CN115971297A - Multi-boosting-block integrated bent pipe forming line driving boosting device - Google Patents
Multi-boosting-block integrated bent pipe forming line driving boosting device Download PDFInfo
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- CN115971297A CN115971297A CN202211614709.1A CN202211614709A CN115971297A CN 115971297 A CN115971297 A CN 115971297A CN 202211614709 A CN202211614709 A CN 202211614709A CN 115971297 A CN115971297 A CN 115971297A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
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- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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Abstract
The invention discloses a multi-boosting block integrated elbow forming line driving boosting device. The adjustable straight pipe bending machine comprises a plurality of movable boosting blocks, a line driving force module and a shell fixing module, wherein the movable boosting blocks are distributed on the shell fixing module at intervals along the circumferential direction, the inner side of each movable boosting block is in contact with the outer convex side pipe wall of a straight pipe blank, different tangential boosting forces are provided for a bent pipe in the bending process, the magnitude of the tangential boosting force can be adjusted through the screwing-in depth of a flat-headed top wire on a middle supporting die, the line driving force module controls the movable boosting blocks to move back and forth through a winch wheel and Kevlar wires fixed on two sides of the winch wheel, and the adjustment of the acting position and the boosting speed of the tangential boosting force is realized. The invention realizes the effective adjustment of the tangential boosting force in the circumferential direction of the bent pipe in the rotary stretching and bending process, can further reduce the distortion of the section of the bent pipe, improves the forming quality of the pipe bending and provides conditions for related scientific research.
Description
Technical Field
The invention belongs to the field of bending and forming of metal pipes, and particularly relates to a multi-boosting-block-integrated bent pipe forming line driving boosting device.
Background
The metal thin-wall bent pipe has the characteristics of unique structure, attractive appearance, excellent performance and the like, and is widely applied to various fields of modern industry. The straight pipe blank can be processed into the bent pipe with the required specification through rotary stretching and bending, but the generation of the bending defect is an unavoidable phenomenon in the processing process. The bent pipe formed by bending often has the defects of reduced thickness of the convex side wall, increased thickness of the concave side wall, flattening distortion and corrugation of the whole cross section, and the defects seriously affect the quality and the service life of the bent pipe and need to be strictly controlled during production and manufacturing.
As one of the important components of the rotary stretching and bending die, the pressure die achieves the purpose of reducing the defects of wall thickness reduction, cross section flattening distortion and the like by improving the uneven distribution condition of the stress on the cross section of the bent pipe, and has positive significance for improving the forming quality of the bent pipe. However, the traditional pressure die is simple in structure and single in form, so that an operator cannot further adjust the process conditions such as the tangential boosting force, the acting position, the boosting speed and the like in the circumferential direction according to actual conditions, and the boosting effect of the pressure die is greatly reduced. In order to produce a metal bent pipe with a more precise size and meet related scientific research requirements, a brand-new boosting device with low cost and capable of adjusting tangential boosting force in the circumferential direction of the cross section of the bent pipe is needed.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides a multi-boosting block integrated elbow forming line driving boosting device, which can adjust tangential boosting force acting on different positions of the convex side of a pipe fitting according to the variation trend of stress strain on the cross section of an elbow so as to improve the forming quality of the elbow. The movable boosting block provides different tangential boosting forces for the bent pipe in the bending processing process, the magnitude of the tangential boosting force can be adjusted through the screwing-in depth of a flat-top screw on the middle supporting die, and the linear driving force module controls the movable boosting block to move back and forth through a reel and Kevlar wires fixed on two sides of the reel, so that the action position of the tangential boosting force and the boosting speed are adjusted.
The technical scheme adopted by the invention is as follows:
1. multi-boosting-block integrated bent pipe forming line driving boosting device
Comprises a plurality of movable boosting blocks, a wire driving force module and a shell fixing module; the inner side surface of the shell fixing module is provided with a plurality of strip-shaped movable boosting blocks which are distributed along the circumferential direction, the top surfaces of the plurality of movable boosting blocks are respectively arranged on a plurality of sliding rails arranged on the inner side surface of the shell fixing module, and the bottom surfaces of the plurality of movable boosting blocks are contacted with the pipe wall of the convex side of the straight pipe blank; the contact pressure between the movable boosting block and the straight pipe blank is adjusted by adjusting the screwing-in depth of the flat-head jackscrew on the middle supporting die; each movable boosting block reciprocates on the shell fixing module under the control of the corresponding linear driving force module, and different tangential boosting forces are applied to different positions of the pipe fitting by the aid of relative movement between the movable boosting blocks and the straight pipe blank.
The movable boosting block comprises a middle supporting die, a pressure die lining, a sliding block and a flat-end jackscrew; the bottom surface of the middle supporting die is provided with a through groove which penetrates through the middle supporting die from front to back, and the liner in the pressure die is positioned in the through groove and is matched with the through groove in shape; the pressure die lining is in clearance fit with the through groove in the circumferential direction, and a moving allowance is reserved between the pressure die lining and the through groove in the radial direction; the top of the middle supporting die is provided with a plurality of threaded holes at intervals, and the top of the inner liner of the pressure die is provided with a plurality of counter bores communicated with the threaded holes; the flat-head jackscrew extends into a counter bore of the pressure die lining through a threaded hole of the middle support die, the flat-head jackscrew is fixed on the middle support die through threaded fit, and the flat-head end of the flat-head jackscrew is contacted with the bottom of the counter bore; the top surface of the middle supporting die is fixed with a sliding block.
The counter bore of the pressure die lining is a unthreaded hole, the bottom surface of the counter bore is a plane, and the aperture is larger than the major diameter of the flat-head jackscrew thread; the substrate surface in the pressure die is in an arc shape and is used for contacting with the tube wall and providing boosting force; the flat-head jackscrew on the middle support die is screwed to increase the radial pressure on the pressure die lining, so that the contact pressure between the pressure die lining and the straight tube blank is increased, the tangential boosting force on the straight tube blank is increased, and otherwise, the tangential boosting force can be reduced.
The shell fixing module comprises a shell, a sliding rail and a V-shaped bearing fixing seat; the inner side surface of the shell is of an arch structure, the arch structure is formed by sequentially connecting a plurality of planes, the arch section is formed by sequentially connecting a plurality of line segments from head to tail, the length of each line segment is equal, and the included angle formed by two adjacent line segments is equal; each plane of the inner side surface of the shell is fixedly provided with a sliding rail extending towards the front-back direction, the middle supporting die is arranged on the shell through sliding fit between the sliding block fixed on the top surface and the sliding rail, and two ends of the sliding rail are provided with limiting blocks for limiting the sliding block; each sliding rail is provided with a strip-shaped sliding chute extending towards the front-back direction, two ends of the strip-shaped sliding chute do not extend to penetrate through the sliding rail, and the shell is provided with a through groove which is consistent with the strip-shaped sliding chute in shape and is communicated with the strip-shaped sliding chute; the front end and the rear end of the outer side surface of the shell, which are close to each through groove, are provided with V-shaped bearing fixing seats through bolts; and V-shaped bearings are arranged on each V-shaped bearing fixing seat and each limiting block through a plug bolt and a nut.
The flat-head jackscrew position of the middle supporting die corresponds to the through groove position of the shell and the strip-shaped sliding groove position of the sliding rail; the screw-in depth of the flat-headed jackscrew on the middle supporting die is adjusted by the strip-shaped sliding groove of the sliding rail after the inner hexagonal wrench stretches into the through groove of the shell.
The linear driving force module comprises a reel supporting seat, a reel and a Kevlar, the reel is arranged between two V-shaped bearing fixing seats corresponding to each through groove through the reel supporting seat, and the inclination angles of the reel and the V-shaped bearings on the left and right V-shaped bearing fixing seats are the same; two U-shaped holes which are symmetrical in position and staggered in the axial direction are formed in the circumferential surface of the reel; one ends of two symmetrically arranged Kevlar wires are respectively fixed in U-shaped holes at two sides of the reel, the other end of one Kevlar wire is fixed in a slot hole at the front end of the sliding block through a V-shaped bearing fixing seat at the front part and a V-shaped bearing on the limiting block in sequence, the other end of the other Kevlar wire is fixed in a slot hole at the rear end of the sliding block through a V-shaped bearing fixing seat at the rear part and a V-shaped bearing on the limiting block in sequence, and the Kevlar wire is tensioned through the V-shaped bearing and limited.
The reel supporting seat is fixed on the shell through a bolt, the reel is arranged on the reel supporting seat through a reel shaft, and the reel shaft is connected with the reel supporting seat through two flange bearings; the central shaft hole of the reel and the reel shaft are respectively provided with a pin slot corresponding to the position, and the reel shaft is arranged on the reel through the transition fit of the pin slot and the pin; two clamp spring grooves are formed in the winch shaft and used for mounting a small clamp spring and a large clamp spring respectively, and the small clamp spring and the large clamp spring are used for axially positioning the winch shaft.
The winch wheel shaft is connected with an external motor, the winch wheel is driven to rotate by the external motor, the Kevlar wire on one side is released from the winch wheel, the Kevlar wire on the other side is wound on the winch wheel, and the movable boosting block moves back and forth along the sliding rail under the driving of the Kevlar wire.
2. Working method of multi-boosting-block-integrated elbow forming line drive boosting device
The method comprises the following steps:
step 1: the whole boosting device is fixed on the pipe bender through the shell, the reel is driven by an external motor to rotate clockwise or anticlockwise so as to release or wind Kevlar wires on two sides of the reel, and then the position of each movable boosting block relative to the straight pipe blank is adjusted;
step 2: after the position is adjusted, coating lubricating oil on the bottom surface of each pressure die lining, changing the screwing-in depth of the flat-head jackscrew on the middle supporting die by using an inner hexagonal wrench, and adjusting the contact pressure between each pressure die lining and the straight pipe blank by adjusting the extrusion force of the flat-head jackscrew on the pressure die lining;
and step 3: in the process of bending the pipe fitting, the external oil cylinder drives the whole boosting device to move along the feeding direction of the pipe fitting, and at the moment, the external motor drives the reel wheels to rotate to finely adjust the movement speed of the movable boosting blocks;
therefore, the adjustment of the magnitude, the position and the boosting speed of each tangential boosting force of each movable boosting block on the pipe fitting in the circumferential direction is realized.
The size, the position and the acting speed of each tangential boosting force in the circumferential direction of the bent pipe fitting are changed by adjusting the state of each movable boosting block on the boosting device, so that a plurality of boosting forces which change along the circumferential direction are generated, the distribution rule of stress strain on the cross section of the bent pipe fitting is met, and the forming quality of the bent pipe is improved.
And the movable boosting block is replaced according to actual needs so as to change the contact area between the pressure die lining and the straight pipe blank in the machining process.
The invention has the beneficial effects that:
(1) After the assembly is completed, the screwing depth of the flat-top jackscrew on the middle support die can be directly and quickly adjusted through the shell and the through grooves on the slide rail, so that the contact pressure between the linings of the pressure dies and the straight tube blank is adjusted, the uneven tangential stress distribution condition on the cross section of the bent tube in the machining process is improved, and more materials are pushed to the bending deformation area, so that the forming quality of the bent tube is improved.
(2) The invention drives each movable boosting block to move back and forth by clockwise or anticlockwise rotation of the reel, changes the action position of tangential boosting force in the circumferential direction and the boosting speed in processing, and provides conditions for reducing the section distortion of the bent pipe, exploring the optimal process parameters and developing related scientific researches.
(3) The invention can replace the parts such as the middle supporting die, the pressure die lining and the like according to the actual needs, the replacement process is convenient and quick, and the cost is low.
Drawings
FIG. 1 is an overall schematic view of the present invention.
Fig. 2 is a side view of the present invention as a whole.
Fig. 3 (a) and 3 (b) are a schematic view and a sectional view, respectively, of the movable assist block.
Fig. 4 is an exploded view of the line driving force module.
Fig. 5 (a), 5 (b), and 5 (c) are a front view, a side view, and a cross-sectional view of the reel, respectively.
Fig. 6 is a schematic view of a housing fixing module.
Fig. 7 is a schematic view of a slide rail, a limiting block and a V-shaped bearing on the inner side of the housing.
Fig. 8 (a) and 8 (b) are a schematic view and a side view of the housing, respectively.
Fig. 9 is a schematic diagram of adjusting the penetration depth of the flat-head jackscrew on the threaded hole of the middle support die through the shell and the through groove of the sliding rail.
Fig. 10 is an operation diagram of the rotation of the reel for driving the movement of the single movable boosting block.
In the figure: 1. the device comprises a movable boosting block, 2, a line driving force module, 3, a shell fixing module, 4, a straight pipe blank, 5, an intermediate supporting die, 6, a sliding block, 7, a flat-headed jackscrew, 8, a pressure die lining, 9, a reel supporting seat, 10, a bolt, 11, a small clamp spring, 12, a flange bearing, 13, a pin, 14, a reel, 15, a reel shaft, 16, a large clamp spring, 17, a Kevlar wire, 18, a V-shaped bearing supporting seat, 19, a stopper bolt, 20, a V-shaped bearing, 21, a nut, 22, a shell, 23, a bolt, 24, a sliding rail, 25, a limiting block, 26, a U-shaped hole, 27 and a line slot hole.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in fig. 1 and 2, a multi-boosting block integrated pipe bending forming line driving boosting device comprises a plurality of movable boosting blocks 1, a line driving force module 2 and a shell fixing module 3, wherein five groups of movable boosting blocks 1 distributed along the circumferential direction are fixed on the shell fixing module 2 at the top surface, the bottom surface is in contact with the outer convex side pipe wall of a straight pipe blank 4, each movable boosting block 1 provides different tangential boosting forces for a pipe bending through relative motion with the straight pipe blank 4 in the rotary stretching and bending process, and each movable boosting block is provided with a group of line driving force modules 2 corresponding to the movable boosting block to control the reciprocating motion on the shell fixing module 3.
As shown in fig. 3 (a) and 3 (b), the movable boosting block 1 comprises an intermediate support die 5, sliding blocks 6, flat-top jackscrews 7 and a pressure die lining 8, wherein through slots are formed in the front and back surfaces of the intermediate support die 5, three threaded holes and stepped holes for fixing the sliding blocks 6 are sequentially formed in the top of the intermediate support die 5, and the two sliding blocks 6 are fixed on the intermediate support die 5 through bolts; one side of the pressure die lining 8 close to the straight pipe blank 4 is an inner side and is arc-shaped, one side close to the shell is an outer side, the whole shape is consistent with a through groove of the middle support die 5, counter bores with the same number as threaded holes of the middle support die 5 are formed in the top of the pressure die lining 8, the pressure die lining 8 and the middle support die 5 are in clearance fit in the circumferential direction, moving allowance is reserved in the radial direction, the flat-head jackscrew 7 is fixed on the middle support die 5 through threaded fit, the flat-head end of the flat-head jackscrew extends into the counter bore of the pressure die lining 8, the counter bore of the pressure die lining 8 is a smooth hole, the aperture is larger than the large diameter of the flat-head jackscrew 7, therefore, the flat-head jackscrew 7 only has the bottom flat-head end to be in contact with the bottom of the counter bore of the pressure die lining 8, the radial pressure borne by the pressure die lining 8 can be increased through screwing the flat-head jackscrew 7 on the middle support die 5, the contact pressure between the pressure die lining 8 and the straight pipe blank 4 is increased, the tangential boosting force can be increased, and the tangential boosting force can be reduced otherwise.
As shown in fig. 4 and 5, the wire driving force module 2 includes a reel supporting seat 9, a small snap spring 11, a flange bearing 12, a pin 13, a reel 14, a reel shaft 15, a large snap spring 16 and a kevlar line 17, the reel supporting seat 9 is fixed on the housing fixing module 3 by a bolt 10, the reel shaft 15 is provided with two snap spring grooves for mounting the small snap spring 11 and the large snap spring 16, respectively, the two snap springs are used for axially positioning the whole reel shaft, two flange bearings 12 are arranged between the reel shaft 15 and the reel supporting seat 9, so as to avoid friction between the reel shaft 15 and the reel supporting seat 9, the circumferential surface of the reel 14 is provided with two U-shaped holes 26 which are symmetrical in position and staggered axially, one end of the Kevlar 17 penetrates through a U-shaped hole 26 of the reel 14 and is fixed on the reel 14 through knotting, the other end of the Kevlar 17 is fixed in a wire groove hole 27 of the sliding block 6 through the same operation, the Kevlar 17 at one end can be released and simultaneously the Kevlar 17 at the other end can be tightened and wound through clockwise or anticlockwise rotation of the reel 14, so that the positions of the movable boosting blocks 1 relative to the straight pipe blank 4 are adjusted, pin grooves are formed in a shaft hole of the reel 14 and a reel shaft 15 and are in transition fit with pins, a thick shaft end of the reel shaft 15 is connected with an external motor, and the external motor controls the movement of the reel 14 through rotating the reel shaft 15.
As shown in fig. 6, 7 and 8, the housing fixing module includes a V-shaped bearing fixing seat 18, a V-shaped bearing 20, a housing 22, a sliding rail 24 and a limiting block 25, the housing 22 is a basic part of the entire boosting device, and all other parts are directly or indirectly connected with the housing 22; the V-shaped bearing fixing seat 18, the sliding rail 24 and the limiting block 25 are installed on the shell 22 through bolts 23, the upper portion of the V-shaped bearing fixing seat 18 is in the shape of two ears, the two-ear type structure is used for being matched with the plugging bolt 19 and the nut 21 to install the V-shaped bearing 20, the V-shaped bearing 20 is used for supporting and limiting the Kevlar line 17 to guarantee normal operation of the line driving force module 2 and is also installed on the limiting block 25 in the same structure, the sliding rail 24 located on the polygonal plane on the inner side of the shell 22 is used for fixing the movable boosting block 1 on the shell 22 through matching with the sliding block 6, the movement range of the sliding block 6 is limited through the limiting block 25, and through grooves which are consistent in shape and used for adjusting the screwing depth of the flat-head jackscrew 7 are formed in the sliding rail 24 and the shell 22. As shown in fig. 9, the flat-headed jackscrews 7 on the intermediate support die 5 can be seen through the through grooves on the outer shell 22 and the slide rails 24, and after the positions of the movable booster blocks 1 are adjusted, the screwing-in depth of the flat-headed jackscrews 7 can be directly adjusted by extending an allen wrench into the through grooves, so as to change the contact pressure between the liners 8 of the pressure dies and the straight pipe blanks 4.
As shown in fig. 10, before the reel 14 rotates, a part of the kevlar wires 17 on the left side are wound on the reel 14 in a counterclockwise manner, a part of the kevlar wires 17 on the right side are wound on the reel 14 in a clockwise manner, when the reel 14 rotates clockwise, the kevlar wires 17 on the left side are continuously wound on the reel 14, and the kevlar wires 17 on the right side which are already wound on the reel 14 are released, so that the movable push-aid block 1 is driven to move to the left side; when the reel 14 rotates counterclockwise, the kevlar wire 17 on the right side is continuously wound on the reel 14, and the kevlar wire 17 on the left side which has been wound on the reel 14 is released, thereby driving the movable push assist block 1 to move to the right.
The specific implementation mode is as follows:
when the pipe bender is used, the whole boosting device is fixed on the pipe bender through the shell 22, the twisting wheels 14 are driven to rotate through the external motor so as to release or wind the Kevlar 17 on two sides of each twisting wheel 14, and then the position of each movable boosting block 1 relative to the straight pipe blank 4 is adjusted (the positions of different movable boosting blocks 1 relative to the straight pipe blank 4 can be different); after the position is adjusted, coating specified lubricating oil on the inner side of the pressure die lining 8, controlling the boosting device to be in contact with the pipe wall of the straight pipe blank 4, and adjusting the screwing degree of the flat-head jackscrew 7 on the middle supporting die 5 by using an inner hexagonal wrench so as to adjust the tangential boosting force; after the contact pressure between each pressure die lining 8 and the straight pipe blank 4 is increased to a specified range, the rotary stretching and bending processing of the pipe is started, in the processing process, an external oil cylinder drives the whole boosting device to move along the feeding direction of the straight pipe blank 4, and at the moment, each reel 14 is driven to rotate according to needs, so that the speed of each movable boosting block 1 is finely adjusted, and the adjustment of the magnitude, the acting position and the boosting speed of each tangential boosting force in the circumferential direction is realized.
Claims (10)
1. A multi-boosting block integrated elbow forming line driving boosting device is characterized by comprising a plurality of movable boosting blocks (1), a line driving force module (2) and a shell fixing module (3); a plurality of strip-shaped movable boosting blocks (1) are distributed along the circumferential direction and are arranged on the inner side surface of the shell fixing module (3), the top surfaces of the plurality of movable boosting blocks (1) are respectively arranged on a plurality of sliding rails (24) arranged on the inner side surface of the shell fixing module (3), and the bottom surfaces of the plurality of movable boosting blocks are contacted with the outer convex side pipe wall of the straight pipe blank (4); the contact pressure between the movable boosting block (1) and the straight pipe blank (4) is adjusted by adjusting the screwing-in depth of the flat-head jackscrew (7) on the middle supporting die (5); each movable boosting block (1) reciprocates on the shell fixing module (3) under the control of the corresponding linear driving force module (2), and different tangential boosting forces are applied to different positions of the pipe fitting by the aid of the movable boosting blocks (1) and the straight pipe blank (4) through relative movement.
2. A multi-booster integrated bend forming line drive booster device according to claim 1, characterised in that the movable booster block (1) comprises an intermediate support die (5), a pressure die inner liner (8), a slide block (6) and a flat head top wire (7);
a through groove penetrating through the middle supporting die (5) from front to back is formed in the bottom surface of the middle supporting die, and a pressure die lining (8) is positioned in the through groove and is matched with the through groove in shape; the pressure die lining (8) is in clearance fit with the through groove in the circumferential direction, and a moving allowance is reserved between the pressure die lining and the through groove in the radial direction;
the top of the middle supporting die (5) is provided with a plurality of threaded holes at intervals, and the top of the pressure die lining (8) is provided with a plurality of counter bores communicated with the threaded holes; the flat-head jackscrew (7) extends into a counter bore of the pressure die lining (8) through a threaded hole of the middle support die (5), the flat-head jackscrew (7) is fixed on the middle support die (5) through threaded fit, and the flat head end of the flat-head jackscrew is contacted with the bottom of the counter bore;
the top surface of the middle supporting die (5) is fixed with a sliding block (6).
3. The multi-boosting-block-integrated elbow forming line driving boosting device according to claim 2, wherein the counter bore of the pressure die lining (8) is a unthreaded hole, the bottom surface of the counter bore is a plane, and the aperture is larger than the major diameter of the thread of the flat-top jackscrew (7); the bottom surface of the pressure die lining (8) is arc-shaped and is used for contacting with the pipe wall and providing boosting force; by screwing the flat-head jackscrew (7) on the middle support die (5), the radial pressure on the pressure die lining (8) is increased, so that the contact pressure between the pressure die lining (8) and the straight tube blank (4) is increased, the tangential boosting force on the straight tube blank (4) is increased, and otherwise, the tangential boosting force can be reduced.
4. A multi-booster block integrated elbow forming line drive booster device according to claim 1, characterized in that the housing fixing module (3) comprises a housing (22), a slide rail (24) and a V-shaped bearing fixing seat (18); the inner side surface of the shell (22) is of an arch structure, and the arch structure is formed by sequentially connecting a plurality of planes; each plane of the inner side surface of the shell (22) is fixedly provided with a sliding rail (24) extending towards the front-back direction, the middle supporting die (5) is arranged on the shell (22) through the sliding fit between the sliding block (6) fixed on the top surface and the sliding rail (24), and two ends of the sliding rail (24) are provided with limiting blocks (25) for limiting the sliding block (6); each sliding rail (24) is provided with a strip-shaped sliding groove extending towards the front-back direction, two ends of the strip-shaped sliding groove do not extend to penetrate through the sliding rail (24), and the shell (22) is provided with a through groove which is consistent with the strip-shaped sliding groove in shape and is communicated with the strip-shaped sliding groove; the front end and the rear end of the outer side surface of the shell (22) close to each through groove are respectively provided with a V-shaped bearing fixing seat (18) through bolts; v-shaped bearings (20) are mounted on each V-shaped bearing fixing seat (18) and each limiting block (25) through a plugging bolt (19) and a nut (21).
5. The multi-boosting block integrated elbow forming line driving boosting device according to claim 4, wherein the flat-head jackscrew (7) position of the intermediate support die (5) corresponds to the through groove position of the shell (22) and the strip-shaped sliding groove position of the sliding rail (24); the inner hexagonal wrench extends into the through groove of the shell (22) and then adjusts the screwing depth of the flat-headed jackscrew (7) on the middle supporting die (5) through the strip-shaped sliding groove of the sliding rail (24).
6. The multi-boosting-block-integrated elbow forming line driving boosting device according to claim 4, wherein the line driving force module (2) comprises a reel supporting seat (9), a reel (14) and a Kevlar wire (17), and the reel (14) is mounted between two V-shaped bearing fixing seats (18) corresponding to each through groove through the reel supporting seat (9); two U-shaped holes (26) which are symmetrical in position and staggered along the axial direction are formed in the circumferential surface of the reel (14); one ends of two symmetrically arranged Kevlar wires (17) are respectively fixed in U-shaped holes (26) at two sides of a reel (14), the other end of one Kevlar wire (17) is fixed in a slotted hole (27) at the front end of the sliding block (6) sequentially through a front V-shaped bearing fixing seat (18) and a V-shaped bearing (20) on a limiting block (25), the other end of the other Kevlar wire (17) is fixed in a slotted hole (27) at the rear end of the sliding block (6) sequentially through a rear V-shaped bearing fixing seat (18) and a V-shaped bearing (20) on the limiting block (25), and the Kevlar wire (17) is braced and limited through the V-shaped bearing (20).
7. The multi-boosting block integrated elbow forming line driving boosting device according to claim 6, wherein the reel supporting seat (9) is fixed on the housing (22) through a bolt (10), the reel (14) is mounted on the reel supporting seat (9) through a reel shaft (15), and the reel shaft (15) is connected with the reel supporting seat (9) through two flange bearings (12); the central shaft hole of the reel (14) and the reel shaft (15) are respectively provided with pin grooves corresponding to the positions, and the reel shaft (15) is arranged on the reel (14) through the transition fit of the pin grooves and the pins (13); two clamp spring grooves are formed in the winch shaft (15) and used for mounting a small clamp spring (11) and a large clamp spring (16) respectively, and the small clamp spring (11) and the large clamp spring (16) are used for axially positioning the winch shaft.
8. The multi-boosting block integrated elbow forming line driving boosting device is characterized in that the winch shaft (15) is connected with an external motor, the winch wheel (14) is driven to rotate by the external motor, so that the Kevlar wire (17) on one side is released from the winch wheel (14), the Kevlar wire (17) on the other side is wound on the winch wheel (14), and the movable boosting block (1) is driven by the Kevlar wire (17) to move back and forth along the sliding rail (24).
9. A method of operating a multi-booster block integrated elbow forming line drive booster apparatus according to any of claims 1 to 8, comprising the steps of:
step 1: the whole boosting device is fixed on the pipe bender through a shell (22), an external motor drives a reel (14) to rotate clockwise or anticlockwise so as to release or wind Kevlar (17) on two sides of the reel (14), and then the position of each movable boosting block (1) relative to the straight pipe blank (4) is adjusted;
step 2: after the position is adjusted, lubricating oil is coated on the bottom surface of each pressure die lining (8), an inner hexagonal wrench is used for changing the screwing-in depth of the flat-head jackscrew (7) on the middle supporting die (5), and the contact pressure between each pressure die lining (8) and the straight pipe blank (4) is adjusted by adjusting the extrusion force of the flat-head jackscrew (7) to the pressure die lining (8);
and step 3: in the pipe fitting bending process, an external oil cylinder drives the whole boosting device to move along the pipe fitting feeding direction, and at the moment, the external motor drives the reel wheels (14) to rotate to finely adjust the movement speed of the movable boosting blocks (1);
therefore, the adjustment of the magnitude and position of each tangential boosting force of each movable boosting block (1) on the pipe fitting in the circumferential direction and the boosting speed can be realized.
10. The working method according to claim 9, characterized in that the magnitude, position and acting speed of each tangential boosting force in the circumferential direction of the bent pipe fitting are changed by adjusting the state of each movable boosting block (1) on the boosting device, so that a plurality of boosting forces which are changed along the circumferential direction are generated to accord with the distribution rule of stress strain on the cross section of the bent pipe fitting, and further the forming quality of the bent pipe is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211614709.1A CN115971297A (en) | 2022-12-13 | 2022-12-13 | Multi-boosting-block integrated bent pipe forming line driving boosting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211614709.1A CN115971297A (en) | 2022-12-13 | 2022-12-13 | Multi-boosting-block integrated bent pipe forming line driving boosting device |
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| Publication Number | Publication Date |
|---|---|
| CN115971297A true CN115971297A (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211614709.1A Pending CN115971297A (en) | 2022-12-13 | 2022-12-13 | Multi-boosting-block integrated bent pipe forming line driving boosting device |
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| Country | Link |
|---|---|
| CN (1) | CN115971297A (en) |
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