Automatic edge milling and flanging method for metal composite plate

Abstract

The invention discloses an automatic edge milling and flanging method for a metal composite plate. The automatic edge milling and flanging method comprises the steps that S1, an automatic edge milling and flanging machine is provided; s2, preparation work before the automatic edge milling and flanging machine is started; s3, the automatic edge milling and flanging machine is started, and the metal composite plate runs in a conveying channel between the pressing roller set and the conveying device; s4, the front end of the edge of the metal composite plate makes contact with a first edge milling tool, and edge milling is conducted in the conveying process; s5, the lower-layer metal plate on the edge of the metal composite plate is extruded and bent upwards to form a vertical side plate part; s6, when the inner flanging process is carried out, the vertical side plate part of the metal composite plate is flanged inwards to wrap the side part of the metal composite plate; when the flanging process is carried out, the vertical side plate part of the metal composite plate is folded outwards, and the outwards-folded vertical side plate part forms a horizontal outwards-folded part; according to the method, edge milling, vertical flanging and inward or outward flanging can be achieved in the conveying process of the metal composite plate, assembly line edge milling and flanging are completed, and the method is suitable for different production processes.

Description

Technical Field

[0001] The invention relates to the technical field of metal composite plate production, in particular to an automatic edge milling and flanging method for a metal composite plate. Background Art

[0002] Metal composite panels are made of multiple layers of materials. The upper and lower layers are high-purity aluminum alloy plates, and the middle layer is a low-density polyethylene core plate. Metal composite panels have good weather resistance, high strength, easy maintenance, good plasticity, impact resistance, can reduce the load on buildings, and have good shock resistance. However, metal composite panels cannot be produced in a large area, so metal composite panels need to be assembled and welded. In order to improve the firmness of welding, it is necessary to mill the edges of the metal composite panels to increase the welding area, and it is also necessary to flanging to make the two metal composite panels fit together to make the assembly welding more firm.

[0003] Patent No. 201110257292.3 discloses a special milling power head for trimming metal composite plates, including a connecting bracket, a frame, a speed-regulating gearbox, a motor, a spindle guide device, a compression spring, a limit guide device and a round nose milling cutter disc group; the connecting bracket is connected to the frame by bolts, the spindle guide device is welded to the frame, the motor is fixed to the speed-regulating gearbox by bolts, and then the motor and the speed-regulating gearbox are integrally installed on the spindle guide device, the compression spring is inserted from the lower part of the spindle, and the round nose milling cutter disc group is installed at the lower end of the spindle. When trimming the edge of the metal composite plate, the round nose milling cutter disc group can only mill a thinner layer, and the limit guide device and the guide disc limit the sinking depth of the round nose milling cutter disc group, making it impossible to mill stably, and when the milling width exceeds the round nose milling cutter disc group, the milling efficiency will also deteriorate.

[0004] After milling, the plate needs to be folded and transported to a designated flanging station. The flanging station can only perform flanging in one direction. When flanging in other directions is required, it needs to be moved to another flanging station, which increases the complexity of processing and affects production efficiency. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an automatic milling and flanging method for metal composite plates, which can realize milling, vertical flanging, inward or outward flanging during the transportation of metal composite plates, complete assembly line milling and flanging, and is suitable for different production processes.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: an automatic milling and flanging method for a metal composite plate, comprising the following steps:

[0007] S1. Provide an automatic milling and flanging machine, comprising a machine base, on which a conveying device for conveying a metal composite plate is arranged, and on which a pressing device for pressing the metal composite plate is also arranged above the conveying device, and the pressing device comprises a guide column fixed on the machine base, on which a pressing seat is vertically lifted and lowered, and on which a plurality of pressing roller groups are rotatably mounted, and a conveying channel for facilitating the passage of the metal composite plate is formed between the pressing roller group and the conveying surface of the conveying device, and a pressing seat lifting and adjusting mechanism for adjusting the height of the pressing seat is arranged on the machine base, and a milling device for milling the edge of the metal composite plate, a lower flanging device for flanging the edge plate portion of the metal composite plate upward to form a vertical edge plate portion, an inner flanging device for flanging the vertical edge plate portion inwardly, and an outer flanging device for flanging the vertical edge plate portion outwardly are sequentially arranged on the machine base along the conveying direction of the metal composite plate;

[0008] The edge milling device comprises a first edge milling mechanism installed on a machine base and located at one side of the metal composite plate, the first edge milling mechanism comprises a first edge milling base installed on the machine base, a first edge milling lifting seat is vertically lifted and lowered on the first edge milling base, a first edge milling height adjustment mechanism for adjusting the height of the first edge milling lifting seat is arranged on the first edge milling base, a first edge milling tool driven to rotate by a first edge milling power head is fixedly installed on the first edge milling lifting seat, the first edge milling tool rotates around a vertical rotation center line, and the first edge milling tool contacts the upper part of the edge of the metal composite plate;

[0009] The lower flanging device comprises a lower flanging frame fixed on the machine base and located on the outer side of the composite plate, a plurality of lower mounting plates are arranged on the lower flanging frame, a lower flanging roller seat is fixedly mounted on each lower mounting plate, a lower flanging roller is rotatably mounted on each lower flanging roller seat, the central axis of the upstream lower flanging roller at the most upstream is arranged horizontally, the central axis of the downstream lower flanging roller at the most downstream is arranged vertically, and the central axis of the middle lower flanging roller between the upstream lower flanging roller and the downstream lower flanging roller gradually increases in accordance with the intersection angle between the conveying direction of the composite plate and the horizontal plane;

[0010] The inner flanging device comprises an inner flanging bracket which is laterally slidably mounted on the machine base and is located outside the composite plate, the machine base is provided with an inner flanging transverse adjustment mechanism for laterally adjusting the inner flanging bracket, and the inner flanging bracket is provided with an inner flanging roller group for conveniently pressing the vertical side plate portion of the composite plate inward;

[0011] The outer flanging device comprises a lower outer flanging bracket which is laterally slidably mounted on the machine base and located at the outer side of the composite plate, and the machine base is provided with an outer flanging lateral adjustment mechanism for laterally adjusting the lower outer flanging bracket, and at least two lower positioning rollers are rotatably mounted on the lower outer flanging bracket, and the central axis of the lower positioning roller is vertically arranged, and the upper outer flanging bracket is installed on the pressing seat through the upper outer flanging vertical adjustment mechanism, and at least one horizontally arranged outer flanging extrusion roller and at least one horizontally arranged outer flanging pressing roller are rotatably mounted on the upper outer flanging bracket, and at least two lower positioning rollers are respectively matched with the outer flanging extrusion roller and the outer flanging pressing roller, and the outer end of the outer flanging extrusion roller is provided with a conical extrusion portion which extrudes the vertical edge plate portion from the inside to the outside, and the outer flanging pressing roller is located downstream of the outer flanging extrusion roller, and the outer flanging pressing roller extrudes the vertical edge plate portion which turns outward from top to bottom to make it horizontal;

[0012] S2. Preparation work before starting the automatic milling and flanging machine:

[0013] The milling device, the inner flanging device and the outer flanging device are adjusted according to the process of the metal composite plate; the height of the first milling lifting seat is adjusted by the first milling height adjustment mechanism to control the milling depth of the first milling tool; when the inner flanging process is required, the upper outer flanging bracket is slid upward to avoid the vertical edge plate portion by the upper outer flanging vertical adjustment mechanism; when the outer flanging process is required, the inner flanging bracket is adjusted to slide outward horizontally to avoid the vertical edge plate portion by the inner flanging horizontal adjustment mechanism;

[0014] S3, starting the automatic milling and flanging machine, and the metal composite plate runs in the conveying channel between the pressing roller group and the conveying device;

[0015] S4, the front end of the edge of the metal composite plate contacts the first edge milling tool and is milled during the conveying process, the upper metal plate and the core plate of the edge of the metal composite plate are milled away and the lower metal plate of the edge of the metal composite plate is retained;

[0016] S5, the lower metal plate at the edge of the metal composite plate passes through the upstream lower flanging roller, the middle lower flanging roller and the downstream lower flanging roller in sequence and is extruded, bent and flanged upward to form a vertical edge plate portion;

[0017] S6. When the inner flanging process is performed, the vertical side plate portion of the metal composite plate is in contact with the inner flanging roller group and extruded to wrap the edge of the metal composite plate inwardly; when the outer flanging process is performed, the vertical side plate portion of the metal composite plate is squeezed by the conical extrusion portion of the outer flanging extrusion roller and folded outward at the upper end surface of the corresponding lower positioning roller, and the outward-turned vertical side plate portion is squeezed by the outer flanging pressing roller to form a horizontal outward-turned portion.

[0018] As a preferred solution, the method includes two edge milling operations, wherein the first edge milling operation removes the upper metal plate of the metal composite plate, and the second edge milling operation removes the core plate of the metal composite plate.

[0019] As a preferred solution, in this method, a second milling mechanism is used to perform a second milling, and the second milling mechanism uses a second milling cutter rotating around a horizontal rotation center line to mill away the core layer plate.

[0020] As a preferred solution, the number of the first edge milling mechanism and the second edge milling mechanism are both two sets, and when one set is in use, the other set is kept as a standby.

[0021] As a preferred solution, the horizontal position of the outer flanging extrusion roller is adjustable, and the extrusion contact position between the conical extrusion portion and the vertical edge plate portion is changed by changing the horizontal position of the outer flanging extrusion roller, thereby adjusting the outer flanging angle.

[0022] As a preferred solution, the height of the lower positioning roller is adjustable, and the upper end surface of the lower positioning roller cooperating with the outer flanging extrusion roller is higher than the upper end surface of the lower positioning roller cooperating with the outer flanging pressing roller.

[0023] As a preferred solution, in the milling step of the method, the width of the core layer plate milled away by the second milling is smaller than the width of the upper metal plate milled away by the first milling. At this time, part of the core layer plate is still exposed at the edge of the metal composite plate, and the exposed core layer plate of the metal composite plate is wrapped during the inner flanging.

[0024] After adopting the above technical solution, the effect of the present invention is: the automatic milling and flanging method of the metal composite plate includes the following steps:

[0025] S1. Provide an automatic milling and flanging machine, comprising a machine base, on which a conveying device for conveying a metal composite plate is arranged, and on which a pressing device for pressing the metal composite plate is also arranged above the conveying device, and the pressing device comprises a guide column fixed on the machine base, on which a pressing seat is vertically lifted and lowered, and on which a plurality of pressing roller groups are rotatably mounted, and a conveying channel for facilitating the passage of the metal composite plate is formed between the pressing roller group and the conveying surface of the conveying device, and a pressing seat lifting and adjusting mechanism for adjusting the height of the pressing seat is arranged on the machine base, and a milling device for milling the edge of the metal composite plate, a lower flanging device for flanging the edge plate portion of the metal composite plate upward to form a vertical edge plate portion, an inner flanging device for flanging the vertical edge plate portion inwardly, and an outer flanging device for flanging the vertical edge plate portion outwardly are sequentially arranged on the machine base along the conveying direction of the metal composite plate;

[0026] The edge milling device comprises a first edge milling mechanism installed on a machine base and located at one side of the metal composite plate, the first edge milling mechanism comprises a first edge milling base installed on the machine base, a first edge milling lifting seat is vertically lifted and lowered on the first edge milling base, a first edge milling height adjustment mechanism for adjusting the height of the first edge milling lifting seat is arranged on the first edge milling base, a first edge milling tool driven to rotate by a first edge milling power head is fixedly installed on the first edge milling lifting seat, the first edge milling tool rotates around a vertical rotation center line, and the first edge milling tool contacts the upper part of the edge of the metal composite plate;

[0027] The lower flanging device comprises a lower flanging frame fixed on the machine base and located on the outer side of the composite plate, a plurality of lower mounting plates are arranged on the lower flanging frame, a lower flanging roller seat is fixedly mounted on each lower mounting plate, a lower flanging roller is rotatably mounted on each lower flanging roller seat, the central axis of the upstream lower flanging roller at the most upstream is arranged horizontally, the central axis of the downstream lower flanging roller at the most downstream is arranged vertically, and the central axis of the middle lower flanging roller between the upstream lower flanging roller and the downstream lower flanging roller gradually increases in accordance with the intersection angle between the conveying direction of the composite plate and the horizontal plane;

[0028] The inner flanging device comprises an inner flanging bracket which is laterally slidably mounted on the machine base and is located outside the composite plate, the machine base is provided with an inner flanging transverse adjustment mechanism for laterally adjusting the inner flanging bracket, and the inner flanging bracket is provided with an inner flanging roller group for conveniently pressing the vertical side plate portion of the composite plate inward;

[0029] The outer flanging device comprises a lower outer flanging bracket which is laterally slidably mounted on the machine base and located at the outer side of the composite plate, and the machine base is provided with an outer flanging lateral adjustment mechanism for laterally adjusting the lower outer flanging bracket, and at least two lower positioning rollers are rotatably mounted on the lower outer flanging bracket, and the central axis of the lower positioning roller is vertically arranged, and the upper outer flanging bracket is installed on the pressing seat through the upper outer flanging vertical adjustment mechanism, and at least one horizontally arranged outer flanging extrusion roller and at least one horizontally arranged outer flanging pressing roller are rotatably mounted on the upper outer flanging bracket, and at least two lower positioning rollers are respectively matched with the outer flanging extrusion roller and the outer flanging pressing roller, and the outer end of the outer flanging extrusion roller is provided with a conical extrusion portion which extrudes the vertical edge plate portion from the inside to the outside, and the outer flanging pressing roller is located downstream of the outer flanging extrusion roller, and the outer flanging pressing roller extrudes the vertical edge plate portion which turns outward from top to bottom to make it horizontal;

[0030] S2. Preparation work before starting the automatic milling and flanging machine:

[0031] The milling device, the inner flanging device and the outer flanging device are adjusted according to the process of the metal composite plate; the height of the first milling lifting seat is adjusted by the first milling height adjustment mechanism to control the milling depth of the first milling tool; when the inner flanging process is required, the upper outer flanging bracket is slid upward to avoid the vertical edge plate portion by the upper outer flanging vertical adjustment mechanism; when the outer flanging process is required, the inner flanging bracket is adjusted to slide outward horizontally to avoid the vertical edge plate portion by the inner flanging horizontal adjustment mechanism;

[0032] S3, starting the automatic milling and flanging machine, and the metal composite plate runs in the conveying channel between the pressing roller group and the conveying device;

[0033] S4, the front end of the edge of the metal composite plate contacts the first edge milling tool and is milled during the conveying process, the upper metal plate and the core plate of the edge of the metal composite plate are milled away and the lower metal plate of the edge of the metal composite plate is retained;

[0034] S5, the lower metal plate at the edge of the metal composite plate passes through the upstream lower flanging roller, the middle lower flanging roller and the downstream lower flanging roller in sequence and is extruded, bent and flanged upward to form a vertical edge plate portion;

[0035] S6. When the inner flanging process is performed, the vertical side plate portion of the metal composite plate contacts and extrude the inner flanging roller group to wrap the side of the metal composite plate with the inner flanging roller group; when the outer flanging process is performed, the vertical side plate portion of the metal composite plate is squeezed by the conical extrusion portion of the outer flanging extrusion roller and folded outward at the upper end surface of the corresponding lower positioning roller, and the outward-turned vertical side plate portion is squeezed by the outer flanging pressure roller to form a horizontal outward-turned portion; the metal composite plate can be continuously and stably conveyed by the conveying device and the clamping device, so that the metal composite plate can automatically complete milling after passing through the first milling tool, and then pass through the lower flanging device and the inner flanging device or the lower flanging device and the outer flanging device in turn, and automatically complete the inner flanging or outer flanging, and at the same time, it can effectively reduce manual participation and improve efficiency; this method can realize milling, vertical flanging, inward or outward flanging in the process of conveying the metal composite plate, complete the assembly line milling and flanging, and is suitable for different production processes.

[0036] Furthermore, since the method mills the edges twice, the first milling removes the upper metal plate of the metal composite plate, and the second milling removes the core plate of the metal composite plate; the milling accuracy can be effectively improved, and the high quality of the flanging after milling is guaranteed.

[0037] In this method, a second milling mechanism is used for the second milling. The second milling mechanism uses a second milling cutter rotating around a horizontal rotation center line to mill away the core layer plate. The corresponding milling method is used for milling to increase the milling depth and improve the milling efficiency.

[0038] Since the number of the first milling mechanism and the second milling mechanism are both two, when one set is in use, the other set is on standby; they are used alternately, and when one set is being repaired, the other set can be promptly replaced, thereby ensuring stable operation and improving efficiency.

[0039] Since the horizontal position of the outer flanging extrusion roller is adjustable, the extrusion contact position of the conical extrusion portion and the vertical side plate portion can be changed by changing the horizontal position of the outer flanging extrusion roller, thereby adjusting the outer flanging angle; in this way, the outward angle of the vertical side plate portion can be changed during transportation, thereby improving the flexibility during flanging.

[0040] Because the height of the lower positioning roller is adjustable, the upper end surface of the lower positioning roller that cooperates with the outer flanging extrusion roller is higher than the upper end surface of the lower positioning roller that cooperates with the outer flanging pressing roller; because the lower positioning roller needs to be higher than the upper surface of the metal composite plate when the outer flanging extrusion roller is extruding the metal composite plate to ensure that the folded edge during flanging will not be lower than the upper surface of the metal composite plate, as the flanging angle increases, the lower positioning roller can be lowered until the vertical edge plate portion supported is flush with the upper surface of the metal composite plate.

[0041] Furthermore, in the milling step of the method, the width of the core layer plate milled by the second milling is smaller than the width of the upper metal plate milled by the first milling. At this time, part of the core layer plate is still exposed at the edge of the metal composite plate, and the exposed core layer plate of the metal composite plate is wrapped during the inner flanging. In this way, the core layer plate can be effectively protected after the lower metal plate is flanging, thereby ensuring the strength of the metal composite plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0043] Figure 1 is a front view of an embodiment of the present invention;

[0044] Figure 2 It is a left side view of the first edge milling mechanism of the embodiment of the present invention;

[0045] Figure 3 It is a left side view of the second edge milling mechanism of the embodiment of the present invention;

[0046] Figure 4 2. It is a left side view of the bottom flanging device according to an embodiment of the present invention;

[0047] Figure 5 is a schematic structural diagram of a lower flanging device according to an embodiment of the present invention;

[0048] Figure 6 is a side view of the outer flanging device according to an embodiment of the present invention;

[0049] Figure 7 is a side view of the internal flanging device of an embodiment of the present invention

[0050] Figure 8 Schematic diagram of the structure of the outer flanging device of the embodiment of the present invention

[0051] Fig. 9 2 is a cross-sectional view of an outer flange extrusion roller according to an embodiment of the present invention.

[0052] Fig.10 is an enlarged view of the first edge milling mechanism and the second edge milling mechanism of the embodiment of the present invention;

[0053] In the attached drawings: 1. machine base; 2. first milling base; 3. first milling lifting seat; 4. first milling tool; 5. guide column; 6. clamping seat; 7. clamping roller group; 8. upstream screw lift; 9. downstream screw lift; 10. synchronous connecting rod; 11. operating hand wheel; 12. first milling screw nut mechanism; 13. first adjusting hand wheel; 14. first milling motor; 15. first spacing adjusting screw nut mechanism; 16. second milling base; 17. second milling lifting seat; 18. second milling tool; 19. second milling screw nut mechanism; 20. second adjusting hand wheel; 21. second milling motor; 22. second spacing adjusting screw nut mechanism; 23. conveyor belt; 24. belt conveyor wheel; 25. metal composite plate; 26. first spacing adjusting hand wheel; 27. second spacing adjusting hand wheel.

[0054] 28. Lower mounting plate; 29. ​​Lower flanging roller seat; 30. Upstream lower flanging roller; 31. Downstream lower flanging roller; 32. Middle lower flanging roller; 33. Lower horizontal fixing plate; 34. Upper vertical fixing plate; 35. Lower vertical strip hole; 36. Fixing bolt; 37. Sleeve hole; 38. Fixing nut; 39. Tightening bolt;

[0055] 40. Inner flanging bracket; 41. Vertical side plate; 42. Lower outer flanging bracket; 43. Lower positioning roller; 44. Upper outer flanging bracket; 45. Outer flanging extrusion roller; 46. Outer flanging pressure roller; 47. Conical extrusion part; 48. Upstream inner flanging roller; 49. Downstream inner flanging roller; 50. Middle inner flanging roller; 51. Inner flanging lateral adjustment mechanism; 52. Lower inner horizontal fixing plate; 53. Upper inner vertical fixing plate; 54. Inner mounting plate; 55. Vertical adjustment strip hole; 56. Outer flanging lateral adjustment mechanism; 57. Positioning roller seat; 58. Positioning screw lifter; 59. Manual turntable; 60. Upper vertical strip hole; 61. Center screw; 62. Adjusting screw sleeve; 63. Screwing part; 64. Compression spring; 65. Rotating bearing. DETAILED DESCRIPTION

[0056] The present invention is further described in detail below through specific examples.

[0057] like Figures 1 to 10 As shown, an embodiment of the present invention discloses an automatic milling and flanging method for a metal composite plate, comprising the following steps:

[0058] S1. Provide an automatic milling and flanging machine, comprising a machine base 1, on which a conveying device for conveying a metal composite plate 25 is arranged, and on which a pressing device for pressing the metal composite plate 25 is also installed above the conveying device, the pressing device comprises a guide column 5 fixed on the machine base 1, on which a pressing seat 6 is vertically lifted and lowered, on which a plurality of pressing roller groups 7 are rotatably installed, and between the pressing roller group 7 and the conveying surface of the conveying device a conveying channel for facilitating the passage of the metal composite plate 25 is formed, and on the machine base 1 a pressing seat 6 lifting and lowering adjustment mechanism for adjusting the height of the pressing seat 6 is arranged, and on the machine base 1 along the conveying direction of the metal composite plate 25, a milling device for milling the edge of the metal composite plate 25, a lower flanging device for flanging the edge plate portion of the metal composite plate 25 upward to form a vertical edge plate portion 41, an inner flanging device for flanging the vertical edge plate portion 41 inwardly, and an outer flanging device for flanging outwardly;

[0059] The milling device includes a first milling mechanism installed on the machine base 1 and located on one side of the metal composite plate 25, the first milling mechanism includes a first milling base 2 installed on the machine base 1, a first milling lifting seat 3 is vertically lifted and installed on the first milling base 2, a first milling height adjustment mechanism for adjusting the height of the first milling lifting seat 3 is provided on the first milling base 2, a first milling tool 4 driven to rotate by a first milling power head is fixedly installed on the first milling lifting seat 3, the first milling tool 4 rotates around the vertical rotation center line, and the first milling tool 4 contacts the upper part of the edge of the metal composite plate 25;

[0060] The lower flanging device comprises a lower flanging frame fixed on the machine base 1 and located outside the composite plate, the lower flanging frame is provided with a plurality of lower mounting plates 28, each lower mounting plate 28 is fixedly provided with a lower flanging roller seat 29, each lower flanging roller seat 29 is rotatably provided with a lower flanging roller, the central axis of the upstream lower flanging roller 30 at the most upstream is horizontally arranged, the central axis of the downstream lower flanging roller 31 at the most downstream is vertically arranged, and the central axis of the middle lower flanging roller 32 between the upstream lower flanging roller 30 and the downstream lower flanging roller 31 gradually increases according to the intersection angle between the conveying direction of the composite plate and the horizontal plane;

[0061] The inner flanging device comprises an inner flanging bracket 40 which is laterally slidably mounted on the machine base 1 and is located outside the composite plate. The machine base 1 is provided with an inner flanging transverse adjustment mechanism for laterally adjusting the inner flanging bracket 40. The inner flanging bracket 40 is provided with an inner flanging roller group for conveniently pressing the vertical side plate portion 41 of the composite plate inward.

[0062] The outer flanging device includes a lower outer flanging bracket 42 which is laterally slidably mounted on the machine base 1 and is located on the outer side of the composite plate. The machine base 1 is provided with an outer flanging lateral adjustment mechanism 56 for laterally adjusting the lower outer flanging bracket 42. At least two lower positioning rollers 43 are rotatably mounted on the lower outer flanging bracket 42. The central axis of the lower positioning roller 43 is vertically arranged. An upper outer flanging bracket 44 is mounted on the pressing seat 6 through the upper outer flanging vertical adjustment mechanism. At least one horizontally arranged outer flanging squeezing roller 45 and at least one horizontally arranged outer flanging pressing roller 46, at least two lower positioning rollers 43 cooperate with the outer flanging squeezing roller 45 and the outer flanging pressing roller 46 respectively, the outer end of the outer flanging squeezing roller 45 is provided with a conical squeezing portion 47 for squeezing the vertical edge plate portion 41 from the inside to the outside, the outer flanging pressing roller 46 is located downstream of the outer flanging squeezing roller 45, and the outer flanging pressing roller 46 squeezes the outwardly turned vertical edge plate portion 41 from top to bottom to make it horizontal;

[0063] S2. Preparation work before starting the automatic milling and flanging machine:

[0064] The milling device, the inner flanging device and the outer flanging device are adjusted according to the process of the metal composite plate 25; the height of the first milling lifting seat 3 is adjusted by the first milling height adjustment mechanism to control the milling depth of the first milling tool 4; when the inner flanging process is required, the upper outer flanging bracket 44 is slid upward to avoid the vertical side plate portion 41 through the upper outer flanging vertical adjustment mechanism; when the outer flanging process is required, the inner flanging bracket 40 is adjusted to slide outward horizontally to avoid the vertical side plate portion 41 through the inner flanging horizontal adjustment mechanism;

[0065] S3, start the automatic milling and flanging machine, and the metal composite plate 25 runs in the conveying channel between the pressing roller group 7 and the conveying device;

[0066] S4, the front end of the edge of the metal composite plate 25 contacts the first edge milling tool 4 and is milled during the conveying process, and the upper metal plate and the core plate of the edge of the metal composite plate 25 are milled away, and the lower metal plate of the edge of the metal composite plate 25 is retained;

[0067] S5, the lower metal plate at the edge of the metal composite plate 25 passes through the upstream lower flanging roller 30, the middle lower flanging roller 32 and the downstream lower flanging roller 31 in sequence and is squeezed and bent upward to form a vertical edge plate portion 41;

[0068] S6. When the inner flanging process is performed, the vertical side plate portion 41 of the metal composite plate 25 contacts and is extruded by the inner flanging roller group to wrap the edge of the metal composite plate 25 inwardly; when the outer flanging process is performed, the vertical side plate portion 41 of the metal composite plate 25 is squeezed by the conical extrusion portion 47 of the outer flanging extrusion roller 45 and folded outward at the upper end surface of the corresponding lower positioning roller 43, and the outward-turned vertical side plate portion 41 is squeezed by the outer flanging pressing roller 46 to form a horizontal outward-turned portion; the metal composite plate 25 can be continuously and stably conveyed by the conveying device and the pressing device. 5, so that the metal composite plate 25 can be automatically milled after passing through the first milling tool 4, and the metal composite plate 25 needs to ensure that the upper metal plate and the middle core plate are effectively milled, and then pass through the lower flanging device and the inner flanging device or the lower flanging device and the outer flanging device in turn, automatically completing the inner flanging or outer flanging, and at the same time can effectively reduce manual participation and improve efficiency; this method can realize milling, vertical flanging, inward or outward flanging during the conveying process of the metal composite plate 25, complete the assembly line milling and flanging, and is suitable for different production processes.

[0069] Preferably, the method is milled twice, the first milling removes the upper metal plate of the metal composite plate 25; the second milling removes the core plate of the metal composite plate 25; the milling accuracy can be effectively improved to ensure high quality of flanging after milling.

[0070] Preferably, in this method, a second milling mechanism is used for the second milling, and the second milling mechanism uses a second milling tool rotating around a horizontal rotation center line to mill off the core layer plate; the strength of the core layer plate is lower than that of the upper metal plate, so the corresponding milling method is used for milling to increase the milling depth and improve the milling efficiency.

[0071] Preferably, the number of the first milling mechanism and the second milling mechanism are both two sets, when one set is in use, the other set is on standby; they are used alternately, when one set is being repaired, the other set can be promptly replaced and used, to ensure stable operation and improve efficiency.

[0072] Preferably, the horizontal position of the outer flanging extrusion roller 45 is adjustable, and the extrusion contact position between the conical extrusion portion 47 and the vertical side plate portion 41 is changed by changing the horizontal position of the outer flanging extrusion roller 45, thereby adjusting the outward turning angle; the outward angle of the vertical side plate portion 41 is changed during the conveying process to improve the flexibility during flanging.

[0073] Preferably, the height of the lower positioning roller 43 is adjustable, and the upper end surface of the lower positioning roller 43 cooperating with the outer flanging extrusion roller 45 is higher than the upper end surface of the lower positioning roller 43 cooperating with the outer flanging pressing roller 46; because the outer flanging extrusion roller 45 is extruding the metal composite plate 25, the lower positioning roller 43 needs to be higher than the upper surface of the metal composite plate 25 to ensure that the folded edge during flanging will not be lower than the upper surface of the metal composite plate 25, and as the flanging angle increases, the lower positioning roller 43 can be lowered until the vertical edge plate portion 41 supported is flush with the upper surface of the metal composite plate 25, ensuring the accuracy of the flanging when flanging outward.

[0074] Preferably, in the milling step of the method, the width of the core layer plate milled by the second milling is smaller than the width of the upper metal plate milled by the first milling. At this time, part of the core layer plate is still exposed at the edge of the metal composite plate 25, and the exposed core layer plate of the metal composite plate 25 is wrapped during the inner flanging. In this way, the lower metal plate can effectively cover and protect the exposed core layer plate, and at the same time be flush with the upper metal plate, thereby improving the aesthetics and ensuring the original strength of the metal composite plate 25.

[0075] In addition, the embodiment of the present invention also discloses an automatic milling and flanging machine for implementing the milling and flanging method.

[0076] like Figures 1 to 10 As shown, an automatic milling and flanging machine for metal composite plates includes a machine base 1, on which a conveying device for conveying a metal composite plate 25 is arranged, and on the machine base 1, a pressing device for pressing the metal composite plate 25 is also installed above the conveying device, and the pressing device includes a guide column 5 fixed to the machine base 1, and a pressing seat 6 is vertically lifted and installed on the guide column 5, and a plurality of pressing roller groups 7 are rotatably installed on the pressing seat 6, and the pressing roller group 7 and the conveying device are rotatably mounted. A conveying channel for the metal composite plate 25 to pass through is formed between the conveying surfaces. The machine base 1 is provided with a pressing seat 6 lifting and lowering adjustment mechanism for adjusting the height of the pressing seat 6. The machine base 1 is also provided with a milling device for milling the edge of the metal composite plate 25, a lower flanging device for flanging the edge of the metal composite plate 25 upward to form a vertical edge plate portion 41, an inner flanging device for flanging the vertical edge plate portion 41 inwardly, and an outer flanging device for flanging outwardly.

[0077] The milling device includes a first milling mechanism installed on the machine base 1 and located on one side of the metal composite plate 25, the first milling mechanism includes a first milling base 2 installed on the machine base 1, a first milling lifting seat 3 is vertically lifted and installed on the first milling base 2, a first milling height adjustment mechanism for adjusting the height of the first milling lifting seat 3 is provided on the first milling base 2, a first milling tool 4 driven to rotate by a first milling power head is fixedly installed on the first milling lifting seat 3, the first milling tool 4 rotates around the vertical rotation center line, and the first milling tool 4 contacts the upper part of the edge of the metal composite plate 25;

[0078] The lower flanging device comprises a lower flanging frame fixed on the machine base 1 and located outside the composite plate, the lower flanging frame is provided with a plurality of lower mounting plates 28, each lower mounting plate 28 is fixedly provided with a lower flanging roller seat 29, each lower flanging roller seat 29 is rotatably provided with a lower flanging roller, the central axis of the upstream lower flanging roller 30 at the most upstream is horizontally arranged, the central axis of the downstream lower flanging roller 31 at the most downstream is vertically arranged, and the central axis of the middle lower flanging roller 32 between the upstream lower flanging roller 30 and the downstream lower flanging roller 31 gradually increases according to the intersection angle between the conveying direction of the composite plate and the horizontal plane;

[0079] The inner flanging device comprises an inner flanging bracket 40 which is laterally slidably mounted on the machine base 1 and is located outside the composite plate. The machine base 1 is provided with an inner flanging transverse adjustment mechanism 51 for laterally adjusting the inner flanging bracket 40. The inner flanging bracket 40 is provided with an inner flanging roller group for conveniently pressing the vertical side plate portion 41 of the composite plate inward.

[0080] The outer flanging device includes a lower outer flanging bracket 42 which is laterally slidably mounted on the machine base 1 and is located on the outer side of the composite plate. The machine base 1 is provided with an outer flanging lateral adjustment mechanism 56 for laterally adjusting the lower outer flanging bracket 42. At least two lower positioning rollers 43 are rotatably mounted on the lower outer flanging bracket 42. The central axis of the lower positioning roller 43 is vertically arranged. An upper outer flanging bracket 44 is mounted on the pressing seat 6 through the upper outer flanging vertical adjustment mechanism. There are at least one horizontally arranged outer flanging extrusion roller 45 and at least one horizontally arranged outer flanging pressing roller 46, and at least two lower positioning rollers 43 cooperate with the outer flanging extrusion roller 45 and the outer flanging pressing roller 46 respectively. The outer end of the outer flanging extrusion roller 45 is provided with a conical extrusion portion 47 for extruding the vertical edge plate portion 41 from the inside to the outside. The outer flanging pressing roller is located downstream of the outer flanging extrusion roller 45, and the outer flanging pressing roller squeezes the outward-turned vertical edge plate portion 41 from top to bottom to make it horizontal.

[0081] In this embodiment, the clamping device includes a guide column 5 fixed on the machine base 1, a clamping seat 6 is vertically mounted on the guide column 5, a plurality of clamping roller groups 7 are rotatably mounted on the clamping seat 6, and a conveying channel for facilitating the passage of the metal composite plate 25 is formed between the clamping roller group 7 and the conveying surface of the conveying device, and a clamping seat 6 lifting and adjusting mechanism for adjusting the height of the clamping seat 6 is provided on the machine base 1; the guide column 5 can ensure that the clamping seat 6 can be accurate and stable when lifted and lowered, and the clamping roller group 7 can clamp the metal composite plate 25 as a whole and effectively convey it as the clamping seat 6 descends, and the clamping roller group 7 can follow the metal composite plate 25 to assist in conveying and ensure the clamping force.

[0082] like Figure 1 As shown, the lifting and lowering adjustment mechanism of the clamping seat 6 includes an upstream screw lift 8 and a downstream screw lift 9, the lifting seats of the upstream screw lift 8 and the downstream screw lift 9 are respectively fixedly connected to the clamping seat 6, and a synchronous connecting rod 10 is connected between the upstream screw lift 8 and the downstream screw lift 9, and the upstream screw lift 8 or the downstream screw lift 9 is provided with an operating hand wheel 11 or a driving power device; the driving power device can be a driving motor, and the operating hand wheel 11 or the driving motor is installed on the upstream screw lift 8, so that the worm of the upstream screw lift 8 is driven to rotate, and the worm wheel can be driven to rotate, so that the lifting seat can be lifted and lowered along the screw, and the synchronous connecting rod 10 can also synchronously drive the worm of the downstream screw lift 9, so that the lifting seats of the upstream screw lift 8 and the downstream screw lift 9 are lifted and lowered synchronously, so that the clamping roller group 7 can accurately press the metal composite plate 25; the upstream screw lift 8 and the downstream screw lift 9 are both existing structures on the market, so they are not described in detail in the text.

[0083] like Figure 2 As shown, the first milling base 2 is installed on the machine base 1 in a transverse and horizontal sliding manner, and a first milling spacing adjustment mechanism is arranged between the machine base 1 and the first milling base 2, and the first milling spacing adjustment mechanism drives the first milling base 2 to approach or move away from the edge of the metal composite plate 25; the first milling spacing adjustment mechanism is a first spacing adjustment lead screw nut mechanism 15, and the first milling base 2 of the first spacing adjustment lead screw nut mechanism 15 supports the first lifting seat, and the lead screw of the first spacing adjustment lead screw nut mechanism 15 is perpendicular to the conveying direction of the metal composite plate 25, so that the first spacing adjustment handwheel 26 drives the lead screw of the first spacing adjustment lead screw nut mechanism 15 to rotate and drive the nut to rotate, so that the first milling base 2 of the first spacing adjustment lead screw nut mechanism 15 can move laterally, and can control the milling width of the edge of the metal composite plate 25 by the first milling tool 4, thereby improving the milling flexibility.

[0084] Furthermore, the first milling height adjustment mechanism includes a first milling screw nut mechanism 12, the screw of the first milling screw nut mechanism 12 is rotatably installed on the first milling base 2 and is provided with a first adjusting handwheel 13, and the nut of the first milling screw nut mechanism 12 is fixedly connected to the first milling lifting seat 3; the first milling lifting seat 3 is a slider rail structure, so it can be lifted and slid accurately, and the first adjusting handwheel 13 is driven to rotate the screw to drive the nut to move up and down, thereby driving the first milling lifting seat 3 to effectively lift and lower, and control the milling height of the first milling tool 4. The first milling power head is a first milling motor 14, and the first milling motor 14 is fixedly installed on the first lifting seat. The first milling motor 14 and the first milling tool 4 are provided with a transmission structure to facilitate the first milling tool 4 to rotate around the vertical rotation center line. The structure is simple and the adjustment is accurate and convenient.

[0085] like Figure 3 As shown, the milling device also includes a second milling mechanism, which is arranged downstream of the first milling mechanism, and the second milling mechanism includes a second milling base 16 installed on the machine base 1 for horizontal sliding, and a second milling lifting seat 17 is vertically lifted and installed on the second milling base 16, and a second milling height adjustment mechanism for adjusting the height of the second milling lifting seat 17 is arranged on the second milling base 16, and a second milling tool 18 driven to rotate by a second milling power head is fixedly installed on the second milling lifting seat 17, and the second milling tool 18 rotates around the horizontal rotation center line, and the second milling tool 18 performs secondary milling on the upper edge of the metal composite plate 25; the second milling mechanism has the same structure as the first milling mechanism, and the second milling height adjustment mechanism is a second milling screw screw The mother mechanism 19, the screw of the second milling screw nut mechanism 19 is rotatably installed on the second milling base 16 and is provided with a second adjusting handwheel 20, and the nut of the second milling screw nut mechanism 19 is fixedly connected to the second milling lifting seat 17; the second milling lifting seat 17 is a slider rail structure, so it can be lifted and slid accurately, and the screw can be driven to rotate by the second adjusting handwheel 20 to drive the nut to move up and down, thereby driving the second milling lifting seat 17 to effectively lift and lower, and control the milling height of the second milling tool 18. The second milling power head is a second milling motor 21, and the second milling motor 21 is fixedly installed on the second lifting seat. The second milling motor 21 and the second milling tool 18 are provided with a transmission structure to facilitate the rotation of the second milling tool 18 around the horizontal center line. The structure is simple and the adjustment is accurate and convenient.

[0086] In this embodiment, a second milling spacing adjustment mechanism is arranged between the machine base 1 and the second milling base 16, and the second milling spacing adjustment mechanism drives the second milling base 16 to approach or move away from the edge of the metal composite plate 25; the second milling spacing adjustment mechanism is a second spacing adjustment lead screw nut mechanism 22, and the second milling base 16 of the second spacing adjustment lead screw nut mechanism 22 supports the second lifting seat, and the lead screw of the second spacing adjustment lead screw nut mechanism 22 is perpendicular to the conveying direction of the metal composite plate 25, so that the second spacing adjustment handwheel 27 drives the lead screw of the second spacing adjustment lead screw nut mechanism 22 to rotate and drive the nut to rotate, so that the second milling base 16 of the second spacing adjustment lead screw nut mechanism 22 can move laterally, and can control the milling width of the edge of the metal composite plate 25 by the second milling tool 18, thereby improving the milling flexibility.

[0087] Two first edge milling mechanisms and a second edge milling mechanism are arranged on the machine base 1, so that the first edge milling mechanism and the second edge milling mechanism can be used alternately in pairs, thereby improving the fault tolerance rate.

[0088] like Figure 4 and Figure 5 As shown, the lower flanging frame includes a lower horizontal fixing plate 33, an upper vertical fixing plate 34 and a plurality of lower mounting plates 28, the lower horizontal fixing plate 33 is fixed on the machine base 1, the upper vertical fixing plate 34 is fixed on the clamping seat 6 by fixing bolts 36, the upper vertical fixing plate 34 is provided with a plurality of vertically extending lower vertical strip holes 35, the fixing bolts 36 are constrained in the lower vertical strip holes 35, the lower end of the lower mounting plate 28 is fixedly connected to the lower horizontal fixing plate 33, and the upper end of the lower mounting plate 28 is fixedly connected to the upper vertical fixing plate 34; the lower horizontal fixing plate 33 and the upper vertical fixing plate 34 can ensure that the lower mounting plate 28 is accurately and firmly installed, and the upper vertical fixing plate 34 slides along the lower vertical strip holes 35 to adjust its position on the clamping seat 6, which can ensure that after the clamping seat 6 is raised or lowered, the upper vertical fixing plate 34 will not follow the raising or lowering, thereby ensuring accurate installation.

[0089] Furthermore, the lower mounting plate 28 is an arc-shaped mounting plate, and the lower flanging roller seat 29 is provided with a sleeve hole 37 which is sleeved on the arc-shaped mounting plate, and the lower flanging roller seat 29 is provided with a locking structure for locking the lower flanging roller seat 29; the lower flanging roller seat 29 can slide in an arc along the arc-shaped mounting plate through the sleeve hole 37, so that the angle of the lower flanging roller can be changed, and the position can be effectively fixed through the locking structure, and the adjustment is simple and convenient.

[0090] In this embodiment, the number of the intermediate lower flanging rollers 32 is three, and the angles between the central axes of the three intermediate lower flanging rollers 32 and the horizontal plane are 22.5°, 45° and 67.5° respectively; together with the upstream lower flanging roller 30 and the downstream lower flanging roller 31, the metal composite plate 25 can be stably transitioned and folded in sequence after being conveyed by the conveying device, so that the flanging can be stable and accurate, thereby improving the flanging accuracy.

[0091] like Figure 1 and Figure 7 As shown, the structure of the inner flanging bracket 40 is the same as that of the lower flanging bracket, and the inner flanging roller group includes an upstream inner flanging roller 48 at the most upstream, a downstream inner flanging roller 49 at the most downstream, and at least two intermediate inner flanging rollers 50 in the middle, the central axis of the upstream inner flanging roller 48 is vertically arranged, the central axis of the downstream inner flanging roller 49 is horizontally arranged, and the central axis of the intermediate inner flanging roller 50 gradually decreases in accordance with the intersection angle between the conveying direction of the metal composite plate 25 and the horizontal plane; the inner flanging bracket 40 is provided with There are a number of inner mounting plates 54 arranged at intervals. Since the vertical side plate portion 41 of the metal composite plate 25 needs to be flanged inward, the upstream inner flanging roller 48 changes its angle inward when changing its angle toward the downstream inner flanging roller 49. The upstream inner flanging roller 48 can effectively support the vertical side plate portion 41 of the metal composite plate 25, and then the middle inner flanging roller 50 can effectively tilt the vertical side plate portion 41, thereby continuously increasing the tilt angle, and finally the downstream inner flanging roller 49 completes the inner flanging to ensure that the inner flanging is accurate and stable.

[0092] Furthermore, the inner mounting plate 54 is an arc-shaped mounting plate, and the inner flanging roller seat is provided with a sleeve hole 37 which is sleeved on the arc-shaped mounting plate, and the inner flanging roller seat is provided with a locking structure for locking the inner flanging roller seat; the inner flanging roller seat can slide along the arc-shaped mounting plate through the sleeve hole 37, and then the position can be effectively fixed through the locking structure, and the adjustment is simple and convenient; the locking structure includes a fixing nut 38 welded to the outer side of the inner flanging roller seat, and a tightening bolt 39 is threadedly connected to the fixing nut 38, and the tightening bolt 39 tightens the outer end face of the inner mounting plate 54; the tightening bolt 39 can be rotated to support the outer end face of the inner mounting plate 54, thereby effectively fixing the inner flanging roller, and the structure is simple.

[0093] In this embodiment, the inner flange lateral adjustment mechanism 51 is a screw nut mechanism; a synchronously sliding lower inner horizontal fixing plate 52 is fixedly installed on the screw nut mechanism, and an upper inner vertical fixing plate 53 is slidably installed on the clamping seat 6. Several inner mounting plates 54 are fixedly installed between the lower inner horizontal fixing plate 52 and the upper inner vertical fixing plate 53. The upper inner vertical fixing plate 53 is fixed to the clamping seat 6 by fixing bolts 36. Several vertically extending vertical adjustment strip holes 55 are provided on the upper inner vertical fixing plate. The fixing bolts 36 are constrained in the vertical adjustment strip holes 55. The fixing plate 53 slides along the vertical adjustment strip hole 55 to adjust its position on the clamping seat 6, which can ensure that after the clamping seat 6 is raised or lowered, the upper inner vertical fixing plate 53 will not follow the raising or lowering, thereby ensuring accurate installation; at the same time, when the screw nut mechanism is adjusted to move laterally, the mounting plate will move laterally. It is only necessary to loosen the fixing bolt 36 so that the upper inner vertical fixing plate 53 is not fixed on the clamping seat 6 and can move away from the metal composite plate 25. Driving the inner flanging roller group to move closer to and away from the metal composite plate 25 is simple, quick and easy to operate; the screw nut mechanism is an existing structure on the market, so it is not described in detail in this article.

[0094] Furthermore, the number of the intermediate inner flanging rollers 50 is three, and the intersection angles between the central axis and the horizontal plane are 67.5°, 45° and 22.5° respectively; together with the upstream inner flanging roller 48 and the downstream inner flanging roller 49, the metal composite plate 25 can be stably transitioned and folded in sequence after being conveyed by the conveying device, so that the flanging can be stable and accurate, thereby improving the flanging accuracy.

[0095] In this embodiment, the outer flanging lateral adjustment mechanism 56 has the same structure as the inner flanging lateral adjustment mechanism 51; therefore, the outer flanging lateral adjustment mechanism 56 is also a screw-nut mechanism, and the lower positioning roller 43 is installed on the outer flanging lateral adjustment mechanism 56 to be close to or away from the vertical side plate portion 41 of the metal composite plate 25. In this way, the metal composite plate 25 can be flanging inward or outward by adjusting the lateral distance, which is convenient and quick to adjust and easy to use.

[0096] like Figure 6 and Figure 8As shown, each of the lower positioning rollers 43 is rotatably mounted on a corresponding positioning roller seat 57, and each positioning roller seat 57 is mounted on the lower flanging bracket through a positioning lifting and adjusting mechanism; because the outer flanging extrusion roller 45 is extruding the metal composite plate 25, the lower positioning roller 43 needs to be higher than the upper surface of the metal composite plate 25 to ensure that the folded edge during flanging will not be lower than the upper surface of the metal composite plate 25. As the flanging angle increases, the lower positioning roller 43 can be lowered until the vertical side plate portion 41 supported is flush with the upper surface of the metal composite plate 25. The lower positioning roller 43 can be controlled to be at the height of the vertical side plate portion 41 of the metal composite plate 25 through the positioning lifting and adjusting mechanism, so that it can cooperate with the corresponding outer flanging extrusion roller 45 and the outer flanging pressing roller 46; the positioning lifting and adjusting mechanism is a positioning screw elevator 58, and the positioning screw elevator 58 is provided with an artificial turntable 59 to drive the lower positioning roller 43 to a suitable height.

[0097] Furthermore, the upper outer flange vertical adjustment mechanism includes an upper vertical strip hole 60 arranged on the clamping seat 6, and the upper flanging bracket is fixed to the clamping seat 6 by bolts constrained in the upper vertical strip hole 60; the upper outer flange bracket 44 is adjusted in height by raising and lowering along the upper vertical strip hole 60, so as to change the height of the outer flange extrusion roller 45 and the outer flange pressing roller 46 to adapt to the thickness of different metal composite plates 25, and at the same time avoid outward flanging, with a simple structure and easy use.

[0098] like Figure 8 and Fig. 9 As shown, the outer flanging extrusion roller 45 is installed on the upper outer flanging bracket 44 through a horizontal adjustment structure. The outer flanging extrusion roller 45 can be effectively moved horizontally through the horizontal adjustment structure, so that the tapered extrusion portion 47 can be squeezed outward close to the vertical side plate portion 41 of the metal composite plate 25, so that the vertical side plate portion 41 gradually flanging outward until it is horizontal, thereby improving the flanging effect.

[0099] In this embodiment, the horizontal adjustment mechanism includes a central screw 61 fixed on the upper outer flanging bracket 44 and arranged horizontally, an adjusting screw sleeve 62 is threadedly installed on the central screw 61, the outer flanging extrusion roller 45 is rotatably installed on the adjusting screw sleeve 62, the outer end of the adjusting screw sleeve 62 is provided with a screwing portion 63 and exposed from the outer flanging extrusion roller 45, and a compression spring 64 is provided between the adjusting screw sleeve 62 and the upper outer flanging bracket 44; a rotating bearing 65 is provided between the adjusting screw sleeve 62 and the outer flanging extrusion roller 45 to ensure stable rotation, and the extension distance of the outer flanging extrusion roller 45 can be changed by rotating the adjusting screw sleeve 62, thereby increasing or decreasing the extrusion inclination amplitude of the vertical side plate portion 41 of the metal composite plate 25, and at the same time, the compression spring 64 can ensure that the adjusting screw sleeve 62 and the central screw 61 can be effectively locked after rotation, thereby improving the effect of flanging the metal composite plate 25.

[0100] Furthermore, the outer flanging pressing roller 46 is also installed on the upper outer flanging bracket 44 through a horizontal adjustment structure; therefore, the internal structure of the outer flanging pressing roller 46 is the same as the structure of the outer flanging extrusion roller 45, and an adjusting screw sleeve 62 is also rotatably installed in the outer flanging pressing roller 46, and the adjusting screw sleeve 62 is also rotatably installed on another center screw 61, and the outer flanging pressing roller 46 and the adjusting screw sleeve 62 are also rotatably connected through a rotating bearing 65, so that the outer flanging pressing roller 46 can rotate stably, and at the same time, the outer flanging pressing roller 46 can also move axially along the center screw 61.

[0101] The conveying device is a belt conveying device. A belt conveying wheel 24 for driving a conveying belt 23 for conveying is fixedly mounted on the machine base 1. A conveying motor is arranged on the belt conveying wheel 24, so that the belt conveying wheel 24 cooperates with the pressing roller group 7 to effectively convey.

[0102] The above-described embodiments are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Various modifications and alterations to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A method for automatic milling and flanging of a metal composite plate, characterized in that: The following steps are involved: S1. Provide an automatic milling and flanging machine, comprising a machine base, on which a conveying device for conveying a metal composite plate is arranged, and on which a pressing device for pressing the metal composite plate is also arranged above the conveying device, and the pressing device comprises a guide column fixed on the machine base, on which a pressing seat is vertically lifted and lowered, and on which a plurality of pressing roller groups are rotatably mounted, and a conveying channel for facilitating the passage of the metal composite plate is formed between the pressing roller group and the conveying surface of the conveying device, and a pressing seat lifting and adjusting mechanism for adjusting the height of the pressing seat is arranged on the machine base, and a milling device for milling the edge of the metal composite plate, a lower flanging device for flanging the edge plate portion of the metal composite plate upward to form a vertical edge plate portion, an inner flanging device for flanging the vertical edge plate portion inwardly, and an outer flanging device for flanging the vertical edge plate portion outwardly are sequentially arranged on the machine base along the conveying direction of the metal composite plate; The edge milling device comprises a first edge milling mechanism installed on a machine base and located at one side of the metal composite plate, the first edge milling mechanism comprises a first edge milling base installed on the machine base, a first edge milling lifting seat is vertically lifted and lowered on the first edge milling base, a first edge milling height adjustment mechanism for adjusting the height of the first edge milling lifting seat is arranged on the first edge milling base, a first edge milling tool driven to rotate by a first edge milling power head is fixedly installed on the first edge milling lifting seat, the first edge milling tool rotates around a vertical rotation center line, and the first edge milling tool contacts the upper part of the edge of the metal composite plate; The lower flanging device comprises a lower flanging frame fixed on the machine base and located on the outer side of the composite plate, a plurality of lower mounting plates are arranged on the lower flanging frame, a lower flanging roller seat is fixedly mounted on each lower mounting plate, a lower flanging roller is rotatably mounted on each lower flanging roller seat, the central axis of the upstream lower flanging roller at the most upstream is arranged horizontally, the central axis of the downstream lower flanging roller at the most downstream is arranged vertically, and the central axis of the middle lower flanging roller between the upstream lower flanging roller and the downstream lower flanging roller gradually increases in accordance with the intersection angle between the conveying direction of the composite plate and the horizontal plane; The inner flanging device comprises an inner flanging bracket which is laterally slidably mounted on the machine base and is located outside the composite plate, the machine base is provided with an inner flanging transverse adjustment mechanism for laterally adjusting the inner flanging bracket, and the inner flanging bracket is provided with an inner flanging roller group for conveniently pressing the vertical side plate portion of the composite plate inward; The outer flanging device comprises a lower outer flanging bracket which is laterally slidably mounted on the machine base and located at the outer side of the composite plate, and the machine base is provided with an outer flanging lateral adjustment mechanism for laterally adjusting the lower outer flanging bracket, and at least two lower positioning rollers are rotatably mounted on the lower outer flanging bracket, and the central axis of the lower positioning roller is vertically arranged, and the upper outer flanging bracket is installed on the pressing seat through the upper outer flanging vertical adjustment mechanism, and at least one horizontally arranged outer flanging extrusion roller and at least one horizontally arranged outer flanging pressing roller are rotatably mounted on the upper outer flanging bracket, and at least two lower positioning rollers are respectively matched with the outer flanging extrusion roller and the outer flanging pressing roller, and the outer end of the outer flanging extrusion roller is provided with a conical extrusion portion which extrudes the vertical edge plate portion from the inside to the outside, and the outer flanging pressing roller is located downstream of the outer flanging extrusion roller, and the outer flanging pressing roller extrudes the vertical edge plate portion which turns outward from top to bottom to make it horizontal; S2. Preparation work before starting the automatic milling and flanging machine: The milling device, the inner flanging device and the outer flanging device are adjusted according to the process of the metal composite plate; the height of the first milling lifting seat is adjusted by the first milling height adjustment mechanism to control the milling depth of the first milling tool; when the inner flanging process is required, the upper outer flanging bracket is slid upward to avoid the vertical edge plate portion by the upper outer flanging vertical adjustment mechanism; when the outer flanging process is required, the inner flanging bracket is adjusted to slide outward horizontally to avoid the vertical edge plate portion by the inner flanging horizontal adjustment mechanism; S3, starting the automatic milling and flanging machine, and the metal composite plate runs in the conveying channel between the pressing roller group and the conveying device; S4, the front end of the edge of the metal composite plate contacts the first edge milling tool and is milled during the conveying process, the upper metal plate and the core plate of the edge of the metal composite plate are milled away and the lower metal plate of the edge of the metal composite plate is retained; S5, the lower metal plate at the edge of the metal composite plate passes through the upstream lower flanging roller, the middle lower flanging roller and the downstream lower flanging roller in sequence and is extruded, bent and flanged upward to form a vertical edge plate portion; S6. When the inner flanging process is performed, the vertical side plate portion of the metal composite plate is in contact with the inner flanging roller group and extruded to wrap the edge of the metal composite plate inwardly; when the outer flanging process is performed, the vertical side plate portion of the metal composite plate is squeezed by the conical extrusion portion of the outer flanging extrusion roller and folded outward at the upper end surface of the corresponding lower positioning roller, and the outward-turned vertical side plate portion is squeezed by the outer flanging pressing roller to form a horizontal outward-turned portion.

2. The automatic milling and flanging method of a metal composite plate according to claim 1, characterized in that: The method is performed with two edge milling operations. The first edge milling operation removes the upper metal plate of the metal composite plate. The second edge milling operation removes the core plate of the metal composite plate.

3. The automatic milling and flanging method of a metal composite plate according to claim 2, characterized in that: In the method, a second milling mechanism is used to perform a second milling, and the second milling mechanism uses a second milling cutter rotating around a horizontal rotation center line to mill away the core layer plate.

4. The automatic milling and flanging method of a metal composite plate according to claim 3, characterized in that: The number of the first edge milling mechanism and the second edge milling mechanism are both two sets, and when one set is in use, the other set is kept as a standby.

5. The automatic milling and flanging method of a metal composite plate according to claim 4, characterized in that: The horizontal position of the outer flanging extrusion roller is adjustable. By changing the horizontal position of the outer flanging extrusion roller, the extrusion contact position between the conical extrusion portion and the vertical edge plate portion is changed, thereby adjusting the outer flanging angle.

6. The automatic milling and flanging method of a metal composite plate according to claim 5, characterized in that: The height of the lower positioning roller is adjustable, and the upper end surface of the lower positioning roller matched with the outer flanging extrusion roller is higher than the upper end surface of the lower positioning roller matched with the outer flanging pressing roller.

7. The automatic milling and flanging method of a metal composite plate according to claim 3, characterized in that: In the milling step of the method, the width of the core layer plate milled by the second milling is smaller than the width of the upper metal plate milled by the first milling. At this time, part of the core layer plate is still exposed at the edge of the metal composite plate, and the exposed core layer plate of the metal composite plate is wrapped during the inner flanging.

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