CN110434203B

CN110434203B - Roll bending machine for manufacturing aluminum alloy section

Info

Publication number: CN110434203B
Application number: CN201910778069.XA
Authority: CN
Inventors: 刘文琦; 刘云华
Original assignee: Jiangsu China Airlines Heavy Industry Machine Tool Co ltd
Current assignee: Jiangsu China Airlines Heavy Industry Machine Tool Co.,Ltd.
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-07-07
Anticipated expiration: 2039-08-22
Also published as: CN110434203A

Abstract

The utility model provides an aluminum alloy ex-trusions makes roll bending machine, includes bottom plate, mount, drive arrangement, executes curved device, stopper, rolling device, clamping device and running roller, the bottom plate on install the mount, the mount is U type structure, mount upper end front side symmetry is provided with the arc through-hole. The invention can solve the problems that the processing of reducing resilience allowance of the round tubular material after the roll bending forming processing can not be carried out when the existing aluminum alloy section manufacturing roll bending machine is used for processing the round tubular material, so that the processed round tubular material has resilience, and meanwhile, when the round tubular material is clamped, clamping marks are easy to appear on the clamping surface of the round tubular material, so that the surface of the round tubular material is not smooth, and when the roll bending processing is started, the clamping part has no buffer function, so that the phenomena of fracture and bending of the round tubular material due to overlarge stress are easy to appear, so that the roll bending processing is failed, and the like.

Description

Roll bending machine for manufacturing aluminum alloy section

Technical Field

The invention relates to the technical field of section bar processing, in particular to a roll bending machine for manufacturing aluminum alloy section bars.

Background

The method for bending and forming the plate or the section through the rotation of the rotating shaft is called roll bending forming, the roll bending forming processing method is used in many processing fields, the roll bending forming method is simple and convenient to operate, most of round pipe-shaped structures or arc-shaped components are formed and processed by the roll bending processing method, and the roll bending processing method is applied in many processing fields due to high-efficiency production efficiency, high precision and stability.

At present, the following defects generally exist in the roll bending forming process of the round pipe section: 1. the existing equipment can not process the round pipe section after the roll bending forming processing to reduce the resilience allowance, so that the processed round pipe section has the resilience phenomenon; 2. when the existing equipment clamps a round pipe, the clamping mark is easy to appear on the clamping surface of the round pipe, so that the surface of the round pipe is not smooth, and when the roll bending processing starts, the clamping part has no buffer function, so that the phenomena of fracture and bending caused by overlarge stress of the round pipe are easy to occur, and the problem of failure of the roll bending processing is caused.

Disclosure of Invention

Technical problem to be solved

The invention can solve the problems that when the existing aluminum alloy section manufacturing roll bending machine is used for processing, the round pipe section after roll bending forming processing cannot be processed by reducing the resilience allowance, so that the processed round pipe section has the resilience phenomenon, and meanwhile, when the round pipe section is clamped, the clamping surface of the round pipe section is easy to generate clamping marks, so that the surface of the round pipe is not smooth, and when the roll bending processing is started, the clamping part has no buffer function, so that the round pipe section is easy to generate the phenomena of fracture and bending due to overlarge stress, so that the roll bending processing fails, and the like.

(II) technical scheme

In order to achieve the purpose, the invention adopts the following technical scheme that the roll bending machine for manufacturing the aluminum alloy section comprises a bottom plate, a fixing frame, a driving device, a bending device, a limiting block, rolling devices, a clamping device and a roller, wherein the fixing frame is installed on the bottom plate and is of a U-shaped structure, arc-shaped through holes are symmetrically formed in the front side of the upper end of the fixing frame, the rolling devices are connected in the arc-shaped through holes in a sliding fit mode, the limiting block is arranged between the two rolling devices and is installed on the fixing frame, a groove with a semicircular section is formed in the rear end face of the limiting block, the driving device is arranged in the fixing frame and is installed on the bottom plate, the left end of the driving device is connected with the rolling devices, the bending device is installed on the rear side of the upper end of, during specific work, the round pipe is installed in the clamping device, the clamping device clamps and fixes the round pipe, the bending device performs feeding motion to roll and bend the round pipe, the limiting block performs limiting effect on the bending device, and the driving device drives the rolling device to perform reciprocating motion.

The bending device comprises an air cylinder seat, an air cylinder, a connecting plate, a connecting shaft and a bending wheel, wherein the air cylinder seat is installed on a fixing frame, the air cylinder is installed at the upper end of the air cylinder seat, the connecting plate is installed at the top end of the air cylinder, the connecting shaft is installed inside the connecting plate, the middle of the connecting shaft is connected with the bending wheel through a bearing, a semicircular groove is formed in the outer end face of the bending wheel, the air cylinder is started when the bending device works specifically, the air cylinder drives the connecting plate to perform feeding motion, and the connecting plate drives the bending wheel through the connecting.

Rolling device include axis of rotation, limiting plate and the wheel that rolls, the axis of rotation pass through sliding fit's mode and install in the arc through-hole, arc through-hole outside symmetry is provided with the limiting plate, the limiting plate is installed in the axis of rotation, the wheel that rolls is installed through the bearing in the axis of rotation upper end, the axis of rotation lower extreme passes through the bearing and is connected with drive arrangement, the outer terminal surface of the wheel that rolls is provided with semicircular groove, concrete during operation, drive arrangement drives axis of rotation reciprocating motion in the arc through-hole, the epaxial roll wheel of axis of rotation carries out the roll bending processing to the pipe section bar, thereby realize reducing the function that produces the resilience surplus after the processing.

Clamping device include the bearing frame, the rotation axis, press from both sides tight seat, circular sleeve, elastic rubber and clamping mechanism, the bearing frame install on the mount, the bearing frame upper end is connected with the rotation axis through the bearing, press from both sides tight seat is installed to the rotation axis upper end, press from both sides tight seat upper end and install circular sleeve, the inside rectangle recess that is provided with of circular sleeve, the rectangle recess is connected with clamping mechanism through sliding fit's mode, evenly installed elastic rubber between clamping mechanism and the circular sleeve, concrete during operation, the rotation axis plays the drive clamping device and carries out the rotation effect when the roll bending is processed, press from both sides tight seat and play the effect that supports to circular sleeve, clamping mechanism presss from both sides tight fixedly to the tubular material, elastic rubber realizes the.

As a preferred technical scheme of the invention, the driving device comprises a motor, a roller, a slider rod, a slider, a connecting column, a fixing plate and a connecting rod, wherein the motor is arranged on a bottom plate through a motor base, an output shaft of the motor is connected with the roller, the roller is arranged at the upper end of the bottom plate through a roller carrier, the roller is connected with the roller carrier through a bearing, an arc-shaped annular groove is arranged on the surface of the roller, the slider rod is arranged at the upper end of the roller, the lower end of the slider rod is in sliding fit with the arc-shaped annular groove, the slider is arranged at the upper end of the slider rod, the connecting column is symmetrically arranged at the upper end of the slider, the connecting column is connected with the connecting rod through the bearing, the connecting rod is connected with a rolling device through the bearing, the fixing plate is arranged at the outer side of the, the slider passes through the connecting rod and drives rolling device and carry out reciprocating motion, realizes carrying out reciprocal roll bending's function to tubular product, and the fixed plate plays the effect of connecting and direction.

As a preferred technical scheme of the invention, the upper end of the fixing frame is symmetrically provided with the rollers which are positioned between the two clamping devices, the rollers are arranged on the fixing frame through the roller seats, and when the pipe rolling machine works, the round pipe profile rolls on the rollers, and the rollers realize the functions of supporting and reducing the friction of the round pipe profile.

As a preferred technical scheme of the invention, the clamping mechanism comprises a clamping sleeve, a screw rod, a conical head, a circular cylinder and a clamping block, wherein the clamping sleeve is arranged inside the circular sleeve, a threaded through hole is formed in the outer end surface of the clamping sleeve, the screw rod is connected inside the threaded through hole, the conical head is arranged on the inner side of the screw rod, the circular cylinder is arranged inside the clamping sleeve, the circular through holes are uniformly formed in the circular cylinder, the clamping block is connected inside the circular through hole, the conical head is driven by the screw rod to perform feeding motion during specific work, the conical head extrudes the clamping block, and the clamping block clamps and fixes the inside of the circular tubular material.

As a preferred technical scheme of the invention, the clamping block comprises a jacking seat, a jacking rod, a reset spring and a clamping plate, the jacking rod is connected with the circular through hole in a sliding fit manner, the lower end of the jacking rod is provided with the jacking seat, the jacking seat is of an arc structure with a right trapezoid cross section, the upper end of the jacking rod is provided with the clamping plate, the clamping plate is of an arc structure with a rectangular cross section, the outer surface of the clamping plate is provided with anti-slip threads, the reset spring is arranged between the jacking seat and the circular cylinder, the jacking seat is extruded to drive the jacking rod to perform feeding motion during specific work, the jacking rod drives the clamping plate to clamp and fix the inside of the circular tube-shaped material, clamping marks generated by clamping on the outer surface of the circular tube-shaped material are avoided, and the reset spring plays a reset role.

As a preferred technical scheme of the invention, the round sleeve is uniformly provided with balls inside, the inner end of the round sleeve is provided with a horn-shaped opening, the horn-shaped opening is provided with a mounting groove, the inside of the mounting groove is provided with anti-skid grains, the horn-shaped opening is provided with a rubber pad through the mounting groove, when the clamping sleeve works, the clamping sleeve can slide in the round sleeve through the balls, the function of buffering during roll bending is realized, the round pipe profile is prevented from being broken and bent during processing, the horn-shaped opening can reduce creases generated during roll bending of the round pipe profile, and the mounting groove arranged on the horn-shaped opening can realize the function of quickly replacing the rubber pad.

(III) advantageous effects

1. According to the aluminum alloy section manufacturing roll bending machine provided by the invention, the adopted rolling device can perform reciprocating roll bending on a round pipe section subjected to roll bending forming processing, so that reprocessing of the round pipe section is realized, the resilience allowance generated after the round pipe section is subjected to roll bending forming processing can be reduced, and the phenomenon of resilience of the round pipe section after processing is avoided;

2. according to the aluminum alloy section manufacturing roll bending machine provided by the invention, the clamping device can clamp and fix the round tube section from the inside of the round tube section, so that the clamping marks on the surface of the round tube section due to clamping are reduced, and the clamping mechanism can slide in the clamping device, so that the buffering effect is achieved in the roll bending process, and the phenomenon that the round tube section is broken due to overlarge stress when the roll bending process is started is avoided.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a front view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

FIG. 4 is a schematic view of the construction of the clamping device of the present invention;

fig. 5 is an enlarged view of the invention in the direction B of fig. 4.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

As shown in fig. 1 to 5, a roll bending machine for manufacturing aluminum alloy sections comprises a bottom plate 1, a fixing frame 2, a driving device 3, a bending device 4, a limiting block 5, a rolling device 6, a clamping device 7 and a roller 8, wherein the bottom plate 1 is provided with the fixing frame 2, the fixing frame 2 is of a U-shaped structure, the front side of the upper end of the fixing frame 2 is symmetrically provided with arc-shaped through holes, the inside of each arc-shaped through hole is connected with the rolling device 6 in a sliding fit manner, the limiting block 5 is arranged between the two rolling devices 6, the limiting block 5 is arranged on the fixing frame 2, the rear end surface of the limiting block 5 is provided with a groove with a semicircular section, the inside of the fixing frame 2 is provided with the driving device 3, the driving device 3 is arranged on the bottom plate 1, the left end of the driving device 3 is connected with the rolling device, clamping device 7 installs in the 2 upper end left and right sides of mount, and concrete during operation installs tubular product in clamping device 7, and clamping device 7 presss from both sides tightly fixedly to tubular product, and the device 4 feed motion of bending is executed and is rolled bending processing is carried out to tubular product, and stopper 5 plays spacing effect to the device 4 of bending, and drive arrangement 3 drives rolling device 6 and carries out reciprocating motion.

Drive arrangement 3 include motor 31, gyro wheel 32, slider pole 33, slider 34, spliced pole 35, fixed plate 36 and connecting rod 37, motor 31 install on bottom plate 1 through the motor cabinet, the output shaft and the gyro wheel 32 of motor 31 are connected, gyro wheel 32 passes through the gyro wheel frame and installs in bottom plate 1 upper end, be connected through the bearing between gyro wheel 32 and the gyro wheel frame, gyro wheel 32 surface is provided with the arc annular, gyro wheel 32 upper end is provided with slider pole 33, slider pole 33 lower extreme and arc annular sliding fit, slider 34 is installed to slider pole 33 upper end, spliced pole 35 is installed to slider 34 upper end symmetry, spliced pole 35 is connected with connecting rod 37 through the bearing, connecting rod 37 passes through the bearing and is connected with rolling device 6, the connecting rod 37 outside is provided with fixed plate 36, fixed plate 36 is H type structure, fixed plate 36 middle part is provided with the rectangle through-hole with slider 34 complex, the motor 31 drives the roller 32 to rotate, the roller 32 drives the slider 34 to reciprocate through the slider rod 33, the slider 34 drives the rolling device 6 to reciprocate through the connecting rod 37, the function of performing reciprocating roll bending on the circular tube type material is realized, and the fixing plate 36 plays roles in connection and guidance.

The bending device 4 comprises an air cylinder seat 41, an air cylinder 42, a connecting plate 43, a connecting shaft 44 and a bending wheel 45, wherein the air cylinder seat 41 is installed on the fixing frame 2, the air cylinder 42 is installed at the upper end of the air cylinder seat 41, the connecting plate 43 is installed at the top end of the air cylinder 42, the connecting shaft 44 is installed inside the connecting plate 43, the middle of the connecting shaft 44 is connected with the bending wheel 45 through a bearing, a semicircular groove is formed in the outer end face of the bending wheel 45, the air cylinder 42 is started during specific work, the air cylinder 42 drives the connecting plate 43 to move in a feeding mode, and the connecting plate 43 drives the bending wheel 45 through the connecting shaft 44.

Rolling device 6 include axis of rotation 61, limiting plate 62 and rolling wheel 63, axis of rotation 61 install in the arc through-hole through sliding fit's mode, arc through-hole outside symmetry is provided with limiting plate 62, limiting plate 62 is installed in axis of rotation 61, rolling wheel 63 is installed through the bearing in axis of rotation 61 upper end, axis of rotation 61 lower extreme passes through the bearing and is connected with drive arrangement 3, the outer terminal surface of rolling wheel 63 is provided with semi-circular groove, concrete during operation, drive arrangement 3 drives axis of rotation 61 reciprocating motion in the arc through-hole, the last rolling wheel 63 of axis of rotation 61 rolls curved processing to pipe section bar, the realization reduces the function that produces the resilience surplus after the processing, the limiting plate plays spacing effect to rolling wheel.

Clamping device 7 include bearing frame 71, rotation axis 72, press from both sides tight seat 73, circular sleeve 74, elastic rubber 75 and clamping mechanism 76, bearing frame 71 install on mount 2, bearing frame 71 upper end is connected with rotation axis 72 through the bearing, the tight seat 73 of clamp is installed to rotation axis 72 upper end, press from both sides tight seat 73 upper end and install circular sleeve 74, the inside rectangle recess that is provided with of circular sleeve 74, the rectangle recess is connected with clamping mechanism 76 through sliding fit's mode, evenly install elastic rubber 75 between clamping mechanism 76 and the circular sleeve 74, during concrete work, rotation axis 72 plays and drives clamping device 7 and carry out the rotation effect when the roll bending processing, press from both sides tight seat 73 and play the effect of support to circular sleeve 74, clamping mechanism 76 presss from both sides tight fixedly to the circular tubular material, elastic rubber 75 realizes connecting and the function that resets.

Circular sleeve 74 inside evenly be provided with the ball, circular sleeve 74 the inner is provided with loudspeaker form opening, loudspeaker form opening is provided with the mounting groove, the inside anti-skidding line that is provided with of mounting groove, the rubber pad is installed through the mounting groove to loudspeaker form opening, concrete during operation, clamping sleeve 761 can slide through the ball in circular sleeve 74, the realization plays the function of buffering when the roll bending adds man-hour, prevent that the pipe section from taking place the fracture when adding man-hour, bend, loudspeaker form opening can reduce the crease that the pipe section produced when the roll bending adds man-hour, the function of rubber pad quick replacement can be realized to the mounting groove that loudspeaker form opening set up.

Clamping mechanism 76 include clamping sleeve 761, lead screw 762, cone 763, circular section of thick bamboo 764 and press from both sides tight piece 765, clamping sleeve 761 install inside circular sleeve 74, the outer terminal surface of clamping sleeve 761 is provided with the screw through-hole, screw through-hole internal connection has lead screw 762, cone 763 is installed to lead screw 762 inboard, clamping sleeve 761 internally mounted has circular section of thick bamboo 764, evenly be provided with circular through-hole on the circular section of thick bamboo 764, circular through-hole internal connection has the tight piece 765 of clamp, during specific work, lead screw 762 drives cone 763 feed motion, cone 763 extrudees the tight piece 765 of clamp, the tight piece 765 of clamp is tight fixed to inside the clamping of circular tubular product.

The clamping block 765 comprises a jacking seat 7651, a jacking rod 7652, a return spring 7653 and a clamping plate 7654, the jacking rod 7652 is connected with a circular through hole in a sliding fit mode, the jacking seat 7651 is installed at the lower end of the jacking rod 7652, the jacking seat 7651 is of an arc structure with a right-angled trapezoid cross section, the clamping plate 7654 is installed at the upper end of the jacking rod 7652, the clamping plate 7654 is of an arc structure with a rectangular cross section, anti-slip threads are arranged on the outer surface of the clamping plate 7654, the return spring 7653 is installed between the jacking seat 7651 and the circular cylinder, the jacking rod 7652 is driven to feed by the jacking seat 7651 in a squeezing mode during specific work, the jacking rod 7652 drives the clamping plate 7654 to clamp and fix the inside of the circular tube type material, clamping marks generated due to clamping on the outer surface of the circular tube type material are avoided, and the return spring 7653 plays a role in returning.

The upper end of the fixing frame 2 is symmetrically provided with rollers 8, the rollers 8 are located between the two clamping devices 7, the rollers 8 are installed on the fixing frame 2 through roller seats, when the pipe fitting machine works specifically, the pipe fitting rolls on the rollers 8, and the rollers 8 realize the functions of supporting and reducing friction of the pipe fitting.

When the device works, S1, two ends of the cylindrical section are placed on the clamping device 7, the screw 762 is manually adjusted, the screw 762 drives the propping seat 7651 to move in a feeding way, and the propping seat 7651 drives the clamping plate 7654 to clamp and fix the inner side of the cylindrical section;

s2: starting the air cylinder 42, driving the connecting plate 43 to perform feeding motion by the air cylinder 42, and performing roll bending processing on the round pipe section by the bending wheel 45 in the connecting plate 43;

s3: after the step S2 is completed, the motor is started, the motor 31 drives the roller 32 to rotate, the roller 32 drives the slider 34 to reciprocate through the slider rod 33, and the slider 34 drives the rolling wheel 63 to reciprocate in the arc-shaped through hole;

s4: after the step S3 is finished, the motor 31 and the air cylinder 42 are turned off, the lead screw 762 is manually adjusted, and the processed cylindrical section is taken out and the processing is finished.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an aluminum alloy ex-trusions makes roll curved machinery, includes bottom plate (1), mount (2), drive arrangement (3), executes curved device (4), stopper (5), rolling device (6), clamping device (7) and running roller (8), its characterized in that: the bending device is characterized in that a fixing frame (2) is mounted on the bottom plate (1), the fixing frame (2) is of a U-shaped structure, arc-shaped through holes are symmetrically formed in the front side of the upper end of the fixing frame (2), rolling devices (6) are connected to the interior of each arc-shaped through hole in a sliding fit mode, a limiting block (5) is arranged between the two rolling devices (6), the limiting block (5) is mounted on the fixing frame (2), a groove with a semicircular cross section is formed in the rear end face of the limiting block (5), a driving device (3) is arranged inside the fixing frame (2), the driving device (3) is mounted on the bottom plate (1), the left end of the driving device (3) is connected with the rolling devices (6), a bending device (4) is mounted on the rear side of the upper end of the fixing frame (2), clamping devices (7) are; wherein:

the driving device (3) comprises a motor (31), rollers (32), a sliding block rod (33), a sliding block (34), a connecting column (35), a fixing plate (36) and a connecting rod (37), the motor (31) is installed on the bottom plate (1) through a motor base, an output shaft of the motor (31) is connected with the rollers (32), the rollers (32) are installed at the upper end of the bottom plate (1) through a roller frame, the rollers (32) are connected with the roller frame through bearings, an arc-shaped annular groove is formed in the surface of each roller (32), the sliding block rod (33) is arranged at the upper end of each roller (32), the lower end of each sliding block rod (33) is in sliding fit with the arc-shaped annular groove, the sliding block (34) is installed at the upper end of each sliding block rod (34), the connecting column (35) is symmetrically installed at the upper end of each sliding block (34), the connecting column (35), a fixing plate (36) is arranged on the outer side of the connecting rod (37), the fixing plate (36) is of an H-shaped structure, and a rectangular through hole matched with the sliding block (34) is formed in the middle of the fixing plate (36);

the bending device (4) comprises an air cylinder seat (41), an air cylinder (42), a connecting plate (43), a connecting shaft (44) and a bending wheel (45), wherein the air cylinder seat (41) is installed on the fixed frame (2), the air cylinder (42) is installed at the upper end of the air cylinder seat (41), the connecting plate (43) is installed at the top end of the air cylinder (42), the connecting shaft (44) is installed inside the connecting plate (43), the middle part of the connecting shaft (44) is connected with the bending wheel (45) through a bearing, and a semicircular groove is formed in the outer end face of the bending wheel (45);

the rolling device (6) comprises a rotating shaft (61), limiting plates (62) and rolling wheels (63), the rotating shaft (61) is installed in the arc-shaped through hole in a sliding fit mode, the limiting plates (62) are symmetrically arranged on the outer side of the arc-shaped through hole, the limiting plates (62) are installed on the rotating shaft (61), the rolling wheels (63) are installed at the upper end of the rotating shaft (61) through bearings, the lower end of the rotating shaft (61) is connected with the driving device (3) through the bearings, and semicircular grooves are formed in the outer end faces of the rolling wheels (63);

clamping device (7) including bearing frame (71), rotation axis (72), press from both sides tight seat (73), circular sleeve (74), elastic rubber (75) and clamping mechanism (76), bearing frame (71) install on mount (2), bearing frame (71) upper end is connected with rotation axis (72), rotation axis (72) upper end is installed and is pressed from both sides tight seat (73), press from both sides tight seat (73) upper end and install circular sleeve (74), circular sleeve (74) inside is provided with the rectangle recess, the rectangle recess is connected with clamping mechanism (76) through sliding fit's mode, evenly be provided with elastic rubber (75) between clamping mechanism (76) and circular sleeve (74).

2. The machine of claim 1 for roll bending aluminum alloy sections, wherein: the upper end of the fixing frame (2) is symmetrically provided with rollers (8), the rollers (8) are positioned between the two clamping devices (7), and the rollers (8) are arranged on the fixing frame (2) through roller seats.

3. The machine of claim 1 for roll bending aluminum alloy sections, wherein: clamping mechanism (76) including clamping sleeve (761), lead screw (762), cone head (763), circular section of thick bamboo (764) and clamp tight piece (765), clamping sleeve (761) install inside circular sleeve (74), the outer terminal surface of clamping sleeve (761) is provided with the screw through-hole, screw through-hole internal connection has lead screw (762), cone head (763) are installed to lead screw (762) inboard, clamping sleeve (761) internally mounted has circular section of thick bamboo (764), evenly be provided with circular through-hole on circular section of thick bamboo (764), circular through-hole internal connection has clamp tight piece (765).

4. A roll bending machine for manufacturing aluminium alloy sections according to claim 3, characterised in that: the clamping block (765) comprises a jacking seat (7651), a jacking rod (7652), a return spring (7653) and a clamping plate (7654), the jacking rod (7652) is connected with a circular through hole in a sliding fit mode, the jacking seat (7651) is installed at the lower end of the jacking rod (7652), the jacking seat (7651) is of an arc structure with a right-angled trapezoid cross section, the clamping plate (7654) is installed at the upper end of the jacking rod (7652), the clamping plate (7654) is of an arc structure with a rectangular cross section, anti-slip threads are arranged on the outer surface of the clamping plate (7654), and the return spring (7653) is installed between the jacking seat (7651) and the circular cylinder.

5. The machine of claim 1 for roll bending aluminum alloy sections, wherein: circular sleeve (74) inside evenly be provided with the ball circle, shape sleeve (74) the inner is provided with loudspeaker form opening, loudspeaker form opening is provided with the mounting groove, the inside anti-skidding line that is provided with of mounting groove, the rubber pad is installed through the mounting groove to loudspeaker form opening.