Sheet metal rolling machine

Abstract

The utility model aims at providing a kind of sheet metal rounder, including frame body and adjusting assembly, one side plate is respectively provided on the both ends of frame body, slide hole is opened in side plate, adjusting assembly includes sleeve roll, pressure roller, several tooth rings, several first racks and several second racks, the both ends of sleeve roll are respectively slidably arranged in each slide hole, pressure roller is arranged in sleeve roll, first rack and second rack are respectively arranged in slide hole, and each first rack is respectively located on the same inner side wall of each slide hole, each tooth ring is respectively arranged in the both ends of pressure roller, and tooth ring is engaged with first rack and second rack, to make first rack and second rack common clamping tooth ring, pressure roller simultaneously drives each tooth ring to be disengaged from engagement with each first rack, to make pressure roller drive each tooth ring respectively along the setting direction of each second rack synchronous rolling.

Description

Technical Field

[0001] This utility model relates to the technical field of sheet metal processing, and in particular to a sheet metal rolling machine. Background Technology

[0002] In the field of sheet metal processing, the application scenarios for sheet metal parts are becoming increasingly complex. From heavy machine tool housings and protective structures for precision instruments to conveying equipment cavities and pressure vessel components, flat sheet metal parts can no longer meet the diverse needs of equipment for structural strength, spatial adaptability, and aesthetic practicality. Curved sheet metal parts can specifically solve these problems, becoming a core carrier for improving the overall performance of mechanical equipment and achieving structural innovation. Their forming quality directly determines the functional reliability and service life of the equipment. Currently, the sheet metal rolling machines widely used in the industry generally adopt the classic layout of "double load-bearing rollers and a single pressure roller" in their core structure. This involves placing the sheet metal workpiece horizontally on two parallel load-bearing rollers. The two load-bearing rollers act as a support structure, jointly bearing the weight of the sheet metal workpiece and ensuring its stable transport during processing. The pressure roller is positioned directly above the two load-bearing rollers, and the axis of the pressure roller is parallel to the axes of the two load-bearing rollers. In the actual processing, the operator adjusts the tangential distance between the pressure roller and the two bearing rollers to change the pressure applied to the sheet metal part, thereby deforming the sheet metal part under pressure and eventually bending it into a curved shape that meets the design requirements.

[0003] However, existing sheet metal rolling machines have the following shortcomings in practical use: The adjustment of the pressure roller in existing rolling machines mainly relies on two independent screws located at both ends of the pressure roller. That is, one screw corresponds to the left end and the other to the right end of the pressure roller. Operators need to gradually control the pressure roller to move closer to or away from the two carrier rollers by alternately rotating the two screws. Specifically, the operator first makes a small adjustment to the left screw, then a small adjustment to the right screw, and then adjusts the left screw again, repeating this "left-right-left-right" alternating operation to gradually adjust the pressure roller to the target position. During this process, there is an unavoidable time difference and operational error in the adjustment actions at both ends of the pressure roller, causing the two ends of the pressure roller to not move closer to or away from the carrier rollers synchronously. This results in a significant difference in the distance between the two ends of the pressure roller and the carrier rollers. Ultimately, this leads to inconsistent curvature at both ends of the finished sheet metal part, specifically, one side of the sheet metal part has a larger curvature and the other side has a smaller curvature, seriously affecting the surface forming accuracy and overall processing quality of the sheet metal workpiece. In view of this, the sheet metal rolling machine of this application is hereby proposed. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a sheet metal rolling machine that achieves synchronous adjustment to improve the convenience of adjustment operation, the forming accuracy of workpiece curved surfaces, and the overall processing quality.

[0005] The objective of this utility model is achieved through the following technical solution: A sheet metal rolling machine, comprising: The frame has a side plate at each end, and the side plate has sliding holes; and An adjusting assembly includes a sleeve roller, a pressure roller, several toothed rings, several first toothed racks, and several second toothed racks. The two ends of the sleeve roller are slidably disposed within each of the sliding holes. The pressure roller passes through the sleeve roller, with its two ends extending from both ends of the sleeve roller. The first and second toothed racks are respectively disposed on two opposing inner sidewalls of the sliding holes, with each first toothed rack located on the same inner sidewall of each sliding hole and close to the side facing the same direction as each side plate. Each toothed ring is coaxially disposed at both ends of the pressure roller, and each toothed ring meshes with both the first and second toothed racks, so that the first and second toothed racks together clamp the toothed rings. When the pressure roller is subjected to external force and slides along the axial direction of the sleeve roller, the pressure roller simultaneously drives each toothed ring to disengage from each of the first toothed racks, so that the pressure roller drives each toothed ring to roll synchronously along the setting direction of each of the second toothed racks.

[0006] Optionally, the width of the first rack is smaller than the width of the second rack.

[0007] Optionally, the thickness of the toothed ring is the same as the width of the first toothed rack.

[0008] Optionally, the pressure roller is provided with a clearance portion, the diameter of which is smaller than the diameter of the toothed ring.

[0009] Optionally, the adjustment assembly further includes a handwheel, which is coaxially disposed on the pressure roller and is used to drive the pressure roller to slide or rotate relative to the sleeve roller.

[0010] Optionally, a groove is provided on the inner sidewall of the sliding hole, and a slide rail is provided at the end of the sleeve roller, the slide rail being slidably engaged with the groove.

[0011] Optionally, the adjusting assembly further includes an outer roller, which is coaxially sleeved on the sleeve roller and is used to abut against the sheet metal workpiece.

[0012] Optionally, the sheet metal rolling machine further includes several bearing rollers, with each bearing roller having its two ends rotatably connected to each of the side plates, and each bearing roller and the outer roller jointly pressing the sheet metal workpiece.

[0013] Optionally, the sheet metal rolling machine further includes a driving component, a connecting belt, and several connecting wheels. Each connecting wheel is respectively disposed on the output shaft of the driving component and on each of the bearing rollers. The connecting belt is sleeved on each of the connecting wheels so that the driving component drives each of the bearing rollers to rotate.

[0014] Optionally, the adjustment assembly further includes a plurality of anti-detachment shells, each of which is disposed on each of the side plates, and each of the anti-detachment shells is used to prevent the pressure roller from sliding off the side plate.

[0015] Compared with the prior art, the present invention has at least the following advantages: This utility model discloses a sheet metal rolling machine. By setting toothed rings at both ends of the pressure roller, which cooperate with the first and second toothed racks in the sliding holes, when the pressure roller slides along the axial direction of the sleeve roller, the toothed rings can disengage from the first toothed rack and engage only with the second toothed rack. At this time, turning the handwheel can drive the toothed rings at both ends to roll synchronously along the second toothed rack, ensuring that the height adjustment at both ends of the pressure roller is consistent and ensuring uniform pushing force on the sheet metal workpiece. After adjustment, the pressure roller is slid in the opposite direction, and the toothed rings can re-engage and fix with the first toothed rack. In this way, the operation is simplified, synchronous adjustment is achieved, and the surface forming accuracy and processing quality of the sheet metal workpiece are greatly improved. It is also convenient and practical, and effectively solves the problem of inconsistent curvature caused by the need to alternately adjust the screws at both ends of the pressure roller in traditional devices. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of a sheet metal rolling machine according to a new embodiment of the present utility model; Figure 2 This is a partial structural schematic diagram of a sheet metal rolling machine according to a new embodiment of the present utility model. Figure 3 for Figure 2 A magnified schematic diagram of the structure of part A in the diagram; Figure 4 for Figure 2 A magnified schematic diagram of the partial structure of B in the diagram; Figure 5 for Figure 2Schematic diagram of the cross-sectional structure of the middle section; Figure 6 This is a schematic diagram of the structure in which the toothed ring meshes with the first toothed rack and the second toothed rack, respectively, according to a new embodiment of this utility model. Figure 7 This is a partial structural diagram of the roller according to a new embodiment of the present utility model.

[0018] Explanation of reference numerals in the attached figures: 1. Sheet metal rolling machine; 10. Frame; 100. Side plate; 101. Sliding hole; 1010. Sliding groove; 20. Sleeve roller; 200. Slide rail; 21. Pressure roller; 210. Clearance section; 22. Gear ring; 23. First rack; 24. Second rack; 25. Handwheel; 26. Outer roller; 27. Bearing roller; 28. Drive component; 29. ​​Connecting belt; 300. Drive wheel; 301. Driven wheel; 302. First gear; 303. Second gear; 40. Anti-detachment device; 50. Sheet metal workpiece. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0020] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0023] like Figures 1 to 7 As shown, in one embodiment, a sheet metal rolling machine 1 includes a frame 10 and an adjusting assembly. A side plate 100 is respectively provided on both ends of the frame 10, and a sliding hole 101 is provided on the side plate 100. The adjusting assembly includes a sleeve roller 20, a pressure roller 21, several toothed rings 22, several first toothed racks 23, and several second toothed racks 24. Both ends of the sleeve roller 20 are slidably disposed within each sliding hole 101. The pressure roller 21 passes through the sleeve roller 20, and both ends of the pressure roller 21 extend from both ends of the sleeve roller 20. The first toothed racks 23 and second toothed racks 24 are respectively disposed on two opposing inner sidewalls of the sliding holes 101, and each first toothed rack... The first racks 23 are located on the same inner wall of each sliding hole 101, and each first rack 23 is close to the side of each side plate 100 facing the same direction. Each toothed ring 22 is coaxially arranged at both ends of the pressure roller 21, and each toothed ring 22 meshes with the first rack 23 and the second rack 24, so that the first rack 23 and the second rack 24 jointly clamp the toothed ring 22. When the pressure roller 21 is subjected to external force and slides along the axial direction of the sleeve roller 20, the pressure roller 21 simultaneously drives each toothed ring 22 to disengage from each first rack 23, so that the pressure roller 21 drives each toothed ring 22 to roll synchronously along the setting direction of each second rack 24.

[0024] It should be noted that a side plate 100 is provided on each of the two opposite ends of the frame 10, and a sliding hole 101 is opened on each side plate 100 along the vertical direction, and the two sliding holes 101 are symmetrical to each other; further, the two ends of the sleeve roller 20 are slidably connected to the two sliding holes 101 respectively, so that the sleeve roller 20 can slide up and down along the opening direction of the sliding hole 101; further, the sleeve roller 20 is provided with a through hole, which passes through both ends of the sleeve roller 20; the pressure roller 21 is inserted into the through hole, and the two ends of the pressure roller 21 extend from the two ends of the sleeve roller 20 respectively to extend into the two sliding holes 101 respectively.

[0025] It should be noted that there are two first racks 23, each set on the inner wall of the same side of the two sliding holes 101, and both first racks 23 are close to the same side of the two side plates 100. For ease of description, when the frame 10 is placed on the bottom surface, the sliding hole 101 on the side plate 100 at the left end of the frame 10 is defined as the first sliding hole, and the sliding hole 101 on the side plate 100 at the right end of the frame 10 is defined as the second sliding hole. The two first racks 23 are respectively set on the inner wall of the same side of the two sliding holes 101. The first and second sliding holes are located on the inner sidewall of the frame 10 near the back, and the two first racks 23 are located at the right end of the first and second sliding holes near the right side of the frame 10, respectively; furthermore, two second racks 24 are also provided, and the two second racks 24 are located on the inner sidewall of the first and second sliding holes near the front of the frame 10, respectively; thus, the two first racks 23 are located on the same side of the two sliding holes 101, and the two second racks 24 are located on the opposite side of the two sliding holes 101.

[0026] It should be noted that the toothed ring 22 is an annular structure with teeth on its outer side wall. There are two toothed rings 22, which are respectively set on the two ends of the pressure roller 21 that extend relative to the two ends of the sleeve roller 20. Specifically, the pressure roller 21 has an annular part for installing the toothed ring 22. The toothed ring 22 is fitted onto the annular part, and the radial side of the toothed ring 22 has screw holes for screwing screws to fix the two toothed rings 22 to the two ends of the pressure roller 21. Furthermore, since both ends of the pressure roller 21 extend into the two sliding holes 101 respectively, the two toothed rings 22 can extend into the two sliding holes 101 respectively, and the opposing sides of the toothed rings 22 mesh with the first toothed rack 23 and the second toothed rack 24 respectively. Because the toothed ring 22 has a circular ring structure, while the first toothed rack 23 and the second toothed rack 24 are both strip structures, when the first toothed rack 23 and the second toothed rack 24 mesh with the opposing sides of the toothed ring 22 respectively, the toothed ring 22 cannot move along the first toothed rack 23 or along the second toothed rack 24. The first rack 23 and the second rack 24 slide together, causing the first rack 23 and the second rack 24 to clamp the toothed ring 22, thus keeping the toothed ring 22 in a fixed position. The first rack 23 and the second rack 24 are both arranged along the long axis of the sliding hole 101, so that the first rack 23 and the second rack 24 are both arranged vertically. When the first rack 23 and the second rack 24 in the two sliding holes 101 clamp the toothed ring 22 together, the toothed ring 22 cannot roll upward or downward, thus keeping the pressure roller 21 in a fixed position.

[0027] In one embodiment, the two first racks 23 are respectively located on the back side of the two sliding holes 101 near the frame 10 and on the right side of the frame 10. When the pressure roller 21 is subjected to external force and slides along the axial direction of the sleeve roller 20 towards the left side of the frame 10, the pressure roller 21 will drive the two toothed rings 22 to slide towards the end of the sliding hole 101 facing the left side of the frame 10. During this process, the side of the two toothed rings 22 near the front of the frame 10 will remain engaged with the two second racks 24 and slide towards the left side of the frame 10, while the side of the two toothed rings 22 near the back of the frame 10 will disengage from the first racks 23. At this time, the two toothed rings 22 are only engaged with the second racks 24. Thus, the pressure roller 21 can drive the two toothed rings 22 to roll synchronously upward or downward along the setting direction of the two second racks 24, so that the two ends of the pressure roller 21 can be adjusted synchronously to ensure the pushing force of the pressure roller 21 on the sheet metal workpiece 50. Furthermore, when the pressure roller 21 drives the two toothed rings 22 to roll along the two second racks 24 to the required processing position, the pressure roller 21 is then slid to the right side of the frame 10, causing the two toothed rings 22 to slide laterally towards the back of the frame 10 and engage with the two first racks 23 respectively. This causes the first racks 23 and second racks 24 in the two sliding holes 101 to jointly clamp the opposing sides of the two toothed rings 22, thus fixing the two toothed rings 22 in a fixed state where they cannot roll. This allows the operator to quickly and simultaneously adjust both ends of the pressure roller 21 from one side of the frame 10, improving the convenience of the adjustment operation, as well as the ease of operation, the workpiece surface forming accuracy, and the overall processing quality.

[0028] like Figures 5 to 6 As shown, in one embodiment, the width of the first rack 23 is smaller than the width of the second rack 24.

[0029] It should be noted that when the first rack 23 and the second rack 24 are disposed in the sliding hole 101 and the toothed ring 22 is disposed on the pressure roller 21, the orientation of each tooth on the first rack 23, the second rack 24 and the toothed ring 22 is consistent with the direction in which the pressure roller 21 slides on the sleeve roller 20 (i.e., it is arranged laterally relative to the frame 10), and each tooth on the first rack 23 and the second rack 24 is distributed vertically along the long axis of the sliding hole 101; so that when the toothed ring 22 is in the meshing state with the first rack 23 and the second rack 24, it can slide laterally along the axis of the sleeve roller 20.

[0030] It should be noted that, in one embodiment, the width of the first rack 23 is half the width of the second rack 24. Thus, when the toothed ring 22 approaches the left end of the frame 10, the side of the toothed ring 22 near the back of the frame 10 can disengage from the first rack 23. Since the width of the second rack 24 is greater than that of the first rack 23, the side of the toothed ring 22 near the back of the frame 10 will disengage from the first rack 23, while the side of the toothed ring 22 near the front of the frame 10 can remain engaged with the second rack 24. In this state, the toothed ring 22 can roll upward or downward along the direction set by the second rack 24. Furthermore, since the pressure roller 21 passes through the sleeve roller 20, and the sleeve roller 20 can only slide up and down along the long axis of the sliding hole 101, the two toothed rings 22 respectively drive the pressure roller 21 to roll upward or downward along the two second racks 24, while simultaneously driving the two ends of the sleeve roller 20 to slide within the two sliding holes 101.

[0031] like Figure 3 , Figure 6 As shown, in one embodiment, the thickness of the toothed ring 22 is the same as the width of the first toothed rack 23.

[0032] It should be noted that the axial thickness of the toothed ring 22 is consistent with the width of the first toothed rack 23, so that when the pressure roller 21 drives the toothed ring 22 to slide to the right side of the slide hole 101 near the frame 10, the toothed ring 22 can be in a saturated state of meshing with the first toothed rack 23 (that is, the length of the teeth on the toothed ring 22 is consistent with the length of the teeth on the first toothed rack 23, and the contact surfaces of the two teeth are in a state of complete contact), so as to increase the supporting force of the first toothed rack 23 on the toothed ring 22.

[0033] like Figure 6 As shown, in one embodiment, the pressure roller 21 is provided with a clearance portion 210, the diameter of which is smaller than the diameter of the toothed ring 22.

[0034] It should be noted that the clearance portion 210 is an annular groove structure. The diameter of the clearance portion 210 is smaller than the minimum diameter of the outer wall of the toothed ring 22 (the diameter at the groove position between each tooth), and the diameter of the clearance portion 210 is larger than the inner diameter of the toothed ring 22. Specifically, the diameter of the clearance portion 210 is larger than the inner diameter of the toothed ring 22, so that the toothed ring 22 cannot slide along the axial direction of the pressure roller 21. The diameter of the clearance portion 210 is smaller than the minimum diameter of the outer wall of the toothed ring 22, so that when the toothed ring 22 slides to the left of the frame 10 past the first rack 23, each tooth on the first rack 23 can be accommodated in the clearance portion 210, so as to avoid the teeth on the first rack 23 from abutting against the pressure roller 21, thus preventing the toothed ring 22 from disengaging from the first rack 23.

[0035] like Figures 1 to 2As shown, in one embodiment, the adjustment assembly further includes a handwheel 25, which is coaxially mounted on the pressure roller 21. The handwheel 25 is used to drive the pressure roller 21 to slide or rotate relative to the sleeve roller 20. It should be noted that one end of the pressure roller 21 extends from the other end of the side plate 100 through the sliding hole 101, and the handwheel 25 is coaxially mounted on the end of the pressure roller 21 that extends from the side plate 100. Thus, the operator can pull the pressure roller 21 using the handwheel 25 to engage or disengage the toothed ring 22 from the first rack 23. When the handwheel 25 disengages the pressure roller 21 from the first rack 23, rotating the handwheel 25 allows the pressure roller 21 to drive the toothed ring 22 to roll up or down along the second rack 24 to adjust the position of the pressure roller 21, thereby adjusting the pressure of the pressure roller 21 pressing the sheet metal workpiece 50 to adjust the curvature required for bending the sheet metal workpiece 50.

[0036] like Figure 4 As shown, in one embodiment, a groove 1010 is provided on the inner sidewall of the sliding hole 101, and a slide rail 200 is provided at the end of the sleeve roller 20, and the slide rail 200 is slidably engaged with the groove 1010.

[0037] It should be noted that each of the two sliding holes 101 has a groove 1010 on its inner sidewall facing each other at the end closest to each other, and the direction of the groove 1010 is consistent with the long axis direction of the sliding hole 101. It should also be noted that in one embodiment, one first rack 23 is located at the end of the sliding hole 101 closest to the groove 1010, and the other first rack 23 is located at the end of the sliding hole 101 away from the groove 1010. Furthermore, the roller 20 is a circular tubular structure with square end faces at both ends. The two opposite ends of the square structure on one end of the roller 20 are slidably engaged with the two opposite grooves 1010 in one sliding hole 101, and similarly, the two opposite ends of the square structure on the other end of the roller 20 are slidably engaged with the two opposite grooves 1010 in the other sliding hole 101. Because the roller 20 has square end faces, it cannot rotate when sliding along the long axis direction of the sliding hole 101.

[0038] like Figure 1 As shown, in one embodiment, the adjusting assembly further includes an outer roller 26, which is coaxially sleeved on the sleeve roller 20 and is used to abut against the sheet metal workpiece 50.

[0039] It should be noted that the outer roller 26 is a circular tubular structure, and its inner diameter is adapted to the outer diameter of the sleeve roller 20. The outer roller 26 is coaxially sleeved on the sleeve roller 20, so that the outer roller 26 can rotate around the axis of the sleeve roller 20, and the outer side wall of the outer roller 26 rolls against the sheet metal workpiece 50.

[0040] like Figures 1 to 2As shown, in one embodiment, the sheet metal rolling machine 1 further includes a plurality of bearing rollers 27, the two ends of each bearing roller 27 being rotatably connected to each side plate 100, and each bearing roller 27 and the outer roller 26 jointly extruding the sheet metal workpiece 50.

[0041] It should be noted that there are two bearing rollers 27, with their ends rotatably connected to the two side plates 100 respectively, and the two bearing rollers 27 are spaced apart and parallel to each other; while the pressure roller 21 is located above the middle of the two bearing rollers 27, and the long axis of the two sliding holes 101 is perpendicular to the middle position of the two bearing rollers 27, so that the pressure roller 21 rolls up or down to drive the outer side wall of the outer roller 26 to be tangent to the two bearing rollers 27 at the same time. When the sheet metal workpiece 50 passes between the two bearing rollers 27 and the outer roller 26, the pressure roller 21 can be rotated to roll down to drive the outer roller 26 and the two bearing rollers 27 to squeeze the sheet metal workpiece 50 together, causing it to bend.

[0042] like Figures 1 to 2 As shown, in one embodiment, the sheet metal rolling machine 1 further includes a drive component 28, a connecting belt 29, and several connecting wheels. Each connecting wheel is respectively disposed on the output shaft of the drive component 28 and on each bearing roller 27. The connecting belt 29 is sleeved on each connecting wheel so that the drive component 28 drives each bearing roller 27 to rotate.

[0043] It should be noted that the driving component 28 is a motor structure, which is located inside the frame 10 and below the two bearing rollers 27. In one embodiment, each connecting wheel includes a driving wheel 300, a driven wheel 301, a first gear 302, and two second gears 303. The driving wheel 300 is mounted on the drive shaft of the driving component 28, and the two second gears 303 are respectively mounted on the ends of the two bearing rollers 27 that extend from one side plate 100. The first gear 302 is rotatably mounted on the second gears 301. 03 On the same side plate 100, the first gear 302 is located between the two second gears 303, and the first gear 302 meshes with both second gears 303; the driven wheel 301 is coaxially arranged on the first gear 302 and rotates synchronously with the first gear 302; the connecting belt 29 is a belt structure, and the connecting belt 29 is respectively sleeved on the driving wheel 300 and the driven wheel 301, so that the driving member 28 can drive the two bearing rollers 27 to rotate synchronously in one direction through the connecting belt 29 and each connecting wheel. Thus, when a flat sheet metal workpiece 50 is placed on two support rollers 27, the operator manually pulls the handwheel 25 to disengage the pressure roller 21 from the two toothed rings 22 from the two first toothed racks 23. Then, the operator rotates the handwheel 25 to make the pressure roller 21 drive the two toothed rings 22 to roll downwards along the two second toothed racks 24. This causes the outer roller 26, which is sleeved on the sleeve roller 20, to slide downwards and, together with the two support rollers 27, press the sheet metal workpiece 50 into a bent state. When the sheet metal workpiece 50 is bent to the required bending degree, the operator manually pushes the handwheel 25 to make the pressure roller 21 drive the two toothed rings 22 to engage with the two first toothed racks 23 to lock the pressure roller 21. (During the switching between the engagement and disengagement of one side of the toothed ring 22 with the first toothed rack 23, the other side of the toothed ring 22 always remains engaged with the second toothed rack 24.) In this way, the bending degree of the sheet metal workpiece 50 is adjusted. Then the drive component 28 drives the two bearing rollers 27 to rotate in the same direction so that the sheet metal workpiece 50 gradually bends into a cylindrical shape.

[0044] like Figure 1 As shown, in one embodiment, the adjustment assembly further includes a plurality of anti-detachment shells 40, each anti-detachment shell 40 being disposed on each side plate 100, and each anti-detachment shell 40 being used to prevent the pressure roller 21 from sliding off the side plate 100.

[0045] It should be noted that there are two anti-detachment shells 40, which are respectively disposed on the side surfaces of the two side plates 100 that are far apart from each other; the two anti-detachment shells 40 are coaxially disposed on the two sliding holes 101 to prevent the pressure roller 21 from sliding out of one of the holes when sliding along the axial direction of the sleeve roller 20; furthermore, the first rack 23 and the second rack 24, which are symmetrically disposed in the sliding holes 101, have their teeth close to each other to ensure that they can simultaneously mesh with the toothed ring 22. At this time, the first rack 23 and the second rack 24 The spacing between the teeth on the pressure roller 21 is smaller than the diameter of the pressure roller 21, so that when the pressure roller 21 drives the toothed ring 22 to disengage from the first rack 23, the first rack 23 will be housed in the clearance portion 210. At this time, the side of the clearance portion 210 away from the toothed ring 22 (i.e. the diameter of the pressure roller 21) can simultaneously abut against the teeth on the first rack 23 and the second rack 24 to limit the sliding position of the pressure roller 21. Combined with the anti-detachment shell 40 provided on the side plate 100, the pressure roller 21 can be effectively prevented from sliding out of the sleeve roller 20.

[0046] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A sheet metal rolling machine, characterized in that, include: The frame has a side plate at each end, and the side plate has sliding holes; and An adjusting assembly includes a sleeve roller, a pressure roller, several toothed rings, several first toothed racks, and several second toothed racks. The two ends of the sleeve roller are slidably disposed within each of the sliding holes. The pressure roller passes through the sleeve roller, with its two ends extending from both ends of the sleeve roller. The first and second toothed racks are respectively disposed on two opposing inner sidewalls of the sliding holes, with each first toothed rack located on the same inner sidewall of each sliding hole and close to the side facing the same direction as each side plate. Each toothed ring is coaxially disposed at both ends of the pressure roller, and each toothed ring meshes with both the first and second toothed racks, so that the first and second toothed racks together clamp the toothed rings. When the pressure roller is subjected to external force and slides along the axial direction of the sleeve roller, the pressure roller simultaneously drives each toothed ring to disengage from each of the first toothed racks, so that the pressure roller drives each toothed ring to roll synchronously along the setting direction of each of the second toothed racks.

2. The sheet metal rolling machine according to claim 1, characterized in that, The width of the first rack is smaller than the width of the second rack.

3. The sheet metal rounding machine according to claim 2, characterized in that, The thickness of the toothed ring is the same as the width of the first toothed rack.

4. The sheet metal rounding machine according to claim 3, characterized in that, The pressure roller has a clearance section, the diameter of which is smaller than the diameter of the toothed ring.

5. The sheet metal rounding machine according to claim 4, characterized in that, The adjustment assembly also includes a handwheel, which is coaxially mounted on the pressure roller and is used to drive the pressure roller to slide or rotate relative to the sleeve roller.

6. The sheet metal rounding machine according to claim 5, characterized in that, A sliding groove is provided on the inner side wall of the sliding hole, and a sliding rail is provided at the end of the sleeve roller, and the sliding rail is slidably engaged with the sliding groove.

7. The sheet metal rounding machine according to claim 6, characterized in that, The adjusting assembly also includes an outer roller, which is coaxially sleeved on the sleeve roller and is used to abut against the sheet metal workpiece.

8. The sheet metal rounding machine according to claim 7, characterized in that, The sheet metal rolling machine also includes several bearing rollers, with each bearing roller having its two ends rotatably connected to each of the side plates. Each bearing roller and the outer roller together extrude the sheet metal workpiece.

9. The sheet metal rounding machine according to claim 8, characterized in that, The sheet metal rolling machine also includes a driving component, a connecting belt, and several connecting wheels. Each connecting wheel is respectively disposed on the output shaft of the driving component and on each of the bearing rollers. The connecting belt is sleeved on each of the connecting wheels so that the driving component drives each of the bearing rollers to rotate.

10. The sheet metal rounding machine according to claim 9, characterized in that, The adjustment assembly also includes a plurality of anti-detachment shells, each of which is disposed on each of the side plates and is used to prevent the pressure roller from sliding off the side plate.

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