CN114192623A - Flexible processing and forming production line and method for self-adaptive special-shaped welded pipe - Google Patents
Flexible processing and forming production line and method for self-adaptive special-shaped welded pipe Download PDFInfo
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- CN114192623A CN114192623A CN202111490923.6A CN202111490923A CN114192623A CN 114192623 A CN114192623 A CN 114192623A CN 202111490923 A CN202111490923 A CN 202111490923A CN 114192623 A CN114192623 A CN 114192623A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 131
- 238000013000 roll bending Methods 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 118
- 239000010959 steel Substances 0.000 claims description 118
- 230000006835 compression Effects 0.000 claims description 48
- 238000007906 compression Methods 0.000 claims description 48
- 230000005540 biological transmission Effects 0.000 claims description 30
- 238000007493 shaping process Methods 0.000 claims description 16
- 238000003466 welding Methods 0.000 claims description 16
- 238000005096 rolling process Methods 0.000 claims description 13
- 238000005452 bending Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 238000004513 sizing Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
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- 229910000975 Carbon steel Inorganic materials 0.000 description 2
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- 239000010962 carbon steel Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/14—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers
Abstract
The invention discloses a flexible processing and forming production line and a flexible processing and forming method for a self-adaptive special-shaped welded pipe in the field of welded pipe manufacturing, wherein the device comprises nine groups of forming front roller mechanisms which are sequentially arranged backwards, the forming front roller mechanisms are horizontally arranged, three groups of forming rear roller mechanisms which are sequentially arranged backwards are correspondingly arranged behind a ninth group of forming front roller mechanism, and flexible vertical roller mechanisms are respectively arranged between the first group of forming front roller mechanisms and the second group of forming front roller mechanisms, between the fourth group of forming front roller mechanisms and the fifth group of forming front roller mechanisms, between the fifth group of forming front roller mechanisms and the sixth group of forming rear roller mechanisms, and between the ninth group of forming front roller mechanisms and the first group of forming rear roller mechanisms; the production method can ensure that the rectangular welded pipe is processed and formed smoothly step by step through twelve roll bending steps, the forming process is more stable, and the processing precision is higher.
Description
Technical Field
The invention belongs to the field of welded pipe manufacturing, and particularly relates to a flexible processing and forming production line and a flexible processing and forming method for a self-adaptive special-shaped welded pipe.
Background
Among the prior art, there is a CTA welded pipe forming unit, its patent application no: 201320861909.7, respectively; application date: 2013-12-25; publication No.: 203678902U; the publication date is as follows: 2014-07-02; a rough roller, an edge bending roller, an independent vertical roller mechanism and a finishing roller are sequentially arranged on the lower table top of the unit; the strip steel passes through a rough roll, an edge bending roll and an independent vertical roll mechanism in sequence, and finally comes out of a finishing roll and is molded; the independent vertical roll mechanism is formed by continuously arranging five groups of independent vertical rolls, namely a primary independent vertical roll, a secondary independent vertical roll, a tertiary independent vertical roll, a four-pass independent vertical roll and a five-pass independent vertical roll; and a group of linked vertical rolls are arranged between the four-pass single vertical roll and the five-pass single vertical roll. The unit can process welded pipes with thick walls and large calibers, but has the following defects: the unit processes and shapes the welded pipe through the roller with fewer passes, and the strip steel is shaped through the roller with fewer passes, so that the strain of each pass is larger, the deformation of the strip steel is not uniform enough, the forming defect is easy to occur, the rejection rate is increased, and the cost is wasted.
Disclosure of Invention
One of the purposes of the invention is to provide a flexible processing and forming production line of a self-adaptive special-shaped welded pipe, which can be provided with nine-set front rolling mechanism and three-set forming rear rolling mechanism, and roll bending processing and forming are sequentially carried out on strip steel by using twelve forming flat rolls, so that the processed and manufactured welded pipe has high strength and high forming precision.
The purpose of the invention is realized as follows: the utility model provides a flexible machine-shaping production line of self-adaptation abnormal shape welded tube, includes that the clamp that sets gradually from the front to back send loading attachment, forming device, welding closing device, water cooling plant, sizing device and coalignment, forming device includes that nine groups of roll mechanisms before the shaping of backward arrangement in proper order, roll mechanism level setting before the shaping, roll mechanism rear correspondence is provided with three groups of roll mechanisms after the shaping of backward arrangement in proper order before the ninth group, between first group and the second group shaping roll mechanism, between fourth group and the fifth group shaping roll mechanism, all be provided with a flexible edger roll mechanism between fifth group and the sixth group of group's preceding roll mechanism, between ninth group and the seventh group's shaping roll mechanism, be provided with a lift bearing roller between the sixth group and the seventh group's preceding roll mechanism.
When the device works, a clamping feeding device sends strip steel into a forming device, the forming device is the key of flexible forming of a welded pipe, a roll mechanism before forming and a roll mechanism after forming both adopt flexible forming adjustment schemes, die rolls of the roll mechanism before forming and the roll mechanism after forming can be adaptively adjusted according to rectangular welded pipes with different specifications to be processed, a welding sealing device extrudes the left side and the right side of the strip steel formed by multi-pass roll bending, so that the strip steel is encircled into a rectangular pipe and a seam is welded, a water cooling device cools the welded rectangular welded pipe, a sizing device adjusts and determines the size of the rectangular welded pipe, and a straightening device straightens the rectangular welded pipe. Compared with the prior art, the invention has the beneficial effects that: the strip steel used for processing and manufacturing the welding pipe is made of carbon steel Q235 or Q345, the wall thickness of the strip steel is 3-10mm, and square welding pipes with the diameters of 100 multiplied by 100 plus 200 multiplied by 200mm and square welding pipes with the diameters of 100 multiplied by 120 plus 150 multiplied by 200mm can be processed; the strip steel is gradually rolled and formed into the welded pipe by adopting twelve passes, the forming hole pattern and the passes are optimized, and the requirements of forming rectangular pipes with different specifications can be met simultaneously; the lifting carrier roller is a lifting horizontal roller, and plays a role in guiding and lifting the movement of the strip steel; and optimally designing a complete set of forming die rollers, designing a servo flexible forming rack, acquiring control coordinates of each roller position, and realizing cold bending flexible forming of the rectangular welded pipe.
As a further improvement of the invention, the pre-forming rolling mechanism comprises two left and right corresponding machine frames I, an upper roll shaft and a lower roll shaft are respectively arranged between the two machine frames I, two upper compression rollers capable of axially moving are arranged on the upper roll shaft, two lower compression rollers capable of axially moving are arranged on the lower roll shaft, the two upper compression rollers are correspondingly arranged left and right, the two lower compression rollers are correspondingly arranged left and right, a gap for strip steel to pass through is arranged between each upper compression roller and each lower compression roller, cylindrical surfaces and variable diameter surfaces are respectively arranged on the peripheries of the upper compression roller and each lower compression roller, the upper roll shaft is in transmission connection with a gearbox through a universal transmission shaft, and the input end of the gearbox is in transmission connection with a driving motor. The upper compression roller and the lower compression roller are respectively connected onto corresponding roller shafts in a sliding manner, a plurality of horizontal screws which are respectively in transmission connection with the corresponding compression rollers are arranged on the first rack, the end part of the upper roller shaft is rotatably supported on the lifting seat, the lifting seat is movably connected onto the first rack along the vertical direction, a lifting screw which drives the lifting seat to move up and down is arranged on the first rack, the horizontal screws and the lifting screw are both in transmission connection with a servo motor, the upper compression roller and the lower compression roller can be adjusted left and right, the upper compression roller can be adjusted up and down, and the requirements of forming and adjusting pipes with different wall thicknesses and different specifications can be met; in order to meet the requirement of full-automatic accurate adjustment, a servo motor is adopted for the adjustment drive of each compression roller; the upper compression roller is a power roller and provides power for driving the strip steel to move, the middle part of the strip steel is supported on the cylindrical surfaces of the two lower compression rollers, the left side and the right side of the strip steel are arranged corresponding to the variable diameter surfaces of the two lower compression rollers, the diameters of the variable diameter surfaces are arranged in an increasing or decreasing mode along the axial direction, and the two upper compression rollers respectively perform roll bending on the two lower compression rollers correspondingly.
As a further improvement of the invention, the forming back-rolling mechanism comprises a second frame, two horizontal roll shafts which correspond up and down and two vertical roll shafts which correspond left and right are arranged on the second frame, the lower roll shaft I is in transmission connection with a gearbox through a universal transmission shaft, the input end of the gearbox is in transmission connection with a driving motor, an upper closed flat roll and a lower closed flat roll are respectively arranged on the two roll shafts I, a closed side roll is respectively arranged on the two roll shafts II, a groove with a V-shaped cross section is formed around the periphery of the middle part of the upper closed flat roll, the upper closed flat roll and the lower closed flat roll are respectively positioned on the upper side and the lower side of the strip steel, the closed side roll is in a circular truncated cone shape, and the two closed side rolls are respectively positioned on the left side and the right side of the strip steel. The roller seat of the upper closed flat roller is in transmission connection with a vertical elevator, the roller seat of the closed side roller is movably connected to a second frame, a side push screw rod for driving the closed side roller to move left and right is arranged on the second frame, the lower closed flat roller provides power for the movement of the strip steel, and the elevator and the side push screw rod are in transmission connection with a servo motor, so that the upper closed flat roller, the lower closed flat roller and the closed side roller are ensured to be more accurate in position adjustment; the lower side of the strip steel is supported on a lower closed flat roll, and the two closed side rolls are used for roll bending and shaping the left side and the right side of the strip steel.
As a further improvement of the invention, the flexible vertical roll mechanism comprises a third rack, two moving seats capable of moving in opposite directions at the same time are arranged on the third rack, and a forming vertical roll capable of moving up and down is arranged on the moving seats. In order to ensure the forming precision and reduce the influence of resilience on the forming precision, flexible vertical roll frames are arranged at the positions corresponding to the roll mechanism before forming and the roll mechanism after forming for resilience correction; the two vertical forming rollers are used for forming the left side and the right side of the strip steel, the vertical forming rollers are installed on the movable seat through vertical roller shafts, and the vertical forming rollers are arranged corresponding to the side surfaces of the strip steel which is subjected to roll bending in corresponding passes.
The invention also aims to provide a production method of the flexible processing and forming production line of the self-adaptive special-shaped welded pipe, which can ensure that the rectangular welded pipe is processed and formed smoothly step by step through twelve roll bending forming roll bending steps, the forming process is more stable, and the processing precision is higher.
A production method of a flexible processing and forming production line of a self-adaptive special-shaped welded pipe comprises the following steps:
(1) the clamping and feeding device feeds the strip steel to a first group of pre-forming roller mechanisms;
(2) the upper compression rollers of the front forming roller mechanisms drive the strip steel to move backwards, and the two upper compression rollers and the lower compression roller of the first group of front forming roller mechanisms bend the strip steel to form first inclined sections at the left side and the right side which are inclined upwards by 24-26 degrees;
(3) two upper press rolls and a lower press roll of the second group of pre-forming roll mechanisms bend the strip steel into a shape that a left first inclined section and a right first inclined section are inclined upwards by 49.2-50.8 degrees;
(4) the strip steel is bent by two upper compression rollers and two lower compression rollers of the third group of pre-forming roller mechanisms to form a left first inclined section and a right first inclined section which are inclined upwards by 71.5-72.5 degrees;
(5) two upper compression rollers and two lower compression rollers of the fourth group of pre-forming roller mechanisms enable two bilaterally symmetrical second inclined sections in the middle of the strip steel roll bending to be upwards inclined by 12-14 degrees;
(6) two upper compression rollers and two lower compression rollers of the fifth group of forming front roller mechanisms enable two second inclined sections, which are formed by bending the strip steel roll and are arranged in the middle, to be inclined upwards by 25-27 degrees;
(7) two upper press rolls and a lower press roll of the sixth combined front roll mechanism enable two second inclined sections, which are formed by bending the strip steel roll and are arranged in the middle, to be inclined upwards by 38-40 degrees;
(8) two upper press rolls and a lower press roll of the seventh constitutive front roll mechanism enable two second inclined sections, which are formed in the middle of the strip steel roll bending, to be inclined upwards by 51-53 degrees;
(9) two upper press rolls and a lower press roll of the eighth combined front roll mechanism enable two second inclined sections, which are formed by bending the strip steel roll and are arranged in the middle, to be inclined upwards by 60.3-61.7 degrees;
(10) two upper press rolls and a lower press roll of the ninth combined front roll mechanism enable two second inclined sections, which are formed by bending the strip steel roll and are arranged in the middle, to be inclined upwards by 71.5-72.5 degrees;
(11) the strip steel moves to a first set of forming rear roll mechanism, an upper closed flat roll, a lower closed flat roll and two closed side rolls of the first set of forming rear roll mechanism bend the strip steel into two second inclined sections which are inclined upwards by 74.6-75.4 degrees, and the lower closed flat roll of the forming rear roll mechanism drives the strip steel to move backwards continuously;
(12) the upper closed flat roll, the lower closed flat roll and the two closed side rolls of the second set of forming rear roll mechanism bend the strip steel into two second inclined sections which are upwards inclined for 79.6-80.4 degrees;
(13) the upper closed flat roll, the lower closed flat roll and the two closed side rolls of the third group of forming rear roll mechanisms bend the strip steel into two second inclined sections which are inclined upwards by 84.8-85.2 degrees.
As a further improvement of the welding sealing device, the welding sealing device extrudes the left side and the right side of strip steel with a second inclined section inclined upwards by 84.8-85.2 degrees, so that the strip steel surrounds into a rectangular pipe and welds a seam, the water cooling device cools the welded rectangular pipe, the sizing device adjusts and determines the size of the rectangular pipe, and the straightening device straightens the rectangular pipe.
As a further improvement of the invention, the active feeding flat roll of the clamping and feeding device comprises two feeding flat rolls which correspond up and down, the roll shaft of any one feeding flat roll is in transmission connection with a driving motor through a speed reducer, the feeding flat roll sequentially feeds strip steel onto a guide roll I, a press roll and a guide roll II, then the strip steel enters a first group of pre-forming roll mechanisms, the guide roll I and the guide roll II have the same structure, the guide roll I is a guide flat roll or two guide vertical rolls which correspond left and right, and the press roll comprises a plurality of up-down corresponding flat press rolls. The feeding flat rollers provide power for moving the strip steel, the strip steel is positioned by the vertically corresponding flat pressing rollers, and the movement of the strip steel is guided by the first guide roller and the second guide roller.
As a further improvement of the invention, in the step (2), the first inclined sections are inclined upwards by 25 °; in the step (3), the first inclined sections are inclined upwards by 50 degrees; the first inclined sections are inclined upwards by 72 degrees; the second inclined section is inclined upwards by 13 degrees in the step (5); in the step (6), the second inclined section is inclined upwards by 26 degrees; the second inclined section is inclined upwards by 39 degrees in the step (7); in the step (8), the second inclined section is inclined upwards for 52 degrees; in the step (9), the second inclined sections are all inclined upwards for 61 degrees, in the step (10), the second inclined sections are all inclined upwards for 72 degrees, in the step (11), the second inclined sections are all inclined upwards for 75 degrees, in the step (12), the second inclined sections are all inclined upwards for 80 degrees, and in the step (13), the second inclined sections are all inclined upwards for 85 degrees.
Compared with the prior art, the invention has the beneficial effects that: the method ensures that the strip steel is processed step by step to smoothly form the rectangular welded pipe through the roll bending step of twelve roll bending forming steps, the forming process is more stable, and the processing precision is higher.
Drawings
Fig. 1 is a front view of the present invention.
FIG. 2 is an enlarged view of the pinch feeder of the present invention.
Fig. 3 is a top view of the present invention.
FIG. 4 is a shape change diagram of the strip steel after the first nine passes of roll bending in sequence.
FIG. 5 is a shape change diagram of the strip steel after passing through the three-pass roll bending forming in sequence.
Fig. 6 is a schematic structural view of a roll mechanism before forming.
Fig. 7 is a schematic structural diagram of the flexible vertical roll mechanism.
Fig. 8 is a schematic structural view of the roll mechanism after forming.
The automatic forming machine comprises a clamping and feeding device 1, a feeding flat roll 1a, a guide roll I1 b, a press roll 1c, a guide roll II 1d, a roll mechanism before forming 2, a roll mechanism after forming 3, a flexible vertical roll mechanism 4, a lifting carrier roller 5, a first frame 6, an upper roll shaft 7, a lower roll shaft 8, an upper roll shaft 9, a lower roll shaft 10, a cylindrical surface 11, a diameter-variable surface 12, a universal transmission shaft 13, a gearbox 14, a driving motor 15, a second frame 16, a first roll shaft 17, a second roll shaft 18, a closed flat roll 19, a groove 19a, a closed flat roll 20, a closed side roll 21, a third frame 22, a movable seat 23, a vertical roll shaft 24, a guide flat roll 25 and a guide vertical roll 26.
Detailed Description
Example 1
As shown in fig. 1-8, the flexible processing and forming production line for the adaptive special-shaped welded pipe of the present embodiment includes a clamping and feeding device 1, a forming device, a welding and sealing device, a water cooling device, a sizing device and a straightening device, which are sequentially arranged from front to back, the forming device comprises nine groups of forming front roller mechanisms 2 which are sequentially arranged backwards, the forming front roller mechanisms 2 are horizontally arranged, three groups of forming rear roller mechanisms 3 which are sequentially arranged backwards are correspondingly arranged behind the ninth group of forming front roller mechanisms 2, flexible vertical roller mechanisms 4 are arranged between the first group of forming front roller mechanisms 2 and the second group of forming front roller mechanisms 2, between the fourth group of forming front roller mechanisms 2 and the fifth group of forming front roller mechanisms 2, between the fifth group of forming front roller mechanisms 2 and the sixth group of forming front roller mechanisms 2, between the ninth group of forming front roller mechanisms 2 and the first group of forming rear roller mechanisms 3, and lifting carrier rollers 5 are arranged between the sixth group of forming front roller mechanisms 2 and the seventh group of forming front roller mechanisms 2.
In order to adapt to the requirements of forming and adjusting pipes with different wall thicknesses and different specifications, the rolling mechanism 2 comprises two first racks 6 which correspond to each other left and right, an upper roll shaft 7 and a lower roll shaft 8 are arranged between the two first racks 6 respectively, two upper press rolls 9 capable of axially moving are arranged on the upper roll shaft 7, two lower press rolls 10 capable of axially moving are arranged on the lower roll shaft 8, the two upper press rolls 9 are correspondingly arranged left and right, two lower press rolls 10 are correspondingly arranged left and right, a gap for strip steel to pass through is formed between each upper press roll 9 and each lower press roll 10, the peripheries of the upper press roll 9 and each lower press roll 10 are respectively provided with a cylindrical surface 11 and a variable diameter surface 12, the upper roll shaft 7 is in transmission connection with a gearbox 14 through a universal transmission shaft 13, and the input end of the gearbox 14 is in transmission connection with a driving motor 15. The upper compression roller 9 and the lower compression roller 10 are respectively connected onto corresponding roller shafts in a sliding manner, a plurality of horizontal screws which are respectively in transmission connection with the corresponding compression rollers are arranged on the first rack 6, the end part of the upper roller shaft 7 is rotatably supported on a lifting seat, the lifting seat is movably connected onto the first rack 6 along the vertical direction, a lifting screw which drives the lifting seat to move up and down is arranged on the first rack 6, the horizontal screws and the lifting screw are in transmission connection with a servo motor, the upper compression roller 9 and the lower compression roller 10 can be adjusted left and right, the upper compression roller 9 can be adjusted up and down, and the requirements of forming and adjusting pipes with different wall thicknesses and different specifications can be met; in order to meet the requirement of full-automatic accurate adjustment, a servo motor is adopted for the adjustment drive of each compression roller; the upper press rolls 9 are power rolls and provide power for driving the strip steel to move, the middle part of the strip steel is supported on cylindrical surfaces 11 of the two lower press rolls 10, the left side and the right side of the strip steel are arranged corresponding to the variable diameter surfaces 12 of the two lower press rolls 10, the diameters of the variable diameter surfaces 12 are arranged in an increasing or decreasing mode along the axial direction, and the two upper press rolls 9 respectively perform roll bending on the two lower press rolls 10 correspondingly.
In order to bend the strip steel into an approximately rectangular shape and reduce the gap of the opening of the strip steel, the formed rolling mechanism 3 comprises a second rack 16, two horizontal roll shafts 17 which correspond up and down and two vertical roll shafts 18 which correspond left and right are arranged on the second rack 16, the lower roll shaft 17 is in transmission connection with a gearbox 14 through a universal transmission shaft 13, the input end of the gearbox 14 is in transmission connection with a driving motor 15, an upper closed flat roll 19 and a lower closed flat roll 20 are respectively arranged on the two roll shafts 17, a closed side roll 21 is respectively arranged on the two roll shafts 18, a groove 19a with a V-shaped cross section is formed in the middle of the upper closed flat roll 19 in a surrounding mode, the upper closed flat roll 19 and the lower closed flat roll 20 are respectively located on the upper side and the lower side of the strip steel, the closed side roll 21 is in a circular truncated cone shape, and the two closed side rolls 21 are respectively located on the left side and the right side of the strip steel. The roller seat of the upper closed flat roller 19 is in transmission connection with a vertical elevator, the roller seat of the closed side roller 21 is movably connected to a second rack 16, a side push screw rod for driving the closed side roller 21 to move left and right is arranged on the second rack 16, the lower closed flat roller 20 provides power for the movement of the strip steel, and the elevator and the side push screw rod are in transmission connection with a servo motor, so that the positions of the upper closed flat roller 19, the lower closed flat roller 20 and the closed side roller 21 are ensured to be more accurately adjusted in movement; the lower side of the strip steel is supported on a lower closed flat roll 20, and two closed side rolls 21 are used for roll bending and shaping the left side and the right side of the strip steel.
In order to perform springback correction on the rolled strip steel, the flexible vertical roll mechanism 4 comprises a third frame 22, two moving seats 23 capable of moving oppositely and oppositely at the same time are arranged on the third frame 22, and a forming vertical roll capable of moving up and down is arranged on the moving seat 23. The two moving seats 23 are respectively connected with a screw rod through a nut sleeve, the screw rod is provided with a positive thread and a negative thread which are respectively connected with the two nut sleeves, and in order to ensure the forming precision and reduce the influence of resilience on the forming precision, the positions corresponding to the roller mechanism 2 before forming and the roller mechanism 3 after forming are provided with flexible vertical roller frames for resilience correction; the two vertical forming rollers are used for forming the left side and the right side of the strip steel, the vertical forming rollers are arranged on the movable seat 23 through vertical roller shafts 24, and the vertical forming rollers are arranged corresponding to the side surfaces of the strip steel which is subjected to roll bending in corresponding passes.
When the production line works, the strip steel is sent into the forming device by the clamping and conveying feeding device 1, the forming device is the key of flexible forming of a welded pipe, the rolling mechanism 2 before forming and the rolling mechanism 3 after forming both adopt flexible forming adjustment schemes, according to different specifications to be processed, the rectangular welded pipe can adapt and adjust the die rolls of the rolling mechanism 2 before forming and the rolling mechanism 3 after forming, the welding and sealing device extrudes the left side and the right side of the strip steel after multi-pass roll bending forming, so that the strip steel is encircled into a rectangular pipe and a seam is welded, the water cooling device cools the rectangular welded pipe after welding, the sizing device adjusts and determines the size of the rectangular welded pipe, and the straightening device straightens the rectangular welded pipe. This production line's advantage lies in: the strip steel used for processing and manufacturing the welding pipe is made of carbon steel Q235 or Q345, the wall thickness of the strip steel is 3-10mm, and square welding pipes with the diameters of 100 multiplied by 100 plus 200 multiplied by 200mm and square welding pipes with the diameters of 100 multiplied by 120 plus 150 multiplied by 200mm can be processed; the strip steel is gradually rolled and formed into the welded pipe by adopting twelve passes, the forming hole pattern and the passes are optimized, and the requirements of forming rectangular pipes with different specifications can be met simultaneously; the lifting carrier roller 5 is a lifting horizontal roller, and plays a role in guiding and lifting the movement of the strip steel.
Example 2
The production method of the flexible processing and forming production line for the self-adaptive special-shaped welded pipe comprises the following steps of:
(1) the clamping feeding device 1 feeds the strip steel to a first group of pre-forming roller mechanisms 2; the active feeding flat roller 1a of the clamping feeding device 1 comprises two feeding flat rollers 1a which correspond up and down, a roller shaft of any one feeding flat roller 1a is in transmission connection with a driving motor through a speed reducer, strip steel is sequentially fed onto a first guide roller 1b, a first compression roller 1c and a second guide roller 1d by the feeding flat roller 1a, then the strip steel enters a first group of forming front rolling mechanism 2, the first guide roller 1b and the second guide roller 1d are identical in structure, the first guide roller 1b is a guide flat roller or two left and right corresponding guide vertical rollers, and the compression roller 1c comprises a plurality of up and down corresponding flat compression rollers. The feeding flat roller 1a provides power for moving the strip steel, the strip steel is positioned by the upper and lower corresponding flat pressing rollers, and the first guide roller 1b and the second guide roller 1d guide the movement of the strip steel;
(2) the upper press rolls 9 of the front forming roll mechanisms 2 drive the strip steel to move backwards, and the two upper press rolls 9 and the lower press rolls 10 of the first group of front forming roll mechanisms 2 bend the strip steel into first inclined sections at the left side and the right side which are inclined upwards by 24-26 degrees;
(3) the two upper press rolls 9 and the lower press roll 10 of the second group of pre-forming roll mechanisms 2 bend the strip steel roll to form a left first inclined section and a right first inclined section which are inclined upwards by 49.2-50.8 degrees;
(4) the two upper press rolls 9 and the lower press roll 10 of the third group of pre-forming roll mechanisms 2 bend the strip steel roll to form a left first inclined section and a right first inclined section which are both inclined upwards by 71.5-72.5 degrees;
(5) two upper press rolls 9 and lower press rolls 10 of the fourth group of pre-forming roll mechanisms 2 enable two bilaterally symmetrical second inclined sections in the middle of the strip steel roll bending to be upwards inclined by 12-14 degrees;
(6) two upper press rolls 9 and two lower press rolls 10 of the fifth group of front forming roll mechanisms 2 tilt two second tilting sections of the middle bent strip steel upwards by 25-27 degrees;
(7) two upper press rolls 9 and two lower press rolls 10 of the sixth combined front roll mechanism 2 tilt two second tilting sections of the middle bent strip steel upwards by 38-40 degrees;
(8) two upper press rolls 9 and two lower press rolls 10 of the seventh constitutive front roll mechanism 2 tilt two second tilting sections of the middle bent strip steel upwards by 51-53 degrees;
(9) two upper press rolls 9 and two lower press rolls 10 of the eighth combined front roll mechanism 2 tilt two second tilting sections of the middle bent strip steel upwards by 60.3-61.7 degrees;
(10) two upper press rolls 9 and two lower press rolls 10 of the ninth combined front roll mechanism 2 tilt two second tilting sections of the middle bent strip steel upwards by 71.5-72.5 degrees;
(11) the strip steel moves to the first set of forming rear roll mechanism 3, the upper closed flat roll 19, the lower closed flat roll 20 and the two closed side rolls 21 of the first set of forming rear roll mechanism 3 bend the strip steel into two second inclined sections which are upwards inclined by 74.6-75.4 degrees, and the lower closed flat roll 20 of the forming rear roll mechanism 3 drives the strip steel to continuously move backwards;
(12) the upper closed flat roll 19, the lower closed flat roll 20 and the two closed side rolls 21 of the second set of forming rear roll mechanism 3 bend the strip steel into two second inclined sections which are inclined upwards by 79.6-80.4 degrees;
(13) the upper closed flat roll 19, the lower closed flat roll 20 and the two closed side rolls 21 of the third group of forming rear roll mechanism 3 bend the strip steel into two second inclined sections which are inclined upwards by 84.8-85.2 degrees.
The first inclined sections in the step (2) are all inclined upwards by 25 degrees; in the step (3), the first inclined sections are inclined upwards by 50 degrees; the first inclined sections are inclined upwards by 72 degrees; the second inclined section is inclined upwards by 13 degrees in the step (5); in the step (6), the second inclined section is inclined upwards by 26 degrees; the second inclined section is inclined upwards by 39 degrees in the step (7); in the step (8), the second inclined section is inclined upwards for 52 degrees; in the step (9), the second inclined sections are all inclined upwards for 61 degrees, in the step (10), the second inclined sections are all inclined upwards for 72 degrees, in the step (11), the second inclined sections are all inclined upwards for 75 degrees, in the step (12), the second inclined sections are all inclined upwards for 80 degrees, and in the step (13), the second inclined sections are all inclined upwards for 85 degrees.
The guide flat rolls 25 and the guide vertical rolls 26 guide the strip steel, so that the strip steel enters a welding and sealing device, the welding and sealing device extrudes the left side and the right side of the strip steel with a second inclined section inclined upwards by 84.8-85.2, the strip steel is made to surround a rectangular pipe and weld a seam, a water cooling device cools the welded rectangular pipe, a sizing device adjusts and determines the size of the rectangular pipe, and a straightening device straightens the rectangular pipe.
The method ensures that the strip steel is processed step by step to smoothly form the rectangular welded pipe through the roll bending step of twelve roll bending forming steps, the forming process is more stable, and the processing precision is higher.
Claims (8)
1. The utility model provides a flexible machine-shaping production line of self-adaptation abnormal shape welded tube, includes that the clamp that sets gradually from front to back send loading attachment, forming device, a serial communication port, forming device includes that nine groups of roll mechanisms before the shaping of backward arrangement in proper order, roll mechanism level sets up before the shaping, roll mechanism rear correspondence is provided with three groups of after-shaping roll mechanisms of backward arrangement in proper order before the ninth group, between the roll mechanism before the shaping of first group and second group, between the roll mechanism before the shaping of fourth group and fifth group, between the roll mechanism before the fifth group and the sixth group, all be provided with a flexible edger roll mechanism between the roll mechanism before the ninth group and the first group shaping, be provided with a lift bearing roller between the roll mechanism before the sixth group and the seventh group.
2. The production line of claim 1, wherein the pre-forming roll mechanism comprises two first racks, an upper roll shaft and a lower roll shaft are arranged between the two first racks, the upper roll shaft is provided with two upper press rolls capable of moving axially, the lower roll shaft is provided with two lower press rolls capable of moving axially, the two upper press rolls are arranged correspondingly left and right, the two lower press rolls are arranged correspondingly left and right, a gap for passing the strip steel is arranged between each upper press roll and each lower press roll, the peripheries of the upper press roll and each lower press roll are respectively provided with a cylindrical surface and a variable diameter surface, the upper roll shaft is in transmission connection with a gearbox through a universal transmission shaft, and the gearbox is in transmission connection with a driving motor.
3. The flexible processing and forming production line of the self-adaptive special-shaped welded pipe according to claim 1 or 2, characterized in that the forming back rolling mechanism comprises a second frame, the second frame is provided with two horizontal roll shafts which correspond up and down and two vertical roll shafts which correspond left and right, the first roll shaft below is in transmission connection with a gearbox through a universal transmission shaft, the gearbox is in transmission connection with a driving motor, the first roll shaft is respectively provided with an upper closed flat roll and a lower closed flat roll, the second roll shaft is respectively provided with a closed side roll, the periphery of the middle part of the upper closed flat roll is provided with a groove with a V-shaped cross section in a surrounding manner, the upper closed flat roll and the lower closed flat roll are respectively positioned on the upper side and the lower side of the strip steel, the closed side rolls are in a round platform shape, and the two closed side rolls are respectively positioned on the left side and the right side of the strip steel.
4. The flexible processing and forming production line of the self-adaptive special-shaped welded pipe according to claim 1 or 2, characterized in that the flexible vertical roll mechanism comprises a third machine frame, two movable seats capable of moving oppositely and oppositely at the same time are arranged on the third machine frame, and a forming vertical roll capable of moving up and down is arranged on each movable seat.
5. The production method of the flexible processing and forming production line of the adaptive special-shaped welded pipe according to any one of claims 1 to 4, characterized by comprising the following steps of:
(1) the clamping and feeding device feeds the strip steel to a first group of pre-forming roller mechanisms;
(2) the upper compression rollers of the front forming roller mechanisms drive the strip steel to move backwards, and the two upper compression rollers and the lower compression roller of the first group of front forming roller mechanisms bend the strip steel to form first inclined sections at the left side and the right side which are inclined upwards by 24-26 degrees;
(3) two upper press rolls and a lower press roll of the second group of pre-forming roll mechanisms bend the strip steel into a shape that a left first inclined section and a right first inclined section are inclined upwards by 49.2-50.8 degrees;
(4) the strip steel is bent by two upper compression rollers and two lower compression rollers of the third group of pre-forming roller mechanisms to form a left first inclined section and a right first inclined section which are inclined upwards by 71.5-72.5 degrees;
(5) two upper compression rollers and two lower compression rollers of the fourth group of pre-forming roller mechanisms enable two bilaterally symmetrical second inclined sections in the middle of the strip steel roll bending to be upwards inclined by 12-14 degrees;
(6) two upper compression rollers and two lower compression rollers of the fifth group of forming front roller mechanisms enable two second inclined sections, which are formed by bending the strip steel roll and are arranged in the middle, to be inclined upwards by 25-27 degrees;
(7) two upper press rolls and a lower press roll of the sixth combined front roll mechanism enable two second inclined sections, which are formed by bending the strip steel roll and are arranged in the middle, to be inclined upwards by 38-40 degrees;
(8) two upper press rolls and a lower press roll of the seventh constitutive front roll mechanism enable two second inclined sections, which are formed in the middle of the strip steel roll bending, to be inclined upwards by 51-53 degrees;
(9) two upper press rolls and a lower press roll of the eighth combined front roll mechanism enable two second inclined sections, which are formed by bending the strip steel roll and are arranged in the middle, to be inclined upwards by 60.3-61.7 degrees;
(10) two upper press rolls and a lower press roll of the ninth combined front roll mechanism enable two second inclined sections, which are formed by bending the strip steel roll and are arranged in the middle, to be inclined upwards by 71.5-72.5 degrees;
(11) the strip steel moves to a first set of forming rear roll mechanism, an upper closed flat roll, a lower closed flat roll and two closed side rolls of the first set of forming rear roll mechanism bend the strip steel into two second inclined sections which are inclined upwards by 74.6-75.4 degrees, and the lower closed flat roll of the forming rear roll mechanism drives the strip steel to move backwards continuously;
(12) the upper closed flat roll, the lower closed flat roll and the two closed side rolls of the second set of forming rear roll mechanism bend the strip steel into two second inclined sections which are upwards inclined for 79.6-80.4 degrees;
(13) the upper closed flat roll, the lower closed flat roll and the two closed side rolls of the third group of forming rear roll mechanisms bend the strip steel into two second inclined sections which are inclined upwards by 84.8-85.2 degrees.
6. The production method of the flexible processing and forming production line of the adaptive special-shaped welded pipe according to claim 5, wherein the welding and sealing device extrudes the left side and the right side of strip steel with a second inclined section inclined upwards by 84.8-85.2 degrees, so that the strip steel surrounds a rectangular pipe and welds a seam, the water cooling device cools the welded rectangular welded pipe, the sizing device adjusts and determines the size of the rectangular welded pipe, and the straightening device straightens the rectangular welded pipe.
7. The production method of the flexible processing and forming production line of the self-adaptive special-shaped welded pipe according to claim 5, wherein the active feeding flat roller of the clamping and feeding device comprises two feeding flat rollers which correspond up and down, a roller shaft of any one feeding flat roller is in transmission connection with a driving motor through a speed reducer, the feeding flat rollers sequentially feed strip steel onto a first guide roller, a first pressure roller and a second guide roller, then the strip steel enters a first group of forming front rolling mechanism, the first guide roller and the second guide roller have the same structure, the first guide roller is a first guide flat roller or two left and right corresponding vertical guide rollers, and the pressure rollers comprise a plurality of up and down corresponding flat pressure rollers.
8. The production method of the adaptive special-shaped welded pipe flexible processing and forming production line according to the claim 5, characterized in that in the step (2), the first inclined sections are all inclined upwards by 25 degrees; in the step (3), the first inclined sections are inclined upwards by 50 degrees; the first inclined sections are inclined upwards by 72 degrees; the second inclined section is inclined upwards by 13 degrees in the step (5); in the step (6), the second inclined section is inclined upwards by 26 degrees; the second inclined section is inclined upwards by 39 degrees in the step (7); in the step (8), the second inclined section is inclined upwards for 52 degrees; in the step (9), the second inclined sections are all inclined upwards for 61 degrees, in the step (10), the second inclined sections are all inclined upwards for 72 degrees, in the step (11), the second inclined sections are all inclined upwards for 75 degrees, in the step (12), the second inclined sections are all inclined upwards for 80 degrees, and in the step (13), the second inclined sections are all inclined upwards for 85 degrees.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111490923.6A CN114192623A (en) | 2021-12-08 | 2021-12-08 | Flexible processing and forming production line and method for self-adaptive special-shaped welded pipe |
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| CN202111490923.6A CN114192623A (en) | 2021-12-08 | 2021-12-08 | Flexible processing and forming production line and method for self-adaptive special-shaped welded pipe |
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| CN113546997A (en) * | 2021-08-20 | 2021-10-26 | 张家港市中悦冶金设备科技有限公司 | Roll extrusion precision forming system for distance-adjusting type pipe |
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| US20110017804A1 (en) * | 2009-07-21 | 2011-01-27 | Olimpia 80 S.R.L. | Variable linear geometry machine for continuously forming square tubes |
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