A door and window frame profile cold-bending forming system and process

Abstract

The present invention relates to the technical field of profile forming equipment, and proposes a cold-bending forming system and process for door and window frame profiles, comprising a feed rack, a frame, and a bending mechanism, a straightening mechanism, and a sawing mechanism sequentially arranged on the frame. The bending mechanism comprises an embossing roller, a primary bending part, a secondary bending part, and a snap-fit ​​mechanism. The embossing roller is rotatably arranged on the frame, and each end of the embossing roller has a plurality of protrusions. The primary bending part is rotatably arranged on the frame, and the primary bending part is used to fold the ends of the aluminum plate. The secondary bending part is rotatably arranged on the frame, and the secondary bending part is used to pre-bend and fold the middle of the aluminum plate. The snap-fit ​​mechanism is rotatably arranged on the frame, and the ends of the snap-fit ​​mechanism respectively abut against the outer side of the folded aluminum plate. The above technical solution solves the problem of the lack of dedicated integrated bending equipment in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of profile forming equipment, and in particular to a door and window frame profile cold-bending forming system and process. Background Art

[0002] At present, the profiles for screen doors and windows used in buildings are mainly aluminum sheet profiles, followed by color-coated sheet profiles. The production of aluminum sheet screen door and window profiles consumes a huge amount of aluminum resources. In the smelting and extrusion molding production, energy consumption and environmental pollution are both difficult problems facing environmental protection. Although color-coated sheet screen door and window frame profiles are low-cost, they are neglected by the market due to poor rust resistance and unrefined processing technology. When producing aluminum sheet screen doors and windows, direct extrusion molding or aluminum sheet bending molding is generally adopted. Extrusion molding requires high-temperature pouring, cooling molding and other processes, and the production cycle is relatively long. However, the interfaces of the bent aluminum sheet profiles are prone to relative sliding, affecting the stability of the screen door and window frames. There is also a lack of dedicated integrated bending equipment. Summary of the Invention

[0003] The present invention provides a door and window frame profile cold bending forming system and process, which solves the problem of lack of dedicated integrated bending equipment in the related art.

[0004] The technical solutions of the present invention are as follows:

[0005] A door and window frame profile cold bending forming system includes a feeding rack, a frame, and a bending mechanism, a straightening mechanism and a sawing mechanism sequentially arranged on the frame. The bending mechanism includes

[0006] An embossing roller is rotatably mounted on the frame, and has a plurality of protrusions at both ends of the embossing roller;

[0007] A primary bending part is rotatably arranged on the frame, and the primary bending part is used to fold the two ends of the aluminum plate;

[0008] A secondary bending part is rotatably arranged on the frame, and the secondary bending part is used to pre-bend and fold the middle part of the aluminum plate;

[0009] The buckling mechanism is rotatably arranged on the frame, and two ends of the buckling mechanism are respectively in contact with the outer sides of the folded aluminum plate.

[0010] As a further technical solution, the primary bending part includes several groups of primary bending rollers, the primary bending rollers are rotatably arranged on the frame, and the several groups of primary bending rollers are distributed in parallel and at intervals. The primary bending rollers include

[0011] an upper bending roller, rotatably disposed on the frame, wherein both ends of the upper bending roller are provided with a diameter-changing step and a first groove, respectively, and the chamfer angles between the diameter-changing steps and the first groove, which are distributed in parallel and spaced apart, and the upper bending roller are gradually increased;

[0012] The lower bending roller is rotatably arranged on the frame, and the surface shape of the lower bending roller is concave-convex matched with the upper bending roller.

[0013] As a further technical solution, the secondary bending part includes several groups of secondary bending rollers, the secondary bending rollers are rotatably arranged on the frame, and the several groups of secondary bending rollers are distributed in parallel and at intervals.

[0014] An upper pressing roller is rotatably arranged on the frame, and both ends of the upper pressing roller have a frustum, and the angle of the frustum gradually increases along the forward direction of the aluminum plate profile;

[0015] The lower pressing roller is rotatably arranged on the frame, and the surface shape of the lower pressing roller is concave-convex matched with the upper bending roller.

[0016] As a further technical solution, the buckling mechanism includes

[0017] a first guide roller, rotatably disposed on the frame;

[0018] a first engaging roller, rotatably disposed on the frame, wherein the upper end of the first engaging roller has a first boss, and the first guide roller and the first engaging roller are respectively located on both sides of the aluminum plate and are arranged opposite to each other;

[0019] a second guide roller, rotatably disposed on the frame, the second guide roller being located on one side of the first engaging roller;

[0020] a second engaging roller, rotatably disposed on the frame, the second engaging roller having a second boss at its upper end, the second guide roller being disposed opposite to the second engaging roller;

[0021] a third guide roller, rotatably disposed on the frame, the third guide roller being located on one side of the second engaging roller;

[0022] The third fastening roller is rotatably arranged on the frame, the third fastening roller has a third boss, and the third fastening roller is arranged opposite to the third guide roller.

[0023] As a further technical solution, the straightening mechanism includes

[0024] a first straightening roller, slidably disposed on the frame, the first straightening roller abutting against the upper surface and side surfaces of the fastened aluminum plate profile;

[0025] There are three groups of second straightening rollers, and the three groups of second straightening rollers are arranged on the frame at intervals;

[0026] a third straightening roller, rotatably arranged on the frame, the third straightening roller having a second groove, the second groove abutting against the aluminum plate;

[0027] an embossing plate, rotatably disposed on the frame, wherein the embossing plate is located above the second straightening rollers of the third group;

[0028] The fourth boss is arranged on the third group of second straightening rollers.

[0029] As a further technical solution, the sawing mechanism includes

[0030] A moving mechanism is provided on the frame, wherein the moving direction of the moving mechanism is parallel to the forward direction of the aluminum plate profile;

[0031] The cutting mechanism is arranged on the moving mechanism.

[0032] A cold-bend forming process for door and window frame profiles, using a cold-bend forming system for door and window frame profiles, comprises the following steps:

[0033] S1. Feeding: The rolled aluminum sheet is fed into the bending mechanism via the feeding rack;

[0034] S2. Primary Bending: After the aluminum sheet passes through the embossing rollers, dense patterns are embossed on both sides. After the aluminum sheet passes through the upper and lower bending rollers, the diameter-changing step folds one side of the aluminum sheet upward, forming a groove on the other side that matches the first groove. When the aluminum sheet passes through the final set of primary bending rollers, the aluminum sheet near the diameter-changing step abuts the cross-section of the upper bending roller, forming an upward flange.

[0035] S3. Secondary Bending: When the aluminum sheet enters the secondary bending rollers, the middle portion of the aluminum sheet contacts the upper and lower pressing rollers and the frustum, and the middle portion of the aluminum sheet is bent into three parts.

[0036] S4. Snap-fit: When the bent aluminum sheet passes through the snap-fit ​​mechanism, the first snap-fit ​​roller abuts the sheet, and the first boss abuts the groove formed after bending, snapping the aluminum sheet into place on the groove side. The aluminum sheet then abuts the side of the sheet near the step. The second boss presses the side of the sheet near the step into place above the groove, with the upper flange facing downward. The third boss then bends the sheet into the groove, snapping the patterns on both sides of the sheet together.

[0037] S5. Straightening: The bent and shaped profile passes through the first, second, and third straightening rollers, which successively abut against the side and top and bottom surfaces of the profile to achieve straightening. As the profile passes through the embossing disc, indentations are formed on the outer upper surface of the grooves, further tightening the profile.

[0038] S6. Cutting: The moving mechanism drives the cutting mechanism to move to a designated position, thus completing the cutting of the profile to a fixed length.

[0039] The working principle and beneficial effects of the present invention are:

[0040] In the present invention, in order to solve the problem of lack of dedicated integrated bending equipment in the related art, a feeding rack is first set up to transport the rolled aluminum plates, and a bending mechanism, a straightening mechanism and a sawing mechanism are sequentially set up on the rack. When bending, patterns can first be embossed on both sides of the aluminum plate by an embossing roller, so that the patterns on both sides bite together after bending and buckling, avoiding sliding after the profile is formed, thereby improving the stability of the profile. The primary bending part can bend the two ends of the aluminum plate, which can be buckled together and bitten through the patterns after bending. The secondary bending part bends the middle part of the aluminum plate, and the middle part of the aluminum plate forms a U-shaped structure after passing through the secondary bending part. After the two ends of the aluminum plate are buckled together, they are located at the opening of the U-shaped structure, so that the entire profile forms a closed support structure, thereby improving the stability of the profile. The entire forming process is integrated, convenient and fast, thereby improving the production efficiency of profile bending. When bending the profile, the rolled aluminum plate is first placed on the feed rack, and the feed rack transports the aluminum plate to the bending mechanism. Patterns are embossed on both sides of the aluminum plate when passing through the embossing roller. Then the primary bending part begins to bend the two sides of the aluminum plate in turn, and the two sides of the aluminum plate are bent into the shape of steps and grooves respectively. Then the secondary bending part bends the middle part of the aluminum plate, which is the main support part of the profile. In order to avoid the secondary bending affecting the bending shape of both sides of the aluminum plate, the width of the secondary bending part is smaller than the width of the primary bending part. After the bending is completed, the fastening mechanism abuts against the bent profile and fastens the bent parts on both sides of the aluminum plate together. The embossed patterns bite together after fastening, and the formed profile is straightened and repaired by the straightening mechanism. Then the profile is cut into the required length by the sawing mechanism, which solves the problem of lack of dedicated integrated bending equipment in the related technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] Figure 1 It is a schematic diagram of the structure of the present invention;

[0043] Figure 2 For the present invention Figure 1 A in the middle is an enlarged structural diagram;

[0044] Figure 3 This is a schematic diagram of the structure of a single bending roller of the present invention;

[0045] Figure 4 This is a schematic diagram of the secondary bending roller structure of the present invention;

[0046] Figure 5 This is a structural diagram of the straightening mechanism of the present invention;

[0047] Figure 6 Schematic diagram of the structure of the second fastening roller of the present invention;

[0048] Figure 7 For the present invention Figure 1 The enlarged structural diagram at B in the middle;

[0049] Figure 8 For the present invention Figure 1 The enlarged structural diagram at C in the middle;

[0050] Figure 9 This is the main view of the door and window frame profile;

[0051] Figure 10 This is the right view of the door and window frame profile;

[0052] In the figure: 1. feeding rack, 2. frame, 3. bending mechanism, 4. straightening mechanism, 5. sawing mechanism, 6. embossing roller, 7. primary bending part, 8. secondary bending part, 9. fastening mechanism, 10. primary bending roller, 11. upper bending roller, 12. diameter reducing step, 13. first groove, 14. lower bending roller, 15. secondary bending roller, 16. upper pressure roller, 17. cone, 18. lower pressure roller, 19. first guide roller, 20. first fastening roller, 21. first boss, 22. second guide roller, 23. second fastening roller, 24. second boss, 25. third guide roller, 26. third fastening roller, 27. third boss, 28. first straightening roller, 29. second straightening roller, 30. third straightening roller, 31. second groove, 32. embossing disk, 33. moving mechanism, 34. cutting mechanism, 35. fourth boss. DETAILED DESCRIPTION

[0053] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0054] like Figures 1 to 10 As shown, this embodiment proposes

[0055] A door and window frame profile cold bending forming system includes a feeding rack 1, a frame 2, and a bending mechanism 3, a straightening mechanism 4 and a sawing mechanism 5 arranged on the frame 2 in sequence. The bending mechanism 3 includes

[0056] The embossing roller 6 is rotatably mounted on the frame 2, and has a plurality of protrusions at both ends of the embossing roller 6;

[0057] A primary bending part 7 is rotatably mounted on the frame 2 and is used to fold both ends of the aluminum plate;

[0058] The secondary bending part 8 is rotatably arranged on the frame 2, and is used for pre-bending and folding the middle part of the aluminum plate;

[0059] The buckling mechanism 9 is rotatably arranged on the frame 2, and both ends of the buckling mechanism 9 are respectively in contact with the outer side of the folded aluminum plate.

[0060] In this embodiment, in order to solve the problem of lack of dedicated integrated bending equipment in the related art, a feeding rack 1 is first set up to transport the rolled aluminum plate, and a bending mechanism 3, a straightening mechanism 4 and a sawing mechanism 5 are sequentially set up on the frame 2. When bending, the embossing roller 6 can first emboss the patterns on both sides of the aluminum plate, so that the patterns on both sides bite together after bending and buckling, avoiding sliding after the profile is formed, thereby improving the stability of the profile. The primary bending part 7 can bend the two ends of the aluminum plate, and the two ends of the aluminum plate can be buckled together and bitten through the patterns after bending. The secondary bending part 8 bends the middle part of the aluminum plate, and the middle part of the aluminum plate forms a U-shaped structure after passing through the secondary bending part 8. After the two ends of the aluminum plate are buckled together, they are located at the opening of the U-shaped structure, so that the entire profile forms a closed support structure, thereby improving the stability of the profile. The entire forming process is integrated, convenient and fast, thereby improving the production efficiency of profile bending.

[0061] Specifically, when bending the profile, the rolled aluminum plate is first placed on the feed rack 1, and the feed rack 1 transports the aluminum plate to the bending mechanism 3. When the aluminum plate passes through the embossing roller 6, a pattern is embossed under the action of the protrusions on both sides of the aluminum plate. Then the primary bending part 7 begins to bend the two sides of the aluminum plate in turn, and the two sides of the aluminum plate are bent into the shape of steps and grooves respectively. Then the secondary bending part 8 bends the middle part of the aluminum plate, which is the main support part of the profile. In order to avoid the secondary bending affecting the bending shape of both sides of the aluminum plate, the width of the secondary bending part 8 is smaller than the width of the primary bending part 7. After the bending is completed, the fastening mechanism 9 abuts against the bent profile and fastens the bent parts on both sides of the aluminum plate together. The patterns embossed after fastening are bitten together, and the formed profile is straightened and repaired by the straightening mechanism 4, and then the profile is cut into the required length by the sawing mechanism 5, which solves the problem of lack of dedicated integrated bending equipment in the related technology.

[0062] Furthermore, the primary bending part 7 includes several groups of primary bending rollers 10, which are rotatably arranged on the frame 2, and the several groups of primary bending rollers 10 are distributed in parallel and spaced apart. The primary bending rollers 10 include

[0063] The upper bending roller 11 is rotatably mounted on the frame 2. Both ends of the upper bending roller 11 are provided with a diameter-changing step 12 and a first groove 13. The chamfer angles between the plurality of parallel and spaced diameter-changing steps 12 and the first groove 13 and the upper bending roller 11 gradually increase.

[0064] The lower bending roller 14 is rotatably arranged on the frame 2 , and the surface shape of the lower bending roller 14 matches the concave-convex shape of the upper bending roller 11 .

[0065] In this embodiment, when a bending operation is performed, when the aluminum plate passes between the upper bending roller 11 and the lower bending roller 14, the two ends of the aluminum plate are bent into the shape of a diameter-changing step 12 and a first groove 13, wherein the chamfers between the diameter-changing step 12 and the first groove 13 and the upper bending roller 11 gradually increase, gradually completing the bending of the two ends of the aluminum plate. The chamfer angle on the upper bending roller 11 ranges from 0° to 90° and gradually increases. When the aluminum plate passes through the last upper bending roller 11, a step and a groove that are adapted to the shape of the first groove 13 are formed on both sides of the aluminum plate. The length of the diameter-changing step 12 of the last upper bending roller 11 is smaller than that of the other upper bending rollers 11, and the outer diameter of the side opposite to the lower bending roller 14 at the corresponding position is enlarged, so that an upper flange is formed on one side of the step of the aluminum plate, so that when buckled, the upper flange is folded into the inside of the groove, thereby improving the stability of the profile.

[0066] Furthermore, the secondary bending part 8 includes several groups of secondary bending rollers 15, which are rotatably arranged on the frame 2, and the several groups of secondary bending rollers 15 are distributed in parallel and at intervals. The secondary bending rollers 15 include

[0067] The upper pressing roller 16 is rotatably mounted on the frame 2. Both ends of the upper pressing roller 16 have a frustum 17. The angle of the frustum 17 gradually increases along the forward direction of the aluminum plate profile.

[0068] The lower pressing roller 18 is rotatably arranged on the frame 2 , and the surface shape of the lower pressing roller 18 matches the concave-convex shape of the upper bending roller 11 .

[0069] In this embodiment, similar to the primary bending process, as the aluminum sheet passes through the secondary bending member 8, the frustums 17 at both ends of the upper pressing roller 16 cooperate with the lower pressing roller 18 to ultimately bend the center of the aluminum sheet into a U-shape. As the angle of the frustum 17 increases, the center of the aluminum sheet gradually bends from a flat surface into a U-shape, preventing a single large-angle bend from affecting the strength of the aluminum sheet and the mechanical properties of the profile.

[0070] Furthermore, the fastening mechanism 9 includes

[0071] A first guide roller 19 is rotatably mounted on the frame 2;

[0072] The first engaging roller 20 is rotatably mounted on the frame 2. The upper end of the first engaging roller 20 has a first boss 21. The first guide roller 19 and the first engaging roller 20 are respectively located on both sides of the aluminum plate and are arranged opposite to each other.

[0073] A second guide roller 22 is rotatably mounted on the frame 2 and is located on one side of the first engaging roller 20;

[0074] The second engaging roller 23 is rotatably mounted on the frame 2. The upper end of the second engaging roller 23 has a second boss 24. The second guide roller 22 is disposed opposite to the second engaging roller 23.

[0075] A third guide roller 25 is rotatably mounted on the frame 2 and is located on one side of the second engaging roller 23;

[0076] The third engaging roller 26 is rotatably disposed on the frame 2 . The third engaging roller 26 has a third boss 27 . The third engaging roller 26 is disposed opposite to the third guide roller 25 .

[0077] In this embodiment, when the bent aluminum sheet passes through the fastening mechanism 9, the distance between the first guide roller 19 and the aluminum sheet is greater than the distance between the first fastening roller 20 and the aluminum sheet. The side of the aluminum sheet where the groove is formed is first fastened into place under the action of the first boss 21. The second guide roller 22 is of the same shape as the first fastening roller 20 and abuts the groove of the aluminum sheet. The second fastening roller 23 is closer to the aluminum sheet than the first guide roller 19. Under the action of the second boss 24, the stepped side of the aluminum sheet abuts the groove. At this point, the upper flange edge formed during the first bend faces downward, and is subsequently bent inward of the groove under the action of the third boss 27 of the third fastening roller 26, so that the patterns on both sides of the aluminum sheet interlock.

[0078] Furthermore, the straightening mechanism 4 includes

[0079] The first straightening roller 28 is slidably arranged on the frame 2, and the first straightening roller 28 abuts against the upper surface and side surfaces of the aluminum plate profile after buckling;

[0080] There are three groups of second straightening rollers 29, and the three groups of second straightening rollers 29 are arranged on the frame 2 at intervals;

[0081] A third straightening roller 30 is rotatably mounted on the frame 2 and has a second groove 31 thereon. The second groove 31 abuts against the aluminum plate.

[0082] The embossing plate 32 is rotatably mounted on the frame 2 and is located above the third set of second straightening rollers 29;

[0083] The fourth boss 35 is provided on the third group of second straightening rollers 29 , and the fourth boss 35 abuts against the groove of the aluminum plate profile.

[0084] In this embodiment, after the aluminum sheets are bent and fastened together, they are first straightened on the top and sides of the profile by first straightening rollers 28. The profile is then further straightened by three sets of second straightening rollers 29 and third straightening rollers 30. The top and bottom surfaces of the profile can be positioned within the second groove 31, thereby straightening the entire outer surface of the profile. Finally, the upper surface of the profile groove is embossed by an embossing plate 32. A fourth boss 35 is positioned within the groove of the aluminum sheet profile. The embossing plate 32 presses the three layers of aluminum sheet in the groove of the aluminum sheet profile toward the fourth boss 35, locking the embossed patterns on the edges of the aluminum sheets together. Under the action of the embossing plate 32, the patterns change from being closely attached to each other to interlocking, further fastening the profile together.

[0085] Furthermore, the sawing mechanism 5 includes

[0086] The moving mechanism 33 is provided on the frame 2, and the moving direction of the moving mechanism 33 is parallel to the forward direction of the aluminum plate profile;

[0087] The cutting mechanism 34 is arranged on the moving mechanism 33 .

[0088] In this embodiment, the moving mechanism 33 can adjust the position of the cutting mechanism 34 so that the cutting mechanism 34 can complete the cutting of profiles of different lengths. The entire device can complete the entire bending, buckling, straightening and cutting process after loading the material once, which is convenient to operate.

[0089] A cold-bend forming process for door and window frame profiles, using a cold-bend forming system for door and window frame profiles, comprises the following steps:

[0090] S1. Feeding: The rolled aluminum sheet is fed into the bending mechanism 3 via the feeding rack 1.

[0091] S2. Primary Bending: After the aluminum sheet passes through embossing rollers 6, dense patterns are embossed on both sides. After the sheet passes through upper bending rollers 11 and lower bending rollers 14, the reducing step 12 folds one side of the sheet upward, forming a groove on the other side that matches the first groove 13. When the sheet passes through the final set of primary bending rollers 10, the side of the sheet near the reducing step 12 abuts against the cross-section of the upper bending rollers 11, forming an upward flange.

[0092] S3. Secondary Bending: When the aluminum sheet enters the secondary bending rollers 15, the center of the sheet contacts the upper pressing roller 16, the lower pressing roller 18, and the cone 17, and is bent into three parts.

[0093] S4. Snap-fit: When the bent aluminum sheet passes through snap-fit ​​mechanism 9, the first snap-fit ​​roller 20 abuts the sheet, and the first boss 21 abuts the groove formed after bending, snapping the aluminum sheet into place on the groove side. The aluminum sheet then abuts the side of the sheet near the step 12 against the second snap-fit ​​roller 23. Under the action of the second boss 24, the side of the sheet near the step 12 fits above the groove. The upper flange edge now faces downward and is then bent into the groove under the action of the third boss 27, snapping the patterns on both sides of the sheet together.

[0094] S5. Straightening: After bending and shaping, the profile passes through the first straightening roller 28, the second straightening roller 29, and the third straightening roller 30, which successively abut against the side and top and bottom surfaces of the profile to complete the straightening. As the profile passes through the embossing plate 32, the outer surface of the groove is embossed with a dent, further fastening the profile together.

[0095] S6. Cutting: The moving mechanism 33 drives the cutting mechanism 34 to move to a designated position, completing the cutting of the profile to a fixed length.

[0096] In this embodiment, a cold-bending forming process for door and window frame profiles is introduced. Before bending, the embossing roller 6 is first used to emboss both sides of the aluminum plate so that the aluminum plate can be tightly snapped together after bending and snapping. After embossing, the aluminum plate is first bent once so that steps and grooves that can be snapped together are formed on both sides of the aluminum plate. Then, the middle part of the aluminum plate is bent by the secondary bending part 8 to form the supporting part of the profile. Then, the bent aluminum plates are snapped together by the snapping mechanism 9, straightened by the straightening mechanism 4, and finally cut by the sawing mechanism 5, which solves the problem of lack of dedicated integrated bending equipment in the related art.

[0097] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A door and window frame profile cold roll forming system, characterized in that: It comprises a feeding rack (1), a frame (2), and a bending mechanism (3), a straightening mechanism (4), and a sawing mechanism (5) which are sequentially arranged on the frame (2), wherein the bending mechanism (3) comprises An embossing roller (6) is rotatably arranged on the frame (2), and both ends of the embossing roller (6) respectively have a plurality of protrusions; A primary bending part (7) is rotatably arranged on the frame (2), and the primary bending part (7) is used to fold the two ends of the aluminum plate; A secondary bending part (8) is rotatably arranged on the frame (2), and the secondary bending part (8) is used to pre-bend and fold the middle part of the aluminum plate; A buckling mechanism (9) is rotatably arranged on the frame (2), with both ends of the buckling mechanism (9) respectively abutting against the outer side of the folded aluminum plate; The primary bending part (7) includes a plurality of groups of primary bending rollers (10), the primary bending rollers (10) are rotatably arranged on the frame (2), the plurality of groups of primary bending rollers (10) are distributed in parallel and at intervals, and the primary bending rollers (10) include An upper bending roller (11) is rotatably arranged on the frame (2), and both ends of the upper bending roller (11) are provided with a diameter-changing step (12) and a first groove (13), and the chamfer angles between the plurality of parallel and spaced-apart diameter-changing steps (12) and the first groove (13) and the upper bending roller (11) gradually increase; A lower bending roller (14) is rotatably arranged on the frame (2), and the surface shape of the lower bending roller (14) is concave-convex matched with the upper bending roller (11); The secondary bending part (8) includes a plurality of groups of secondary bending rollers (15), the secondary bending rollers (15) are rotatably arranged on the frame (2), the plurality of groups of secondary bending rollers (15) are distributed in parallel and at intervals, and the secondary bending rollers (15) include An upper pressing roller (16) is rotatably arranged on the frame (2), and both ends of the upper pressing roller (16) have a frustum (17), and the angle of the frustum (17) gradually increases along the forward direction of the aluminum plate profile; A lower pressing roller (18) is rotatably mounted on the frame (2), wherein the surface shape of the lower pressing roller (18) matches the concave-convex shape of the upper pressing roller (16); The buckling mechanism (9) includes A first guide roller (19) rotatably mounted on the frame (2); a first engaging roller (20) rotatably arranged on the frame (2), wherein the upper end of the first engaging roller (20) has a first boss (21), and the first guide roller (19) and the first engaging roller (20) are respectively located on both sides of the aluminum plate and are arranged opposite to each other; a second guide roller (22) rotatably disposed on the frame (2), the second guide roller (22) being located on one side of the first engaging roller (20); a second engaging roller (23) rotatably arranged on the frame (2), the second engaging roller (23) having a second boss (24) at its upper end, and the second guide roller (22) being arranged opposite to the second engaging roller (23); A third guide roller (25) is rotatably mounted on the frame (2), wherein the third guide roller (25) is located on one side of the second engaging roller (23); A third engaging roller (26) is rotatably arranged on the frame (2), the third engaging roller (26) having a third boss (27), and the third engaging roller (26) is arranged opposite to the third guide roller (25).

2. A door and window frame profile cold roll forming system according to claim 1, characterized in that: The straightening mechanism (4) comprises A first straightening roller (28) is slidably arranged on the frame (2), wherein the first straightening roller (28) abuts against the upper surface and side surfaces of the aluminum plate profile after being fastened; There are three groups of second straightening rollers (29), and the three groups of second straightening rollers (29) are arranged on the frame (2) at intervals; A third straightening roller (30) is rotatably arranged on the frame (2), the third straightening roller (30) having a second groove (31), the second groove (31) abutting against the aluminum plate profile; an embossing plate (32) rotatably mounted on the frame (2), the embossing plate (32) being located above the second straightening rollers (29) of the third group; The fourth boss (35) is provided on the third group of the second straightening rollers (29).

3. A door and window frame profile cold roll forming system according to claim 2, characterized in that: The sawing mechanism (5) comprises A moving mechanism (33) is arranged on the frame (2), and the moving direction of the moving mechanism (33) is parallel to the forward direction of the aluminum plate profile; The cutting mechanism (34) is arranged on the moving mechanism (33).

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