Full-automatic cold roll forming production line

Abstract

The application discloses a full-automatic cold bending forming production line, and sets a punching assembly before cold bending forming, so that the subsequent punching operation is not needed, the strength reduction of the profile caused by the subsequent punching is avoided, the processing efficiency is improved, the purpose of full-automatic production is achieved, further, the first correcting assembly, the stress relieving assembly and the second correcting assembly are respectively arranged between the punching and the cold bending forming, in the cold bending forming process and between the cold bending forming and the cutting, the deformation possibly occurring at the edges of the mounting holes is corrected for multiple times, the deformation of the edges of the mounting holes is effectively avoided, and the strength reduction of the steel caused by the punching is avoided.

Description

Technical Field

[0001] This invention relates to the field of cold bending forming technology, and more particularly to a fully automated cold bending forming production line. Background Technology

[0002] C-shaped and U-shaped steel profiles are commonly used. They are typically formed into specific shapes by bending steel using cold bending forming equipment. This equipment generally includes a cold bending forming mechanism and a servo cutting mechanism. The cold bending forming mechanism consists of multiple roller pressing components, which are composed of rollers of different shapes. As the steel passes through the roller pressing components one by one, its edges are gradually bent, eventually forming the desired cross-sectional shape. This process does not involve heating, hence the name cold bending forming. Then, the cutting component of the servo cutting mechanism moves along a track, causing the cutting blade of the cutting component to move synchronously with the profile, ensuring that the cutting blade stably cuts the profile.

[0003] However, the existing cold bending forming equipment does not have a punching function in its production line. After the profile is cut, each section needs to be manually sent to the punching machine to punch holes to form installation holes for subsequent assembly. This production method not only cannot be automated for batch operation, but also causes local deformation and uneven internal stress in the profile after punching, which affects the strength of the profile. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the existing technology, it is desirable to provide a fully automated cold bending forming production line.

[0005] The fully automated cold bending forming production line provided by this invention includes:

[0006] A punching mechanism includes a plurality of punching assemblies arranged along a first direction, and a first straightening assembly located on one side of the punching assemblies along the first direction. The punching assemblies are used to punch steel from top to bottom to form a mounting hole. The first straightening assembly is used to eliminate deformation at the edge of the mounting hole and to form an indentation at a bend on the top surface of the steel, the indentation being located on one side of the mounting hole.

[0007] The cold bending forming mechanism is located on the side of the first straightening component away from the punching component along a first direction. It includes a plurality of roller pressing components for cold bending forming, and a stress relief component located between two roller pressing components in the middle. The stress relief component is used to eliminate the stress concentration phenomenon around the mounting hole during cold bending forming.

[0008] The punching mechanism also includes several leveling and conveying components. Each leveling and conveying component is disposed on both sides of the punching component and both sides of the first straightening component along the first direction, and is used to drive the steel to move sequentially through each punching component and the first straightening component along the first direction toward the cold bending forming mechanism.

[0009] Preferably, the punching mechanism further includes a punching frame and a punching guide rail, wherein the extension direction of the punching guide rail is a first direction, and the punching assembly and the first straightening assembly can move along the punching guide rail.

[0010] Preferably, the punching assembly includes:

[0011] The lower base includes a first substrate that can move along the punching guide rail, and a lower mold base is provided at the top of the first substrate;

[0012] The upper base includes a first mounting plate disposed above the first substrate, a first telescopic member is provided at the top of the first mounting plate, and an upper mold base is mounted through the movable end of the first telescopic member through the first mounting plate.

[0013] A plurality of punching dies, each including a lower die disposed at the top of the lower die base, the lower die having a punching channel, the punching die also including an upper template disposed at the bottom of the upper die base, the upper template having a punching post at the position corresponding to the punching channel, both the lower die and the upper template being movable along a first direction;

[0014] Several positioning components are disposed at the top of the lower mold base and the bottom of the upper mold base for fixing the lower mold or the upper template.

[0015] Preferably, both the bottom end of the upper mold base and the top end of the lower mold base are provided with mold changing guide rails, and the extension direction of each mold changing guide rail is a first direction. Both the top end of the lower mold and the bottom end of the upper mold plate are provided with mold changing electric sliders, and the mold changing guide rails and the mold changing electric sliders are matched.

[0016] Preferably, the positioning component includes a plurality of fixed side plates disposed at the top of the lower mold base or the bottom of the upper mold base, each of the fixed side plates being divided into two groups, and the two groups of fixed side plates being respectively located on both sides of the lower mold or the upper mold along the second direction;

[0017] A guide sleeve is embedded in the middle of the fixed side plate. An electromagnet is provided at the end of the guide sleeve away from the lower mold or 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 mold or upper template near the rubber frustum.

[0018] Preferably, the first correction component includes a second base plate that can move along the punching guide rail, the bottom end of the second base plate is provided with a second telescopic member, the movable end of the second telescopic member passes through the second base plate and is detachably mounted with a correction base block, and the top end of the correction base block is provided with a compensation protrusion.

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

[0020] Preferably, the stress relief assembly includes:

[0021] The mounting assembly includes a mounting straight plate disposed between adjacent roller pressing assemblies, wherein the normal direction of the mounting straight plate is a first direction;

[0022] The rotating assembly includes two turntables distributed along the second direction on both sides of the bottom of the mounting plate. Ball bearings are uniformly embedded in the arc-shaped side surface of the turntables, and two of the ball bearings in the same turntable are always in contact with the surface of the steel.

[0023] A drive assembly, located on the mounting plate, is used to drive the two turntables to rotate synchronously and in opposite directions.

[0024] Preferably, the production line further includes a feeding mechanism, which is located along a first direction on the side of the punching mechanism away from the cold bending forming mechanism, for feeding steel to the punching mechanism;

[0025] The feeding mechanism includes a second leveling machine, a horizontal spiral looper, a shearing and welding machine, a first leveling machine, and an unwinding machine arranged along the first direction away from the punching mechanism.

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

[0027] Preferably, the second corrective component includes:

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

[0029] Several monitoring units are located on the intermediate mounting plate near the end face of the cold bending forming mechanism, including 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 on the plane of the outer surface of the profile channel and is perpendicular to the normal of the intermediate mounting plate.

[0030] Several straightening parts are provided on the intermediate mounting plate away from the end face of the cold bending forming mechanism, and each corresponds to one of the monitoring parts. Each part includes a self-rotating grinding roller and a fourth telescopic member. The axial direction of the grinding roller is parallel to the path of the laser. The fourth telescopic member drives the grinding roller to move from the U-shaped mounting plate toward the outer surface of the profile channel.

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

[0032] 1. The present invention sets up a punching mechanism before the cold bending forming mechanism, and punching is performed before cold bending forming, so that punching is not performed after the steel is cut. The deformation formed during punching is eliminated by the first straightening component, so as to avoid the impact of punching on the cold bending forming. Furthermore, the punching component and the first straightening component can move along the first direction and can move synchronously with the steel. First, the synchronization of the two with the material speed can eliminate downtime, ensure continuous punching and straightening, realize automated production, and improve production efficiency. Second, the consistent speed will ensure the smoothness of the cut surface and avoid the situation where the two collide laterally with the steel due to the speed difference, causing the steel to deform near the mounting hole.

[0033] 2. The punching assembly is also equipped with two sets of mold changing guide rails, one upper and one lower. The upper and lower halves of multiple punching dies are respectively mounted on the two sets of mold changing guide rails by the mold changing electric slider. The mold changing electric slider drives the upper and lower halves of different dies to move, so as to achieve the upper and lower correspondence of the same die. The two parts are then positioned by the positioning component. This not only ensures the stability of the die during the punching process, but also enables the mold changing electric slider to be controlled by an automated electronic control system, so as to achieve the purpose of automatic mold changing and improve the efficiency of die changing.

[0034] 3. The first straightening component is equipped with a second telescopic component, a straightening base block, and a compensating protrusion. Because the punching component punches downwards, the edge of the mounting hole will have a slight downward deformation. The second telescopic component pushes the straightening base block and the compensating protrusion to move upwards. When the compensating protrusion passes through the mounting hole and abuts against the bottom of the second mounting plate, the straightening base block flattens and straightens the slight deformation, thereby eliminating the slight deformation. Furthermore, a third telescopic component and three triangular strips are also provided. During the straightening process, the third telescopic component pushes the triangular strips downwards to form an indentation on the steel surface. In the subsequent cold bending process, the steel will be more likely to bend at the indentation point. On the one hand, this improves the cold bending effect. On the other hand, because the stress at the edge of the mounting hole is relatively weak, the indentation reduces the material displacement during the cold bending process, avoiding the deformation caused by the material displacement pulling the edge of the mounting hole.

[0035] 4. A stress relief component is set in the cold bending forming mechanism. Although the deformation caused by material offset is reduced by indentation, a small amount of material still concentrates at the bending point during the cold bending process. At this time, by rotating the turntable, the ball moves along the steel surface and pushes the offset material to the edge of the mounting hole, reducing the deformation of the mounting hole edge during the cold bending process and effectively solving the problem of mounting hole edge deformation caused by cold bending.

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

[0037] In summary, by setting up a punching assembly before cold bending, subsequent punching operations are eliminated. This not only avoids the reduction in profile strength caused by subsequent punching but also improves processing efficiency, achieving the goal of fully automated production. Furthermore, by placing the first straightening assembly, stress relief assembly, and second straightening assembly between punching and cold bending, during cold bending, and between cold bending and cutting, the possible deformation at the edge of the mounting hole is corrected multiple times, effectively eliminating deformation at the edge of the mounting hole and thus avoiding the reduction in steel strength caused by punching.

[0038] It should be understood that the description in the Summary of the Invention is not intended to limit the key or essential features of the embodiments of the present invention, nor is it intended to restrict the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0039] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0040] Figure 1 A structural block diagram of a fully automated cold bending forming production line provided in an embodiment of this application;

[0041] Figure 2 A schematic diagram of the punching mechanism, cold bending mechanism, and straightening and cutting mechanism in a fully automatic cold bending forming production line provided in this application embodiment;

[0042] Figure 3 This is a schematic diagram of the punching assembly in a fully automated cold bending forming production line provided in an embodiment of this application;

[0043] Figure 4 A cross-sectional view of the punching component of the fully automated cold bending forming production line provided in this application embodiment;

[0044] Figure 5 for Figure 4 A magnified schematic diagram of a portion of region A in the middle;

[0045] Figure 6 This is a schematic diagram of the punching die in a fully automated cold bending forming production line provided in an embodiment of this application;

[0046] Figure 7 This is a schematic diagram of the structure of the first straightening component in the fully automated cold bending forming production line provided in the embodiments of this application;

[0047] Figure 8 A cross-sectional structural diagram of the straightening base block in the fully automated cold bending forming production line provided in the embodiments of this application;

[0048] Figure 9 A schematic diagram of the installation structure for mounting straight plates in a fully automated cold bending forming production line provided in this application embodiment;

[0049] Figure 10 A schematic diagram of the installation structure of the turntable and ball bearings in the fully automatic cold bending forming production line provided in the embodiments of this application;

[0050] Figure 11 This is a schematic diagram of the structure of the second straightening component in the fully automated cold bending forming production line provided in the embodiments of this application.

[0051] Numbering on the map:

[0052] 1. Feeding mechanism; 11. Unwinding machine; 12. First leveling machine; 13. Shearing and welding machine; 14. Horizontal spiral looper; 15. Second leveling machine;

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

[0054] 2401, First base plate; 2402, First mounting post; 2403, First mounting plate; 2404, First telescopic component; 2405, Guide post; 2406, Upper mold base; 2407, Lower mold base; 2408, Mold changing guide rail; 2409, Material discharge channel; 2410, Flange; 2411, Punching electric slider;

[0055] 2501, Second base plate; 2502, First corrective electric slider; 2503, Second mounting post; 2504, Second mounting plate; 2505, Second telescopic component; 2506, Third mounting plate; 2507, Corrective base block; 2508, Compensating protrusion; 2509, Second through hole; 2510, Third telescopic component; 2511, T-shaped mounting strip; 2512, Triangular strip;

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

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

[0058] 4. Correcting and cutting mechanism; 41. Cutting frame; 42. Cutting guide rail; 43. Second correcting assembly; 44. Cutting assembly;

[0059] 4301. U-shaped mounting plate; 4302. Second electric straightening slider; 4303. Intermediate mounting plate; 4304. Profile channel; 4305. Laser emitter; 4306. Laser receiver; 4307. Second L-shaped plate; 4308. Fourth telescopic component; 4309. Fixed shaft; 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 post; 66. Restriction plate; 67. Mounting groove; 68. Electric slider for mold changing;

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

[0063] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0064] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0065] Please refer to Figures 1 to 11 The embodiments of the present invention provide a fully automated cold bending forming production line, comprising:

[0066] The punching mechanism 2 includes a plurality of punching components 24 arranged along a first direction, and a first straightening component 25 located on one side of the punching components 24 along the first direction. The punching components 24 are used to punch steel from top to bottom to form mounting holes. The first straightening component 25 is used to eliminate deformation at the edge of the mounting hole and to form an indentation at the bend on the top surface of the steel, the indentation being located on one side of the mounting hole; wherein, the first direction is... Figure 2 The left and right directions in the middle,

[0067] The cold bending forming mechanism 3 is located along the first direction on the side of the first straightening component 25 away from the punching component 24. It includes several roller pressing components 32 for cold bending forming, and a stress relief component 33 located between two roller pressing components 32 in the middle. The stress relief component 33 is used to eliminate the stress concentration phenomenon around the mounting hole during cold bending forming. The roller pressing components 32 are the same as those in existing cold bending forming equipment, consisting of a frame, several roller pressing cylinders located in the middle of the frame, and a motor and transmission mechanism for driving each roller pressing cylinder to rotate. It will not be described in detail here. The cold bending forming mechanism 3 also includes a cold bending frame 31, and the roller pressing components 32 and the stress relief component 33 are both mounted on the cold bending frame 31.

[0068] The punching mechanism 2 also includes several leveling and conveying components 23. Each leveling and conveying component 23 is arranged on both sides of the punching component 24 and the first straightening component 25 along the first direction, and is used to drive the steel to pass through each punching component 24 and the first straightening component 25 in sequence along the first direction and move towards the cold bending forming mechanism 3. The leveling and conveying component 23 consists of two rollers with parallel axes, and a motor that drives the rollers to rotate is installed on the frame on which the rollers are mounted. The steel is squeezed between the two rollers and moves towards the cold bending forming mechanism 3 by the motor driving the rollers to rotate.

[0069] The present invention sets up a punching mechanism 2 before the cold bending forming mechanism 3, and punches before cold bending forming, so that punching is not required after the steel is cut. This not only avoids the reduction of the profile strength caused by subsequent punching, but also improves the processing efficiency and achieves the purpose of fully automated production; and the first straightening component 25 eliminates the deformation formed during punching, so as to avoid the impact of punching on the cold bending form.

[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 being a first direction, and the punching assembly 24 and the first straightening assembly 25 being movable along the punching guide rail 22; Figure 2As shown, the punching assembly 24 and the first straightening assembly 25 can move along the punching guide rail 22 and can move synchronously with the steel. First, the synchronization of the two with the material speed can eliminate downtime, ensure continuous punching and straightening, realize automated production, and improve production efficiency. Second, the consistent speed will ensure the smoothness of the cut surface and avoid the situation where the two collide laterally with the steel due to the speed difference, causing the steel to deform near the mounting hole.

[0071] In some embodiments, the punching assembly 24 includes:

[0072] The lower base includes a first substrate 2401 that can move along the punching guide rail 22. The top of the first substrate 2401 is provided with a lower mold base 2407. The bottom of the first substrate 2401 is provided with a punching electric slider 2411 that fits into it. The punching electric slider 2411 drives the first substrate 2401 to move.

[0073] The upper base includes a first mounting plate 2403 disposed above the first substrate 2401. A first telescopic member 2404 is provided at the top of the first mounting plate 2403. The movable end of the first telescopic member 2404 passes through the first mounting plate 2403 and is mounted on an upper mold base 2406.

[0074] A plurality of punching dies 6 each include a lower die 62 disposed at the top of the lower die base 2407, the lower die 62 being provided with a punching channel 64, the punching die 6 also includes an upper template 63 disposed at the bottom of the upper die base 2406, the upper template 63 being provided with a punching post 65 at the position corresponding to the punching channel 64, and both the lower die 62 and the upper template 63 can move along the first direction;

[0075] Several positioning components 7 are provided at the top of the lower mold base 2407 and the bottom of the upper mold base 2406 to fix the lower mold 62 or the upper template 63.

[0076] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the first base plate 2401 has first mounting posts 2402 installed at its four corners. The top of the first mounting post 2402 passes through the first mounting plate 2403 and is connected to a nut to realize the installation of the first mounting plate 2403. Alternatively, a guide post 2405 is provided between the first mounting plate 2403 and the first base plate 2401. The guide post 2405 passes through the upper mold base 2406 to improve the stability of the upper mold base 2406 moving up and down.

[0077] The number of punching dies 6 can be set to two, one for punching holes in the middle of the steel and the other for punching holes in the front and rear sides of the steel. The movable end of the first telescopic member 2404 passes through the first mounting plate 2403 and is equipped with a flange 2410. The flange 2410 is detachably connected to the upper die base 2406. The top of the punching column 65 is provided with a limiting plate 66. The cross section of the limiting plate 66 is larger than that of the punching column 65. The upper template 63 is provided with a groove that fits with the punching column 65 and the limiting plate 66. Therefore, under the action of gravity, the limiting plate 66 is placed inside the groove to ensure that the punching column 65 falls vertically. During the punching operation, the flange 2410 abuts against the flange 2410 to ensure that the punching column 65 punches stably.

[0078] In addition, the punching post 65 of the unused punching die 6 will also move downward with the upper die base 2406. However, after contacting the steel, the punching post 65 will not impact the steel to form an installation hole because the limiting plate 66 does not contact the flange 2410.

[0079] In some embodiments, the bottom end of the upper mold base 2406 and the top end of the lower mold base 2407 are provided with mold changing guide rails 2408, and the extension direction of each mold changing guide rail 2408 is the first direction. The top end of the lower mold 62 and the bottom end of the upper mold plate 63 are provided with mold changing electric sliders 68, and the mold changing guide rails 2408 and the mold changing electric sliders 68 are matched.

[0080] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the lower mold 62 is installed on the top of the lower template 61. The bottom of the lower template 61 and the top of the upper template 63 are both provided with mounting grooves 67. The mold changing electric slider 68 is 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, the lower template 61 and the lower mold base 2407 are provided with discharge channels 2409 at the corresponding punching channels 64 positions, so that the waste material formed after punching can be discharged from the discharge channels 2409, improving the convenience of punching.

[0081] In some embodiments, the positioning component 7 includes a plurality of fixed side plates 72 disposed at the top end of the lower mold base 2407 or the bottom end of the upper mold base 2406. Each fixed side plate 72 is divided into two groups, and the two groups of fixed side plates 72 are respectively located on both sides of the lower mold 62 or the upper mold plate 63 along a second direction; wherein, the second direction is... Figure 3 The front and back directions in the middle;

[0082] 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 mold 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 mold 62 or the upper template 63 near the rubber frustum 77.

[0083] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, after the electric slider 68 for mold changing moves the lower mold 62 or the upper mold plate 63 to the designated position, the electromagnet 74 is connected to a positive current. The electromagnet 74 and the permanent magnet 76 form like magnetic poles at their close ends. The permanent magnet 76 moves the rubber frustum 77 into the positioning hole 71 to achieve the positioning purpose. The rubber frustum 77 has a small circle at the end close to the positioning hole 71 and a large circle at the other end. The rubber frustum 77 reduces the damage to the permanent magnet 76 caused by impact. On the other hand, when there is a short positional deviation after the electric slider 68 for mold changing moves, it can guide the insertion and facilitate accurate positioning.

[0084] When the positioning needs to be canceled, simply connect the electromagnet 74 to the reverse current. The electromagnet 74 and the permanent magnet 76 form opposite magnetic poles at their close ends, which will drive the permanent magnet 76 and the rubber frustum 77 back to the guide sleeve 73. A buffer spring 75 is provided between the permanent magnet 76 and the electromagnet 74 to prevent them from colliding with each other and reduce the stress of magnetic attraction.

[0085] In some embodiments, the first straightening component 25 includes a second base plate 2501 movable along the punching guide rail 22. The bottom end of the second base plate 2501 is provided with a second telescopic member 2505. The movable end of the second telescopic member 2505 passes through the second base plate 2501 and is detachably mounted with a straightening base block 2507. The top end of the straightening base block 2507 is provided with a compensation protrusion 2508. Different straightening base blocks 2507 are provided for different molds. Therefore, the movable end of the second telescopic member 2505 passes through the second base plate 2501 and is mounted with a third mounting plate 2506. The bottom end of the straightening base block 2507 is provided with a base plate. The base plate is detachably connected to the third mounting plate 2506 by bolts passing through the base plate, thereby realizing the disassembly and installation of each straightening 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 of the second mounting plate 2504. The movable end of the third telescopic member 2510 passes through the second mounting plate 2504 and is detachably mounted with a T-shaped mounting strip 2511. A triangular strip 2512 is provided at the bottom of the T-shaped mounting strip 2511.

[0087] like Figure 7 and Figure 8 As shown, because the punching assembly 24 punches downwards, the edge of the mounting hole will have a slight downward deformation. The second telescopic member 2505 pushes the straightening base block 2507 and the compensation protrusion 2508 to move upwards. When the compensation protrusion 2508 passes through the mounting hole and abuts against the bottom of the second mounting plate 2504, the straightening base block 2507 flattens and corrects the slight deformation, thereby achieving the purpose of eliminating the slight deformation.

[0088] In addition, during the straightening process, the third telescopic member 2510 pushes the triangular strip 2512 downward, forming an indentation on the steel surface. In the subsequent cold bending process, the steel will more easily bend using the indentation as the bending point. This improves the cold bending effect and, because the stress at the edge of the mounting hole is weak, reduces material displacement during cold bending, preventing deformation caused by material displacement pulling the edge of the mounting hole. Furthermore, the second mounting plate 2504 has a second through hole 2509 corresponding to the position of the T-shaped mounting strip 2511. The T-shaped mounting strip 2511 fits against the side wall of the second through hole 2509, improving the stability of the up-and-down movement of the T-shaped mounting strip 2511. Optionally, the bottom end of the second substrate 2501 is provided with a first corrective electric slider 2502, which fits with the punching guide rail 22 to ensure the stable movement of the second substrate 2501. Further optionally, the top four corners of the second substrate 2501 are provided with second mounting posts 2503, and the top of the second mounting post 2503 passes through the second mounting plate 2504 and is connected with a nut to realize the fixed installation of the second mounting plate 2504.

[0089] In some embodiments, the stress relief component 33 includes:

[0090] The mounting assembly includes a mounting straight plate 3303 disposed between adjacent roller pressing assemblies 32, wherein the normal direction of the mounting straight plate 3303 is a first direction;

[0091] The rotating assembly includes two turntables 3312 distributed along a second direction on both sides of the bottom of the mounting plate 3303. Ball bearings 3313 are evenly embedded in the arc-shaped side surface of each turntable 3312, with two balls 3313 in each turntable 3312 always in contact with the steel surface. The second direction is... Figure 2 The front and back directions, the second direction is in Figure 9 and Figure 10 The text is incomplete and cannot be translated.

[0092] The drive assembly, located on the mounting plate 3303, is used to drive the two turntables 3312 to rotate synchronously and in opposite directions.

[0093] like Figure 2 , Figure 9 and Figure 10As shown, firstly, since the number of punching dies 6 is set to two, one is used to punch holes in the middle of the steel, and the other is used to punch holes on the front and back sides of the steel, refer to... Figure 9 During the cold bending process, steel has a middle section and two side sections. Therefore, the first type of mounting holes will be evenly distributed in the middle section, while the second type of mounting holes will be evenly distributed on the two side sections.

[0094] When making the first type of mounting hole, 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 to the edge of the mounting hole in the middle, reducing the deformation of the mounting hole edge during the cold bending process, and effectively solving the problem of mounting hole edge deformation caused by cold bending. When making the second type of mounting hole, it is only necessary to control the turntables 3312 to rotate in opposite directions, which will not be elaborated further.

[0095] Optionally, the top of the mounting plate 3303 is provided with a fifth mounting plate 3301, and the four corners of the fifth mounting plate 3301 are provided with first L-shaped plates 3302. The four first L-shaped plates 3302 are inserted into the frame edges of the two roller pressing components 32 to limit the position of the mounting plate 3303. Only additional screw holes and bolts are needed to achieve detachable assembly.

[0096] Optionally, two upper shafts 3304 are rotatably mounted on the top of the mounting plate 3303. A transmission gear 3306 is fitted in the middle of each upper shaft 3304, and the two transmission gears 3306 mesh with each other. A drive pulley 3305 is mounted at one end of each upper shaft 3304. A mounting horizontal plate 3308 is mounted on the bottom of the mounting plate 3303. Lower shafts 3309 are rotatably mounted on both ends of the mounting horizontal plate 3308 along the second direction. Two turntables 3312 are respectively mounted on the two lower shafts 3309, and driven pulleys 3310 are also fitted on the two lower shafts 3309. The driven pulleys 3310 and their corresponding drive pulleys 3305 are connected... A drive motor 3307 is mounted on the top of a mounting plate 3303 and a transmission belt 3311 is provided. The output shaft of the drive motor 3307 is connected to an upper shaft 3304, thereby driving the upper shaft 3304 to rotate. Through the transmission effect of the drive pulley 3305, the driven pulley 3310 and the transmission belt 3311, the turntable 3312 on this side is driven to rotate. Through the meshing transmission between two transmission gears 3306, in conjunction with the drive pulley 3305, the driven pulley 3310 and the transmission belt 3311 on the other side, the turntable 3312 on the other side is rotated, thereby realizing the synchronous and opposite rotation of the two turntables 3312.

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

[0098] The feeding mechanism 1 includes a second leveling machine 15, a horizontal spiral looper 14, a shearing and welding machine 13, a first leveling machine 12, and an unwinding machine 11 arranged along the first direction away from the punching mechanism 2;

[0099] like Figure 1 As shown, the steel is released from the uncoiling machine 11, passes through the first leveling machine 12, and then is fed into the horizontal spiral looper 14 through the shearing and welding machine 13. Finally, it is sent to the punching mechanism 2 through the second leveling machine 15. The first leveling machine 12 eliminates the stress of the coiled steel, while the shearing and welding machine 13 cuts and aligns the tail of the steel from the previous coil with the head of the steel from the next coil and welds them together to achieve uninterrupted connection of the steel. The horizontal spiral looper 14 balances the speed difference between the preceding and following processes and avoids the speed reduction caused by the shearing and welding machine 13. In addition, the second leveling machine 15 plays a role in traction of the steel and ensures that the steel maintains stable tension.

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

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

[0102] The frame includes a U-shaped mounting plate 4301 that is movable along a first direction on a cutting guide rail 42. 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 second corrective electric slider 4302 is provided at the bottom end of the U-shaped mounting plate 4301. The second corrective electric slider 4302 is engaged with the cutting guide rail 42 and can move along the cutting guide rail 42.

[0103] Several monitoring units are located on the intermediate mounting plate 4303 near the end face of 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 on the plane of the outer surface of the profile channel 4304 and is perpendicular to the normal of the intermediate mounting plate 4303.

[0104] Several straightening parts are located on the middle mounting plate 4303 away from the end face of the cold bending forming mechanism 3, and correspond one-to-one with each monitoring part. They include a self-rotating grinding roller 4310 and a fourth telescopic member 4308. The axial direction of the grinding roller 4310 is parallel to the laser path. The fourth telescopic member 4308 drives the grinding roller 4310 to move from the U-shaped mounting plate 4301 toward the outer surface of the profile channel 4304.

[0105] like Figure 2 and Figure 11 As shown, the steel passing through the profile channel 4304 is aligned using a laser emitter 4305 and a laser receiver 4306. If the steel deforms, the deformed area will block the laser, achieving the monitoring purpose. The grinding roller 4310 is pushed by the fourth telescopic member 4308, and the grinding roller 4310 squeezes and grinds the deformed area, thereby completely eliminating the deformation at the edge of the mounting hole. Optionally, one straightening unit has two fourth telescopic members 4308, both of which are mounted on the second L-shaped plate 4307, which is mounted on the intermediate mounting plate 4303. The protruding ends of the fourth telescopic members 4308 are all connected to a shaft seat. A fixed shaft 4309 is installed, and a grinding roller 4310 is fitted into 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 extended end of the fourth telescopic member 4308. The grinding motor 4311 drives the fixed shaft 4309 and the grinding roller 4310 to achieve the purpose of grinding. Then, the fourth telescopic member 4308 drives the grinding roller 4310 to approach and squeeze the steel, which plays the role of correcting flattening and grinding simultaneously. In addition, because the monitoring part is located near the cold bending forming mechanism 3, and the correction part is located at the other end, it is convenient to monitor first and then correct.

[0106] In some embodiments, a stacking mechanism 5 is provided after the straightening and cutting mechanism 4 for stacking U-shaped steel or C-shaped steel. Optionally, the stacking mechanism 5 can be a gantry stacker.

[0107] In some embodiments, the 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 described in detail here.

[0108] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

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

[0110] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fully automated cold bending forming production line, characterized in that, include: The punching mechanism (2) includes a plurality of punching assemblies (24) arranged along a first direction, and a first straightening assembly (25) located on one side of the punching assembly (24) along the first direction. The punching assembly (24) is used to punch steel from top to bottom to form a mounting hole. The first straightening assembly (25) is used to eliminate the deformation of the edge of the mounting hole and to form an indentation at the bend on the top surface of the steel. The indentation is located on one side of the mounting hole. The cold bending forming mechanism (3) is located on the side of the first straightening component (25) away from the punching component (24) along the first direction. It includes a plurality of roll forming components (32) for cold bending forming, and a stress relief component (33) located between two roll forming components (32) in the middle. The stress relief component (33) is used to eliminate the stress concentration phenomenon around the mounting hole during cold bending forming. The punching mechanism (2) further includes several leveling and conveying components (23), each of which is arranged on both sides of the punching component (24) and the first straightening component (25) along the first direction, for driving the steel to pass through each punching component (24) and the first straightening component (25) in sequence along the first direction and move toward the cold bending forming mechanism (3); The stress relief component (33) includes: The mounting assembly includes a mounting straight plate (3303) disposed between adjacent roller pressing assemblies (32), wherein the normal direction of the mounting straight plate (3303) is a first direction; The rotating assembly includes two turntables (3312) distributed along the second direction on both sides of the bottom of the mounting plate (3303). Ball bearings (3313) are uniformly embedded in the arc-shaped side surface of the turntables (3312), and two of the ball bearings (3313) in the same turntable (3312) are always in contact with the steel surface. A drive assembly, mounted on the mounting plate (3303), is used to drive the two turntables (3312) to rotate synchronously and in opposite directions; The production line also includes a straightening and cutting mechanism (4), which is located on the side of the cold bending forming mechanism (3) away from the punching mechanism (2) along a first direction. It includes a cutting frame (41), and 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 provided on the cutting guide rail (42). The cutting component (44) is used to cut steel, and the second straightening component (43) is used to monitor the deformation of the edge of the mounting hole and eliminate the deformation.

2. The fully automated cold bending forming production line according to claim 1, characterized in that, The punching mechanism (2) further includes a punching frame (21) and a punching guide rail (22), the extension direction of the punching guide rail (22) is a first direction, and the punching assembly (24) and the first straightening assembly (25) can move along the punching guide rail (22).

3. The fully automated cold bending forming production line according to claim 2, characterized in that, The punching assembly (24) includes: The lower base includes a first substrate (2401) that can move along the punching guide rail (22), and a lower mold base (2407) is provided at the top of the first substrate (2401). The upper base includes a first mounting plate (2403) disposed above the first substrate (2401), and a first telescopic member (2404) is provided at the top of the first mounting plate (2403). The movable end of the first telescopic member (2404) passes through the first mounting plate (2403) and is mounted with an upper mold base (2406). A plurality of punching dies (6) each include a lower die (62) disposed at the top of the lower die base (2407), the lower die (62) being provided with a punching channel (64), the punching die (6) further includes an upper template (63) disposed at the bottom of the upper die base (2406), the upper template (63) being provided with a punching post (65) at the position corresponding to the punching channel (64), and both the lower die (62) and the upper template (63) can move along a first direction; Several positioning components (7) are provided at the top of the lower mold base (2407) and the bottom of the upper mold base (2406) for fixing the lower mold (62) or the upper template (63).

4. The fully automated cold bending forming production line according to claim 3, characterized in that, The bottom end of the upper mold base (2406) and the top end of the lower mold base (2407) are both provided with mold changing guide rails (2408), and the extension direction of each mold changing guide rail (2408) is the first direction. The top end of the lower mold (62) and the bottom end of the upper mold plate (63) are both provided with mold changing electric sliders (68), and the mold changing guide rails (2408) and the mold changing electric sliders (68) are matched.

5. The fully automated cold bending forming production line according to claim 3, characterized in that, The positioning component (7) includes several fixed side plates (72) disposed at the top of the lower mold base (2407) or the bottom of the upper mold base (2406). Each fixed side plate (72) is divided into two groups, and the two groups of fixed side plates (72) are respectively located on both sides of the lower mold (62) or the upper mold plate (63) along 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 mold (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 mold (62) or the upper template (63) near the rubber frustum (77).

6. The fully automated cold bending forming production line according to claim 2, characterized in that, The first correction component (25) includes a second base plate (2501) that can move along the punching guide rail (22). The bottom end of the second base plate (2501) is provided with a second telescopic member (2505). The movable end of the second telescopic member (2505) passes through the second base plate (2501) and is detachably mounted with a correction base block (2507). The top end of the correction base block (2507) is provided with a compensation protrusion (2508). A second mounting plate (2504) is installed above the second substrate (2501). A third telescopic member (2510) is installed at the top of the second mounting plate (2504). The movable end of the third telescopic member (2510) passes through the second mounting plate (2504) and is detachably mounted 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 automated cold bending forming production line according to claim 1, characterized in that, The production line also includes a feeding mechanism (1), which is located along a first direction on the side of the punching mechanism (2) away from the cold bending forming mechanism (3) for feeding steel to the punching mechanism (2); The feeding mechanism (1) includes a second leveling machine (15), a horizontal spiral looper (14), a shearing and welding machine (13), a first leveling machine (12), and an unwinding machine (11) arranged along the first direction away from the punching mechanism (2).

8. The fully automated cold bending forming production line according to claim 1, characterized in that, The second corrective component (43) includes: The frame includes a U-shaped mounting plate (4301) that is movable along a first direction on the cutting guide rail (42). The U-shaped mounting plate (4301) has an intermediate mounting plate (4303) in the middle. The normal direction of the intermediate mounting plate (4303) is the first direction. The intermediate mounting plate (4303) has a profile channel (4304) in the middle. Several monitoring units are provided on the intermediate mounting plate (4303) near the end face of 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 on the plane of the outer surface of the profile channel (4304) and is perpendicular to the normal of the intermediate mounting plate (4303). Several straightening parts are provided on the end face of the intermediate mounting plate (4303) away from the cold bending forming mechanism (3), and correspond one-to-one with each of the monitoring parts. They include a self-rotating 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) toward the outer surface of the profile channel (4304).

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