the lower connecting rod 242 is sleeved outside the ball screw 24 and is in threaded connection with the ball screw 24, the ball screw 24 is driven to rotate, the lower connecting rod 242 is pushed to move along the length direction of the ball screw 24, the oil cylinder joint 241 is driven to move synchronously, and the oil cylinder joint 241 drives a standard supporting mechanism to expand or reduce the diameter of a pipeline. The ball screw 24 is connected to the lower connecting plate 21 through a screw bearing assembly 243. The driving mechanism comprises a servo motor 25 and a speed reducing motor 26, and the servo motor 25 is connected with and drives the speed reducing motor 26. The speed reducing motor 26 is installed on the servo seat 262 through the motor plate 261, the adjusting seat 263 is arranged on the servo seat 262, the adjusting screw 264 penetrates through the adjusting seat 263 and then is connected with the motor plate 261, and the adjusting screw 264 and the adjusting seat 263 adjust and fix the motor plate 261. The servo holder 262 is connected to the positioning plate 265, and the positioning plate 265 is connected and fixed to the base 1 by the second positioning pin 266. The belt wheel mechanism comprises a first key-free synchronous belt wheel 27, a second key-free synchronous belt wheel 28 and a belt 29, the two ends of the belt 29 are respectively sleeved with the first key-free synchronous belt wheel 27 and the second key-free synchronous belt wheel 28, the first key-free synchronous belt wheel 27 is connected with a motor shaft of a speed reducing motor 26, the second key-free synchronous belt wheel 28 is connected with the lower end of a ball screw 24, a servo motor 25 reduces the speed through the speed reducing motor 26 and drives the ball screw 24 through the first key-free synchronous belt wheel 27, the belt 29 and the second key-free synchronous belt wheel 28 in a transmission mode, and the ball screw 24 is driven to rotate.

The standard support mechanism comprises a support table and a support plate 4, as shown in fig. 7 and 8, the support table being located on the base 1 above the drive system. The supporting table comprises an upper table top 31, a bottom plate 32, a supporting plate 33 and a clamping device, the upper table top 31 and the bottom plate 32 are both rectangular in shape, the area of the upper table top 31 is larger than that of the bottom plate 32, the upper table top 31 and the bottom plate 32 are arranged in parallel at intervals, the supporting plate 33 surrounds three sides between the upper table top 31 and the bottom plate 32, and one side is an opening. The bottom plate 32 is provided with a through hole penetrating through the bottom plate 32, and when the support plate 4 is positioned on the upper table surface 31 and fixed, the through hole of the bottom plate 32 is positioned right above the oil cylinder joint 241 of the driving system. The upper table 31 has a mold changing groove, which is a notch, and the mold changing groove penetrates through the surface of the upper table 31 along one side of the upper table 31 in a concave manner to form a concave shape. The orientation of the upper table 31 is defined: the open end of the die changing groove is the rear end, and the end opposite to the rear end is the front end. The supporting table is located in an accommodating cavity of the rack, the rear end of the upper table surface 31 faces the safety door of the rack, and the front end of the upper table surface 31 faces the opening side of the rack. The front end of the upper table surface 31 is provided with a switch cover 311, a proximity switch 312, a rear positioning block 313 and a hydraulic buffer 314. The mold lifting device 34 is respectively arranged at the two sides of the mold changing groove of the upper table surface 31 near the front end, two rows of steel ball rollers 35 are respectively arranged at the two sides of the mold changing groove near the rear end, the steel ball rollers 35 in each row are uniformly arranged, and the arrangement direction of the steel ball rollers 35 in each row is parallel to the length direction of the mold changing groove. Two sides of the die change groove of the upper table surface 31 are respectively provided with a cam mounting group, and the cam mounting groups are positioned on the outer sides of the die lifter 34 and the steel ball roller 35 and protrude out of the upper table surface 31. The cam mounting group comprises a first cam mounting plate 36 and a second cam mounting plate 37 which are arranged on a straight line at intervals, and the length directions of the first cam mounting plate 36 and the second cam mounting plate 37 are overlapped and are parallel to the length direction of the die change groove. A plurality of cam bearing followers 361 are uniformly mounted on the first cam mounting plate 36 and the second cam mounting plate 37 along the length direction thereof, and the cam bearing followers 361 are rotatably disposed in situ. The supporting disc 4 is rectangular in shape, the supporting disc 4 is slidably arranged on the upper table surface 31 along the die change groove, and the width of the supporting disc 4 is equal to the distance between the two cam mounting groups, in other words, the distance between the two first cam mounting plates 36 or the distance between the two second cam mounting plates 37. The pipe fitting to be processed is positioned in the center of the supporting disc 4, and the axis of the pipe fitting is perpendicular to the surface of the supporting disc 4. The center of the supporting disk 4 is provided with a through hole penetrating through the supporting disk, the supporting disk 4 is provided with a handle 41 and a pull ring 42, the handle 41 is convenient for an operator to hold or machine to pull, and the pull ring 42 is convenient for hoisting the whole die. When the supporting plate 4 is slidably arranged on the upper table top 31 along the die change groove, the steel ball roller 35 and the cam bearing follower 361 are in contact with the supporting plate 4 and roll or rotate along with the sliding of the supporting plate 4, the friction force generated when the supporting plate 4 slides is greatly reduced by the rolling of the steel ball roller 35 and the rotation of the cam bearing follower 361, and the supporting plate 4 can conveniently enter or leave the upper table top 31. The cylinder on the frame can be dismantled and connect supporting disk 4, and is preferred, and the one end hook of cylinder is hung on handle 41, drives supporting disk 4 and slides at last mesa 31, and the cylinder electricity is connected operation box 12. The first cam mounting plate 36 and the second cam mounting plate 37 are fixedly connected to the upper table 31 by a first positioning pin 362. The clamping device comprises two die clamps 38, the die clamps 38 are arranged at the interval between the first cam mounting plate 36 and the second cam mounting plate 37, and the two die clamps 38 are used for clamping and fixing the supporting plate 4. The two die holders 38 are respectively clamped in grooves on two sides of the die change groove, the die holders 38 are connected with the baffle 381, the baffle 381 abuts against two sides of the upper table top 31, and the baffle 381 is fixed on the upper table top 31 through the rotating shaft 382. The near-rear ends of the two sides of the mold changing groove are respectively provided with a bolt 315, and the two bolts 315 can be taken out and inserted into the jacks of the upper table-board 31. When the supporting plate 4 is on the upper table 31, the plug 315 is inserted into the jack to block the supporting plate 4 on the upper table 31 from sliding out of the upper table 31, and when the supporting plate 4 is about to enter the upper table 31 or exit the upper table 31, the plug 315 is pulled out from the jack to release the block of the plug 315. A hook pin 316 is fixed to each of the two cam mounting sets near the rear end.

The transfer device is connected with the support platform, as shown in fig. 1, the transfer device comprises a connection surface 61 which is located on the same horizontal plane with the upper table-board 31, the connection surface 61 is used for loading the support disk 4, a mold outlet groove is arranged on the connection surface 61, and the mold outlet groove penetrates through the board surface of the connection surface 61 along one side of the connection surface 61 in a concave manner to form a concave shape. The width of the die discharging groove is equal to the width of the die changing groove of the upper table surface 61, two rows of steel ball rollers 35 are respectively arranged on two sides of the die discharging groove, the steel ball rollers 35 in each row are uniformly arranged, and the arrangement direction of the steel ball rollers 35 in each row is parallel to the length direction of the die discharging groove. The transfer device is movable, and the bottom of transfer device is equipped with brake wheel and tight pulley for remove with fixed transfer device. Two hooks 62 are respectively fixed on two sides of the opening end of the mold stripping groove of the transfer device, and two hooks 62 are respectively hooked with a hook pin 316. The transfer device is pushed to move to the opening of the die discharging groove and the opening of the die changing groove of the upper table top 31 to be spliced and gathered, at the moment, the steel ball rollers 35 on the two sides of the die discharging groove are respectively positioned on the extension lines of the steel ball rollers 35 on the two sides of the die changing groove of the upper table top 31, two hooks 62 are respectively hooked with one hook pin 316, and the fixed wheel is closed, so that the transfer device is fixedly connected with the die changing mechanism. The transfer device is used for transferring the supporting disc 4 on the upper table-board 31, and the opening of going out the chase and the opening concatenation of going up the 31 retooling of mesa are closed to after fixed transfer device, make the brace table on the upper table-board 31 along retooling and play chase remove to transfer device's linkage face 61, perhaps remove the brace table on transfer device's linkage face 61 to supreme mesa 31, the cylinder drives the brace table and removes along retooling and play chase.

The sizing component suitable for different pipe fitting processing technologies is detachably mounted on the supporting disk and comprises a necking sizing component for shrinking a pipe orifice, a flaring sizing component for expanding the pipe orifice and an integral flaring sizing component for expanding the integral diameter of the pipe fitting. For a necking sizing die for a shrinking pipe orifice and a flaring sizing die for an expanding pipe orifice, the standard supporting mechanism further comprises a pushing module, the pushing module is installed on the supporting plate 4, and the pushing module is connected with and drives the sizing component. The pushing module comprises an inner mold 52 and an outer mold 51, the inner mold 52 is movably sleeved outside the pipe fitting, and the outer mold 51 is movably sleeved outside the inner mold 52. The inner die 52 comprises a plurality of inner die units 521, the inner die units 521 are sequentially and coaxially movably spliced by taking the axis of the pipe fitting as a central axis, the outer side face, away from the pipe fitting, of the inner die units 521 is a conical face and gradually away from the axis of the pipe fitting towards the supporting plate 4, and the inner side face of the outer die 51 is attached to the outer side face of the inner die 52. The outer die 51 is a rectangular disc and is arranged in parallel with the supporting disc 4 at intervals, and the geometric center of the outer die 51 is coincident with the axis of the pipe fitting. The center of the outer die 51 is provided with a through hole penetrating through the outer die, the inner die 52 penetrates through the through hole, and the outer die 51 is sleeved outside the inner die 52. The wall surface of the through hole of the outer die 51 is an inclined surface and gradually departs from the pipe axis towards the supporting disk 4. The wall surface of the through hole of the outer mold 51 is attached to the outer side surface of the inner mold unit 521.

As shown in FIGS. 9 to 12, the flaring sizing die comprises a clamping piece 4 ', a first expanding core 5 ', a first flaring die block 6 ' and a sizing sleeve 7. The clamping piece 4 'is movably sleeved between the pipe fitting and the inner die 52, the clamping piece 4' is of a multi-petal structure and comprises a plurality of clamping piece units 41 ', the plurality of clamping piece units 41' are arranged around the outside of the pipe fitting to be processed, and the axial line of the pipe fitting is used as a central shaft to be coaxially and movably spliced in sequence. The gripper unit 41' is parallel to the inner side surface of the pipe and the outer surface of the pipe near the pipe. The function of the gripping member 4' is to grip the tube during flaring. Preferably, the number of the inner mold units 521 is the same as the number of the holder units 41 ', and each inner mold unit 521 contacts one holder unit 41 ', and the inner side of the inner mold unit 521 contacts the outer side of the holder unit 41 '. The first core expansion 5 ' comprises a plurality of first core expansion units 51 ', and the plurality of first core expansion units 51 ' are coaxially and movably spliced in sequence by taking the axis of the pipe fitting as a central axis. The pipe fitting to be processed is sleeved outside the first expansion core 5 ', and the first expansion core 5 ' is positioned below the clamping piece 4 '. The first flaring module 6 'vertically penetrates through the center of the supporting plate 4, one end of the first flaring module 6' is a conical end, a plurality of first core expansion units 51 'are arranged outside the conical end in a surrounding manner, the outer side surface of the conical end is a conical surface, and the outer side surface of the conical end is attached to the inner side surface of the first core expansion unit 51'. The tapered end and the pipe fitting are arranged on the same side, and the outer side surface of the tapered end is a tapered surface with a large upper part and a small lower part, namely the outer side surface of the tapered end is gradually close to the axis of the pipe fitting towards the supporting disc 4. The first flaring module 6' and the end opposite the tapered end are connected to the drive system of the sizing system. The outer side surface of the first core expansion unit 51' is in a step shape. The sizing sleeve 7 is sleeved outside the pipe fitting, is positioned below the clamping piece 4' and is arranged at intervals with the pipe fitting. The step of the outer side surface of the first core expanding unit 51' is positioned inside the pipe on the support plate 4. The step-shaped design of the outer side surface of the first core expansion unit 51 ' enables the protruding steps of the first core expansion unit 51 ' to contact with the inner part of the pipe fitting, when the first core expansion unit 5 ' expands, the pipe fitting in contact with the steps is expanded locally, and the pipe diameter of the rest part of the pipe fitting is kept unchanged. The sizing sleeve 7 is positioned outside the part of the pipe fitting to be expanded, and the inner diameter of the sizing sleeve 7 is equal to the outer diameter of the pipe fitting after the pipe fitting is expanded. The sizing sleeve 7 serves to define the size of the flare.

The working process of the flaring sizing die is as follows: when the pipe fitting to be processed is located on the supporting plate 4, the driving system drives the outer die 51 to move downwards, the outer die 51 sequentially pushes the inner die unit 521 and the clamping element units 41 ', so that the plurality of clamping element units 41' are gathered together and shrunk and evenly attached to the outer wall of the pipe fitting, and a clamping effect is formed on the pipe fitting. The driving system drives the first flaring module 6 ' to move downwards, the conical end of the first flaring module 6 ' pushes the plurality of first core expansion units 51 ' to move, so that the first core expansion 5 ' expands, the step of the outer side wall of the first core expansion unit 51 ' contacts and expands the port part of the pipe fitting, the diameter of the port of the pipe fitting is expanded, the port of the pipe fitting expands until the outer side wall of the expanded part abuts against the sizing sleeve 7, and flaring is completed.

The necking and sizing component comprises a sandwich core 4 ', four pull rods 5' and a driving component as shown in figures 13-16. The core 4' is movably sleeved between the pipe fitting and the inner mold 52. The sandwich core 4 'is of a multi-petal structure and comprises a plurality of sandwich units 41', the sandwich units 41 'are arranged outside the pipe fitting to be processed in a surrounding mode, and the sandwich units 41' are sequentially and movably spliced coaxially with the axis of the pipe fitting as a central shaft. The inner side surface of the sandwich unit 41 'close to the pipe fitting is in a step shape, preferably in an L shape, namely the lower end of the inner side surface of the sandwich unit 41' close to the supporting plate 4 is closer to the pipe fitting than the upper end far away from the supporting plate 4, and the upper end of the inner side surface is parallel to the outer wall surface of the pipe fitting, so that the pipe fitting can be stably clamped in the necking process. The number of inner mold units 521 is the same as the number of sandwich units 41 ", and each inner mold unit 521 contacts one sandwich unit 41". The pull rods 5 'vertically penetrate through the supporting plate 4, and four pull rods 5' are uniformly arranged outside the inner die 52. The driving component comprises a linkage disc 61 ' and a driving joint 62 ', and the pull rod 5 ', the linkage disc 61 ' and the driving joint 62 ' are sequentially connected. The linkage disc 61 ' and the supporting disc 4 are arranged in parallel at intervals, two ends of the pull rod 5 ' are respectively connected with the outer die 51 and the linkage disc 61 ', and two ends of the driving joint 62 ' are respectively connected with the center of the linkage disc 61 ' and a driving system of the sizing system.

The working process of the necking and sizing die is as follows: the driving system is connected with and drives the driving joint 62 ' to move away from the supporting plate 4 along the axial direction of the pipe fitting, namely, move downwards in the attached drawing, the driving joint 62 ' drives the linkage disc 61 ' and the four pull rods 5 ' to move downwards, the outer die 51 integrally moves downwards under the uniform force application of the four pull rods 5 ', in the process, the inclined surface of the through hole of the outer die 51 applies pressure to the tapered outer side surface of the inner die unit 521, the inner die unit 521 is pushed to move towards the axial direction of the pipe fitting, the inner die units 521 sequentially push the sandwich units 41 ' in contact with the inner die units, the inner diameter of the sandwich 4 ' formed by the sandwich units 41 ' is gradually reduced, and the protruding part at the lower end of the clamping surface of the sandwich unit 41 ' compresses the pipe.

The integral diameter expanding and sizing component of the integral diameter expanding and sizing die comprises a second expanding core and a second flaring die. The second core that rises is located supporting disk 4, and the pipe fitting cover of treating processing is located the second and is risen the core outside, and the second core that rises includes polylith second and rises the core unit, and polylith second rises the core unit with the axis of pipe fitting is the coaxial activity concatenation in proper order of center pin, and the lateral surface that the core unit was risen to the second is smooth curved surface, is on a parallel with the pipe fitting internal face, and the core unit medial surface that rises is risen to the second is close to gradually towards supporting disk 4 the pipe fitting axis. The second flaring module vertically passes through the center of the supporting disc 4, one end of the second flaring module is a conical end, a plurality of second expansion core units are arranged outside the conical end in an enclosing manner, the outer side surface of the conical end is a conical surface, the outer side surface of the conical end is attached to the inner side surface of the second expansion core unit, and the outer side surface of the conical end of the second flaring module is gradually close to the axis of the pipe fitting in the direction of the supporting disc 4. The second flaring module and the end opposite to the conical end are connected with a driving system of the sizing system.

The working process of the integral diameter expanding and sizing die is as follows: when the driving system drives the second flaring module to move downwards, the conical end of the second flaring module pushes the second expanding core to enable the plurality of second expanding core units to move, the second expanding core expands, and the outer side wall of the second expanding core unit is attached to the inner wall surface of the pipe fitting to push the pipe fitting to expand integrally.

Finally, it must be said here that: the above embodiments are only used for further detailed description of the technical solutions of the present invention, and should not be understood as limiting the scope of the present invention, and the insubstantial modifications and adaptations made by those skilled in the art according to the above descriptions of the present invention are within the scope of the present invention.

Claims

1. A pipe sizing mill is characterized by comprising a rack, a standard supporting mechanism and a driving system, wherein the standard supporting mechanism and the driving system are installed on the rack, the standard supporting mechanism comprises a supporting table and a supporting disc (4), the supporting disc (4) is detachably installed on the supporting table, sizing components suitable for different pipe processing technologies are detachably installed on the supporting disc (4), and the driving system is connected with and drives the standard supporting mechanism and/or the sizing components; one side surface of the rack is an opening side, the side surface opposite to the opening side is a safety door which can be opened or closed, and a frame on the safety door side of the rack is provided with a triple box (14), an electromagnetic valve (15) and a three-point combination (16); supporting disk (4) are slided and are located on the brace table, are equipped with the cylinder in the frame, and cylinder one end is installed in the frame, and connection supporting disk (4) can be dismantled to the other end, and the brace table includes mesa (31), goes up mesa (31) including the retooling groove, and mesa (31) are slided and are located along the retooling groove to supporting disk (4).

2. A tube sizing mill according to claim 1 wherein: a handle (41) is arranged on the supporting plate (4), and the other end of the cylinder can be detachably hooked with the handle (41).

3. A tube sizing mill according to claim 1 wherein: the pipe fitting to be processed is positioned in the center of the supporting disc (4), and the axis of the pipe fitting is perpendicular to the surface of the supporting disc (4).

4. A tube sizing mill according to claim 3 wherein: the driving system is positioned below the supporting disc (4).

5. A tube sizing mill according to claim 4 wherein: the center of the supporting disk (4) is provided with a through hole penetrating through the supporting disk (4).

6. A tube sizing mill according to claim 1 wherein: the die change groove penetrates through the plate surface of the upper table surface (31) from one side of the upper table surface (31) in a concave mode.

7. A tube sizing mill according to claim 6 wherein: the near front ends of the upper table surfaces (31) at two sides of the die changing groove are respectively provided with a die lifting device (34).

8. The tube sizing mill of claim 7 wherein: the die changing groove is characterized in that at least one row of steel ball rollers (35) are respectively arranged at the two sides of the die changing groove close to the rear end, the steel ball rollers (35) in each row are uniformly arranged, and the arrangement direction of the steel ball rollers (35) in each row is parallel to the length direction of the die changing groove.

9. The tube sizing mill of claim 8 wherein: two sides of the die changing groove are respectively provided with a cam installation set, a plurality of cam bearing followers (361) are arranged on the cam installation sets, and the cam bearing followers (361) are arranged in a rotating mode in situ.

10. The tube sizing mill of claim 9 wherein: the cam mounting set is located on the side of the die lifter (34) away from the die change groove.

11. The tube sizing mill of claim 10 wherein: the steel ball roller (35) and the die lifter (34) are positioned on the same side of the cam mounting group.

12. The tube sizing mill of claim 11 wherein: the cam mounting group comprises a first cam mounting plate (36) and a second cam mounting plate (37) which are arranged on a straight line at intervals, the length directions of the first cam mounting plate (36) and the second cam mounting plate (37) are overlapped and are parallel to the length direction of the die change groove, and a plurality of cam bearing followers (361) are uniformly mounted on the first cam mounting plate (36) and the second cam mounting plate (37) along the length directions of the cam bearing followers.

13. The tube sizing mill of claim 12 wherein: when the supporting platform is arranged on the upper table top (31) along the die changing groove in a sliding mode, the steel ball roller (35) and the cam bearing follower (361) are in sliding contact with the supporting platform.

14. A tube sizing mill according to any one of claims 1 to 13, wherein: the support table comprises a clamping device which detachably presses the support disc (4).

15. The tube sizing mill of claim 14 wherein: the clamping device comprises two die clamps (38), and the two die clamps (38) are respectively positioned at two sides of the die changing groove.

16. The tube sizing mill of claim 15 wherein: the clamping means is located at the spacing between the first cam mounting plate (36) and the second cam mounting plate (37).

17. A tube sizing mill according to any one of claims 1 to 13, wherein: the standard supporting mechanism further comprises a pushing module, the pushing module is installed on the supporting plate (4), and the pushing module is connected with and drives the sizing component.

18. The tube sizing mill of claim 17 wherein: the pushing module comprises an inner die (52), and the inner die (52) is movably sleeved outside the pipe fitting.

19. The tube sizing mill of claim 18 wherein: the inner die (52) comprises a plurality of inner die units (521), and the inner die units (521) are coaxially and sequentially movably spliced by taking the axis of the pipe fitting as a central axis.

20. The tube sizing mill of claim 19 wherein: the outer side surface of the inner die unit (521), which is far away from the pipe fitting, is a conical surface, and is gradually far away from the axis of the pipe fitting towards the direction of the supporting plate (4).

21. The tube sizing mill of claim 20 wherein: the pushing module further comprises an outer die (51), the outer die (51) is movably sleeved outside the inner die, and the inner side surface of the outer die (51) is attached to the outer side surface of the inner die.

22. The tube sizing mill of claim 20 wherein: the outer die (51) and the support disc (4) are arranged in parallel at intervals.

23. The tube sizing mill of claim 22 wherein: the geometric center of the outer die (51) is coincident with the axis of the pipe fitting.

24. The tube sizing mill of claim 23 wherein: the outer mold (51) is a rectangular disk.

25. The tube sizing mill of claim 24 wherein: the driving system is connected with and drives the outer die (51) to move along the central axis direction of the supporting disk (4).

26. A tube sizing mill according to claim 1 wherein: the sizing mill further comprises a transfer device, and the transfer device is provided with a die discharging groove connected with the die changing groove.

27. The tube sizing mill of claim 26 wherein: the transfer device is detachably connected with the sizing mill.

28. The tube sizing mill of claim 27 wherein: the transfer device is connected with the sizing mill through a clamping device.

29. The tube sizing mill of claim 28 wherein: the transfer device comprises an engagement surface (61), and the engagement surface (61) is provided with a die outlet groove.

30. The tube sizing mill of claim 29 wherein: the engagement surface (61) and the upper table-board (31) are positioned on the same horizontal plane.

31. The tube sizing mill of claim 30 wherein: the die-out groove penetrates through the plate surface of the connecting surface (61) from one side of the connecting surface (61) in a concave mode.

32. The tube sizing mill of claim 31 wherein: the width of the die discharging groove is equal to that of the die changing groove.

33. The tube sizing mill of claim 32 wherein: two sides of the die discharging groove are respectively provided with at least one row of steel ball rollers (35), a plurality of steel ball rollers (35) in each row are uniformly arranged, and the arrangement direction of the steel ball rollers (35) in each row is parallel to the length direction of the die discharging groove.

34. The tube sizing mill of claim 33 wherein: when the opening of the die discharging groove and the opening of the die changing groove are spliced and closed, the steel ball rollers (35) on the two sides of the die discharging groove are respectively positioned on the extension lines of the steel ball rollers (35) on the two sides of the die changing groove.

35. The tube sizing mill of claim 34 wherein: two hooks (62) are respectively fixed on two sides of the opening end of the die discharging groove, two hook pins (316) are fixed on the die changing mechanism, and when the die discharging groove and the die changing groove are spliced and closed, the two hooks (62) are respectively hooked with one hook pin (316).