Double-layer cold-bending synthesis forming rolling mill

Abstract

The invention discloses a double-layer cold bending synthesis forming rolling mill which comprises a rack, a conveying device is arranged on the left side of an inner cavity of the rack, a forming mechanism is arranged on the right side of the inner cavity of the rack, a limiting mechanism is arranged in the inner cavity of the rack, a feeding mechanism is arranged on the left side of the rack, and the feeding mechanism comprises a feeding assembly, a rolling assembly and a rolling assembly; a circular plate is rotationally connected into the supporting plate. The invention relates to the technical field of cold bending synthesis forming equipment. According to the double-layer cold-bending synthesis forming rolling mill, the feeding mechanism is arranged, under driving of a fixing motor, free adjustment of the positions of multiple sets of fixing plates is achieved, coiled materials are externally supported and fixed through the fixing plates, the stability of the coiled materials in the follow-up machining and feeding process is kept, the coiled materials are positioned through a positioning assembly and a positioning plate, and the stability of the coiled materials is improved. The situation that the coiled material is scattered in the subsequent synthesis process is avoided, and the double-layer cold bending synthesis forming quality of the coiled material is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of cold-bending synthetic forming equipment, in particular to a double-layer cold-bending synthetic forming rolling mill. Background Art

[0002] The reference patent name is: An adjustable cold roll forming machine (patent publication number: CN217617020U, patent publication date: 2022.10.21), including a machine platform, multiple groups of roller assemblies, at least one detection module and a controller. The detection module and the roller assembly are adjacently installed on the machine platform. Each roller assembly includes a first roller, a second roller, a fixed frame and an adjustment assembly. The first roller and the second roller are relatively arranged between the fixed frame. The adjustment assembly is adjustably connected to the first roller and / or the second roller. The detection module is able to detect the surface shape and / or position of the workpiece on the adjacent side of the roller assembly. The controller is able to receive the position signal sent by the detection module and control the adjustment assembly to adjust the first roller and / or the second roller up and down, thereby realizing the adaptive active adjustment of the roller assembly through the cooperation of the detection module, greatly reducing the maintenance time of the mechanics and improving the production efficiency.

[0003] Based on what is described in the above-mentioned document: A cold-bending forming machine is a machine that uses sequentially configured multi-pass forming rollers to continuously bend metal plates and strips laterally to form profiles with specific cross-sections. However, the existing cold-bending forming machines have a single function and cannot achieve double-layer cold-bending synthetic forming operations. In addition, it is difficult to fix the coiled materials during the transportation process, and they are prone to deviation and scattering, which in turn affects the quality of subsequent finished products. For this reason, the present invention provides a double-layer cold-bending synthetic forming rolling mill. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a double-layer cold-bending synthetic forming rolling mill, which solves the problems that the existing cold-bending forming machines have a single function and cannot realize double-layer cold-bending synthetic forming operations, and are difficult to fix during the transportation process of the rolled coils, and are prone to deviation and scattering, thereby affecting the quality of subsequent finished products.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a double-layer cold-bending synthetic forming rolling mill, comprising a frame, a conveying device is provided on the left side of the inner cavity of the frame, a forming mechanism is provided on the right side of the inner cavity of the frame, a limiting mechanism is provided in the inner cavity of the frame, and a feeding mechanism is provided on the left side of the frame, wherein the feeding mechanism comprises:

[0006] The feeding assembly comprises a support plate, a circular plate is rotatably connected inside the support plate, a slide rail is fixedly connected to the front side of the circular plate, a fixed motor is fixedly connected to the rear side of the circular plate, one end of the output shaft of the fixed motor is fixedly connected to a rotating disk through a coupling, an arc groove is opened on the front side of the rotating disk, and the inner surface of the arc groove enables the fixed plate to slide through the transmission assembly;

[0007] The positioning component is arranged on the surface of the supporting plate.

[0008] Preferably, the transmission assembly includes a transmission block slidably mounted on the surface of the slide rail, the front side of the transmission block is fixedly connected to a transmission rod, the rear side of the transmission rod is fixedly connected to a sliding block, the surface of the sliding block is slidably connected to the inner surface of the arc groove, and the front side of the transmission rod is fixedly connected to the rear end of the fixed plate.

[0009] Preferably, the positioning assembly includes a positioning motor installed on the rear side of the support plate, one end of the output shaft of the positioning motor is fixedly connected to a positioning rod via a coupling, a symmetrical positioning block is fixedly connected to the surface of the positioning rod, a positioning screw is rotatably connected to the inner side of the positioning block, and the surface of the positioning screw enables the positioning plate to rotate through a linkage assembly.

[0010] Preferably, the linkage assembly includes a linkage block, the interior of the linkage block is threadedly connected to the surface of the positioning screw rod, the top of the linkage block is fixedly connected with a linkage plate, the interior of the linkage plate is slidingly connected to the surface of the positioning rod, and the bottom of the linkage plate is fixedly connected to the top of the positioning plate.

[0011] Preferably, the limiting mechanism includes a limiting motor installed at the bottom of the frame, one end of the output shaft of the limiting motor is fixedly connected to a rotating plate through a coupling, the bottom of the rotating plate enables the limiting plate to slide through a moving component, and the internal rotation of the limiting plate is connected to a limiting roller.

[0012] Preferably, the moving assembly includes a moving rod rotatably mounted at the bottom of the rotating plate, one end of the moving rod is rotatably connected to a moving block, the surface of the moving block is slidably connected to the interior of the frame, and the top of the moving block is fixedly connected to the bottom of the limit plate.

[0013] Preferably, a limit rod is fixedly connected to the inner wall of the frame, and the surface of the limit rod is slidably connected to the inside of the moving block.

[0014] Preferably, the forming mechanism includes a lower pressure roller rotatably mounted on the inner wall of the frame, a lifting plate slidably mounted inside the frame, and a forming motor installed on the rear side of the top of the frame; the inner wall of the lifting plate is rotatably connected to the upper pressure roller, a lifting rod is installed on the top of the front lifting plate, the surface of the lifting rod is slidably connected to the top of the frame, and the internal thread of the lifting plate on the rear side is connected to a control screw rod, the surface of the control screw rod is rotatably connected to the top of the frame, the top end of the control screw rod is fixedly connected to a control gear, the surface of the control gear is sleeved with a toothed belt, one end of the output shaft of the forming motor is fixedly connected to the forming gear through a coupling, and the surface of the forming gear is meshed with the inner surface of the toothed belt.

[0015] Beneficial Effects

[0016] The present invention provides a double-layer cold-bending synthetic forming rolling mill. Compared with the prior art, it has the following beneficial effects:

[0017] (1) The double-layer cold-bending synthetic forming rolling mill starts a fixed motor to drive the rotating disk to rotate. The rotation of the rotating disk causes the sliding block to slide on the inner surface of the arc groove, thereby causing the four groups of sliding blocks, the transmission rod, the transmission block and the fixed plate to slide outward synchronously. The transmission block slides on the surface of the slide rail, and the coil is supported and fixed by the fixed plate. Subsequently, the positioning motor is started to drive the positioning rod, the positioning block, the positioning plate, the linkage block, the linkage plate and the positioning screw to rotate synchronously, so that the positioning plate rotates to the front side of the coil, and then the linkage block and the linkage plate are synchronously slid to the rear side by rotating the positioning screw, thereby driving the positioning plate to slide backward, and positioning the coil is positioned by the positioning plate. By providing a feeding mechanism, the positions of multiple groups of fixed plates can be freely adjusted under the drive of the fixed motor, and the coil is supported and fixed by the fixed plate to maintain the stability of the coil during the subsequent processing and feeding process. The coil is positioned by the positioning assembly and the positioning plate to avoid the coil from scattering during the subsequent synthesis process, thereby further improving the double-layer cold-bending synthetic forming quality of the coil.

[0018] (2) The double-layer cold-bending synthetic forming rolling mill starts the limit motor to drive the rotating plate to rotate. The rotation of the rotating plate causes one end of the moving rod to rotate at the bottom of the rotating plate, and the other end of the moving rod to rotate at the bottom of the moving block, thereby causing the moving block to slide synchronously to the opposite side on the surface of the limit rod. The sliding of the moving block drives the limit plate and the limit roller to slide synchronously, and the limit roller is used to limit the coil in transit. By setting a limit mechanism and using the limit motor to drive, the distance between the two groups of limit rollers can be flexibly adjusted. The limit roller is used to center the coil in transit to avoid the coil from being offset during the transportation process, thereby improving the double-layer cold-bending synthetic forming quality of the coil.

[0019] (3) The double-layer cold-bending synthetic forming mill starts the forming motor to drive the forming gear to rotate. The rotation of the forming gear drives the toothed belt and the control gear to rotate synchronously. The rotation of the control gear drives the front and rear lifting plates, the upper pressure roller and the lifting rod to slide up and down synchronously, so as to adjust the distance between the upper pressure roller and the lower pressure roller. The upper pressure roller and the lower pressure roller are driven to rotate synchronously in opposite directions by starting the driving device to realize the cold-bending synthetic forming operation of the coil. By providing a forming mechanism and utilizing the drive of the forming motor, the height of multiple groups of upper pressure rollers can be quickly adjusted, thereby improving work efficiency. The double-layer cold-bending synthetic forming mill can be applied to coils of different thicknesses, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the external structure of the present invention;

[0021] Figure 2 It is a three-dimensional schematic diagram of the forming mechanism of the present invention;

[0022] Figure 3 For the present invention Figure 2 The enlarged schematic diagram at A in the middle;

[0023] Figure 4 It is a three-dimensional schematic diagram of the feeding assembly of the present invention;

[0024] Figure 5 is a three-dimensional schematic diagram of a positioning assembly of the present invention;

[0025] Figure 6 It is a three-dimensional schematic diagram of the limiting mechanism of the present invention.

[0026] In the figure: 1-frame, 2-conveying device, 3-forming mechanism, 31-lower pressure roller, 32-lifting plate, 33-upper pressure roller, 34-lifting rod, 35-control screw rod, 36-control gear, 37-toothed belt, 38-forming motor, 39-forming gear, 4-limiting mechanism, 41-limiting motor, 42-rotating plate, 43-moving assembly, 431-moving rod, 432-moving block, 44-limiting plate, 45-limiting roller, 5-feeding mechanism, 51-feeding group Parts, 511-support plate, 512-circular plate, 513-slide rail, 514-fixed motor, 515-rotating disk, 516-arc groove, 517-fixed plate, 52-positioning assembly, 521-positioning motor, 522-positioning rod, 523-positioning block, 524-positioning screw, 525-positioning plate, 6-transmission assembly, 61-transmission block, 62-transmission rod, 63-sliding block, 7-linkage assembly, 71-linkage block, 72-linkage plate, 8-limiting rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-6 , the present invention provides two technical solutions:

[0029] Embodiment 1

[0030] A double-layer cold-bending composite forming rolling mill comprises a frame 1, a conveying device 2 is provided on the left side of the inner cavity of the frame 1, the conveying device 2 is provided with an upper and a lower group, respectively used to convey two groups of coils, and both are driven to rotate by a conveying motor, a forming mechanism 3 is provided on the right side of the inner cavity of the frame 1, a limiting mechanism 4 is provided in the inner cavity of the frame 1, and a feeding mechanism 5 is provided on the left side of the frame 1, and the feeding mechanism 5 includes:

[0031] The feeding assembly 51 includes a support plate 511, a circular plate 512 is rotatably connected inside the support plate 511, a slide rail 513 is fixedly connected to the front side of the circular plate 512, and the slide rail 513 is used to slide and limit the transmission block 61, a fixed motor 514 is fixedly connected to the rear side of the circular plate 512, and the fixed motor 514 is a three-phase asynchronous motor and is connected to an external circuit through wires, one end of the output shaft of the fixed motor 514 is fixedly connected to a rotating disk 515 through a coupling, and an arc groove 516 is opened on the front side of the rotating disk 515, and the inner surface of the arc groove 516 allows the fixed plate 517 to slide through the transmission assembly 6;

[0032] The positioning assembly 52 is arranged on the surface of the support plate 511. The transmission assembly 6 includes a transmission block 61 slidably mounted on the surface of the slide rail 513. The front side of the transmission block 61 is fixedly connected to a transmission rod 62. The rear side of the transmission rod 62 is fixedly connected to a sliding block 63. The surface of the sliding block 63 is slidably connected to the inner surface of the arc groove 516. The front side of the transmission rod 62 is fixedly connected to the rear end of the fixed plate 517. The positioning assembly 52 includes a positioning motor 521 mounted on the rear side of the support plate 511. The positioning motor 521 is a three-phase asynchronous motor and is connected to an external circuit through wires. One end of the output shaft of the positioning motor 521 is connected to the coupling. The device is fixedly connected with a positioning rod 522, and a relatively symmetrical positioning block 523 is fixedly connected to the surface of the positioning rod 522. The inner side of the positioning block 523 is rotatably connected with a positioning screw rod 524. A control block is installed at the front end of the positioning screw rod 524. The surface of the positioning screw rod 524 causes the positioning plate 525 to rotate through a linkage component 7. The linkage component 7 includes a linkage block 71. The interior of the linkage block 71 is threadedly connected to the surface of the positioning screw rod 524. The top of the linkage block 71 is fixedly connected with a linkage plate 72. The interior of the linkage plate 72 is slidably connected to the surface of the positioning rod 522. The bottom of the linkage plate 72 is fixedly connected to the top of the positioning plate 525. By starting the fixed motor 514, the rotating disk 515 is driven to rotate. The rotation of the rotating disk 515 causes the sliding block 63 to slide on the inner surface of the arc groove 516, so that the four groups of sliding blocks 63, the transmission rod 62, the transmission block 61 and the fixed plate 517 slide outward synchronously. The transmission block 61 slides on the surface of the slide rail 513, and the coil is supported and fixed by the fixed plate 517. Subsequently, by starting the positioning motor 521, the positioning rod 522, the positioning block 523, the positioning plate 525, the linkage block 71, the linkage plate 72 and the positioning screw 524 are driven to rotate synchronously, so that the positioning plate 525 rotates to the front side of the coil, and then the positioning motor 521 is driven to rotate synchronously. The screw rod 524 causes the linkage block 71 and the linkage plate 72 to slide backward synchronously, thereby driving the positioning plate 525 to slide backward, and the coil is positioned by the positioning plate 525. By providing a feeding mechanism 5, the positions of multiple sets of fixed plates 517 can be freely adjusted under the drive of the fixed motor 514. The coil is supported and fixed by the fixed plate 517 to maintain the stability of the coil during subsequent processing and feeding. The positioning assembly 52 is used to position the rolled coil using the positioning plate 525 to avoid scattering of the coil during subsequent synthesis, thereby further improving the double-layer cold-bending synthesis molding quality of the coil.

[0033] Embodiment 2

[0034] The main difference from the first embodiment is:

[0035] A double-layer cold-bending synthetic forming rolling mill, wherein the limiting mechanism 4 includes a limiting motor 41 installed at the bottom of a frame 1, the limiting motor 41 is a three-phase asynchronous motor, and is connected to an external circuit through wires, one end of the output shaft of the limiting motor 41 is fixedly connected to a rotating plate 42 through a coupling, the bottom of the rotating plate 42 is made to slide by a moving component 43, the internal rotation of the limiting plate 44 is connected to a limiting roller 45, the moving component 43 includes a moving rod 431 rotatably installed at the bottom of the rotating plate 42, one end of the moving rod 431 is rotatably connected to a moving block 432, the surface of the moving block 432 is connected to the inside of the frame 1 for sliding, a slide groove is provided at the bottom of the inner cavity of the frame 1, the moving block 432 slides on the inner surface of the slide groove, the top of the moving block 432 is fixedly connected to the bottom of the limiting plate 44, the inner wall of the frame 1 is fixedly connected to the limiting rod 8, the limiting rod 8 The movable block 432 is used to perform sliding limit on the movable block 432. The surface of the limit rod 8 is slidably connected with the inside of the movable block 432. The rotating plate 42 is driven to rotate by starting the limit motor 41. The rotation of the rotating plate 42 causes one end of the movable rod 431 to rotate at the bottom of the rotating plate 42, and the other end of the movable rod 431 rotates at the bottom of the movable block 432, thereby causing the movable block 432 to slide synchronously to the opposite side on the surface of the limit rod 8. The sliding of the movable block 432 drives the limit plate 44 and the limit roller 45 to slide synchronously, and the conveying coil is limited by the limit roller 45. By setting the limit mechanism 4, the distance between the two groups of limit rollers 45 can be flexibly adjusted under the drive of the limit motor 41, and the conveying coil is centered by the limit roller 45 to avoid the coil from being offset during the conveying process, thereby improving the double-layer cold bending synthesis molding quality of the coil.

[0036] Embodiment 3

[0037] The main differences from the first and third embodiments are:

[0038] A double-layer cold-bending synthetic forming rolling mill, the forming mechanism 3 includes a lower pressure roller 31 rotatably mounted on the inner wall of a frame 1, a lifting plate 32 slidably mounted inside the frame 1, and a forming motor 38 mounted on the rear side of the top of the frame 1. The forming motor 38 is a three-phase asynchronous motor and is connected to an external circuit through wires. The inner wall of the lifting plate 32 is rotatably connected to an upper pressure roller 33. The upper pressure roller 33 and the lower pressure roller 31 are driven to rotate synchronously by a rotating motor, a rotating gear and a rotating toothed belt. A lifting rod 34 is installed on the top of the front lifting plate 32. The surface of the lifting rod 34 is slidably connected to the top of the frame 1. A control screw rod 35 is connected to the internal thread of the rear lifting plate 32. The surface of the control screw rod 35 is rotatably connected to the top of the frame 1. The top of the control screw rod 35 is fixedly connected to a control gear 36. The surface of the control gear 36 is sleeved with a toothed belt 37. One end of the output shaft of the forming motor 38 is fixedly connected to the forming Gear 39, the surface of the forming gear 39 is meshed with the inner surface of the toothed belt 37, and the forming gear 39 is driven to rotate by starting the forming motor 38. The rotation of the forming gear 39 drives the toothed belt 37 and the control gear 36 to rotate synchronously. The rotation of the control gear 36 drives the front and rear lifting plates 32, the upper pressure roller 33 and the lifting rod 34 to slide up and down synchronously, so as to adjust the distance between the upper pressure roller 33 and the lower pressure roller 31, and drive the upper pressure roller 33 and the lower pressure roller 31 to rotate synchronously in opposite directions by starting the driving device to realize the cold bending synthetic forming operation of the coil. By providing the forming mechanism 3, the height of multiple groups of upper pressure rollers 33 can be quickly adjusted under the drive of the forming motor 38, thereby improving the work efficiency, so that the double-layer cold bending synthetic forming rolling mill can be suitable for coils of different thicknesses, and the practicability of the device is improved. At the same time, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0039] Before work, first, the two groups of coils to be synthesized are placed on the surface of the fixed plate 517, and then the fixed motor 514 is started to drive the rotating disk 515 to rotate. The rotation of the rotating disk 515 makes the sliding block 63 slide on the inner surface of the arc groove 516, so that the four groups of sliding blocks 63, the transmission rod 62, the transmission block 61 and the fixed plate 517 slide outward synchronously, and the transmission block 61 slides on the surface of the slide rail 513, and the coil is supported and fixed by the fixed plate 517. Subsequently, the positioning motor 521 is started to drive the positioning rod 522, the positioning block 523, the positioning plate 525, the linkage block 71, the linkage plate 72 and the positioning screw rod 524 to rotate synchronously, so that the positioning plate 525 rotates to the front side of the coil, and then the positioning screw rod 524 is rotated to make the linkage block 71 and the linkage plate 72 slide synchronously to the rear side, thereby driving the positioning plate 525 to slide backward, and the coil is positioned by the positioning plate 525 to prevent the coil from scattering during the subsequent synthesis process. The device 2 conveys the coil, and then drives the rotating plate 42 to rotate by starting the limit motor 41. The rotation of the rotating plate 42 makes one end of the moving rod 431 rotate at the bottom of the rotating plate 42, and the other end of the moving rod 431 rotates at the bottom of the moving block 432, so that the moving block 432 slides synchronously to the opposite side on the surface of the limit rod 8. The sliding of the moving block 432 drives the limit plate 44 and the limit roller 45 to slide synchronously, and the coil being conveyed is limited by the limit roller 45 to keep it in the center state, and the forming motor 38 is started to drive the forming gear 39 to rotate. The rotation of the forming gear 39 drives the toothed belt 37 and the control gear 36 to rotate synchronously. The rotation of the control gear 36 drives the lifting plates 32, the upper pressure roller 33 and the lifting rod 34 on the front and rear sides to slide up and down synchronously, so as to adjust the distance between the upper pressure roller 33 and the lower pressure roller 31, and the upper pressure roller 33 and the lower pressure roller 31 are driven to rotate synchronously in the opposite direction by starting the driving device, so as to realize the cold bending synthesis forming operation of the coil.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-layer cold-bending composite forming rolling mill, comprising a frame (1), characterized in that: A conveying device (2) is provided on the left side of the inner cavity of the frame (1), a forming mechanism (3) is provided on the right side of the inner cavity of the frame (1), a limiting mechanism (4) is provided in the inner cavity of the frame (1), and a feeding mechanism (5) is provided on the left side of the frame (1), wherein the feeding mechanism (5) comprises: A feeding assembly (51) comprises a support plate (511), wherein a circular plate (512) is rotatably connected inside the support plate (511), a slide rail (513) is fixedly connected to the front side of the circular plate (512), a fixed motor (514) is fixedly connected to the rear side of the circular plate (512), one end of the output shaft of the fixed motor (514) is fixedly connected to a rotating disk (515) via a coupling, an arc groove (516) is provided on the front side of the rotating disk (515), and the inner surface of the arc groove (516) enables the fixed plate (517) to slide via a transmission assembly (6); The positioning assembly (52) is arranged on the surface of the supporting plate (511).

2. A double-layer cold-bending composite forming rolling mill according to claim 1, characterized in that: The transmission assembly (6) comprises a transmission block (61) slidably mounted on the surface of the slide rail (513); the front side of the transmission block (61) is fixedly connected to a transmission rod (62); the rear side of the transmission rod (62) is fixedly connected to a sliding block (63); the surface of the sliding block (63) is slidably connected to the inner surface of the arc groove (516); and the front side of the transmission rod (62) is fixedly connected to the rear end of the fixed plate (517).

3. A double-layer cold-bending composite forming rolling mill according to claim 1, characterized in that: The positioning assembly (52) comprises a positioning motor (521) installed on the rear side of the support plate (511); one end of the output shaft of the positioning motor (521) is fixedly connected to a positioning rod (522) via a coupling; a symmetrical positioning block (523) is fixedly connected to the surface of the positioning rod (522); a positioning screw rod (524) is rotatably connected to the inner side of the positioning block (523); and the surface of the positioning screw rod (524) causes the positioning plate (525) to rotate via a linkage assembly (7).

4. A double-layer cold-bending composite forming rolling mill according to claim 3, characterized in that: The linkage assembly (7) comprises a linkage block (71), the interior of the linkage block (71) is threadedly connected to the surface of the positioning screw rod (524), the top of the linkage block (71) is fixedly connected to a linkage plate (72), the interior of the linkage plate (72) is slidably connected to the surface of the positioning rod (522), and the bottom of the linkage plate (72) is fixedly connected to the top of the positioning plate (525).

5. The double-layer cold-bending composite forming rolling mill according to claim 1, characterized in that: The limiting mechanism (4) comprises a limiting motor (41) mounted at the bottom of the frame (1); one end of the output shaft of the limiting motor (41) is fixedly connected to a rotating plate (42) via a coupling; the bottom of the rotating plate (42) enables a limiting plate (44) to slide via a moving component (43); the inside of the limiting plate (44) is rotatably connected to a limiting roller (45).

6. A double-layer cold-bending composite forming rolling mill according to claim 5, characterized in that: The moving assembly (43) comprises a moving rod (431) rotatably mounted on the bottom of the rotating plate (42); one end of the moving rod (431) is rotatably connected to a moving block (432); the surface of the moving block (432) is slidably connected to the inside of the frame (1); and the top of the moving block (432) is fixedly connected to the bottom of the limiting plate (44).

7. A double-layer cold-bending composite forming rolling mill according to claim 6, characterized in that: The inner wall of the frame (1) is fixedly connected to a limit rod (8), and the surface of the limit rod (8) is slidably connected to the inside of the moving block (432).

8. The double-layer cold-bending composite forming rolling mill according to claim 1, characterized in that: The forming mechanism (3) comprises a lower pressure roller (31) rotatably mounted on the inner wall of the frame (1), a lifting plate (32) slidably mounted inside the frame (1), and a forming motor (38) mounted on the rear side of the top of the frame (1); the inner wall of the lifting plate (32) is rotatably connected to an upper pressure roller (33); a lifting rod (34) is mounted on the top of the front lifting plate (32); the surface of the lifting rod (34) is slidably connected to the top of the frame (1); a control screw rod (35) is threadedly connected to the inner wall of the lifting plate (32) on the rear side; the surface of the control screw rod (35) is rotatably connected to the top of the frame (1); the top of the control screw rod (35) is fixedly connected to a control gear (36); the surface of the control gear (36) is sleeved with a toothed belt (37); one end of the output shaft of the forming motor (38) is fixedly connected to a forming gear (39) through a coupling; the surface of the forming gear (39) is meshed with the inner surface of the toothed belt (37).

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