A sill aluminum double-layer composite molding machine

Abstract

The present invention relates to a double-layer composite forming machine for sill aluminum materials, which comprises a base. A feeding roller group is arranged at the top of the base, and a shaping roller group for extruding an aluminum strip into a shape with an intermediate section, vertical edge sections and side edge sections is arranged at the rear side of the feeding roller group; A first flanging roller group for folding the side edge section of the aluminum strip towards the vertical edge section is arranged at the rear side of the shaping roller group, and a second flanging roller group for folding the side edge section of the aluminum strip until it fits with the vertical edge section is arranged at the rear side of the first flanging roller group; A first flanging roller group for folding the end of one side edge section towards the intermediate section is arranged at the rear side of the second flanging roller group, and a second flanging roller group for folding the end of the other side edge section towards the intermediate section is arranged at the rear side of the first flanging roller group; A forming roller group for pressing and forming the double-layer composite sill is arranged at the rear side of the second flanging roller group. The present invention can process and form the double-layer sill structure at one time, effectively reduce the springback effect of the aluminum strip, and improve the processing accuracy of the double-layer sill aluminum material structure.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic processing of metal materials, and in particular to a double-layer composite forming machine for sill aluminum materials. Background Art

[0002] A sill is a metal pedal or ridge structure used for support or separation in an elevator. Traditional elevator sill aluminum materials mostly adopt a single-layer structure, and the sill is prone to deformation due to insufficient strength. Gradually, double-layer structure sills have emerged on the market to meet the requirements of the sill structure strength.

[0003] Since there is currently a lack of a forming machine on the market that can process a double-layer sill structure in one step, when producing a double-layer sill structure, usually a single-layer sill aluminum material is first processed by a forming machine, and then the laminated sill aluminum materials are welded into a double-layer structure by manual labor. During the welding process, the aluminum materials need to be frequently turned over, resulting in problems such as low processing efficiency, easy bending and deformation of the aluminum materials, and reduced forming accuracy. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a double-layer composite forming machine for sill aluminum materials that can process a double-layer sill structure in one step.

[0005] A double-layer composite forming machine for sill aluminum materials includes a base. An upper feeding roller group for continuously conveying an aluminum strip is installed on the top of the base. A shaping roller group for extruding the aluminum strip into a symmetrical structure with a middle section, vertical edge sections, and side edge sections is provided at the rear of the upper feeding roller group;

[0006] A first edge folding roller group for pressing the side edge section of the aluminum strip towards the vertical edge section is provided at the rear of the shaping roller group. A second edge folding roller group for pressing the side edge section of the aluminum strip to fit with the vertical edge section is provided at the rear of the first edge folding roller group;

[0007] A first flanging roller group for folding the end of one side edge section towards the middle section is provided at the rear of the second edge folding roller group. A second flanging roller group for folding the end of the other side edge section towards the middle section is provided at the rear of the first flanging roller group;

[0008] A forming roller group for pressing the flanged side edge section to contact the surface of the middle section to form a double-layer composite structure is provided at the rear of the second flanging roller group.

[0009] By adopting the above technical solution, through the mutual cooperation of the upper feeding roller group, the shaping roller group, the first edge folding roller group, the second edge folding roller group, the first flanging roller group, the second flanging roller group, and the forming roller group, progressive bending processing can be carried out on the aluminum strip, and the double-layer sill structure can be processed in one step. While improving the processing efficiency, the springback effect of the aluminum strip can be effectively reduced, and the processing accuracy of the double-layer sill aluminum material structure can be improved.

[0010] The present invention is further configured such that: the loading roller set includes a loading roller symmetrically arranged up and down and a loading driving member for driving the two loading rollers to rotate in opposite directions, and the loading rollers are respectively in contact with the surface of the aluminum strip to continuously convey the aluminum strip to the shaping roller set.

[0011] By adopting the above technical solution, the two loading rollers are driven by the loading driving member to rotate in opposite directions, so that the aluminum strip can be continuously conveyed to facilitate the bending process of the aluminum strip.

[0012] The present invention is further configured such that: the shaping roller set includes an upper shaping roller and a lower shaping roller. A groove is provided in the middle of the circumferential side wall of the upper shaping roller, and a convex portion adapted to the groove is provided in the middle of the circumferential side wall of the lower shaping roller. The convex portion and the groove cooperate to arch the middle of the aluminum strip to form a symmetrical structure with a middle section, vertical side sections, and side sections.

[0013] By adopting the above technical solution, when the aluminum strip passes through the shaping roller set, the upper shaping roller and the lower shaping roller can continuously roll-press the aluminum strip, so that the convex portion and the groove cooperate to arch the middle of the aluminum strip upward, thereby processing the aluminum strip into a symmetrical structure with a middle section, vertical side sections, and side sections, and initially forming the inner sill aluminum material.

[0014] The present invention is further configured such that: the first flanging roller set includes an upper first flanging roller and a lower first flanging roller. A folding convex ridge is provided at the edge of the upper first flanging roller. An inner convex portion one and side convex portions one located on both sides of the inner convex portion one are provided on the circumferential side wall of the lower first flanging roller. A flanging groove adapted to the folding convex ridge is formed between the inner convex portion one and the side convex portions one. An inclined surface one is provided on the outer side of the folding convex ridge, and an inclined surface two is provided on the side convex portion one and close to the folding convex ridge. The inclined surface one and the inclined surface two cooperate to bend the side section of the aluminum strip toward the vertical side section.

[0015] By adopting the above technical solution, when the aluminum strip passes through the first flanging roller set, under the guidance of the flanging groove, the inclined surface one, and the inclined surface two, the side section of the aluminum strip can be bent toward the vertical side section, and the bottom of the vertical side section of the aluminum strip is attached to the side section.

[0016] The present invention is further configured such that: there are multiple groups of the first flanging roller set. The inclined surface angles of the inclined surface one and the inclined surface two on adjacent first flanging roller sets increase in a gradient, and accordingly, the included angle between the side section and the vertical side section gradually decreases.

[0017] By adopting the above technical solution, through multiple groups of the first flanging roller set with the inclined surface angles increasing in a gradient, the side section of the aluminum strip can be bent in a multi-stage progressive manner, so that the included angle between the side section and the vertical side section gradually decreases, thereby gradually releasing the elastic stress of the aluminum strip and reducing the springback effect of the aluminum strip during the shaping process.

[0018] The present invention is further configured as follows: The second hemming roller group includes an upper hemming roller two and a lower hemming roller two. A shaping convex rib for pressing and folding the vertical edge section of the aluminum strip to be perpendicular to the middle section is provided at the edge of the upper hemming roller two. An inner convex part two and side convex parts two located on both sides of the inner convex part two are provided on the lower hemming roller two. A vertical groove for pressing and folding the side edge section of the aluminum strip to partially fit with the vertical edge section is formed between the inner convex part two and the side convex parts two.

[0019] By adopting the above technical solution, when the aluminum strip is continuously conveyed to the second hemming roller group, through the mutual cooperation of the shaping convex rib and the inner convex part two, the vertical edge section and the middle section can be further shaped. Through the mutual cooperation of the inner convex part two and the side convex parts two, the side edge section of the aluminum strip can gradually fit with the vertical edge section in the vertical groove, making the vertical edge section and the middle section of the aluminum strip vertically distributed.

[0020] The present invention is further configured as follows: The first flanging roller group includes an inner supporting wheel one for supporting the middle section and the vertical edge section of the aluminum strip. A positioning wheel is provided on one side of the inner supporting wheel one, and a folding wheel one is provided on the other side of the inner supporting wheel one. A folding part one with a conical cross-sectional shape extends towards the inner supporting wheel one at the top of the folding wheel one. An inclined wheel one inclined towards one side of the folding wheel one is provided above the inner supporting wheel one. The inclined wheel one and the folding part one cooperate to gradually fold the end of one of the side edge sections towards the direction close to the middle section.

[0021] By adopting the above technical solution, when the aluminum strip is continuously conveyed to the first flanging roller group, one of the side edge sections of the aluminum strip can be folded through the cooperation of the folding wheel one and the inclined wheel one. During the folding process, the positioning wheel can position the unfolded side to prevent the aluminum strip from being distorted and deformed.

[0022] The present invention is further configured as follows: The second flanging roller group includes an inner supporting wheel two for supporting the middle section and the vertical edge section of the aluminum strip. A shaping wheel for fitting with the folded side edge section is provided on one side of the inner supporting wheel two, and a folding wheel two is provided on the other side of the inner supporting wheel two. A folding part two with a conical cross-sectional shape extends towards the inner supporting wheel two at the top of the folding wheel two. An inclined wheel two inclined towards one side of the folding wheel two is provided above the inner supporting wheel two. The inclined wheel two and the folding part two cooperate to gradually fold the end of the other side edge section towards the direction close to the middle section.

[0023] By adopting the above technical solution, when the aluminum strip is continuously conveyed to the second flanging roller group, the other side edge section can be folded through the cooperation of the folding wheel two and the inclined wheel two, and the aluminum strip can be further shaped during the flanging process, improving the forming effect after the aluminum strip is flanged.

[0024] The present invention is further configured as follows: The forming roller group includes a lower pressing roller for supporting the middle section and the vertical edge section of the aluminum strip. Side pressing rollers are provided on both sides of the lower pressing roller. The side pressing rollers cooperate with the lower pressing roller to compound the two sides of the sill into a double-layer structure. An upper pressing roller for rolling the end of the side edge section is provided on the top of the lower pressing roller. The upper pressing roller cooperates with the lower pressing roller to compound the top of the sill into a double-layer structure.

[0025] By adopting the above technical solution, the side pressing roller cooperates with the lower pressing roller to further shape the vertical edge section and the side edge section of the aluminum strip. The pressing roller and the lower pressing roller cooperate to press and bond the end of the side edge section and the middle section of the aluminum strip, thereby compounding the top of the sill into a double-layer structure.

[0026] The present invention is further configured as follows: It further includes a limiting roller group. The limiting roller group includes limiting rollers arranged on both sides of the aluminum strip. Limiting grooves for contacting the edge of the aluminum strip to limit the movement direction of the aluminum strip are provided on the limiting rollers.

[0027] By adopting the above technical solution, the limiting rollers can be used to limit on both sides of the aluminum strip through the limiting grooves, preventing the aluminum strip from shifting during the shaping process to ensure the shaping stability of the aluminum strip.

[0028] In summary, the beneficial technical effects of the present invention are as follows:

[0029] Through the cooperation of the feeding roller group, the shaping roller group, the first flanging roller group, the second flanging roller group, the first flanging roller group, the second flanging roller group and the forming roller group, the seven groups of rollers perform linkage processing on the aluminum strip, realizing the continuous and automatic processing of the aluminum strip from a single layer to a double-layer structure, and forming the double-layer sill aluminum structure at one time, improving the processing efficiency of the double-layer sill structure;

[0030] By performing multi-stage progressive bending on the aluminum strip and continuously shaping the aluminum strip, the elastic stress of the aluminum strip is gradually released, reducing the springback effect of the aluminum strip during the shaping process and improving the processing accuracy of the double-layer sill aluminum. Description of the Drawings

[0031] Figure 1 is the overall structural schematic diagram of the embodiment of the present application.

[0032] Figure 2 is the structural schematic diagram of the limiting roller group in the embodiment of the present application.

[0033] Figure 3 is the cross-sectional view of the shaping roller group in the embodiment of the present application.

[0034] Figure 4 is the schematic diagram of the aluminum strip after being shaped by the shaping roller group.

[0035] Figure 5 is the cross-sectional view of the first flanging roller group in the embodiment of the present application.

[0036] Figure 6 It is a schematic diagram of the aluminum strip after being bent by the first flanging roller set.

[0037] Figure 7 It is a cross-sectional view of the second flanging roller set in the embodiment of the present application.

[0038] Figure 8 It is a schematic diagram of the aluminum strip after being bent by the second flanging roller set.

[0039] Figure 9 It is a cross-sectional view of the first flanging roller set in the embodiment of the present application.

[0040] Figure 10 It is a schematic diagram of the aluminum strip after being folded by the first flanging roller set.

[0041] Figure 11 It is a cross-sectional view of the second flanging roller set in the embodiment of the present application.

[0042] Figure 12 It is a schematic diagram of the aluminum strip after being folded by the second flanging roller set.

[0043] Figure 13 It is a cross-sectional view of the forming roller set in the embodiment of the present application.

[0044] Figure 14 It is a schematic diagram of the aluminum strip after being pressed by the forming roller set.

[0045] In the figure, 1 is the base, 11 is the fixed frame, 12 is the upper mounting seat, 13 is the lower mounting seat, 14 is the threaded rod, 2 is the feeding roller set, 21 is the feeding roller, 3 is the shaping roller set, 31 is the upper shaping roller, 311 is the groove, 32 is the lower shaping roller, 321 is the protruding part, 4 is the first flanging roller set, 41 is the first upper flanging roller, 42 is the first lower flanging roller, 43 is the folding convex edge, 44 is the first inclined surface, 45 is the first inner convex part, 46 is the first side convex part, 47 is the flanging groove, 48 is the second inclined surface, 5 is the second flanging roller set, 51 is the second upper flanging roller, 52 is the second lower flanging roller, 53 is the shaping convex edge, 54 is the second inner convex part, 55 is the second side convex part, 56 is the vertical groove, 6 is the first flanging roller set, 61 is the first inner supporting wheel, 62 is the positioning wheel, 63 is the first folding wheel, 64 is the first folding part, 65 is the first inclined wheel, 7 is the second flanging roller set, 71 is the second inner supporting wheel, 72 is the shaping wheel, 73 is the second folding wheel, 74 is the second folding part, 75 is the second inclined wheel, 8 is the forming roller set, 81 is the lower pressing roller, 82 is the side pressing roller, 83 is the upper pressing roller, 9 is the limiting roller set, 91 is the limiting roller, 92 is the limiting groove, 93 is the limiting seat; 94 is the slider, 95 is the bidirectional lead screw, 10 is the middle section; 101 is the vertical edge section; 102 is the side edge section. Specific Embodiments

[0046] The following further describes the present application in detail with reference to the accompanying drawings.

[0047] Referring to Figures 1 - 14 , a double - layer composite forming machine for sill aluminum material disclosed by the present invention includes a base 1. At the top of the base 1 and near the front - side edge, a loading roller group 2 for continuously conveying an aluminum strip is fixed by bolts. Behind the loading roller group 2, there is a shaping roller group 3 for extruding the aluminum strip into a symmetrical structure with a middle section 10, vertical edge sections 101, and side - edge sections 102. Behind the shaping roller group 3, there is a first flanging roller group 4 for folding the side - edge section 102 of the aluminum strip towards the vertical edge section 101. Behind the first flanging roller group 4, there is a second flanging roller group 5 for folding the side - edge section 102 of the aluminum strip until it fits against the vertical edge section 101. Behind the second flanging roller group 5, there is a first edge - turning roller group 6 for turning the end of one side - edge section 102 towards the middle section 10 and folding it. Behind the first edge - turning roller group 6, there is a second edge - turning roller group 7 for turning the end of the other side - edge section 102 towards the middle section 10 and folding it. Behind the second edge - turning roller group 7, there is a forming roller group 8 for pressing the turned - over side - edge section 102 into contact with the surface of the middle section 10 to form a double - layer composite sill.

[0048] Referring to Figure 1 , in the specific implementation process, a plurality of uniformly distributed fixed frames 11 are successively welded and fixed to the top of the base 1. At the inner side of the fixed frame 11 and near the bottom end, a lower mounting seat 13 is fixed by bolts. Above the lower mounting seat 13, there is an upper mounting seat 12 slidably connected to the fixed frame 11. On both sides of the upper mounting seat 12 on the fixed frame 11, threaded rods 14 are rotatably installed. The threaded rods 14 pass through the upper mounting seat 12 and are threadedly connected to the upper mounting seat 12. When the threaded rods 14 are rotated, the threaded rods 14 move relative to the upper mounting seat 12, and can drive the upper mounting seat 12 to slide on the fixed frame 11 to adjust the distance between the upper mounting seat 12 and the lower mounting seat 13.

[0049] The loading roller group 2, the shaping roller group 3, the first flanging roller group 4, the second flanging roller group 5, the first edge - turning roller group 6, the second edge - turning roller group 7, and the forming roller group 8 are successively installed in the fixed frames 11 at corresponding positions from front to back. During the continuous conveyance of the aluminum strip by the loading roller group 2, through the shaping roller group 3, the first flanging roller group 4, the second flanging roller group 5, the first edge - turning roller group 6, the second edge - turning roller group 7, and the forming roller group 8, the aluminum strip can be gradually bent and shaped to process and form a sill with a double - layer composite structure.

[0050] The loading roller set 2 is installed inside the fixed frame 11 at the frontmost side. The loading roller set 2 includes loading rollers 21 that are symmetrically arranged up and down. The loading roller 21 at the top of the aluminum strip is rotatably installed on the upper mounting seat 12 inside the fixed frame 11, and the loading roller 21 at the bottom of the aluminum strip is rotatably installed on the lower mounting seat 13 inside the fixed frame 11. Moreover, the two loading rollers 21 are respectively in contact with the upper and lower surfaces of the aluminum strip. A loading driving member for driving the operation of the loading roller set 2 is also installed on the fixed frame 11. The loading driving member can adopt two motors that independently drive the rotation of the loading rollers 21, or a motor and gears are used in cooperation to drive the two loading rollers 21 to rotate in opposite directions. Since both the driving member of the loading roller set 2 and the motors of the loading roller set 2 are prior arts and will not be elaborated in detail in this application, it is only necessary to make the loading driving member drive the two loading rollers 21 to rotate in opposite directions, so as to continuously convey the aluminum strip to one side of the shaping roller set 3.

[0051] Since the loading roller set 2, the shaping roller set 3, the first flanging roller set 4, the second flanging roller set 5, the first flanging roller set 6, the second flanging roller set 7, and the forming roller set 8 are all installed in the corresponding fixed frames 11 in sequence from front to back in the same manner, and the fixed frame 11, the upper mounting seat 12, and the lower mounting seat 13 all adopt a unified standard structural design, the installation of the shaping roller set 3, the first flanging roller set 4, the second flanging roller set 5, the first flanging roller set 6, the second flanging roller set 7, and the forming roller set 8 will not be elaborated.

[0052] Refer to Figure 1 and Figure 2 In the specific implementation process, in order to improve the stability of the aluminum strip during the shaping process, limiting roller sets 9 are provided between the loading roller set 2 and the shaping roller set 3, between the shaping roller set 3 and the first flanging roller set 4, between the first flanging roller set 4 and the second flanging roller set 5, between the second flanging roller set 5 and the first flanging roller set 6, between the first flanging roller set 6 and the second flanging roller set 7, and between the second flanging roller set 7 and the forming roller set 8. The limiting roller set 9 includes limiting rollers 91 arranged on both sides of the aluminum strip and a limiting seat 93 for adjusting the distance between the limiting rollers 91. Inside the limiting seat 93, there are two groups of sliders 94 that slide along the limiting seat 93 and a sliding groove for restricting the linear sliding of the sliders 94. The limiting roller 91 is rotatably connected to the slider 94 through a rotating shaft. A bidirectional lead screw 95 is rotatably connected to the limiting seat 93. The bidirectional lead screw 95 has symmetrically distributed thread segments with opposite thread directions. The thread segments on the bidirectional lead screw 95 are respectively threadedly connected to the sliders 94 on both sides. When the bidirectional lead screw 95 is rotated, it drives the two groups of sliders 94 to slide relative to the limiting seat 93 to adjust the distance between the two groups of limiting rollers 91. A V-shaped limiting groove 92 is provided on the circumferential outer wall of the limiting roller 91. The width and depth of the limiting groove 92 can be customized according to the edge shape of the aluminum strip in different processing stages, so that the limiting groove 92 is in contact with the two side edges of the aluminum strip to restrict the movement direction of the aluminum strip and prevent the aluminum strip from shifting during the shaping process, so as to ensure the shaping stability of the aluminum strip.

[0053] Refer to Figure 3 and Figure 4 Figure 4

[0054] The shaping roller set 3 further includes a motor assembly for driving the upper shaping roller 31 and the lower shaping roller 32 to rotate in opposite directions. Since the motor assembly is a prior art and will not be elaborated here, it only needs to satisfy driving the upper shaping roller 31 and the lower shaping roller 32 to rotate in opposite directions. While continuously conveying the aluminum strip to the first flanging roller set 4, the aluminum strip is extruded and shaped by the cooperation of the protrusion 321 and the groove 311.

[0055] Refer to Figure 5 and Figure 6 Figure 6

[0056] The first hemming roller set 4 further includes a motor assembly mounted on the fixed frame 11 to drive the first upper hemming roller 41 and the first lower hemming roller 42 to rotate in opposite directions. Since the motor assembly is a prior art and will not be elaborated here, it only needs to meet the requirement of driving the first upper hemming roller 41 and the first lower hemming roller 42 to rotate in opposite directions, so that the first hemming roller set 4 continuously conveys the aluminum strip to one side of the second hemming roller set 5. During the conveying process, through the mutual cooperation of the folding convex rib 43, the first inner convex part 45 and the first side convex part 46, the aluminum strip is bent and deformed under the guidance of the hemming groove 47, the first inclined surface 44 and the second inclined surface 48.

[0057] The aluminum strip preliminarily shaped by the shaping roller set 3 is continuously conveyed to the first hemming roller set 4. Through the cooperation of the first inner convex part 45 and the folding convex rib 43, the vertical side section 101 and the middle section 10 of the aluminum strip can be further bent, so that the vertical side section 101 of the aluminum strip is perpendicular to the middle section 10. Through the cooperation of the first side convex part 46 and the folding convex rib 43, and making the first inclined surface 44 guide on the inner side surface of the aluminum strip and the second inclined surface 48 guide on the outer surface of the aluminum strip, the side section 102 of the aluminum strip gradually bends towards the vertical side section 101 inside the hemming groove 47, and the bottom of the vertical side section 101 of the aluminum strip is attached to the side section 102.

[0058] In the further implementation process, there are multiple sets of the first hemming roller set 4, and the inclined surface angles of the first inclined surface 44 and the second inclined surface 48 on adjacent first hemming roller sets 4 increase in a gradient. Since each set of the first hemming roller set 4 has the same structure, the only difference is the inclined surface angles of the first inclined surface 44 and the second inclined surface 48, so the multiple sets of the first hemming roller set 4 will not be elaborated here. The multiple sets of the first hemming roller set 4 gradually press and fold the side section 102 of the aluminum strip, so that the included angle between the side section 102 and the vertical side section 101 gradually decreases. During the process of bending the side section 102 of the aluminum strip towards the vertical side section 101, the side section 102 of the aluminum strip can be bent in a multi-stage progressive manner, and the included angle α1 between the side section 102 and the vertical side section 101 gradually decreases. Among them, the included angle after the preliminary bending is 60°, the included angle after the second bending is 45°, and the finally formed included angle α2 is 20°. Thus, the elastic stress of the aluminum strip is gradually released, preventing the side part of the aluminum strip from rebounding during the processing and improving the shaping effect of the aluminum strip.

[0059] Refer to Figure 7 and Figure 8, the second hemming roller set 5 includes an upper second hemming roller 51 and a lower second hemming roller 52. The upper second hemming roller 51 is rotatably installed inside the corresponding upper mounting seat 12, and the lower second hemming roller 52 is rotatably installed inside the corresponding lower mounting seat 13. When the threaded rod 14 is rotated to drive the upper mounting seat 12 to move, the distance between the upper second hemming roller 51 and the lower second hemming roller 52 can be adjusted. A shaping convex rib 53 is provided at the edge of the upper second hemming roller 51 to press and fold the vertical edge section 101 of the aluminum strip to be perpendicular to the middle section 10. An inner convex part two 54 and side convex parts two 55 located on both sides of the inner convex part two 54 are provided on the lower second hemming roller 52. A vertical groove 56 is formed between the inner convex part two 54 and the side convex parts two 55 to press and fold the side edge section 102 of the aluminum strip to be attached to the vertical edge section 101.

[0060] The second hemming roller set 5 further includes a motor assembly for driving the upper second hemming roller 51 and the lower second hemming roller 52 to rotate. Since the motor assembly is a prior art and will not be elaborated here, it only needs to satisfy driving the upper second hemming roller 51 and the lower second hemming roller 52 to rotate in opposite directions, so as to further convey the aluminum strip after being bent by the first hemming roller set 4 backward, and through the mutual cooperation of the shaping convex rib 53 and the inner convex part two 54, further shape the vertical edge section 101 and the middle section 10. At the same time, under the restriction of the upper second hemming roller 51, the inner convex part two 54 and the side convex parts two 55 cooperate with each other to further shape the aluminum strip after being bent by the first hemming roller set 4. Through the vertical groove 56, the side edge section 102 of the aluminum strip gradually adheres to the vertical edge section 101, so that the vertical edge section 101 of the aluminum strip is vertically distributed with the middle section 10.

[0061] Refer to Figure 9 and Figure 10 , the first flanging roller set 6 includes an inner supporting wheel one 61 for supporting the middle section 10 and the vertical edge section 101 of the aluminum strip. The inner supporting wheel one 61 is rotatably installed on the lower mounting seat 13 at the corresponding position. A positioning wheel 62 is provided on one side of the inner supporting wheel one 61, and a first folding wheel 63 is provided on the other side of the inner supporting wheel one 61. The positioning wheel 62 and the inner supporting wheel one 61 are both rotatably installed on the lower mounting seat 13 and are vertically distributed with the inner supporting wheel one 61. The top of the first folding wheel 63 is a tapered structure with a wider upper part and a narrower lower part. A first folding part 64 with a tapered cross-sectional shape extends towards the direction of the inner supporting wheel one 61 at the top of the first folding wheel 63. An inclined wheel one 65 is rotatably installed on the upper mounting seat 12, and the included angle between the inclined wheel one 65 and the inner supporting wheel one 61 is 45°. The inclined wheel one 65 cooperates with the first folding part 64 to fold the end of one side of the side edge section 102 towards the middle section 10, so that an included angle β1 of 45° is formed between the side edge section 102 and the middle section 10 of the aluminum strip. During the folding process, the positioning wheel 62 positions the non-folded side to prevent the aluminum strip from being distorted and deformed.

[0062] The first flanging roller set 6 further includes a motor assembly installed on the fixed frame 11 to drive the positioning wheel 62 and the first folding wheel 63 to rotate in opposite directions. Since the motor assembly is a prior art and will not be elaborated here, it only needs to satisfy driving the positioning wheel 62 and the first folding wheel 63 to rotate in opposite directions. When the motor assembly operates, it can drive the positioning wheel 62 and the first folding wheel 63 to rotate in opposite directions, continuously conveying the aluminum strip after being bent and shaped by the second flanging roller set 5 to the second flanging roller set 7. At the same time, the first folding wheel 63, through the top-wide and bottom-narrow conical structure, cooperates with the first inclined wheel 65 to fold the side section 102 of the aluminum strip towards the middle section 10. And during the folding process, the first inclined wheel 65 can support and limit on the other side of the aluminum strip to avoid improving the shaping stability of the aluminum strip.

[0063] Refer to Figure 11 and Figure 12 , the second flanging roller set 7 includes an inner support wheel two 71 for supporting the middle section 10 and the vertical side section 101 of the aluminum strip. The inner support wheel two 71 is rotatably installed on the lower mounting seat 13 at the corresponding position. One side of the inner support wheel two 71 is provided with a shaping wheel 72 that fits with the folded side section 102 to shape the folded aluminum strip and avoid the side section 102 of the aluminum strip rebounding after being folded by the first flanging roller set 6. The other side of the inner support wheel two 71 is provided with a second folding wheel 73. The top of the second folding wheel 73 extends towards the direction of the inner support wheel two 71 to form a folding part two 74 with a conical cross-section. Both the shaping wheel 72 and the second folding wheel 73 are rotatably installed on the lower mounting seat 13 and are perpendicularly distributed to the inner support wheel two 71. Above the inner support wheel two 71 is provided with a second inclined wheel 75 that inclines towards one side of the second folding wheel 73. The second inclined wheel 75 is rotatably installed on the upper mounting seat 12 and forms an angle of 45° with the inner support wheel two 71. The second inclined wheel 75 cooperates with the folding part two 74 to fold the end of the side section 102 on the other side towards the middle section 10, so that the end of the side section 102 on the other side of the aluminum strip forms an angle β2 of 45° with the middle section 10.

[0064] The second flanging roller set 7 further includes a motor assembly installed on the fixed frame 11 to drive the shaping wheel 72 and the second folding wheel 73 to rotate in opposite directions. Since the motor assembly is a prior art and will not be elaborated here, it only needs to satisfy driving the shaping wheel 72 and the second folding wheel 73 to rotate in opposite directions. When the motor assembly operates, it can drive the shaping wheel 72 and the second folding wheel 73 to rotate in opposite directions. While continuously conveying the aluminum strip to the forming roller set 8, it folds the end of the side section 102 on the other side towards the middle section 10. Through the first flanging roller set 6 and the second flanging roller set 7, the side section 102 of the aluminum strip can be gradually flanged, so that the side section 102 of the aluminum strip forms an angle β with the middle section 10, and further shape the aluminum strip during the flanging process, improve the forming effect after the aluminum strip is flanged, and effectively avoid the end of the side section 102 of the aluminum strip from deforming or rebounding.

[0065] Refer to Figure 13 andFigure 14 The forming roller set 8 includes a lower pressing roller 81 that supports the middle section 10 and the vertical edge section 101 of the aluminum strip. Side pressing rollers 82 are provided on both sides of the lower pressing roller 81. The lower pressing roller 81 and the side pressing rollers 82 are respectively rotatably installed on the lower mounting seats 13 at corresponding positions, and the side pressing rollers 82 are vertically distributed with respect to the lower pressing roller 81. The side pressing rollers 82 cooperate with the lower pressing roller 81 to further plastically process the vertical edge section 101 and the side edge section 102 of the aluminum strip, thereby compounding the two sides of the door sill into a double-layer structure. An upper pressing roller 83 for rolling the end of the side edge section 102 is provided on the top of the lower pressing roller 81. The upper pressing roller 83 and the lower pressing roller 81 cooperate to press the end of the side edge section 102 of the aluminum strip against the middle section 10, thereby compounding the top of the door sill into a double-layer structure.

[0066] The forming roller set 8 further includes a motor assembly installed on the fixed frame 11 to drive the lower pressing roller 81 and the upper pressing roller 83 to rotate in opposite directions. Since the motor assembly is a prior art and will not be elaborated here, it only needs to satisfy driving the lower pressing roller 81 and the upper pressing roller 83 to rotate in opposite directions. When the motor assembly operates, it can drive the lower pressing roller 81 and the upper pressing roller 83 to rotate in opposite directions and continuously convey the aluminum strip backward. During the conveying process, through the cooperation of the upper pressing roller 83 and the lower pressing roller 81, the end of the side edge section 102 and the middle section 10 of the aluminum strip are further roll-pressed, thereby processing the aluminum strip into a double-layer composite structure.

[0067] In a further implementation process, in order to improve the composite forming effect of the door sill aluminum material and avoid deformation of the side edge section 102 of the aluminum strip, a plurality of transition roller sets are provided between the second flanging roller set 7 and the forming roller set 8 to perform multi-stage pressing and folding on the end of the flanged side edge section 102 toward the middle section 10, so that the included angle between the end of the side edge section 102 and the middle section 10 gradually decreases. Among them, the included angle after the initial pressing and folding is 45°, the included angle after the second pressing and folding is 30°, and the included angle after the third bending is 15°. Thereby, the shaping effect of the forming roller set 8 on the aluminum strip after two flangings is improved, and deformation of the side edge section 102 caused by direct pressing and folding by the forming roller set 8 is avoided.

[0068] In a further implementation process, in order to meet the texture requirements or shape requirements of the door sill aluminum material, multiple forming modules can be provided to further shape the aluminum strip compounded into a double-layer structure, so that the required texture of the door sill aluminum material is formed synchronously, thereby improving the processing efficiency of the door sill aluminum material.

[0069] In a further implementation process, a polishing roller set is provided at the rear of the forming roller set 8. The polishing roller set includes an upper polishing roller and a lower polishing roller. The upper polishing roller is rotatably installed inside the upper mounting seat 12, and the lower polishing roller is installed inside the lower mounting seat 13. Moreover, the upper polishing roller and the lower polishing roller are respectively controlled by independent motors. After the door sill aluminum material is compounded into a double-layer structure, the surface of the door sill aluminum material can be polished by the upper polishing roller and the lower polishing roller to improve the surface effect of the aluminum strip.

[0070] The implementation principle of this embodiment is as follows: First, control multiple motor components to operate synchronously, driving the feeding roller group 2, the shaping roller group 3, the first flanging roller group 4, the second flanging roller group 5, the first flanging-over roller group 6, the second flanging-over roller group 7, and the forming roller group 8 to operate simultaneously, so as to continuously convey the aluminum strip from front to back at a stable speed. When the aluminum strip passes through the shaping roller group 3, the upper shaping roller 31 and the lower shaping roller 32 continuously roll-press the aluminum strip, and the middle part of the aluminum strip is arched upward through the cooperation of the convex part 321 and the groove 311, so that the aluminum strip forms a symmetrical structure with a middle section 10, a vertical side section 101, and a side section 102.

[0071] When the aluminum strip passes through multiple groups of the first flanging roller group 4 in sequence, the upper first flanging roller 41 and the lower first flanging roller 42 continuously roll-press the aluminum strip, and under the guidance of the flanging groove 47, the first inclined surface 44, and the second inclined surface 48, the side section 102 of the aluminum strip is bent towards the vertical side section 101. By using multiple groups of the first flanging roller group 4 to perform three-level bending on the aluminum strip, the included angle α1 between the side section 102 and the vertical side section 101 is gradually reduced.

[0072] When the aluminum strip passes through the second flanging roller group 5, the upper second flanging roller 51 and the lower second flanging roller 52 continuously roll-press the aluminum strip, and the aluminum strip is further pressed and folded through the mutual cooperation of the shaping convex rib 53, the second inner convex part 54, and the second side convex part 55, so that the side section 102 of the aluminum strip fits with the vertical side section 101 in the vertical groove 56, and the vertical side section 101 of the aluminum strip is vertically distributed with respect to the middle section 10.

[0073] When the aluminum strip passes through the first flanging-over roller group 6, the aluminum strip is continuously conveyed backward through the cooperation of the positioning wheel 62 and the first flanging-over wheel 63, and during the conveying process, the first inclined wheel 65 cooperates with the first flanging-over wheel 63 to fold one side of the side section 102 of the aluminum strip towards the middle section 10.

[0074] When the aluminum strip passes through the second flanging-over roller group 7, the aluminum strip is continuously conveyed backward through the cooperation of the shaping wheel 72 and the second flanging-over wheel 73, and during the conveying process, the second inclined wheel 75 cooperates with the second flanging-over wheel 73 to fold the other side of the side section 102 towards the middle section 10. After being folded by the first flanging-over roller group 6 and the second flanging-over roller group 7, the end of the side section 102 of the aluminum strip forms a 45° angle with the middle section 10.

[0075] When the aluminum strip passes through the forming roller group 8, the upper pressing roller 83 and the lower pressing roller 81 continuously roll-press the aluminum strip, and the end of the side section 102 of the aluminum strip is pressed and combined with the middle section 10, thereby forming a double-layer composite sill aluminum profile structure.

[0076] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A double-layer composite forming machine for sill aluminum materials, comprising a base (1), wherein a feeding roller group (2) for continuously conveying aluminum strips is installed on the top of the base (1), and it is characterized in that: Behind the feeding roller group (2), there is a shaping roller group (3) that extrudes the aluminum strip into a symmetrical structure with a middle section (10), vertical edge sections (101), and side edge sections (102). Behind the shaping roller group (3), there is a first hemming roller group (4) that folds the side edge section (102) of the aluminum strip towards the vertical edge section (101). Behind the first hemming roller group (4), there is a second hemming roller group (5) that folds the side edge section (102) of the aluminum strip until it fits against the vertical edge section (101). Behind the second hemming roller group (5), there is a first flanging roller group (6) that turns the end of one side edge section (102) towards the middle section (10) and folds it. Behind the first flanging roller group (6), there is a second flanging roller group (7) that turns the end of the other side edge section (102) towards the middle section (10) and folds it. Behind the second flanging roller group (7), there is a forming roller group (8) that presses the flanged side edge section (102) into contact with the surface of the middle section (10) to form a double-layer composite structure.

2. The sill aluminum alloy double-layer composite forming machine according to claim 1, wherein: The feeding roller group (2) includes upper and lower symmetric feeding rollers (21) and a feeding driving member that drives the two groups of feeding rollers (21) to rotate in opposite directions. The feeding rollers (21) are respectively in contact with the surface of the aluminum strip to continuously convey the aluminum strip to the shaping roller group (3).

3. The sill aluminum double-layer composite forming machine according to claim 1, characterized in that: The shaping roller group (3) includes an upper shaping roller (31) and a lower shaping roller (32). In the middle of the circumferential side wall of the upper shaping roller (31), there is a groove (311). In the middle of the circumferential side wall of the lower shaping roller (32), there is a convex portion (321) adapted to the groove (311). The convex portion (321) and the groove (311) cooperate to arch the middle of the aluminum strip to form a symmetrical structure with a middle section (10), vertical edge sections (101), and side edge sections (102).

4. The sill aluminum double-layer composite molding machine according to claim 1, characterized in that: The first hemming roller group (4) includes an upper first hemming roller (41) and a lower first hemming roller (42). At the edge of the upper first hemming roller (41), there is a folding convex edge (43). On the circumferential side wall of the lower first hemming roller (42), there is an inner convex portion one (45) and side convex portions one (46) on both sides of the inner convex portion one (45). Between the inner convex portion one (45) and the side convex portions one (46), there is a hemming groove (47) adapted to the folding convex edge (43). On the outer side of the folding convex edge (43), there is a first inclined surface (44). On the side convex portion one (46) and close to the folding convex edge (43), there is a second inclined surface (48). The first inclined surface (44) and the second inclined surface (48) cooperate to bend the side edge section (102) of the aluminum strip towards the vertical edge section (101).

5. The sill aluminum alloy double-layer composite forming machine according to claim 4, characterized in that: There are multiple groups of the first hemming roller group (4). The inclined surface angles of the first inclined surface (44) and the second inclined surface (48) on adjacent first hemming roller groups (4) increase in a gradient, and accordingly, the angle between the side edge section (102) and the vertical edge section (101) gradually decreases.

6. The sill aluminum double-layer composite molding machine according to claim 1, characterized in that: The second hemming roller set (5) includes an upper second hemming roller (51) and a lower second hemming roller (52). A shaping convex rib (53) for pressing and folding the vertical edge section (101) of the aluminum strip to be perpendicular to the middle section (10) is provided at the edge of the upper second hemming roller (51). An inner convex part two (54) and side convex parts two (55) located on both sides of the inner convex part two (54) are provided on the lower second hemming roller (52). A vertical groove (56) for pressing and folding the side edge section (102) of the aluminum strip to partially fit with the vertical edge section (101) is formed between the inner convex part two (54) and the side convex parts two (55).

7. The sill aluminum double-layer composite forming machine according to claim 1, characterized in that: The first flanging roller set (6) includes an inner supporting wheel one (61) for supporting the middle section (10) and the vertical edge section (101) of the aluminum strip. A positioning wheel (62) is provided on one side of the inner supporting wheel one (61), and a first folding wheel (63) is provided on the other side of the inner supporting wheel one (61). A first folding part (64) with a conical cross-section shape extends towards the inner supporting wheel one (61) at the top of the first folding wheel (63). An inclined wheel one (65) inclined towards one side of the first folding wheel (63) is provided above the inner supporting wheel one (61). The inclined wheel one (65) and the first folding part (64) cooperate to gradually fold the end of the side edge section (102) on one side towards the direction close to the middle section (10).

8. The sill aluminum alloy double-layer composite forming machine according to claim 1, wherein: The second flanging roller set (7) includes an inner supporting wheel two (71) for supporting the middle section (10) and the vertical edge section (101) of the aluminum strip. A shaping wheel (72) for fitting with the folded side edge section (102) is provided on one side of the inner supporting wheel two (71), and a second folding wheel (73) is provided on the other side of the inner supporting wheel two (71). A second folding part (74) with a conical cross-section shape extends towards the inner supporting wheel two (71) at the top of the second folding wheel (73). An inclined wheel two (75) inclined towards one side of the second folding wheel (73) is provided above the inner supporting wheel two (71). The inclined wheel two (75) and the second folding part (74) cooperate to gradually fold the end of the side edge section (102) on the other side towards the direction close to the middle section (10).

9. The sill aluminum alloy double-layer composite forming machine according to claim 1, wherein: The forming roller set (8) includes a lower pressing roller (81) for supporting the middle section (10) and the vertical edge section (101) of the aluminum strip. Side pressing rollers (82) are provided on both sides of the lower pressing roller (81). The side pressing rollers (82) and the lower pressing roller (81) cooperate to compound the two sides of the door sill into a double-layer structure. An upper pressing roller (83) for rolling and pressing the end of the side edge section (102) is provided at the top of the lower pressing roller (81). The upper pressing roller (83) and the lower pressing roller (81) cooperate to compound the top of the door sill into a double-layer structure.

10. The sill aluminum double-layer composite molding machine according to claim 1, characterized in that: It further includes a limiting roller set (9). The limiting roller set (9) includes limiting rollers (91) rotatably installed on both sides of the aluminum strip. Limiting grooves (92) for contacting the edge of the aluminum strip to limit the movement direction of the aluminum strip are provided on the limiting rollers (91).

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