Linear profile cold rolling forming device, forming system and production line

Abstract

The utility model relates to a linear profile cold rolling forming device, a forming system and a production line, the cold rolling forming device comprises a first lower compression roller, a first upper compression roller and two first side compression rollers, and the first upper compression roller, the first side compression rollers and the first lower compression roller define a first forming area of a linear profile; the first lower pressing roller is provided with a first flange in the middle and second flanges located on the two sides of the first flange, the outer diameter of the first flange is larger than that of the second flanges, and the width of the first flange is smaller than that of the transverse extending part so that the bending position of the closing-up part can be reserved; when the first side pressing roller extrudes the linear profile, the first flange and the first upper pressing roller can extrude the middle position of the transverse extending part, the second flange can support the closing-up part, and the cold rolling forming device has the beneficial effects that the cold rolling forming device has good adaptability to the hollow bent linear profile, and the forming quality of the linear profile can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of linear profile forming, in particular to a cold rolling forming device, a forming system and a production line for linear profiles. Background Art

[0002] In the current cold rolling forming system for linear profiles, a progressive bending forming method is adopted. That is, the initial raw material, the cold rolling steel plate of the linear profile, is first bent by a small angle at a required position by the upstream of the cold rolling forming system for linear profiles, and after this station, the bending angle is gradually increased until the forming of the linear profile.

[0003] For the linear profile with an empty bend, since there is a closing part extending inwards at the end of the linear profile, when the bending angle of the side wall part of the linear profile is relatively large, the supporting part of the lower pressing roller of the cold rolling forming device has to make way for the closing part, resulting in the ineffective support of the lateral extension part in the middle of the linear profile by the lower pressing roller. Thus, when the linear profile is clamped by the upper pressing roller and the lower pressing roller and a bending force is applied by the side pressing roller, the part near the bend of the linear profile deflects due to insufficient support, thereby reducing the forming quality of the linear profile. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a cold rolling forming system for linear profiles and a production line for linear profiles, which solve the technical problem in the prior art that when the linear profile is clamped by the upper pressing roller and the lower pressing roller and a bending force is applied by the side pressing roller, the part near the bend of the linear profile deflects due to insufficient support, thereby reducing the forming quality of the linear profile.

[0006] (2) Technical Solutions

[0007] In order to achieve the above object, the main technical solutions adopted by the utility model include:

[0008] In the first aspect, the utility model provides a linear profile cold rolling forming device, which is suitable for forming hollow bend linear profiles, wherein a transverse extension portion is formed in the middle of the linear profile, and closing portions extending inward are formed at both ends of the linear profile, comprising a first lower pressure roller, a first upper pressure roller and two first side pressure rollers, wherein the first upper pressure roller, the first side pressure roller and the first lower pressure roller enclose a first forming area of ​​the linear profile; the first lower pressure roller has a first flange in the middle and second flanges located on both sides of the first flange, the outer diameter of the first flange is larger than the outer diameter of the second flange, and the width of the first flange is smaller than the width of the transverse extension portion to allow for the bending position of the closing portion; when the first side pressure roller extrude the linear profile, the first flange and the first upper pressure roller can extrude the middle position of the transverse extension portion, and the second flange can support the closing portion.

[0009] In the second aspect, the utility model provides a linear profile cold rolling forming system, including the cold rolling forming device in the above technical solution, and also including a cold rolling trimming device located on the downstream side of the cold rolling forming device, the cold rolling trimming device including a second lower pressure roller, a second upper pressure roller and two second side pressure rollers enclosing a second forming area; the outer edge of the second lower pressure roller forms a supporting portion, and when the second side pressure roller extrude the linear profile, the supporting portion supports the closing portion to compensate for the deformation of the lateral extension portion through the reaction force of the supporting portion on the closing portion.

[0010] In a third aspect, the utility model provides a linear profile production line, including the linear profile cold rolling forming system in the above technical solution, and also includes a punching system located on the downstream side of the linear profile production line and receiving the linear profile.

[0011] (III) Beneficial effects

[0012] The beneficial effect of the utility model is that when the linear profile enters the first forming area of ​​the cold rolling forming device, the first upper pressure roller, the first side pressure roller and the first lower pressure roller work together to perform cold processing on the profile. The first flange and the first upper pressure roller jointly squeeze the middle position of the transverse extension portion of the linear profile, so that the linear profile remains stable, and can also limit the linear profile from unnecessary deformation when it is not in the extrusion position, thereby improving the forming accuracy of the linear profile. The second flange can support the closing portion of the linear profile to prevent it from excessive deformation during the forming process. At the same time, the reaction force of the second flange on the closing portion also helps to compensate for the deformation of the transverse extension portion that is not directly supported by the first flange, ensuring that the cross-sectional shape of the entire profile is uniform. The cold rolling forming device in this patent has a better adaptability to the empty curved linear profile, which can greatly improve the forming quality of the linear profile. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is one of the structural schematic diagrams of the cold rolling forming system of the utility model for linear profiles;

[0014] Figure 2 It is a schematic structural diagram of the position of the first forming area of the cold rolling forming device of the present utility model;

[0015] Figure 3 It is a schematic structural diagram of the cold rolling shaping device of the present utility model;

[0016] Figure 4 It is a partially enlarged schematic structural diagram of the first adjustment mechanism of the present utility model;

[0017] Figure 5 It is a side view schematic structural diagram of the third adjustment mechanism of the present utility model;

[0018] Figure 6 It is a top view schematic structural diagram of the third adjustment mechanism of the present utility model.

[0019]

Description of the attached drawing reference numerals

[0020] 100, straight profile; 101, transverse extension part; 102, closing part; 1, cold rolling forming device; 11, first upper pressing roller; 12, first lower pressing roller; 121, first flange; 122, second flange; 13, first side pressing roller; 14, support frame; 15, second adjustment mechanism; 151, second lead screw; 152, second slider; 16, third adjustment mechanism; 161, connecting plate; 162, roller frame; 163, bolt; 2, cold rolling shaping device; 21, second upper pressing roller; 22, second lower pressing roller; 220: supporting part; 23, second side pressing roller; 24, first adjustment mechanism; 241, base; 242, rotating rod; 243, first lead screw; 244, transmission component; 245, first slider. Detailed implementation manners

[0021] For better explaining the present utility model for easy understanding, the following combines the attached Figure 1-6 , through specific implementation manners, to describe the present utility model in detail. Among them, the orientation nouns such as "upper" and "lower" mentioned in this article are based on Figure 1 the orientation.

[0022] Embodiment 1:

[0023] Refer to Figures 1-6, an embodiment of the present utility model provides a straight profile cold rolling forming device 1, which is suitable for forming a straight profile 100 with an air-bending shape. A transverse extension portion 101 is formed in the middle of the straight profile 100, and inwardly extending closing portions 102 are formed at both ends of the straight profile 100. The device includes a first lower pressing roller 12, a first upper pressing roller 11, and two first side pressing rollers 13. The first upper pressing roller 11, the first side pressing rollers 13, and the first lower pressing roller 12 enclose a first forming area for the straight profile 100. The first lower pressing roller 12 has a first flange 121 in the middle and second flanges 122 located on both sides of the first flange 121. The outer diameter of the first flange 121 is greater than that of the second flange 122. The width of the first flange 121 matches the width of the straight profile 100 and is less than the width of the transverse extension portion 101, so as to leave a bending position for the closing portion 102 while supporting the transverse extension portion 101. When the first side pressing roller 13 presses the straight profile 100, the first flange 121 and the first upper pressing roller 11 can press the middle position of the transverse extension portion 101, and the second flange 122 can support the closing portion 102, so as to compensate for the deformation amount of the part of the transverse extension portion 101 not supported by the first flange 121 through the reaction force of the second flange 122 on the closing portion 102.

[0024] In this embodiment, the straight profile 100 cold rolling forming system is used to process a straight metal material into a straight profile 100 with an air-bending cross-section through a cold rolling process.

[0025] The first lower pressing roller 12 includes a first flange 121 in the middle and second flanges 122 located on both sides of the first flange 121. The outer diameter of the first flange 121 is greater than that of the second flange 122. Such a design is to be able to apply different pressures to different parts of the straight profile 100 during the forming process. The width of the first flange 121 is less than the width of the transverse extension portion 101, which is to ensure that there is enough space for the bending position of the closing portion 102 to deform during the forming process without being interfered by the first flange 121.

[0026] The first upper pressing roller 11 cooperates with the first lower pressing roller 12 to jointly press the transverse extension portion 101 of the straight profile 100.

[0027] The two first side pressing rollers 13 are located on both sides of the straight profile 100 and are used to provide a lateral pressing force during the forming process to help the straight profile 100 reach the expected cross-sectional shape.

[0028] When the straight profile 100 enters the first forming area of the cold rolling forming device 1, the first upper pressing roller 11, the first side pressing roller 13 and the first lower pressing roller 12 act together to perform cold processing on the profile. The first flange 121 and the first upper pressing roller 11 jointly extrude the middle position of the lateral extension 101 of the straight profile 100, keeping the straight profile 100 stable and also being able to restrict the straight profile 100 from undergoing unwanted deformation at non-extrusion positions, thereby improving the forming accuracy of the straight profile 100.

[0029] The second flange 122 can support the closed end 102 of the straight profile 100 to prevent it from being overly deformed during the forming process. At the same time, the reaction force of the second flange 122 on the closed end 102 also helps to compensate for the deformation amount of the part of the lateral extension 101 that is not directly supported by the first flange 121, ensuring that the cross-sectional shape of the entire profile is uniform. Using the cold rolling forming device 1 in this patent has a better adaptability to the straight profile 100 with an air-bending shape and can greatly improve the forming quality of the straight profile 100.

[0030] Specifically, after the two sides of the straight profile 100 are extruded, the closed end 102 is restricted by the second flange 122 and cannot move downward, so that the part of the lateral extension 101 that is not directly supported by the first flange 121 is forced to move upward by the reaction force from the second flange 122, thereby being able to balance the working condition of the straight profile 100 undergoing flexural deformation and keeping it in a predetermined shape.

[0031] The first side pressing roller 13 provides the necessary lateral extrusion force to ensure that the straight profile 100 maintains a stable cross-sectional shape during the forming process and prevents it from being twisted or deformed.

[0032] Specifically, a plurality of cold rolling forming devices 1 are distributed along the length direction of the straight profile 100 for preliminary forming and gradual adjustment of the shape of the straight profile 100. By gradually increasing the angle of the extrusion surface of the side pressing roller along the feeding direction of the straight profile 100, the bending angle of the bending surface of the straight profile 100 can be gradually increased until the preliminary forming operation of the straight profile 100 is completed. Through the coordinated action of the upper pressing roller, the lower pressing roller and the side pressing roller, the straight profile 100 is preliminarily compressed and its shape is adjusted.

[0033] Embodiment 2:

[0034] Refer to Figures 1-6 , in addition to having all the technical solutions of the above embodiment, the embodiment of the present utility model further has the following technical solutions:

[0035] The straight profile 100 further includes a folding part 103 connecting the lateral extension 101 and the closed end 102, and the first side pressing roller 13 acts on the folding part 103.

[0036] In this embodiment, the folding portion 103 is used to bear the extrusion force from the first side pressing roller 13, so that the straight profile 100 is bent at both ends of the folding portion 103 to form the laterally extending portion 101 and the closing portion 102.

[0037] Embodiment 3:

[0038] Referring to Figures 1-6 , an embodiment of the present utility model provides a cold rolling forming system for straight profiles, which includes the straight profile cold rolling forming device 1 in any of the above embodiments, and further includes a cold rolling and shaping device 2 located on the downstream side of the cold rolling forming device 1. The cold rolling and shaping device 2 includes a second lower pressing roller 22, a second upper pressing roller 21 and two second side pressing rollers 23 that enclose a second forming area; a supporting portion 220 is formed on the outer edge of the second lower pressing roller 22. When the second side pressing roller 23 extrudes the straight profile 100, the supporting portion 220 supports the closing portion 102, so as to compensate for the deformation amount of the laterally extending portion 101 through the reaction force of the supporting portion 220 on the closing portion 102; the width of the supporting portion 220 matches and is smaller than the distance between the outer edges of the two closing portions 102 of the straight profile 100.

[0039] In this embodiment, a cold rolling forming system for a straight profile 100 is provided. By integrating the cold rolling forming device 1 and the cold rolling and shaping device 2, precise forming and subsequent shaping of the straight profile 100 are realized, ensuring the forming quality and accuracy of the profile.

[0040] The cold rolling forming device 1 is responsible for initially processing the raw material into a straight profile 100 with an air bend shape, and the cold rolling and shaping device 2 further shapes and adjusts the initially formed straight profile 100 to ensure that its shape and dimensions meet the final requirements. The device encloses a second forming area through the second upper pressing roller 21, the second lower pressing roller 22 and two second side pressing rollers 23 to finely process the straight profile 100.

[0041] In the second forming area, a supporting portion 220 is designed on the outer edge of the second lower pressing roller 22, which ingeniously solves a key problem in the shaping process. When the second side pressing roller 23 extrudes the closing portion 102 of the straight profile 100, the supporting portion 220 will timely support the closing portion 102, and the reaction force of the supporting portion 220 on the closing portion 102 can also compensate for the deformation amount of the laterally extending portion 101, ensuring the balance and stability of the entire profile during the shaping process.

[0042] Moreover, by restricting the width of the supporting portion 220 and making it smaller than the distance between the outer edges of the two closing portions 102 of the straight profile 100, it can be ensured that when the second lower pressing roller 22 makes a height adjustment, the second lower pressing roller 22 does not interfere with the second side pressing roller 23, thereby improving the use reliability of the device.

[0043] Example 4:

[0044] Referring to Figures 1-6 , in addition to all the technical solutions of the above embodiments, the embodiments of the present utility model further have the following technical solutions:

[0045] A plurality of cold rolling forming devices 1 are arranged along the length direction of the straight profile 100, and the width of the first flange 121 corresponding to the upstream cold rolling forming device 1 is greater than the width of the first flange 121 corresponding to the downstream cold rolling forming device 1.

[0046] In this embodiment, in the initial stage of forming, the straight profile 100 usually needs to undergo a large shape change to meet the requirements of the target cross-section. At this time, the wider first flange 121 can provide a larger support area, ensuring that the lateral extension 101 is stably supported during the forming process and preventing deformation or rupture caused by excessive extrusion. At the same time, for the cold rolling forming device 1 on the upstream side, since the inward bend angle of the bending part is not very large, the requirement for the first flange 121 to give way to the closing part 102 is not very large. Therefore, it is beneficial to achieve the balance between the bearing function and the giving-way function of the first flange 121, ensuring the bending effect and bending accuracy of the straight profile 100.

[0047] Example 5:

[0048] Referring to Figures 1-6 , in addition to all the technical solutions of the above embodiments, the embodiments of the present utility model further have the following technical solutions:

[0049] The height of the second pressing roller 22 is adjustable; both the cold rolling forming device 1 and the cold rolling profiling device 2 include two sets of support frames 14, the two sets of support frames 14 both extend vertically and are distributed on both sides of the straight profile 100 along the width direction of the straight profile 100; both ends of the second pressing roller 22 are vertically slidably supported on the corresponding support frames 14; the cold rolling profiling device 2 further includes a first adjustment mechanism 24 for adjusting the height of the second pressing roller 22. The first adjustment mechanism 24 includes a base 241 connected to the bottom side wall of the corresponding support frame 14, a rotating rod 242 rotatably connected to the base 241 and coaxial with the first pressing roller 12, a first lead screw 243 vertically rotatably connected to the base 241, a transmission assembly 244 supported on the base 241 and drivingly connected to the rotating rod 242 and the first lead screw 243, and a first slider 245 vertically slidably connected in the corresponding support frame 14; one end of the first lead screw 243 close to the first slider 245 is rotatably connected to the first slider 245 along the vertical axis, so that the first lead screw 243 can pull or push the first slider 245 to slide. The two rotating rods 242 corresponding to the two second pressing rollers 22 are of an integral structure; the transmission assembly 244 is one of a bevel gear assembly and a worm and worm gear assembly.

[0050] In this embodiment, two sets of support frames 14 extend vertically, that is, their height directions are perpendicular to the ground, and they are distributed on both sides of the profile along the width direction of the linear profile 100. This layout provides a stable support foundation for the pressure rollers, ensuring stability and accuracy during the forming process.

[0051] The base 241 is connected to the bottom side wall of the support frame 14, providing a stable support foundation for the entire adjustment mechanism. The base 241 serves as the installation platform for the rotating rod 242, the first lead screw 243, and the transmission assembly 244, ensuring that they can work accurately and stably. The rotating rod 242 is rotatably connected to the base 241 and is coaxial with the first lower pressure roller 12.

[0052] The two rotating rods 242 corresponding to the two lower pressure rollers forming the forming area are of an integral structure. This design simplifies the structure, enhances the synchronism and stability between the two lower pressure rollers, simplifies the overall structure of the first adjustment mechanism 24, and is beneficial to ensuring the forming quality of the profile.

[0053] The first lead screw 243 is vertically rotatably connected to the base 241, and its axis is perpendicular to the axis of the lower pressure roller. One end of the first lead screw 243 close to the first slider 245 is rotatably connected to the first slider 245 along the vertical axis. This connection method enables the rotation of the first lead screw 243 to be converted into the linear motion of the first slider 245 in the vertical direction, thereby realizing the adjustment of the height of the lower pressure roller.

[0054] The transmission assembly 244 is set as one of a bevel gear assembly or a worm and worm gear assembly, and is preferably set as a worm and worm gear assembly to obtain a self-locking transmission between the rotating rod 242 and the first lead screw 243.

[0055] The first slider 245 is vertically slidably connected within the support frame 14. This connection method ensures that the first slider 245 can only slide in the vertical direction to meet the requirement of adjusting the height of the first lower pressure roller 12. As the execution component for adjusting the height of the first lower pressure roller 12, it slides in the vertical direction by the rotation traction or push of the first lead screw 243. Since there is a direct or indirect connection relationship between the first slider 245 and the lower pressure roller, the sliding of the first slider 245 will drive the lower pressure roller to move up and down.

[0056] Specifically, a handle can be provided at the end of the rotating rod 242 to rotate the rotating rod 242.

[0057] Specifically, the first slider 245 is set as a split structure, which includes a slider in the middle and mounting plates on both sides. It is slidably installed inside the support frame 14, and the support frame 14 is clamped between the mounting plates. The mounting plates and the slider can be fixed in the form of bolt 163 connection. In this way, the sliding connection relationship between the first slider 245 and the support frame 14 can be established. The two ends of the first lower pressing roller 12 extend out with rotating shafts that are rotatably connected to the first slider 245 through bearings.

[0058] By adjusting the height of the second lower pressing roller 22, the height of the supporting portion 220 can be adjusted to match the thickness of the preliminarily formed straight profile 100, thereby improving the use flexibility of the profiling device.

[0059] Embodiment 6:

[0060] Referring to Figures 1-6 , in addition to having all the technical solutions of the above embodiments, the embodiments of the present utility model further have the following technical solutions:

[0061] Both the cold rolling forming device 1 and the cold rolling profiling device 2 include a second adjustment mechanism 15 for adjusting the heights of the corresponding second upper pressing rollers 21 and the first upper pressing rollers 11. The second adjustment mechanism 15 includes a second lead screw 151 threadedly connected to the top side wall of the corresponding support frame 14, and a second slider 152 slidably connected inside the corresponding support frame 14; the first upper pressing roller 11 and the second upper pressing roller 21 are rotatably connected to the corresponding second slider 152, and the end of the second lead screw 151 close to the second slider 152 is rotatably connected to the second slider 152 along the vertical axis, so that the second lead screw 151 can pull or push the second slider 152 to slide.

[0062] In this embodiment, the second adjustment mechanism 15 is used to adjust the height of the corresponding upper pressing roller. This design enables the system to flexibly adapt to profiles of different thicknesses and materials, ensuring uniform and controllable pressure distribution during the forming process.

[0063] The second lead screw 151 is threadedly connected to the top side wall of the support frame 14 to ensure its stability in the vertical direction. As the core component of the transmission mechanism, it rotates to pull or push the second slider 152 to slide in the vertical direction.

[0064] The second slider 152 is slidably connected inside the support frame 14, allowing it to slide freely in the vertical direction. The corresponding upper pressing rollers are all rotatably connected to the corresponding second slider 152, which means that the sliding of the second slider 152 will directly drive the upper pressing rollers to move up and down.

[0065] The end of the second lead screw 151 close to the second slider 152 is rotationally connected to the second slider 152 along the vertical axis. This connection method ensures that the rotation of the lead screw can be efficiently converted into the linear motion of the slider. When the second lead screw 151 rotates, its threads cooperate with the threads inside the slider, causing the slider to move in the vertical direction.

[0066] Specifically, a handwheel can also be provided at the end of the second lead screw 151 to rotate the second lead screw 151.

[0067] When it is necessary to adjust the height of the upper pressure roller, it can be achieved by rotating the second lead screw 151. As the lead screw rotates, its threads and the threads inside the second slider 152 undergo relative motion, thereby pulling or pushing the second slider 152 to slide in the vertical direction. Since the upper pressure roller is rotationally connected to the corresponding second slider 152, the sliding of the slider will directly drive the upper pressure roller to move up and down.

[0068] This adjustment method has the advantages of simple structure, convenient adjustment, and high precision. By adjusting the height of the upper pressure roller, it can be ensured that during the cold rolling forming process, the gap between the upper and lower pressure rollers is appropriate, thereby obtaining uniform and high-quality profiles.

[0069] Specifically, the second slider 152 can adopt the same structure as the first slider 245. The two ends of the upper pressure roller extend out with rotating shafts that are rotationally connected to the second slider 152 through bearings.

[0070] Embodiment 7:

[0071] Referring to Figures 1-6 , in addition to having all the technical solutions of the above embodiments, the embodiments of the present utility model further have the following technical solutions:

[0072] Both the cold rolling forming device 1 and the cold rolling profiling device 2 include a third adjustment mechanism 16 to adjust the distance between the first side pressure roller 13 and the second side pressure roller 23 and the corresponding support frame 14; the third adjustment mechanism 16 includes a connecting plate 161 fixedly connected to the support frame 14, a roller frame 162 slidably connected to the connecting plate 161 along the width direction of the linear profile 100, and the first side pressure roller 13 and the second side pressure roller 23 are correspondingly rotationally connected to the roller frame 162; the third adjustment mechanism 16 further includes a bolt 163 threadedly connected to the roller frame 162, and one end of the bolt 163 abuts against the connecting plate 161.

[0073] In this embodiment, the third adjustment mechanism 16 is used to adjust the distance between the side pressure roller and the corresponding support frame 14. This adjustment mechanism is crucial for ensuring that the side pressure roller can apply appropriate lateral pressure during the forming process, thereby helping to control the forming accuracy and shape stability of the profile.

[0074] The connecting plate 161 is fixedly connected to the support frame 14, providing stable support and guidance for the roller frame 162. As a reference surface for the roller frame 162 to slide, it ensures that the roller frame 162 can maintain stable linear motion during the adjustment process. The roller frame 162 is slidably connected to the connecting plate 161 along the axial direction of the upper pressure roller. This sliding connection allows the roller frame 162 to move freely in the horizontal direction to adapt to different spacing adjustment requirements. The side pressure roller is vertically rotatably connected to the roller frame 162, ensuring that the side pressure roller can maintain free rotation while adjusting the spacing.

[0075] The bolt 163 is threadedly connected to the roller frame 162, and one end thereof abuts against the connecting plate 161. This connection mode enables the bolt 163 to push the roller frame 162 by rotating, thereby changing the distance between the bolt 163 and the connecting plate 161, so that the side pressure roller is away from the corresponding connecting plate 161. When the side pressure roller is required to approach the corresponding connecting plate 161, the bolt 163 is rotated in the opposite direction, and under the extrusion of the linear profile 100, the side pressure roller automatically approaches the corresponding connecting plate 161.

[0076] In summary, by adjusting the spacing of the side pressure rollers, it can be ensured that the profile is subjected to uniform lateral pressure during the forming process, thereby avoiding shape distortion and dimensional deviation and improving the overall quality of the product.

[0077] Embodiment 8:

[0078] In addition to providing a linear profile production line, the embodiments of the utility model include the linear profile cold rolling forming system in any one of the above embodiments 2-7, and also include a punching system located on the downstream side of the linear profile cold rolling forming system and receiving the linear profile. Therefore, the linear profile production line includes all the beneficial effects of the linear profile cold rolling forming system in any one of the above embodiments. To avoid repetition, they are not described in detail here.

[0079] It can be understood that, except for any conflicting parts, the above-mentioned embodiments 1-8 can be freely combined to form other implementation methods of the present utility model.

[0080] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0081] In the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium; it may be the internal communication between two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0082] In the present utility model, unless otherwise clearly defined and limited, when the first feature is "on" or "under" the second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when the first feature is "above", "over" and "on top of" the second feature, it may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. When the first feature is "under", "beneath" and "underneath" the second feature, it may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0083] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to these process, article, or apparatus / device.

[0084] So far, the technical solution of the present utility model has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present utility model.

Claims

1. A linear profile cold rolling forming device, suitable for forming a straight profile (100) with an empty bend shape, wherein a transverse extension portion (101) is formed in the middle of the straight profile (100), and both ends of the straight profile (100) form an inwardly extending closing portion (102), comprising a first lower pressing roller (12), a first upper pressing roller (11) and two first side pressing rollers (13), wherein the first upper pressing roller (11), the first side pressing roller (13) and the first lower pressing roller (12) enclose a first forming area of ​​the straight profile (100), characterized in that: The first lower pressing roller (12) has a first flange (121) in the middle and second flanges (122) located on both sides of the first flange (121); the outer diameter of the first flange (121) is greater than the outer diameter of the second flange (122); the width of the first flange (121) matches the width of the linear profile (100) and is smaller than the width of the transverse extension portion (101), so as to allow a bending position of the closing portion (102) to be left open while supporting the transverse extension portion; When the first side pressure roller (13) presses the side wall of the linear profile (100), the first flange (121) and the first upper pressure roller (11) can press the middle position of the transverse extension portion (101), and the second flange (122) can support the closing portion (102).

2. The linear profile cold rolling forming device according to claim 1, characterized in that: The linear profile (100) further comprises a folding portion (103) connecting the transversely extending portion (101) and the closing portion (102), and the first side pressure roller (13) acts on the folding portion (103).

3. A linear profile cold rolling forming system, characterized in that: The cold rolling forming device according to claim 1 or 2, further comprising a cold rolling shaping device (2) located at the downstream side of the cold rolling forming device (1), wherein the cold rolling shaping device (2) comprises a second lower pressing roller (22), a second upper pressing roller (21) and two second side pressing rollers (23) which enclose a second forming area; The outer edge of the second lower pressing roller (22) forms a supporting portion (220), and when the second side pressing roller (23) squeezes the linear profile (100), the supporting portion (220) supports the closing portion (102), so as to compensate for the deformation of the transverse extension portion (101) through the reaction force of the supporting portion (220) on the closing portion (102); The width of the supporting portion (220) matches and is smaller than the distance between the outer edges of the two closing portions (102) of the linear profile (100).

4. The linear profile cold rolling forming system according to claim 3, characterized in that: The cold rolling forming devices are arranged in a plurality along the length direction of the linear profile, and the width of the first flange corresponding to the upstream cold rolling forming device is greater than the width of the first flange corresponding to the downstream cold rolling forming device.

5. The linear profile cold rolling forming system according to claim 4, characterized in that: The height of the second lower pressing roller (22) is adjustable; The cold rolling forming device (1) and the cold rolling trimming device (2) both comprise two groups of support frames (14), the two groups of support frames (14) both extend vertically and are distributed on both sides of the straight profile (100) along the width direction of the straight profile (100); Both ends of the second lower pressing roller (22) are vertically slidably supported on the corresponding support frame (14); The cold rolling and shaping device (2) further comprises a first adjustment mechanism (24), wherein the first adjustment mechanism (24) is used to adjust the height of the second lower pressure roller (22).

6. The linear profile cold rolling forming system according to claim 5, characterized in that: The first adjustment mechanism (24) comprises a base (241) connected to the bottom side wall of the corresponding support frame (14), a rotating rod (242) rotatably connected to the base (241) and coaxial with the first lower pressure roller (12), a first screw (243) vertically rotatably connected to the base (241), a transmission assembly (244) supported on the base (241) and drivingly connected to the rotating rod (242) and the first screw (243), and a first sliding block (245) vertically slidably connected in the corresponding support frame (14); One end of the first lead screw (243) close to the first slider (245) is rotatably connected to the first slider (245) along a vertical axis, so that the first lead screw (243) can pull or push the first slider (245) to slide; The two rotating rods (242) corresponding to the two second lower pressure rollers (22) are an integrated structure; The transmission assembly (244) is one of a bevel gear assembly and a worm gear assembly.

7. The linear profile cold rolling forming system according to claim 6, characterized in that: The cold rolling forming device (1) and the cold rolling trimming device (2) both comprise a second adjustment mechanism (15), wherein the second adjustment mechanism (15) is used to adjust the height of the corresponding second upper pressing roller (21) and the first upper pressing roller (11).

8. The linear profile cold rolling forming system according to claim 7, characterized in that: The second adjustment mechanism (15) comprises a second lead screw (151) threadedly connected to a top side wall of the corresponding support frame (14), and a second slider (152) slidably connected inside the corresponding support frame (14); The first upper pressure roller (11) and the second upper pressure roller (21) are rotatably connected to the corresponding second slider (152), and the end of the second lead screw (151) close to the second slider (152) is rotatably connected to the second slider (152) along a vertical axis, so that the second lead screw (151) can pull or push the second slider (152) to slide.

9. The linear profile cold rolling forming system according to claim 8, characterized in that: The cold rolling forming device (1) and the cold rolling trimming device (2) both comprise a third adjustment mechanism (16) for adjusting the distance between the first side pressing roller (13) and the second side pressing roller (23) and the corresponding support frame (14); The third adjustment mechanism (16) comprises a connecting plate (161) fixedly connected to the supporting frame (14), a roller frame (162) slidably connected to the connecting plate (161) along the width direction of the linear profile (100), and the first side pressing roller (13) and the second side pressing roller (23) are correspondingly rotatably connected to the roller frame (162); The third adjustment mechanism (16) further comprises a bolt (163) threadedly connected to the roller frame (162), and one end of the bolt (163) abuts against the connecting plate (161).

10. A linear profile production line, characterized in that: It comprises the linear profile cold rolling forming system as claimed in any one of claims 3 to 9, and also comprises a punching system located at the downstream side of the linear profile cold rolling forming system and receiving the linear profile (100).

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