A steel strip cutting and straightening device for roll forming

Abstract

The utility model provides a kind of steel band on-line cutting and shaping device for roll bending, including straightening mechanism, cutting mechanism and shaping mechanism being sequentially arranged on the upstream of cold bending forming unit;The discharge side of the straightening mechanism, the discharge side of cutting mechanism is equipped with guide component, the feeding side of the cutting mechanism is also equipped with pressing plate guide component. The straightening mechanism includes the straightening upper roller of cooperation use, straightening lower roller, the cutting mechanism includes the cutting upper roller of cooperation use, cutting lower roller, and cutting upper roller both sides are equipped with cutter roller for cutting steel band, the shaping mechanism includes the shaping upper roller of cooperation use, shaping lower roller. The utility model realizes the on-line trimming shaping of steel band, can quickly trim roll bending steel band process parameter, improves steel band edge quality, solves the problem that steel band size is big and roll bending forms burr defect, improves roll bending product quality and production and processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of roll bending profile technology, and in particular to an online cutting and shaping device for steel strips used in roll bending. Background Technology

[0002] Roll forming is a process in which a continuous strip of metal is passed sequentially through multiple passes of rollers with different die shapes, gradually bending it across its cross-section to form a metal profile with a specific cross-section. Roll-formed profiles are a highly efficient and economical type of profile, offering more rational geometric and dimensional designs, lower engineering costs, and higher product quality. Therefore, products made from roll-formed metal strips are widely used in the construction, automotive, power, shipbuilding, and railway transportation industries. Especially in recent years, with the surge in popularity of new energy vehicles, the advantages of roll forming technology have become increasingly prominent, leading to its expanding development and application in the automotive sector, where roll-formed metal strip products are the most widely used.

[0003] Currently, the production of roll-bent steel strip is developing towards higher efficiency, greater flexibility, and higher precision, driving the emergence of numerous new roll-bent technologies, such as high-precision machining technology, flexible production technology, composite machining technology, and deep machining technology. Therefore, many roll-bent products incorporate composite machining technologies, such as punching, local heating, embossing, welding, roll bending, and cutting. To meet the demands of high precision, high flexibility, and high efficiency in automated roll-bent production lines, further improvements in integration are needed to enhance user convenience, save costs, and achieve efficient integrated manufacturing. However, roll bending requires high precision in steel strips, such as strip width, edge quality, and feed alignment. Inconsistent strip width or poor edge quality will affect the dimensions of the formed parts, resulting in flash defects. Poor feed alignment will affect the cross-sectional shape of the formed parts and may even damage the forming rollers, requiring recutting or rework of the product, severely impacting the quality of the formed parts and production efficiency.

[0004] Therefore, it is essential to design a device that can perform online cutting and trimming of steel strips to be rolled, quickly adjust the process parameters of rolled steel strips, and improve the edge quality of steel strips. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, the purpose of this utility model is to provide an online cutting and shaping device for steel strips used in roll forming.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: An online cutting and straightening device for steel strip in roll forming includes a straightening mechanism, a cutting mechanism and a straightening mechanism arranged sequentially upstream of a cold forming unit; the discharge side of the straightening mechanism and the discharge side of the cutting mechanism are both provided with a guiding component, and the infeed side of the cutting mechanism is also provided with a pressure plate guiding component.

[0007] A further improvement of this utility model is that the straightening mechanism includes a first roller bracket, an upper straightening roller mounted on the upper shaft of the first roller bracket, and a lower straightening roller mounted on the lower shaft of the first roller bracket. The upper straightening roller and the lower straightening roller are assembled to form a first material passage gap. The material cutting mechanism includes a second roller bracket, an upper material cutting roller mounted on the upper shaft of the second roller bracket, and a lower material cutting roller mounted on the lower shaft of the second roller bracket. The upper material cutting roller and the lower material cutting roller are assembled to form a second material passage gap. Cutting rollers for cutting steel strips are provided on both sides of the upper material cutting roller. The straightening mechanism includes a third roller bracket, a straightening upper roller mounted on the upper shaft of the third roller bracket, and a straightening lower roller mounted on the lower shaft of the third roller bracket. The straightening upper roller and the straightening lower roller are assembled to form a third material passage gap. The centerlines of the first material passage, the second material passage, and the third material passage coincide.

[0008] A further improvement of this utility model is that: the width of the first material passage gap is the width dimension L0 of the steel strip before cutting, the width of the third material passage gap is the width dimension L1 of the steel strip after cutting, and the width of the feed end of the second material passage gap is L0 and the width of the discharge end is L1.

[0009] A further improvement of this utility model is that: both the straightening upper roller and the shaping upper roller are equipped with detachable cutter rollers, the cutting edge of the cutter rollers faces outwards and does not participate in the straightening and shaping operations; the cutting edge of the cutter roller at one end of the cutting upper roller points to the second material passage gap and participates in the cutting operation, while the cutting edge of the cutter roller at the other end faces outwards and does not participate in the cutting operation.

[0010] A further improvement of this utility model is that: the cutting side of the cutter roller has a stepped surface structure, and the non-cutting side has a flat surface structure; the small diameter end of the cutting side of the cutter roller is a cutting edge for cutting steel strip, and the large diameter end is a guiding part, and the height of the cutting edge and the guiding part is greater than twice the thickness of the steel strip.

[0011] A further improvement of this utility model is that: the pressure plate guide assembly includes an upper pressure plate and a lower pressure plate used in combination, as well as a position adjustment bracket for adjusting the position of the lower pressure plate; the upper pressure plate and the lower pressure plate, when combined, form a channel that can circumferentially restrict the twisting or displacement of the steel strip.

[0012] A further improvement of this utility model is that the material guiding assembly includes a pair of guide rollers used in conjunction with each other, and a position adjustment bracket for adjusting the position of the guide rollers; the two guide rollers are symmetrically arranged on both sides of the steel strip, and a gap is formed between the guide rollers for the steel strip to pass through; the lower part of the mandrel of the guide roller is rotatably mounted on the mandrel fixing seat and connected to the position adjustment bracket through the mandrel fixing seat.

[0013] A further improvement of this utility model is that: the position adjustment bracket includes a support plate, a set of height adjustment fixing blocks and a set of lateral adjustment fixing blocks arranged symmetrically; the support plate is arranged along the cross-sectional direction of the steel strip, and height adjustment screws are installed below both ends of the support plate, the height adjustment screws extend downward and are connected to the height adjustment fixing blocks, and the height adjustment fixing blocks are fixed on the roller bracket; the upper end surface of the support plate is provided with a lateral adjustment fixing block that can move laterally along the support plate, and the lateral adjustment fixing block is connected to the lateral adjustment screw on the side facing the center of the support plate.

[0014] A further improvement of this utility model is that: in the pressure plate inlet assembly, two lateral adjusting screws abut against both sides of the lower pressure plate; in the material guiding assembly, two lateral adjusting screws abut against the mandrel fixing seat on their adjacent side.

[0015] A further improvement of this utility model is that: the bottom of the lower pressure plate is provided with a positioning groove that matches the width of the support plate, and one side of the mandrel fixing seat is provided with a positioning groove that matches the height of the support plate.

[0016] The technological advancements achieved by this utility model due to the adoption of the above technical solution are as follows: This invention provides an online cutting and shaping device for steel strips used in roll bending, which enables online trimming and shaping of steel strips. It can quickly adjust the process parameters of roll bending steel strips, improve the edge quality of steel strips, and enhance the quality of roll bending and production efficiency. It also solves the problems of large steel strip size and flash defects in roll bending, eliminating the need for recutting, reducing the return rate of steel strips, and lowering the operating costs of recutting, repurchasing, and transportation of steel strips.

[0017] To ensure smooth conveying of the steel strip with proper alignment, a pressure plate guide assembly is provided on the inlet side of the cutting mechanism, and a guide assembly is provided on the outlet side of the straightening and shaping mechanisms. Both the guide assembly and the pressure plate guide assembly have bidirectional adjustment functions for height and lateral position, enabling quick and accurate positioning of the product center. The device has a simple structure, low processing cost, convenient debugging, and strong practicality.

[0018] This invention is equipped with multiple tool rollers. In addition to the cutting mechanism having one working roller and one spare roller, the straightening mechanism and the shaping mechanism are also equipped with three spare tool rollers. The tool rollers have the same structure and are highly interchangeable. Depending on the wear condition of the working tool roller of the cutting mechanism, any spare roller can be selected for quick online replacement, reducing maintenance time and improving production efficiency. Alternatively, the cutting edge can be quickly repaired according to the minimum damage size of the tool roller, enabling the tool roller to be recycled and reused, which greatly saves mold materials and reprocessing costs.

[0019] This utility model has a simple structure, requiring no investment in other equipment or an extended production line floor area. It can utilize a traditional roller support and can be connected to a cold bending forming unit to provide power for material cutting. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the straightening mechanism of this utility model; Figure 3 This is a schematic diagram of the assembly of the upper and lower straightening rollers. Figure 4 This is a schematic diagram of the material guiding assembly; Figure 5 Here is a schematic diagram of the material cutting mechanism of this utility model; schematic diagram of the material cutting mechanism; Figure 6 This is a structural schematic diagram of the pressure plate assembly; Figure 7 This is a schematic diagram of the assembly of the upper and lower cutting rollers. Figure 8 This is a schematic diagram of the alignment mechanism of this utility model; Figure 9 This is a schematic diagram of the cutting process holes for steel strip; In the diagram, 1. steel strip, 2. straightening mechanism, 3. cutting mechanism, and 4. shaping mechanism. 2-1. Upper straightening roller; 2-2. Lower straightening roller; 2-3. First roller support. 3-1. Upper cutting roller; 3-2. Lower cutting roller; 3-3. Second roller support; 3-4. Upper pressure plate; 3-5. Lower pressure plate. 4-1. Upper shaping roller; 4-2. Lower shaping roller; 4-3. Third roller support. 5-1. Supporting horizontal plate; 5-2. Lateral adjustment fixing block; 5-3. Lateral adjustment screw; 5-4. Height adjustment fixing block; 5-5. Height adjustment screw. 6-1. Guide roller; 6-2. Mandrel; 6-3. Bearing; 6-4. Bearing cap; 6-5. Mandrel retainer. 7. Cutting roller; 8. Cutting process hole. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings.

[0022] An online cutting and shaping device for steel strip in roll forming, such as Figure 1 As shown, the cold bending forming unit includes a straightening mechanism 2, a cutting mechanism 3, and a shaping mechanism 4 arranged sequentially upstream of the cold bending forming unit. After the strip steel is pre-corrected by the straightening mechanism 2, it enters the cutting mechanism 3 for cutting, and then passes through the shaping mechanism 4 for shaping and centering before being sent into the cold bending forming unit for precise forming.

[0023] like Figure 2 As shown, the straightening mechanism 2 includes a straightening upper roller 2-1 and a straightening lower roller 2-2 used in conjunction. The straightening upper roller 2-1 is a stepped roller that is thinner in the middle and thicker at both ends, and the straightening lower roller 2-2 is a stepped roller that is thicker in the middle and thinner at both ends. The thicker middle part of the straightening lower roller 2-2 mates with the thinner middle part of the straightening upper roller 2-1, and the thinner ends of the straightening lower roller 2-2 mate with the thicker ends of the straightening upper roller 2-1. The cavity formed by the meshing assembly of the straightening upper roller 2-1 and the straightening lower roller 2-2 is the first material passage for the horizontal passage of the steel strip 1. The width of the first material passage is the width L0 of the steel strip 1 before cutting. When the steel strip 1 is introduced and passes through the first material passage, the product centerline is aligned, and the positive pressure applied by the rollers flattens the steel strip 1, improving its flatness and achieving the purpose of shaping.

[0024] Specifically, the upper straightening roller 2-1 is mounted on the upper shaft of the first roller support 2-3, and the lower straightening roller 2-2 is mounted on the lower shaft of the first roller support 2-3. For example... Figure 3 As shown, one thicker end of the straightening upper roller 2-1 is a detachable cutter roller 7. The cutting edge of the cutter roller 7 faces outward, and the flat surface faces inward. When performing the straightening function, the cutter roller 7 does not participate in the work and is only used as a spare roller for the cutting mechanism 3. When the cutter roller 7 of the cutting mechanism 3 is severely worn, it can be interchanged with the cutter roller 7 of the straightening upper roller 2-1 to achieve rapid online replacement of the cutter roller 7; after the interchange, the cutting edge of the cutter roller 7 is oriented inward to achieve the cutting function.

[0025] The material cutting mechanism 3, such as Figure 5As shown, the assembly includes an upper cutting roller 3-1 and a lower cutting roller 3-2 used in conjunction. The upper cutting roller 3-1 has cutter rollers 7 on both sides for cutting the steel strip 1. The lower cutting roller 3-2 is a stepped roller, thicker in the middle and thinner at both ends. The thicker middle section of the lower cutting roller 3-2 mates with the upper cutting roller 3-1, and the thinner ends of the lower cutting roller 3-2 mate with the cutter rollers 7. After assembly, they form a second material passage for the steel strip 1 to pass horizontally. The steel strip 1 from the straightening mechanism 2, after being straightened, enters the second material passage, and any excess is cut and separated by the cutter rollers 7 of the upper cutting roller 3-1 before being output forward.

[0026] The upper cutting roller 3-1 and the cutter roller 7 are mounted on the upper shaft of the second roller bracket 3-3, and the lower cutting roller 3-2 is mounted on the lower shaft of the second roller bracket 3-3. The height of the second material passage gap can be adjusted by adjusting the height of the upper and lower shafts on the second roller bracket 3-3. It should be noted that the cutting roller has an inlet process dimension and a cut-off process dimension; the inlet process dimension is the dimension L0 before cutting, and the cut-off process dimension is the dimension L1 after cutting.

[0027] Generally, the cutting edge of the cutter roller 7 on one side of the upper cutting roller 3-1 points towards the second material passage gap, and it is the working roller. When the steel strip 1 passes through, it performs the cutting operation. (See reference...) Figure 7 The cutter roller 7 on the right side; the other cutter roller 7, with its cutting edge facing outwards, is a spare roller and does not participate in the cutting operation. See [link / reference]. Figure 7 The cutter roller 7 is located on the left side of the center. When the cutter roller 7 is severely worn, the positions of the two cutter rollers 7 can be interchanged to increase its service life and complete the maintenance quickly. When both cutter rollers 7 are severely worn, the cutter roller 7 can be reused by repairing the minimum damaged size, which greatly saves mold materials and reprocessing costs.

[0028] See Figure 7 The cutting side of the cutter roller 7 has a stepped surface structure, while the non-cutting side has a flat surface structure. The small-diameter end of the cutting side of the cutter roller 7 is the cutting edge, used for cutting the steel strip 1; the large-diameter end is the guiding part. The guiding part serves two purposes: first, during the cutting stage, the steel strip narrows, requiring a large-diameter guide belt to be set in advance, otherwise it is difficult to feed the material; second, the cut-off scrap edges enter the gap of the cutter roller and are discharged from the guiding part. As shown in the figure, the height of the cutting edge of the cutter roller 7 is h, and the height of the guiding part of the cutter roller 7 is T. To complete continuous online cutting of the steel strip 1, the cutting edge height h > 2t and the guiding height T > 2t, where t is the thickness of the steel strip 1.

[0029] To ensure the steel strip 1 is aligned, the feed end of the cutting mechanism 3 is also equipped with a pressure plate guide assembly. The pressure plate guide assembly includes an upper pressure plate 3-4, a lower pressure plate 3-5, and a position adjustment bracket. Figure 6As shown, the upper pressure plate 3-4 and the lower pressure plate 3-5 are connected by bolts, forming a channel through which the steel strip 1 can pass. The outer shape of the upper pressure plate 3-4 and the lower pressure plate 3-5 on the discharge side avoids the upper cutting roller 3-1 and the lower cutting roller 3-2, and is as close as possible to the center of the roller gap, limiting the spatial displacement of the steel strip 1 in the up, down, left, and right directions, and preventing the steel strip 1 from twisting or shifting due to uneven force during the cutting process.

[0030] The position adjustment bracket includes a height adjustment fixing block 5-4, a support horizontal plate 5-1, and a lateral adjustment fixing block 5-2. Height adjustment screws 5-5 are installed at both ends of the support horizontal plate 5-1, extending downwards and connecting to the height adjustment fixing block 5-4. The height adjustment fixing block 5-4 is threadedly fixed to the second roller bracket 3-3. The support horizontal plate 5-1 has elongated holes at both ends that match the height adjustment screws 5-5, allowing adjustment of the height of the pressure plate assembly. The upper surface of the support horizontal plate 5-1 has several threaded holes for installing the lower pressure plate 3-5. The bottom of the lower pressure plate 3-5 has a positioning groove whose opening size matches the width of the support horizontal plate 5-1. The lower pressure plate 3-5 has horizontal adjustment screws 5-3 abutting on both sides, and the other end of the horizontal adjustment screws 5-3 is connected to the horizontal adjustment fixing block 5-2. The horizontal adjustment fixing block 5-2 is fixedly connected to the upper end surface of the support plate 5-1. The left and right positions of the pressure plate assembly can be adjusted by the horizontal adjustment screws 5-3.

[0031] To ensure smooth conveying of the steel strip 1, both the straightening mechanism 2 and the cutting mechanism 3 are equipped with guide components on their discharge sides. The guide components include a pair of guide rollers 6-1 used in conjunction with each other, and a position adjustment bracket for adjusting the position of the guide rollers 6-1. The two guide rollers 6-1 are respectively positioned on both sides of the steel strip 1. When the steel strip 1 is output, it passes through the gap between the guide rollers 6-1, which can correct the deviation of the steel strip 1, shorten the distance between it and the downstream mechanism, facilitate the alignment of the steel strip 1 with the center, and facilitate the feeding of materials into the downstream mechanism.

[0032] like Figure 4As shown, two guide rollers 6-1 are symmetrically arranged on both sides of the steel strip 1, forming a gap between the guide rollers 6-1 for the steel strip 1 to pass through. The lower part of the mandrel of the guide roller 6-1 is rotatably mounted on the mandrel fixing seat 6-5, and the bearing 6-3 is mounted on the mandrel 6-2. The top bearing is restricted from running out by the bearing cover 6-4 to ensure smooth rotation of the guide roller 6-1. The mandrel fixing seat 6-5 is fixedly connected to the position adjustment bracket. The position adjustment bracket includes a height adjustment fixing block 5-4, a support horizontal plate 5-1, and a lateral adjustment fixing block 5-2. The side and top surfaces of the support horizontal plate 5-1 are provided with several mounting threaded holes. The threaded holes on the side are used to install the mandrel fixing seat 6-5. Specifically, one side of the mandrel fixing seat 6-5 is provided with a positioning groove, the opening size of which matches the height dimension of the support horizontal plate 5-1. After the two are snapped together, they are fixedly installed through the threaded holes on the side. The supporting horizontal plate 5-1 and the lateral adjustment fixing block 5-2 are slidably engaged. Specifically, the lateral adjustment fixing block 5-2 has a positioning groove structure at its lower part, the opening size of which matches the width of the supporting horizontal plate 5-1, allowing the lateral adjustment fixing block 5-2 to straddle the supporting horizontal plate 5-1 and slide along the upper surface of the supporting horizontal plate 5-1. When the lateral adjustment fixing block 5-2 moves to a suitable position, it is threadedly fixed through the threaded hole at the top of the supporting horizontal plate 5-1. A lateral adjustment screw 5-3 is installed on the side of the lateral adjustment fixing block 5-2 near the mandrel fixing seat 6-5, with the end of the lateral adjustment screw 5-3 abutting against the mandrel fixing seat 6-5, thereby adjusting the left and right position of the guide roller 6-1. The lateral adjustment fixing block 5-2 has a threaded hole, and after the mandrel fixing seat 6-5 is adjusted to a suitable position, it is threadedly locked through the threaded hole at the top of the supporting horizontal plate 5-1.

[0033] Height adjustment screws 5-5 are installed at the lower ends of both ends of the support plate 5-1. The height adjustment screws 5-5 extend downward and are connected to the height adjustment fixing blocks 5-4. The height adjustment fixing blocks 5-4 are fixedly connected to both sides of the first roller bracket 2-3 / second roller bracket 3-3 by threads. The support plate 5-1 has elongated holes at both ends that are adapted to the height adjustment screws 5-5. The height of the guide roller can be adjusted by adjusting the height of the guide roller through the height adjustment screws 5-5.

[0034] It should be noted that the material guiding assembly has a left-right symmetrical structure. Except for the support plate 5-1, which has one unit, all other components are symmetrically arranged in two sets.

[0035] The straightening mechanism 4 includes a straightening upper roller 4-1 and a straightening lower roller 4-2 used in conjunction. Figure 8As shown, the upper shaping roller 4-1 is a straight roller with cutter rollers 7 at both ends; the lower shaping roller 4-2 is a stepped roller with a thicker middle and thinner ends. The thicker middle part of the lower shaping roller 4-2 mates with the upper shaping roller 4-1, and the thinner ends of the lower shaping roller 4-2 mate with the cutter rollers 7. After assembly, they form a third material passage for the horizontal passage of the steel strip 1. The width of the third material passage is the width L1 of the steel strip 1 after cutting. During the cutting process, the cutter roller 7 cuts on one side, and the steel strip 1 is subjected to uneven load on both sides, making it prone to twisting defects. Therefore, it is necessary to use the shaping roller to correct the twisting defects of the steel strip 1, align the product centerline, and then transport it to the cold bending forming unit for precise forming.

[0036] The upper shaping roller 4-1 and the cutter roller 7 are mounted on the upper shaft of the third roller bracket 4-3, and the lower shaping roller 4-2 is mounted on the lower shaft of the third roller bracket 4-3. The height of the third material gap can be adjusted by adjusting the height of the upper and lower shafts on the third roller bracket 4-3. In the shaping mechanism 4, the cutting edges of the cutter roller 7 all face outwards and do not participate in the shaping function. The purpose of setting the cutter roller 7 in the shaping mechanism 4 is to serve as a spare roller for the cutting mechanism 3. When the cutter roller 7 of the cutting mechanism 3 is severely worn, it can be interchanged with the cutter roller 7 of the shaping mechanism 4, enabling rapid replacement of the cutter roller 7 on the production line.

[0037] Upstream of the online material cutting and shaping device of this utility model, a pre-punching machine is preferably installed. The pre-punching machine first punches several cutting process holes 8 on both sides of the steel strip 1. The cut-off waste material edges are discharged and collected through the cutting process holes 8, which significantly reduces the wear of the tool roller and improves the tool life and cutting quality.

[0038] The cutting process hole 8 needs to be designed according to the length of product part 1. For example Figure 9 As shown, the width of steel strip 1 before cutting is L0, and the width of steel strip 1 after cutting is L1. Therefore, the width of steel strip 1 needs to be reduced by y = L0 - L1, and the transverse width of the cutting process hole 8 is S. S > y must be satisfied to ensure the smooth discharge of the cutting waste edge.

[0039] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. An online cutting and shaping device for steel strip in roll forming, characterized in that: It includes a straightening mechanism (2), a cutting mechanism (3) and a shaping mechanism (4) arranged sequentially upstream of the cold bending forming unit; the straightening mechanism (2) and the cutting mechanism (3) are both provided with a material guiding component, and the cutting mechanism (3) is also provided with a pressure plate guiding component on the material feeding side; The straightening mechanism (2) includes a first roller bracket (2-3), an upper straightening roller (2-1) mounted on the upper shaft of the first roller bracket (2-3), and a lower straightening roller (2-2) mounted on the lower shaft of the first roller bracket (2-3). The upper straightening roller (2-1) and the lower straightening roller (2-2) are assembled to form a first material passage gap. The cutting mechanism (3) includes a second roller bracket (3-3), an upper cutting roller (3-1) mounted on the upper shaft of the second roller bracket (3-3), and a lower cutting roller (3-2) mounted on the lower shaft of the second roller bracket (3-3). The upper cutting roller (3-1) and the lower cutting roller (3-2) are assembled to form a second material passage gap. The upper cutting roller (3-1) is provided with cutter rollers (7) on both sides for cutting steel strip (1). The straightening mechanism (4) includes a third roller bracket (4-3), a straightening upper roller (4-1) mounted on the upper shaft of the third roller bracket (4-3), and a straightening lower roller (4-2) mounted on the lower shaft of the third roller bracket (4-3). The straightening upper roller (4-1) and the straightening lower roller (4-2) are assembled to form a third material passage gap. The centerlines of the first material passage, the second material passage, and the third material passage coincide.

2. The online cutting and shaping device for steel strip in roll forming according to claim 1, characterized in that: The width of the first material passage is L0, the width of the steel strip before cutting, and the width of the third material passage is L1, the width of the steel strip after cutting. The width of the feed end of the second material passage is L0, the width of the steel strip before cutting, and the width of the discharge end is L1, the width of the steel strip after cutting.

3. The online cutting and shaping device for steel strip in roll forming according to claim 1, characterized in that: The straightening upper roller (2-1) and the shaping upper roller (4-1) are both equipped with detachable cutter rollers (7). The cutting edge of the cutter roller (7) faces outward and does not participate in the straightening and shaping operations. The cutting upper roller (3-1) has one end of the cutter roller (7) pointing towards the second material gap and participating in the cutting operation, while the other end of the cutter roller (7) faces outward and does not participate in the cutting operation.

4. The online cutting and shaping device for steel strip in roll forming according to claim 3, characterized in that: The cutting side of the cutter roller (7) has a stepped surface structure, and the non-cutting side has a flat surface structure. The small diameter end of the cutting side of the cutter roller (7) is the cutting edge for cutting the steel strip (1), and the large diameter end is the guiding part. The height of the cutting edge and the guiding part is greater than twice the thickness of the steel strip (1).

5. The online cutting and shaping device for steel strip in roll forming according to claim 1, characterized in that: The pressure plate guide assembly includes an upper pressure plate (3-4) and a lower pressure plate (3-5) used in combination, and a position adjustment bracket for adjusting the position of the lower pressure plate (3-5); the upper pressure plate (3-4) and the lower pressure plate (3-5) together form a channel that can circumferentially restrict the twisting or displacement of the steel strip (1).

6. The online cutting and shaping device for steel strip in roll forming according to claim 1, characterized in that: The material guiding assembly includes a pair of guide rollers (6-1) used in conjunction with each other, and a position adjustment bracket for adjusting the position of the guide rollers (6-1); the two guide rollers (6-1) are symmetrically arranged on both sides of the steel strip (1), and a gap is formed between the guide rollers (6-1) for the steel strip (1) to pass through. The lower part of the spindle (6-2) of the guide roller (6-1) is rotatably mounted on the spindle fixing seat (6-5) and connected to the position adjustment bracket through the spindle fixing seat (6-5).

7. The online cutting and shaping device for steel strip in roll forming according to any one of claims 5 or 6, characterized in that: The position adjustment bracket includes a support plate (5-1), a set of symmetrically arranged height adjustment fixing blocks (5-4), and a set of lateral adjustment fixing blocks (5-2); the support plate (5-1) is arranged along the cross-sectional direction of the steel strip (1), and height adjustment screws (5-5) are installed at the lower ends of both ends of the support plate (5-1). The height adjustment screws (5-5) extend downward and are connected to the height adjustment fixing blocks (5-4). The height adjustment fixing blocks (5-4) are fixed on the roller bracket; the upper end surface of the support plate (5-1) is provided with a lateral adjustment fixing block (5-2) that can move laterally along the support plate (5-1). The lateral adjustment fixing block (5-2) is connected to the lateral adjustment screw (5-3) on the side facing the center of the support plate (5-1).

8. The online cutting and shaping device for steel strip in roll forming according to claim 7, characterized in that: In the pressure plate guide assembly, two lateral adjusting screws (5-3) abut against both sides of the lower pressure plate (3-5); in the material guiding assembly, two lateral adjusting screws (5-3) abut against the mandrel fixing seat (6-5) on their adjacent sides.

9. The online cutting and shaping device for steel strip in roll forming according to claim 8, characterized in that: The bottom of the lower pressure plate (3-5) is provided with a positioning groove that matches the width of the support plate (5-1), and one side of the spindle fixing seat (6-5) is provided with a positioning groove that matches the height of the support plate (5-1).

Images