CN116493664B

CN116493664B - Metal pipe cutting production line

Info

Publication number: CN116493664B
Application number: CN202310699187.8A
Authority: CN
Inventors: 许小波
Original assignee: Dongguan Nanguan Automation Technology Co ltd
Current assignee: Dongguan Nanguan Automation Technology Co ltd
Priority date: 2023-06-14
Filing date: 2023-06-14
Publication date: 2023-09-26
Anticipated expiration: 2043-06-14
Also published as: CN116493664A

Abstract

The invention discloses a metal pipe cutting production line, which comprises cutting equipment, a flanging mechanism and a feeding mechanism; the feeding mechanism is respectively provided with a first feeding level and a second feeding level which correspond to the flanging mechanism and the cutting equipment, and a transfer assembly is arranged between the first feeding level and the second feeding level; the flanging mechanism is used for carrying out flanging treatment on the end part of the metal pipe; the automatic feeding device can be automatically operated, standardized production is realized, production efficiency is improved, the volume occupied by equipment can be effectively reduced by a feeding mode of dragging the metal pipe through the rotary traction head, efficiency is higher, and the cutting mode of extruding by the inner knife and the outer knife is matched by equidistant movement of the rotary traction head, so that the cutting surface is smooth, scraps are reduced, and the length error of the cut small section of metal pipe is reduced.

Description

Metal pipe cutting production line

Technical Field

The invention belongs to the technical field of cutting equipment, and particularly relates to a metal pipe cutting production line.

Background

The building board supporting pieces can understand two building boards placed in parallel, a plurality of supporting pieces are placed between the two building boards to form an I-shaped structure, most of the supporting pieces are made of solid metal for a long time, the cost is high, then due to improvement of the process, most of the existing supporting pieces are made of metal pipes, the supporting pieces cannot be too long, long metal pipes are used as raw materials for manufacturing the supporting pieces, and then the supporting pieces are cut; although the metal pipe is hollow, the metal pipe is relatively long and has certain quality, the efficiency is low by adopting a manual carrying and cutting mode, and the cut supporting piece has the problems of large length error, uneven cut and the like;

After cutting to form a small section at one end, flanging operation is needed to be carried out at two ends of the small section, the contact area with the building board is increased, the subsequent flanging operation is influenced by uneven length and uneven cut, the flanging operation is mostly carried out in an extrusion mode, the area of flanging is not influenced by the length, the final formed length (height) is not influenced, and the non-parallel structure board is caused when the support pieces with different lengths are used, so that the supporting effect is influenced; in addition, existing cutting methods generate a lot of scraps, and the scraps can enter the interior of the metal tube to influence subsequent further processing.

Disclosure of Invention

The invention aims to provide a metal pipe cutting production line for solving the problems in the background art.

In order to achieve the above purpose, the present invention provides the following technical solutions:

a metal pipe cutting production line comprises cutting equipment, a flanging mechanism and a feeding mechanism;

the feeding mechanism is respectively provided with a flanging mechanism, and a first feeding level and a second feeding level which correspond to the cutting equipment, and a transfer assembly is arranged between the first feeding level and the second feeding level;

the flanging mechanism is used for carrying out flanging treatment on the end part of the metal pipe;

The cutting equipment comprises a frame, a rotating device, a rotary traction head and a liftable rotary external cutting device are sequentially arranged on the frame along a straight line, the rotating device is connected with a long rod, the long rod penetrates through the rotary traction head, an internal cutting knife is arranged at the end part of the long rod, the internal cutting knife is matched with the rotary external cutting device, and a feeding and discharging window is arranged on the external cutting device corresponding to the second feeding position; the rotary traction head is used for grabbing the flanging of the metal pipe and can reciprocate along the extending direction of the long rod.

Further technical scheme, rotatory outer cutters includes the mounting bracket, be equipped with the business turn over material window that corresponds with the inscription sword on the mounting bracket, business turn over material window department is equipped with rotatory outer cutter body, rotatory outer cutter body is connected with lifting unit.

According to a further technical scheme, the first fixing device is further arranged on the mounting frame and used for fixing the metal pipe during feeding; the first fixing device comprises a push-pull assembly, the output end of the push-pull assembly is movably connected with two movable frames, the movable frames are rotatably connected with the mounting frame, clamping heads are further arranged on the movable frames, the two clamping heads can mutually approach to form clamping positions, and the clamping positions correspond to the feeding and discharging windows.

Further technical scheme, rotatory traction head includes drive assembly two, install fixing base one on the drive assembly two, be equipped with the passageway that supplies stock and inscription sword to pass in the fixing base one, be located fixing base one and rotationally install fixed part and clamping part, the fixed part corresponds the tip of passageway, and the fixed part supplies tubular product turn-ups to put into, clamping part can stretch into fixed part and tubular product turn-ups counterbalance, and cooperates the fixed part to fix the turn-ups centre gripping.

According to a further technical scheme, a plurality of supporting components for bearing long rods are further arranged in the rack, each supporting component comprises a fixing frame, a swinging frame is arranged at the upper end of each fixing frame, a roller group I is radially arranged at the upper end of each swinging frame, a roller group II is axially arranged at the upper end of each swinging frame, and the roller group I and the roller group II are simultaneously contacted with a pipe;

the swing frame is characterized in that a first linkage part is rotatably connected to one side of the swing frame, a second linkage part is rotatably connected to one side of the linkage part, the second linkage part is rotatably connected with the output end of a fourth cylinder, and the four ends of the fourth cylinder are movably connected with the fixing frame.

According to a further technical scheme, the flanging mechanism comprises a second fixing seat, and a second fixing device, a pulling device and an expanding device are correspondingly arranged on the second fixing seat; the second fixing device is used for fixing the metal pipe and aligning the metal pipe with the expansion mechanism; the second fixing device can move towards the expansion device through the pulling device, and the expansion device is used for flanging the end part of the metal pipe.

According to a further technical scheme, the expanding device comprises a plurality of movable assemblies capable of resetting, the movable assemblies are arranged in an annular array, a first conical abutting block is arranged on each movable assembly, the side walls of the first conical abutting blocks are abutted against the inner wall of the metal pipe, a second conical abutting block is abutted against the inner sides of the first conical abutting blocks, and the second conical abutting blocks are connected with a fifth cylinder;

still include drive assembly III, drive assembly III is connected with the carousel subassembly through the drive belt, the carousel subassembly has set firmly the third fixed plate, movable assembly sets firmly on the third fixed plate, five outputs of cylinder pass carousel subassembly and third fixed plate.

Further technical scheme, feed mechanism includes at least two sharp distribution, and the loading attachment of synchronous action, loading attachment includes the material loading frame, be equipped with material loading level one and material loading level two on the material loading frame, be located material loading frame up end and be equipped with from material loading level one to material loading level two direction slope two to be located material loading level one and all be equipped with gyro wheel propelling movement subassembly in a plurality of material loading level two, transfer assembly will be located material loading level one's metal tubular product jack-up.

Further technical scheme is equipped with the material rack in the position that is close to material loading position one, shifts metal tubing from material rack to material loading position one through shifting the subassembly, shifting the subassembly and including elevation structure, elevation structure is connected with the roof, the up end of roof is equipped with the slope one to the slope of material rack direction, slope one extends to material rack.

According to a further technical scheme, the second feeding level is provided with a plurality of slopes four between the adjacent second feeding levels, and a transition component covering the opening at the upper end of the second feeding level is arranged on the feeding frame except for the last feeding level.

The invention has the beneficial effects that:

the automatic feeding device can be automatically operated, standardized production is realized, production efficiency is improved, the volume occupied by equipment can be effectively reduced by a feeding mode of dragging the metal pipe through the rotary traction head, efficiency is higher, and the cutting mode of extruding by the inner knife and the outer knife is matched by equidistant movement of the rotary traction head, so that the cutting surface is smooth, scraps are reduced, and the length error of the cut small section of metal pipe is reduced.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

Fig. 1: integral structure diagram I of the present invention.

Fig. 2: the integral structure diagram of the invention II.

Fig. 3: the three-dimensional structure diagram of the rotating device is provided.

Fig. 4: the rotating device of the present invention is a side view.

Fig. 5: the rotary external cutter device of the present invention is a front view.

Fig. 6: the fixing device of the invention is a structure diagram.

Fig. 7: the blanking component structure diagram of the invention.

Fig. 8: the rotary traction head structure of the invention is shown in the figure.

Fig. 9: the invention relates to a three-dimensional structure diagram of a supporting component.

Fig. 10: the support assembly of the present invention is a side view.

Fig. 11: the invention relates to a three-dimensional structure diagram of a flanging mechanism.

Fig. 12: the stent structure of the present invention.

Fig. 13: structure of movable assembly of the present invention.

Fig. 14: the invention relates to a rear side three-dimensional structure diagram of a flanging mechanism.

Fig. 15: the second structure of the fixing device of the invention.

Fig. 16: the metal pipe flanging process is schematically shown in the invention.

Fig. 17: the whole structure diagram of the feeding device is provided.

Fig. 18: the partial structure diagram of the feeding device is provided.

Fig. 19: transfer unit architecture of the present invention.

Fig. 20: roof structure of the invention.

Fig. 21: the sectional view of the feeding device of the invention.

Reference numerals: 1-cutting apparatus, 11-frame, 12-rotating device, 121-first fixed plate, 122-positioning column, 123-rotating sleeve, 124-first drive assembly, 125-second fixed plate, 126-first drive motor, 127-first drive wheel set, 128-first screw pair, 129-reinforcing bar, 13-rotating traction head, 131-second drive assembly, 132-first fixed seat, 133-channel, 134-stationary part, 135-clamping part, 1351-cylinder three, 1352-bearing housing, 1353-shaft housing, 1354-movable bar, 1355-clamping block, 14-rotating outer cutter device, 141-mounting frame, 142-feeding and discharging window, 143-rotating outer cutter body, 144-second drive motor 145-second driving wheel set, 146-second screw pair, 147-movable plate I, 15-long rod, 16-inner cutter, 17-fixing device I, 171-movable frame, 172-chuck, 173-cylinder II, 174-movable block, 175-fixed block I, 176-connecting rod, 177-slide bar, 2-flanging mechanism, 21-fixed seat II, 22-fixing device II, 221-movable plate II, 222-working hole, 223-clamping component I, 224-clamping component II, 2241-clamping seat, 2242-clamping position, 2243-torsion bar, 23-pulling device, 231-cylinder six, 232-connecting frame, 233-pull rod I, 234-pull rod II, 24-expanding device, 241-movable, moving component, 2411-fixed block four, 2412-moving block, 2413-spring one, 242-tapered interference block one, 243-tapered interference block two, 244-cylinder five, 245-drive assembly three, 246-turntable assembly, 247-third fixed plate, 248-fixed block three, 249-cylindrical interference block three, 251-positioning rod, 252-limit nut, 253-spring two, 3-loading device, 31-loading rack, 32-loading level one, 33 a-loading level two A, 33B-loading level two B, 33C-loading level two C, 34-ramp two, 35-roller feeding assembly, 36-transfer assembly, 361-top plate, 362-ramp one, 363-drive member, 364-fixed rod, 365-swing rod 366-fixing elements, 367-protruding parts, 368-slope three, 37-material placing rack, 38-slope four, 39 a-transition assembly A, 39B-transition assembly B, 391-cylinder seven, 392-arc-shaped connecting elements, 393-cover plate, 4-supporting assembly, 41-fixing frame, 42-swinging frame, 421-base, 422-mounting part, 423-connecting rod, 424-connecting block, 425-fixing block two, 43-roller group one, 44-roller group two, 45-linkage part one, 46-linkage part two, 47-cylinder four, 5-blanking assembly, 51-blanking slide plate, 52-slide block, 53-protruding block, 54-cylinder one, 6-supporting part, 61-supporting frame, 62-pulley one, 63-pulley two.

Description of the embodiments

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Please refer to fig. 1-21;

the metal pipe cutting production line aims at realizing automatic operation, standardized production and production efficiency improvement; the metal pipe is a hollow mechanism; the device specifically comprises a cutting device 1, a flanging mechanism 2 and a feeding mechanism; referring to fig. 1 and 2

The feeding mechanism is respectively provided with a first feeding level 32 and a second feeding level corresponding to the flanging mechanism 2 and the cutting equipment 1; during operation, a metal pipe is placed into the first material loading position 32 through the material loading mechanism, then one end of the metal pipe in the first material loading position 32 is inserted into the flanging mechanism 2, flanging operation is carried out on one end of the metal pipe through the flanging mechanism 2, the metal pipe subjected to flanging is pushed out of the flanging mechanism 2, and then the metal pipe positioned in the first material loading position 32 is transferred into the second material loading position through the transfer component 36, so that the metal pipe corresponds to the material inlet and outlet window 142; pushing out the metal pipe at the second feeding position and inserting the metal pipe into the feeding and discharging window 142;

in the embodiment, the cutting device 1 comprises a frame 11, the frame 11 is sequentially provided with a rotating device 12, a rotating traction head 13 and a liftable rotating outer cutter device 14 along a straight line, the rotating device 12 is connected with a long rod 15, the long rod 15 passes through the rotating traction head 13, an inner cutter 16 is arranged at the end part of the long rod 15, the inner cutter 16 is matched with the rotating outer cutter device 14, and a feeding and discharging window 142 is arranged on the outer cutter device corresponding to the second feeding position;

At this time, the rotary drawing head 13 is positioned at the feeding and discharging window 142, the placing direction of the metal pipe from the first feeding position 32 to the second feeding position is not changed, namely one end of the flanging of the metal pipe enters the frame 11 from the feeding and discharging window 142, then the flanging is clamped by the rotary drawing head 13 to drag the metal pipe to enter the frame 11, and meanwhile, the inner cutter 16 and the long rod 15 penetrate into the metal pipe; further, the outer cutter device 14 is rotated to rise when the metal pipe is fed, so that the metal pipe is prevented from being blocked, the outer cutter device 14 is rotated to fall after the metal pipe is fed, and the outer cutter device and the inner cutter 16 are matched and respectively correspond to the inner side and the outer side of the same position of the metal pipe; after each pair of metal pipes is cut into a section, the outer cutter device 14 is rotated to ascend, the traction head 13 is rotated to push out a section of metal pipe, and the outer cutter device 14 is rotated to descend again to be matched with the inner cutter 16.

When cutting is performed, the rotating device 12 drives the long rod 15 and the inner cutter 16 to rotate, and meanwhile, the inner cutter 16 is matched with the outer cutter device 14 to extrude the metal pipe, so that when the inner cutter 16 rotates, the metal pipe can also rotate along with the action of friction force, the metal pipe can be cut in a rotating way, and the outer cutter device 14 can also rotate along with the rotation in the cutting process, so that the rotating resistance of the metal pipe can be reduced; in addition, the turnup of the metal pipe is clamped by the rotary drawing head 13, namely, when the metal pipe rotates, the rotary drawing head 13 also rotates along with the metal pipe, and keeps consistent with the state of the metal pipe, and the rotary drawing head 13 also moves towards the feeding and discharging window 142 at equal intervals, so that the lengths of pipe blanks cut out from each section are approximately the same.

According to the invention, the feeding mode of dragging the metal pipe by the rotary traction head 13 can effectively reduce the volume occupied by equipment, the efficiency is higher, and the equidistant movement of the rotary traction head 13 is matched with the internal and external knife extrusion cutting mode, so that the section is smooth, the scraps are reduced, and the length error of the cut small-section metal pipe can be reduced.

In the following embodiments, of course, the length of the metal pipe is not fixed, and is greater than or less than the length of the frame 11, and the position where the rotary pulling head 13 pulls the metal pipe into the frame 11 is the same, except that the length of each metal pipe is the length of each metal pipe, so that the length of each metal pipe in the frame 11 can be equal by cutting the first knife into leftover materials, and then the pulling head pushes the metal pipe to move towards the feeding and discharging window 142 at equal intervals, so that the automatic cutting is realized, the equidistant cutting can be satisfied, and the influence of the formed support piece length on the subsequent processing and use is avoided.

It is also to be noted that the cutting device 1 may have at least one cutting station of identical construction, the above embodiment being described only in terms of one cutting station.

Referring to fig. 3 and 4, the present invention relates to one embodiment of a rotating device 12, specifically including a first fixing plate 121, wherein one side of the first fixing plate 121 is fixedly provided with a plurality of positioning columns 122, a rotating sleeve 123 is installed on the plurality of positioning columns 122, and the rotating sleeve 123 is connected with a long rod 15, i.e. drives the long rod 15 and an inner cutter 16 to axially move; in addition, a first driving component 124 is installed on the first driving component 123, the first driving component 124 is in transmission connection with the first driving component 123, in this embodiment, the first driving component 123 may be composed of a bearing and a support, the support is connected with the long rod 15, a first gear is disposed on the support, a second gear is installed on the first driving component 124, the first gear is connected with the second gear through a transmission belt, and rotation of the support is achieved, so that the long rod 15 and the inner cutter 16 are driven to rotate.

The axial adjusting assembly is fixedly arranged on the positioning columns 122, the axial adjusting assembly is in transmission connection with the rotating sleeve 123, the rotating sleeve 123 is movably connected with the positioning columns 122, the rotating assembly is driven to reciprocate along the positioning columns 122 through the axial adjusting assembly, namely, the long rod 15 and the inner cutter 16 are driven to axially move, and the position of the inner cutter 16 is adjusted.

In this embodiment, the axial adjustment assembly includes a second fixing plate 125 fixedly connected to the plurality of positioning columns 122, a first driving motor 126 and a first driving wheel set 127 are installed on the second fixing plate 125, the first driving wheel set 127 is connected with a first screw pair 128, and a movable end of the first screw pair 128 is connected with a rotating sleeve 123; the first driving motor 126 drives the first driving wheel set 127 to rotate, so as to drive the first screw pair 128 to act, i.e. drive the rotary sleeve 123 to move back and forth along the positioning rod 251.

Further, a plurality of reinforcing rods 129 are provided between the first and second fixing plates 121 and 125, and the plurality of reinforcing rods 129 are distributed at the upper end and the wall to form a triangle with each other, thereby reinforcing the connection structure between the first and second fixing plates 121 and 125.

Referring to fig. 5-7, the rotary external cutter device 14 includes a mounting frame 141, a feeding and discharging window 142 corresponding to the internal cutter 16 is provided on the mounting frame 141, a rotary external cutter body 143 is provided at the feeding and discharging window 142, the rotary external cutter body 143 is connected with a lifting component, in this embodiment, the rotary external cutter body 143 may be composed of a circular external cutter body and a bearing component; when cutting is carried out, the circumscribed body can rotate under the action of friction force, and the phase change reduces the rotation resistance of the metal pipe, so that the metal pipe can rotate during cutting;

in one embodiment of the lifting assembly according to the present invention, referring to fig. 5, the lifting assembly specifically includes a second driving motor 144 and a second driving wheel set 145 that are in driving connection, where the second driving wheel set 145 is connected with a second screw pair 146, a movable end of the second screw pair 146 is connected with a first movable plate 147, and the first movable plate 147 is connected with the rotary external cutter body 143.

Further, a blanking assembly 5 is arranged at the outer side of the feeding and discharging window 142, referring to fig. 7, one embodiment of the blanking assembly 5 comprises a blanking slide plate 51, the blanking slide plate 51 is rotatably connected with a mounting frame 141, a sliding block 52 is further arranged below the blanking slide plate 51, the lower end of the sliding block 52 is slidably connected with the mounting frame 141, a protruding block 53 is arranged on the upper end face of the sliding block 52, and in addition, the sliding block 52 is further connected with a plurality of first air cylinders 54; when the metal pipe is fed, the blanking slide plate 51 is in a sagging state to form a clearance, so that blocking of the feeding of the metal pipe is avoided, and when the metal pipe is fed, the first cylinder 54 drives the slide block 52 to move towards the blanking slide plate 51, so that the convex block 53 is abutted against the bottom surface of the blanking slide plate 51, the blanking slide plate 51 is jacked up to form inclined sliding, and the cut small-section metal pipe is convenient to cut for blanking.

In addition, the position that is located the business turn over material window 142 still is equipped with sliding connection's supporting part 6, and supporting part 6 includes support frame 61, is equipped with two pulleys one 62 at support frame 61 up end, can assist the tubular metal resonator to rotate, plays the supporting role simultaneously, and the lower terminal surface of support frame 61 is equipped with pulley two 63 in addition, pulley two 63 offsets with the slider 52 terminal surface, and slider 52 up end is equipped with the ripple, under the drive of cylinder one 54, when bellied ripple and pulley two 63 contact on the slider 52, can make supporting part 6 wholly rise, makes the tubular metal resonator form the support.

The mounting frame 141 is also provided with a first fixing device 17. Referring to fig. 5 and 6, the fixing device is used for fixing the metal pipe during feeding, and the fixing device 17 is used for fixing the position of the metal pipe, so that the rotary traction head 13 is convenient to obtain.

Further, the first fixing device 17 includes a push-pull assembly, an output end of the push-pull assembly is movably connected with the two movable frames 171, the movable frames 171 are rotatably connected with the mounting frame 141, the two chucks 172 are respectively provided with a slot adapted to the metal pipe, for example, the metal pipe is a cylinder, that is, the two chucks 172 respectively have an arc slot, and pushing and shrinking of the push-pull assembly can respectively drive the two movable frames 171 to separate from or approach each other, for example, when the push-pull device shrinks, the two movable frames 171 are rotatably connected with the mounting frame 141, so that the two movable frames 171 are mutually close, the two chucks 172 form an opposite state, that is, form a clamping position 2242, and the clamping position 2242 corresponds to the feeding and discharging window 142.

Referring to fig. 6, one embodiment of the push-pull assembly specifically includes two second cylinders 173 and a movable block 174 rotatably connected to the second cylinders 173, in this embodiment, the movable block 174 is in an "L" shape, that is, the second cylinders 173 are connected to the lower portion of the movable block 174 in an "L" shape, the movable block 174 is rotatably connected to the first fixed block 175, for example, the middle portion of the movable block 174 in an "L" shape is rotatably connected to the first fixed block 175, the first fixed block 175 is disposed on the mounting frame 141, the other end of the movable block 174 is rotatably connected to a connecting rod 423176, that is, the upper end of the movable block 174 in an "L" shape is movably connected to the connecting rod 423176, and the other end of the connecting rod 423176 is movably connected to the slide rod 177 of the movable frame 171; the second cylinder 173 in the embodiment is longitudinally arranged, and the pushing out and the shrinking can drive the movable block 174 to rotate;

For example, the second cylinder 173 acts to drive the movable block 174 to rotate, and at the same time, the connecting rod 423176 is pushed out or retracted, and the movable frame 171 is driven to be unfolded or closed by the action of the connecting rod 423176, and as the rotation of the movable block 174 can cause the connecting rod 423176 to generate a certain height change, the movable block 174 is provided with the slide rod 177, one end of the connecting rod 423176 is movably connected with the slide rod 177, and when the height of the connecting rod 423176 changes, the other end of the connecting rod 423176 can slide up and down with the slide rod 177 to adjust the height.

Referring to fig. 8, the invention relates to one embodiment of a rotary traction head 13, specifically comprising a second driving component 131, wherein a first fixing seat 132 is installed on the second driving component 131, a channel 133 for a long rod 15 and an inner cutter 16 to pass through is arranged in the first fixing seat 132, a fixing part 134 and a clamping part 135 are rotatably installed on the first fixing seat 132, the fixing part 134 corresponds to the end part of the channel 133, the fixing part 134 is used for placing a pipe flanging, the clamping part 135 can extend into the fixing part 134 to prop against the pipe flanging, and the flanging is clamped and fixed by matching with the fixing part 134;

during operation, the metal pipe can rotate along with the long rod 15, because the rotary traction head 13 clamps and fixes the metal pipe, so the rotary traction head 13 can also rotate along with the rotary traction head, the scheme adopted is that the fixed part 134 and the clamping assembly rotate, further the fixed part 134 is rotationally connected with the fixed part 132, the clamping part 135 comprises two air cylinders three 1351 fixedly arranged on the fixed part 132, the two air cylinders three 1351 are connected with bearing sleeves 1352, the inner sides of the bearing sleeves 1352 are rotationally connected with shaft sleeves 1353, the shaft sleeves 1353 can rotate relative to the bearing sleeves 1352, the shaft sleeves 1353 and the fixed part 132 can axially slide and radially rotate, for example, the fixed part 132 is a barrel, the corresponding shaft sleeves 1353 are sleeved on the fixed part 132, the shaft sleeves 1353 are rotationally connected with at least one movable rod 1354, the movable rod 1354 is rotationally connected with the clamping block 1355, the clamping block 1355 is rotationally connected with the fixed part 134, the clamping block 1355 can rotationally extend into the fixed part 134, the clamping part 134 is matched with the flange, the bearing sleeves 1352 are pushed by the two air cylinders three 1351, the bearing sleeves 1352 are axially pushed by the bearing sleeves 1352, and the shaft sleeves 1353 axially slide and radially rotate to form the fixed part and the movable rod 1354, and the movable rod 1354 is axially matched with the fixed part and the movable rod 1355, and the movable rod 1354 are axially rotates.

In this embodiment, the number of the movable rods 1354 is four, and the annular arrays are arranged, and the corresponding clamping blocks 1355 should also be four, which can be specifically distributed at intervals of 90 degrees, so that the clamping and fixing of the flanging are more facilitated.

In addition, a notch is formed at the edge of the fixing portion 134, and the clamping block 1355 is placed in the notch, so that the clamping block 1355 can rotate into the fixing portion 134, and the rotation angle is larger.

In the invention, a plurality of support components 4 for bearing long rods 15 are also arranged in the frame 11, and referring to fig. 9 and 10, one embodiment of the support components 4 specifically comprises a fixing frame 41, wherein the fixing frame 41 is in an inverted L shape in the embodiment; the upper end of the fixed frame 41 is provided with a swing frame 42, the upper end of the swing frame 42 is radially provided with a first roller group 43, and the upper end of the swing frame is axially provided with a second roller group 44; a first linkage part 45 is rotationally connected to one side of the swing frame 42, a second linkage part 46 is rotationally connected to the first linkage part 45, the second linkage part 46 is rotationally connected with the output end of a fourth cylinder 47, and the end part of the fourth cylinder 47 is movably connected with the fixing frame 41;

the rotary drawing head 13 needs to draw the metal pipe into the cutting device 1, that is to say, the rotary drawing head 13 needs to pass through the supporting component 4 in the moving process, in order to avoid the supporting component 4 blocking the movement of the rotary drawing head 13, therefore, in the initial state, the air cylinder four 47 is in an extending state, the air cylinder four 47 extends to sequentially drive the linkage part two 46 and the linkage part one 45, and finally the swinging frame 42 rotates to form a clearance state; after the metal pipe is pulled into the cutting equipment 1 by rotating the traction head 13, the fourth cylinder 47 contracts to drive the first linkage part 45 and the second linkage part 46 to act in sequence, and finally the swing frame 42 is straightened, so that the first roller group 43 and the second roller group 44 are completely contacted with the metal pipe;

When cutting is carried out, the rotary traction head 13 drives the metal tube to rotate, at the moment, the first roller group 43 rotates, so that the radial friction force of the metal tube can be reduced, and when the rotary traction head 13 pushes the metal tube to axially move, the second roller group 44 rotates, so that the friction of the axial movement of the metal tube can be reduced.

In this embodiment, the swing frame 42 includes a base 421, a mounting portion 422 is disposed above the base 421, two sides of the mounting portion 422 are rotatably connected with a connecting rod 423176 and a connecting block 424 which are vertically staggered, one ends of the connecting rod 423176 and the connecting block 424 are connected with the side edge of the mounting portion 422, the other ends of the connecting rod 423176 and the connecting block 424 are connected with the base 421, a second fixing block 425 is disposed between the two connecting blocks 424, the second fixing block 425 is rotatably connected with a first linkage portion 45, and it is to be noted that the metal tube is horizontally disposed, so that the pressure applied to the mounting portion 422 by the metal tube is vertically downward, that is, the pressure applied to the mounting portion 422 by the metal tube is vertically downward, the connecting rod 423176 and the connecting block 424 can be completely born, and the stability of the support assembly 4 is improved.

The invention relates to one embodiment of a flanging mechanism 2, referring to fig. 11-16, specifically comprising a second fixing seat 21, wherein a second fixing device 22, a pulling device 23 and an expanding device 24 are correspondingly arranged on the second fixing seat 21, the second fixing device 22 is used for fixing a metal pipe, the metal pipe is aligned with the expanding device 24, the pulling device 23 is connected with the second fixing device 22, the second fixing device 22 can move towards the expanding device 24 through the pulling device 23, and the expanding device 24 is used for flanging the end part of the metal pipe.

Based on the technical scheme, the method has two embodiments:

in the first embodiment, the metal pipe is transported to the second fixing device 22 by the feeding mechanism, then the position of the metal pipe is fixed by the second fixing device 22, then the second fixing device 22 moves towards the second fixing seat 21 by the pulling device 23, meanwhile, the metal pipe moves along with the second fixing seat, and is inserted into the expansion device 24, the action components of the expansion device 24 are inserted into the inner side of the end part of the metal pipe, the action components of the expansion device 24 are far away from each other and are spread out, and are propped against the inner wall of the metal pipe, and a flanging is formed at the end part of the metal pipe along with gradual spreading of the action components.

In the second embodiment, the metal pipe is transported to the second fixing device 22 by the feeding mechanism, and further the metal pipe is inserted into the expansion device 24, meanwhile, the action assembly in the expansion device 24 is also inserted into the inner side of the end of the metal pipe, the end of the metal pipe forms a flanging along with the gradual opening of the action assembly, meanwhile, the second fixing device 22 moves towards the second fixing device 21 by the pulling device 23, and meanwhile, the metal pipe moves along with the fixing device, namely, the metal pipe assembly stretches into the expansion device 24, so that the area of the flanging is increased.

After the flanging is carried out in the two modes, the action assembly of the expansion device 24 is retracted, the pulling device 23 is reset, the fixing device II 22 is pushed away from the fixing seat II 21, so that the metal pipe is separated from the expansion device 24, and the fixing device II 22 loosens the metal pipe, so that the metal pipe can be taken out.

According to the flanging mechanism 2, an original extrusion flanging mode is replaced by an expansion flanging mode, namely, the original axial extrusion processing is changed into radial expansion flanging, one end of the metal pipe can be flanged no matter how long, and the operation is convenient.

Referring to fig. 12 and 13, the invention relates to one embodiment of the expansion device 24, which specifically includes a plurality of movable components 241 capable of resetting, the movable components 241 are annularly arranged in an array, and each movable component 241 is provided with a first tapered block 242, one end of the first tapered block 242 in the embodiment with smaller end area faces the metal pipe, the side wall of the first tapered block 242 abuts against the inner wall of the metal pipe, a second tapered block 243 is abutted against the inner side of the first tapered block 242, the direction of the second tapered block 243 in the embodiment is opposite to the direction of the first tapered block 242, and the second tapered block 243 is connected with a fifth cylinder 244; in the initial state, the first conical abutting blocks 242 are gathered together and are positioned at the periphery of the second conical abutting blocks 243, and at this time, the first conical abutting blocks 242 can abut against the second conical abutting blocks 243 or not abut against the second conical abutting blocks 243; then, according to the above embodiment, the metal pipe is fed and fixed, and at this time, the first tapered abutting blocks 242 and the second tapered abutting blocks 243 extend into the inner side of the metal pipe; the expansion device 24 starts to act, the cylinder five 244 drives the conical pushing block two 243 to retract, at this time, the conical pushing block two 243 moves relatively to and props against the conical pushing block one 242, along with the gradual retraction of the conical pushing block two 243, the conical pushing blocks one 242 gradually expand outwards, at the same time, one side of the conical pushing block one 242 away from the conical pushing block two 243 props against the inner side wall of the metal pipe, along with the gradual outward expansion of the conical pushing block one 242, the contact part of the metal pipe and the conical pushing block one 242 gradually inclines outwards to form a flanging.

After the flanging is completed, the cylinder five 244 pushes the conical abutting block two 243 outwards, and the conical abutting block one 242 retracts and resets under the action of the movable component 241, i.e. a plurality of conical abutting blocks one 242 gather again.

Further, the movable component 241 includes a fourth fixed block 2411 and a sliding pair, the sliding pair is connected with a moving block 2412, a plurality of first springs 2413 are arranged between the moving block 2412 and the fourth fixed block 2411, the moving block 2412 moves away from the fourth fixed block 2411 under the action of the first springs 2413, the first conical abutting blocks 242 are arranged on the moving block 2412, and the plurality of movable components 241 are arranged in a ring array, and in combination with this embodiment, the plurality of moving blocks 2412 gather towards the middle; the sliding pair is matched, so that the movement of the moving block 2412 is smoother, and the limiting effect is achieved;

when the second conical abutting block 243 is retracted under the action of the fifth air cylinder 244, the first conical abutting block 242 is expanded outwards, the first moving block 2412 compresses the first spring 2413, and when the second conical abutting block 243 is extended under the pushing of the fifth air cylinder 244, the moving block 2412 extends along the extending direction of the sliding pair under the action of the first spring 2413, so that the first conical abutting blocks 242 gather again.

The expanding device 24 comprises a driving assembly III 245, the driving assembly III 245 is connected with a turntable assembly 246 through a transmission belt, the turntable assembly 246 is driven by the driving assembly III 245 and a belt to rotate, a third fixed plate 247 is fixedly arranged on the turntable assembly 246, the movable assembly 241 is fixedly arranged on the third fixed plate 247, the output end of a fifth air cylinder 244 passes through the turntable assembly 246 and the third fixed plate 247, and when the turntable assembly 246 rotates, the output end of the fifth air cylinder 244 can relatively move with the turntable assembly 246, namely keep static and do not rotate along with the turntable assembly 246; specifically, the turntable assembly 246 drives the third fixed plate 247 to rotate, the movable assembly 241 and the first conical abutting block 242 also rotate along with the rotation, in this embodiment, the first conical abutting block 242 can be rotationally connected with the movable assembly 241, when flanging is performed, the first conical abutting block 242 can be contacted with each position of the inner edge of the metal pipe in a rotating manner, that is, the stress on the edge position of the metal pipe is more uniform, and deformation of the flanging is avoided.

Further, a fixed block three 248 is arranged between two adjacent movable components 241, a cylindrical abutting block three 249 is arranged on the fixed block three 248, a plurality of cylindrical abutting blocks three 249 are positioned at the rear side of a plurality of conical abutting blocks one 242, namely, the cylindrical abutting blocks three are positioned between two conical abutting blocks one 242, the conical abutting blocks one 242 are contacted with the metal pipe before the cylindrical abutting blocks three contact, the enclosed space of the cylindrical abutting blocks three 249 is larger than the enclosed space of the conical abutting blocks one 242, and the side walls of the cylindrical abutting blocks three 249 are abutted against the flanging of the metal pipe; when the first tapered abutting blocks 242 abut against the inner side wall of the metal pipe and gradually expand, the end of the metal pipe forms a tapered flanging, then the second fixing device 22 is moved to the second fixing device 21 by the pulling device 23, the metal pipe is synchronously driven to gradually extend into the expansion device 24, and finally the tapered flanging abuts against the side wall of the third cylindrical abutting blocks, it is to be noted that the third fixing block 248 is also installed on the third fixing plate 247 to synchronously rotate, so that the outward turning angle of the tapered flanging is larger.

Referring to fig. 15, the fixing device 22 specifically includes a second movable plate 221, a working hole 222 corresponding to the expansion device 24 is provided in the middle of the second movable plate 221, a first resettable clamping component 223 and a second resettable clamping component 224 are symmetrically installed on the upper and lower sides of the second movable plate 221 corresponding to the working hole 222, and the pulling device 23 penetrates through the second movable plate 221 to be connected with two sides of the first clamping component 223 and the second clamping component 224 respectively; in the initial state, the clamping assembly I223 and the clamping assembly II 224 are in an open state, the pulling device 23 has two pulling actions, the first pulling action is that the clamping assembly I223 and the clamping assembly II 224 are close to each other under the action of the pulling device 23 and finally clamp the metal pipe, and at the moment, the clamping position 2242 formed by the clamping assembly I223 and the clamping assembly II 224 is exactly aligned with the working hole 222, namely, the hollow metal hole is aligned with the working hole 222; after the clamping and fixing are finished, the pulling device 23 performs a second action, the whole second fixing device 22 is pulled to approach the expansion device 24, so that an action component of the expansion device 24 is inserted into the metal pipe through the working hole 222, and finally the flanging operation is performed as far as possible;

Of course, the metal pipe can also be inserted out of the working hole 222 before being fixed, and then clamped and fixed by the first clamping component 223 and the second clamping component 224.

The description of the first clamping assembly 223 and the second clamping assembly 224 in the above embodiment is vertically symmetrical, but in practical application, it is not excluded that the two clamping assemblies can be arranged in a bilateral symmetry manner, and the disclosure of the present invention shall be limited.

A reset device is further arranged between the second fixing device 22 and the second fixing base 21, after the flanging operation is completed, the pulling force of the pulling device 23 disappears, at this time, the second fixing device 22 is pushed to be reset away from the second fixing base 21 by the reset device, in this embodiment, the reset mechanism comprises a plurality of positioning rods 251 fixedly arranged on the second fixing base 21, the positioning rods 251 penetrate through the second movable plate 221, limit nuts 252 are fixedly arranged at the end parts of the positioning rods 251, a second spring 253 is sleeved on the positioning rods 251, and two ends of the second spring 253 respectively abut against the second fixing base 21 and the second movable plate 221.

In this embodiment, the first clamping component 223 and the second clamping component 224 have the same structure, and the second clamping component 224 is described below by using the structure of the second clamping component 224, which specifically includes a clamping seat 2241, a semicircular clamping position 2242 is provided on the clamping seat 2241, the other half of the clamping position 2242 is provided on the corresponding clamping component 223, the two sides of the clamping seat 2241 are respectively connected with at least one torsion bar 2243, the other end of the torsion bar 2243 is connected with the second movable plate 221, when the pulling device 23 applies a larger pulling force than the torsion bar 2243 to the first clamping component 223 and the second clamping component 224, the first clamping component 223 and the second clamping component 224 are close to each other to form a clamping and fixing state for the metal pipe, and after the pulling device 23 disappears, the clamping seat 2241 is driven to reset by the torsion bar 2243, i.e. the first clamping component 223 and the second clamping component 224 are far away from each other, and the clamping state is released.

In addition, the first clamping seat 2241 on the first clamping component 223 is provided with a first positioning tooth, and the second clamping seat 2241 on the second clamping component 224 is provided with a second positioning tooth, so that the first positioning tooth and the second positioning tooth are engaged when the first clamping component 223 and the second clamping component 224 form a clamping state.

The invention relates to one embodiment of a pulling device 23, referring to fig. 17-21, specifically comprising two air cylinders six 231, wherein the output ends of the two air cylinders six 231 are respectively provided with a connecting frame 232, a first pull rod 233 and a second pull rod 234 are rotatably connected to the connecting frame 232, the other ends of the first pull rod 233 and the second pull rod 234 respectively pass through movable strip holes on a second movable plate 221 and are rotatably connected with a first clamping component 223 and a second clamping component 224, and the two sides of the first clamping component 223 and the second clamping component 224 are respectively provided with a first pull rod 233 and a second pull rod 234; in the initial state, the first clamping component 223 and the second clamping component 224 are in an open state, at this time, the first pull rod 233 and the second pull rod 234 on the two sides are in a splayed state, when the sixth air cylinder 231 drives the connecting rod 423176 to move backwards, the first pull rod 233 and the second pull rod 234 are pulled backwards respectively, meanwhile, the first pull rod 233 and the second pull rod 234 can be gradually contracted to form a parallel state, at the same time, the first clamping component 223 and the second clamping component 224 are gradually close to each other to form a propped clamping state, the sixth air cylinder 231 pulls the connecting frame 232 to move backwards again, force cannot be removed because the first clamping component 223 and the second clamping component 224 prop against each other, and at this time, the sixth air cylinder 231 can pull the second fixing device 22 to move towards the second fixing seat 21.

The invention relates to one embodiment of a feeding mechanism, which particularly comprises at least two feeding devices 3 which are distributed in a straight line and synchronously act, wherein two supporting points are formed by the two feeding devices 3, so that a metal pipe can be horizontally placed; in this embodiment, the feeding device 3 includes a feeding frame 31, a first feeding level 32 and a second feeding level are disposed on the feeding frame 31, a second slope 34 inclined from the first feeding level 32 to the second feeding level is disposed on the upper end surface of the feeding frame 31, the first feeding level 32 corresponds to the flanging mechanism 2, the second feeding level corresponds to the feeding window 142 in the cutting device 1, roller pushing assemblies 35 are disposed in the first feeding level 32 and the second feeding levels, the roller pushing assemblies 35 in this embodiment have power, for example, two rollers form a support for the metal pipe, and then are connected with a driving member 363 through a linkage shaft to drive the rollers to rotate so as to move the metal pipe;

during operation, the metal pipe on the first loading level 32 is pushed into the flanging mechanism 2 through the roller pushing assembly 35, flanging is carried out, after flanging, the roller pushing assembly 35 reversely rotates to pull the metal pipe out of the flanging mechanism 2, then the metal pipe on the first loading level 32 is jacked up through the transfer assembly 36, the metal pipe rolls along the second slope 34 direction after being separated from the first loading level 32, the metal pipe enters the second loading level, and then the metal pipe is pushed out to the feeding and discharging window 142 through the roller pushing assembly 35 on the second loading level.

Further, a material placing frame 37 is provided near the first material placing frame 32, the metal pipe is transferred from the material placing frame 37 to the first material placing frame 32 by a transferring component 36, the transferring component 36 comprises a lifting structure, the lifting structure is connected with a top plate 361, a slope first 362 inclined towards the material placing frame 31 is provided on the upper end surface of the top plate 361, and the slope first 362 extends to the material placing frame 37.

The top plate 361 is arranged in parallel with the feeding frame 31, the upper end surface of the top plate 361 is provided with a first slope 362 inclining towards the feeding frame 31, and the first slope 362 extends to the material placing frame 37; the top plate 361 is driven to ascend through the lifting structure, the first slope 362 is in contact with the metal pipe, and the metal pipe is prevented (for example, the side wall of the feeding frame 31 is prevented) so that the metal pipe ascends along the obstacle under the driving of the top plate 361, and when the metal pipe ascends to a certain degree, the metal pipe is higher than the obstacle, and at the moment, the metal pipe rolls along the first slope 362, enters the end face of the feeding frame 31 and finally falls into the first feeding frame 32.

Further, the lifting structure comprises a driving component 363, wherein the driving component 363 can be a combination of a driving motor and a speed reducer, the output end of the driving component 363 is connected with a fixed rod 364, the fixed rod 364 is rotationally connected with one end of a swinging rod 365, the other end of the swinging rod 365 is rotationally connected with a fixing piece 366, the fixing piece 366 is fixedly arranged on the side surface of the top plate 361, and the top plate 361 is connected with the feeding frame 31 through a sliding pair.

In the embodiment of the invention, at least one feeding level two is arranged on the feeding frame 31, a slope two 34 which inclines upwards from the feeding level one 32 to the feeding level two is arranged on the upper end surface of the feeding frame 31, a boss 367 is arranged on the top plate 361 corresponding to the feeding level one 32, and a slope three 368 which is in the same direction as the slope two 34 is arranged on the boss 367; in this embodiment, the boss 367 is higher than the first slope 362, so a blocking position for blocking the rolling of the metal pipe is formed between the first slope 362 and the boss 367;

further, when there is a metal tube on the first loading level 32, the raising of the top plate 361 must push the metal tube away from the first loading level 32, and at the same time, the other metal tube on the material rack 37 is lifted up, but due to the blocking position, the other metal tube cannot enter the first loading level 32 when the protrusion 367 pushes the metal tube on the first loading level 32 away, and the other metal tube cannot enter the first loading level 32 when the protrusion 367 is lowered below the first loading level 32.

In the embodiment, the second feeding level is provided with a plurality of slopes of four 38 between the two adjacent feeding levels, and a transition component covering the opening at the upper end of the second feeding level is arranged on the feeding frame 31 except the last feeding level; the upper level two has three, referring to fig. 21, namely upper level two a 33a, upper level two B33B and upper level two C33C, and transition components a 39a and B39B; where load level two a 33a is adjacent to load level one 32, load level two a 33a is preferably fed by transfer assembly 36, when load level two a 33a has metal tubing, transition assembly a 39a covers the upper end opening of load level two a 33a, at which time metal tubing exiting load level one 32 will roll along ramp four 38 into load level two B33B, and similarly, when load level two B33B has metal tubing, transition assembly B39B covers the upper end opening of load level two B33B, at which time metal tubing exiting load level one 32 will roll along ramp four 38, sequentially pass transition assembly a 39a and transition assembly B39B, and eventually fall into load level two C33C, i.e., which load level two has metal tubing therein, which load level two upper end opening is closed by the transition assembly, which load level two has no metal tubing therein, and which load level two upper end opening is opened by the transition assembly.

Regarding one embodiment of the transition assembly, the transition assembly specifically includes a cylinder seven 391, an output end of the cylinder seven 391 rotates to be connected with one end of the arc-shaped connecting piece 392, the other end of the arc-shaped connecting piece 392 is connected with a cover plate 393, the cover plate 393 is rotationally connected with the feeding frame 31, and the cover plate 393 is opened and closed by linkage of the cylinder seven 391 and the arc-shaped connecting piece 392.

In addition, the position of the feeding frame 31, which is close to the last feeding level two, is provided with a shielding part, the inner side of the shielding part is provided with an arc-shaped transition surface connected with the last feeding level two, the metal pipe is prevented from crossing the feeding level two C33C by the shielding part, and meanwhile, the arc-shaped transition surface is arranged to enable the metal pipe to smoothly enter the feeding level two C33C.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

1. A metal pipe cutting production line which is characterized in that: comprises a cutting device (1), a flanging mechanism (2) and a feeding mechanism;

the feeding mechanism is respectively provided with a first feeding level (32) and a second feeding level (32) which correspond to the flanging mechanism (2) and the cutting equipment (1), and a transfer assembly (36) is arranged between the first feeding level (32) and the second feeding level;

the flanging mechanism (2) is used for carrying out flanging treatment on the end part of the metal pipe;

the cutting equipment (1) comprises a frame (11), wherein the frame (11) is sequentially provided with a rotating device (12), a rotating traction head (13) and a liftable rotating external cutting device (14) along a straight line, the rotating device (12) is connected with a long rod (15), the long rod (15) passes through the rotating traction head (13), an internal cutting knife (16) is arranged at the end part of the long rod (15), the internal cutting knife (16) is matched with the rotating external cutting device (14), and a feeding and discharging window (142) is formed in the external cutting device corresponding to the second feeding position; the rotary traction head (13) is used for grabbing metal pipe flanging and can reciprocate along the extending direction of the long rod (15).

2. A metal tubing cutting line according to claim 1, characterized in that: the rotary outer cutter device (14) comprises a mounting frame (141), a feeding and discharging window (142) corresponding to the inner cutter (16) is arranged on the mounting frame (141), a rotary outer cutter body (143) is arranged at the feeding and discharging window (142), and the rotary outer cutter body (143) is connected with a lifting assembly.

3. A metal tubing cutting line according to claim 1, characterized in that: the mounting frame (141) is also provided with a first fixing device (17) for fixing the metal pipe during feeding; the first fixing device (17) comprises a push-pull assembly, the output end of the push-pull assembly is movably connected with two movable frames (171), the movable frames (171) are rotatably connected with the mounting frames (141), clamping heads (172) are further arranged on the movable frames (171), the two clamping heads (172) can be mutually close to form clamping positions, and the clamping positions correspond to the feeding and discharging windows (142).

4. A metal tubing cutting line according to claim 1, characterized in that: the rotary traction head (13) comprises a driving assembly II (131), a fixing seat I (132) is arranged on the driving assembly II (131), a channel (133) for a long rod (15) and an inner cutter (16) to pass through is arranged in the fixing seat I (132), a fixing part (134) and a clamping part (135) are rotatably arranged on the fixing seat I (132), the fixing part (134) corresponds to the end part of the channel (133), the fixing part (134) is used for placing a pipe flanging, the clamping part (135) can extend into the fixing part (134) to prop against the pipe flanging, and the flanging is clamped and fixed by the matching fixing part (134).

5. A metal tubing cutting line according to claim 1, characterized in that: a plurality of support assemblies (4) for bearing the long rods (15) are further arranged in the frame (11), each support assembly (4) comprises a fixed frame (41), a swinging frame (42) is arranged at the upper end part of each fixed frame (41), a roller group I (43) is radially arranged at the upper end part of each swinging frame (42), a roller group II (44) is axially arranged at the upper end part of each swinging frame, and the roller groups I (43) and II (44) are simultaneously contacted with one pipe;

the swing frame is characterized in that a first linkage part (45) is rotationally connected to one side of the swing frame (42), a second linkage part (46) is rotationally connected to the first linkage part (45), the second linkage part (46) is rotationally connected with the output end of a fourth air cylinder (47), and the end of the fourth air cylinder (47) is movably connected with the fixing frame (41).

6. A metal tubing cutting line according to claim 1, characterized in that: the flanging mechanism (2) comprises a second fixed seat (21), and a second fixed device (22), a pulling device (23) and an expansion device (24) are correspondingly arranged on the second fixed seat (21); the second fixing device (22) is used for fixing the metal pipe and aligning the metal pipe with the expansion mechanism; the pulling device (23) is connected with the second fixing device (22), the second fixing device (22) can move towards the expanding device (24) through the pulling device (23), and the expanding device (24) is used for flanging the end part of the metal pipe.

7. The metal pipe cutting production line according to claim 6, wherein: the expansion device (24) comprises a plurality of movable assemblies (241) capable of resetting, the movable assemblies (241) are arranged in an annular array, a first conical abutting block (242) is arranged on each movable assembly (241), the side walls of the first conical abutting blocks (242) are abutted against the inner wall of the metal pipe, a second conical abutting block (243) is abutted against the inner side of the first conical abutting blocks (242), and the second conical abutting blocks (243) are connected with a cylinder five (244);

still include drive assembly three (245), drive assembly three (245) are connected with carousel subassembly (246) through the drive belt, carousel subassembly (246) have set firmly third fixed plate (247), movable subassembly (241) set firmly on third fixed plate (247), five (244) output of cylinder passes carousel subassembly (246) and third fixed plate (247).

8. A metal tubing cutting line according to claim 1, characterized in that: the feeding mechanism comprises at least two feeding devices (3) which are linearly distributed and synchronously act, each feeding device (3) comprises a feeding frame (31), a first feeding level (32) and a second feeding level (32) are arranged on each feeding frame (31), a second slope (34) which inclines upwards from the first feeding level (32) to the second feeding level (32) is arranged on the upper end face of each feeding frame (31), roller pushing assemblies (35) are arranged in the first feeding level (32) and the second feeding levels, and the transfer assemblies (36) jack up metal pipes located in the first feeding level (32).

9. The metal pipe cutting production line according to claim 8, wherein: be close to the position of going up material level one (32) and be equipped with material rack (37), transfer metal tubular product to go up material level one (32) from material rack (37) through transfer subassembly (36), transfer subassembly (36) include elevation structure, elevation structure is connected with roof (361), the up end of roof (361) is equipped with slope one (362) to going up material rack (31) direction slope, slope one (362) extends to material rack (37).

10. The metal pipe cutting production line according to claim 9, wherein: the second feeding level is provided with a plurality of slopes (38) between the adjacent second feeding levels, and a transition component covering the opening at the upper end of the second feeding level is arranged on the feeding frame (31) except the last feeding level.