Full-automatic cold roll forming production line

Abstract

According to the full-automatic cold roll forming production line, a punching assembly is arranged before cold roll forming, follow-up punching operation is not needed, the situation that the strength of a profile is reduced due to follow-up punching is avoided, the machining efficiency is improved, and the purpose of full-automatic production is achieved; the first correcting assembly, the stress relieving assembly and the second correcting assembly are arranged between punching and cold roll forming, in the cold roll forming process and between cold roll forming and cutting-off correspondingly, deformation possibly occurring on the edge of the mounting hole is corrected multiple times, deformation of the edge of the mounting hole is effectively eradicated, and the production efficiency is improved. And the situation that the steel strength is reduced due to punching is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of cold bending forming, and particularly to a full-automatic cold bending forming production line. Background Art

[0002] C-shaped steel and U-shaped steel are commonly used profiles. The two are usually formed into specific shapes by bending steel through a cold bending forming device. Among them, the cold bending forming device generally includes a cold bending forming mechanism and a servo cutting mechanism. The cold bending forming mechanism is composed of multiple roller pressing components, and the roller pressing components are composed of rollers with different shapes. When the steel passes through the roller pressing components one by one, its edges will be gradually bent, and finally the required cross-sectional shape is formed. The process does not involve heating, so it is called cold bending forming. Then, the cutting component of the servo cutting mechanism moves along the track, so that the cutting tool of the cutting component moves synchronously with the profile to ensure that the cutting tool stably cuts the profile;

[0003] However, there is no punching function in the production line corresponding to the existing cold bending forming device. After the profile is cut, it is necessary to manually send each section of the profile to a punching machine for punching to form installation holes for subsequent assembly. This production method not only cannot perform automated batch operations, but also after the profile punching is completed, it will cause local deformation and uneven internal stress of the profile, affecting the strength of the profile. Summary of the Invention

[0004] In view of the above defects or deficiencies in the prior art, a full-automatic cold bending forming production line is expected to be provided.

[0005] The full-automatic cold bending forming production line provided by the present invention includes:

[0006] A punching mechanism, including a plurality of punching components arranged along a first direction, and a first correction component located on one side of the punching components along the first direction. The punching components are used to impact the steel from top to bottom to form installation holes, and the first correction component is used to eliminate the deformation at the edge of the installation hole and form an indentation at the bending position on the top surface of the steel. The indentation is located on one side of the installation hole;

[0007] A cold bending forming mechanism, which is arranged on the side of the first correction component away from the punching components along the first direction, includes a plurality of roller pressing components for cold bending forming, and a stress elimination component arranged between two roller pressing components in the middle. The stress elimination component is used to eliminate the stress concentration phenomenon around the installation hole during cold bending forming;

[0008] The punching mechanism further includes a plurality of leveling and conveying components, and each of the leveling and conveying components is arranged on both sides of the punching components and both sides of the first correction component along the first direction, and is used to drive the steel to sequentially pass through each punching component and the first correction component and move toward the cold bending forming mechanism side along the first direction.

[0009] Preferably, the punching mechanism further includes a punching frame and a punching guide rail. The extending direction of the punching guide rail is the first direction, and the punching assembly and the first correction assembly are movable along the punching guide rail.

[0010] Preferably, the punching assembly includes:

[0011] A lower base part, including a first substrate movable along the punching guide rail, and a lower die base is provided at the top end of the first substrate;

[0012] An upper base part, including a first mounting plate provided above the first substrate, a first telescopic member is provided at the top end of the first mounting plate, and an upper die base is installed at the movable end of the first telescopic member through the first mounting plate;

[0013] A plurality of punching dies, each including a lower die provided at the top end of the lower die base, a punching channel is provided on the lower die, and the punching die further includes an upper template provided at the bottom end of the upper die base, and a punching column is provided at the position corresponding to the punching channel on the upper template. Both the lower die and the upper template are movable along the first direction;

[0014] A plurality of positioning components, provided at the top end of the lower die base and the bottom end of the upper die base, for fixing the lower die or the upper template.

[0015] Preferably, a die-changing guide rail is provided at the bottom end of the upper die base and the top end of the lower die base. The extending direction of each die-changing guide rail is the first direction. Die-changing electric sliders are provided at the top end of the lower die and the bottom end of the upper template, and the die-changing guide rail is fitted with the die-changing electric slider.

[0016] Preferably, the positioning component includes a plurality of fixed side plates provided at the top end of the lower die base or the bottom end of the upper die base. Each of the fixed side plates is divided into two groups, and the two groups of fixed side plates are respectively located on both sides of the lower die or the upper template in the second direction;

[0017] A guide sleeve is embedded and installed in the middle of the fixed side plate. An electromagnet is provided at the end of the guide sleeve away from the lower die or the upper template. A buffer spring connected to the electromagnet is provided inside the guide sleeve. A permanent magnet is provided at the end of the buffer spring away from the electromagnet. A rubber frustum is provided at the end of the permanent magnet away from the buffer spring. A positioning hole is provided on the side surface of the lower die or the upper template close to the rubber frustum.

[0018] Preferably, the first correction component includes a second substrate movable along the punching guide rail. A second telescopic member is provided at the bottom end of the second substrate. A correction base block is detachably installed at the movable end of the second telescopic member through the second substrate. A compensation convex block is provided at the top end of the correction base block;

[0019] Above the second substrate, a second mounting plate is installed. At the top of the second mounting plate, a third telescopic member is installed. The movable end of the third telescopic member passes through the second mounting plate and is detachably installed with a T-shaped mounting strip. At the bottom end of the T-shaped mounting strip, a triangular strip is provided.

[0020] Preferably, the stress relief assembly includes:

[0021] The installation assembly includes an installation straight plate provided between adjacent rolling assemblies. The normal direction of the installation straight plate is the first direction;

[0022] The rotation assembly includes two turntables distributed on both sides of the bottom of the installation straight plate along the second direction. The arc side surfaces of the turntables are evenly embedded with rolling balls. Two of the rolling balls in the same turntable always abut against the surface of the steel;

[0023] The driving assembly is provided on the installation straight plate and is used to drive the two turntables to rotate synchronously and in opposite directions.

[0024] Preferably, the production line further includes a loading mechanism, which is arranged along the first direction on the side of the punching mechanism away from the cold bending forming mechanism and is used to convey steel to the punching mechanism;

[0025] The loading mechanism includes a second leveling machine, a horizontal spiral loop, a shearing butt welder, a first leveling machine, and an unwinder arranged in sequence along the first direction away from the punching mechanism side.

[0026] Preferably, the production line further includes a straightening and cutting mechanism, which is arranged along the first direction on the side of the cold bending forming mechanism away from the punching mechanism. It includes a cutting frame. At the top of the cutting frame, a cutting guide rail is provided. The direction of the cutting guide rail is the first direction. On the cutting guide rail, a second straightening component and a cutting component that can move along the first direction are provided. The cutting component is used to cut the steel, and the second straightening component is used to monitor the deformation of the edge of the installation hole and eliminate the deformation.

[0027] Preferably, the second straightening component includes:

[0028] The frame part includes a U-shaped mounting plate arranged on the cutting guide rail and movable along the first direction. In the middle of the U-shaped mounting plate, an intermediate mounting plate is provided. The normal direction of the intermediate mounting plate is the first direction. In the middle of the intermediate mounting plate, a profile channel is provided;

[0029] A number of monitoring parts are arranged on the end face of the intermediate mounting plate close to the cold bending forming mechanism and include a laser emitter and a laser receiver. The laser receiver is used to receive the laser emitted by the laser emitter. The path of the laser is located in the plane where the outer surface of the profile channel is located and is perpendicular to the normal of the intermediate mounting plate;

[0030] A plurality of correction parts are arranged on the end face of the middle mounting plate away from the cold bending forming mechanism, corresponding to each of the monitoring parts one by one, and include a rotatable grinding roller and a fourth telescopic member. The axial direction of the grinding roller is parallel to the path of the laser, and the fourth telescopic member drives the grinding roller to move from the U-shaped mounting plate towards the outer surface of the profile channel.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0032] 1. The present invention is provided with a punching mechanism before the cold bending forming mechanism, punches before cold bending forming, and thus does not need to punch after the steel is cut. The deformation formed during punching is eliminated by the first correction component, avoiding the influence of punching on cold bending. Further, the punching component and the first correction component can move along the first direction and can move synchronously with the steel. First, the synchronization of their speeds with the material speed can eliminate the downtime, ensure continuous punching and correction, and realize automated production, improving production efficiency. Second, the consistent speed will ensure the smoothness of the cutting surface and avoid the lateral impact of the two with the steel due to the speed difference, resulting in deformation of the steel near the installation hole.

[0033] 2. Two sets of die-changing guide rails are also provided in the punching component. The upper and lower parts of multiple punching dies are respectively installed on the two sets of die-changing guide rails through die-changing electric sliders. The upper and lower parts of different dies are driven to move by the die-changing electric sliders to achieve the upper and lower correspondence of the same die. Then, the two parts are positioned by the positioning component, which not only ensures the stability of the die during punching, but also can control the die-changing electric sliders through an automated electric control system to achieve the purpose of automatic die change and improve the die change efficiency.

[0034] 3. A second telescopic member, a correction base block, and a compensation convex block are provided in the first correction component. Since the punching component punches downward, a slight downward deformation will occur at the edge of the installation hole. The second telescopic member pushes the correction base block and the compensation convex block upward. When the compensation convex block passes through the installation hole and abuts against the bottom end of the second mounting plate, the correction base block flattens and corrects the slight deformation to achieve the correction purpose of eliminating the slight deformation. Further, a third telescopic member and three triangular strips are also provided. During the correction process, the third telescopic member pushes the triangular strips downward to form indentations on the steel surface. During the subsequent cold bending forming process, the steel will be more likely to use the indentations as the bending points. On the one hand, the cold bending forming effect is improved. On the other hand, since the stress at the edge of the installation hole is weak, the indentations reduce the material offset during cold bending and avoid the situation where the material offset pulls the edge of the installation hole to cause deformation.

[0035] 4. A stress relief component is provided in the cold bending forming mechanism. Although the deformation caused by material offset is reduced through indentation, a small amount of material still concentrates towards the bending area during the cold bending process. At this time, through the rotation of the turntable, the ball moves along the surface of the steel, pushing the offset material towards the edge of the mounting hole, reducing the deformation of the mounting hole edge during the cold bending process, and effectively solving the deformation of the mounting hole edge caused by cold bending.

[0036] 5. A second correction component is provided before the cutting component. The steel passing through the profile channel is calibrated by the laser emitter and the laser receiver. If the steel deforms, the deformed area will block the laser, achieving the purpose of monitoring. Then, the grinding roller is pushed by the fourth telescopic member, and the deformed area is extruded and polished by the grinding roller, thereby completely eliminating the deformation of the mounting hole edge.

[0037] In summary, by setting the punching component before cold bending forming, there is no need for subsequent punching operations, which not only avoids the reduction of the strength of the profile caused by subsequent punching but also improves the processing efficiency, achieving the purpose of fully automated production. Further, the first correction component, the stress relief component, and the second correction component are respectively placed between punching and cold bending forming, during cold bending forming, and between cold bending forming and cutting, correcting the possible deformation of the mounting hole edge multiple times, effectively preventing the deformation of the mounting hole edge, and thus avoiding the reduction of the steel strength caused by punching.

[0038] It should be understood that the content described in the section of the invention content is not intended to limit the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, purposes, and advantages of the present invention will become more obvious:

[0040] Figure 1 It is a structural block diagram of the fully automatic cold bending forming production line provided by the embodiment of the present application;

[0041] Figure 2 It is a structural schematic diagram of the punching mechanism, cold bending forming mechanism, and correction and cutting mechanism in the fully automatic cold bending forming production line provided by the embodiment of the present application;

[0042] Figure 3 It is a structural schematic diagram of the punching component in the fully automatic cold bending forming production line provided by the embodiment of the present application;

[0043] Figure 4 It is a sectional structural schematic diagram of the punching component of the fully automatic cold bending forming production line provided by the embodiment of the present application;

[0044] Figure 5 is Figure 4 a partial enlarged structural schematic diagram of area A in

[0045] Figure 6 a structural schematic diagram of a punching die in the fully automatic cold bending forming production line provided by an embodiment of the present application;

[0046] Figure 7 a structural schematic diagram of a first correction component in the fully automatic cold bending forming production line provided by an embodiment of the present application;

[0047] Figure 8 a sectional structural schematic diagram of a correction base block in the fully automatic cold bending forming production line provided by an embodiment of the present application;

[0048] Figure 9 a mounting structural schematic diagram of a mounting straight plate in the fully automatic cold bending forming production line provided by an embodiment of the present application;

[0049] Figure 10 a mounting structural schematic diagram of a turntable and a ball in the fully automatic cold bending forming production line provided by an embodiment of the present application;

[0050] Figure 11 a structural schematic diagram of a second correction component in the fully automatic cold bending forming production line provided by an embodiment of the present application.

[0051] Reference numerals in the figure:

[0052] 1. Loading mechanism; 11. Uncoiler; 12. First leveling machine; 13. Shearing butt welder; 14. Horizontal spiral loop; 15. Second leveling machine;

[0053] 2. Punching mechanism; 21. Punching frame; 22. Punching guide rail; 23. Leveling and conveying component; 24. Punching component; 25. First correction component;

[0054] 2401. First substrate; 2402. First mounting column; 2403. First mounting plate; 2404. First telescopic member; 2405. Guide post; 2406. Upper die base; 2407. Lower die base; 2408. Die change guide rail; 2409. Discharge channel; 2410. Flange; 2411. Punching electric slider;

[0055] 2501. Second substrate; 2502. First correction electric slider; 2503. Second mounting column; 2504. Second mounting plate; 2505. Second telescopic member; 2506. Third mounting plate; 2507. Correction base block; 2508. Compensation convex block; 2509. Second through hole; 2510. Third telescopic member; 2511. T-shaped mounting strip; 2512. Triangular strip;

[0056] 3. Cold bending forming mechanism; 31. Cold bending machine frame; 32. Roller pressing assembly; 33. Stress relief assembly;

[0057] 3301. Fifth mounting plate; 3302. First L-shaped plate; 3303. Mounting straight plate; 3304. Upper shaft body; 3305. Driving pulley; 3306. Transmission gear; 3307. Driving motor; 3308. Mounting cross plate; 3309. Lower shaft body; 3310. Driven pulley; 3311. Transmission belt; 3312. Turntable; 3313. Ball;

[0058] 4. Straightening and cutting mechanism; 41. Cutting machine frame; 42. Cutting guide rail; 43. Second straightening assembly; 44. Cutting assembly;

[0059] 4301. U-shaped mounting plate; 4302. Second straightening electric slider; 4303. Intermediate mounting plate; 4304. Profile channel; 4305. Laser emitter; 4306. Laser receiver; 4307. Second L-shaped plate; 4308. Fourth telescopic member; 4309. Fixed shaft body; 4310. Grinding roller; 4311. Grinding motor;

[0060] 5. Palletizing mechanism;

[0061] 6. Punching die; 61. Lower template; 62. Lower die; 63. Upper template; 64. Punching channel; 65. Punching column; 66. Restricting plate; 67. Mounting groove; 68. Die-changing electric slider;

[0062] 7. Positioning assembly; 71. Positioning hole; 72. Fixed side plate; 73. Guide sleeve; 74. Electromagnet; 75. Buffer spring; 76. Permanent magnet; 77. Rubber round table. Detailed implementation manners

[0063] The present invention will be further described in detail below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention, rather than limiting the invention. Additionally, it should be noted that for the sake of description, only parts related to the invention are shown in the drawings.

[0064] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and embodiments.

[0065] Please refer to Figures 1 to 11 , the embodiments of the present invention provide a full-automatic cold bending forming production line, including:

[0066] The punching mechanism 2 includes a number of punching components 24 arranged in the first direction, and a first correction component 25 located on one side of the punching components 24 in the first direction. The punching components 24 are used to punch the steel from top to bottom to form mounting holes. The first correction component 25 is used to eliminate the deformation at the edge of the mounting hole and form an indentation at the bending position on the top surface of the steel. The indentation is located on one side of the mounting hole. Among them, the first direction is Figure 2 the left-right direction in

[0067] The cold bending forming mechanism 3 is arranged on the side of the first correction component 25 away from the punching components 24 in the first direction. It includes a number of roll pressing components 32 for cold bending forming, and a stress elimination component 33 arranged between two roll pressing components 32 in the middle. The stress elimination component 33 is used to eliminate the stress concentration phenomenon around the mounting hole during cold bending forming. Among them, the roll pressing component 32 is the same as the existing cold bending forming equipment, which consists of a frame body, a number of roll pressing cylinders arranged in the middle of the frame body, and a motor and a transmission mechanism for driving each roll pressing cylinder to rotate, which will not be elaborated here. And the cold bending forming mechanism 3 also includes a cold bending frame 31, and the roll pressing components 32 and the stress elimination component 33 are both installed on the cold bending frame 31;

[0068] The punching mechanism 2 further includes a number of leveling and conveying components 23. Each leveling and conveying component 23 is arranged on both sides of the punching components 24 and both sides of the first correction component 25 in the first direction, and is used to drive the steel to sequentially pass through each punching component 24 and the first correction component 25 and move towards the cold bending forming mechanism 3 side in the first direction. Among them, the leveling and conveying component 23 consists of two rollers with parallel axes, and a motor for driving the roller to rotate is installed on the frame body for installing the rollers. The steel is squeezed between the two rollers and moves towards the cold bending forming mechanism 3 side;

[0069] In the present invention, a punching mechanism 2 is arranged before the cold bending forming mechanism 3, and punching is carried out before cold bending forming. Thus, it is not necessary to punch the steel after cutting, which not only avoids the reduction of the strength of the profile caused by subsequent punching, but also improves the processing efficiency and realizes the purpose of full-automatic production; and the deformation formed during punching is eliminated by the first correction component 25 to avoid the influence of punching on cold bending.

[0070] In some embodiments, the punching mechanism 2 further includes a punching frame 21 and a punching guide rail 22. The extending direction of the punching guide rail 22 is the first direction, and the punching components 24 and the first correction component 25 can move along the punching guide rail 22; such as Figure 2As shown, the punching component 24 and the first correction component 25 can move along the punching guide rail 22 and move synchronously with the steel. First, synchronizing their speeds with the material speed can eliminate downtime, ensure continuous punching and correction, achieve automated production, and improve production efficiency. Second, consistent speeds will ensure the smoothness of the cutting surface and avoid lateral impact on the steel due to speed differences, preventing deformation of the steel near the installation holes.

[0071] In some embodiments, the punching component 24 includes: [[ID=X]]

[0072] A lower base part, including a first substrate 2401 that can move on the punching guide rail 22. A lower die base 2407 is provided at the top of the first substrate 2401. Wherein, a punching electric slider 2411 that fits is provided at the bottom of the first substrate 2401, and the first substrate 2401 is driven to move by the punching electric slider 2411;

[0073] An upper base part, including a first mounting plate 2403 provided above the first substrate 2401. A first telescopic member 2404 is provided at the top of the first mounting plate 2403, and an upper die base 2406 is installed at the movable end of the first telescopic member 2404 through the first mounting plate 2403;

[0074] A plurality of punching dies 6, each including a lower die 62 provided at the top of the lower die base 2407. A punching channel 64 is provided on the lower die 62. The punching die 6 further includes an upper template 63 provided at the bottom of the upper die base 2406. A punching column 65 is provided at a position corresponding to the punching channel 64 on the upper template 63. The lower die 62 and the upper template 63 can both move in the first direction;

[0075] A plurality of positioning components 7 are provided at the top of the lower die base 2407 and the bottom of the upper die base 2406 for fixing the lower die 62 or the upper template 63;

[0076] As Figure 3 、 Figure 4 、 Figure 5 and Figure 6 shown, wherein, first mounting columns 2402 are installed at the four corners of the first substrate 2401. The top of the first mounting columns 2402 passes through the first mounting plate 2403 and is connected with nuts to realize the installation of the first mounting plate 2403. Additionally, optionally, a guide post 2405 is further provided between the first mounting plate 2403 and the first substrate 2401. The guide post 2405 passes through the upper die base 2406 to improve the stability of the up and down movement of the upper die base 2406;

[0077] The number of punching dies 6 can be set to two, one for punching in the middle of the steel, and one for punching at the front and rear edges of the steel. Among them, the movable end of the first telescopic member 2404 penetrates through the first mounting plate 2403 and is installed with a flange 2410. The flange 2410 is detachably connected to the upper die base 2406. A limiting plate 66 is provided at the top of the punching column 65. The cross-section of the limiting plate 66 is larger than that of the punching column 65. A channel that fits the punching column 65 and the limiting plate 66 is provided on the upper template 63. Therefore, under the action of gravity, the limiting plate 66 is placed inside the channel to ensure that the punching column 65 falls vertically. When punching operations are carried out, the flange 2410 abuts against the flange 2410, ensuring that the punching column 65 stably punches holes;

[0078] In addition, the punching columns 65 of the unused punching dies 6 will also move downward with the upper die base 2406. However, after contacting the steel, since the limiting plate 66 does not contact the flange 2410, the punching columns 65 will not impact the steel to form mounting holes.

[0079] In some embodiments, die-changing guide rails 2408 are provided at the bottom end of the upper die base 2406 and the top end of the lower die base 2407. The extending direction of each die-changing guide rail 2408 is the first direction. Die-changing electric sliders 68 are provided at the top end of the lower die 62 and the bottom end of the upper template 63. The die-changing guide rails 2408 are fitted with the die-changing electric sliders 68;

[0080] Such as Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, among them, the lower die 62 is installed at the top end of the lower template 61. Mounting grooves 67 are provided at the bottom end of the lower template 61 and the top end of the upper template 63. The die-changing electric sliders 68 are provided in the mounting grooves 67 to achieve the purpose of stable movement of the lower template 61 and the upper template 63. In addition, a discharge channel 2409 is provided at the middle parts of the lower template 61 and the lower die base 2407 corresponding to the punching channel 64, so that the waste formed after punching can be discharged from the discharge channel 2409, improving the convenience of punching.

[0081] In some embodiments, the positioning assembly 7 includes a number of fixed side plates 72 provided at the top end of the lower die base 2407 or the bottom end of the upper die base 2406. The fixed side plates 72 are divided into two groups, and the two groups of fixed side plates 72 are respectively located on both sides of the lower die 62 or the upper template 63 in the second direction; among them, the second direction is Figure 3 the front-back direction in

[0082] A guiding sleeve 73 is embedded in the middle of the fixed side plate 72. An electromagnet 74 is provided at the end of the guiding sleeve 73 away from the lower die 62 or the upper template 63. A buffer spring 75 connected to the electromagnet 74 is arranged inside the guiding sleeve 73. A permanent magnet 76 is provided at the end of the buffer spring 75 away from the electromagnet 74. A rubber frustum 77 is provided at the end of the permanent magnet 76 away from the buffer spring 75. A positioning hole 71 is provided on the side surface of the lower die 62 or the upper template 63 close to the rubber frustum 77.

[0083] As Figure 3 , Figure 4 , Figure 5 and Figure 6 shown, after the die-changing electric slider 68 drives the lower die 62 or the upper template 63 to reach the designated position, the electromagnet 74 is connected to a positive current. The mutually approaching ends of the electromagnet 74 and the permanent magnet 76 form the same-sex magnetic poles. The permanent magnet 76 drives the rubber frustum 77 to be stuck into the positioning hole 71 to achieve the positioning purpose. Among them, the end of the rubber frustum 77 close to the positioning hole 71 is a small circle, and the other end is a large circle. On the one hand, the rubber frustum 77 reduces the damage to the permanent magnet 76 caused by impact. On the other hand, when there is a short position deviation after the die-changing electric slider 68 moves, it can play a guiding role to facilitate accurate positioning and insertion.

[0084] When it is necessary to cancel the positioning, only the electromagnet 74 needs to be connected to a reverse current. The mutually approaching ends of the electromagnet 74 and the permanent magnet 76 form opposite-sex magnetic poles, driving the permanent magnet 76 and the rubber frustum 77 to retract into the guiding sleeve 73. Among them, because a buffer spring 75 is provided between the permanent magnet 76 and the electromagnet 74, it can avoid the mutual collision of the two and reduce the stress of magnetic attraction.

[0085] In some embodiments, the first correction component 25 includes a second substrate 2501 that can move along the punching guide rail 22. A second telescopic member 2505 is provided at the bottom end of the second substrate 2501. The movable end of the second telescopic member 2505 penetrates through the second substrate 2501 and is detachably installed with a correction base block 2507. A compensation convex block 2508 is provided at the top end of the correction base block 2507. Among them, there are different correction base blocks 2507 for different molds. Therefore, the movable end of the second telescopic member 2505 penetrates through the second substrate 2501 and is installed with a third mounting plate 2506. The bottom end of the correction base block 2507 is provided with a bottom plate, and the bottom plate is detachably connected to the third mounting plate 2506 through bolts, thereby realizing the disassembly and installation of each correction base block 2507, which is convenient for adapting to different types of molds.

[0086] A second mounting plate 2504 is installed above the second substrate 2501. A third telescopic member 2510 is installed at the top end of the second mounting plate 2504. The movable end of the third telescopic member 2510 penetrates through the second mounting plate 2504 and is detachably installed with a T-shaped mounting strip 2511. A triangular strip 2512 is provided at the bottom end of the T-shaped mounting strip 2511.

[0087] As Figure 7 and Figure 8 shown, due to the downward punching of the punching assembly 24, there will be a slight downward deformation at the edge of the installation hole. The second telescopic member 2505 pushes the correction base block 2507 and the compensation convex block 2508 upward. When the compensation convex block 2508 passes through the installation hole and abuts against the bottom end of the second installation plate 2504, the correction base block 2507 flattens and corrects the slight deformation, achieving the purpose of eliminating the slight deformation;

[0088] In addition, during the correction process, the third telescopic member 2510 pushes the triangular strip 2512 downward to form indentations on the surface of the steel. During the subsequent cold bending process, the steel will be more likely to use the indentations as the bending points. On the one hand, the effect of cold bending is improved. On the other hand, since the stress at the edge of the installation hole is weak, the indentations reduce the material offset during the cold bending process, avoiding the situation where the deformation is caused by the material offset pulling the edge of the installation hole; In addition, a second through hole 2509 is provided at the position of the T-shaped installation strip 2511 corresponding to the second installation plate 2504. The T-shaped installation strip 2511 fits against the side wall of the second through hole 2509 to improve the stability of the up and down movement of the T-shaped installation strip 2511. Optionally, a first correction electric slider 2502 is provided at the bottom end of the second substrate 2501, and the first correction electric slider 2502 fits with the punching guide rail 22 to ensure the stable movement of the second substrate 2501. Further optionally, second installation posts 2503 are provided at the four corners of the top end of the second substrate 2501. The top ends of the second installation posts 2503 pass through the second installation plate 2504 and are connected with nuts to achieve the fixed installation of the second installation plate 2504.

[0089] In some embodiments, the stress elimination assembly 33 includes:

[0090] An installation assembly, including an installation straight plate 3303 provided between adjacent roll pressing assemblies 32. The normal direction of the installation straight plate 3303 is the first direction;

[0091] A rotating assembly, including two turntables 3312 distributed on both sides of the bottom of the installation straight plate 3303 along the second direction. The arc-shaped side surfaces of the turntables 3312 are evenly embedded with balls 3313. Two balls 3313 in the same turntable 3312 always abut against the surface of the steel; wherein, the second direction is Figure 2 the front-back direction in Figure 9 and Figure 10 is shown as the left-right direction in

[0092] A driving assembly, provided on the installation straight plate 33, for driving the two turntables 3312 to rotate synchronously and in opposite directions;

[0093] As Figure 2 、 Figure 9 and Figure 10As shown, first, since the number of punching dies 6 is set to two, one for punching in the middle of the steel, and one for punching at the front and rear edges of the steel. Refer to Figure 9 , during the cold bending process of the steel, there is a middle part and two side parts. Therefore, the first type of mounting holes will be evenly distributed in the middle part, and the second type of mounting holes will be evenly distributed on the two side parts.

[0094] When making the first type of mounting holes, the two turntables 3312 rotate synchronously and in opposite directions. Through the rotation of the turntables 3312, the balls 3313 move along the surface of the steel, pushing the offset material towards the edge of the mounting holes in the middle part, reducing the deformation of the mounting hole edges during the cold bending process, effectively solving the problem of deformation of the mounting hole edges caused by cold bending. When making the second type of mounting holes, only need to control the turntable 3312 to rotate in the opposite direction, which will not be elaborated here;

[0095] Optionally, a fifth mounting plate 3301 is provided at the top of the mounting straight plate 3303, and first L-shaped plates 3302 are provided at the four corner positions of the fifth mounting plate 3301. By clamping the four first L-shaped plates 3302 into the edge of the frame of the two roller pressing components 32, the position of the mounting straight plate 3303 is limited, and only by supplementing the screw holes with bolts can the detachable assembly be realized;

[0096] Further optionally, two upper shafts 3304 are rotatably mounted on the top of the mounting straight plate 3303. Transmission gears 3306 are sleeved in the middle of the two upper shafts 3304, and the two transmission gears 3306 are meshed and driven with each other. One end of each of the two upper shafts 3304 is provided with a driving pulley 3305. A mounting cross plate 3308 is mounted at the bottom of the mounting straight plate 3303. Lower shafts 3309 are rotatably mounted at both ends of the mounting cross plate 3308 along the second direction. The two turntables 3312 are respectively mounted on the two lower shafts 3309, and driven pulleys 3310 are also sleeved on the two lower shafts 3309. A transmission belt 3311 is sleeved between the driven pulley 3310 and the corresponding driving pulley 3305. A driving motor 3307 is mounted at the top of the mounting straight plate 3303, and the output shaft of the driving motor 3307 is connected to one of the upper shafts 3304. Then, the driving motor 3307 drives the rotation of this upper shaft 3304. Through the transmission effect of the driving pulley 3305, the driven pulley 3310 and the transmission belt 3311, the turntable 3312 on this side is driven to rotate. And through the meshing and driving of the two transmission gears 3306 with each other, and in cooperation with the driving pulley 3305, the driven pulley 3310 and the transmission belt 3311 on the other side, the turntable 3312 on the other side is driven to rotate, thus realizing the synchronous and reverse rotation of the two turntables 3312.

[0097] In some embodiments, the production line further includes a feeding mechanism 1, and the feeding mechanism 1 is arranged on the side of the punching mechanism 2 away from the cold bending forming mechanism 3 along the first direction for feeding steel to the punching mechanism 2;

[0098] The loading mechanism 1 includes a second flattening machine 15, a horizontal spiral accumulator 14, a shearing butt welder 13, a first flattening machine 12, and an uncoiler 11 arranged in the first direction away from the punching mechanism 2 side;

[0099] As Figure 1 shown, the steel is released from the uncoiler 11, passes through the first flattening machine 12, then enters the horizontal spiral accumulator 14 through the shearing butt welder 13, and finally is sent to the punching mechanism 2 through the second flattening machine 15. Among them, the first flattening machine 12 eliminates the stress of the coiled steel, and the shearing butt welder 13 shears, aligns, and welds the tail of the steel of the previous steel coil with the head of the steel of the next steel coil to achieve continuous connection of the steel. The horizontal spiral accumulator 14 balances the speed difference between the front and back processes and avoids the speed reduction caused by the shearing butt welder 13. In addition, the second flattening machine 15 plays a role in pulling the steel and ensuring that the steel maintains a stable tension.

[0100] In some embodiments, the production line further includes a correction and cutting mechanism 4. The correction and cutting mechanism 4 is arranged in the first direction on the side of the cold bending forming mechanism 3 away from the punching mechanism 2, and includes a cutting frame 41. A cutting guide rail 42 is provided at the top of the cutting frame 41. The direction of the cutting guide rail 42 is the first direction. A second correction component 43 and a cutting component 44 that can move along the first direction are provided on the cutting guide rail 42. The cutting component 44 is used to cut the steel, and the second correction component 43 is used to monitor and eliminate the deformation of the edge of the mounting hole. As Figure 2 and Figure 11 shown, both the cutting component 44 and the second correction component 43 move along the cutting guide rail 42. The cutting component 44 is the same as the existing servo cutting and will not be elaborated. The second correction component 43 can perform final correction before cutting to ensure the strength of the steel.

[0101] In some embodiments, the second correction component 43 includes:

[0102] A frame part, including a U-shaped mounting plate 4301 arranged on the cutting guide rail 42 and movable along the first direction. A middle mounting plate 4303 is provided in the middle of the U-shaped mounting plate 4301. The normal direction of the middle mounting plate 4303 is the first direction. A profile channel 4304 is provided in the middle of the middle mounting plate 4303; wherein, a second correction electric slider 4302 is provided at the bottom end of the U-shaped mounting plate 4301. The second correction electric slider 4302 fits with the cutting guide rail 42 and can move along the cutting guide rail 42;

[0103] A plurality of monitoring parts are arranged on the end face of the intermediate mounting plate 4303 close to the cold bending forming mechanism 3, including a laser emitter 4305 and a laser receiver 4306. The laser receiver 4306 is used to receive the laser emitted by the laser emitter 4305. The path of the laser is located in the plane of the outer surface of the profile channel 4304 and is perpendicular to the normal of the intermediate mounting plate 4303;

[0104] A plurality of correction parts are arranged on the end face of the intermediate mounting plate 4303 far from the cold bending forming mechanism 3, corresponding to each monitoring part one by one, including a rotatable grinding roller 4310 and a fourth telescopic member 4308. The axial direction of the grinding roller 4310 is parallel to the path of the laser. The fourth telescopic member 4308 drives the grinding roller 4310 to move from the U-shaped mounting plate 4301 towards the outer surface of the profile channel 4304;

[0105] As Figure 2 and Figure 11 shown, the steel passing through the profile channel 4304 is calibrated by the laser emitter 4305 and the laser receiver 4306. If the steel deforms, the deformed part will block the laser, achieving the purpose of monitoring. Then, the grinding roller 4310 is pushed by the fourth telescopic member 4308, and the deformed part is extruded and polished by the grinding roller 4310, thereby completely eliminating the deformation at the edge of the mounting hole. Optionally, one correction part has two fourth telescopic members 4308. Both fourth telescopic members 4308 are installed on the second L-shaped plate 4307. The second L-shaped plate 4307 is installed on the intermediate mounting plate 4303. The extending ends of the fourth telescopic members 4308 are both installed with fixed shafts 4309 through shaft seats. The grinding roller 4310 is sleeved in the middle of the fixed shaft 4309. One end of the fixed shaft 4309 is connected to the output shaft of the grinding motor 4311. The grinding motor 4311 is installed on the extending end of the fourth telescopic member 4308. The fixed shaft 4309 and the grinding roller 4310 are driven by the grinding motor 4311 to achieve the purpose of grinding. Then, the grinding roller 4310 is driven by the fourth telescopic member 4308 to approach and extrude the steel, playing the functions of correcting flattening and synchronously grinding. In addition, because the monitoring part is arranged at the end close to the cold bending forming mechanism 3, while the correction part is arranged at the other end, it is convenient to perform monitoring first and then correction.

[0106] In some embodiments, a stacking mechanism 5 is further arranged behind the correction and cutting mechanism 4 for stacking and palletizing U-shaped steel or C-shaped steel. Optionally, the stacking mechanism 5 can be a gantry palletizer.

[0107] In some embodiments, the above-mentioned first telescopic member 2404 to the fourth telescopic member 4308 can all be selected as electric push rods or electro-hydraulic push rods. The start, stop and adjustment of each telescopic member, electric slider and motor and other electrical components are controlled by an automated control system. This can be achieved through existing programming and will not be elaborated here.

[0108] In the description of this specification, terms such as "connection", "installation", "fixation", etc. shall be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0109] In the description of this specification, the description of terms such as "one embodiment", "some embodiments", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0110] The above are only the preferred embodiments of this application and are not used to limit this application. For those skilled in the art, this application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. A fully automatic cold bending forming production line, characterized in that, Including: A punching mechanism (2), including a plurality of punching components (24) arranged along a first direction, and a first correction component (25) located on one side of the punching components (24) along the first direction. The punching components (24) are used to punch the steel from top to bottom to form mounting holes, and the first correction component (25) is used to eliminate the deformation at the edge of the mounting holes and form indentations at the bending positions on the top surface of the steel. The indentations are located on one side of the mounting holes; A cold bending forming mechanism (3), which is arranged on the side of the first correction component (25) away from the punching components (24) along the first direction, includes a plurality of roll pressing components (32) for cold bending forming, and a stress elimination component (33) arranged between two roll pressing components (32) in the middle. The stress elimination component (33) is used to eliminate the stress concentration phenomenon around the mounting holes during cold bending forming; The punching mechanism (2) further includes a plurality of leveling and conveying components (23). Each of the leveling and conveying components (23) is arranged on both sides of the punching components (24) and both sides of the first correction component (25) along the first direction, and is used to drive the steel to sequentially pass through each punching component (24) and the first correction component (25) and move towards the cold bending forming mechanism (3) side along the first direction.

2. The fully automatic cold bending forming production line according to claim 1, wherein The punching mechanism (2) further includes a punching machine frame (21) and a punching guide rail (22). The extending direction of the punching guide rail (22) is the first direction, and the punching components (24) and the first correction component (25) can move along the punching guide rail (22).

3. The fully automatic cold bending forming production line according to claim 2, wherein, The punching component (24) includes: A lower base part, including a first substrate (2401) that can move on the punching guide rail (22). A lower die base (2407) is provided at the top end of the first substrate (2401); An upper base part, including a first mounting plate (2403) arranged above the first substrate (2401). A first telescopic member (2404) is provided at the top end of the first mounting plate (2403). The movable end of the first telescopic member (2404) penetrates through the first mounting plate (2403) and is installed with an upper die base (2406); A plurality of punching dies (6), each including a lower die (62) provided at the top end of the lower die base (2407). A punching channel (64) is provided on the lower die (62). The punching die (6) further includes an upper template (63) provided at the bottom end of the upper die base (2406). A punching column (65) is provided at a position corresponding to the punching channel (64) on the upper template (63). The lower die (62) and the upper template (63) can both move along the first direction; A plurality of positioning components (7), which are arranged at the top end of the lower die base (2407) and the bottom end of the upper die base (2406), and are used to fix the lower die (62) or the upper template (63).

4. The fully automatic cold bending forming production line according to claim 3, wherein A die change guide rail (2408) is provided at the bottom end of the upper die base (2406) and the top end of the lower die base (2407). The extending direction of each die change guide rail (2408) is the first direction. A die change electric slider (68) is provided at the top end of the lower die (62) and the bottom end of the upper template (63). The die change guide rail (2408) is fitted with the die change electric slider (68).

5. The fully automatic cold bending forming production line according to claim 3, characterized in that The positioning assembly (7) includes a number of fixed side plates (72) provided at the top end of the lower die base (2407) or the bottom end of the upper die base (2406). Each of the fixed side plates (72) is divided into two groups, and the two groups of fixed side plates (72) are respectively located on both sides of the lower die (62) or the upper template (63) in the second direction; A guide sleeve (73) is embedded in the middle of the fixed side plate (72). An electromagnet (74) is provided at the end of the guide sleeve (73) away from the lower die (62) or the upper template (63). A buffer spring (75) connected to the electromagnet (74) is provided inside the guide sleeve (73). A permanent magnet (76) is provided at the end of the buffer spring (75) away from the electromagnet (74). A rubber frustum (77) is provided at the end of the permanent magnet (76) away from the buffer spring (75). A positioning hole (71) is provided on the side surface of the lower die (62) or the upper template (63) close to the rubber frustum (77).

6. The fully automatic cold bending forming production line according to claim 2, wherein, The first correction assembly (25) includes a second substrate (2501) that can move along the punching guide rail (22). A second telescopic member (2505) is provided at the bottom end of the second substrate (2501). The movable end of the second telescopic member (2505) penetrates through the second substrate (2501) and is detachably installed with a correction base block (2507). A compensation convex block (2508) is provided at the top end of the correction base block (2507); A second mounting plate (2504) is installed above the second substrate (2501). A third telescopic member (2510) is installed at the top end of the second mounting plate (2504). The movable end of the third telescopic member (2510) penetrates through the second mounting plate (2504) and is detachably installed with a T-shaped mounting strip (2511). A triangular strip (2512) is provided at the bottom end of the T-shaped mounting strip (2511).

7. The fully automatic cold bending forming production line according to claim 1, characterized in that The stress relief assembly (33) includes: An installation assembly, including an installation straight plate (3303) provided between adjacent roll pressing assemblies (32). The normal direction of the installation straight plate (3303) is the first direction; A rotating assembly, including two turntables (3312) distributed on both sides of the bottom of the installation straight plate (3303) in the second direction. The arc side surface of the turntable (3312) is evenly embedded with balls (3313). Two of the balls (3313) in the same turntable (3312) are always in contact with the surface of the steel; A driving assembly, provided on the installation straight plate (3303), for driving the two turntables (3312) to rotate synchronously and in opposite directions.

8. The fully automatic cold bending forming production line according to claim 1, wherein, The production line further includes a loading mechanism (1). The loading mechanism (1) is arranged along a first direction on the side of the punching mechanism (2) away from the cold bending and forming mechanism (3) for conveying steel to the punching mechanism (2). The loading mechanism (1) includes a second leveling machine (15), a horizontal spiral loop (14), a shearing butt welder (13), a first leveling machine (12), and an unwinder (11) arranged in sequence along the first direction on the side away from the punching mechanism (2).

9. The fully automatic cold bending forming production line according to claim 1, characterized in that, The production line further includes a straightening and cutting mechanism (4). The straightening and cutting mechanism (4) is arranged along the first direction on the side of the cold bending and forming mechanism (3) away from the punching mechanism (2), and includes a cutting frame (41). A cutting guide rail (42) is provided at the top of the cutting frame (41). The direction of the cutting guide rail (42) is the first direction. A second straightening component (43) and a cutting component (44) that can move along the first direction are arranged on the cutting guide rail (42). The cutting component (44) is used for cutting steel, and the second straightening component (43) is used for monitoring the deformation of the edge of the mounting hole and eliminating the deformation.

10. The fully automatic cold bending forming production line according to claim 9, characterized in that, The second straightening component (43) includes: A frame part, including a U-shaped mounting plate (4301) arranged on the cutting guide rail (42) and movable along the first direction. A middle mounting plate (4303) is provided in the middle of the U-shaped mounting plate (4301). The normal direction of the middle mounting plate (4303) is the first direction. A profile channel (4304) is provided in the middle of the middle mounting plate (4303). A plurality of monitoring parts are arranged on the end face of the middle mounting plate (4303) close to the cold bending and forming mechanism (3), and include a laser emitter (4305) and a laser receiver (4306). The laser receiver (4306) is used for receiving the laser emitted by the laser emitter (4305). The path of the laser is located in the plane of the outer surface of the profile channel (4304) and is perpendicular to the normal of the middle mounting plate (4303). A plurality of straightening parts are arranged on the end face of the middle mounting plate (4303) away from the cold bending and forming mechanism (3), and correspond to the respective monitoring parts one by one. Each straightening part includes a rotatable grinding roller (4310) and a fourth telescopic member (4308). The axis direction of the grinding roller (4310) is parallel to the path of the laser. The fourth telescopic member (4308) drives the grinding roller (4310) to move from the U-shaped mounting plate (4301) towards the outer surface of the profile channel (4304).

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