Large steel bending device and bending method thereof

Abstract

The application discloses a large steel bending device and a bending method thereof, and belongs to the technical field of plate processing. The device comprises a bending machine main body. The lower end of an upper die outer frame is provided with an upper die quick adjusting mechanism. The front end of the upper die quick adjusting mechanism is provided with an upper die locking mechanism for locking the position of the upper die. The upper end of the front end of the bending machine main body is fixedly provided with an adjustable lower die mechanism for adjusting the wear position of the lower die. The upper die quick adjusting drive assembly can quickly replace a row of upper die main body assemblies, and the interval adjusting assembly can adjust the interval of the upper die main body assemblies to meet the different bending requirements of the plate. The upper die locking mechanism can lock the position of the upper die main body assembly and share the pressure borne by the upper die quick adjusting drive assembly. The cooperation of the flatness detection assembly and the wear position adjusting assembly can timely adjust the wear position of the wear position adjusting assembly, so as to ensure the bending precision.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plate processing, in particular to a large steel bending device and a bending method thereof. BACKGROUND

[0002] A large plate bending machine is a processing equipment for large-size plates, mainly used in metal product manufacturing, construction, shipbuilding and other industries. It can complete bending through hydraulic machinery and upper and lower molds, so that the workpiece reaches the required bending angle and shape.

[0003] For example, the patent with publication number CN113477758A discloses a large plate bending machine. However, this equipment uses a row of upper mold clamps to fix the upper mold. Since different upper molds may be needed to complete different bending processes for the same plate during large steel bending, it is inconvenient to replace a row of upper molds, which takes a long time and is not easy to meet the processing requirements. In addition, a locking device is needed to lock the position of the upper mold. The lower mold of the existing large steel bending equipment usually uses two symmetrical circular shafts to bear the parts to be processed. The circular shafts are prone to wear.

[0004] Therefore, the present application designs a large steel bending device and a bending method thereof to solve the above problems. SUMMARY

[0005] In view of the above shortcomings of the prior art, the present application provides a large steel bending device and a bending method thereof.

[0006] To achieve the above purpose, the present application realizes the following technical solutions:

[0007] A large steel bending device, comprising a bending machine main body;

[0008] Two groups of bending cylinders are fixedly installed on the upper ends of the front of the bending machine main body in a left-right symmetrical manner, and the output ends of the bending cylinders are fixedly connected with the upper mold outer frame;

[0009] The lower end of the upper mold outer frame is provided with an upper mold quick adjusting mechanism for quickly replacing a row of upper molds;

[0010] The front end of the upper mold quick adjusting mechanism is provided with an upper mold locking mechanism for locking the position of the upper mold;

[0011] An adjustable lower mold mechanism for adjusting the wear position of the lower mold is fixedly installed above the front end of the bending machine main body;

[0012] The upper die quick adjusting mechanism comprises an upper die main body assembly and an upper die quick adjusting drive assembly, and the upper die main body assembly and the upper die quick adjusting drive assembly are installed at the lower end of the upper die outer frame and are fixedly connected.

[0013] The adjustable lower die mechanism comprises a wear position adjusting assembly, a spacing adjusting assembly and a flatness detecting assembly, the wear position adjusting assembly is fixedly installed above the front end of the bending machine main body, the spacing adjusting assembly is installed at the lower end of the wear position adjusting assembly, and the flatness detecting assembly is installed on one side of the wear position adjusting assembly.

[0014] Further, the upper die quick adjusting drive assembly comprises an upper die adjusting motor, drive rollers, a drive belt and drive tracks, the upper die adjusting motor is fixedly installed on the back of the upper die outer frame, two groups of drive rollers are rotatably installed inside the upper die outer frame in a left-right symmetrical manner, the outer side of the drive roller is provided with a drive track for sliding connection with the drive belt, the drive track is fixedly connected with the inside of the upper die outer frame, the output end of the upper die adjusting motor is fixedly connected with one group of drive rollers through the upper die outer frame, and the drive roller is in transmission connection with the drive belt.

[0015] The upper die main body assembly comprises an upper die clamp, a clamp slot and an upper die main body, the clamp slot is formed in the upper die clamp for sliding connection with the upper die main body, the upper die clamp is fixedly connected with the drive belt and is in limiting sliding connection with the drive track, a plurality of upper die clamps are uniformly arranged in the horizontal direction, and two groups of upper die clamps are symmetrically arranged at the upper and lower ends of the drive track.

[0016] Further, the upper die locking mechanism comprises a clamp locking assembly, an upper die limiting assembly and a gravity self-locking assembly, the clamp locking assembly is installed at the lower end of the upper die outer frame and is in locking connection with the upper die clamp, the upper die limiting assembly is installed on the right side of the lower end of the upper die outer frame and is in contact connection with the upper die clamp, two groups of gravity self-locking assemblies are fixedly installed on the front of the upper die outer frame, and the two groups of gravity self-locking assemblies are respectively located above the clamp locking assembly and the upper die limiting assembly and are in locking connection with the clamp locking assembly and the upper die limiting assembly.

[0017] Further, the clamp locking assembly comprises a clamp locking hole, a frame opening, a clamp locking bolt and a connecting rod, the clamp locking hole is formed in the upper die clamp for sliding connection with the clamp locking bolt, the frame openings are formed in the front and rear ends of the upper die outer frame and are in sliding connection with the clamp locking bolt, one clamp locking bolt is arranged in each frame opening, and the front ends of all the clamp locking bolts are fixedly connected with the connecting rod.

[0018] Further, the upper die limiting assembly comprises a limiting rod and a limiting rod slot, and the front and rear ends of the right side of the outer frame of the upper die are provided with the limiting rod slot in communication and the limiting rod slot is in sliding connection with the limiting rod in combination.

[0019] Further, the two groups of gravity self-locking assemblies comprise a rotating shaft and a gravity self-locking rod, the two groups of rotating shafts are fixedly connected with the front face of the outer frame of the upper die, one group of rotating shafts is located above the frame opening, and the other group of rotating shafts is located above the limiting rod slot, the gravity self-locking rod is in rotating connection with the rotating shaft, and the two groups of gravity self-locking rods are respectively in locking connection with the connecting rod and the limiting rod.

[0020] Further, the wear position adjusting assembly comprises a fixed lower die seat, a lower die seat slot, a rolling die, a wear adjusting motor, a limiting sliding groove and a limiting guide rail, two groups of fixed lower die seats are symmetrically fixed and installed above the front end of the main body of the bending machine, the fixed lower die seat is provided with the lower die seat slot in limiting sliding connection with the rolling die, the rolling die is installed in the lower die seat slot, the wear adjusting motor is fixedly installed at the left end of the fixed lower die seat, the output end of the wear adjusting motor is in fixed connection with the rolling die, a plurality of limiting sliding grooves for sliding connection with the limiting guide rail in combination are symmetrically fixed and installed at the lower end of the fixed lower die seat in the horizontal direction, and the limiting guide rail is fixedly installed above the front end of the main body of the bending machine.

[0021] Further, the distance adjusting assembly comprises a distance adjusting inclined slot, a distance adjusting sliding block, a distance adjusting cylinder, a distance locking rack, a distance locking bolt, a locking bolt sliding shaft and a spring, the lower end of the middle part of each of the two fixed lower die seats is provided with the distance adjusting inclined slot in sliding connection with the distance adjusting sliding block in combination, the distance adjusting cylinder is fixedly installed at the lower end of the middle part of the fixed lower die seat, the output end of the distance adjusting cylinder is in fixed connection with the distance adjusting sliding block, the distance locking rack is fixedly installed at the rear side of the lower end of the fixed lower die seat, the rear end of the distance adjusting sliding block is fixedly installed with the locking bolt sliding shaft, the distance locking bolt is in sliding connection with the locking bolt sliding shaft and in locking connection with the distance locking rack, the upper end of the distance locking bolt is in sliding connection with the fixed lower die seat, the lower end of the distance locking bolt is in sliding connection with the lower end of the main body of the bending machine, the spring is located outside the locking bolt sliding shaft, one end of the spring is in fixed connection with the distance adjusting sliding block, and the other end of the spring is in fixed connection with the distance locking bolt.

[0022] Further, the flatness detection assembly comprises a detector driving motor, a driving screw, a driving screw seat, a detector main body and a length adjusting sleeve assembly, the driving screw seat is fixedly installed at the left and right ends of the back of the fixed lower die seat, the driving screw is located between the driving screw seats and the two ends of the driving screw are rotationally connected with the driving screw seats, the detector driving motor is fixedly installed on the driving screw seat at one end and the output end of the detector driving motor is fixedly connected with the driving screw, the detector main body is threadedly connected with the driving screw and is slidingly connected with the rolling dies, the length adjusting sleeve assembly is fixedly installed on the detector main body between the two rolling dies, the two sleeve assemblies of the length adjusting sleeve assembly are fixedly connected with the detector main body at the ends away from each other, and the two sleeve assemblies of the length adjusting sleeve assembly are slidingly connected with each other at the ends close to each other.

[0023] The application further provides a use method of the large steel bending device, comprising the following steps:

[0024] Step one, rotate the gravity self-locking rod around the rotating shaft to release the locking effect of the gravity self-locking rod on the connecting rod and the limiting rod, then pull the connecting rod and the limiting rod to pull out the clamp locking pins in the clamp locking holes and the frame openings at the lower end of the driving track and the limiting rods in the limiting rod slot, thereby releasing the locking effect on the upper die clamp, starting the upper die adjusting motor, the upper die adjusting motor moves the driving belt in the driving track through the driving roller, so that the position of the row of upper die main bodies at the upper end of the driving track is exchanged with the position of the original row of upper die main bodies at the lower end of the driving track, when the row of upper die clamps and upper die main bodies at the lower end of the driving track move away from the lower end of the driving track, insert the limiting rod into the limiting rod slot and loosen the gravity self-locking rod at the upper end of the limiting rod, so that the gravity self-locking rod rotates around the rotating shaft to the position of locking the limiting rod under the action of gravity, the row of upper die clamps and upper die main bodies to be replaced continue to move until the rightmost upper die clamp is blocked by the limiting rod to determine the position of the upper die clamps and upper die main bodies to be replaced, at this time, insert the clamp locking pins into the connected clamp locking holes and frame openings to lock the position of the upper die clamps and upper die main bodies, loosen the gravity self-locking rod to lock the position of the connecting rod under the action of gravity, and the replacement work of the upper die main body assembly is completed.

[0025] Step two, detecting the wear of the rolling die surface, then starting the detector drive motor, the detector drive motor drives the driving screw to rotate and drives the detector main body to move on the rolling die in the horizontal direction, so as to detect the wear of the contact part between the rolling die and the steel plate, if the bending precision is reduced due to the wear of the rolling die, the wear adjusting motor connected with the worn rolling die is started, the wear adjusting motor drives the rolling die to rotate in the slot of the lower die seat, so that the position of the unworn part of the rolling die replaces the position of the worn part of the wear adjusting motor; the interval adjusting cylinder is started, when the output end of the interval adjusting cylinder extends, the interval adjusting cylinder drives the interval adjusting slider to move to the right in the interval adjusting inclined groove, under the drive of the interval adjusting slider, the two fixed lower die seats move towards each other on the limiting guide rail through the limiting sliding groove, so that the interval between the two fixed lower die seats is reduced, and the length of the length adjusting sleeve assembly is reduced, in the process of moving to the right of the interval adjusting slider, the interval adjusting slider drives the interval locking bolt to move to the right through the locking bolt sliding shaft, the rear end of the interval locking bolt is blocked in the right movement of the interval locking rack, the interval locking rack provides a forward movement thrust to the interval locking bolt, the spring is compressed, until the interval locking bolt moves to the next tooth groove of the interval locking rack, the spring resets the interval locking bolt to move backward until the rear end of the interval locking bolt is attached to the interval locking rack, when the interval adjusting cylinder stops moving, the interval locking rack locks the position of the interval locking bolt, so that the interval between the two fixed lower die seats is fixed;

[0026] Step three, place the steel plate to be processed on the rolling die, align the bending line with the upper die main body, start the bending cylinder, the bending cylinder drives the upper die main body of the upper die fast adjusting mechanism of the upper die outer frame to move in the vertical direction to bend the steel plate.

[0027] Beneficial effects

[0028] The present application can meet the different bending requirements of the plate material by quickly replacing a row of upper die main body assemblies through the upper die fast adjusting drive assembly and adjusting the interval of the upper die main body assemblies through the interval adjusting assembly, which not only facilitates the operation of replacing the upper die, but also shortens the time spent on replacing the upper die, greatly facilitating the bending operation of the plate material.

[0029] The present application can not only lock the position of the upper die main body assembly to prevent the upper die main body assembly from deviating, but also share the pressure borne by the upper die fast adjusting drive assembly, so that the upper die fast adjusting drive assembly is not easy to be damaged.

[0030] The present application can timely adjust the contact position between the wear position adjusting assembly and the plate to be processed through the cooperation of the flatness detection assembly and the wear position adjusting assembly, so as to ensure the bending precision of the steel plate. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0032] Figure 1 A large steel bending device main structure perspective view of the present application Figure 1 ;

[0033] Figure 2 A large steel bending device structure front view of the present application

[0034] Figure 3 A structure left view of the present application

[0035] Figure 4 A large steel bending device main structure perspective view of the present application Figure 2 ;

[0036] Figure 5 A B-B direction sectional view along Figure 3 ;

[0037] Figure 6 A C enlarged view in Figure 5 ;

[0038] Figure 7 An A-A direction sectional view along Figure 2 ;

[0039] Figure 8 A D enlarged view in Figure 7 ;

[0040] Figure 9 A large steel bending device main structure perspective view of the present application Figure 3 ;

[0041] The reference signs in the drawings represent respectively:

[0042] 1, bending machine main body; 2, bending cylinder; 3, upper die outer frame; 4, upper die quick adjusting mechanism; 41, upper die main body assembly; 411, upper die clamp; 412, clamp slot; 413, upper die main body; 42, upper die quick adjusting drive assembly; 421, upper die adjusting motor; 422, drive roller; 423, drive belt; 424, drive rail; 5, upper die locking mechanism; 51, clamp locking assembly; 511, clamp locking hole; 512, frame opening; 513, clamp locking bolt; 514, connecting rod; 52, upper die limiting assembly; 521, limiting rod; 522, limiting rod slot; 53, gravity self-locking assembly; 531, rotating shaft; 532, gravity self-locking rod; 6, adjustable lower die mechanism; 61, wear position adjusting assembly; 611, fixed lower die seat; 612, lower die seat slot; 613, rolling die; 614, wear adjusting motor; 615, limiting sliding groove; 616, limiting guide rail; 62, spacing adjusting assembly; 621, spacing adjusting inclined slot; 622, spacing adjusting sliding block; 623, spacing adjusting cylinder; 624, spacing locking rack; 625, spacing locking bolt; 626, locking bolt sliding shaft; 627, spring; 63, flatness detection assembly; 631, detector drive motor; 632, drive screw; 633, drive screw seat; 634, detector main body; 635, length adjusting sleeve assembly. DETAILED DESCRIPTION

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0044] The present application will be further described in conjunction with the embodiments.

[0045] Embodiment 1

[0046] Please refer to the bending machine main body 1-9 in the accompanying drawings, a large steel bending device, comprising a bending machine main body 1;

[0047] The upper ends of the front of the bending machine main body 1 are fixedly installed with two groups of bending cylinders 2 symmetrically left and right, and the output ends of the bending cylinders 2 are fixedly connected with the upper die outer frame 3;

[0048] The lower end of the upper die outer frame 3 is installed with an upper die quick adjusting mechanism 4 for quickly replacing a row of upper dies;

[0049] The front end of the upper die quick adjusting mechanism 4 is lockingly installed with an upper die locking mechanism 5 for locking the position of the upper die;

[0050] The adjustable lower die mechanism 6 is fixedly installed above the front end of the bending machine body 1 and is used to adjust the wear position of the lower die;

[0051] The upper die quick adjustment mechanism 4 comprises an upper die body assembly 41 and an upper die quick adjustment driving assembly 42, and the upper die body assembly 41 and the upper die quick adjustment driving assembly 42 are installed at the lower end of the upper die outer frame 3 and are fixedly connected with each other;

[0052] The adjustable lower die mechanism 6 comprises a wear position adjustment assembly 61, a spacing adjustment assembly 62 and a flatness detection assembly 63, the wear position adjustment assembly 61 is fixedly installed above the front end of the bending machine body 1, the spacing adjustment assembly 62 is installed at the lower end of the wear position adjustment assembly 61, and the flatness detection assembly 63 is installed at one side of the wear position adjustment assembly 61;

[0053] When the large steel bending device works normally, the operator first places the steel plate to be processed on the wear position adjustment assembly 61 of the adjustable lower die mechanism 6, and then starts the bending cylinder 2, the bending cylinder 2 drives the upper die body assembly 41 of the upper die quick adjustment mechanism 4 of the upper die outer frame 3 to move in the vertical direction to process the steel plate, if the operator needs different upper die body assemblies 41, the locking effect of the upper die locking mechanism 5 on the upper die body assembly 41 is released after the upper die body assembly 41 is reset, the upper die quick adjustment driving assembly 42 is started to quickly replace a row of upper die body assemblies 41 and lock the position of the upper die body assembly 41 through the upper die locking mechanism 5, the spacing adjustment assembly 62 is started to adjust the spacing of the wear position adjustment assembly 61, and then the bending processing of the steel plate is continued, when the wear position adjustment assembly 61 is used for a long time, if it is known whether the contact part of the wear position adjustment assembly 61 with the steel plate to be processed will be affected by the bending precision due to serious wear, the flatness detection assembly 63 is started to detect the wear position adjustment assembly 61, if the contact part of the wear position adjustment assembly 61 with the steel plate to be processed is damaged, the wear position adjustment assembly 61 is started to change the contact position of the wear position adjustment assembly 61 with the steel plate to be processed;

[0054] The large steel bending device can meet different bending requirements of the plate material by quickly replacing a row of upper die main body assemblies 41 through the upper die quick adjustment driving assembly 42 and adjusting the spacing of the upper die main body assemblies 41 through the spacing adjustment assembly 62, which not only facilitates the replacement of the upper die, but also saves time for replacing the upper die, greatly facilitating the bending work of the plate material; the upper die locking mechanism 5 can not only lock the position of the upper die main body assemblies 41 to prevent the upper die main body assemblies 41 from deviating, but also share the pressure borne by the upper die quick adjustment driving assembly 42 to prevent the upper die quick adjustment driving assembly 42 from being damaged; the cooperation of the flatness detection assembly 63 and the wear position adjustment assembly 61 can timely adjust the contact position of the wear position adjustment assembly 61 and the plate to be processed, thereby ensuring the bending precision of the steel plate.

[0055] The upper die quick adjustment driving assembly 42 comprises an upper die adjustment motor 421, a driving roller 422, a driving belt 423 and a driving track 424. The upper die adjustment motor 421 is fixedly installed on the back of the upper die outer frame 3. Two groups of driving rollers 422 are rotationally installed inside the upper die outer frame 3 in left-right symmetry. The outer side of the driving roller 422 is provided with a driving track 424 for sliding connection with the driving belt 423. The driving track 424 is fixedly connected with the inside of the upper die outer frame 3. The output end of the upper die adjustment motor 421 is fixedly connected with a group of driving rollers 422 through the upper die outer frame 3. The driving roller 422 is in transmission connection with the driving belt 423.

[0056] The upper die main body assembly 41 comprises an upper die clamp 411, a clamp slot 412 and an upper die main body 413. The clamp slot 412 is formed on the upper die clamp 411 for sliding connection with the upper die main body 413. The upper die clamp 411 is fixedly connected with the driving belt 423 and is in limit sliding connection with the driving track 424. The upper die clamp 411 is uniformly provided with a plurality of groups in the horizontal direction and is symmetrically provided with two groups at the upper and lower ends of the driving track 424.

[0057] When the upper die quick adjustment mechanism 4 is normally working, if the upper die needs to be replaced, the upper die adjustment motor 421 is started. The upper die adjustment motor 421 moves the driving belt 423 in the driving track 424 through the driving roller 422, so that the position of a row of upper die main bodies 413 at the upper end of the driving track 424 is exchanged with the position of a row of original upper die main bodies 413 at the lower end of the driving track 424, achieving the effect of quickly replacing the upper die. Not only is the replacement operation convenient, but also the time spent is relatively long, greatly facilitating the bending work of the steel plate.

[0058] The upper die locking mechanism 5 comprises a clamp locking assembly 51, an upper die limiting assembly 52 and a gravity self-locking assembly 53. The clamp locking assembly 51 is installed at the lower end of the upper die outer frame 3 and is in locking connection with the upper die clamp 411. The upper die limiting assembly 52 is installed at the right side of the lower end of the upper die outer frame 3 and is in contact connection with the upper die clamp 411. The two sets of gravity self-locking assemblies 53 are fixedly installed on the front face of the upper die outer frame 3, and are located above the clamp locking assembly 51 and the upper die limiting assembly 52 and are in locking connection with the clamp locking assembly 51 and the upper die limiting assembly 52;

[0059] The clamp locking assembly 51 comprises a clamp locking hole 511, a frame opening 512, a clamp locking bolt 513 and a connecting rod 514. The upper die clamp 411 is provided with the clamp locking hole 511 in sliding connection with the clamp locking bolt 513. The upper die outer frame 3 is provided with the frame openings 512 in communication at the front and rear ends and in sliding connection with the clamp locking bolt 513. Each frame opening 512 is provided with one clamp locking bolt 513, and the front ends of all the clamp locking bolts 513 are fixedly connected with the connecting rod 514.

[0060] The upper die limiting assembly 52 comprises a limiting rod 521 and a limiting rod slot 522. The upper die outer frame 3 is provided with the limiting rod slots 522 in communication at the front and rear ends of the right side and in sliding connection with the limiting rod 521. The limiting rod 521 is located in the limiting rod slot 522 and is in contact connection with the upper die clamp 411 at the rightmost lower end of the drive track 424.

[0061] The two sets of gravity self-locking assemblies 53 comprise a rotating shaft 531 and a gravity self-locking rod 532. The two sets of rotating shafts 531 are fixedly connected with the front face of the upper die outer frame 3. One set of rotating shafts 531 is located above the frame opening 512, and the other set of rotating shafts 531 is located above the limiting rod slot 522. The gravity self-locking rod 532 is in rotating connection with the rotating shaft 531, and the two sets of gravity self-locking rods 532 are in locking connection with the connecting rod 514 and the limiting rod 521, respectively.

[0062] When the upper die locking mechanism 5 is working normally, if the upper die needs to be replaced, first, the gravity self-locking rod 532 is pulled to rotate the 523 around the rotating shaft 531 to release the locking effect of the gravity self-locking rod 532 on the connecting rod 514 and the limiting rod 521, then the connecting rod 514 and the limiting rod 521 are pulled out to pull out the clamp locking bolt 513 in the clamp locking hole 511 and the frame opening 512 at the lower end of the driving track 424 and the limiting rod 521 in the limiting rod slot 522, thereby releasing the locking effect on the upper die clamp 411, when the upper die clamp 411 and the upper die body 413 at the lower end of the driving track 424 are separated from the lower end of the driving track 424, the limiting rod 521 is inserted into the limiting rod slot 522 and the gravity self-locking rod 532 at the upper end of the limiting rod 521 is loosened, so that the gravity self-locking rod 532 is locked in the position of the limiting rod 521 under the action of gravity, the upper die clamp 411 and the upper die body 413 that need to be replaced continue to move until the rightmost upper die clamp 411 is blocked by the limiting rod 521 to determine the position of the upper die clamp 411 and the upper die body 413 that need to be replaced, at this time, the clamp locking bolt 513 is inserted into the connected clamp locking hole 511 and frame opening 512 to lock the position of the upper die clamp 411 and the upper die body 413, the gravity self-locking rod 532 is loosened to lock the position of the connecting rod 514 under the action of gravity, and the replacement work of the upper die body assembly 41 is completed. The cooperation of the clamp locking assembly 51, the upper die limiting assembly 52 and the gravity self-locking assembly 53 not only completes the position locking work of the replaced upper die body assembly 41, but also makes the clamp locking bolt 513 and the limiting rod 521 share the pressure on the driving track 424 during the bending work, thereby preventing the driving track 424 from being damaged.

[0063] The wear position adjusting assembly 61 includes a fixed lower die seat 611, a lower die seat slot 612, a rolling die 613, a wear adjusting motor 614, a limiting sliding groove 615 and a limiting guide rail 616. Two groups of fixed lower die seats 611 are symmetrically fixed and installed above the front end of the bending machine body 1, the fixed lower die seat 611 is provided with a lower die seat slot 612 connected with the rolling die 613 in a limiting sliding manner, the rolling die 613 is installed in the lower die seat slot 612, the wear adjusting motor 614 is fixedly installed at the left end of the fixed lower die seat 611, and the output end of the wear adjusting motor 614 is fixedly connected with the rolling die 613, a plurality of limiting sliding grooves 615 for sliding connection with the limiting guide rail 616 are symmetrically fixed and installed at the lower end of the fixed lower die seat 611 in a horizontal direction, and the limiting guide rail 616 is fixedly installed above the front end of the bending machine body 1.

[0064] The pitch adjusting assembly 62 comprises a pitch adjusting chute 621, a pitch adjusting slider 622, a pitch adjusting cylinder 623, a pitch locking rack 624, a pitch locking bolt 625, a locking bolt sliding shaft 626 and a spring 627. The lower ends of the middle portions of the two fixed lower die seats 611 are respectively provided with the pitch adjusting chutes 621 for abutting sliding connection with the pitch adjusting sliders 622. The pitch adjusting cylinder 623 is fixedly installed at the lower end of the middle portion of the fixed lower die seat 611, and the output end of the pitch adjusting cylinder 623 is fixedly connected with the pitch adjusting slider 622. The pitch locking rack 624 is fixedly installed at the rear side of the lower end of the fixed lower die seat 611. The rear end of the pitch adjusting slider 622 is fixedly installed with the locking bolt sliding shaft 626. The pitch locking bolt 625 is in sliding connection with the locking bolt sliding shaft 626 and is in locking connection with the pitch locking rack 624. The upper end of the pitch locking bolt 625 is in abutting sliding connection with the fixed lower die seat 611, and the lower end of the pitch locking bolt 625 is in abutting sliding connection with the lower end of the bending machine body 1. The spring 627 is located outside the locking bolt sliding shaft 626, one end of the spring 627 is fixedly connected with the pitch adjusting slider 622, and the other end is fixedly connected with the pitch locking bolt 625.

[0065] The flatness detection assembly 63 comprises a detector driving motor 631, a driving screw 632, a driving screw seat 633, a detector main body 634 and a length adjusting sleeve assembly 635. The driving screw seat 633 is fixedly installed at the left and right ends of the back of the fixed lower die seat 611. The driving screw 632 is located between the driving screw seats 633 and is in rotational connection with the driving screw seats 633 at both ends. The detector driving motor 631 is fixedly installed on one end of the driving screw seat 633 and is fixedly connected with the driving screw 632 at the output end. The detector main body 634 is in threaded connection with the driving screw 632 and is in abutting sliding connection with the rolling die 613. The length adjusting sleeve assembly 635 is fixedly installed between the two rolling dies 613. The two sleeve assembly ends of the length adjusting sleeve assembly 635 are respectively fixedly connected with the detector main body 634, and the two sleeve assembly ends of the length adjusting sleeve assembly 635 are in abutting sliding connection.

[0066] When the adjustable lower die mechanism 6 is normally working, if the surface wear of the rolling die 613 needs to be detected, the detector driving motor 631 is started, the detector driving motor 631 drives the detector body 634 to move on the rolling die 613 in the horizontal direction through the driving of the driving screw rod 632, so as to detect the wear of the contact part of the rolling die 613 and the steel plate. If the bending precision is reduced due to the wear of the rolling die 613, the wear adjusting motor 614 connected with the worn rolling die 613 is started, the wear adjusting motor 614 drives the rolling die 613 to rotate in the lower die seat slot 612, so that the position of the unworn part of the rolling die 613 replaces the position of the worn part of the wear adjusting motor 614. If the distance between the two fixed lower die seats 611 needs to be adjusted, the distance adjusting cylinder 623 is started, when the output end of the distance adjusting cylinder 623 extends, the distance adjusting cylinder 623 drives the distance adjusting sliding block 622 to move to the right in the distance adjusting inclined slot 621, under the driving of the distance adjusting sliding block 622, the two fixed lower die seats 611 move towards each other on the limiting guide rail 616 through the limiting sliding groove 615, so that the distance between the two fixed lower die seats 611 is reduced, and the length of the length adjusting sleeve assembly 635 is reduced. In the process of moving to the right of the distance adjusting sliding block 622, the distance adjusting sliding block 622 drives the distance locking bolt 625 to move to the right through the locking bolt sliding shaft 626, the rear end of the distance locking bolt 625 is blocked in the movement to the right, the distance locking rack 624 provides a forward movement thrust to the distance locking bolt 625, the spring 627 is compressed, until the distance locking bolt 625 moves to the next tooth groove of the distance locking rack 624, the spring 627 resets the distance locking bolt 625 to move backward until the rear end of the distance locking bolt 625 is attached to the distance locking rack 624. When the distance adjusting cylinder 623 stops moving, the distance locking rack 624 locks the position of the distance locking bolt 625, so that the distance between the two fixed lower die seats 611 is fixed.

[0067] The degree of wear of the surface of the rolling die 613 can be detected through the flatness detection assembly 63. The bending precision of the steel plate can be always maintained by changing the position of the wear of the rolling die 613 through the wear adjusting motor 614, and the operation is convenient. The distance between the two fixed lower die seats 611 can be changed through the distance adjusting assembly 62, so that different bending effects can be realized by cooperating with the upper die clamp 411 and the upper die body 413.

[0068] Embodiment 2

[0069] Please refer to the bending machine body 1-9 in the drawings, a use method of a large steel bending device, comprising the following steps:

[0070] Step one, pull the gravity self-locking rod 532 to make 523 rotate around the rotating shaft 531 to release the locking effect of the gravity self-locking rod 532 on the connecting rod 514 and the limiting rod 521, then pull the connecting rod 514 and the limiting rod 521 to pull out the clamp locking bolt 513 in the clamp locking hole 511 and the frame opening 512 and the limiting rod 521 in the limiting rod slot 522 at the lower end of the drive track 424, so as to release the locking effect on the upper mold clamp 411, start the upper mold adjusting motor 421, the upper mold adjusting motor 421 moves the drive belt 423 in the drive track 424 through the drive roller 422, so that the position of the row of upper mold bodies 413 at the upper end of the drive track 424 is exchanged with the position of the original row of upper mold bodies 413 at the lower end of the drive track 424, when the row of upper mold clamps 411 and upper mold bodies 413 at the lower end of the drive track 424 move away from the lower end of the drive track 424, insert the limiting rod 521 into the limiting rod slot 522 and loosen the gravity self-locking rod 532 at the upper end of the limiting rod 521, so that the gravity self-locking rod 532 rotates around the rotating shaft 531 under the action of gravity to lock the position of the limiting rod 521, the row of upper mold clamps 411 and upper mold bodies 413 to be replaced continue to move until the rightmost upper mold clamp 411 is blocked by the limiting rod 521 to determine the position of the upper mold clamp 411 and the upper mold body 413 to be replaced, at this time, insert the clamp locking bolt 513 into the connected clamp locking hole 511 and frame opening 512 to lock the position of the upper mold clamp 411 and the upper mold body 413, loosen the gravity self-locking rod 532 to lock the position of the connecting rod 514 under the action of gravity, the replacement work of the upper mold body assembly 41 is completed.

[0071] Step two, detecting the wear of the surface of the rolling die 613, then starting the detector drive motor 631, the detector drive motor 631 drives the driving screw 632 to rotate and drives the detector main body 634 to move horizontally on the rolling die 613, so as to detect the wear of the contact part between the rolling die 613 and the steel plate. If the bending precision is reduced due to the wear of the rolling die 613, the wear adjusting motor 614 connected with the worn rolling die 613 is started, the wear adjusting motor 614 drives the rolling die 613 to rotate in the lower die seat slot 612, so that the position of the unworn part of the rolling die 613 replaces the position of the worn part of the wear adjusting motor 614. The spacing adjusting cylinder 623 is started, when the output end of the spacing adjusting cylinder 623 extends, the spacing adjusting cylinder 623 drives the spacing adjusting sliding block 622 to move rightwards in the spacing adjusting inclined slot 621, under the drive of the spacing adjusting sliding block 622, the two fixed lower die seats 611 move towards each other on the limiting guide rail 616 through the limiting sliding slot 615, so that the spacing between the two fixed lower die seats 611 is reduced, and the length of the length adjusting sleeve assembly 635 is reduced. In the process of moving rightwards of the spacing adjusting sliding block 622, the spacing adjusting sliding block 622 drives the spacing locking bolt 625 to move rightwards through the locking bolt sliding shaft 626, the rear end of the spacing locking bolt 625 is blocked in the rightward movement by the spacing locking rack 624, the spacing locking rack 624 provides a forward movement thrust to the spacing locking bolt 625, the spring 627 is compressed, until the spacing locking bolt 625 moves to the next tooth groove of the spacing locking rack 624, the spring 627 resets to drive the spacing locking bolt 625 to move backwards until the rear end of the spacing locking bolt 625 is attached to the spacing locking rack 624. When the spacing adjusting cylinder 623 stops moving, the spacing locking rack 624 locks the position of the spacing locking bolt 625, so that the spacing between the two fixed lower die seats 611 is fixed.

[0072] Step three, placing the steel plate to be processed on the rolling die 613, and aligning the bending line with the upper die main body 413, starting the bending cylinder 2, the bending cylinder 2 drives the upper die main body 413 of the upper die main body assembly 41 of the upper die quick adjusting mechanism 4 of the upper die outer frame 3 to move in the vertical direction to bend the steel plate.

[0073] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit it; although the foregoing embodiments of the present application have been described in detail, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A large steel bending device, comprising a bending machine body (1), characterized in that: the upper end of the front of the bending machine body (1) is fixedly installed with two groups of bending cylinders (2) symmetrically left and right, and the output end of the bending cylinder (2) is fixedly connected with an upper die outer frame (3); the lower end of the upper die outer frame (3) is installed with an upper die quick adjusting mechanism (4) for quickly replacing a row of upper dies; the front end of the upper die quick adjusting mechanism (4) is lockingly installed with an upper die locking mechanism (5) for locking the position of the upper die; the upper end of the front end of the bending machine body (1) is fixedly installed with an adjustable lower die mechanism (6) for adjusting the wear position of the lower die; the upper die quick adjusting mechanism (4) comprises an upper die main body assembly (41) and an upper die quick adjusting drive assembly (42), the upper die main body assembly (41) and the upper die quick adjusting drive assembly (42) are installed at the lower end of the upper die outer frame (3), and the upper die main body assembly (41) is fixedly connected with the upper die quick adjusting drive assembly (42); the adjustable lower die mechanism (6) comprises a wear position adjusting assembly (61), a spacing adjusting assembly (62) and a flatness detecting assembly (63), the wear position adjusting assembly (61) is fixedly installed at the upper end of the front end of the bending machine body (1), the spacing adjusting assembly (62) is installed at the lower end of the wear position adjusting assembly (61), and the flatness detecting assembly (63) is installed at one side of the wear position adjusting assembly (61); the upper die quick adjusting drive assembly (42) comprises an upper die adjusting motor (421), a drive roller (422), a drive belt (423) and a drive track (424), the upper die adjusting motor (421) is fixedly installed on the back of the upper die outer frame (3), two groups of drive rollers (422) are rotatably installed in the upper die outer frame (3) symmetrically left and right, the outer side of the drive roller (422) is provided with a drive track (424) for sliding connection with the drive belt (423), the drive track (424) is fixedly connected with the inside of the upper die outer frame (3), the output end of the upper die adjusting motor (421) penetrates through the upper die outer frame (3) and is fixedly connected with one group of drive rollers (422), and the drive roller (422) is in transmission connection with the drive belt (423); the upper die main body assembly (41) comprises an upper die clamp (411), a clamp slot (412) and an upper die main body (413), the clamp slot (412) for sliding connection with the upper die main body (413) is formed in the upper die clamp (411), the upper die clamp (411) is fixedly connected with the drive belt (423) and is in limiting sliding connection with the drive track (424), the upper die clamp (411) is uniformly provided with a plurality of groups in the horizontal direction and is symmetrically provided with two groups at the upper and lower ends of the drive track (424). The upper die locking mechanism (5) comprises a clamp locking assembly (51), an upper die limiting assembly (52) and a gravity self-locking assembly (53), the clamp locking assembly (51) is installed at the lower end of the upper die outer frame (3) and is in locking connection with the upper die clamp (411), the upper die limiting assembly (52) is installed at the right side of the lower end of the upper die outer frame (3) and is in contact connection with the upper die clamp (411), two groups of gravity self-locking assemblies (53) are fixedly installed on the front face of the upper die outer frame (3), and the two groups of gravity self-locking assemblies (53) are located above the clamp locking assembly (51) and the upper die limiting assembly (52) and are in locking connection with the clamp locking assembly (51) and the upper die limiting assembly (52); The clamp locking assembly (51) comprises a clamp locking hole (511), a frame opening (512), a clamp locking bolt (513) and a connecting rod (514), the upper die clamp (411) is provided with the clamp locking hole (511) in sliding connection with the clamp locking bolt (513), the front and rear ends of the upper die outer frame (3) are provided with the frame openings (512) in communication and in sliding connection with the clamp locking bolt (513), and each frame opening (512) is provided with one clamp locking bolt (513) and the front ends of all the clamp locking bolts (513) are fixedly connected with the connecting rod (514); The upper die limiting assembly (52) comprises a limiting rod (521) and a limiting rod slot (522), the front and rear ends of the right side of the upper die outer frame (3) are provided with the limiting rod slots (522) in communication and in sliding connection with the limiting rod (521), and the limiting rod (521) is located in the limiting rod slot (522) and is in contact connection with the upper die clamp (411) at the rightmost lower end of the driving track (424); The two groups of gravity self-locking assemblies (53) comprise a rotating shaft (531) and a gravity self-locking rod (532), the two groups of rotating shafts (531) are fixedly connected with the front face of the upper die outer frame (3), one group of rotating shafts (531) is located above the frame opening (512), the other group of rotating shafts (531) is located above the limiting rod slot (522), the gravity self-locking rod (532) is in rotating connection with the rotating shaft (531), and the two groups of gravity self-locking rods (532) are in locking connection with the connecting rod (514) and the limiting rod (521).

2. The large steel material bending device according to claim 1, characterized in that, The wear position adjusting assembly (61) comprises fixed lower die seats (611), lower die seat grooves (612), rolling dies (613), wear adjusting motors (614), limiting sliding grooves (615) and limiting guide rails (616), two groups of fixed lower die seats (611) are symmetrically fixed and installed above the front end of the bending machine body (1) respectively, the fixed lower die seats (611) are provided with lower die seat grooves (612) in sliding connection with the rolling dies (613), the rolling dies (613) are installed in the lower die seat grooves (612), the wear adjusting motors (614) are fixedly installed at the left end of the fixed lower die seats (611) and the output ends of the wear adjusting motors (614) are fixedly connected with the rolling dies (613), a plurality of limiting sliding grooves (615) are symmetrically fixed and installed at the lower end of the fixed lower die seats (611) in horizontal direction, and the limiting guide rails (616) are fixedly installed above the front end of the bending machine body (1).

3. The large steel material bending device according to claim 2, characterized in that, The distance adjusting assembly (62) comprises distance adjusting inclined grooves (621), distance adjusting sliding blocks (622), distance adjusting cylinders (623), distance locking racks (624), distance locking pins (625), locking pin sliding shafts (626) and springs (627), the lower ends of the middle portions of the two fixed lower die seats (611) are respectively provided with distance adjusting inclined grooves (621) in sliding connection with the distance adjusting sliding blocks (622), the distance adjusting cylinders (623) are fixedly installed at the lower ends of the middle portions of the fixed lower die seats (611) and the output ends of the distance adjusting cylinders (623) are fixedly connected with the distance adjusting sliding blocks (622), the distance locking racks (624) are fixedly installed at the lower end of the rear side of the fixed lower die seats (611), the rear ends of the distance adjusting sliding blocks (622) are fixedly installed with the locking pin sliding shafts (626), the distance locking pins (625) are in sliding connection with the locking pin sliding shafts (626) and are in locking connection with the distance locking racks (624), the upper ends of the distance locking pins (625) are in sliding connection with the fixed lower die seats (611), the lower ends of the distance locking pins (625) are in sliding connection with the lower end of the bending machine body (1), the springs (627) are located outside the locking pin sliding shafts (626), one end of the springs (627) is fixedly connected with the distance adjusting sliding blocks (622) and the other end is fixedly connected with the distance locking pins (625).

4. The large steel material bending device according to claim 3, characterized in that, The flatness detection assembly (63) comprises a detector driving motor (631), a driving screw (632), a driving screw seat (633), a detector main body (634) and a length adjusting sleeve assembly (635), the driving screw seat (633) is fixedly installed at the left and right ends of the back of the fixed lower die seat (611), the driving screw (632) is located between the driving screw seats (633) and the two ends of the driving screw (632) are rotationally connected with the driving screw seats (633), the detector driving motor (631) is fixedly installed on one end of the driving screw seat (633) and the output end of the detector driving motor (631) is fixedly connected with the driving screw (632), the detector main body (634) is threadedly connected with the driving screw (632) and is slidingly connected with the rolling dies (613), the detector main body (634) is fixedly installed with the length adjusting sleeve assembly (635) between the two rolling dies (613), the two sleeve assembly ends of the length adjusting sleeve assembly (635) away from each other are fixedly connected with the detector main body (634) respectively, and the two sleeve assembly ends of the length adjusting sleeve assembly (635) close to each other are slidingly connected.

5. A method of using the large steel material bending apparatus according to claim 4, characterized by, comprising the steps of: Step one, pull the gravity self-locking rod (532) around the rotation shaft (531) to remove the locking effect of the gravity self-locking rod (532) on the connecting rod (514) and the limiting rod (521), then pull the connecting rod (514) and the limiting rod (521) to pull out the clamp locking bolt (513) in the clamp locking hole (511) and the frame opening (512) and the limiting rod (521) in the limiting rod slot (522) at the lower end of the drive rail (424), so as to remove the locking effect on the upper mold clamp (411), start the upper mold adjusting motor (421), the upper mold adjusting motor (421) moves the drive belt (423) in the drive rail (424) through the drive roller (422), so that the position of the row of upper mold main bodies (413) at the upper end of the drive rail (424) and the original row of upper mold main bodies (413) at the lower end of the drive rail (424) are exchanged, when the row of upper mold clamps (411) and upper mold main bodies (413) at the lower end of the drive rail (424) are away from the lower end of the drive rail (424), insert the limiting rod (521) into the limiting rod slot (522) and loosen the gravity self-locking rod (532) at the upper end of the limiting rod (521), so that the gravity self-locking rod (532) rotates around the rotation shaft (531) under the action of gravity to lock the position of the limiting rod (521), the row of upper mold clamps (411) and upper mold main bodies (413) to be replaced continue to move until the rightmost upper mold clamp (411) is blocked by the limiting rod (521) to determine the position of the upper mold clamp (411) and the upper mold main body (413) to be replaced, at this time, insert the clamp locking bolt (513) into the connected clamp locking hole (511) and frame opening (512) to lock the position of the upper mold clamp (411) and the upper mold main body (413), loosen the gravity self-locking rod (532) to lock the position of the connecting rod (514) under the action of gravity, the replacement work of the upper mold main body assembly (41) is completed; Step two, detect the wear of the rolling die (613) surface, then start the detector drive motor (631), the detector drive motor (631) drives the detector drive screw (632) to rotate and drive the detector main body (634) to move horizontally on the rolling die (613), so as to detect the wear of the contact part between the rolling die (613) and the steel plate. If the bending precision is reduced due to wear of the rolling die (613), start the wear adjusting motor (614) connected with the worn rolling die (613), and the wear adjusting motor (614) drives the rolling die (613) to rotate in the lower die seat slot (612), so that the position of the unworn part of the rolling die (613) replaces the position of the worn part of the wear adjusting motor (614); start the distance adjusting cylinder (623), when the output end of the distance adjusting cylinder (623) extends, the distance adjusting cylinder (623) drives the distance adjusting slider (622) to move right in the distance adjusting chute (621), under the drive of the distance adjusting slider (622), the two fixed lower die seats (611) move towards each other on the limiting guide rail (616) through the limiting sliding groove (615), so that the distance between the two fixed lower die seats (611) is reduced, and the length of the length adjusting sleeve assembly (635) is reduced. In the process of moving right of the distance adjusting slider (622), the distance adjusting slider (622) drives the distance locking bolt (625) to move right through the locking bolt sliding shaft (626), the rear end of the distance locking bolt (625) is blocked in the right movement by the distance locking rack (624), the distance locking rack (624) provides a forward movement thrust to the distance locking bolt (625), the spring (627) is compressed, until the distance locking bolt (625) moves to the next tooth groove of the distance locking rack (624), the spring (627) resets to drive the distance locking bolt (625) to move backward until the rear end of the distance locking bolt (625) is attached to the distance locking rack (624). When the distance adjusting cylinder (623) stops moving, the distance locking rack (624) locks the position of the distance locking bolt (625), so that the distance between the two fixed lower die seats (611) is fixed; Step three, place the steel plate to be processed on the rolling die (613), and align the bending line with the upper die main body (413), start the bending cylinder (2), the bending cylinder (2) drives the upper die main body (413) of the upper die fast adjusting mechanism (4) of the upper die outer frame (3) to move in the vertical direction to bend the steel plate.

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