CN117380798B - Forming machine and process of integrated forming press for large-caliber thick-wall steel pipe - Google Patents
Forming machine and process of integrated forming press for large-caliber thick-wall steel pipe Download PDFInfo
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- CN117380798B CN117380798B CN202311703558.1A CN202311703558A CN117380798B CN 117380798 B CN117380798 B CN 117380798B CN 202311703558 A CN202311703558 A CN 202311703558A CN 117380798 B CN117380798 B CN 117380798B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 32
- 239000010959 steel Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title abstract description 12
- 238000007493 shaping process Methods 0.000 claims abstract description 77
- 238000005452 bending Methods 0.000 claims abstract description 46
- 238000000465 moulding Methods 0.000 claims abstract description 15
- 238000003825 pressing Methods 0.000 claims description 116
- 238000001514 detection method Methods 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000012797 qualification Methods 0.000 abstract description 3
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
The invention relates to the technical field of pipe making, in particular to an integrated molding press molding machine and process for a large-caliber thick-wall steel pipe, comprising a base and a molding device; the bending device is arranged on the base and bends the pipe body; the extension rod is arranged on one side of the bending device in a sliding way along the radial direction of the tube body when the extension rod is not deformed after being bent, and the extension rod rotates around the circle center of the tube body; the rotating device is arranged at one side of the extension rod; the telescopic device is arranged at one side of the extension rod; the two first forming wheels are rotatably arranged at the end parts of the extension rod; the second shaping wheel is arranged on one side of the extension rod in a sliding manner along the length direction of the extension rod; the driving device is arranged on the extension rod; the pressure sensor is provided with a plurality of, and pressure sensor sets up respectively on first setting wheel and second setting wheel. The invention prevents the pipe body from rebound after bending, ensures that the radian of the produced pipe body meets the requirements, improves the product qualification rate and reduces the production cost.
Description
Technical Field
The invention relates to the technical field of pipe making, in particular to an integrated molding press forming machine and process for a large-caliber thick-wall steel pipe.
Background
Some bent pipe fittings are troublesome to bend, the existing profiling mode is to score lines (N lines) into N-1 sections of profiling, the size of parts is difficult to ensure, the requirement on the skill of operators is high, the period of pressing one part is long, the consistency of R size after pressing is poor, the indentation on the circumferential surface of a steel pipe is seriously required to be polished and putized, and the appearance quality after painting is seriously affected. The existing pipe bender equipment is utilized to design a push bending die, the method is feasible, but the hydraulic press molding process is changed into a push bending process, the input cost of the die is high, and the push bending die has a long manufacturing period. The oil press is used for designing a normal pressing die with a groove track, the method is feasible, but the pressing rebound empirical value is uncertain, the whole set of tool is long in manufacturing period, and the risk of qualified test die is high.
Chinese patent CN203679023U discloses a steel pipe bending mould, including upper and lower die holder, be equipped with upper and lower template on upper and lower die holder respectively, upper and lower template comprises by both sides board, is equipped with upper and lower mold core respectively in the upper and lower template, places the steel pipe between upper and lower mold core, and the face that upper and lower mold core is relative is as the shaping face, and the shaping face is the curved surface, and the curved surface corresponds the setting with the target crookedness of steel pipe. The contact surfaces of the upper and lower templates are arranged concentrically with the molding surface of the mold core. The upper die holder and the lower die holder are respectively provided with a mounting groove, and reinforcing ribs are arranged between the upper die holder and the lower die holder and between the upper die holder and the lower die holder.
The above-mentioned scheme can improve the quality of bending, but can only bend to the steel pipe of fixed size, can't bend to the thick wall steel pipe of multiple size, and current shaping press is easy to appear the radian when buckling to the multiple size steel pipe and do not meet the condition of requirement, and this is because after buckling, the steel pipe can take place certain resilience, lacks setting device, leads to the steel pipe radian after buckling can't satisfy expected effect, and then leads to the defective percentage to rise for manufacturing cost increases.
Disclosure of Invention
According to the integrated press forming machine and process for the large-caliber thick-wall steel pipe, the pipe body is pushed into the bending device to be bent, the extension rod is driven by the telescopic device according to the bent radius of the pipe body, the first forming wheel is driven by the extension rod to extend out, when the distance between the rotating circle centers of the first forming wheel and the extension rod is identical to the outer circle radius of the bent pipe body, the telescopic device stops running, the driving device drives the second forming wheel to slide along the length direction of the extension rod, after pressure values are detected by the pressure sensors on the first forming wheel and the second forming wheel, the driving device stops running, the rotation device drives the extension rod to reciprocate around the bent pipe body axis, the first forming wheel and the second forming wheel fix the pipe body completely, the pipe body after bending is prevented from springback phenomenon, the radian of the produced pipe body can meet the requirements, the product percent of pass is improved, and the production cost is reduced.
In order to solve the problems in the prior art, the invention provides an integrated molding press molding machine for large-caliber thick-wall steel pipes, which comprises a base and a molding device; the forming device comprises a bending device, a rotating device, a telescopic device, an extension rod, a first forming wheel, a second forming wheel, a driving device and a pressure sensor; the bending device is arranged on the base and bends the pipe body; the extension rod is arranged on one side of the bending device in a sliding way along the radial direction of the tube body when the extension rod is not deformed after being bent, and the extension rod rotates around the circle center of the tube body; the rotating device is arranged on one side of the extension rod and drives the extension rod to rotate around the circle center of the tube body when the extension rod is not deformed after being bent; the telescopic device is arranged on one side of the extension rod and drives the extension rod to move along the radial direction of the tube body when the extension rod is not deformed after being bent; the two first forming wheels are rotatably arranged at the end parts of the extension rods; the second shaping wheel is arranged on one side of the extension rod in a sliding manner along the length direction of the extension rod, the second shaping wheel and the two first shaping wheels form a triangle, and the distances from the two first shaping wheels to the second shaping wheels are the same; the driving device is arranged on the extension rod and drives the second shaping wheel to slide along the length direction of the extension rod; the pressure sensor is provided with a plurality of, and pressure sensor sets up respectively on first setting wheel and second setting wheel, is provided with the controller on the base, and pressure sensor passes through the operation of controller control telescoping device and rotating device.
Preferably, the rotating device comprises a first rotary driver, a rotating frame, a first gear and a toothed ring; the first rotary driver is horizontally arranged on one side of the bending device; the first gear is fixedly arranged at the output end of the first rotary driver; the gear ring is rotatably arranged on one side of the first gear, the first gear is meshed with the gear ring, and the axis of the gear ring is collinear with the axis of the pipe body when the gear ring is not deformed after being bent; the rotating frame is fixedly arranged on the toothed ring, the telescopic device is arranged on the rotating frame, and the extension rod is in sliding fit with the rotating frame along the radial direction of the tube body when the extension rod is not deformed after being bent.
Preferably, the telescopic device comprises a second rotary drive, a second gear and meshing teeth; the second rotary driver is fixedly arranged on the rotating frame; the second gear is fixedly arranged at the output end of the second rotary driver; the meshing teeth are provided with a plurality of, the meshing teeth are uniformly arranged on the extension rod along the length direction of the extension rod, and the second gear is meshed with the meshing teeth.
Preferably, the driving device comprises a first linear driver, a sliding block and a sliding chute; the first linear driver is fixedly arranged on the extension rod along the length direction of the extension rod; the sliding groove is formed in the extension rod along the length direction of the extension rod; the sliding block is fixedly connected with the output end of the first linear driver, the sliding block is arranged in the sliding groove in a sliding manner along the length direction of the sliding groove, and the second shaping wheel is rotatably arranged on the sliding block.
Preferably, the bending device comprises a second linear driver, a positioning rod, a first pressing frame, a first pressing wheel, a first pull rope type distance meter and an excircle diameter detection device; the second linear driver is vertically arranged above the base; the positioning rod is fixedly arranged on one side of the second linear driver along the width direction of the base, and the axis of the positioning rod is collinear with the axis of the pipe body when the pipe body is bent; the first pressing frame is fixedly arranged at the output end of the second linear driver; the first pressing wheel is rotationally arranged on the first pressing frame and presses the pipe body; the first rope pulling type distance meter is vertically arranged on one side of the first pressing frame, and the output end of the first rope pulling type distance meter is fixedly connected with the positioning rod; the excircle diameter detection device is arranged on the base and is used for the joint pipe body.
Preferably, the bending device further comprises a spring; the first pressing wheel is provided with two, is provided with first mounting bracket on every first pressing wheel, and two first mounting brackets symmetry set up on first pressing frame, and the mounting bracket is articulated along the length direction of base with first pressing frame, and after first pressing wheel contacted with the body, the axis of first pressing wheel is parallel with the cross-section excircle tangential direction of body, and the both ends of spring are respectively with first mounting bracket and first pressing frame fixed connection.
Preferably, the outer circle diameter detection device comprises a second pressing frame, a second pressing wheel, a second pull rope type range finder, a sliding table and a third linear driver; two second pressing frames are arranged, and the two second pressing frames are symmetrically arranged relative to the first pressing frame; four second pressing wheels are arranged, two second pressing wheels are arranged on each second pressing frame, a second mounting frame is arranged on the outer side of each second pressing wheel, and the second mounting frames are hinged with the second pressing frames; the second rope pulling type distance meter is arranged on one side of the second pressing frame, the output end of the second rope pulling type distance meter is fixedly connected with the positioning rod, and the second rope pulling type distance meter is used for measuring the distance between the second pressing frame and the positioning rod; the sliding table is horizontally and fixedly arranged at the bottom of the second pressing frame; the third linear driver is vertically arranged below the sliding table and drives the sliding table to move along the height direction of the base.
Preferably, the bending device further comprises a first laser distance meter, a second laser distance meter and a connecting shaft; the first laser range finder is vertically arranged on the first pressing frame, and the output end of the first laser range finder points to the pipe body; the second laser range finder is rotatably arranged on the second pressing frame, and the output end of the second laser range finder points to the pipe body; the two ends of the connecting shaft are respectively fixedly connected with the second laser range finder and the second pull rope type range finder.
Preferably, the angle between the first laser rangefinder and the second laser rangefinder is greater than 30 degrees.
The invention also relates to an integral forming process of the large-caliber thick-wall steel pipe, which comprises the following specific steps:
s1, pushing a pipe body into a bending device for bending, driving an extension rod by a telescopic device according to the radius of the bent pipe body, driving a first shaping wheel to extend by the extension rod, and stopping running of the telescopic device when the distance between the rotating circle centers of the first shaping wheel and the extension rod is the same as the radius of the outer ring of the bent pipe body;
s2, the driving device drives the second shaping wheel to slide along the length direction of the extension rod, and when pressure sensors on the first shaping wheel and the second shaping wheel detect pressure values, the driving device stops running;
s3, driving the extension rod to reciprocate around the axis of the bent pipe body by the rotating device, and fixing the pipe body after the first shaping wheel and the second shaping wheel are completed.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the bending device, the rotating device, the telescopic device, the extension rod, the first shaping wheel, the second shaping wheel, the driving device and the pressure sensor are arranged, the pipe body is pushed into the bending device to be bent, the telescopic device drives the extension rod according to the bent radius of the pipe body, the extension rod drives the first shaping wheel to extend out, when the distance between the rotating circle centers of the first shaping wheel and the extension rod is the same as the radius of the outer ring of the bent pipe body, the telescopic device stops running, the driving device drives the second shaping wheel to slide along the length direction of the extension rod, when the pressure sensors on the first shaping wheel and the second shaping wheel detect the pressure value, the driving device stops running, the rotating device drives the extension rod to reciprocate around the bent pipe body axis, and the first shaping wheel and the second shaping wheel fix the completely bent pipe body, so that the rebound phenomenon of the bent pipe body is prevented, the radian of the produced pipe body can meet the requirements, the product qualification rate is improved, and the production cost is reduced.
Drawings
Fig. 1 is a schematic perspective view of an integral molding press for large-caliber thick-wall steel pipes.
Fig. 2 is a schematic perspective view of an integrated press forming machine for forming large-caliber thick-wall steel pipes, with a base removed.
Fig. 3 is an enlarged partial schematic view of a large-caliber thick-wall steel pipe at a point a in fig. 2 of an integral molding press molding machine.
Fig. 4 is a second perspective view of the integrated press forming machine with the base removed for a large-caliber thick-wall steel pipe.
FIG. 5 is an enlarged partial schematic view of the press forming machine for forming large-diameter thick-wall steel pipe in FIG. 4 at B
Fig. 6 is a schematic perspective view of an integrated press forming machine for forming a large-caliber thick-wall steel pipe, from which a third linear actuator and a base are removed.
Fig. 7 is a second perspective view of an integrated press forming machine for forming a large-caliber thick-wall steel pipe, from which a third linear actuator and a base are removed.
Fig. 8 is an enlarged partial schematic view of the integral press forming machine of fig. 7C for a large-caliber thick-wall steel pipe.
Fig. 9 is a perspective view of an integrated press forming machine for forming a large-caliber thick-wall steel pipe, from which a first rotary driver, a first gear, a rotating frame, a third linear driver and a base are removed.
Fig. 10 is a perspective view of an outer circle diameter detecting device of an integrated press forming machine for forming a large-caliber thick-wall steel pipe, from which a third linear driver is removed.
The reference numerals in the figures are:
1-a base; 2-a forming device; 21-bending means; 211-a second linear drive; 212-positioning a rod; 213-a first press frame; 2131-a first press wheel; 2132-a first pull-rope rangefinder; 2133-spring; 214-an outer circle diameter detection device; 2141-a second pressing frame; 2142-a second press wheel; 2143-a second pull-rope rangefinder; 2144-a slipway; 2145-a third linear drive; 215-a first laser rangefinder; 216-a second laser rangefinder; 217-connecting shaft; 22-rotating means; 221-a first rotary drive; 222-rotating frame; 223-a first gear; 224-tooth ring; 23-telescoping device; 231-a second rotary drive; 232-a second gear; 233-a tooth; 24-extension rod; 241-first forming wheel; 242-a second shaping wheel; 243-driving means; 2431-first linear drive; 2432-slider; 2433-chute; 3-tube body.
Detailed Description
The invention will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the invention and the specific objects and functions achieved.
Referring to fig. 1, 2 and 4: an integrated molding press forming machine for large-caliber thick-wall steel pipes comprises a base 1 and a forming device 2; the forming device 2 comprises a bending device 21, a rotating device 22, a telescopic device 23, an extension rod 24, a first forming wheel 241, a second forming wheel 242, a driving device 243 and a pressure sensor; the bending device 21 is arranged on the base 1, and the bending device 21 bends the pipe 3; the extension rod 24 is slidably arranged at one side of the bending device 21 along the radial direction of the tube body 3 when the extension rod 24 is not deformed after bending, and the extension rod 24 rotates around the circle center of the tube body 3; the rotating device 22 is arranged at one side of the extension rod 24, and the rotating device 22 drives the extension rod 24 to rotate around the circle center of the pipe body 3 when the extension rod 24 is not deformed after being bent; the telescopic device 23 is arranged on one side of the extension rod 24, and the telescopic device 23 drives the extension rod 24 to move along the radial direction of the pipe body 3 when the extension rod 24 is not deformed after being bent; two first shaping wheels 241 are provided, and the two first shaping wheels 241 are rotatably provided at the end of the extension rod 24; the second shaping wheel 242 is slidably arranged at one side of the extension rod 24 along the length direction of the extension rod 24, the second shaping wheel 242 and the two first shaping wheels 241 form a triangle, and the distances from the two first shaping wheels 241 to the second shaping wheels 242 are the same; the driving device 243 is arranged on the extension rod 24, and the driving device 243 drives the second shaping wheel 242 to slide along the length direction of the extension rod 24; the pressure sensor is provided with a plurality of, and pressure sensor sets up respectively on first setting wheel 241 and second setting wheel 242, is provided with the controller on the base 1, and pressure sensor passes through the operation of controller control telescoping device 23 and rotating device 22.
The second shaping wheel 242 and the two first shaping wheels 241 together form a triangle, the distances from the two first shaping wheels 241 to the second shaping wheels 242 are always equal, for convenience in description, the two distances from the two first shaping wheels 241 to the second shaping wheels 242 are respectively called a first gap and a second gap, the bent pipe body 3 sequentially passes through the first gap and the second gap, because the extension rod 24 rotates around the axis of the bent pipe body 3, the distance from the second shaping wheels 242 to the center of rotation of the extension rod 24 is the same as the radius of the inner ring of the bent pipe body 3, the distance from the first shaping wheels 241 to the center of rotation of the extension rod 24 is the same as the radius of the outer ring of the bent pipe body 3, the pipe body 3 is pushed into the bending device 21 for bending, the extension rod 24 is driven by the telescopic device 23 according to the bent radius of the pipe body 3, the extension rod 24 drives the first shaping wheels 241 to extend, when the distance between the rotating centers of the first shaping wheel 241 and the extension rod 24 is the same as the radius of the outer ring of the bent pipe body 3, the telescopic device 23 stops running, the bent pipe body 3 slides over from one side of the first shaping wheel 241, the outer ring side wall of the bent pipe body 3 contacts with the first shaping wheel 241, the driving device 243 drives the second shaping wheel 242 to slide along the length direction of the extension rod 24, after the pressure sensors on the first shaping wheel 241 and the second shaping wheel 242 detect the pressure value, the driving device 243 stops running, the rotating device 22 drives the extension rod 24 to reciprocally rotate around the axis of the bent pipe body 3, the first shaping wheel 241 and the second shaping wheel 242 fix the completely bent pipe body 3, if the pressure sensor on any one of the first shaping wheel 241 or the second shaping wheel 242 does not detect the pressure, the radian of the pipe body 3 is not in accordance with the preset requirement, so telescoping device 23 need continue to operate, and rotating device 22 also need synchronous operation simultaneously, so guarantee that body 3 can even atress at the correction in-process, guaranteed that body 3 can not take place to buckle the phenomenon, prevented that body 3 after the bending from taking place to kick-back the phenomenon for body 3 radian that produces can accord with the requirement, has improved the product qualification rate, has reduced manufacturing cost.
Referring to fig. 4 and 8: the turning device 22 comprises a first rotary drive 221, a turret 222, a first gear 223 and a toothed ring 224; the first rotary driver 221 is horizontally disposed at one side of the bending device 21; the first gear 223 is fixedly provided on the output end of the first rotary driver 221; the toothed ring 224 is rotatably arranged at one side of the first gear 223, the first gear 223 is meshed with the toothed ring 224, and the axis of the toothed ring 224 is collinear with the axis of the pipe body 3 when the pipe body is not deformed after being bent; the rotating frame 222 is fixedly arranged on the toothed ring 224, the telescopic device 23 is arranged on the rotating frame 222, and the extension rod 24 is in sliding fit with the rotating frame 222 along the radial direction of the pipe body 3 when the extension rod is not deformed after being bent.
The first rotary driver 221 is preferably a servo motor, and when the first rotary driver 221 is started, the first rotary driver 221 drives the first gear 223 to rotate, and the first gear 223 and the toothed ring 224 are meshed with each other, so that the first gear 223 rotating can drive the toothed ring 224 to rotate, and the rotating frame 222 fixedly arranged with the gear rotates synchronously, and the axis of the toothed ring 224 is collinear with the axis of the tube body 3 when the tube body is not deformed after being bent, so that the extension rod 24 arranged on the rotating frame 222 can rotate synchronously therewith.
Referring to fig. 2 and 9: the telescopic device 23 comprises a second rotary drive 231, a second gear 232 and a meshing tooth 233; the second rotary driver 231 is fixedly provided on the turret 222; the second gear 232 is fixedly disposed on the output end of the second rotary driver 231; the plurality of the engagement teeth 233 are provided, the engagement teeth 233 are uniformly provided on the extension rod 24 in the length direction of the extension rod 24, and the second gear 232 is engaged with the engagement teeth 233.
The second rotary driver 231 is preferably a servo motor, and when the second rotary driver 231 is started, the second rotary driver 231 drives the second gear 232 to rotate, and the second gear 232 drives the extension rod 24 to slide along the radial direction of the bent pipe body 3 due to the meshing of the meshing teeth 233 and the second gear 232.
Referring to fig. 2 and 5: the driving device 243 includes a first linear actuator 2431, a sliding block 2432, and a sliding groove 2433; the first linear actuator 2431 is fixedly provided on the extension rod 24 along the length direction of the extension rod 24; the chute 2433 is arranged on the extension rod 24 along the length direction of the extension rod 24; the sliding block 2432 is fixedly connected with the output end of the first linear driver 2431, the sliding block 2432 is slidably arranged in the sliding groove 2433 along the length direction of the sliding groove 2433, and the second shaping wheel 242 is rotatably arranged on the sliding block 2432.
The first linear driver 2431 is preferably a linear cylinder, when the first linear driver 2431 is started, the first linear driver 2431 drives the sliding block 2432 to slide in the sliding groove 2433, after the second shaping wheel 242 arranged on the sliding block 2432 is contacted with the pipe body 3, all the pressure sensors arranged on the first shaping wheel 241 and the second shaping wheel 242 can detect the pressure, if the pressure value on one of the pressure sensors is too small and the pressure value on the other pressure sensor is too large, a certain rebound of the pipe body 3 is indicated, so that the rotating device 22 is started, the rotating device 22 drives the extension rod 24 to rotate, the pipe body 3 can be corrected to the correct radian under the reciprocating rolling of the first shaping wheel 241 and the second shaping wheel 242, and the change of the radian of the pipe body 3 after being bent is prevented.
Referring to fig. 2, 3 and 6: the bending device 21 comprises a second linear driver 211, a positioning rod 212, a first pressing frame 213, a first pressing wheel 2131, a first pull rope type range finder 2132 and an outer circle diameter detection device 214; the second linear driver 211 is vertically disposed above the base 1; the positioning rod 212 is fixedly arranged on one side of the second linear actuator 211 along the width direction of the base 1, and the axis of the positioning rod 212 is collinear with the axis of the pipe body 3 when the pipe body is bent; the first pressing frame 213 is fixedly disposed on the output end of the second linear actuator 211; the first pressing wheel 2131 is rotatably provided on the first pressing frame 213, and the first pressing wheel 2131 presses the pipe body 3; the first rope pulling type range finder 2132 is vertically arranged on one side of the first pressing frame 213, and the output end of the first rope pulling type range finder 2132 is fixedly connected with the positioning rod 212; the outer diameter detection device 214 is provided on the base 1, and the outer diameter detection device 214 is used for receiving the pipe body 3.
The second linear driver 211 is preferably a linear cylinder, when the second linear driver 211 is started, the second linear driver 211 drives the first pressing frame 213 to descend, the descending first pressing frame 213 presses the pipe body 3 located on the outer circle diameter detection device 214 through the first pressing wheel 2131, the pipe body 3 is bent after being pressed by the first pressing wheel 2131, the first pull rope type distance meter 2132 is used for monitoring the distance between the first pressing frame 213 and the positioning rod 212, and when the value detected by the first pull rope type distance meter 2132 is the same as the radius of the bending required by the pipe body 3, the second linear driver 211 stops running.
Referring to fig. 3: the bending device 21 further comprises a spring 2133; the first pressing wheel 2131 is provided with two, is provided with first mounting bracket on every first pressing wheel 2131, and two first mounting brackets symmetry set up on first pressing frame 213, and the mounting bracket articulates along the length direction of base 1 with first pressing frame 213, and after first pressing wheel 2131 contacted with body 3, the axis of first pressing wheel 2131 was parallel with the cross-section excircle tangential direction of body 3, the both ends of spring 2133 respectively with first mounting bracket and first pressing frame 213 fixed connection.
The distance between the two first installation racks is unchanged all the time, when the first pressing wheel 2131 contacts with the pipe body 3, the first pressing wheel 2131 can correspondingly rotate along with the diameter of the pipe body 3, for convenience of understanding, a hypothesis is made here, if the first pressing wheel 2131 is in a horizontal state initially, when the diameter of the pipe body 3 is larger, the rotation angle of the first pressing wheel 2131 is smaller when the pipe body 3 contacts with the first pressing wheel 2131, conversely, the rotation angle of the first pressing wheel 2131 is larger, and after bending is completed, the first pressing wheel 2131 needs to be reset through the spring 2133, and the first pressing wheel 2131 is ensured to be in a horizontal state all the time through pulling of the spring 2133.
Referring to fig. 2, 4 and 10: the outer circle diameter detection device 214 includes a second pressing frame 2141, a second pressing wheel 2142, a second pull rope type range finder 2143, a sliding table 2144, and a third linear driver 2145; two second pressing frames 2141 are provided, and the two second pressing frames 2141 are symmetrically provided with respect to the first pressing frame 213; four second pressing wheels 2142 are arranged, two second pressing wheels 2142 are arranged on each second pressing frame 2141, a second mounting frame is arranged on the outer side of each second pressing wheel 2142, and the second mounting frames are hinged with the second pressing frames 2141; the second rope-pulling type distance meter 2143 is disposed at one side of the second pressing frame 2141, an output end of the second rope-pulling type distance meter 2143 is fixedly connected with the positioning rod 212, and the second rope-pulling type distance meter 2143 is used for measuring a distance between the second pressing frame 2141 and the positioning rod 212; the sliding table 2144 is horizontally and fixedly arranged at the bottom of the second pressing frame 2141; the third linear driver 2145 is vertically disposed below the sliding table 2144, and the third linear driver 2145 drives the sliding table 2144 to move along the height direction of the base 1.
The third linear driver 2145 is preferably a linear cylinder, the third linear driver 2145 drives the second pressing frame 2141 to rise, the second pressing wheels 2142 receive the pipe body 3, sliding tables 2144 are disposed under the two second pressing frames 2141, the two sliding tables 2144 synchronously drive the two second pressing frames 2141 to separate or approach, and when the radius of the outer ring of the pipe body 3 is the same as the vertical radius measured by the second rope pulling type distance meter 2143, the third linear driver 2145 stops running.
Referring to fig. 6-10: the bending device 21 further comprises a first laser rangefinder 215, a second laser rangefinder 216 and a connecting shaft 217; the first laser range finder 215 is vertically arranged on the first pressing frame 213, and the output end of the first laser range finder 215 points to the pipe body 3; the second laser range finder 216 is rotatably arranged on the second pressing frame 2141, and the output end of the second laser range finder 216 points to the pipe body 3; the two ends of the connecting shaft 217 are fixedly connected with the second laser range finder 216 and the second rope pulling type range finder 2143 respectively.
Since two first pressing wheels 2131 are disposed on the same first pressing frame 213 and two second pressing wheels 2142 are disposed on the same second pressing frame 2141, the first pressing wheels 2131 and the second pressing wheels 2142 can increase stress points of the tube body 3, so that the situation that the side wall of the tube body 3 is deformed by collapsing when the tube body 3 is bent is avoided, but an error exists in the distance between the first pressing frame 213 and the tube body 3, that is, the distance measured by the first laser rangefinder 215 plus the distance measured by the first pull rope rangefinder 2132 is the distance between the contact position of the first pressing frame 213 and the tube body 3 and the positioning rod 212, that is, the sum of the distance measured by the first laser rangefinder 215 plus the size measured by the first pull rope rangefinder 2132 is called N1, when the radius of the inner ring of the pipe body 3 is the same as N1, the second linear driver 211 stops running, the result obtained by subtracting the measured size of the second gian optical rangefinder from the measured size of the second pull rope type rangefinder 2143 is referred to as N2, when the radius of the outer ring of the pipe body 3 is the same as N2, the third linear driver 2145 stops running, and as the extension line of the output end of the second laser rangefinder 216 needs to intersect with the axis of the positioning rod 212, the accuracy of the N2 result can be ensured, and a connecting shaft 217 is fixedly arranged between the second laser rangefinder 216 and the second pull rope type rangefinder 2143, so that the second pull rope type rangefinder 2143 drives the second laser rangefinder 216 to synchronously rotate through the connecting shaft 217.
Referring to fig. 6: the angle between the first laser rangefinder 215 and the second laser rangefinder 216 is greater than 30 degrees.
When the included angle between the first laser rangefinder 215 and the second laser rangefinder 216 is greater than 30 degrees, the first pressing wheel 2131 can better press and bend the tube body 3, if the included angle between the first laser rangefinder 215 and the second laser rangefinder is less than 30 degrees, the tube body 3 section between the two second pressing frames 2141 has larger strength, the first pressing wheel 2131 can flatten the upper portion of the tube body 3 during pressing, the included angle between the first laser rangefinder 215 and the second laser rangefinder 216 determines the distance between the two second pressing frames 2141, and thus the distance between the two second pressing frames 2141 needs to be adjusted according to practical situations, so that the tube body 3 is ensured not to be crushed when being pressed by the first pressing wheel 2131.
Referring to fig. 1-10: the invention also relates to an integral forming process of the large-caliber thick-wall steel pipe, which comprises the following specific steps:
s1, pushing a pipe body 3 into a bending device 21 for bending, driving an extension rod 24 by a telescopic device 23 according to the radius of the bent pipe body 3, driving a first shaping wheel 241 to extend by the extension rod 24, and stopping running of the telescopic device 23 when the distance between the first shaping wheel 241 and the rotating circle center of the extension rod 24 is the same as the radius of the outer ring of the bent pipe body 3;
s2, the driving device 243 drives the second shaping wheel 242 to slide along the length direction of the extension rod 24, and when the pressure sensors on the first shaping wheel 241 and the second shaping wheel 242 detect pressure values, the driving device 243 stops running;
s3, the rotating device 22 drives the extension rod 24 to rotate reciprocally around the axis of the bent pipe body 3, and the first shaping wheel 241 and the second shaping wheel 242 fix the pipe body 3 after being completely bent.
The foregoing examples merely illustrate one or more embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of the invention should be assessed as that of the appended claims.
Claims (4)
1. An integrated molding press for large-caliber thick-wall steel pipes comprises a base (1) and a molding device (2);
the forming device (2) is characterized by comprising a bending device (21), a rotating device (22), a telescopic device (23), an extension rod (24), a first forming wheel (241), a second forming wheel (242), a driving device (243) and a pressure sensor;
the bending device (21) is arranged on the base (1), and the bending device (21) bends the pipe body (3);
the extension rod (24) is arranged on one side of the bending device (21) in a sliding way along the radial direction of the pipe body (3) when the pipe body is not deformed after being bent, and the extension rod (24) rotates around the circle center of the pipe body (3);
the rotating device (22) is arranged on one side of the extension rod (24), and the rotating device (22) drives the extension rod (24) to rotate around the center of the tube body (3) when the extension rod is not deformed after being bent;
the telescopic device (23) is arranged on one side of the extension rod (24), and the telescopic device (23) drives the extension rod (24) to move along the radial direction of the tube body (3) when the extension rod is not deformed after being bent;
two first forming wheels (241) are arranged, and the two first forming wheels (241) are rotatably arranged at the end parts of the extension rod (24);
the second shaping wheel (242) is arranged on one side of the extension rod (24) in a sliding manner along the length direction of the extension rod (24), the second shaping wheel (242) and the two first shaping wheels (241) form a triangle, and the distances from the two first shaping wheels (241) to the second shaping wheels (242) are the same;
the driving device (243) is arranged on the extension rod (24), and the driving device (243) drives the second shaping wheel (242) to slide along the length direction of the extension rod (24);
the pressure sensors are arranged on the first shaping wheel (241) and the second shaping wheel (242) respectively, a controller is arranged on the base (1), and the pressure sensors control the expansion device (23) and the rotating device (22) to operate through the controller;
the rotating device (22) comprises a first rotary driver (221), a rotating frame (222), a first gear (223) and a toothed ring (224);
the first rotary driver (221) is horizontally arranged at one side of the bending device (21);
the first gear (223) is fixedly arranged on the output end of the first rotary driver (221);
the toothed ring (224) is rotatably arranged on one side of the first gear (223), the first gear (223) is meshed with the toothed ring (224), and the axis of the toothed ring (224) is collinear with the axis of the pipe body (3) when the pipe body is not deformed after being bent;
the rotating frame (222) is fixedly arranged on the toothed ring (224), the telescopic device (23) is arranged on the rotating frame (222), and the extension rod (24) is in sliding fit with the rotating frame (222) along the radial direction of the pipe body (3) when the extension rod is not deformed after being bent;
the telescopic device (23) comprises a second rotary driver (231), a second gear (232) and meshing teeth (233);
the second rotary driver (231) is fixedly arranged on the rotating frame (222);
the second gear (232) is fixedly arranged on the output end of the second rotary driver (231);
the plurality of the meshing teeth (233) are arranged, the meshing teeth (233) are uniformly arranged on the extension rod (24) along the length direction of the extension rod (24), and the second gear (232) is meshed with the meshing teeth (233);
the bending device (21) comprises a second linear driver (211), a positioning rod (212), a first pressing frame (213), a first pressing wheel (2131), a first pull rope type distance meter (2132) and an excircle diameter detection device (214);
the second linear driver (211) is vertically arranged above the base (1);
the positioning rod (212) is fixedly arranged on one side of the second linear driver (211) along the width direction of the base (1), and the axis of the positioning rod (212) is collinear with the axis of the pipe body (3) when the pipe body is bent;
the first pressing frame (213) is fixedly arranged at the output end of the second linear driver (211);
the first pressing wheel (2131) is rotatably arranged on the first pressing frame (213), and the first pressing wheel (2131) presses the pipe body (3);
the first rope pulling type range finder (2132) is vertically arranged on one side of the first pressing frame (213), and the output end of the first rope pulling type range finder (2132) is fixedly connected with the positioning rod (212);
the outer circle diameter detection device (214) is arranged on the base (1), and the outer circle diameter detection device (214) is used for receiving the pipe body (3);
the excircle diameter detection device (214) comprises a second pressing frame (2141), a second pressing wheel (2142), a second stay cord type distance meter (2143), a sliding table (2144) and a third linear driver (2145);
two second pressing frames (2141) are arranged, and the two second pressing frames (2141) are symmetrically arranged relative to the first pressing frame (213);
four second pressing wheels (2142) are arranged, two second pressing wheels (2142) are arranged on each second pressing frame (2141), a second mounting frame is arranged on the outer side of each second pressing wheel (2142), and the second mounting frames are hinged with the second pressing frames (2141);
the second rope pulling type distance meter (2143) is arranged on one side of the second pressing frame (2141), the output end of the second rope pulling type distance meter (2143) is fixedly connected with the positioning rod (212), and the second rope pulling type distance meter (2143) is used for measuring the distance between the second pressing frame (2141) and the positioning rod (212);
the sliding table (2144) is horizontally and fixedly arranged at the bottom of the second pressing frame (2141);
the third linear driver (2145) is vertically arranged below the sliding table (2144), and the third linear driver (2145) drives the sliding table (2144) to move along the height direction of the base (1);
the bending device (21) further comprises a first laser distance meter (215), a second laser distance meter (216) and a connecting shaft (217);
the first laser range finder (215) is vertically arranged on the first pressing frame (213), and the output end of the first laser range finder (215) points to the pipe body (3);
the second laser range finder (216) is rotatably arranged on the second pressing frame (2141), and the output end of the second laser range finder (216) points to the pipe body (3);
the two ends of the connecting shaft (217) are respectively fixedly connected with the second laser range finder (216) and the second pull rope type range finder (2143).
2. The integrated press for forming large-caliber thick-wall steel pipes according to claim 1, wherein the driving device (243) comprises a first linear actuator (2431), a sliding block (2432) and a sliding groove (2433);
the first linear actuator (2431) is fixedly arranged on the extension rod (24) along the length direction of the extension rod (24);
the chute (2433) is arranged on the extension rod (24) along the length direction of the extension rod (24);
the sliding block (2432) is fixedly connected with the output end of the first linear driver (2431), the sliding block (2432) is arranged in the sliding groove (2433) in a sliding manner along the length direction of the sliding groove (2433), and the second shaping wheel (242) is rotatably arranged on the sliding block (2432).
3. An integrated press for forming large-caliber thick-walled steel pipes according to claim 1 characterized in that the bending means (21) further comprises springs (2133);
the utility model provides a press wheel (2131) is provided with two, is provided with first mounting bracket on every first press wheel (2131), and two first mounting brackets symmetry set up on first press frame (213), and the mounting bracket articulates along the length direction of base (1) with first press frame (213), and after first press wheel (2131) contacted with body (3), the axis of first press wheel (2131) is parallel with the cross-section excircle tangential direction of body (3), the both ends of spring (2133) respectively with first mounting bracket and first press frame (213) fixed connection.
4. An integrated press for forming large diameter thick wall steel pipes according to claim 1, characterized in that the angle between the first laser distance meter (215) and the second laser distance meter (216) is larger than 30 degrees.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311703558.1A CN117380798B (en) | 2023-12-13 | 2023-12-13 | Forming machine and process of integrated forming press for large-caliber thick-wall steel pipe |
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|---|---|---|---|
| CN202311703558.1A CN117380798B (en) | 2023-12-13 | 2023-12-13 | Forming machine and process of integrated forming press for large-caliber thick-wall steel pipe |
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| CN117380798B true CN117380798B (en) | 2024-02-27 |
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| JP2014140860A (en) * | 2013-01-23 | 2014-08-07 | Kagoshima Prefecture | Method for specifying three-dimensional dead zone shape in extrusion |
| CN108941382A (en) * | 2018-07-02 | 2018-12-07 | 佛山新籁工程科技有限公司 | A kind of reinforcing bar capture device of the construction site with measured length cutting |
| CN213671253U (en) * | 2020-10-27 | 2021-07-13 | 张家港市华奥特种制冷设备有限公司 | Bending mechanism of copper pipe for evaporator of air cooler |
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2023
- 2023-12-13 CN CN202311703558.1A patent/CN117380798B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4763506A (en) * | 1987-03-13 | 1988-08-16 | Zeng Jun Lang | Automatic tube bending machine |
| CN1210043A (en) * | 1997-08-29 | 1999-03-10 | 利里建筑机械有限公司 | Universal machine for bending pipes or section bars to both fixed and variable curvatures |
| CN101077512A (en) * | 2006-05-25 | 2007-11-28 | 颖霖机械工业股份有限公司 | Tube-bending machine rotating-barrel mechanism |
| JP2014140860A (en) * | 2013-01-23 | 2014-08-07 | Kagoshima Prefecture | Method for specifying three-dimensional dead zone shape in extrusion |
| CN103128142A (en) * | 2013-02-06 | 2013-06-05 | 天津二十冶建设有限公司 | Electrical pipe bending device based on programmable logic controller (PLC) control and pipe bending method thereof |
| CN108941382A (en) * | 2018-07-02 | 2018-12-07 | 佛山新籁工程科技有限公司 | A kind of reinforcing bar capture device of the construction site with measured length cutting |
| CN213671253U (en) * | 2020-10-27 | 2021-07-13 | 张家港市华奥特种制冷设备有限公司 | Bending mechanism of copper pipe for evaporator of air cooler |
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| CN117380798A (en) | 2024-01-12 |
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