Roll forming device and profile forming production line

Abstract

The application discloses a roll forming device and a profile forming production line. The upper roll assembly and the lower roll assembly of the roll forming device each comprise a transmission shaft, at least one pair of forming roller pairs, a support seat and an adjusting mechanism. Each forming roller pair comprises two forming rollers. Each forming roller is arranged on the transmission shaft and rotates with the transmission shaft. At least part of the forming rollers comprises an adjusting roller which is movable along the axial direction of the transmission shaft. The support seat supports the transmission shaft. The adjusting mechanism comprises a cylinder assembly and a push-pull piece. The push-pull piece is used for connecting the adjusting roller and the corresponding cylinder assembly, so that the push-pull piece can drive the corresponding adjusting roller to move along the axial direction of the transmission shaft under the drive of the cylinder assembly. According to the application, the corresponding adjusting roller is driven to move along the transmission shaft by the mode of the cylinder assembly combined with the push-pull piece, so that the forming channel is adjusted on line along the axial direction of the transmission shaft. Since the mode of the cylinder combined with the push-pull piece has smaller resistance, the on-line adjustment can be realized, and the production efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of metallurgical technology, and in particular relates to a roll forming device and a profile forming production line. Background Technology

[0002] The cavity of the roll forming device is constructed by the outer contour of each forming roller. In order for the same roll forming device to process steel of different specifications, the position of the forming roller needs to be adjusted so that the size of the cavity changes.

[0003] Forming rollers are typically mounted on a drive shaft. Currently, to adjust the cavity size along the axial direction of the drive shaft, a screw-nut mechanism is used. Each forming roller has a corresponding nut, and a screw is installed on the roll forming device. The screw and nut work together; driving the screw to rotate moves the corresponding nut, thus moving the forming roller. This method allows for adjustment of the cavity size along the axial direction of the drive shaft. However, due to the slender screw and the high frictional resistance and gaps between the nut and the screw, adjustment generally requires stopping the machine, making online adjustment difficult and impacting production efficiency. Summary of the Invention

[0004] The main objective of this invention is to provide a roll forming device and a profile forming production line to achieve online adjustment of the cavity dimensions along the axial direction of the drive shaft, thereby improving production efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A roll forming apparatus includes a frame, an upper roll assembly, and a lower roll assembly, wherein both the upper roll assembly and the lower roll assembly include:

[0007] transmission shaft;

[0008] At least one pair of forming rollers, each pair of forming rollers including two forming rollers, each forming roller being disposed on the drive shaft and rotating with the drive shaft, at least a portion of the forming rollers including an adjusting roller movable in the axial direction of the drive shaft;

[0009] Support base, supporting the drive shaft;

[0010] The adjustment mechanism includes a hydraulic cylinder assembly and a push-pull component. The push-pull component connects the adjustment roller and the corresponding hydraulic cylinder assembly so that the push-pull component can drive the corresponding adjustment roller to move along the axial direction of the transmission shaft under the drive of the hydraulic cylinder assembly.

[0011] Optionally, the cylinder assembly includes:

[0012] A rotating sleeve that can rotate with the drive shaft, the rotating sleeve having a first end and a second end that are opposite to each other;

[0013] A fixed body is fixedly installed on the support base, and the rotating sleeve is rotatably installed in the fixed body. The fixed body has a first hollow space and a second hollow space distributed at both ends of the rotating sleeve. Both the first hollow space and the second hollow space are connected to the internal space of the rotating sleeve.

[0014] A piston is disposed in the internal space of the rotating sleeve;

[0015] The push-pull component is connected to the piston of the hydraulic cylinder assembly.

[0016] Optionally, the piston of the cylinder assembly is sleeved on the drive shaft, and the fixed body is sleeved around the drive shaft. The drive shaft passes through the first hollow space, the internal space and the second hollow space in sequence, so that the rotating sleeve, the fixed body and the drive shaft together form an oil cavity.

[0017] Optionally, the cylinder assembly is disposed at one end of the transmission shaft so that the rotating sleeve and the fixed body together form an oil chamber.

[0018] Optionally, the push-pull member is connected to the piston of the corresponding hydraulic cylinder assembly, and a guide channel for accommodating the push-pull member is provided on the drive shaft. The guide channel extends along the axial direction of the drive shaft, and the length direction of the push-pull member is consistent with the axial direction of the drive shaft, so that the push-pull member can move axially along the drive shaft within the guide channel.

[0019] Optionally, the guide channel is an internal channel formed inside the drive shaft.

[0020] Optionally, at least one pair of forming rollers has at least one pair of adjusting rollers, wherein the two adjusting rollers of each pair of adjusting rollers are a first adjusting roller and a second adjusting roller, and the adjusting mechanism accordingly includes a first hydraulic cylinder assembly and a second hydraulic cylinder assembly, wherein the push-pull member connecting the first hydraulic cylinder assembly and the first adjusting roller is a push-pull rod, and the push-pull member connecting the second hydraulic cylinder assembly and the second adjusting roller is a push-pull sleeve;

[0021] The push-pull sleeve is fitted in the internal channel and is fitted over the push-pull rod. The push-pull rod is connected to the first adjusting roller and the corresponding piston respectively through a first connecting member. The push-pull sleeve is connected to the second adjusting roller and the corresponding piston respectively through a second connecting member. The drive shaft is provided with multiple clearance grooves, which are used to avoid the first connecting member or the second connecting member.

[0022] Optionally, the guide channel is a strip-shaped slot formed on the surface of the drive shaft.

[0023] Optionally, at least one pair of forming rollers has at least one pair of adjusting rollers, wherein the two adjusting rollers of each pair of adjusting rollers are a first adjusting roller and a second adjusting roller, and the adjusting mechanism accordingly includes a first hydraulic cylinder assembly and a second hydraulic cylinder assembly, wherein the push-pull member connecting the first hydraulic cylinder assembly and the first adjusting roller is a first push-pull rod, and the push-pull member connecting the second hydraulic cylinder and the adjusting roller is a second push-pull rod;

[0024] The first push-pull rod and the second push-pull rod are each disposed in the corresponding strip-shaped slot along the circumferential direction of the drive shaft. The first push-pull rod and the second push-pull rod are staggered. The push-pull rod is connected to or integrally formed with the corresponding piston. The push-pull sleeve is connected to or integrally formed with the corresponding piston. The push-pull sleeve is connected to the second adjusting roller through the second connecting member.

[0025] Optionally, the first hydraulic cylinder assembly, the second hydraulic cylinder assembly, and the corresponding forming roller pair are distributed sequentially along the axial direction of the drive shaft;

[0026] or

[0027] The second hydraulic cylinder assembly, the first hydraulic cylinder assembly, and the corresponding forming roller pair are distributed sequentially along the axial direction of the drive shaft.

[0028] Optionally, at least one pair of forming rollers has at least one pair of adjusting rollers, wherein the two adjusting rollers of each pair of adjusting rollers are a first adjusting roller and a second adjusting roller, and the adjusting mechanism accordingly includes a first hydraulic cylinder assembly corresponding to the first adjusting roller and a second hydraulic cylinder assembly corresponding to the second adjusting roller.

[0029] Optionally, the forming roller is a single roller;

[0030] or

[0031] The forming roller includes a left sub-roller and a right sub-roller. The left sub-roller is one of the adjusting rollers in the adjusting roller pair, and the right sub-roller is the other adjusting roller in the adjusting roller pair.

[0032] Optionally, in the fixing body of the first hydraulic cylinder assembly and the fixing body of the second hydraulic cylinder assembly, one fixing body is an intermediate fixing body directly mounted on the support base, and the other fixing body is indirectly disposed on the support base by being mounted on the intermediate fixing body; or the fixing body of the first hydraulic cylinder assembly and the fixing body of the second hydraulic cylinder assembly are each disposed on the support base.

[0033] Optionally, the roll forming device is a single-flow roll forming device, and both the upper roll assembly and the lower roll assembly are each provided with a pair of forming rolls;

[0034] or

[0035] The roll forming device is a dual-flow roll forming device, and both the upper roll assembly and the lower roll assembly are equipped with two pairs of forming rolls.

[0036] Accordingly, the present invention also provides a profile forming production line, characterized in that it includes any of the roll forming devices described above.

[0037] Optionally, the profile forming production line further includes a hot-rolled strip mill or a hot-rolled medium-thick plate mill, and the roll forming device is connected to the hot-rolled strip mill or the hot-rolled medium-thick plate mill. The roll forming device utilizes the waste heat of the hot-rolled strip mill or the hot-rolled medium-thick plate mill to produce open or closed profiles.

[0038] Optionally, the roll forming device is a dual-flow roll forming device, and a slitting and trimming device is provided at the inlet of the roll forming device.

[0039] Optionally, the roll forming device is a pressure welding machine, and the pressure welding machine is equipped with a heat replenishment device at its inlet.

[0040] Optionally, the profile forming production line is a cold-formed steel production line, which is used to produce open or closed structural steel.

[0041] In this invention, a hydraulic cylinder assembly combined with a push-pull component is used to drive the corresponding adjusting roller to move along the transmission shaft, thereby enabling online adjustment of the dimensions of the forming channel along the axial direction of the transmission shaft. Since the hydraulic cylinder combined with the push-pull component results in less resistance during operation, online adjustment can be achieved, which is beneficial to improving production efficiency. Attached Figure Description

[0042] Figure 1 The diagram shown is an exemplary structural schematic of the roll forming apparatus of the present invention (dual-flow with vertical rollers).

[0043] Figure 2 for Figure 1 Side view;

[0044] Figure 3 for Figure 1 Enlarged view of point A;

[0045] Figure 4 for Figure 1 Enlarged view of point B;

[0046] Figure 5 for Figure 1 PP section view;

[0047] Figure 6 for Figure 1 XX-direction sectional view;

[0048] Figure 7 This is a schematic diagram of another exemplary structure of the upper roller assembly or lower roller assembly in the roll forming apparatus of the present invention.

[0049] Figure 8 for Figure 7 Enlarged view at point C;

[0050] Figure 9 for Figure 7 EE-directed sectional view;

[0051] Figure 10 for Figure 7 FF section view;

[0052] Figure 11 The diagram shown is an exemplary structural schematic of the roll forming apparatus of the present invention employing a dual-flow structure (without vertical rollers);

[0053] Figure 12 The diagram shown is an exemplary structural schematic of the roll forming apparatus of the present invention employing a single-flow structure.

[0054] Figure 13 The diagram shows an exemplary structural schematic of the roll forming apparatus of the present invention, which employs a dual-flow structure and a slanted forming roller.

[0055] Figure 14 for Figure 13 A partial structural diagram of the upper roller assembly and the vertical roller assembly in the roll forming device;

[0056] Figure 15 for Figure 13 A partial structural diagram of the lower roller assembly and the vertical roller assembly in a roll forming device.

[0057] Explanation of reference numerals in the attached figures:

[0058] Frame 10, upper roller assembly 20, lower roller assembly 30, vertical roller assembly 40, lifting device 50;

[0059] Drive shaft 210, guide channel 211;

[0060] Support base 220;

[0061] Forming roller pair 230, forming roller 231, left sub-roller 2311, right sub-roller 2312, adjusting roller, first adjusting roller A1, second adjusting roller A2;

[0062] Hydraulic cylinder assembly 240, first hydraulic cylinder assembly 240a, second hydraulic cylinder assembly 240b, rotating sleeve 241, internal space 2411, fixed body 242, first hollow space 2421, second hollow space 2422, piston 243, bearing 244;

[0063] Push-pull component 250, push-pull rod 251, push-pull sleeve 252, first push-pull rod 253, second push-pull rod 254;

[0064] First connector 261, second connector 262;

[0065] Forming channel B. Detailed Implementation

[0066] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.

[0067] It should be understood that the invention can be embodied in various forms and should not be construed as being limited to the embodiments set forth herein. Rather, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the accompanying drawings, the same reference numerals denote the same components throughout.

[0068] See also Figures 1 to 15 A roll forming apparatus includes a frame 10, an upper roll assembly 20 mounted on the frame 10, and a lower roll assembly 30 mounted on the frame 10. Both the upper roll assembly 20 and the lower roll assembly 30 include: a drive shaft 210, at least one pair of forming rolls 230, a support base 220, and an adjustment mechanism. Each pair of forming rolls 230 includes two forming rolls 231. Each forming roll 231 is mounted on the drive shaft 210 and rotates with the drive shaft 210. At least some of the forming rolls 231 include an adjustment roll that can move along the axial direction of the drive shaft 210. The support base 220 supports the drive shaft 210. The adjustment mechanism includes a hydraulic cylinder assembly 240 and a push-pull member 250. The push-pull member 250 connects the adjustment roll and the corresponding hydraulic cylinder assembly 240, so that the push-pull member 250 can drive the corresponding adjustment roll to move along the axial direction of the drive shaft 210 under the drive of the hydraulic cylinder assembly 240.

[0069] During operation, the power of the hydraulic cylinder assembly 240 in the roll forming apparatus of the present invention can be transmitted to the adjusting roller via the push-pull component 250, enabling the adjusting roller to move along the transmission shaft 210. At the same time, the push-pull method has less resistance than the threaded transmission method, which makes this roll forming apparatus more conducive to online adjustment of the axial position of the forming roller 231 along the transmission shaft 210, thereby improving production efficiency and reducing production costs. Furthermore, for roll forming apparatuses already in production, only the addition of an adjustment mechanism and corresponding modifications to the parts of the transmission shaft in the existing roll forming apparatus are needed to obtain the roll forming apparatus of the present invention, which is conducive to upgrading existing equipment at low cost.

[0070] It should be noted that the adjusting roller in the above and following embodiments can be a common adjusting roller with its axis parallel to the axis of the drive shaft 210, see [link to relevant documentation]. Figures 13 to 15 The adjusting roller can also be an inclined roller whose axis forms an angle with the axis of the drive shaft 210.

[0071] It should also be noted that the accompanying drawings of each embodiment only show the case where all forming rollers 231 are adjustment rollers. In actual implementation, if a pair of forming rollers 231 includes one or a pair of adjustment rollers, the axial position of the adjustment roller along the drive shaft 210 can be adjusted, that is, the dimension of the forming channel B (also called the cavity) along the axial direction can be adjusted online.

[0072] In some embodiments, see Figure 12 If the roll forming device is a single-flow roll forming device, then the corresponding upper roll assembly 20 and lower roll assembly 30 are each provided with a pair of forming rolls 230.

[0073] In other embodiments, see Figure 1 , Figure 11 , Figure 13 If the roll forming device is a dual-flow roll forming device, then the corresponding upper roll assembly 20 and the lower roll assembly are each equipped with two pairs of forming rolls 230.

[0074] In some embodiments, see reference Figure 1 , Figure 3 , Figure 4 , Figure 7 and Figure 8The cylinder assembly 240 includes a rotating sleeve 241, a fixed body 242, and a piston 243. The rotating sleeve 241 is rotatable with the transmission shaft 210 and has a first end and a second end facing away from each other. The fixed body 242 is fixedly mounted on the support base 220, and the rotating sleeve 241 is rotatably mounted inside the fixed body 242. The fixed body 242 has a first hollow space 2421 and a second hollow space 2422 distributed at both ends of the rotating sleeve 241. Both the first hollow space 2421 and the second hollow space 2422 are connected to the internal space 2411 of the rotating sleeve 241. The piston 243 is disposed in the internal space 2411 of the rotating sleeve 241. The push-pull member 250 is connected to the piston 243 of the cylinder assembly 240.

[0075] Referring to the figure, in actual implementation, a bearing 244 can be installed between the rotating sleeve 241 and the fixed body 242 to reduce the frictional resistance between the rotating sleeve 241 and the fixed body 242 and make the rotation smoother.

[0076] The hydraulic cylinder assembly 240 with this structure has a compact structure of the entire adjustment mechanism. The first oil port and the second oil port can be set on the fixed body 242. The first oil port is connected to the first hollow space 2421, and the second oil port is connected to the second hollow space 2422. This ensures that the oil inlet and oil outlet will not rotate with the rotating sleeve 241 and the piston 243, so that the hydraulic cylinder assembly 240 can operate smoothly.

[0077] It should be noted that the fixing body 242 here is an assembly of multiple parts, for example, Figure 4 The end cap is one of the parts of this fixed body.

[0078] In actual implementation, there are two ways to arrange the hydraulic cylinder assembly 240, which will be described in detail below:

[0079] For example, see also Figure 1 , Figure 3 , Figure 7 , Figure 8 The piston 243 of the cylinder assembly 240 and the fixed body 242 are both sleeved on the drive shaft 210. The drive shaft 210 sequentially passes through the first hollow space 2121, the internal space 2411, and the second hollow space 2422, so that the rotating sleeve 241, the fixed body 242, and the drive shaft 210 together form an oil chamber. When using this structure, a dynamic seal structure can be provided between the fixed body 242 and the drive shaft 210 to maintain a sealed oil chamber. The dynamic seal structure can be an existing dynamic seal structure, which will not be described in detail here.

[0080] For example, see also Figure 1 , Figure 4 The cylinder assembly 240 is disposed at one end of the transmission shaft 210 so that the rotating sleeve 241 and the fixed body 242 together form an oil cavity.

[0081] In some embodiments, see reference Figures 1 to 10 The push-pull member 250 is connected to the piston 243 of the corresponding hydraulic cylinder assembly 240. A guide channel 211 for accommodating the push-pull member 250 is provided on the drive shaft 210. The guide channel 211 extends along the axial direction of the drive shaft 210, and the length direction of the push-pull member 250 is consistent with the axial direction of the drive shaft 210, so that the push-pull member 250 can move axially along the drive shaft 210 within the guide channel 211. In this structure, the guide channel 211 is located on the drive shaft 210, resulting in a more compact structure. Furthermore, the guide channel 211 guides the push-pull member 250, which helps improve the reliability of equipment operation.

[0082] In actual implementation, the guide channel 211 can be formed inside the drive shaft 210 or on the surface of the drive shaft 210. This will be explained in detail below:

[0083] In some embodiments, see reference Figures 1 to 6 The guide channel 211 is an internal channel formed inside the drive shaft 210.

[0084] When the guide channel 211 is provided inside the drive shaft 210 in this way, the adjustment mechanism can be adopted as follows: at least one pair of forming rollers 230 has at least one pair of adjusting rollers, and the two adjusting rollers of each pair of adjusting rollers are respectively a first adjusting roller A1 and a second adjusting roller A2. The adjustment mechanism correspondingly includes a first hydraulic cylinder assembly 240a and a second hydraulic cylinder assembly 240b. The push-pull member 250 connecting the first hydraulic cylinder assembly 240a and the first adjusting roller A1 is a push-pull rod 251, and the push-pull member connecting the second hydraulic cylinder assembly 240b and the second adjusting roller A2 is... 250 is a push-pull sleeve 252; wherein, the push-pull sleeve 252 is fitted in the internal channel, and the push-pull sleeve 252 fits over the push-pull rod 251. The push-pull rod 251 is connected to the first adjusting roller A1 and the corresponding piston 243 respectively through a first connecting member 261. The push-pull sleeve 252 is connected to the second adjusting roller A2 and the corresponding piston 243 respectively through a second connecting member 262. The transmission shaft 210 is provided with multiple clearance grooves, which are used to avoid the first connecting member 261 or the second connecting member 262. In this way, for a set of adjustment mechanisms, only one opening is needed inside the transmission shaft 210 as an internal channel. Due to the cooperation between the push-pull sleeve 252 and the push-pull rod 251, the structure is more compact.

[0085] Of course, if only one of the two forming rollers 231 of a pair of adjusting rollers is used as an adjusting roller, then only one set of cylinder assembly 240 is set in the adjusting mechanism, and the corresponding push-pull component 250 can be a push-pull rod 251, without the need to set a push-pull sleeve 252.

[0086] In other implementations, see also Figures 7 to 10 The guide channel 211 is a strip-shaped slot formed on the surface of the drive shaft 210.

[0087] When the guide channel 211 is opened on the surface of the drive shaft 210 in this way, the adjustment mechanism can be adopted in the following manner: at least one pair of forming rollers 230 has at least one pair of adjusting rollers, and the two adjusting rollers of each pair of adjusting rollers are respectively a first adjusting roller A1 and a second adjusting roller A2. The adjustment mechanism correspondingly includes a first hydraulic cylinder assembly 240a and a second hydraulic cylinder assembly 240b. The push-pull member 250 connecting the first hydraulic cylinder assembly 240a and the first adjusting roller A1 is a first push-pull rod 253, and the push-pull member 250 connecting the second hydraulic cylinder and the adjusting roller is a second push-pull rod 254; wherein, the first A push-pull rod 253 and a second push-pull rod 254 are each disposed in the corresponding strip-shaped slot. Along the circumferential direction of the drive shaft 210, the first push-pull rod 253 and the second push-pull rod 254 are staggered. The push-pull rod 251 is connected to or integrally formed with the corresponding piston 243. The push-pull rod 251 is connected to the first adjusting roller and the corresponding piston 243 through a first connecting member 261. The push-pull sleeve 252 is connected to or integrally formed with the corresponding piston 243. The push-pull sleeve 252 is connected to the second adjusting roller A2 and the corresponding piston 243 through a second connecting member 262.

[0088] In this structure, there can be multiple strip slots on the surface of the drive shaft 210, and the strip slots for installing the first push-pull rod 253 are preferably evenly distributed along the circumference of the drive shaft 210, and the strip slots for installing the second push-pull rod 254 are preferably evenly distributed along the drive shaft 210, which is beneficial for the cylinder assembly 240 and the adjusting roller to be subjected to more uniform force.

[0089] It should be noted that in the above embodiments, a pin can be used as the first connector 261 and the second connector 262.

[0090] In some embodiments, see reference Figure 1 , Figure 4 , Figure 7 , Figure 8The first hydraulic cylinder assembly 240a, the second hydraulic cylinder assembly 240b, and the corresponding forming roller pair 230 are sequentially distributed along the axial direction of the drive shaft 210; in other embodiments, see also [reference needed]. Figure 1 , Figure 3 The second hydraulic cylinder assembly 240b, the first hydraulic cylinder assembly 240a, and the corresponding forming roller pair 230 are distributed sequentially along the axial direction of the drive shaft 210.

[0091] It should be noted that when using the push-pull rod 251 in conjunction with the push-pull sleeve 252, if the second cylinder assembly 240b, the first cylinder assembly 240a, and the corresponding forming roller pair 230 are distributed along the axial direction of the drive shaft 210, then the end of the push-pull rod 251 used to connect to the first cylinder assembly 240a is located inside the push-pull sleeve 252. In this case, a first through groove needs to be provided on the push-pull sleeve 252 so that the corresponding first connecting piece 261 can pass through the first through groove. Here, the position of the first through groove corresponds to the position of the corresponding clearance groove. If the first cylinder assembly 240a, the second cylinder assembly 240b, and the corresponding forming roller pair 230 are sequentially distributed along the axial direction of the drive shaft 210, and the end of the piston 243 on the push-pull rod 251 connected to the first cylinder assembly 240a extends out of the push-pull sleeve 252, then it is not necessary to provide the first through groove on the push-pull sleeve 252, and the structure is simpler and more reliable. Similarly, the end of the push-pull rod 251 that connects to the adjusting roller may not extend out of the push-pull sleeve 252. In this case, a second through groove needs to be provided on the push-pull sleeve 252 so that the corresponding first connecting piece 261 can pass through the second through groove. Of course, the end of the push-pull rod 251 that connects to the adjusting roller may also extend out of the push-pull sleeve 252. In this case, the second through groove does not need to be provided on the push-pull sleeve 252.

[0092] In some embodiments, see Figure 1 , Figure 7 , Figures 11 to 13 At least one pair of forming rollers has at least one pair of adjusting rollers, and the two adjusting rollers of each pair of adjusting rollers are a first adjusting roller A1 and a second adjusting roller A2, respectively. The adjusting mechanism correspondingly includes a first hydraulic cylinder assembly 240a corresponding to the first adjusting roller A1 and a second hydraulic cylinder assembly 240b corresponding to the second adjusting roller A2. In this structure, the fixing body 242 of the first hydraulic cylinder assembly 240a and the fixing body 242 of the second hydraulic cylinder assembly 240b can be installed in various ways, and the forming roller 231 can also be set in various ways.

[0093] The following describes the installation methods of the mounting body 242 of the first hydraulic cylinder assembly 240a and the mounting body 242 of the second hydraulic cylinder assembly 240b:

[0094] For example (not shown in the figure), the fixing body 242 of the first hydraulic cylinder assembly 240a and the fixing body 242 of the second hydraulic cylinder assembly 240b can each be disposed on the support base 220.

[0095] For example, see also Figure 3 , Figure 4 , Figure 8 In the fixing body 242 of the first hydraulic cylinder assembly 240a and the fixing body 242 of the second hydraulic cylinder assembly 240b, one fixing body 242 is an intermediate fixing body directly mounted on the support base 220, while the other fixing body 242 is indirectly disposed on the support base 220 through mounting on the intermediate fixing body. This method results in a more compact structure, and when using this structure, the fixing bodies 242 of the first hydraulic cylinder assembly 240a and the second hydraulic cylinder assembly 240b can share some parts, thus saving costs.

[0096] The following are examples of how the forming roller 231 can be configured:

[0097] For example, see Figure 1 , Figure 7 , Figure 11 , Figure 13 The forming roller 231 is a single roller. In this case, one adjusting roller is one forming roller 231.

[0098] For example, see also Figure 12 The forming roller 231 includes a left sub-roller 2311 and a right sub-roller 2312. The left sub-roller 2311 is one of the adjusting rollers in the adjusting roller pair, and the right sub-roller 2312 is the other adjusting roller in the adjusting roller pair. That is, the two sub-rollers of a single forming roller 231 correspond to the two forming rollers 231 of the forming roller pair 230.

[0099] For ease of understanding, please refer to sections 1 to 2. Figure 6 This diagram illustrates a dual-flow roll forming apparatus comprising an upper roll assembly 20, a lower roll assembly 30, and a vertical roll assembly 40. Both the upper roll assembly 20 and the lower roll assembly 30 are equipped with two pairs of forming rolls 230. All forming rolls 231 are adjustable rolls, specifically designated as a left forming roll pair 230 and a right forming roll pair 230. This creates a forming channel B between the left forming roll pair 230 of the upper roll assembly 20, the left forming roll pair 230 of the lower roll assembly 30, and the corresponding two vertical roll assemblies 40. Both the upper roll assembly 20 and the lower roll assembly 30 are equipped with lifting devices 50, allowing the forming channel B to be adjusted in height. The left forming roll pair 230 and the right forming roll pair 230 of the upper roll assembly 20 and the lower roll assembly 30 are each equipped with an adjustment mechanism, allowing the forming channel B to be adjusted in the axial direction (or width direction) along the drive shaft 210.

[0100] Figures 1 to 6 In the corresponding embodiment, the adjustment mechanism of the left forming roller pair 230 and the adjustment mechanism of the right forming roller pair 230 both have two hydraulic cylinder assemblies 240. Each pair of forming rollers 230 transmits the power of the two hydraulic cylinder assemblies 240 to the corresponding adjustment roller through the push-pull sleeve 252. The guide channel 211 is opened inside the transmission shaft 210 to guide the push-pull sleeve 252. In addition, the fixing body 242 of one hydraulic cylinder assembly 240 is mounted on the support base 220 through the fixing body 242 of the other hydraulic cylinder assembly 240. The difference between the adjustment mechanisms of the left forming roller pair 230 and the right forming roller pair 230 is as follows: For the adjustment mechanism of the left forming roller pair 230, both sets of hydraulic cylinder assemblies 240 adopt the method in the above scheme where the rotating sleeve, the fixed body 242 and the transmission shaft 210 jointly form the oil cavity; for the adjustment mechanism of the right forming roller pair 230, both sets of hydraulic cylinder assemblies 240 adopt the method in the above scheme where the rotating sleeve and the fixed body 242 jointly form the oil cavity.

[0101] Accordingly, the present invention also provides a profile forming production line, including the roll forming apparatus of any of the above embodiments. That is to say, the roll forming apparatus of each of the above embodiments can be applied to a profile production line.

[0102] For example, in some embodiments, the profile forming production line further includes a hot-rolled strip mill or a hot-rolled medium-thick plate mill, and the roll forming device is connected to the hot-rolled strip mill or the hot-rolled medium-thick plate mill. The roll forming device utilizes the waste heat of the hot-rolled strip mill or the hot-rolled medium-thick plate mill to produce open or closed profiles.

[0103] For ease of understanding, in some embodiments, 1 to 20 of the above-mentioned roll forming devices form a forming unit, which is installed after the hot rolling medium and heavy plate mill or the hot rolling strip mill. The thickness of the strip can be 2 to 60 mm, and the width of the strip can be 400 to 5500 mm.

[0104] See Figure 1 , Figure 11 , Figure 13 When the roll forming device is a dual-flow roll forming device, a slitting and trimming device is provided at the entrance of the roll forming device. This allows the slit steel strips to enter the two forming channels of the dual-flow roll forming device for roll forming.

[0105] See Figure 12 When the roll forming device is a pressure welding machine, a heat replenishment device is provided at the inlet of the pressure welding machine.

[0106] For example, in other embodiments, see [link to other embodiments]. Figure 1 , Figure 11 , Figure 13The profile forming production line can also be a cold-formed steel production line, which is used to produce open or closed structural steel.

[0107] In the description of this invention, unless otherwise expressly specified and limited, the “connection” of the first feature and the second feature may include a direct contact connection between the first and second features, or a connection between the first and second features not in direct contact but through another feature between them.

[0108] In the description of this invention, the singular forms “a,” “an,” and “the” are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms “comprising” and / or “including,” when used in this specification, identify the presence of said features, integers, steps, operations, components, and / or parts, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, and / or groups.

[0109] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A roll forming apparatus, comprising a frame, an upper roll assembly, and a lower roll assembly, characterized in that, Both the upper roller assembly and the lower roller assembly include: transmission shaft; At least one pair of forming rollers, each pair of forming rollers including two forming rollers, each forming roller being disposed on the drive shaft and rotating with the drive shaft, at least a portion of the forming rollers including an adjusting roller movable in the axial direction of the drive shaft; Support base, supporting the drive shaft; The adjustment mechanism includes a hydraulic cylinder assembly and a push-pull component. The push-pull component is used to connect the adjustment roller and the corresponding hydraulic cylinder assembly so that the push-pull component can drive the corresponding adjustment roller to move along the axial direction of the transmission shaft under the drive of the hydraulic cylinder assembly. The hydraulic cylinder assembly includes: a rotating sleeve, rotatable with the drive shaft, the rotating sleeve having a first end and a second end facing away from each other; a fixed body, fixedly mounted on the support base, the rotating sleeve being rotatably mounted in the fixed body, and the fixed body having a first hollow space and a second hollow space distributed at both ends of the rotating sleeve, both the first hollow space and the second hollow space communicating with the internal space of the rotating sleeve; and a piston disposed in the internal space of the rotating sleeve; wherein the push-pull member is connected to the piston of the hydraulic cylinder assembly.

2. The roll forming apparatus according to claim 1, characterized in that: The piston of the cylinder assembly is sleeved on the drive shaft, and the fixed body is sleeved on the periphery of the drive shaft. The drive shaft passes through the first hollow space, the internal space and the second hollow space in sequence, so that the rotating sleeve, the fixed body and the drive shaft together form an oil cavity.

3. The roll forming apparatus according to claim 1, characterized in that: The hydraulic cylinder assembly is located at one end of the transmission shaft so that the rotating sleeve and the fixed body together form an oil cavity.

4. The roll forming apparatus according to claim 1, characterized in that: The push-pull member is connected to the piston of the corresponding hydraulic cylinder assembly. A guide channel for accommodating the push-pull member is provided on the transmission shaft. The guide channel extends along the axial direction of the transmission shaft. The length direction of the push-pull member is consistent with the axial direction of the transmission shaft, so that the push-pull member can move axially along the transmission shaft within the guide channel.

5. The roll forming apparatus according to claim 4, characterized in that: The guide channel is an internal channel formed inside the drive shaft.

6. The roll forming apparatus according to claim 5, characterized in that: At least one pair of forming rollers has at least one pair of adjusting rollers, and the two adjusting rollers of each pair of adjusting rollers are a first adjusting roller and a second adjusting roller, and the adjusting mechanism accordingly includes a first hydraulic cylinder assembly and a second hydraulic cylinder assembly, the push-pull member connecting the first hydraulic cylinder assembly and the first adjusting roller is a push-pull rod, and the push-pull member connecting the second hydraulic cylinder assembly and the second adjusting roller is a push-pull sleeve; The push-pull sleeve is fitted in the internal channel and sleeved on the outside of the push-pull rod. The push-pull rod is connected to the first adjusting roller and the corresponding piston respectively through a first connecting member. The push-pull sleeve is connected to the second adjusting roller and the corresponding piston respectively through a second connecting member. The drive shaft is provided with a plurality of clearance grooves, which are used to avoid the first connecting member or the second connecting member.

7. The roll forming apparatus according to claim 6, characterized in that: The first hydraulic cylinder assembly, the second hydraulic cylinder assembly, and the corresponding forming roller pair are distributed sequentially along the axial direction of the drive shaft; or The second hydraulic cylinder assembly, the first hydraulic cylinder assembly, and the corresponding forming roller pair are distributed sequentially along the axial direction of the drive shaft.

8. The roll forming apparatus according to claim 1, characterized in that: At least one pair of forming rollers has at least one pair of adjusting rollers, wherein the two adjusting rollers of each pair of adjusting rollers are a first adjusting roller and a second adjusting roller, and the adjusting mechanism accordingly includes a first hydraulic cylinder assembly corresponding to the first adjusting roller and a second hydraulic cylinder assembly corresponding to the second adjusting roller.

9. The roll forming apparatus according to claim 8, characterized in that: The forming roller is a single roller; or The forming roller includes a left sub-roller and a right sub-roller. The left sub-roller is one of the adjusting rollers in the adjusting roller pair, and the right sub-roller is the other adjusting roller in the adjusting roller pair.

10. The roll forming apparatus according to claim 8, characterized in that: In the fixing body of the first hydraulic cylinder assembly and the fixing body of the second hydraulic cylinder assembly, one fixing body is an intermediate fixing body directly mounted on the support base, and the other fixing body is indirectly disposed on the support base by being mounted on the intermediate fixing body; or the fixing body of the first hydraulic cylinder assembly and the fixing body of the second hydraulic cylinder assembly are each disposed on the support base.

11. The roll forming apparatus according to claim 1, characterized in that: The roll forming device is a single-flow roll forming device, and both the upper roll assembly and the lower roll assembly are each equipped with a pair of forming rolls. or The roll forming device is a dual-flow roll forming device, and both the upper roll assembly and the lower roll assembly are equipped with two pairs of forming rolls.

12. A profile forming production line, characterized in that: The roll forming apparatus includes any one of claims 1-11.

13. The profile forming production line according to claim 12, characterized in that: The profile forming production line also includes a hot-rolled strip mill, and the roll forming device is connected to the hot-rolled strip mill. The roll forming device uses the waste heat of the hot-rolled strip mill to produce open or closed profiles.

14. The profile forming production line according to claim 13, characterized in that: The roll forming device is a dual-flow roll forming device, and a slitting and trimming device is provided at the inlet of the roll forming device.

15. The profile forming production line according to claim 13, characterized in that: The roll forming device is a pressure welding machine, and a heat replenishment device is installed at the inlet of the pressure welding machine.

16. The profile forming production line according to claim 12, characterized in that: The profile forming production line is a cold-formed steel production line, which is used to produce open or closed structural steel.

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