CN113210512A - Full-automatic flaring production device and production method for steel pipe and flaring die - Google Patents
Full-automatic flaring production device and production method for steel pipe and flaring die Download PDFInfo
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- CN113210512A CN113210512A CN202110568921.8A CN202110568921A CN113210512A CN 113210512 A CN113210512 A CN 113210512A CN 202110568921 A CN202110568921 A CN 202110568921A CN 113210512 A CN113210512 A CN 113210512A
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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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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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
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/08—Tube expanders
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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
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/02—Enlarging
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Abstract
The invention provides a full-automatic flaring production device and method for a steel pipe and a flaring die, relates to the technical field of non-cutting machining of metal pipes, and solves the problems of low specificity of machining equipment, poor production continuity, low efficiency, poor pipe orifice forming and easiness in breakage during flaring of the steel pipe. The flaring die (15) for flaring the steel pipe and the forming die for pressing the locking groove at the flaring end are simultaneously arranged on the same mounting seat (12) by adopting the structural design of the flaring-end rotating wheel type die, so that the flaring processing and the locking groove processing of the steel pipe can be realized at one station; meanwhile, the other end without flaring is provided with another set of forming die, so that the working hours and the occupied stations required by flaring and press forming of the steel pipe are greatly shortened, and the miniaturization and integration of the equipment volume are also promoted; in addition, the flaring die (15) is optimally designed, so that cracks are avoided, and deformation and breakage in the later period are prevented.
Description
Technical Field
The invention relates to the technical field of non-cutting machining of metal pipes, in particular to a full-automatic flaring production device and method for a steel pipe and a flaring die.
Background
When the steel pipes are connected, one end of one steel pipe is inserted into one end of the other steel pipe passing through the flaring, so that the connection between the steel pipes is realized. The prior steel pipe flaring device mainly comprises a flaring die and a steel pipe heating mechanism arranged on the die, wherein when the flaring of the steel pipe is realized by using the device, one end of the steel pipe is inserted into the flaring die, and the flaring is realized by the die while the heating mechanism finishes the heating of the steel pipe. When fluid transportation and transfer are involved, the sealing performance of a steel pipe joint needs to be improved in a reasonable mode under the condition that a steel pipe needs to bear certain pressure without adopting a connection mode such as welding and the like, and a sealing rubber ring is added at the steel pipe joint; the sealing rubber ring needs to be arranged at a mounting position, and the mounting position needs to be processed at the corresponding position of the end head of the steel pipe through a die.
Current steel pipe flaring and processing equipment, basically, adopt single assembly line processing mode, the flaring, end processing is gone on in proper order, carry backward after the flaring is accomplished, reach corresponding station and carry out other processing again, the steel pipe end needs to repeat a lot of heating, the heating interval time is long, calorific loss is big, the temperature drops fast, and can form the annealing many times of steel pipe, influence the material performance of steel pipe, the crackle appears easily in the steel pipe, and then scrap, will prevent that the steel pipe from producing the crackle when the flaring, except guaranteeing steel pipe self material, the design and the cooperation in service behavior of flaring mould are also crucial.
Disclosure of Invention
The invention provides a full-automatic flaring production device and method for a steel pipe and a flaring die, and solves the problems of the prior art that processing equipment is not matched, the specificity is not strong, the production continuity is poor, the production efficiency is low, the pipe orifice forming is poor and the pipe orifice is easy to damage when the steel pipe is flared.
In order to achieve the purpose, the invention adopts the following technical scheme that the full-automatic flaring production device for the steel pipe is characterized in that: the device comprises a steel pipe conveying and lifting mechanism and a steel pipe flaring machining mechanism;
the steel pipe conveying and lifting mechanism is divided into two parts, namely a pipe inlet support 1 and a pipe outlet support 2 which are respectively arranged at two ends, wherein the pipe inlet support 1 and the pipe outlet support 2 are both of a structure that a feeding end is higher than a discharging end, and a material baffle plate 3 is arranged at the discharging end;
two ends of the joint of the pipe inlet support 1 and the pipe outlet support 2 are respectively provided with a steel pipe lifting mechanism, and the steel pipe lifting mechanism specifically comprises a vertical hydraulic device 4 and a steel pipe guide plate 5 fixed at the end part of a hydraulic rod; the steel pipe guide plate 5 also adopts a structure from high to low from the inlet end to the outlet end, and the middle part and the inlet end are respectively provided with an arc-shaped material shifting plate 6 for shifting the steel pipe which is not flared and the steel pipe which is flared to be conveyed backwards.
The steel pipe flaring processing agency sets up in the inside and outside both sides of advancing pipe support 1 and exit tube support 2 handing-over department, and its concrete structure includes: the device comprises a base 7 fixed on the ground, a left end plate 8 and a right end plate 9 arranged at two ends of the base 7, a support shaft 10 arranged at the upper parts of the left end plate 8 and the right end plate 9 and fixedly connected with the two, steel pipe clamping seats 11 arranged between the left end plate 8 and the right end plate 9 on the base 7 and respectively provided with a left hydraulic cylinder 111, a right hydraulic cylinder 112, a bottom supporting seat 113 and a top pressing seat 114, and roller groups arranged on the bottom supporting seat 113 and the top pressing seat 114; the steel pipe lifting mechanisms are symmetrically arranged between any steel pipe clamping seat 11 and the end plate on the corresponding side.
A steel pipe flaring and forming device is arranged between the left end plate 8 and the steel pipe lifting mechanism on the left side, and comprises an installation base 12 which is arranged on the base 7 through a pulley and can move along the base 7, an intermediate frequency heater 13 which is arranged at the front end of the installation base 12 and can also move along the base 7, and a water cooling mechanism thereof, wherein the height of the intermediate frequency heater 13 is adjustable; in addition, a double-shaft synchronous hydraulic cylinder 14 is arranged on the outer side of the left end plate 8, a telescopic shaft of the double-shaft synchronous hydraulic cylinder penetrates through the left end plate 8 and then is fixedly connected with the mounting base 12, and the telescopic shaft can drive the mounting base 12 to move along the base 7; a special steel pipe flaring die 15 and an indentation die 16 are horizontally fixed on the mounting seat 12, and the flaring die 15 and the indentation die 16 are respectively arranged on a turntable 17 of the mounting seat 12 by adopting a rotary wheel type structure; the indentation die 16 comprises a rotatable inner die 18 mounted at the center of the turntable 17 through a bearing, a cylinder mounted on a peripheral support of the inner die 18, and a rotatable outer die 19 mounted at the end of a telescopic shaft of the cylinder.
The inner side of the right end plate 9 is provided with a steel pipe forming device 20, the structure of which is basically consistent with that of an indentation die 16 arranged on the left end plate 8, and the difference is that the action object is the end of a steel pipe without flaring, the integral size of each workpiece is smaller than that of the indentation die 16 at the flaring end of the steel pipe to be processed, and the steel pipe forming device specifically comprises a rotatable inner die 18 fixed at the geometric center of the inner side of the right end plate 9, an air cylinder arranged on a peripheral support of the inner die 18, and a rotatable outer die 19 arranged at the end part of a telescopic shaft of the air cylinder; the inner side of the steel pipe forming device 20 is also provided with a medium frequency heater 13 capable of moving along the base 7 and a water cooling mechanism thereof.
The utility model provides a full-automatic flaring die 15 of steel pipe, this flaring die 15 is coaxial multistage cylinder, and the quantity of different ladder sections sets up according to the diameter of steel pipe and the length that needs the flaring according to the law, and the steel pipe external diameter that this application relates to is injectd between 60-220mm, and the wall thickness is 2.5-4.75mm, and the length that the steel pipe needs the flaring is 200 and adds 320mm, therefore the corresponding restriction of quantity of ladder section is the second grade, and concrete structure includes: a guide head 151, a stabilizing section 152, an expanding section 153, a forming section 154, and a buffering section 155.
The guide head 151 is in a circular truncated cone shape, the inclination angle is 30 degrees, the diameter phi E of the upper end face of the guide head is 50% -80% of the outer diameter phi B of the steel pipe to be flared, the flaring die 15 can be easily guided into the steel pipe to be flared, a quarter circular arc with the radius of 10mm is arranged between any line segment passing through the circle center on the upper end face and the corresponding bus on the side face, the diameter phi C of the lower end face of the guide head 151 is consistent with the diameter of the stabilizing section 152 and is 85% -95% +/-0.5% of the outer diameter phi B of the steel pipe to be flared, and a quarter circular arc with the radius of 20mm is arranged between any bus on the side face of the guide head 151 and the corresponding bus on the side face of the stabilizing section 152; since neither the guide head 151 nor the stabilizing section 152 generates a radial force on the steel pipe, the axial lengths of the two are fixed values.
The length of the expansion section 153 is 25-30mm, the lift angle is 10-13 degrees, the port of the steel pipe is radially expanded, the surface of the lift angle section is nitrided and carburized, the thickness is 0.8-1mm, and the fatigue life, the wear resistance and the corrosion resistance of the steel pipe are improved;
the diameter phi A of the molding section 154 is larger than the outer diameter of the steel pipe, the ratio of the diameter phi A to the outer diameter of the steel pipe is in inverse proportion to the outer diameter phi B of the steel pipe, the smaller the outer diameter phi B of the steel pipe is, the larger the ratio is, otherwise, the smaller the ratio is, within the range defined by the application, the ratio of the diameter phi A of the molding section 154 to the outer diameter phi B of the steel pipe is 1.03-1.11, and the length of the molding section 154 is 110 plus 200 mm; the buffer section 155 is connected with the molding section 154 through a slope with an included angle of 15 degrees, and the width of the slope is 20-30 mm.
The invention relates to a full-automatic flaring production device for a steel pipe, which adopts the following production method:
a. the steel pipe that will treat the flaring is hung and is put to steel pipe and carry on advancing on pipe support 1 of lifting mechanism, and carry out temporary positioning through striker plate 3 that the discharge end set up, later stir the area treatment steel pipe through arc switch-plate 6 on the steel pipe deflector 5 and cross striker plate 3, get into in steel pipe chucking seat 11, the left direction pneumatic cylinder 111 of steel pipe chucking seat 11, right direction pneumatic cylinder 112, bottom sprag seat 113 and top compress tightly seat 114 and move simultaneously, will treat the radial location of steel pipe, prevent that it from taking place to buckle, treat the steel pipe and can follow the axial rotation under bottom sprag seat 113 and the top compresses tightly the roller train centre gripping of seat 114.
b. After the steel pipe to be processed is positioned, the intermediate frequency heater 13 on one side of the left end plate 8 moves outwards and is sleeved on the flaring die 15, and the indentation die 16 of the steel pipe forming device 20 is aligned to the end opening of the steel pipe to be processed.
c. Starting the left intermediate frequency heater 13 to heat the flaring die 15, starting the double-shaft synchronous hydraulic cylinder 14 on the outer side of the left end plate 8 when the flaring die 15 is heated to a preset value, driving the mounting seat 12 to drive the flaring die 15 to move towards the end port of the steel pipe, enabling the flaring die 15 to extend into the steel pipe and flaring the steel pipe, and simultaneously continuously heating the end port of the steel pipe and the flaring die 15 by the intermediate frequency heater 13 to ensure smooth flaring; the other end of the steel pipe is supported by the right mounting seat 12 and the indentation die 16 to assist the flaring process of the left port of the steel pipe.
d. When the displacement value of the flaring die 15 reaches a preset value, the double-shaft synchronous hydraulic cylinder 14 on the outer side of the left end plate 8 stops extending out, then the flaring die 15 is driven to withdraw, the mounting seat 12 and the indentation die 16 on the right side also withdraw from the other end port of the steel pipe, and the flaring treatment of the steel pipe is finished.
e. After the flaring of the left end port of the steel pipe is finished, the flaring die 15 is withdrawn, the intermediate frequency heater 13 moves towards the middle of the steel pipe, enough space is left to ensure that the indentation die 16 arranged on the turntable 17 of the mounting seat 12 rotates to just face the steel pipe end port with the flaring finished, then the double-shaft synchronous hydraulic cylinder 14 on the outer side of the left end plate 8 pushes the mounting seat 12 to move forwards, the inner die 18 of the indentation die 16 is sleeved on the steel pipe end port, the intermediate frequency heater 13 resets to heat the inner die 18 and the steel pipe end port and then moves to the middle position of the steel pipe, and the air cylinder arranged on the peripheral support of the inner die 18 presses the outer die 19; meanwhile, the intermediate frequency heater 13 which is still arranged on one side of the right end plate 9 starts to heat the right end port of the steel pipe and the inner die 18 of the right indentation die 16, the intermediate frequency heater 13 is retreated to the middle part of the steel pipe after the heating is finished, and the air cylinder arranged on the peripheral support of the right inner die 18 presses the outer die 19 to the preset position of the steel pipe end port.
f. The bottom supporting seat 113 and the top pressing seat 114 of the steel pipe clamping seat 11 act simultaneously, the steel pipe is driven by the roller set to rotate at a constant speed along the axial direction, and the indentation molds 16 on the two sides of the steel pipe continuously pressurize the outer mold 19 and match the grooves on the inner mold 18 through the air cylinder in the rotating process of the steel pipe, so that the locking grooves which can be mutually matched and clamped are pressed out at the specific positions of the two ports of the steel pipe through the rollers.
g. Two double-shaft synchronous hydraulic cylinders 14 on the outer sides of the left end plate 8 and the right end plate 9 contract simultaneously to drive the mounting base 12 to withdraw the indentation die 16, the intermediate frequency heater 13 moves towards two sides, the steel pipe clamping base 11 is loosened, the steel pipe lifting mechanism is lifted, so that the steel pipe rolls backwards and is temporarily stored on the pipe outlet support 2.
Has the advantages that:
firstly, the structural design of a flaring end rotating wheel type die is adopted, and a flaring die 15 for flaring the steel pipe and a forming die for pressing a locking groove at the flaring end are simultaneously arranged on the same mounting seat 12, so that flaring processing and locking groove processing of the steel pipe can be realized at one station; meanwhile, at the other end without flaring, the other set of forming die which can not only play a role of stabilizing during flaring of the steel pipe, but also can simultaneously perform locking groove pressing with the flaring end of the steel pipe is arranged, so that the working hours and the occupied stations required by flaring and pressing of the steel pipe are greatly shortened, and the device also has a better promoting effect on miniaturization and integration of the equipment volume.
Secondly, in order to solve the defect that the flaring die 15 in the prior art is easy to cause cracks to be generated when the steel pipe is flared, the flaring die 15 is optimally designed, the guide head 151 playing a role in guiding is arranged to be in a circular truncated cone shape, and meanwhile, the diameter phi E of the upper end surface of the guide head 151 is 50% -80% of the outer diameter phi B of the steel pipe, so that the steel pipe can be accurately matched with the flaring die 15 in the early stage of flaring processing; meanwhile, the diameter phi C of the lower end face is 85% -95% +/-0.5% of the outer diameter phi B of the steel pipe, and the top and the tail of the guide head 151 are set to be arc transition structures with arcs of specific sizes, so that the inner wall of the steel pipe can be prevented from being scratched or scratched even if the inner wall of the steel pipe is in contact with a die after being sleeved in the die, and the phenomenon that the inner wall of the steel pipe is cracked due to the generation of a gravitational release point during flaring is avoided; in addition, the invention also carries out strengthening treatment on the lift angle section which is directly contacted with the inner wall of the steel pipe in the expansion section 153 and carries out radial expansion on the steel pipe, simultaneously reduces the lift angle, prolongs the width of the lift angle section, is beneficial to the gradual progression of the flaring process of the steel pipe and avoids cracks caused by rapid expansion; the forming section 154 is long, which is beneficial to releasing deformation stress of the steel pipe after the flaring is finished, and prevents deformation and breakage in the later period.
Drawings
Fig. 1 is a schematic structural diagram of the full-automatic steel pipe flaring production device.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a left side view of fig. 1.
FIG. 4 is a schematic structural view of the tube-feeding support.
Fig. 5 is a schematic view of the installation position and structure of the steel pipe lifting mechanism and the steel pipe clamping seat.
Fig. 6 is a schematic structural view of the flaring die.
Fig. 7 is a schematic view of the installation position and structure of the flaring die and the creasing die.
Fig. 8 is a schematic structural view of the steel pipe forming apparatus.
Fig. 9 is a schematic structural view of the indentation die.
In the figure: the pipe feeding support 1, the pipe discharging support 2, the material baffle 3, the vertical hydraulic device 4, the steel pipe guide plate 5, the arc-shaped material stirring plate 6, the base 7, the left end plate 8, the right end plate 9, the supporting shaft 10, the steel pipe clamping seat 11, the left hydraulic cylinder 111, the right hydraulic cylinder 112, the bottom supporting seat 113, the top pressing seat 114, the mounting seat 12, the intermediate frequency heater 13, the double-shaft synchronous hydraulic cylinder 14, the flaring die 15, the guide head 151, the stabilizing section 152, the expanding section 153, the forming section 154, the buffering section 155, the indentation die 16, the turntable 17, the inner die 18, the outer die 19 and the steel pipe forming device 20.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Example 1
As shown in fig. 1-9, a full-automatic flaring production device for steel pipes comprises a steel pipe conveying and lifting mechanism and a steel pipe flaring machining mechanism; the steel pipe conveying and lifting mechanism is divided into two parts, namely a pipe inlet support 1 and a pipe outlet support 2 which are respectively arranged at two ends, wherein the pipe inlet support 1 and the pipe outlet support 2 are both of a structure that a feeding end is higher than a discharging end, and a material baffle plate 3 is arranged at the discharging end; two ends of the joint of the pipe inlet support 1 and the pipe outlet support 2 are respectively provided with a steel pipe lifting mechanism, and the steel pipe lifting mechanism specifically comprises a vertical hydraulic device 4 and a steel pipe guide plate 5 fixed at the end part of a hydraulic rod; the steel pipe guide plate 5 also adopts a structure from high to low from the inlet end to the outlet end, and the middle part and the inlet end are respectively provided with an arc-shaped material shifting plate 6 for shifting the steel pipes which are not flared and the steel pipes which are flared to be conveyed backwards.
The steel pipe flaring processing agency sets up in advancing a tub support 1 and exit tube support 2 handing-over department, and the mechanism coincidence is lifted with the steel pipe in horizontal, functional mutual noninterference, and its concrete structure includes: the device comprises a base 7 fixed on the bottom surface, a left end plate 8 and a right end plate 9 arranged at two ends of the base 7, a support shaft 10 arranged at the upper parts of the left end plate 8 and the right end plate 9 and fixedly connected with the two, steel pipe clamping seats 11 arranged between the left end plate 8 and the right end plate 9 on the base 7 and respectively provided with a left hydraulic cylinder 111, a right hydraulic cylinder 112, a bottom supporting seat 113 and a top pressing seat 114, and roller groups arranged on the bottom supporting seat 113 and the top pressing seat 114; the steel pipe lifting mechanisms are symmetrically arranged between any steel pipe clamping seat 11 and the end plate on the corresponding side.
A steel pipe flaring and forming device is arranged between the left end plate 8 and the steel pipe lifting mechanism on the left side, and comprises an installation base 12 which is arranged on the base 7 through a pulley and can move along the base 7, an intermediate frequency heater 13 which is arranged at the front end of the installation base 12 and can also move along the base 7, and a water cooling mechanism thereof, wherein the height of the intermediate frequency heater 13 is adjustable; in addition, a double-shaft synchronous hydraulic cylinder 14 is arranged on the outer side of the left end plate 8, a telescopic shaft of the double-shaft synchronous hydraulic cylinder penetrates through the left end plate 8 and then is fixedly connected with the mounting base 12, and the telescopic shaft can drive the mounting base 12 to move along the base 7; a steel pipe flaring die 15 and an indentation die 16 are horizontally fixed on the mounting seat 12, and the flaring die 15 and the indentation die 16 are respectively arranged on a turntable 17 of the mounting seat 12 by adopting a rotary wheel type structure; the indentation die 16 comprises a rotatable inner die 18 mounted at the center of the turntable 17 through a bearing, a cylinder mounted on a peripheral support of the inner die 18, and a rotatable outer die 19 mounted at the end of a telescopic shaft of the cylinder.
The inner side of the right end plate 9 is provided with a steel pipe forming device 20, the structure of which is basically consistent with that of an indentation die 16 arranged on the left end plate 8, and the difference is that the action object is the end of a steel pipe without flaring, the integral size of each workpiece is smaller than that of the indentation die 16 at the flaring end of the steel pipe to be processed, and the steel pipe forming device specifically comprises a rotatable inner die 18 fixed at the geometric center of the inner side of the right end plate 9, an air cylinder arranged on a peripheral support of the inner die 18, and a rotatable outer die 19 arranged at the end part of a telescopic shaft of the air cylinder; the inner side of the steel pipe forming device 20 is also provided with a medium frequency heater 13 capable of moving along the base 7 and a water cooling mechanism thereof.
The utility model provides a full-automatic flaring die 15 of steel pipe, this flaring die 15 are coaxial second order cylinder, and the steel pipe external diameter phi B that relates is 60mm, and the wall thickness is 2.5-3.5mm, and the length that the steel pipe needs the flaring is 200mm, and concrete structure includes: a guide head 151, a stabilizing section 152, an expanding section 153, a forming section 154, and a buffering section 155.
The guiding head 151 is in a circular truncated cone shape, the inclination angle is 30 degrees, the diameter phi E of the upper end face of the guiding head is 30mm, the flaring die 15 can be easily guided into a steel pipe to be flared, a quarter circular arc with the radius of 10mm is arranged between any line segment passing through the center of a circle on the upper end face and a corresponding bus on the side face, the diameter phi C of the lower end face of the guiding head 151 is 52mm and is consistent with the diameter of the stabilizing section 152, and a quarter circular arc with the radius of 20mm is arranged between any bus on the side face of the guiding head 151 and the corresponding bus on the side face of the stabilizing section 152; neither the guide head 151 nor the stabilizing section 152 generates radial acting force on the steel pipe, the length of the guide head 151 is 50mm, and the length of the stabilizing section 152 is 80 mm.
The length of the expansion section 153 is 25mm, the lift angle is 10 degrees, the port of the steel pipe is radially expanded, the surface of the lift angle section is nitrided and carburized, the thickness is 0.8-1mm, and the fatigue life, the wear resistance and the corrosion resistance of the steel pipe are improved; the diameter φ A of the shaping segment 154 is 66.5mm, and the length of the shaping segment 154 is 115 mm; the buffer section 155 is connected with the forming section 154 through a slope with an included angle of 15 degrees, and the width of the slope is 20 mm.
Example 2
As shown in fig. 1 to 9, in the full-automatic flaring die 15 for a steel pipe according to the present embodiment, the flaring die 15 is a coaxial second-order cylinder, the outer diameter Φ B of the related steel pipe is 114mm, the wall thickness is 2.0 to 3.25mm, the length of the steel pipe to be flared is 250mm, and the specific structure includes: a guide head 151, a stabilizing section 152, an expanding section 153, a forming section 154, and a buffering section 155.
The guiding head 151 is in a circular truncated cone shape, the inclination angle is 30 degrees, the diameter phi E of the upper end face of the guiding head is 65mm, the flaring die 15 can be easily guided into a steel pipe to be flared, a quarter circular arc with the radius of 10mm is arranged between any line segment passing through the center of a circle on the upper end face and a corresponding bus on the side face, the diameter phi C of the lower end face of the guiding head 151 is 106mm and is consistent with the diameter of the stabilizing section 152, and a quarter circular arc with the radius of 20mm is arranged between any bus on the side face of the guiding head 151 and the corresponding bus on the side face of the stabilizing section 152; neither the guide head 151 nor the stabilizing section 152 generates radial acting force on the steel pipe, the length of the guide head 151 is 50mm, and the length of the stabilizing section 152 is 80 mm.
The length of the expansion section 153 is 30mm, the lift angle is 10 degrees, the port of the steel pipe is radially expanded, the surface of the lift angle section is nitrided and carburized, the thickness is 0.8-1mm, and the fatigue life, the wear resistance and the corrosion resistance of the steel pipe are improved; the diameter φ A of the shaping segment 154 is 120.5mm, and the length of the shaping segment 154 is 160 mm; the buffer section 155 is connected with the forming section 154 through a slope with an included angle of 15 degrees, and the width of the slope is 20 mm.
Example 3
As shown in fig. 1 to 9, in the full-automatic flaring die 15 for a steel pipe according to the present embodiment, the flaring die 15 is a coaxial second-order cylinder, the outer diameter Φ B of the related steel pipe is 220mm, the wall thickness is 3.25 to 4.75mm, the length of the steel pipe to be flared is 320mm, and the specific structure includes: a guide head 151, a stabilizing section 152, an expanding section 153, a forming section 154, and a buffering section 155.
The guiding head 151 is in a circular truncated cone shape, the inclination angle is 30 degrees, the diameter phi E of the upper end face of the guiding head is 170mm, the flaring die 15 can be easily guided into a steel pipe to be flared, a quarter circular arc with the radius of 10mm is arranged between any line segment passing through the center of a circle on the upper end face and a corresponding bus on the side face, the diameter phi C of the lower end face of the guiding head 151 is 208mm and is consistent with the diameter of the stabilizing section 152, and a quarter circular arc with the radius of 20mm is arranged between any bus on the side face of the guiding head 151 and the corresponding bus on the side face of the stabilizing section 152; neither the guide head 151 nor the stabilizing section 152 generates radial acting force on the steel pipe, the length of the guide head 151 is 50mm, and the length of the stabilizing section 152 is 80 mm.
The length of the expansion section 153 is 30mm, the lift angle is 13 degrees, the port of the steel pipe is radially expanded, the surface of the lift angle section is nitrided and carburized, the thickness is 0.8-1mm, and the fatigue life, the wear resistance and the corrosion resistance of the steel pipe are improved; the diameter φ A of the shaping segment 154 is 227mm, and the length of the shaping segment 154 is 200 mm; the buffer section 155 is connected with the forming section 154 through a slope with an included angle of 15 degrees, and the width of the slope is 20 mm.
Example 4
As shown in fig. 1-9, a full-automatic flaring production device for steel pipes adopts the following production method:
a. the steel pipe that will treat the flaring is hung and is put to steel pipe and carry on advancing on pipe support 1 of lifting mechanism, and carry out temporary positioning through striker plate 3 that the discharge end set up, later stir the area treatment steel pipe through arc switch-plate 6 on the steel pipe deflector 5 and cross striker plate 3, get into in steel pipe chucking seat 11, the left direction pneumatic cylinder 111 of steel pipe chucking seat 11, right direction pneumatic cylinder 112, bottom sprag seat 113 and top compress tightly seat 114 and move simultaneously, will treat the radial location of steel pipe, prevent that it from taking place to buckle, treat the steel pipe and can follow the axial rotation under bottom sprag seat 113 and the top compresses tightly the roller train centre gripping of seat 114.
b. After the steel pipe to be processed is positioned, the intermediate frequency heater 13 on one side of the left end plate 8 moves outwards and is sleeved on the flaring die 15, and the indentation die 16 of the steel pipe forming device 20 is aligned to the end opening of the steel pipe to be processed.
c. Starting the left intermediate frequency heater 13 to heat the flaring die 15, starting the double-shaft synchronous hydraulic cylinder 14 on the outer side of the left end plate 8 when the flaring die 15 is heated to a preset value, driving the mounting seat 12 to drive the flaring die 15 to move towards the end port of the steel pipe, enabling the flaring die 15 to extend into the steel pipe and flaring the steel pipe, and simultaneously continuously heating the end port of the steel pipe and the flaring die 15 by the intermediate frequency heater 13 to ensure smooth flaring; the other end of the steel pipe is supported by the right mounting seat 12 and the indentation die 16 to assist the flaring process of the left port of the steel pipe.
d. When the displacement value of the flaring die 15 reaches a preset value, the double-shaft synchronous hydraulic cylinder 14 on the outer side of the left end plate 8 stops extending out, then the flaring die 15 is driven to withdraw, the mounting seat 12 and the indentation die 16 on the right side also withdraw from the other end port of the steel pipe, and the flaring treatment of the steel pipe is finished.
e. After the flaring of the left end port of the steel pipe is finished, the flaring die 15 is withdrawn, the intermediate frequency heater 13 moves towards the middle of the steel pipe, enough space is left to ensure that the indentation die 16 arranged on the turntable 17 of the mounting seat 12 rotates to just face the steel pipe end port with the flaring finished, then the double-shaft synchronous hydraulic cylinder 14 on the outer side of the left end plate 8 pushes the mounting seat 12 to move forwards, the inner die 18 of the indentation die 16 is sleeved on the steel pipe end port, the intermediate frequency heater 13 resets to heat the inner die 18 and the steel pipe end port and then moves to the middle position of the steel pipe, and the air cylinder arranged on the peripheral support of the inner die 18 presses the outer die 19 down to the preset position of the steel pipe end port; meanwhile, the intermediate frequency heater 13 which is still arranged on one side of the right end plate 9 starts to heat the right end port of the steel pipe and the inner die 18 of the right indentation die 16, the intermediate frequency heater 13 is retreated to the middle part of the steel pipe after the heating is finished, and the air cylinder arranged on the peripheral support of the right inner die 18 presses the outer die 19 to the preset position of the steel pipe end port.
f. The bottom supporting seat 113 and the top pressing seat 114 of the steel pipe clamping seat 11 act simultaneously, the steel pipe is driven by the roller set to rotate at a constant speed along the axial direction, and the indentation molds 16 on the two sides of the steel pipe continuously pressurize the outer mold 19 and match the grooves on the inner mold 18 through the air cylinder in the rotating process of the steel pipe, so that the locking grooves which can be mutually matched and clamped are pressed out at the specific positions of the two ports of the steel pipe through the rollers.
g. Two double-shaft synchronous hydraulic cylinders 14 on the outer sides of the left end plate 8 and the right end plate 9 contract simultaneously to drive the mounting base 12 to withdraw the indentation die 16, the intermediate frequency heater 13 moves towards two sides, the steel pipe clamping base 11 is loosened, the steel pipe lifting mechanism is lifted, so that the steel pipe rolls backwards and is temporarily stored on the pipe outlet support 2.
Claims (3)
1. The utility model provides a full-automatic flaring apparatus for producing of steel pipe which characterized in that: the device comprises a steel pipe conveying and lifting mechanism and a steel pipe flaring machining mechanism;
the steel pipe conveying and lifting mechanism is divided into two parts, namely a pipe inlet support (1) and a pipe outlet support (2) which are respectively arranged at two ends, wherein the pipe inlet support (1) and the pipe outlet support (2) are respectively arranged into a structure with a feeding end higher than a discharging end, and the discharging end is respectively provided with a material baffle plate (3);
two ends of the joint of the pipe inlet support (1) and the pipe outlet support (2) are respectively provided with a steel pipe lifting mechanism, and the steel pipe lifting mechanism specifically comprises a vertical hydraulic device (4) and a steel pipe guide plate (5) fixed at the end part of a hydraulic rod; the steel pipe guide plate (5) also adopts a structure from high to low from the inlet end to the outlet end, and the middle part and the inlet end are respectively provided with an arc-shaped material shifting plate (6) for shifting the steel pipe which is not flared and the steel pipe which is flared to be conveyed backwards;
the steel pipe flaring processing agency sets up the inside and outside both sides of advancing pipe support (1) and exit tube support (2) handing-over department, and its concrete structure includes: the device comprises a base (7) fixed on the ground, a left end plate (8) and a right end plate (9) arranged at two ends of the base (7), supporting shafts (10) arranged at the upper parts of the left end plate (8) and the right end plate (9) and fixedly connected with the left end plate and the right end plate respectively, steel pipe clamping seats (11) respectively arranged between the left end plate (8) and the right end plate (9) on the base (7), a left hydraulic cylinder (111), a right hydraulic cylinder (112), a bottom supporting seat (113) and a top clamping seat (114) respectively arranged on the steel pipe clamping seats, and roller sets arranged on the bottom supporting seat (113) and the top clamping seat (114); the steel pipe lifting mechanisms are symmetrically arranged between any steel pipe clamping seat (11) and the end plate on the corresponding side;
a steel pipe flaring and forming device is arranged between the left end plate (8) and the steel pipe lifting mechanism on the left side, and comprises an installation base (12) which is arranged on the base (7) through a pulley and can move along the base (7), an intermediate frequency heater (13) which is arranged at the front end of the installation base (12) and can also move along the base (7) and a water cooling mechanism thereof, wherein the height of the intermediate frequency heater (13) is adjustable; in addition, a double-shaft synchronous hydraulic cylinder (14) is arranged on the outer side of the left end plate (8), a telescopic shaft of the double-shaft synchronous hydraulic cylinder penetrates through the left end plate (8) and then is fixedly connected with the mounting base (12), and the telescopic shaft can drive the mounting base (12) to move along the base (7); a special steel pipe flaring die (15) and an indentation die (16) are horizontally fixed on the mounting seat (12), and the flaring die (15) and the indentation die (16) are respectively arranged on a turntable (17) of the mounting seat (12) by adopting a rotary wheel type structure; the indentation die (16) comprises a rotatable inner die (18) arranged at the center of the turntable (17) through a bearing, a cylinder arranged on a peripheral support of the inner die (18), and a rotatable outer die (19) arranged at the end part of a telescopic shaft of the cylinder;
the steel pipe forming device (20) is arranged on the inner side of the right end plate (9), the structure of the steel pipe forming device is basically consistent with that of an indentation die (16) arranged on the left end plate (8), the difference is that the action object is the end of a steel pipe without flaring, the integral size of each workpiece is smaller than that of the indentation die (16) at the flaring end of the steel pipe to be processed, and the steel pipe forming device specifically comprises a rotatable inner die (18) fixed at the geometric center of the inner side of the right end plate (9), an air cylinder arranged on a peripheral support of the inner die (18), and a rotatable outer die (19) arranged at the end part of an expansion shaft of the air cylinder; the inner side of the steel pipe forming device (20) is also provided with a medium frequency heater (13) which can move along the base (7) and a water cooling mechanism thereof.
2. The utility model provides a full-automatic flaring die (15) of steel pipe, its characterized in that, this flaring die (15) are coaxial multistage cylinder, and the quantity of different ladder sections sets up according to the rule according to the diameter of steel pipe and the length that needs the flaring thereof, and the steel pipe external diameter that this application relates to is injectd between 60-220mm, and the wall thickness is 2.5-4.75mm, and the length that the steel pipe needs the flaring is 200 and 320mm, and therefore the corresponding restriction of quantity of ladder section is the second grade, and concrete structure includes: a guide head (151), a stabilizing section (152), an expanding section (153), a forming section (154) and a buffering section (155);
the flaring die is characterized in that the guide head (151) is in a circular truncated cone shape, the inclination angle is 30 degrees, the diameter phi E of the upper end face of the guide head is 50% -80% of the outer diameter phi B of a steel pipe to be flared, the flaring die (15) can be easily guided into the steel pipe to be flared, a quarter circular arc with the radius of 10mm is arranged between any line segment passing through the center of a circle on the upper end face and a corresponding bus on the side face, the diameter phi C of the lower end face of the guide head (151) is consistent with the diameter of the stabilizing section (152) and is 85% -95% +/-0.5% of the outer diameter phi B of the steel pipe to be flared, and a quarter circular arc with the radius of 20mm is arranged between any bus on the side face of the guide head (151) and the corresponding bus on the side face of the stabilizing section (152); the guide head (151) and the stable section (152) do not generate radial acting force on the steel pipe, so the axial lengths of the guide head and the stable section are fixed values;
the length of the expansion section (153) is 25-30mm, the lift angle is 10-13 degrees, the port of the steel pipe is radially expanded, the surface of the lift angle section is nitrided and carburized, and the thickness is 0.8-1 mm;
the diameter phi A of the molding section (154) is larger than the outer diameter of the steel pipe, the ratio of the diameter phi A to the outer diameter of the steel pipe is in inverse proportion to the outer diameter phi B of the steel pipe, the smaller the outer diameter phi B of the steel pipe is, the larger the ratio is, otherwise, the smaller the ratio is, in the range defined by the application, the ratio of the diameter phi A of the molding section (154) to the outer diameter phi B of the steel pipe is 1.03-1.11, and the length of the molding section (154) is 110 plus 200 mm; the buffer section (155) is connected with the molding section (154) through a slope with an included angle of 15 degrees, and the width of the slope is 20-30 mm.
3. The production method of the full-automatic flaring production device for the steel pipe is characterized by comprising the following steps of:
a. the method comprises the steps that a steel pipe to be flared is lifted to a pipe feeding support (1) of a steel pipe conveying lifting mechanism, temporary positioning is carried out through a material baffle plate (3) arranged at a discharge end, then the steel pipe with treatment is stirred to cross the material baffle plate (3) through an arc-shaped material stirring plate (6) on a steel pipe guide plate (5) and enters a steel pipe clamping seat (11), a left hydraulic cylinder (111), a right hydraulic cylinder (112), a bottom supporting seat (113) and a top pressing seat (114) of the steel pipe clamping seat (11) act simultaneously, the steel pipe to be treated is positioned in the radial direction and prevented from being bent, and the steel pipe to be treated can rotate axially under the clamping of roller groups of the bottom supporting seat (113) and the top pressing seat (114);
b. after the steel pipe to be processed is positioned, the intermediate frequency heater (13) on one side of the left end plate (8) moves outwards and is sleeved on the flaring die (15), and an indentation die (16) of the steel pipe forming device (20) is aligned to the port of the steel pipe to be processed;
c. starting a left intermediate frequency heater (13) to heat a flaring die (15), starting a double-shaft synchronous hydraulic cylinder (14) on the outer side of a left end plate (8) when the flaring die (15) is heated to a preset value, driving a mounting seat (12) to drive the flaring die (15) to move towards a steel pipe port, enabling the flaring die (15) to extend into the steel pipe and flaring the steel pipe, and continuously heating the steel pipe port and the flaring die (15) by the intermediate frequency heater (13) to ensure smooth flaring; the other end of the steel pipe is propped against by the right mounting seat (12) and the indentation die (16) to assist in flaring processing of the left port of the steel pipe;
d. when the displacement value of the flaring die (15) reaches a preset value, the double-shaft synchronous hydraulic cylinder (14) on the outer side of the left end plate (8) stops extending out, then the flaring die (15) is driven to withdraw, the mounting seat (12) and the indentation die (16) on the right side also withdraw from the other end port of the steel pipe, and the flaring processing of the steel pipe is finished;
e. after the flaring of the port on the left side of the steel pipe is finished, the flaring die (15) is withdrawn, the intermediate frequency heater (13) moves towards the middle of the steel pipe, enough space is given out to ensure that an indentation die (16) arranged on a turntable (17) of the mounting seat (12) rotates to just face the port of the steel pipe with the flaring finished, then a double-shaft synchronous hydraulic cylinder (14) on the outer side of the left end plate (8) pushes the mounting seat (12) to move forwards, an inner die (18) of the indentation die (16) is sleeved on the port of the steel pipe, the intermediate frequency heater (13) resets to heat the inner die (18) and the port of the steel pipe and then moves to the middle position of the steel pipe, and a cylinder arranged on a peripheral support of the inner die (18) presses an outer die (19) to a preset position of the port of the steel pipe; meanwhile, the intermediate frequency heater (13) which is kept still at one side of the right end plate (9) also starts to heat the inner die (18) of the right port of the steel pipe and the right indentation die (16), the intermediate frequency heater (13) retreats to the middle part of the steel pipe after the heating is finished, and an air cylinder arranged on a peripheral support of the right inner die (18) presses an outer die (19) down to a preset position of the port of the steel pipe;
f. a bottom supporting seat (113) and a top pressing seat (114) of the steel pipe clamping seat (11) act simultaneously, the steel pipe is driven by a roller set to rotate at a constant speed along the axial direction, and the indentation molds (16) on the two sides of the steel pipe continuously pressurize the outer mold (19) through the air cylinder and are matched with the grooves on the inner mold (18) in the rotating process of the steel pipe, so that locking grooves capable of being mutually matched and clamped are formed in the specific positions of the two ports of the steel pipe in a rolling mode;
g. two double-shaft synchronous hydraulic cylinders (14) on the outer sides of the left end plate (8) and the right end plate (9) contract simultaneously to drive the mounting seat (12) to withdraw the indentation die (16), the intermediate frequency heater (13) also moves towards two sides, the steel pipe clamping seat (11) is loosened, the steel pipe lifting mechanism is lifted, the steel pipe rolls backwards and is temporarily stored on the pipe outlet support (2).
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| CN202110568921.8A CN113210512B (en) | 2021-05-25 | 2021-05-25 | Production method of full-automatic flaring production device for steel pipe |
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| CN202110568921.8A CN113210512B (en) | 2021-05-25 | 2021-05-25 | Production method of full-automatic flaring production device for steel pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115069912A (en) * | 2022-07-20 | 2022-09-20 | 江苏克莱德激光技术有限责任公司 | Pipeline expanding device |
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