CN212598361U

CN212598361U - Two bending die strips and bender of 90 degrees of bending make progress

Info

Publication number: CN212598361U
Application number: CN202020329046.9U
Authority: CN
Inventors: 陈安伟; 陈轩; 孙佳美
Original assignee: Anhui Kingpower Equipment and Mould Manufacture Co Ltd
Current assignee: Anhui Kingpower Equipment and Mould Manufacture Co Ltd
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2021-02-26
Anticipated expiration: 2030-03-16

Abstract

The utility model discloses a double bending die strip and a bending machine which bend upwards by 90 degrees, wherein the double bending die strip comprises a first bending die strip and a second bending die strip, and the second bending die strip is arranged on one side of the first bending die strip in a horizontally movable manner through a second bending die strip translation mechanism; the first bending die strip at least comprises a pressing surface, the front end of the pressing surface is provided with a bending angle, and the bending angle is bent inwards to form an acute angle; one side of the second bending die strip, which is close to the first bending die strip, is provided with a bending surface, the lower end of the bending surface extends downwards to form a hook shape, and the bending machine comprises a bending swing mechanism, a bending turnover mechanism, a lower die mechanism, a conveying mechanism and a side positioning mechanism. The utility model discloses with the die head level setting of first bending die strip, the vertical setting of second bending die strip, can realize that 90 degrees of sheet material when the booth clearance are bent or press from both sides tightly to be bent, improve the efficiency of bending.

Description

Two bending die strips and bender of 90 degrees of bending make progress

Technical Field

The utility model relates to a two mould strips and benders of bending that make progress 90 degrees and bend belongs to the equipment technical field of bending.

Background

At present, labyrinth grooves of a side plate and a top plate of a refrigerator are generally realized by rolling through a rolling mill, and the existing rolling mill has the following defects that (1) the section cannot be changed once determined; (2) the installation and debugging are very complicated, and very professional installation and debugging personnel are needed; (3) the material sheets with too large difference in thickness and material cannot be compatible; (4) there are some differences between the rolled section and the theoretical design. Aiming at the problems, the refrigerator side plate and the refrigerator top plate are bent and folded into the required labyrinth grooves by adopting a bending machine, but the existing bending machine adopts the limitation of a multi-bending mode, so that the upper bending part and the lower bottom plate can not be bent or clamped and bent by 90 degrees in a small gap.

SUMMERY OF THE UTILITY MODEL

To the problem that above-mentioned prior art exists, the utility model provides a 90 degrees two mould strips of bending that make progress bend can realize that 90 degrees when upper portion of bending and lower part bottom plate small gap are bent, improve the efficiency of bending.

In order to achieve the purpose, the invention adopts the following technical scheme: a double-bending die strip bending upwards by 90 degrees comprises a first bending die strip and a second bending die strip, wherein the second bending die strip is horizontally movably arranged on one side of the first bending die strip through a second bending die strip translation mechanism; the first bending die strip at least comprises a pressing surface, the front end of the pressing surface is provided with a bending angle, and the bending angle is bent inwards to form an acute angle; one side of the second bending die strip, which is close to the first bending die strip, is provided with a bending surface, and the lower end of the bending surface extends downwards to form a hook shape.

Preferably, the first bending die strip is of an L-shaped structure, the longitudinal block of the first bending die strip is arranged on the bending machine through a first bending die strip mounting plate, the transverse block of the first bending die strip is a slope with an included angle of 30 degrees, the lower end face of the first bending die strip forms the pressing face, and the front end of the first bending die strip forms the bending angle with an included angle of 30 degrees.

Preferably, the second bending die strip is of a 'one' structure, one end, far away from the first bending die strip, of the upper end face of the second bending die strip is arranged on the bending machine through a second bending die strip mounting plate, one end, close to the first bending die strip, of the lower end face of the second bending die strip is provided with a horizontal groove, and the front end of the second bending die strip is in a hook shape.

Preferably, the pressing surface of the first bending die strip is perpendicular to the bending surface of the second bending die strip.

Preferably, the double-bending die strip further comprises a double-die strip lifting frame, the double-die strip lifting frame comprises a side frame plate and a frame, the frame is arranged in front of the side frame plate, the first bending die strip mounting plate is arranged on the back of the side frame plate, and the second bending die strip mounting plate is arranged below the lower plate of the frame.

Preferably, the second bending die strip is arranged on the second bending die strip mounting plate through a second bending die strip translation mechanism; the second bending die strip translation mechanism comprises a first swing cylinder, a second bending die strip swing arm, a support frame and a horizontal synchronizing shaft, the first swing cylinder is obliquely arranged at the front part of the side frame plate and is connected with the swing arm of the second bending die strip through a piston, the lower plate of the frame is provided with a movable hole at the position corresponding to the second bending mould strip swing arm, the second bending mould strip swing arm passes through the movable hole on the lower plate of the frame and is connected with the top end of a second bending mould strip mounting plate erected at the bottom of the double-mould strip lifting frame, the second bending die strip is arranged at the bottom end of the second bending die strip mounting plate, two ends of the horizontal synchronizing shaft are respectively connected with the second bending die strip swing arm, the second swing cylinder is installed on the front portion of the side frame plate through the supporting frame, and corresponds to the second bending die strip installing plate.

The invention also provides a bending machine adopting any one of the double-bending die strips, which comprises a bending swing mechanism, a bending turnover mechanism, a lower die mechanism, a conveying mechanism and a side positioning mechanism, wherein the bending swing mechanism, the bending turnover mechanism and the lower die mechanism are erected on a bending bottom plate, the bending bottom plate is erected on a machine base through a bending translation mechanism, the side positioning mechanism is installed on the machine base through a positioning translation mechanism, the conveying mechanism is erected on the machine base through a conveying support frame, the positioning translation mechanism and the bending translation mechanism are respectively and symmetrically erected on the front side and the rear side of the machine base, the bending swing mechanism, the bending turnover mechanism and the lower die mechanism are installed on a side frame plate, the side frame plate is provided with an arc-shaped chute, the side frame plate is vertically erected on the left side and the right side of the bending bottom plate, and the bending swing mechanism is erected above the lower die mechanism, the bending turnover mechanism is erected at the rear side of the lower die mechanism, the conveying mechanism is erected at the front side of the lower die mechanism, and the side positioning mechanism is erected at the front side of the conveying mechanism; the bending swing mechanism further comprises a double-die strip lifting mechanism, and two sides of the double-die strip lifting frame are mounted on the upper portion of the side frame plate through the double-die strip lifting mechanism, so that the second bending die strip can horizontally move relative to the first bending die strip.

Preferably, the lower die mechanism comprises a lower die frame plate and a lower die strip, the bottom of the lower die frame plate is vertically arranged on the bending bottom plate, the lower die strip is arranged on the lower die frame plate, two sides of the lower die frame plate are respectively connected with the lower portions of the two side frame plates, the lower die strip is lifted by the double-die strip lifting cylinder, and the first bending die strip and the second bending die strip can be pressed on the lower die frame plate.

Preferably, the bending turnover mechanism comprises a turnover die strip, a die strip turnover frame and a turnover driving mechanism, the die strip turnover frame is rotatably erected in the arc-shaped sliding groove in the side frame plate, the turnover die strip is installed on the die strip turnover frame, and the die strip turnover frame is driven to turn over by the turnover driving mechanism.

Preferably, the arc-shaped sliding blocks capable of rotating along the arc-shaped sliding grooves are installed at the two ends of the die strip turnover frame, the arc-shaped sliding blocks and the die strip turnover frame are synchronously turned over, each arc-shaped sliding block is provided with an arc-shaped rack, the turning driving mechanism comprises a turning driving motor, a speed reducer connected with the turning driving motor and a gear connected with the speed reducer, the gear is meshed with the arc-shaped rack, the two ends of the arc-shaped sliding grooves are provided with limit blocks, the turning driving motor drives the arc-shaped racks to rotate, the arc-shaped sliding blocks are enabled to rotate along the arc-shaped sliding grooves, and therefore the die strip turnover frame is.

The utility model has the advantages that: the utility model horizontally arranges the die heads of the first bending die strips and vertically arranges the second bending die strips, so that 90-degree bending or clamping bending of the plate in small gaps can be realized, and the bending efficiency is improved; simultaneously with 90 degrees bending or press from both sides the combination of the bending method of pressing from both sides tight bending and CNC bender, satisfy the requirement of bending of multiple cross-section, can simplify the structure of CNC bender, reduce the action of CNC bender, promote line body efficiency.

Drawings

FIG. 1 is a schematic structural view of the bending swing mechanism of the present invention without a lifting cylinder;

FIG. 2 is an enlarged schematic view of the double bend die strip at A in FIG. 1;

fig. 3 is a schematic structural view of the bending machine of the present invention;

fig. 4 is a right side view of the bending machine of the present invention;

FIG. 5 is an enlarged schematic view at B in FIG. 4;

FIG. 6 is a schematic structural view of the bending machine with the bending swing mechanism, the bending turnover mechanism, the lower die mechanism, the bending bottom plate and the side frame plate removed;

FIG. 7 is a 90 degree bend process with small sheet gap;

FIG. 8 is a clamping bending process of small gap between the plates;

in the figure: 1. a machine base, 2, a bending swing mechanism, 201, a first bending die strip, 202, a second bending die strip, 203, a first bending die strip mounting plate, 204, a side frame plate, 205, a frame, 206, a double-die strip lifting cylinder, 207, a double-die strip slide rail, 208, a second bending die strip mounting plate, 209, a first swing cylinder, 210, a second swing cylinder, 211, a second bending die strip swing arm, 212, a support frame, 213, a horizontal synchronizing shaft, 3, a bending turnover mechanism, 301, a turnover die strip, 302, a die strip turnover frame, 303, a turnover driving mechanism, 304, an arc-shaped sliding block, 305, an arc-shaped rack, 306, a gear, 4, a lower die mechanism, 401, a lower die strip, 402, a lower die frame plate, 5, a conveying mechanism, 501, a conveying support plate, 502, a conveying rack belt, 503, a belt pulley, 504, a conveying driving mechanism, 505, a conveying support frame, 6, a side positioning mechanism, 601. The side positioning device comprises a side positioning bottom plate, 602, a side positioning support, 603, a side positioning plate, 604, a side positioning mounting plate, 605, a side positioning block, 606, an adjusting block, 607, a base plate, 608, a scrubbing brush, 7, a positioning translation mechanism, 8, a bending translation mechanism, 9, a bending bottom plate, 10, a side frame plate, 1001, an arc-shaped sliding groove, 11 and a plate.

Detailed Description

The technical solutions in the implementation of the present invention will be clear from the following description and accompanying drawings, and the described embodiments are only some embodiments, not all embodiments, of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 and 2, a double bending die strip bending upward by 90 degrees includes a first bending die strip 201 and a second bending die strip 202, and the second bending die strip 202 is horizontally movably disposed on one side of the first bending die strip 201 by a second bending die strip translation mechanism; the first bending die strip 201 at least comprises a pressing surface, the front end of the pressing surface is provided with a bending angle, and the bending angle is bent inwards to form an acute angle; one side of the second bending die strip 202, which is close to the first bending die strip 201, is provided with a bending surface, and the lower end of the bending surface extends downwards to form a hook shape. Specifically, the double-bending die strip further comprises a double-die strip lifting frame, the double-die strip lifting frame comprises a side frame plate 204 and a frame 205, the frame 205 is arranged in front of the side frame plate 204, the first bending die strip mounting plate 203 is arranged on the back of the side frame plate 204, and the second bending die strip mounting plate 208 is arranged below the lower plate of the frame 205.

The utility model discloses in, first bending die strip 201 is L type structure, the vertical piece of first bending die strip 201 is located on the bender through first bending die strip mounting panel 203, the horizontal piece of first bending die strip 201 is the slope of 30 degrees contained angles, and lower terminal surface forms the holding-down surface, front end 30 degrees contained angles form the angle of bending.

The utility model discloses in, the second mould strip 202 of bending is "one" type structure, the one end that first mould strip 201 of bending was kept away from to the up end of second mould strip 202 of bending is passed through the second mould strip mounting panel 208 of bending and is set up on the bender, the lower terminal surface of second mould strip 202 of bending is close to the one end of first mould strip 201 of bending and has been seted up the groove of crouching, and the front end forms hook-like.

Specifically, the pressing surface of the first bending die bar 201 is perpendicular to the bending surface of the second bending die bar 202.

The utility model discloses in, the mould strip that bends of second is located through the mould strip translation mechanism that bends of second on the mould strip mounting panel 208 that bends, mould strip translation mechanism that bends of second includes first swing cylinder 209, second swing cylinder 210, the mould strip swing arm 211 that bends of second, support frame 212 and horizontal synchronizing shaft 213. In this embodiment, there are two first swing cylinders 209, four second swing cylinders 210, and two second bending die bar swing arms 211. Each first swing cylinder 209 is obliquely arranged at the front part of the side frame plate 204, each first swing cylinder 209 is correspondingly connected with a second bending die strip swing arm 211 through a piston, a movable hole is arranged at the position of the lower plate of the frame 205 corresponding to the second bending die strip swing arm 211, the second bending die strip swing arm 211 passes through the movable hole on the lower plate of the frame 205 and is connected with the top end of a second bending die strip mounting plate 208 erected at the bottom of the double-die strip lifting frame, the second bending die strip 202 is arranged at the bottom end of the second bending die strip mounting plate 208, two ends of the horizontal synchronizing shaft 213 are respectively connected with the second bending die strip swing arm 211, the first swing cylinder 209 drives the second bending die strip swing arm 211 to move, so that the second bending die strip 202 can move back and forth relative to the first bending die strip 201, and the second swing cylinder 210 is arranged at the front part of the side frame plate 204 through a support frame, the second swing cylinder 210 corresponds to the second bending die bar mounting plate 208, so that the second swing cylinder 210 provides power for the translation of the second bending die bar 202.

As shown in fig. 3 to 6, a bending machine using any one of the above-mentioned double bending die strips comprises a bending swing mechanism 2, a bending turnover mechanism 3, a lower die mechanism 4, a conveying mechanism 5 and a side positioning mechanism 6, and specifically, the bending swing mechanism 2, the bending turnover mechanism 3 and the lower die mechanism 4 are erected on a bending bottom plate 9, the bending bottom plate 9 is erected on a machine base 1 through a bending translation mechanism 8, the side positioning mechanism 6 is installed on the machine base 1 through a positioning translation mechanism 7, the conveying mechanism 5 is erected on the machine base 1 through a conveying support frame 505, the positioning translation mechanism 6 and the bending translation mechanism 7 are respectively erected on the front side and the rear side of the machine base 1 symmetrically, the bending swing mechanism 2, the bending turnover mechanism 3 and the lower die mechanism 4 are installed on a side frame plate 10, and the side frame plate 10 is provided with an arc-shaped chute 1001, the side frame plates 10 are vertically erected on the left side and the right side of the bending bottom plate 9, the bending swing mechanism 2 is erected above the lower die mechanism 4, the bending turnover mechanism 3 is erected on the rear side of the lower die mechanism 4, the conveying mechanism 5 is erected on the front side of the lower die mechanism 4, and the side positioning mechanism 6 is erected on the front side of the conveying mechanism 5. Particularly, conveying mechanism 5 includes transport support plate 501, conveying rack belt 502, carries actuating mechanism 504, transport support plate 501 has two, two transport support plate 501 is parallel to each other and vertical erects on carrying support frame 505, the both ends of carrying support plate 501 are equipped with belt pulley 503 respectively, conveying rack belt 502 erects at two belt pulleys 503, conveying rack belt 502 includes the belt and attached rack under the belt, actuating mechanism is including carrying driving motor, with the reduction gear of carrying driving motor to be connected, with retarder connection's drive pulley and drive belt, drive pulley passes through the belt pulley of drive belt and transport support plate one end, carries driving motor to pass through drive belt driving pulley and rotates, carries driving motor to pass through servo motor and realizes. Specifically, the side positioning mechanism 6 includes a side positioning base plate 601, a side positioning plate 603 installed on the side positioning base plate 601 through a side positioning bracket 602, and a side positioning block 605 installed on the side positioning plate 603 through a side positioning mounting plate 604, a plurality of side positioning adjusting blocks 606 are further installed on the side positioning plate 603, each adjusting block 606 is connected with a backing plate 607 through an adjusting screw, a plate brush 608 is installed on the backing plate 607 through a cushion block, four side positioning blocks 605 are provided, and each side positioning block 605 corresponds to one side positioning mounting plate 604. Particularly, location translation mechanism 7, the translation mechanism 8 of bending's structure is the same completely, all includes the translation guide rail of installing on frame 1 through the vertical rack board of establishhing, installs the translation motor on frame 1, through translation drive mechanism and the translation lead screw that translation motor is connected and the translation silk braid with the translation lead screw meshing, the rack board has two, and every translation guide rail corresponds a rack board. Specifically, the side positioning bottom plate 601 is arranged on a translation guide rail of the positioning translation mechanism 7 through a side positioning bottom plate sliding block arranged at the bottom to move back and forth, when a translation motor of the positioning translation mechanism 7 drives a translation screw rod of the positioning translation mechanism 7 to drive the side positioning mechanism 6 to move back and forth, the bending bottom plate 9 is arranged on a translation guide rail of the bending translation mechanism 8 to move back and forth through a bending bottom plate sliding block arranged at the bottom, and when a translation motor of the bending translation mechanism 8 drives a bending translation screw rod of the bending translation mechanism 8, the bending swing mechanism 2, the bending turnover mechanism 3 and the lower die mechanism 4 on the bending bottom plate 9 are driven to move back and forth; the translation transmission mechanism is realized through a rack belt, and the translation motor is realized through a servo motor.

The utility model discloses in, swing mechanism 2 of bending includes as above first bending die strip 201 and second bending die strip 202, first bending die strip mounting panel 203, second bending die strip mounting panel 208, bimodulus strip crane and second bending die strip translation mechanism, the both sides of bimodulus strip crane are passed through bimodulus strip elevating system and are installed on the upper portion of side frame board 10 for the second bending die strip 202 can be for first bending die strip 201 horizontal migration. Specifically, the second bending die strip mounting plate 208 is slidably connected to the bottom surface of the lower plate of the frame 205 through a guide assembly, the front end of the lower plate of the frame 205 is provided with a limit block, the guide assembly includes a fixing plate, a guide pillar and a guide sleeve, the guide pillar is fixed to the bottom surface of the lower plate of the frame 205 through the fixing plate, and the guide sleeve is fixed to the second bending die strip mounting plate 208 through a set screw. The first bending die strip mounting plate 203 is further provided with a limit screw, so that the second bending die strip 202 horizontally moves forwards and backwards between the limit screw and the limit block. Specifically, the bending swing mechanism 2 further comprises a dual-mode bar lifting mechanism, the dual-mode bar lifting mechanism comprises a dual-mode bar lifting cylinder 206 and a dual-mode bar sliding rail 207, the number of the dual-mode bar lifting cylinders 206 is three, the number of the dual-mode bar sliding rails 207 is two, each dual-mode bar lifting cylinder 206 is installed on the upper plate of the frame 205 through a piston, the side plate of the frame 205 is installed on the dual-mode bar sliding rail 207 through a dual-mode bar sliding block, the dual-mode bar sliding rail 207 is vertically installed on the side frame plate 10, and the dual-mode bar lifting cylinder 206 drives the dual-mode bar lifting frame to lift along the vertical dual-mode bar sliding rail 207, so that the first bending die bar 201 and the second bending die bar 202 are driven to.

The utility model discloses in, lower mould mechanism 4 includes that the bottom is vertical installs lower mould frame plate 402 on bottom plate 9 of bending and installs lower mould strip 401 on lower mould frame plate 402, lower mould frame plate 402's both sides respectively with the sub-unit connection of two side frame plates 10, go up and down through bimodulus strip lift cylinder 206, first bending mould strip 201 can descend and press sheet material 11 on lower mould frame plate 402.

The utility model discloses in, bending tilting mechanism 3 includes upset mould strip 301, mould strip roll-over stand 302 and upset actuating mechanism 303, mould strip roll-over stand 302 rotates to erect in the convex spout 1001 on the side frame board 1001, upset mould strip 301 is installed on mould strip roll-over stand 302, mould strip roll-over stand 302 is overturned by the drive of upset actuating mechanism 303, and upset actuating mechanism is realized by motor, reduction gear, rack, gear jointly. Specifically, the arc-shaped sliding blocks 304 capable of rotating along the arc-shaped sliding grooves 1001 are installed at the two ends of the mold strip turning frame 302, the arc-shaped sliding blocks 304 and the mold strip turning frame 302 are turned synchronously, each arc-shaped sliding block 304 is provided with an arc-shaped rack 305, the turning driving mechanism 303 comprises a turning driving motor, a speed reducer connected with the turning driving motor and a gear 306 connected with the speed reducer, the gear 306 is meshed with the arc-shaped rack 305, a limiting block is arranged at the lower port of the arc-shaped sliding groove 1001, the turning driving motor drives the arc-shaped rack 305 to rotate, the arc-shaped sliding blocks 304 are made to rotate along the arc-shaped sliding grooves 304, and therefore the mold strip turning frame 243.

In the present invention, the 90-degree bending process shown in fig. 7 is as follows: after the plate 11 is conveyed to the station through the conveying mechanism 5, the side positioning mechanism 6 moves back to finish positioning, the first bending die strip 201 of the bending swing mechanism 2 lowers the pressure of the plate 11 through the dual-die strip lifting mechanism, the overturning die strip 301 of the bending overturning mechanism 3 rotates 90 degrees under the driving of the reducer of the overturning driving motor to finish bending, the bending returns, the first bending die strip 201 is lifted through the dual-die strip lifting mechanism, and the plate 11 is conveyed out of the bending machine. The pinch-bending process as shown in fig. 8: after the plate 11 is conveyed to the station through the conveying mechanism 5, the side positioning mechanism 6 moves back to finish positioning, the second bending die strip 202 of the bending swing mechanism 2 descends through the double-die strip lifting mechanism, the second bending die strip 202 moves back and forth through the first swing cylinder 209 of the second bending die strip translation mechanism to clamp the angle of the plate 11 from 45 degrees to 0 degree, after clamping and bending are finished, the first swing cylinder 209 moves back, the second bending die strip 202 is lifted through the double-die strip lifting mechanism, and the plate 11 is conveyed out of the bending machine.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.

Claims

1. The double-bending die strip bent upwards by 90 degrees is characterized by comprising a first bending die strip (201) and a second bending die strip (202), wherein the second bending die strip (202) is horizontally movably arranged on one side of the first bending die strip (201) through a second bending die strip translation mechanism; the first bending die strip (201) at least comprises a pressing surface, the front end of the pressing surface is provided with a bending angle, and the bending angle is bent inwards to form an acute angle; one side of the second bending die strip (202) close to the first bending die strip (201) is provided with a bending surface, and the lower end of the bending surface extends downwards to form a hook shape.

2. The double bending die strip bending upwards by 90 degrees according to claim 1, wherein the first bending die strip (201) is of an L-shaped structure, a longitudinal block of the first bending die strip (201) is arranged on a bending machine through a first bending die strip mounting plate (203), a transverse block of the first bending die strip (201) is a slope with an included angle of 30 degrees, a lower end face forms the pressing face, and a front end 30-degree included angle forms the bending angle.

3. The double bending die strip bending upwards by 90 degrees according to claim 2, wherein the second bending die strip (202) is of a 'one' type structure, one end, far away from the first bending die strip (201), of the upper end face of the second bending die strip (202) is arranged on a bending machine through a second bending die strip mounting plate (208), one end, close to the first bending die strip (201), of the lower end face of the second bending die strip (202) is provided with a horizontal groove, and the front end of the second bending die strip forms a hook shape.

4. The double bending die strip bending upwards by 90 degrees according to claim 3, wherein the pressing surface of the first bending die strip (201) is perpendicular to the bending surface of the second bending die strip (202).

5. The double bending die strip bending upwards by 90 degrees according to claim 4, further comprising a double die strip lifting frame, wherein the double die strip lifting frame comprises a side frame plate (204) and a frame (205), the frame (205) is arranged in front of the side frame plate (204), the first bending die strip mounting plate (203) is arranged on the back of the side frame plate (204), and the second bending die strip mounting plate (208) is arranged below the lower plate of the frame (205).

6. The double bending die strip bending upward by 90 degrees according to claim 5, wherein the second bending die strip is provided on the second bending die strip mounting plate (208) by a second bending die strip translation mechanism; the second bending die strip translation mechanism comprises a first swing cylinder (209), a second swing cylinder (210), a second bending die strip swing arm (211), a support frame (212) and a horizontal synchronizing shaft (213), wherein the first swing cylinder (209) is obliquely arranged at the front part of the side frame plate (204), the first swing cylinder (209) is connected with the second bending die strip swing arm (211) through a piston, a movable hole is formed in the position, corresponding to the second bending die strip swing arm (211), of the lower plate of the frame (205), the second bending die strip swing arm (211) penetrates through the movable hole in the lower plate of the frame (205) to be connected with the top end of a second bending die strip mounting plate (208) erected at the bottom of the double-die strip crane, the second bending die strip (202) is arranged at the bottom end of the second bending die strip mounting plate (208), and the two ends of the horizontal synchronizing shaft (213) are respectively connected with the second bending die strip swing arm (211), the second swing cylinder (210) is installed in the front of the side frame plate (204) through a support frame, and the second swing cylinder (210) corresponds to the second bending die strip installation plate (208).

7. A bending machine adopting the double-bending die strip as defined in claim 6, further comprising a bending swing mechanism (2), a bending turnover mechanism (3), a lower die mechanism (4), a conveying mechanism (5) and a side positioning mechanism (6), wherein the bending swing mechanism (2), the bending turnover mechanism (3) and the lower die mechanism (4) are erected on a bending bottom plate (9), the bending bottom plate (9) is erected on the machine base (1) through a bending translation mechanism (8), the side positioning mechanism (6) is installed on the machine base (1) through a positioning translation mechanism (7), the conveying mechanism (5) is erected on the machine base (1) through a conveying support frame (505), the positioning translation mechanism (7) and the bending translation mechanism (8) are respectively and symmetrically erected on the front side and the rear side of the machine base (1), and the bending swing mechanism (2) is arranged on, The bending turnover mechanism (3) and the lower die mechanism (4) are arranged on a side frame plate (10), the bending swing mechanism (2) is erected above the lower die mechanism (4), the bending turnover mechanism (3) is erected on the rear side of the lower die mechanism (4), the conveying mechanism (5) is erected on the front side of the lower die mechanism (4), the side positioning mechanism (6) is erected on the front side of the conveying mechanism (5), the side frame plate (10) is vertically erected on the left side and the right side of the bending bottom plate (9), and the side frame plate (10) is provided with a circular arc-shaped sliding groove (1001); the bending swing mechanism (2) further comprises a double-die-strip lifting mechanism, and two sides of the double-die-strip lifting frame are mounted on the upper portion of the side frame plate (10) through the double-die-strip lifting mechanism, so that the second bending die strip (202) can horizontally move relative to the first bending die strip (201).

8. A machine according to claim 7, wherein the lower die mechanism (4) comprises a lower die frame plate (402) mounted with its bottom portion vertically on the bending base plate (9) and a lower die strip (401) mounted on the lower die frame plate (402), the two sides of said lower die frame plate (402) being connected to the lower portions of the two side frame plates (10), respectively.

9. The bending machine according to claim 7, wherein the bending turnover mechanism (3) comprises a turnover die strip (301), a die strip turnover frame (302) and a turnover driving mechanism (303), the die strip turnover frame (302) is rotatably erected in a circular arc-shaped sliding groove (1001) on the side frame plate (10), the turnover die strip (301) is installed on the die strip turnover frame (302), and the die strip turnover frame (302) is driven to turn over by the turnover driving mechanism (303).

10. The bending machine according to claim 9, wherein arc-shaped sliding blocks (304) capable of rotating along arc-shaped sliding grooves (1001) are mounted at two ends of the die strip turning frame (302), the arc-shaped sliding blocks (304) and the die strip turning frame (302) synchronously turn, an arc-shaped rack (305) is mounted on each arc-shaped sliding block (304), the turning driving mechanism (303) comprises a turning driving motor, a speed reducer connected with the turning driving motor and a gear (306) connected with the speed reducer, the gear (306) is meshed with the arc-shaped rack (305), and limiting blocks are arranged at two ends of each arc-shaped sliding groove (1001) to enable the arc-shaped sliding blocks (304) to rotate along the arc-shaped sliding grooves (1001).