A kind of pre-bending and curling device for processing metal liner of commercial dryer

Abstract

A kind of pre-bending and edge curling device for processing commercial dryer metal liner, it relates to metal bending processing technical field, including integrated electric control box, the upper surface of integrated electric control box is welded with square processing table, pre-bending assembly, edge curling assembly and edge pressing assembly are respectively arranged on square processing table;Positioning clamping assembly is further arranged on square processing table.The present application solves the problems in the prior art that the metal edge of commercial dryer metal liner is sharp during processing, which has safety hazards;Traditional manual or semi-automatic edge curling process is inefficient, unstable in quality, and poor in consistency;Pre-bending, edge curling, edge pressing and other multi-processes are dispersed, leading to complex production process, surface damage caused by multiple clamping and positioning of workpiece, and difficult to realize efficient automatic continuous production.

Description

Technical Field

[0001] This invention relates to the field of metal bending processing technology, specifically to a pre-bending and edge-rolling device for processing the metal inner liner of a commercial dryer. Background Technology

[0002] In the manufacturing process of metal inner liner for commercial dryers, the post-processing of its metal edges has always been a challenging aspect. Traditionally, after thin metal sheets are stamped into a semi-cylindrical inner liner, sharp burrs or flash are often left at the edges. If used directly, these sharp edges not only pose a risk of injuring operators, but also, due to stress concentration during long-term use, are prone to developing cracks at the edges, affecting the product's lifespan and safety.

[0003] Currently, the industry largely relies on manual or semi-automatic equipment for folding and curling to address such issues. Operators typically need to manually pre-bend the edges using simple tools, then complete the curling and pressing using different molds. This method is not only inefficient and unable to meet the demands of mass production, but more importantly, the processing quality is extremely inconsistent. Due to its heavy reliance on worker experience and technique, the consistency of the curling between different batches, and even within the same batch, is often poor, easily resulting in uneven curling, weak pressing, or excessive deformation.

[0004] Furthermore, since key processes such as pre-bending, edge rolling, and edge pressing are usually completed at dispersed workstations, workpieces need to be repeatedly clamped, positioned, and transferred. This not only increases the complexity of the production process and the workshop floor space, but also inevitably leads to scratches or bumps on the workpiece surface during repeated handling, increasing the scrap rate and making it difficult to achieve efficient automation of the entire production line.

[0005] Therefore, the industry urgently needs a specialized device that can integrate multiple functions and achieve automated continuous operation. This device needs to be able to accurately position inner liners of different specifications and sequentially complete a series of finishing processes such as pre-bending, edge rolling, and edge pressing on a single machine, thereby fundamentally improving processing efficiency, ensuring product quality stability, and reducing overall production costs. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a pre-bending and edge-rolling device for processing metal inner liner of commercial dryers. This device solves the problems of sharp metal edges posing safety hazards during the processing of metal inner liner of commercial dryers in traditional technologies; low efficiency, unstable quality, and poor consistency of traditional manual or semi-automatic edge-rolling processes; and complex production processes due to the dispersed nature of multiple processes such as pre-bending, edge-rolling, and edge-pressing, which can easily cause surface damage due to repeated clamping and positioning of workpieces, making it difficult to achieve efficient, automated, and continuous production.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A pre-bending and edge-rolling device for processing the metal inner liner of a commercial dryer includes an integrated electrical control box. A square processing table is welded to the upper surface of the integrated electrical control box. A pre-bending component, an edge-rolling component, and an edge-pressing component are respectively provided on the square processing table.

[0009] As an optimized solution, the pre-bending assembly includes a pre-bending mounting bracket, which is a U-shaped bracket with a horizontal opening, and the lower end of the pre-bending mounting bracket is fixed to the upper surface of the square processing table.

[0010] As an optimized solution, a positioning vertical plate is fixed on the transverse inner wall of the pre-bending mounting bracket, and a vertical sliding limit port is opened on the positioning vertical plate. A lifting clearance port is opened on the pre-bending mounting bracket directly opposite the sliding limit port, and a right-angle motor seat is mounted in the lifting clearance port.

[0011] As an optimized solution, a rolling drive motor is fixed on the transverse outer wall of the right-angle motor base, a square lifting seat is installed in the sliding limit port, the end of the square lifting seat passes through the sliding limit port and is fixed on the right-angle motor base, the end of the output shaft of the rolling drive motor passes through the right-angle motor base and the square lifting seat in sequence and is fixed with a pre-bent pressure roller, and a rolling cam is welded on the outer end face of the pre-bent pressure roller.

[0012] As an optimized solution, a transmission box is fixed on the transverse outer wall of the pre-bending mounting frame. A bevel gear transmission mechanism is provided inside the transmission box. A transmission motor is fixed on the lower surface of the transmission box. The transmission motor is connected to the bevel gear transmission mechanism for transmission. The bevel gear transmission mechanism is connected to a horizontal transmission shaft. A pre-bending support roller is fixed at the end of the transmission shaft.

[0013] As an optimized solution, the integrated electrical control box has two symmetrical maintenance doors hinged to its front. A rotary drive motor is fixed on the inner top surface of the integrated electrical control box. A circular connecting port is opened in the middle of the upper surface of the square processing table. The output shaft of the rotary drive motor passes upward through the circular connecting port and is fixed with a support turntable.

[0014] As an optimized solution, the square processing table is also provided with a positioning clamping assembly, which includes a clamping base. The clamping base is welded to the middle of the upper surface of the support turntable, and the upper surface of the clamping base is also provided with two symmetrical clearance slots.

[0015] As an optimized solution, a lower clamping frame is welded to the middle of the upper surface of the clamping base. The lower clamping frame is a U-shaped frame that extends longitudinally and faces downward. The two clearance slots are respectively located on the longitudinal sides of the lower clamping frame.

[0016] As an optimized solution, a horizontal longitudinal telescopic cylinder is fixed on each longitudinal outer wall of the lower clamping frame, and a longitudinal inner support plate is fixed at the telescopic end of each longitudinal telescopic cylinder, with the lower end of the longitudinal inner support plate extending into the clearance slot.

[0017] As an optimized solution, a vertical telescopic cylinder is fixed in the middle of the upper surface of the lower clamping frame, and an upper clamping frame is fixed at the upper telescopic end of the vertical telescopic cylinder. The upper clamping frame is a U-shaped frame that extends laterally and faces downward. A horizontal telescopic cylinder is fixed on each horizontal outer wall of the upper clamping frame, and a horizontal inner support plate is fixed at the telescopic end of each horizontal telescopic cylinder.

[0018] As an optimized solution, a top support telescopic cylinder is fixed in the middle of the upper surface of the upper clamping frame, and a horizontal top support positioning plate is fixed at the upper telescopic end of the top support telescopic cylinder.

[0019] As an optimized solution, two symmetrical hinged mounting seats are provided on the longitudinal sides of the support turntable. The lower end of the hinged mounting seat is welded to the upper surface of the square processing table. A side swing arm is hinged to the inner side of each hinged mounting seat. The side swing arm is an inverted L-shaped arm.

[0020] As an optimized solution, an adjustment positioning frame is slidably fitted between the two side swing arms. The adjustment positioning frame is a C-shaped frame with the opening facing downward. An adjustment motor is fixed on the inner top surface of each side swing arm. Each adjustment motor is connected to a vertical threaded rod. The lower end of the vertical threaded rod passes through and is threaded to the adjustment positioning frame.

[0021] As an optimized solution, a swing drive motor is fixed on the longitudinal outer wall of one of the hinged mounting bases, and the output shaft end of the swing drive motor passes through the hinged mounting base and is fixed to the side end face of the corresponding side swing arm.

[0022] As an optimized solution, a downward telescopic cylinder is rotatably provided on the inner top surface of the adjusting positioning frame, and a horizontal downward positioning plate is fixed to the lower telescopic end of the downward telescopic cylinder.

[0023] As an optimized solution, the upper surface of the square processing table is provided with a transverse sliding groove, which is located on the opposite side of the pre-bending mounting bracket. The edge-rolling assembly includes a transverse movement drive module, which is fixedly installed at one end of the transverse sliding groove. The transverse movement drive module is connected to a horizontal threaded rod, and the end of the horizontal threaded rod is rotatably supported on the transverse inner wall of the transverse sliding groove.

[0024] As an optimized solution, a square sliding base is also slidably mounted in the transverse sliding groove, the horizontal threaded rod passes through and is threadedly connected to the sliding base, and a rolled edge mounting bracket is fixed on the upper surface of the sliding base, the rolled edge mounting bracket being an I-shaped bracket.

[0025] As an optimized solution, a horizontal edge-rolling wheel is rotatably mounted on one side of the inner top surface of the edge-rolling mounting bracket, and an edge-rolling groove is provided in the middle section of the outer peripheral wall of the edge-rolling wheel.

[0026] As an optimized solution, the upper surface of the square processing table is also provided with two oblique sliding grooves, which are at a 90° angle to each other and are respectively located on both sides of the pre-bending mounting frame.

[0027] As an optimized solution, each of the inclined slide grooves is fixedly equipped with an electric slide rail, and a power supply module is fixedly installed in each of the inclined slide grooves corresponding to each electric slide rail.

[0028] As an optimized solution, the pressing assembly includes two electrically driven slides, which are respectively slidably mounted on two electric slide rails.

[0029] As an optimized solution, each of the electrically driven slides has a pressing mounting bracket fixed on its upper surface, and a horizontal pressing wheel is rotatably mounted on the inner top surface of each pressing mounting bracket. A pressing strip is welded to the middle of the outer peripheral wall of the pressing wheel.

[0030] As an optimized solution, a lifting telescopic cylinder is fixed on the inner top surface of the pre-bent mounting bracket, and the lower telescopic end of the lifting telescopic cylinder is fixed to the upper surface of the right-angle motor base.

[0031] As an optimized solution, a bottom support frame is welded to the lower surface of the integrated electrical control box, and the bottom support frame is grounded.

[0032] Compared with existing technologies, this device demonstrates several practical technical effects through integrated design and optimized workflow:

[0033] 1. First, the device adopts a positioning clamping assembly. Through the coordinated action of multiple cylinders in the longitudinal, transverse and vertical directions, it can quickly and accurately fix and center the metal inner liner, effectively avoiding displacement or deformation during processing and ensuring processing consistency.

[0034] The design of the pre-bending assembly, through the cooperation of the pre-bending support roller and the pre-bending pressure roller, first bends and rolls the edge of the metal inner liner outward, so as to pre-deform the material, reduce stress concentration during subsequent edge rolling, thereby improving edge rolling quality and reducing the risk of material cracking.

[0035] 2. Secondly, in the edge curling and pressing process, the edge curling assembly uses lateral feeding to make the edge curling wheel contact the edge of the metal inner liner, thereby turning the edge up, significantly reducing the edge sharpness and enhancing safety in use; the edge pressing assembly further presses the curled part to the vertical wall, forming a firm bending line, improving the overall structure and aesthetics.

[0036] The entire device is centrally controlled by an electrical control box, which is highly automated and reduces manual intervention. At the same time, the swing design of the positioning frame and the side swing arm provides flexibility, which can adapt to workpieces of different sizes and avoid other components during processing, thus improving the adaptability of the equipment.

[0037] 3. In addition, the equipment has a reasonable structural layout, and all components, such as the pre-bending mounting frame and the edge-rolling mounting frame, are securely installed to ensure the stability and efficiency of the processing.

[0038] By rotating the drive motor to rotate the metal inner liner, combined with the feed motion, continuous processing is achieved, which greatly improves production efficiency and is suitable for mass production of metal inner liners for commercial dryers.

[0039] Overall, this device not only solves the problems of low efficiency and poor consistency of traditional manual edge rolling, but also reduces equipment costs and floor space through multi-process integration, making it highly practical. Attached Figure Description

[0040] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0041] Figure 1 This is a schematic diagram of the overall external structure of each component in the present invention in the main viewing direction;

[0042] Figure 2 This is a schematic diagram of the overall external structure of each component in the present invention from a top-down perspective;

[0043] Figure 3 This is a schematic diagram of the overall external structure of the present invention from the left-side view direction;

[0044] Figure 4 This is a schematic diagram of the overall external structure of the present invention from the right-side view direction;

[0045] Figure 5 This is a schematic diagram of the isometric three-dimensional structure of the present invention.

[0046] Figure 6 This is a schematic diagram of the northeast isometric three-dimensional structure of the present invention;

[0047] Figure 7 For the present invention along Figure 2 A schematic diagram of the internal structure cut along line AA.

[0048] In the diagram: 1-Integrated electrical control box, 2-Bottom support frame, 3-Square processing table, 4-Inspection door, 5-Rotation drive motor, 6-Circular connection port, 7-Support turntable, 8-Clamping base, 9-Avoidance slot, 10-Lower clamping frame, 11-Longitudinal telescopic cylinder, 12-Longitudinal inner support plate, 13-Vertical telescopic cylinder, 14-Upper clamping frame, 15-Horizontal telescopic cylinder, 16-Horizontal inner support plate, 17-Top support telescopic cylinder, 18-Top support positioning plate, 19-Hinged mounting seat, 20-Side swing arm, 21-Adjustable positioning frame, 22-Adjustable distance motor, 23-Vertical threaded rod, 24-Swing drive motor, 25-Downward telescopic cylinder, 26-Downward positioning plate, 27-Pre- 28-Positioning vertical plate, 29-Sliding limit port, 30-Lifting clearance port, 31-Right angle motor base, 32-Rolling drive motor, 33-Square lifting seat, 34-Pre-bending lower pressure roller, 35-Lifting telescopic cylinder, 36-Transmission box, 37-Transmission motor, 38-Transmission shaft, 39-Pre-bending support roller, 40-Rolling cam, 41-Transverse slide groove, 42-Transverse drive module, 43-Horizontal threaded rod, 44-Sliding base, 45-Edge rolling mounting bracket, 46-Edge rolling wheel, 47-Edge rolling groove, 48-Angled slide groove, 49-Electric slide rail, 50-Power supply module, 51-Electric drive slide, 52-Edge pressing mounting bracket, 53-Edge pressing wheel, 54-Edge pressing belt. Detailed Implementation

[0049] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0050] like Figures 1 to 7As shown, a pre-bending and edge-rolling device for processing the metal inner liner of a commercial dryer includes an integrated electrical control box 1, which is a horizontally arranged square box. A bottom support frame 2 is welded to the lower surface of the integrated electrical control box 1 and is grounded. A square processing table 3 is welded to the upper surface of the integrated electrical control box 1. The square processing table 3 is respectively provided with a positioning clamping component, a pre-bending component, an edge-rolling component and an edge-pressing component.

[0051] The front of the integrated electrical control box 1 is hinged with two symmetrical maintenance doors 4. A rotary drive motor 5 is fixed on the inner top surface of the integrated electrical control box 1. A circular connecting port 6 is opened in the middle of the upper surface of the square processing table 3. The output shaft of the rotary drive motor 5 passes upward through the circular connecting port 6 and is fixed with a support turntable 7.

[0052] The positioning clamping assembly includes a clamping base 8, which is welded to the middle of the upper surface of the support turntable 7. The upper surface of the clamping base 8 also has two symmetrical clearance slots 9.

[0053] A lower clamping frame 10 is welded to the middle of the upper surface of the clamping base 8. The lower clamping frame 10 is a U-shaped frame that extends longitudinally and faces downward. Two clearance slots 9 are respectively located on the longitudinal sides of the lower clamping frame 10.

[0054] A horizontal longitudinal telescopic cylinder 11 is fixed on each longitudinal outer wall of the lower clamping frame 10. A longitudinal inner support plate 12 is fixed at the telescopic end of each longitudinal telescopic cylinder 11. The lower end of the longitudinal inner support plate 12 extends into the clearance slot 9.

[0055] A vertical telescopic cylinder 13 is fixed in the middle of the upper surface of the lower clamping frame 10. An upper clamping frame 14 is fixed at the upper telescopic end of the vertical telescopic cylinder 13. The upper clamping frame 14 is a U-shaped frame that extends laterally and has an opening facing downwards. A horizontal telescopic cylinder 15 is fixed on each horizontal outer wall of the upper clamping frame 14. A horizontal inner support clamping plate 16 is fixed at the telescopic end of each horizontal telescopic cylinder 15.

[0056] A top support telescopic cylinder 17 is fixed in the middle of the upper surface of the upper clamping frame 14, and a horizontal top support positioning plate 18 is fixed in the upper telescopic end of the top support telescopic cylinder 17.

[0057] Two symmetrical hinged mounting seats 19 are provided on the longitudinal sides of the support turntable 7. The lower end of the hinged mounting seat 19 is welded to the upper surface of the square processing table 3. A side swing arm 20 is hinged to the inner side of each hinged mounting seat 19. The side swing arm 20 is an inverted L-shaped arm.

[0058] An adjustment positioning frame 21 is slidably fitted between the two side swing arms 20. The adjustment positioning frame 21 is a C-shaped frame with the opening facing downward. An adjustment motor 22 is fixed on the inner top surface of each side swing arm 20. Each adjustment motor 22 is connected to a vertical threaded rod 23. The lower end of the vertical threaded rod 23 passes through and is threaded to the adjustment positioning frame 21.

[0059] A swing drive motor 24 is fixed on the longitudinal outer wall of one of the hinge mounting bases 19. The end of the output shaft of the swing drive motor 24 passes through the hinge mounting base 19 and is fixed to the side end face of the corresponding side swing arm 20.

[0060] A downward telescopic cylinder 25 is rotatably mounted on the inner top surface of the adjusting positioning frame 21, and a horizontal downward positioning plate 26 is fixed to the lower telescopic end of the downward telescopic cylinder 25.

[0061] The pre-bending assembly includes a pre-bending mounting bracket 27, which is a U-shaped bracket with a horizontal opening. The pre-bending mounting bracket 27 is located on one side of the supporting turntable 7 and its lower end is fixed to the upper surface of the square processing table 3.

[0062] A positioning vertical plate 28 is fixed on the transverse inner wall of the pre-bending mounting bracket 27. A vertically extending sliding limit port 29 is provided on the positioning vertical plate 28. A lifting clearance port 30 is provided on the transverse side wall of the pre-bending mounting bracket 27, directly opposite the sliding limit port 29.

[0063] A right-angle motor base 31 is installed inside the lifting clearance opening 30. A rolling drive motor 32 is fixed on the transverse outer wall of the right-angle motor base 31. A square lifting seat 33 is installed inside the sliding limit opening 29. The end of the square lifting seat 33 passes through the sliding limit opening 29 and is fixed on the right-angle motor base 31. The end of the output shaft of the rolling drive motor 32 passes through the right-angle motor base 31 and the square lifting seat 33 in sequence and is fixed with a pre-bent pressure roller 34.

[0064] A lifting telescopic cylinder 35 is fixed on the inner top surface of the pre-bent mounting bracket 27, and the lower telescopic end of the lifting telescopic cylinder 35 is fixed to the upper surface of the right-angle motor base 31.

[0065] A transmission box 36 is fixed on the transverse outer wall of the pre-bending mounting frame 27. A bevel gear transmission mechanism is provided inside the transmission box 36. A transmission motor 37 is fixed on the lower surface of the transmission box 36. The transmission motor 37 is connected to the bevel gear transmission mechanism for transmission. The bevel gear transmission mechanism is connected to a horizontal transmission shaft 38. A pre-bending support roller 39 is fixed at the end of the transmission shaft 38. The pre-bending support roller 39 is composed of two sections with different diameters, and the two sections of the pre-bending support roller 39 are connected by an arc transition.

[0066] A rolling cam 40 is welded to the outer end face of the pre-bending pressure roller 34, and the rolling cam 40 is set directly opposite the arc surface of the transition part of the pre-bending support roller 39.

[0067] The upper surface of the square processing table 3 is provided with a transverse slide groove 41. The transverse slide groove 41 is located on the opposite side of the pre-bending mounting bracket 27. The edge rolling assembly includes a transverse movement drive module 42. The transverse movement drive module 42 is fixedly installed at the end of the transverse slide groove 41. The transverse movement drive module 42 is connected to a horizontal threaded rod 43. The end of the horizontal threaded rod 43 is rotatably supported on the transverse inner wall of the transverse slide groove 41.

[0068] A square sliding base 44 is also slidably mounted in the transverse slide groove 41. A horizontal threaded rod 43 passes through and is threadedly connected to the sliding base 44. A rolled edge mounting bracket 45 is fixed on the upper surface of the sliding base 44. The rolled edge mounting bracket 45 is an I-shaped bracket.

[0069] A horizontal curling wheel 46 is rotatably mounted on one side of the inner top surface of the curling mounting bracket 45, and a curling groove 47 is provided in the middle section of the outer peripheral wall of the curling wheel 46.

[0070] The upper surface of the square processing table 3 is also provided with two oblique slides 48, which are at a 90° angle and are located on both sides of the pre-bending mounting frame 27.

[0071] Each inclined slide groove 48 is equipped with an electric slide rail 49, and a power supply module 50 is fixed in each electric slide rail 49.

[0072] The pressing assembly includes two electrically driven slide blocks 51, which are respectively slidably mounted on two electric slide rails 49.

[0073] Each electrically driven slide 51 has a pressing mounting bracket 52 fixed on its upper surface. Each pressing mounting bracket 52 has a horizontal pressing wheel 53 rotatably mounted on its inner top surface. A pressing strip 54 is welded to the middle of the outer peripheral wall of the pressing wheel 53.

[0074] When using this invention: First, start the swing drive motor 24 to drive the two side swing arms 20 to swing clockwise 90°, and place the metal inner liner (semi-cylindrical) of the dryer to be rolled onto the support turntable 7 with the opening facing down;

[0075] Control the vertical telescopic cylinder 13 to extend, drive the top support positioning plate 18 to move upward, lift the metal inner liner to a certain height, adjust the edge rolling processing position, and then control the horizontal telescopic cylinder 15 and the vertical telescopic cylinder 11 to extend respectively. Use the vertical inner support clamping plate 12 and the horizontal inner support clamping plate 16 to support and clamp the metal inner liner, so that the metal inner liner is centered.

[0076] Restart the swing drive motor 24 to control the two side swing arms 20 to swing back to the vertical position, and at the same time control the extension of the downward telescopic cylinder 25 to use the downward positioning plate 26 to vertically position the metal inner liner.

[0077] During the swing of the side swing arm 20, the position of the adjusting positioning frame 21 can be adjusted by starting the pitch motor 22 and driving the vertical threaded rod 23 to rotate, thereby avoiding other components;

[0078] After positioning, the metal inner liner is pre-bent: the top support telescopic cylinder 17 is shortened and the bottom pressure telescopic cylinder 25 is extended, driving the metal inner liner to move down as a whole, so that its lower edge abuts against the transition arc surface on the pre-bent support roller 39.

[0079] Start the drive motor 37, and drive the pre-bending support roller 39 to rotate around the axis through the bevel gear transmission mechanism and the transmission shaft 38;

[0080] Start the rotation drive motor 5, drive the support turntable 7 to rotate, thereby causing the metal inner liner in the clamp to rotate around the axis;

[0081] As the lower positioning plate 26 is pressed down, the metal inner liner is fed vertically, and under the action of the pre-bending support roller 39, the lower edge of the metal inner liner is bent outward.

[0082] Start the rolling drive motor 32, drive the pre-bending lower pressure roller 34 and the rolling cam 40 to rotate, control the lifting telescopic cylinder 35 to extend, drive the right angle motor base 31 to move down as a whole, so that the rotating rolling cam 40 abuts against the bent part of the metal inner liner and rolls it deeper.

[0083] The edges of the pre-bent metal liner are easier to deform later.

[0084] After the pre-bending process is completed, the edge rolling process is carried out: the transverse drive module 42 is started, which drives the horizontal threaded rod 43 to rotate and drives the sliding base 44 to move along the transverse slide groove 41, so that the edge rolling groove 47 on the edge rolling wheel 46 abuts against the horizontal edge of the metal liner. As the sliding base 44 continues to feed, under the action of pressure, the horizontal edge of the metal liner rolls up, thereby reducing the sharpness of its edge and reducing the risk of cutting hands during use.

[0085] After the edge rolling is completed, the edge pressing process is carried out: the two power supply modules 50 are started respectively, and the power supply modules 50 supply power to the electric slide rail 49, thereby driving the two electric drive slide blocks 51 to move along the inclined slide groove 48, so that they are fed towards the support turntable 7 until the edge pressing strip 54 on the edge pressing wheel 53 abuts against the rolled edge of the metal liner.

[0086] By controlling the electric drive slide 51 to continue feeding, the horizontal edge of the metal inner liner can be pressed onto the vertical outer wall again, and the pressed bending line is the deepening line rolled by the rolling cam 40 mentioned above.

[0087] After all processing is completed, the control side swing arm 20 and the adjustment positioning frame 21 are swung to one side, and at the same time the longitudinal inner support plate 12 and the transverse inner support plate 16 are released from the positioning clamps of the metal inner liner. Then the metal inner liner that has completed the bending and flanging process is removed as a whole.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A pre-bending and edge-rolling device for processing the metal inner liner of a commercial dryer, characterized in that: The device includes an integrated electrical control box, on the upper surface of which is welded a square processing table. The square processing table is respectively provided with a pre-bending component, an edge-rolling component, and an edge-pressing component. The pre-bending assembly includes a pre-bending mounting frame disposed on the square processing table. The pre-bending mounting frame is provided with a rotatable and liftable pre-bending lower pressure roller. A rolling cam is welded to the outer end face of the pre-bending lower pressure roller. The pre-bending mounting frame is also equipped with a rotatable pre-bending support roller. A support turntable is rotatably provided in the middle of the upper surface of the square processing table; The square processing table is also provided with a positioning clamping assembly. The positioning clamping assembly is located between the pre-bending assembly, the edge rolling assembly and the edge pressing assembly. The positioning clamping assembly includes a clamping base. The clamping base is welded to the middle of the upper surface of the support turntable. A lower clamping frame is welded to the middle of the upper surface of the clamping base. Each longitudinal outer wall of the lower clamping frame is provided with a longitudinal inner support clamping plate that can be extended and retracted. A vertical telescopic cylinder is fixed in the middle of the upper surface of the lower clamping frame, and an upper clamping frame is fixed at the upper telescopic end of the vertical telescopic cylinder. A transverse inner support clamping plate is telescopically provided on each transverse outer wall of the upper clamping frame, and a top support positioning plate is telescopically provided on the upper part of the upper clamping frame. The support turntable has two side swing arms swinging on its longitudinal sides respectively. An adjustment positioning frame is slidably and liftably fitted between the two side swing arms. A downward telescopic cylinder is rotatably provided on the inner top surface of the adjustment positioning frame. A horizontal downward positioning plate is fixed at the lower telescopic end of the downward telescopic cylinder. The pre-bending mounting frame is a U-shaped frame with a horizontal opening, and the lower end of the pre-bending mounting frame is fixed to the upper surface of the square processing table. A positioning vertical plate is fixed on the transverse inner wall of the pre-bending mounting frame. A vertical sliding limit opening is provided on the positioning vertical plate. A lifting clearance opening is provided on the pre-bending mounting frame directly opposite the sliding limit opening. A right-angle motor seat is mounted in the lifting clearance opening in a height-adjustable manner. A rolling drive motor is fixed on the transverse outer wall of the right-angle motor base. A square lifting seat is installed in the sliding limit port. The end of the square lifting seat passes through the sliding limit port and is fixed on the right-angle motor base. The end of the output shaft of the rolling drive motor passes through the right-angle motor base and the square lifting seat in sequence and is fixed with a pre-bent pressure roller. A transmission box is fixed on the transverse outer wall of the pre-bending mounting frame. A bevel gear transmission mechanism is provided inside the transmission box. A transmission motor is fixed on the lower surface of the transmission box. The transmission motor is connected to the bevel gear transmission mechanism for transmission. The bevel gear transmission mechanism is connected to a horizontal transmission shaft. A pre-bending support roller is fixed at the end of the transmission shaft. The integrated electrical control box has two symmetrical maintenance doors hinged to its front. A rotary drive motor is fixed on the inner top surface of the integrated electrical control box. A circular communication port is opened in the middle of the upper surface of the square processing table. The output shaft of the rotary drive motor passes upward through the circular communication port and is fixed to the center of the lower surface of the support turntable. The lower clamping frame is a U-shaped frame that extends longitudinally and faces downward. The upper surface of the clamping base is also provided with two symmetrical clearance slots. The two clearance slots are respectively located on the longitudinal sides of the lower clamping frame. The lower end of the longitudinal inner support clamping plate extends into the clearance slots. A horizontal longitudinal telescopic cylinder is fixed on each longitudinal outer wall of the lower clamping frame, and the telescopic end of each longitudinal telescopic cylinder is fixed to the inner side wall of the longitudinal inner support clamping plate. The upper clamping frame is a U-shaped frame that extends laterally and faces downward. A horizontal telescopic cylinder is fixed on each of the horizontal outer walls of the upper clamping frame. The telescopic end of each of the horizontal telescopic cylinders is fixed to the inner side wall of the horizontal inner support plate. The top support positioning plate is horizontally set, and a top support telescopic cylinder is fixed in the middle of the upper surface of the upper clamping frame. The upper telescopic end of the top support telescopic cylinder is fixed to the center of the lower surface of the top support positioning plate. The side swing arm is an inverted L-shaped arm. Two symmetrical hinge mounting seats are provided on the longitudinal sides of the support turntable. The lower end of the hinge mounting seat is welded to the upper surface of the square processing table. The side swing arm is hinged to the inner side of the hinge mounting seat. The adjusting positioning frame is a C-shaped frame with the opening facing downwards. Each of the side swing arms has an adjusting motor fixed on its inner top surface. Each adjusting motor is connected to a vertical threaded rod. The lower end of the vertical threaded rod passes through and is threaded to the adjusting positioning frame. One of the hinged mounting bases has a swing drive motor fixed to its longitudinal outer wall. The output shaft end of the swing drive motor passes through the hinged mounting base and is fixed to the side end face of the corresponding side swing arm.

2. The pre-bending and edge-rolling device for processing the metal inner liner of a commercial dryer according to claim 1, characterized in that: The upper surface of the square processing table is provided with a transverse sliding groove, which is located on the opposite side of the pre-bending mounting frame. The edge rolling assembly includes a transverse movement drive module, which is fixedly installed at one end of the transverse sliding groove. The transverse movement drive module is connected to a horizontal threaded rod, and the end of the horizontal threaded rod is rotatably supported on the transverse inner wall of the transverse sliding groove. A square sliding base is also slidably fitted inside the transverse sliding groove. The horizontal threaded rod passes through and is threadedly connected to the sliding base. A rolled edge mounting bracket is fixed on the upper surface of the sliding base. The rolled edge mounting bracket is an I-shaped bracket. A horizontal edge-rolling wheel is rotatably mounted on one side of the inner top surface of the edge-rolling mounting bracket, and an edge-rolling groove is provided in the middle section of the outer peripheral wall of the edge-rolling wheel.

3. The pre-bending and edge-rolling device for processing the metal inner liner of a commercial dryer according to claim 2, characterized in that: The upper surface of the square processing table is also provided with two oblique sliding grooves, which are at a 90° angle to each other and are located on the longitudinal sides of the pre-bent mounting frame. Each of the inclined slide grooves is equipped with an electric slide rail, and a power supply module is fixed in each of the inclined slide grooves corresponding to each electric slide rail. The pressing assembly includes two electrically driven slides, which are respectively slidably mounted on two electric slide rails. Each of the electrically driven slides has a pressing mounting bracket fixed on its upper surface. A horizontal pressing wheel is rotatably mounted on the inner top surface of each pressing mounting bracket. A pressing strip is welded to the middle of the outer peripheral wall of each pressing wheel.

4. The pre-bending and edge-rolling device for processing the metal inner liner of a commercial dryer according to claim 1, characterized in that: A lifting telescopic cylinder is fixed on the inner top surface of the pre-bent mounting bracket, and the lower telescopic end of the lifting telescopic cylinder is fixed to the upper surface of the right-angle motor base.

5. The pre-bending and edge-rolling device for processing the metal inner liner of a commercial dryer according to claim 1, characterized in that: The lower surface of the integrated electrical control box is welded with a bottom support frame, which is grounded.

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