CN110369572B - Bending device and bending process for arc-shaped pipe body - Google Patents
Bending device and bending process for arc-shaped pipe body Download PDFInfo
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- CN110369572B CN110369572B CN201910737823.5A CN201910737823A CN110369572B CN 110369572 B CN110369572 B CN 110369572B CN 201910737823 A CN201910737823 A CN 201910737823A CN 110369572 B CN110369572 B CN 110369572B
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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
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/28—Associations of cutting devices therewith
- B21D43/285—Devices for handling elongated articles, e.g. bars, tubes or profiles
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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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
- B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
- B21D7/025—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member and pulling or pushing the ends of the work
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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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/16—Auxiliary equipment, e.g. for heating or cooling of bends
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Catching Or Destruction (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses an arc-shaped pipe bending device which comprises an equipment base, wherein a horizontal pipe bending guide platform is arranged above the equipment base through a support column; the pipe bending guide platform is formed by horizontally and integrally connecting a right-angle fan-shaped platform and a rectangular platform, and the arc-shaped edge of the right-angle fan-shaped platform is in tangential transition with one rectangular edge of the rectangular platform; the pipe bending machine is simple in structure, the outer surface and the inner surface of the bent pipe can be shaped in time after the straight pipe is bent, and the roundness of the bent pipe and the flatness of the pipe wall are improved.
Description
Technical Field
The invention belongs to the field of pipe body bending.
Background
After the arc-shaped pipe is bent, due to certain deformation, the outer surface and the inner surface of the pipe body can have the phenomena of local depression, protrusion, unevenness and low roundness, so that the precision and the quality of the bent pipe body are influenced; there is therefore a need for a mechanism to correct the shaping in time during the bending process.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides an arc-shaped pipe bending device and a bending process thereof.
The technical scheme is as follows: in order to achieve the purpose, the arc-shaped pipe bending device comprises an equipment base, wherein a horizontal pipe bending guide platform is arranged above the equipment base through a support column;
the pipe bending guide platform is formed by horizontally and integrally connecting a right-angle fan-shaped platform and a rectangular platform, and the arc-shaped edge of the right-angle fan-shaped platform is in tangential transition with one rectangular edge of the rectangular platform;
a horizontal pipe body bending guide groove is formed in the arc-shaped side face where the arc-shaped edge of the right-angle fan-shaped platform is located, and extends along the bending radian of the arc-shaped edge; a horizontal linear groove is formed in the side face of the rectangular platform where the rectangular edge is located; the clockwise end of the pipe bending guide groove is communicated with one end of the linear groove; the cross section profiles of the linear groove and the pipe bending guide groove are semicircular with the same radius; the inner diameters of the straight line groove and the pipe body bending guide groove are the same as the inner diameter of the straight pipe to be bent;
the two sides of the linear groove are symmetrical linear groove edges, the two sides of the pipe body bending guide groove are symmetrical arc groove edges, and the clockwise end of each arc groove edge is tangent to the corresponding linear groove edge.
Further, a guide wheel bracket is fixedly arranged on the rectangular platform, and a straight pipe guide wheel is rotatably arranged at the tail end of the guide wheel bracket through a bearing; the straight pipe guide wheel is characterized in that the middle part of the wheel surface of the straight pipe guide wheel is provided with an annular straight pipe guide groove, two sides of the straight pipe guide groove are provided with annular groove edges, and the cross section profile of the straight pipe guide groove is semicircular; the two annular groove edges are respectively connected with the two linear groove edges in a sliding tangent mode; a circular first pipe body constraint hole is formed at the intersection position of the straight pipe guide groove and the straight line groove;
a vertical roller wheel driving steering engine is fixedly mounted on the lower side of the circle center of the right-angle fan-shaped platform, and an output shaft of the roller wheel driving steering engine and the fan-shaped circle center of the right-angle fan-shaped platform are coaxially arranged; the tail end of the output shaft of the steering engine is driven by the roller wheel to be fixedly connected with a rocker arm, the tail end of the rocker arm is fixedly connected with a vertical rolling wheel shaft, and the upper end of the rolling wheel shaft is rotatably connected with a pipe body rolling wheel through a bearing;
the middle part of the wheel face of the tube body rolling wheel is provided with an annular rolling groove, two sides of the rolling groove are provided with annular rolling edges, and the cross section profile of the rolling groove is semicircular; the two annular rolling edges are respectively in rolling connection with the two arc-shaped groove edges; and a circular second pipe body constraint hole is formed at the crossed position of the rolling groove and the pipe body bending guide groove.
Furthermore, a vertical pipe bending guide ball driving steering engine is fixedly mounted on the upper side of the circle center of the right-angle fan-shaped platform, and a steering engine output shaft of the pipe bending guide ball driving steering engine and the fan-shaped circle center of the right-angle fan-shaped platform are coaxially arranged; the upper end of an output shaft of a steering engine of the steering engine driven by the pipe body bending guide ball is connected with a rotary beam, one side of the rotary beam is connected with a plurality of rotating arms arranged in parallel, the tail ends of the plurality of rotating arms are connected with an upper support together, and a lower support is fixedly connected below the upper support through a plurality of linkage columns; one end of the lower support is connected with an arc arm, and the circle center of the arc arm is superposed with the circle center of the right-angle fan-shaped platform; the clockwise end of the arc arm is fixedly connected with a hard guide ball with a bent pipe body, and the counterclockwise end of the arc arm is fixedly connected with one end of the lower support through a connecting piece; the spherical center of the pipe body bending hard guide ball is located on the arc center line of the pipe body bending guide groove, and the diameter of the pipe body bending hard guide ball is the same as the inner diameter of the arc pipe bent in the pipe body bending guide groove.
Furthermore, a cutting knife seam is vertically arranged at the transition connection position of the arc-shaped edge of the right-angle fan-shaped platform and one rectangular edge of the rectangular platform;
a horizontal guide rail is arranged on the equipment base and is vertical to the extending direction of the linear groove; the device comprises a guide rail, a base, a linear motor, a linear push rod and a guide rail, wherein the guide rail is provided with a sliding block in a sliding manner, the base is also provided with the linear motor, and the linear push rod of the linear motor is parallel to the extension direction of the guide rail; the tail end of the linear push rod is connected with the sliding block in a linkage manner through a linkage piece; a cutting machine support is fixedly arranged on the sliding block, a cutting machine is arranged at the top end of the cutting machine support, and a rotary cutting blade of the cutting machine corresponds to the cutting knife seam; the thickness of the gap of the cutting knife seam is larger than that of the cutting blade.
Further, the bending process of the bending device for the arc-shaped pipe body comprises the following steps:
step one, a pushing device pushes one end of a straight pipe to be bent coaxially into a straight groove, the straight pipe to be bent coaxially in the straight groove is enabled to movably penetrate through a first pipe body constraint hole, and finally the tail end of the straight pipe to be bent is just inserted into a second pipe body constraint hole coaxially, so that the straight pipe to be bent pushed into the straight groove is in a constrained state in the radial direction, but the axial direction of the straight pipe to be bent is still in a free state;
step two, starting the pipe body bending guide ball to drive the steering engine, and controlling the pipe body bending hard guide ball to clockwise move to the clockwise end of the pipe body bending guide groove along the central line of the pipe body bending guide groove, wherein the pipe body bending hard guide ball is just sleeved into the pipe orifice at the tail end of the straight pipe to be bent;
step three, the propulsion device continues to slowly propel the straight pipe to be bent along the axis, the tail end of the straight pipe to be bent gradually passes through the second pipe body restriction hole, meanwhile, the pipe body bending guide ball is controlled to drive the steering engine, so that the pipe body bending hard guide ball slowly moves along the center line of the pipe body bending guide groove in the anticlockwise direction,
the hard guide ball for bending the pipe body is always positioned in the pipe orifice at the tail end of the straight pipe to be bent;
the straight pipe to be bent gradually passing through the second pipe body constraint hole is bent anticlockwise into a bent pipe section under the anticlockwise guidance of the pipe body bending hard guide ball, the straight pipe to be bent is continuously and slowly pushed along the axis along the pushing device, the bent pipe section is slowly fed anticlockwise along the pipe body bending guide groove until the tail end of the bent pipe section reaches the counterclockwise end of the pipe body bending guide groove, and the bent pipe section is a complete circular pipe bent by 90 degrees at the moment; although the complete arc tube is integrally formed in the guiding and bending process of bending the hard guiding ball by the tube body in the step, the outer wall and the inner wall of the arc tube have the phenomena of local depression, protruding unevenness and low roundness;
controlling the pipe body bending guide ball to drive the steering engine, enabling the pipe body bending hard guide ball to slowly move clockwise along the central line of the pipe body bending guide groove to the clockwise end of the pipe body bending guide groove, further enabling the pipe body bending hard guide ball to walk through an inner arc channel of the whole arc pipe, and enabling the pipe body bending hard guide ball to play a role in shaping and leveling the inner wall of the arc pipe in the process of slowly displacing clockwise along the inner arc channel of the arc pipe;
step five, starting the roller wheel to drive the steering engine, and driving the pipe body rolling wheel to roll anticlockwise along the arc-shaped groove edge by the roller wheel driving steering engine through the rocker arm until the pipe body rolling wheel rolls to the counterclockwise end of the pipe body bending guide groove; in the process, due to the rolling of the pipe body rolling wheel, the second pipe body restriction hole moves to the counterclockwise end of the pipe body bending guide groove along the pipe body bending guide groove in a counterclockwise manner; the second pipe body restriction hole is a rigid hole which is sleeved on the arc pipe all the time, so that the second pipe body restriction hole plays a role in shaping and flattening the outer wall of the arc pipe in the process of moving the counter-clockwise needle of the pipe body bending guide groove along the pipe body bending guide groove to the counter-clockwise needle end of the pipe body bending guide groove;
controlling the pipe bending guide ball to drive the steering engine, and enabling the pipe bending hard guide ball to slowly move anticlockwise along the central line of the pipe bending guide groove until the pipe bending hard guide ball avoids the feeding path of the rotary cutting blade; then starting the cutting machine, and starting the linear motor to feed the cutting machine towards the cutting knife seam direction until a rotary cutting blade on the cutting machine feeds to the connecting position of the cut circular arc pipe and the straight pipe to be bent; until the circular arc pipe is separated from the straight pipe to be bent; thereby forming an independent arc pipe finished product.
Has the advantages that: the invention has simple structure, can shape the outer surface and the inner surface of the bent pipe in time after the straight pipe is bent, and improves the roundness of the bent pipe and the flatness of the pipe wall.
Drawings
FIG. 1 is a first perspective view of the apparatus (the state in which step three is completed);
FIG. 2 is a second perspective view of the device;
FIG. 3 is a third perspective view of the apparatus;
FIG. 4 is a fourth perspective view of the apparatus (during step three);
FIG. 5 is a first plan view of the apparatus (state where step three is completed);
FIG. 6 is a second top plan view of the apparatus;
FIG. 7 is a side view of the device;
FIG. 8 is a schematic view of the apparatus at the end of step two of the bending process;
FIG. 9 is a schematic view of the apparatus during step three of the bending process;
FIG. 10 is a schematic view of the end of step three of the bending process of the apparatus;
FIG. 11 is a schematic view of the apparatus during step four of the bending process;
FIG. 12 is a schematic view of the apparatus at the end of step four of the bending process;
FIG. 13 is a schematic view of the apparatus during step five of the bending process.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
An arc tube bending device as shown in fig. 1 to 13 comprises an apparatus base 26, wherein a horizontal tube bending guiding platform 10 is arranged above the apparatus base 26 through a supporting column 60;
the pipe bending guide platform 10 is formed by horizontally and integrally connecting a right-angle fan-shaped platform 10.1 and a rectangular platform 10.2, and an arc-shaped edge 30 of the right-angle fan-shaped platform 10.1 is in tangential transition with a rectangular edge 31 of the rectangular platform 10.2;
a horizontal pipe bending guide groove 33 is arranged on the arc-shaped side surface where the arc-shaped edge 30 of the right-angle fan-shaped platform 10.1 is located, and the pipe bending guide groove 33 extends along the bending radian of the arc-shaped edge 30; a horizontal linear groove 39 is arranged on the side surface of the rectangular side 31 of the rectangular platform 10.2; the clockwise end of the pipe bending guide groove 33 is communicated with one end of the linear groove 39; the cross-sectional profiles of the linear groove 39 and the pipe bending guide groove 33 are semicircular with the same radius; the inner diameters of the straight line groove 39 and the pipe bending guide groove 33 are the same as the inner diameter of the straight pipe 1 to be bent;
two sides of the linear groove 39 are symmetrical linear groove edges 38, two sides of the pipe bending guiding groove 33 are symmetrical arc groove edges 35, and the clockwise end of each arc groove edge 35 is tangent to the corresponding linear groove edge 38.
A guide wheel bracket 18 is fixedly arranged on the rectangular platform 10.2, and a straight pipe guide wheel 2 is rotatably arranged at the tail end of the guide wheel bracket 18 through a bearing; the middle part of the wheel surface of the straight pipe guide wheel 2 is provided with an annular straight pipe guide groove 37, two sides of the straight pipe guide groove 37 are provided with annular groove edges 36, and the cross section profile of the straight pipe guide groove 37 is semicircular; the two annular groove edges 36 are respectively connected with the two linear groove edges 38 in a sliding tangent mode; a circular first pipe body restriction hole 81 is formed at the intersection position of the straight pipe guide groove 37 and the straight line groove 39;
a vertical roller wheel driving steering engine 17 is fixedly mounted on the lower side of the circle center of the right-angle fan-shaped platform 10.1, and an output shaft 07 of the roller wheel driving steering engine 17 and the fan-shaped circle center of the right-angle fan-shaped platform 10.1 are coaxially arranged; the tail end of the output shaft 07 of the steering engine driven by the roller wheel is fixedly connected with a rocker arm 20, the tail end of the rocker arm 20 is fixedly connected with a vertical rolling wheel shaft 09, and the upper end of the rolling wheel shaft 09 is rotatably connected with a pipe body rolling wheel 21 through a bearing;
the middle height of the wheel face of the pipe body rolling wheel 21 is provided with an annular rolling groove 32, two sides of the rolling groove 32 are provided with annular rolling edges 34, and the cross section profile of the rolling groove 32 is semicircular; the two annular rolling edges 34 are respectively in rolling connection with the two arc-shaped groove edges 35; the rolling groove 32 and the pipe bending guide groove 33 intersect to form a second pipe body restriction hole 29 having a circular shape.
A vertical pipe bending guide ball driving steering engine 14 is fixedly mounted on the upper side of the circle center of the right-angle fan-shaped platform 10.1, and a steering engine output shaft 8 of the pipe bending guide ball driving steering engine 14 and the fan-shaped circle center of the right-angle fan-shaped platform 10.1 are coaxially arranged; the upper end of a steering engine output shaft 8 of the steering engine 14 driven by the pipe body bending guide ball is connected with a rotary beam 9, one side of the rotary beam 9 is connected with a plurality of rotating arms 11 arranged in parallel, the tail ends of the plurality of rotating arms 11 are connected with an upper support 12 together, and a lower support 15 is fixedly connected below the upper support 12 through a plurality of linkage columns 13; one end of the lower support 15 is connected with an arc arm 16, and the circle center of the arc arm 16 is superposed with the circle center of the right-angle fan-shaped platform 10.1; a hard guide ball 27 with a bent pipe body is fixedly connected to the clockwise end of the arc arm 16, and the counterclockwise end of the arc arm 16 is fixedly connected to one end of the lower support 15 through a connecting piece; the spherical center of the hard guide ball 27 is located on the arc center line of the pipe bending guide groove 33, and the diameter of the hard guide ball 27 is the same as the inner diameter of the arc pipe 1.1 bent in the pipe bending guide groove 27.
A cutting knife seam 28 is vertically arranged at the transition connection position of the arc-shaped edge 30 of the right-angle fan-shaped platform 10.1 and a rectangular edge 31 of the rectangular platform 10.2;
the equipment base 26 is provided with a horizontal guide rail 7, and the guide rail 7 is vertical to the extending direction of the linear groove 39; a sliding block 24 is arranged on the guide rail 7 in a sliding manner, a linear motor 19 is further installed on the equipment base 26, and a linear push rod 22 of the linear motor 19 is parallel to the extending direction of the guide rail 7; the tail end of the linear push rod 22 is connected with the slide block 24 in a linkage manner through a linkage piece 23; a cutting machine bracket 5 is fixedly arranged on the sliding block 24, a cutting machine 3 is arranged at the top end of the cutting machine bracket 5, and a rotary cutting blade 4 of the cutting machine 3 corresponds to the cutting knife seam 28; the cutting slit 28 has a slit thickness greater than the thickness of the cutting blade 4.
The bending process of the bending device for the arc-shaped pipe body comprises the following steps:
step one, a propelling device coaxially propels one end of a straight pipe 1 to be bent into a straight groove 39, the straight pipe 1 to be bent in the straight groove 39 coaxially and movably penetrates through a first pipe body restriction hole 81, and finally the tail end of the straight pipe 1 to be bent is just coaxially inserted into a second pipe body restriction hole 29, so that the straight pipe 1 to be bent propelled into the straight groove 39 is in a restricted state in the radial direction, but the straight pipe 1 to be bent is still in a free state in the axial direction;
step two, starting the pipe body bending guide ball to drive the steering engine 14, and controlling the pipe body bending hard guide ball 27 to clockwise move to the clockwise end of the pipe body bending guide groove 33 along the central line of the pipe body bending guide groove 33, wherein the pipe body bending hard guide ball 27 is just sleeved into the pipe orifice at the tail end of the straight pipe 1 to be bent;
step three, the propulsion device continues to slowly propel the straight pipe 1 to be bent along the axis, the tail end of the straight pipe 1 to be bent gradually passes through the second pipe body restriction hole 29, meanwhile, the pipe body bending guide ball is controlled to drive the steering engine 14, so that the pipe body bending hard guide ball 27 slowly moves along the center line of the pipe body bending guide groove 33 in the anticlockwise direction,
the hard guide ball 27 for bending the pipe body is always positioned in the pipe orifice at the tail end of the straight pipe 1 to be bent;
the straight pipe 1 to be bent gradually passing through the second pipe body restriction hole 29 is bent anticlockwise into a bent pipe section 1.2 under the anticlockwise guidance of the pipe body bending hard guide ball 27, the bent pipe section 1.2 is slowly fed along the anticlockwise direction of the pipe body bending guide groove 33 along with the fact that the pushing device continues to slowly push the straight pipe 1 to be bent along the axis until the tail end of the bent pipe section 1.2 reaches the counterclockwise end of the pipe body bending guide groove 33, and the bent pipe section 1.2 is a complete circular arc pipe 1.1 bent by 90 degrees; although the complete arc tube is integrally formed in the guiding and bending process of the hard guiding ball 27 for bending the tube body in the step, the outer wall and the inner wall of the arc tube at the moment have the phenomena of local depression, protrusion, unevenness and low roundness;
fourthly, controlling the pipe body bending guide ball to drive the steering engine 14, enabling the pipe body bending hard guide ball 27 to slowly move clockwise along the central line of the pipe body bending guide groove 33 to the clockwise end of the pipe body bending guide groove 33, further enabling the pipe body bending hard guide ball 27 to walk through the pipe inner arc channel 42 of the whole circular arc pipe 1.1, and enabling the pipe body bending hard guide ball 27 to play a role in shaping and leveling the inner wall of the circular arc pipe 1.1 in the process of slowly displacing clockwise along the pipe inner arc channel 42 of the circular arc pipe 1.1;
step five, starting the roller wheel to drive the steering engine 17, and then driving the pipe body rolling wheel 21 to roll anticlockwise along the arc-shaped groove edge 35 by the roller wheel driving steering engine 17 through the rocker arm 20 until the pipe body rolling wheel 21 rolls to the counterclockwise end of the pipe body bending guide groove 33; in the process, due to the rolling of the pipe body rolling wheel 21, the second pipe body restriction hole 29 is moved along the pipe body bending guide groove 33 in a counterclockwise direction to the counterclockwise end of the pipe body bending guide groove 33; the second pipe body restriction hole 29 is a rigid hole which is sleeved on the circular arc pipe 1.1 all the time, so that the second pipe body restriction hole 29 plays a role in shaping and flattening the outer wall of the circular arc pipe 1.1 in the process of moving along the pipe body bending guide groove 33 in a counterclockwise direction to the counterclockwise end of the pipe body bending guide groove 33;
step six, controlling the pipe bending guide ball to drive the steering engine 14, and enabling the pipe bending hard guide ball 27 to slowly move anticlockwise along the central line of the pipe bending guide groove 33 until the pipe bending hard guide ball 27 avoids the feeding path of the rotary cutting blade 4; then starting the cutting machine 3, and starting the linear motor 19 to feed the cutting machine 3 towards the cutting knife seam 28 until the rotary cutting blade 4 on the cutting machine 3 is fed to the connecting position of the cut circular arc pipe 1.1 and the straight pipe 1 to be bent; until the circular arc pipe 1.1 is separated from the straight pipe 1 to be bent; thereby forming an independent finished product of the circular arc tube 1.1.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (3)
1. The utility model provides an arc pipe bending device which characterized in that: the device comprises an equipment base (26), wherein a horizontal pipe bending guide platform (10) is arranged above the equipment base (26) through a support column (60);
the pipe bending guide platform (10) is formed by horizontally and integrally connecting a right-angle fan-shaped platform (10.1) and a rectangular platform (10.2), and an arc-shaped edge (30) of the right-angle fan-shaped platform (10.1) is in tangential transition with a rectangular edge (31) of the rectangular platform (10.2);
a horizontal pipe body bending guide groove (33) is formed in the arc-shaped side face where the arc-shaped edge (30) of the right-angle fan-shaped platform (10.1) is located, and the pipe body bending guide groove (33) extends along the bending radian of the arc-shaped edge (30); a horizontal straight line groove (39) is formed in the side face, where the rectangular edge (31) of the rectangular platform (10.2) is located; the clockwise end of the pipe bending guide groove (33) is communicated with one end of the linear groove (39); the cross section profiles of the linear groove (39) and the pipe body bending guide groove (33) are semicircular with the same radius; the inner diameters of the straight line groove (39) and the pipe body bending guide groove (33) are the same as the outer diameter of the straight pipe (1) to be bent;
two sides of the linear groove (39) are symmetrical linear groove edges (38), two sides of the pipe body bending guide groove (33) are symmetrical arc groove edges (35), and the clockwise end of each arc groove edge (35) is tangent to the corresponding linear groove edge (38);
a guide wheel bracket (18) is fixedly arranged on the rectangular platform (10.2), and a straight pipe guide wheel (2) is rotatably arranged at the tail end of the guide wheel bracket (18) through a bearing; the middle part of the wheel surface of the straight pipe guide wheel (2) is provided with an annular straight pipe guide groove (37), two sides of the straight pipe guide groove (37) are provided with annular groove edges (36), and the cross section profile of the straight pipe guide groove (37) is semicircular; the two annular groove edges (36) are respectively connected with the two linear groove edges (38) in a sliding tangent mode; a circular first pipe body constraint hole (81) is formed at the intersection position of the straight pipe guide groove (37) and the straight line groove (39);
a vertical roller wheel driving steering engine (17) is fixedly mounted on the lower side of the circle center of the right-angle fan-shaped platform (10.1), and an output shaft (07) of the roller wheel driving steering engine (17) and the fan-shaped circle center of the right-angle fan-shaped platform (10.1) are coaxially arranged; the tail end of the output shaft (07) of the steering engine driven by the roller wheel is fixedly connected with a rocker arm (20), the tail end of the rocker arm (20) is fixedly connected with a vertical rolling wheel shaft (09), and the upper end of the rolling wheel shaft (09) is rotatably connected with a pipe body rolling wheel (21) through a bearing;
the middle height of the wheel face of the pipe body rolling wheel (21) is provided with an annular rolling groove (32), two sides of the rolling groove (32) are provided with annular rolling edges (34), and the cross section profile of the rolling groove (32) is semicircular; the two annular rolling edges (34) are respectively in rolling connection with the two arc-shaped groove edges (35); a second circular pipe body restriction hole (29) is formed at the intersection position of the rolling groove (32) and the pipe body bending guide groove (33);
a vertical pipe bending guide ball driving steering engine (14) is fixedly mounted on the upper side of the circle center of the right-angle fan-shaped platform (10.1), and a steering engine output shaft (8) of the pipe bending guide ball driving steering engine (14) and the fan-shaped circle center of the right-angle fan-shaped platform (10.1) are coaxially arranged; the upper end of a steering engine output shaft (8) of the steering engine (14) driven by the pipe body bending guide ball is connected with a rotary cross beam (9), one side of the rotary cross beam (9) is connected with a plurality of rotary arms (11) which are arranged in parallel, the tail ends of the rotary arms (11) are connected with an upper support (12) together, and a lower support (15) is fixedly connected below the upper support (12) through a plurality of linkage columns (13); one end of the lower support (15) is connected with an arc arm (16), and the circle center of the arc arm (16) is superposed with the circle center of the right-angle fan-shaped platform (10.1); a hard guide ball (27) with a bent pipe body is fixedly connected to the clockwise end of the arc arm (16), and the counterclockwise end of the arc arm (16) is fixedly connected with one end of the lower support (15) through a connecting piece; the sphere center of the pipe body bending hard guide ball (27) is located on the arc center line of the pipe body bending guide groove (33), and the diameter of the pipe body bending hard guide ball (27) is the same as the inner diameter of the arc pipe (1.1) bent in the pipe body bending guide groove (33).
2. The arcuate tube bending apparatus according to claim 1, wherein: a cutting knife seam (28) is vertically arranged at the transition connection position of the arc-shaped edge (30) of the right-angle fan-shaped platform (10.1) and one rectangular edge (31) of the rectangular platform (10.2);
a horizontal guide rail (7) is arranged on the equipment base (26), and the guide rail (7) is vertical to the extending direction of the linear groove (39); a sliding block (24) is arranged on the guide rail (7) in a sliding manner, a linear motor (19) is further installed on the equipment base (26), and a linear push rod (22) of the linear motor (19) is parallel to the extending direction of the guide rail (7); the tail end of the linear push rod (22) is connected with the sliding block (24) in a linkage manner through a linkage piece (23); a cutting machine support (5) is fixedly mounted on the sliding block (24), a cutting machine (3) is mounted at the top end of the cutting machine support (5), and a rotary cutting blade (4) of the cutting machine (3) corresponds to the cutting knife seam (28); the cutting blade slit (28) has a slit thickness greater than the thickness of the rotating cutting blade (4).
3. The bending process of an arcuate tube bending apparatus according to claim 2, wherein: the method comprises the following steps:
step one, a propelling device coaxially propels one end of a straight pipe (1) to be bent into a straight groove (39), the straight pipe (1) to be bent in the straight groove (39) coaxially and movably penetrates through a first pipe body restriction hole (81), and finally the tail end of the straight pipe (1) to be bent is just coaxially inserted into a second pipe body restriction hole (29), so that the straight pipe (1) to be bent propelled into the straight groove (39) is in a restricted state in the radial direction, but the straight pipe (1) to be bent is still in a free state in the axial direction;
step two, starting the pipe body bending guide ball to drive the steering engine (14), and controlling the pipe body bending hard guide ball (27) to clockwise move to the clockwise end of the pipe body bending guide groove (33) along the central line of the pipe body bending guide groove (33), wherein the pipe body bending hard guide ball (27) is just sleeved into a pipe orifice at the tail end of the straight pipe (1) to be bent;
thirdly, the propulsion device continues to slowly propel the straight pipe (1) to be bent along the axis, the tail end of the straight pipe (1) to be bent gradually passes through the second pipe body restriction hole (29), meanwhile, the pipe body bending guide ball is controlled to drive the steering engine (14), the pipe body bending hard guide ball (27) slowly moves anticlockwise along the central line of the pipe body bending guide groove (33), and the pipe body bending hard guide ball (27) is always in the pipe orifice at the tail end of the straight pipe (1) to be bent;
the straight pipe (1) to be bent gradually passing through the second pipe body restriction hole (29) is bent anticlockwise into a bent pipe section (1.2) under the anticlockwise guidance of the pipe body bending hard guide ball (27), the straight pipe (1) to be bent is continuously and slowly pushed along the axis along with the pushing device, the bent pipe section (1.2) is slowly fed anticlockwise along the pipe body bending guide groove (33) until the tail end of the bent pipe section (1.2) reaches the counterclockwise end of the pipe body bending guide groove (33), and the bent pipe section (1.2) is a complete circular arc pipe (1.1) bent by 90 degrees at the moment;
fourthly, controlling the pipe body bending guide ball to drive the steering engine (14), enabling the pipe body bending hard guide ball (27) to slowly move clockwise to the clockwise end of the pipe body bending guide groove (33) along the central line of the pipe body bending guide groove (33), further enabling the pipe body bending hard guide ball (27) to walk through an in-pipe arc channel (42) of the whole arc pipe (1.1), and enabling the pipe body bending hard guide ball (27) to have a shaping and leveling effect on the inner wall of the arc pipe (1.1) in the process of slowly displacing clockwise along the in-pipe arc channel (42) of the arc pipe (1.1);
step five, starting the roller wheel to drive the steering engine (17), and then driving the pipe body rolling wheel (21) to roll anticlockwise along the arc-shaped groove edge (35) through the roller wheel driving steering engine (17) through the rocker arm (20) until the pipe body rolling wheel (21) rolls to the counterclockwise end of the pipe body bending guide groove (33); in the process, due to the rolling of the pipe body rolling wheel (21), the second pipe body restriction hole (29) moves along the pipe body bending guide groove (33) to the counterclockwise end of the pipe body bending guide groove (33); the second pipe body restriction hole (29) is a rigid hole which is sleeved on the circular arc pipe (1.1) all the time, so that the second pipe body restriction hole (29) plays a role in shaping and leveling the outer wall of the circular arc pipe (1.1) in the process of moving along the pipe body bending guide groove (33) in a counterclockwise direction to the counterclockwise end of the pipe body bending guide groove (33);
step six, controlling the pipe bending guide ball to drive the steering engine (14), and enabling the pipe bending hard guide ball (27) to slowly move anticlockwise along the central line of the pipe bending guide groove (33) until the pipe bending hard guide ball (27) avoids the feeding path of the rotary cutting blade (4); then starting the cutting machine (3), starting the linear motor (19), and feeding the cutting machine (3) towards the cutting knife seam (28) until a rotary cutting blade (4) on the cutting machine (3) is fed to the connecting position of the cut circular arc pipe (1.1) and the straight pipe (1) to be bent; the circular arc pipe (1.1) is separated from the straight pipe (1) to be bent; thereby forming an independent arc pipe finished product.
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| CN201910737823.5A CN110369572B (en) | 2019-08-12 | 2019-08-12 | Bending device and bending process for arc-shaped pipe body |
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| CN201910737823.5A CN110369572B (en) | 2019-08-12 | 2019-08-12 | Bending device and bending process for arc-shaped pipe body |
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| CN111098146A (en) * | 2020-01-19 | 2020-05-05 | 江苏金彭集团有限公司 | Automatic all-in-one of bending, punching and plastic is managed in side |
| CN111496031A (en) * | 2020-05-22 | 2020-08-07 | 杭涛 | U-shaped pipe bending forming mechanism and bending process |
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| RU2353455C2 (en) * | 2006-01-16 | 2009-04-27 | ООО "НПФ "Инстан" | Tube bending device |
| CN103286209A (en) * | 2013-05-22 | 2013-09-11 | 昆山西诺巴精密模具有限公司 | Arc bending die for L-shaped aluminum section bar |
| CN205253788U (en) * | 2016-01-04 | 2016-05-25 | 谷城县锐丰机械有限公司 | A bending device for cement pump truck return bend |
| CN105855332A (en) * | 2016-04-29 | 2016-08-17 | 天津东方奇运汽车制造有限公司 | 90-degree bending device |
| CA3025930A1 (en) * | 2016-05-31 | 2017-12-07 | Hubbell Incorporated | Helical bending device |
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