Stretch bending machine for door and window profile machining

Abstract

The invention relates to a stretch bending machine for door and window profile machining, and belongs to the technical field of door and window profile machining. The stretch bending machine comprises a workbench, two swing arms are hinged to the bottom of the workbench, first hydraulic cylinders are hinged to the swing arms, the ends, away from the swing arms, of the first hydraulic cylinders are also hinged, and the two swing arms are oppositely arranged; a second hydraulic cylinder is installed on the swing arm, the second hydraulic cylinder is connected with a first clamping assembly used for clamping the end of a profile, a driving assembly is installed on the workbench, an overturning assembly is installed on the driving assembly, a second clamping assembly is installed on the overturning assembly, and a positioning assembly is installed on one side of the workbench. The device has the effects that automatic conveying, positioning, stretch bending and material taking of profiles are achieved, the production efficiency is improved, and the product machining precision is improved.

Description

Technical Field

[0001] This application relates to the technical field of door and window profile processing, and particularly to a stretch bending machine for door and window profile processing. Background Art

[0002] A stretch bending machine is a device used for stretch bending processing of metal profiles, pipes or plates. It is mainly used to bend straight profiles into the required arc or complex curve shapes by combining tensile force and bending force. It is widely used in fields such as aerospace, automobile manufacturing, building structures, and door and window processing, especially in occasions where high-precision bending and forming are required.

[0003] In the production and processing of door and window profiles, traditional stretch bending processing usually relies on manual handling of profiles. The profiles are placed on the workbench for positioning, and then the stretch bending machine completes the bending and forming. After processing, the profiles need to be manually carried to the storage area or the next process again. During the process of manually carrying the profiles to the workbench, due to human factors, the placement position and direction of the profiles may have errors, thus affecting the stretch bending accuracy. And because the profiles are usually long and heavy, workers need to carry the profiles frequently, which not only increases the labor intensity but also reduces the production efficiency. Summary of the Invention

[0004] In order to achieve automatic conveying, positioning, stretch bending and material taking of profiles, improve production efficiency and product processing accuracy, this application provides a stretch bending machine for door and window profile processing.

[0005] The stretch bending machine for door and window profile processing provided by this application adopts the following technical solutions: A stretch bending machine for door and window profile processing includes a workbench. Two swing arms are hinged at the bottom of the workbench. The swing arms are hinged with a first hydraulic cylinder. The same hinged setting is also provided at the end of the first hydraulic cylinder away from the swing arm. The two swing arms are arranged oppositely. A second hydraulic cylinder is installed on the swing arm. The second hydraulic cylinder is connected with a first clamping assembly for clamping the end of the profile. A driving assembly is installed on the workbench. A flipping assembly is installed on the driving assembly. A second clamping assembly is installed on the flipping assembly. A positioning assembly is installed on one side of the workbench; The driving assembly is used to drive the flipping assembly and the second clamping assembly to move along the X-axis direction and the Y-axis direction. The flipping assembly is used to control the second clamping assembly to flip in a direction away from the swing arm. The positioning assembly is used to control that when the profile is conveyed to the workbench, the central axes in the length direction of the profiles are all in the same straight line direction.

[0006] By adopting the above technical solution, the profile is conveyed by a conveyor belt. The profile first passes through the positioning component, and then the driving component drives the flipping component and the second clamping component to move in the direction close to the positioning component (i.e., the X-axis direction), so that the second clamping component clamps the profile. The positioning component releases the limit, and then the driving component drives the flipping component and the second clamping component to reset, so that the second clamping component drags the profile to move onto the workbench. Then the positioning component positions the profile again, the second clamping component releases, the driving component drives the flipping component and the second clamping component to move in the direction close to the positioning component again, and then the second clamping component clamps the profile again. The positioning component releases the limit again, and the second clamping component continues to drive the profile to move onto the workbench. After repeating the above operations multiple times, the profile is completely transported onto the workbench and is facing the mold.

[0007] Then the driving component drives the flipping component, the second clamping component and the profile to move in the direction close to the template (i.e., the Y-axis direction), so that the profile fits the template. Then the first hydraulic cylinder drives the swing arm to rotate, so that the central axes of the two swing arms are on the same straight line. Then the second hydraulic cylinder drives the first clamping component to approach the profile, and the first clamping component clamps the profile. Then the first hydraulic cylinder drives the swing arm to swing again to bend the profile.

[0008] After the bending is completed, the driving component drives the flipping component and the second clamping component to approach the mold and clamp the profile. The first clamping component releases the clamping state. The driving component drives the profile away from the mold. Then the flipping component starts, so that the profile flips upward, and other clamping and transporting equipment (such as an OHT vehicle) clamps both ends of the profile from above the workbench and transports it away. It realizes the automatic transportation and bending of the profile, improves the production efficiency, and can adapt to profiles of different lengths and specifications, and is suitable for the processing requirements of various door and window profiles.

[0009] The positioning component has two functions. The first is that when processing profiles of the same batch with the same size, the direction of the driving component along the Y-axis transportation is certain. Therefore, when the profile moves onto the second clamping component, the relative position between the profile and the second clamping component always remains the same, so as to ensure that after the profile moves along the Y-axis direction to the set position, the profile exactly fits the mold. The second is that during the process of the second clamping component releasing, moving and clamping again, the positioning component can also fix the profile, prevent the profile from deviating, ensure that the profile is accurately aligned with the mold, realize the accurate positioning of the profile, and thus improve the forming accuracy.

[0010] Optionally, the driving assembly includes a Y-direction moving seat, which is driven by a first servo driving unit installed in the workbench. A plurality of X-direction moving seats are slidably connected to the Y-direction moving seat and are synchronously driven by a second servo driving unit installed on the Y-direction moving seat. Each X-direction moving seat is provided with a flipping assembly. The workbench is provided with an activity through groove for the flipping assembly and the second clamping assembly to extend out of the workbench and move on the workbench.

[0011] By adopting the above technical solution, the second servo driving unit drives the X-direction moving seat to move, so that the second clamping assembly and the flipping assembly approach / away from the positioning assembly. Cooperating with the second clamping assembly and the positioning assembly, the profile is transported to the workbench. The first servo driving unit drives the Y-direction moving seat, the X-direction moving seat, the flipping assembly and the second clamping assembly to move in the direction of approaching / away from the mold, so as to drive the profile to move and fit with the mold.

[0012] Optionally, the flipping assembly includes a lifting seat. A third hydraulic cylinder is installed on the X-direction moving seat and is connected to the lifting seat. A fourth hydraulic cylinder is installed on the lifting seat. The fourth hydraulic cylinder is connected with a sliding block. The sliding block is rotatably connected with a rotating shaft. The rotating shaft is fixedly connected with a flipping plate. A guiding inclined groove is formed in the side wall of the lifting seat. The rotating shaft is located in the guiding inclined groove. The peripheral surface of the rotating shaft contacts the inner wall of the guiding groove. The guiding inclined groove is inclined downward in the direction away from the fourth hydraulic cylinder.

[0013] By adopting the above technical solution, after the profile is bent and the driving assembly is reset, the third hydraulic cylinder drives the lifting seat to rise, so that the lifting seat and the second clamping assembly are both located above the workbench. Then the fourth hydraulic cylinder pushes the sliding block to move, and under the guiding action of the guiding inclined groove, the rotating shaft and the flipping plate rotate 90°, so that the two end faces of the profile are vertically upward. Then the OHT cart moves above the profile and clamps both ends of the profile. The second clamping assembly releases the clamping action, and the OHT cart transports the profile away.

[0014] After the profile is bent, it is directly flipped to the vertical state. The clamping device of the OHT cart does not need to be designed with a long lead screw / cylinder / hydraulic cylinder to lower to the position of the profile, so that the OHT cart can directly clamp after a short descent without waiting for the lifting device to slowly descend to the height of the workbench, thereby accelerating the material taking rhythm and improving the logistics efficiency of the production line.

[0015] Moreover, after the profile is flipped, its two ends are vertically upward, enabling the OHT cart to clamp at the position where the center of gravity of the profile is balanced, reducing the influence of lateral force on the shape of the profile, improving the handling quality, and reducing the damage of the profile during handling.

[0016] The function of the third hydraulic cylinder lies in two points. The first point is to prevent the second clamping assembly, the turning plate and the profile from colliding with the workbench during the turning process, avoiding damage.

[0017] The second point is that when processing profiles with a longer length, when the profile is in the position facing the mold, one end of the profile will still be located at the positioning assembly. Therefore, when the profile needs to move towards the mold, the third hydraulic cylinder can drive the profile to rise, so that the profile is located above the positioning assembly, enabling the profile to cross the positioning assembly and then fall onto the workbench, and then continue to move towards the mold, so that the profile can adapt to profiles of more lengths and is applicable to the processing requirements of more door and window profiles.

[0018] Optionally, a support plate is installed on the lifting seat. When the turning plate is in a horizontal state, one end of the turning plate close to the fourth hydraulic cylinder is supported on the support plate.

[0019] By adopting the above technical solution, the support plate plays a supporting role for the turning plate, avoiding the situation that the turning plate and the rotating shaft are deformed due to the long-term overhanging state of the turning plate, and improving the service life of the turning assembly.

[0020] Optionally, the first clamping assembly includes a clamping seat and two first cylinders. The clamping seat is installed on the piston rod of the second hydraulic cylinder. The clamping seat is provided with a plug-in groove, and the two first cylinders are installed in the plug-in groove. The two first cylinders are arranged oppositely, and flexible jaws are installed on both of the first cylinders.

[0021] By adopting the above technical solution, the swing arm deflects to make the clamping seat face the end of the profile, and then the second hydraulic cylinder drives the clamping seat to move towards the profile, so that the end of the profile is inserted into the plug-in groove. Then, the first cylinder pushes the flexible jaws to clamp the profile, realizing the clamping of both ends of the profile. The flexible jaws can be used for profiles of different shapes, improving the clamping stability, reducing the indentation during the clamping process, protecting the surface of the profile, and reducing damage.

[0022] Optionally, the second clamping assembly includes two second cylinders. The two second cylinders are arranged along the Y-axis direction. An upper clamping plate is installed on one second cylinder, and a lower clamping plate is installed on the other second cylinder. The upper clamping plate and the lower clamping plate are arranged oppositely.

[0023] By adopting the above technical solution, the two second cylinders move towards each other, causing the lower clamping plate and the upper clamping plate to approach each other and clamp the profile. During the process of transporting the profile to the workbench, the upper clamping plate can be separated from the profile, and the lower clamping plate remains flush with the workbench surface, providing stable support for the profile during transportation. And when the profile fits the mold, the upper clamping plate and the lower clamping plate can be synchronously lifted to raise the profile and align it with the first clamping assembly.

[0024] Optionally, the positioning assembly includes a support table and two third cylinders. The two third cylinders are respectively located on one side of the support table. One end of each third cylinder is hinged to the support table, and the other end of the third cylinder is hinged to a first swing rod. A second swing rod is also hinged to the support table. The first swing rod is a bent rod. The straight section of the first swing rod is hinged to the support table, and the straight section of the first swing rod is parallel to the second swing rod. The bent section of the second swing rod is hinged to the third cylinder. The first swing rod and the second swing rod are jointly hinged to a push plate.

[0025] By adopting the above technical solution, when the profile is transported to the support table, the two third cylinders are started simultaneously. The third cylinders push the first swing rod to deflect, and the second swing rod deflects synchronously with the first swing rod, causing the two push plates to synchronously move towards the central axis of the length direction of the support table, thereby enabling the two push plates to jointly clamp the profile and making the central axis of the length direction of the profile and the central axis of the length direction of the support table located in the same vertical plane, realizing the position adjustment and clamping function of the profile.

[0026] Optionally, a plurality of rolling wheels are rotatably connected to the push plate along its length direction, and a plurality of rotating rollers are rotatably connected to the support table along its length direction.

[0027] By adopting the above technical solution, the design of the rolling wheels and the rotating rollers can reduce the wear of the profile during the transfer process.

[0028] Optionally, a sliding seat is slidably connected to the swing arm. A third servo drive unit is installed on the swing arm and is used to drive the sliding seat to move along the length direction of the sliding arm. Hanging plates are respectively hinged to the top of the second hydraulic cylinder and the top of the clamping seat, and the two hanging plates are hinged to each other.

[0029] By adopting the above technical solution, the third servo drive unit drives the sliding seat to move, which can increase the adjustment range between the two first clamping assemblies, thereby adapting to profiles of more lengths.

[0030] Optionally, a plurality of mounting holes are provided on the workbench, and the mold is bolted to the workbench through the plurality of mounting holes. A heat dissipation fan is installed inside the workbench, and the heat dissipation fan is connected to a ventilation pipe, and the ventilation pipe extends out from one side of the workbench.

[0031] By adopting the above technical solution, the cooling fan cooperates with the ventilation pipe and the mounting hole to dissipate heat from the mold and the profile, thereby reducing the heat accumulation of the profile and preventing the coating from discoloring, peeling off, or the oxide layer from being damaged, and the cross-section of the profile from collapsing.

[0032] In summary, the present application includes at least one of the following beneficial technical effects: 1. Automatically transport and bend the profile, improve production efficiency, and can adapt to profiles of different lengths and specifications, meeting the processing requirements of various door and window profiles; 2. The positioning component keeps the relative position of profiles of the same size and the second clamping component always the same. During the process of the second clamping component loosening, moving, and clamping again, the positioning component can also fix the profile, preventing the profile from being displaced, ensuring that the profile is accurately aligned with the mold, achieving accurate positioning of the profile, and thus improving the forming accuracy; 3. After the profile is bent, it is directly flipped to the vertical state. The clamping device of the OHT trolley does not need to design a long lead screw / cylinder / hydraulic cylinder to lower to the position of the profile, enabling the OHT trolley to directly clamp after a short descent without waiting for the lifting device to slowly lower to the workbench height, thereby accelerating the material taking rhythm and improving the logistics efficiency of the production line; 4. Moreover, after the profile is flipped, both ends are vertically upward, enabling the OHT trolley to clamp at the position where the center of gravity of the profile is balanced, reducing the influence of lateral force on the shape of the profile, improving the handling quality, and reducing damage to the profile during handling; 5. The cooling fan cooperates with the ventilation pipe and the mounting hole to dissipate heat from the mold and the profile, thereby reducing the heat accumulation of the profile and preventing the coating from discoloring, peeling off, or the oxide layer from being damaged, and the cross-section of the profile from collapsing. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application.

[0034] Figure 2 is a schematic diagram of an embodiment of the present application for showing the structures of the driving component, the flipping component, and the second clamping component.

[0035] Figure 3 is a schematic diagram of an embodiment of the present application for showing the structure of the first clamping component.

[0036] Figure 4 is Figure 1 an enlarged schematic diagram of part A in

[0037] Figure 5 is a schematic diagram of an embodiment of the present application for showing the structure of the rolling wheel.

[0038] Description of the reference numerals: 1. Workbench; 11. Mounting hole; 12. Cooling fan; 13. Ventilation pipe; 14. Movable through groove; 21. Swing arm; 22. First hydraulic cylinder; 23. Third servo drive unit; 24. Sliding seat; 25. Second hydraulic cylinder; 26. Hanging plate; 3. First clamping assembly; 31. Clamping seat; 311. Insertion slot; 32. First cylinder; 33. Flexible jaw; 4. Drive assembly; 41. Y-direction moving seat; 42. First servo drive unit; 43. Second servo drive unit; 44. X-direction moving seat; 5. Flipping assembly; 51. Lifting seat; 511. Guide inclined slot; 52. Third hydraulic cylinder; 53. Fourth hydraulic cylinder; 54. Sliding block; 55. Rotating shaft; 56. Flipping plate; 57. Support plate; 6. Second clamping assembly; 61. Second cylinder; 62. Upper clamping plate; 63. Lower clamping plate; 7. Positioning assembly; 71. Support table; 72. Third cylinder; 73. First swing rod; 74. Second swing rod; 75. Pushing plate; 76. Rolling wheel; 77. Rotating roller. Detailed implementation manners

[0039] The following further elaborates on this application Figures 1-5 in conjunction with the attached drawings.

[0040] The embodiment of this application discloses a bending machine for processing door and window profiles.

[0041] As Figure 1 , the bending machine for processing door and window profiles includes a workbench 1. Two swing arms 21 are hinged to the bottom of the workbench 1. The two swing arms 21 are arranged on each side adjacent to the workbench 1. The two swing arms 21 are arranged oppositely. On each opposite side of the two swing arms 21, a first hydraulic cylinder 22 is hinged, and the first hydraulic cylinder 22 is hinged to the middle of the swing arm 21. The same hinged setting is also adopted for the end of the first hydraulic cylinder 22 far from the swing arm 21. The end of the first hydraulic cylinder 22 far from the swing arm 21 can be hinged to the ground, or an extension plate can be provided at the bottom of the workbench 1, and the first hydraulic cylinder 22 is hinged to the extension plate.

[0042] A third servo drive unit 23 is installed on the swing arm 21. A sliding seat 24 is installed on the third servo drive unit 23. The sliding seat 24 is slidably connected to the swing arm 21. The third servo drive unit 23 includes a motor and a lead screw. The lead screw is rotatably connected to the swing arm 21 and is arranged along the length direction of the swing arm 21.

[0043] A second hydraulic cylinder 25 is installed on the sliding seat 24. The piston rod of the second hydraulic cylinder 25 is connected to a first clamping assembly 3 for clamping the end of the profile. The first clamping assembly 3 is cantilevered. The top of the cylinder body of the second hydraulic cylinder 25 and the top of the first clamping assembly 3 are both hinged with a hanging plate 26. The two hanging plates 26 are inclined and close to each other and are hinged.

[0044] The interior of the workbench 1 has a cavity structure. A number of mounting holes 11 are provided on the workbench 1, and the mold is bolted to the workbench 1 through the number of mounting holes 11. A heat dissipation fan 12 is installed inside the workbench 1, and the exhaust end of the heat dissipation fan 12 is connected to a ventilation pipe 13, and the ventilation pipe 13 extends out from one side of the workbench.

[0045] An activity through groove 14 is also provided on the top surface of the workbench 1. The activity through groove 14 communicates with the internal cavity of the workbench 1, and the activity through groove 14 is arranged farther away from the first hydraulic cylinder 22 compared with the mounting holes 11.

[0046] A driving assembly 4 is installed inside the workbench 1. A flipping assembly 5 is installed on the driving assembly 4, a second clamping assembly 6 is installed on the flipping assembly 5, and a positioning assembly 7 is installed on one side of the workbench 1; The driving assembly 4 is used to drive the flipping assembly 5 and the second clamping assembly 6 to move along the X-axis direction and the Y-axis direction; The flipping assembly 5 is used to control the second clamping assembly 6 to flip 90° in the direction away from the swing arm 21, and can control the second clamping assembly 6 to move along the Z-axis direction. The flipping assembly 5 and the second clamping assembly 6 move and flip within the area of the activity through groove 14; The positioning assembly 7 is used to control that when the profile is conveyed onto the workbench 1, the central axes of the length directions of the profiles are all in the same straight line direction.

[0047] The profile is conveyed by a conveyor belt. The profile first passes through the positioning assembly 7, and then the driving assembly 4 drives the flipping assembly 5 and the second clamping assembly 6 to move in the direction close to the positioning assembly 7 (i.e., the X-axis direction), so that the second clamping assembly 6 clamps the profile. The positioning assembly 7 releases the limit, and then the driving assembly 4 drives the flipping assembly 5 and the second clamping assembly 6 to reset, so that the second clamping assembly 6 drags the profile to move onto the workbench 1. Then the positioning assembly 7 positions the profile again, the second clamping assembly 6 releases, the driving assembly 4 drives the flipping assembly 5 and the second clamping assembly 6 to move in the direction close to the positioning assembly 7 again, and then the second clamping assembly 6 clamps the profile again. The positioning assembly 7 releases the limit again, and the second clamping assembly 6 continues to drive the profile to move onto the workbench 1. After repeating the above operations multiple times, the profile is completely dragged onto the workbench 1 and is facing the mold.

[0048] Then the driving assembly 4 drives the flipping assembly 5, the second clamping assembly 6 and the profile to move in the direction close to the template (i.e., the Y-axis direction), so that the profile fits the template. Then the first hydraulic cylinder 22 drives the swing arm 21 to rotate, so that the central axes of the two swing arms 21 are on the same straight line. Then the second hydraulic cylinder 25 drives the first clamping assembly 3 to approach the profile, and the first clamping assembly 3 clamps the profile. Then the first hydraulic cylinder 22 drives the swing arm 21 to swing again to bend the profile.

[0049] After stretch bending is completed, the driving assembly 4 drives the flipping assembly 5 and the second clamping assembly 6 to approach the mold and clamp the profile. The first clamping assembly 3 releases the clamping state. The driving assembly 4 drives the profile away from the mold. Then, the flipping assembly 5 is activated to flip the profile upward, and the two ends of the profile are clamped and transported away from above the workbench 1 by other clamping and transporting equipment (such as an OHT vehicle). The automatic transportation and stretch bending of the profile are realized, the production efficiency is improved, and profiles of different lengths and specifications can be adapted, which is suitable for the processing requirements of various door and window profiles.

[0050] For example Figure 2 , the driving assembly 4 includes a Y-direction moving seat 41, and the Y-direction moving seat 41 is driven by a first servo driving unit 42. Both the Y-direction moving seat 41 and the first servo driving unit 42 are located inside the workbench 1. The first servo driving unit 42 includes a motor and a lead screw. The lead screw is rotatably connected inside the workbench 1, the motor is installed inside the workbench 1, the lead screw is arranged along the Y-axis direction, the motor is connected to the lead screw, and the Y-direction moving seat 41 is slidably arranged inside the workbench 1 and is threadedly connected to the lead screw.

[0051] A second servo driving unit 43 is installed on the Y-direction moving seat 41. The second servo driving unit 43 includes a lead screw and a motor. The lead screw is arranged along the length direction of the Y-direction moving seat 41. The lead screw is rotatably connected to the Y-direction moving seat 41. The length direction of the Y-direction moving seat 41 is perpendicular to the lead screw of the first servo driving unit 42. The motor is installed on the Y-direction moving seat 41 and is connected to the lead screw. Three X-direction moving seats 44 are slidably connected to the Y-direction moving seat 41. The three X-direction moving seats 44 are arranged at equal intervals. The three X-direction moving seats 44 are all threadedly connected to the lead screw of the second servo driving unit 43. A flipping assembly 5 is installed on each X-direction moving seat 44.

[0052] The second servo driving unit 43 drives the X-direction moving seat 44 to move, so that the second clamping assembly 6 and the flipping assembly 5 approach / away from the positioning assembly 7. Cooperating with the second clamping assembly 6 and the positioning assembly 7, the profile is transported to the workbench 1. The first servo driving unit 42 drives the Y-direction moving seat 41, the X-direction moving seat 44, the flipping assembly 5 and the second clamping assembly 6 to move in the direction of approaching / away from the mold, so as to drive the profile to move and fit with the mold.

[0053] For example Figure 2, the flipping assembly 5 includes a lifting seat 51. Two third hydraulic cylinders 52 are installed on the X-direction moving seat 44. The two third hydraulic cylinders 52 are jointly connected to the lifting seat 51. A fourth hydraulic cylinder 53 is installed on the lifting seat 51. The cylinder body of the fourth hydraulic cylinder 53 is closer to the mold than its piston rod. The fourth hydraulic cylinder 53 is connected with a sliding block 54. The sliding block 54 is an L-shaped block. The sliding block 54 is arranged and slidably connected on the lifting seat 51. A rotating shaft 55 is rotatably connected to the top of the sliding block 54. The rotating shaft 55 is fixedly connected with a flipping plate 56. A guiding inclined groove 511 is formed in the side wall of the lifting seat 51. The rotating shaft 55 is located in the guiding inclined groove 511. The peripheral surface of the rotating shaft 55 contacts the upper inner wall and the lower inner wall of the guiding inclined groove 511. The two end walls of the guiding inclined groove 511 are arc-shaped inner walls. When the lifting seat 51 is in a horizontal state, the peripheral surface of the rotating shaft 55 fits with the end wall of the guiding inclined groove 511. The guiding inclined groove 511 is inclined downward in a direction away from the fourth hydraulic cylinder 53. A supporting plate 57 is also installed on the lifting seat 51. When the flipping plate 56 is in a horizontal state, one end of the flipping plate 56 close to the fourth hydraulic cylinder 53 is supported on the supporting plate 57.

[0054] After the profile stretch-bending is completed and the driving assembly 4 is reset, the third hydraulic cylinder 52 drives the lifting seat 51 to rise, so that the lifting seat 51 and the second clamping assembly 6 are both located above the workbench 1. Then, the fourth hydraulic cylinder 53 pushes the sliding block 54 to move, and under the guiding action of the guiding inclined groove 511, the rotating shaft 55 and the flipping plate 56 rotate 90°, so that the two end faces of the profile are vertically upward. Then, the OHT cart moves above the profile and clamps both ends of the profile, and the second clamping assembly 6 releases the clamping action, and the OHT cart transports the profile away.

[0055] After the profile is stretch-bent, it is directly flipped to a vertical state. The clamping device of the OHT cart does not need to design a long lead screw / cylinder / hydraulic cylinder to lower to the position of the profile, so that the OHT cart can directly clamp after a short descent without waiting for the lifting device to slowly descend to the height of the workbench 1, thereby accelerating the material taking rhythm and improving the logistics efficiency of the production line.

[0056] Moreover, after the profile is flipped, its two ends are vertically upward, so that the OHT cart can clamp at the position where the center of gravity of the profile is balanced, reducing the influence of lateral force on the shape of the profile, improving the handling quality, and reducing the damage of the profile during handling.

[0057] The function of the third hydraulic cylinder 52 is in two aspects. The first aspect is to prevent the second clamping assembly 6, the flipping plate 56 and the profile from colliding with the workbench 1 during the flipping process and avoid causing damage.

[0058] Second, when processing profiles with a relatively long length, when the profile is in the position facing the mold, one end of the profile will still be located at the positioning component 7. Therefore, when the profile needs to move towards the mold, the third hydraulic cylinder 52 can drive the profile to rise, so that the profile is located above the positioning component 7, enabling the profile to cross over the positioning component 7 and then fall onto the workbench 1, and then continue to move towards the mold, so that the profile can adapt to profiles of more lengths and is suitable for the processing requirements of more door and window profiles.

[0059] Such as Figure 3 , the first clamping component 3 includes a clamping seat 31 and two first cylinders 32. The clamping seat 31 is installed on the piston rod of the second hydraulic cylinder 25. The hanging plate 26 is hinged to the top of the clamping seat 31. A plug-in slot 311 is provided at one end of the clamping seat 31 away from the second hydraulic cylinder 25. The two first cylinders 32 are installed in the plug-in slot 311. The two first cylinders 32 are arranged oppositely and are respectively located on the two inner side walls of the plug-in slot 311. Flexible jaws 33 are installed on both first cylinders 32.

[0060] Such as Figure 2 , the second clamping component 6 includes two second cylinders 61. The two second cylinders 61 are both installed on the turning plate 56. The two second cylinders 61 are arranged along the Y-axis direction. An upper clamping plate 62 is installed on one second cylinder 61, and a lower clamping plate 63 is installed on the other second cylinder 61. The upper clamping plate 62 and the lower clamping plate 63 are arranged oppositely.

[0061] Such as Figure 4 and Figure 5 , the positioning component 7 includes a support platform 71 and two third cylinders 72. The support platform 71 is installed on one side of the workbench 1, and the support platform 71 is located at one end of the workbench 1 away from the swing arm 21. The two third cylinders 72 are respectively located on one side of the support platform 71. One end of the third cylinder 72 is hinged to the side wall of the support platform 71. The other end of the third cylinder 72 is hinged to a first swing rod 73. A second swing rod 74 is also hinged on the support platform 71. The first swing rod 73 is a bent rod. The straight section of the first swing rod 73 is hinged to the support platform 71, and the straight section of the first swing rod 73 is parallel to the second swing rod 74. The bent section of the second swing rod 74 is hinged to the third cylinder 72. A push plate 75 is jointly hinged by the first swing rod 73 and the second swing rod 74. A plurality of rolling wheels 76 are rotatably connected to the push plate 75 along its length direction. A plurality of rotating rollers 77 are rotatably connected to the support platform 71 along its length direction.

[0062] After the profile is transported to the support table 71, two third cylinders 72 are started simultaneously. The third cylinders push the first swing rod 73 to deflect. The second swing rod 74 deflects synchronously with the first swing rod 73, causing the two push plates 75 to move synchronously towards the central axis in the length direction of the support table 71. As a result, the two push plates 75 jointly clamp the profile, and the central axis in the length direction of the profile and the central axis in the length direction of the support table 71 are located in the same vertical plane, realizing the position adjustment and clamping of the profile.

[0063] The implementation principle of the embodiment of this application is as follows: The profile is transported through the conveyor belt. The profile first passes through the positioning component 7, and then the driving component 4 drives the flipping component 5 and the second clamping component 6 to move towards the positioning component 7 (i.e., the X-axis direction), so that the second clamping component 6 clamps the profile. The positioning component 7 releases the limit, and then the driving component 4 drives the flipping component 5 and the second clamping component 6 to reset, so that the second clamping component 6 drags the profile to move onto the workbench 1. Then the positioning component 7 positions the profile again, the second clamping component 6 releases, the driving component 4 drives the flipping component 5 and the second clamping component 6 to move towards the positioning component 7 again, and then the second clamping component 6 clamps the profile again. The positioning component 7 releases the limit again, and the second clamping component 6 continues to drive the profile to move onto the workbench 1. After repeating the above operations multiple times, the profile is completely transported onto the workbench 1 and is facing the mold.

[0064] Then the driving component 4 drives the flipping component 5, the second clamping component 6 and the profile to move towards the template (i.e., the Y-axis direction), so that the profile fits the template. Then the first hydraulic cylinder 22 drives the swing arm 21 to rotate, so that the central axes of the two swing arms 21 are on the same straight line. Then the second hydraulic cylinder 25 drives the first clamping component 3 to approach the profile, and the first clamping component 3 clamps the profile. Then the first hydraulic cylinder 22 drives the swing arm 21 to swing again to bend the profile.

[0065] After the bending is completed, the driving component 4 drives the flipping component 5 and the second clamping component 6 to approach the mold and clamp the profile. The first clamping component 3 releases the clamping state. The driving component 4 drives the profile away from the mold. Then the flipping component 5 is started, so that the profile is turned upwards, and the two ends of the profile are clamped and transported away from above the workbench 1 by other clamping and transfer equipment (such as an OHT vehicle). The automatic transportation and bending of the profile are realized, the production efficiency is improved, and profiles of different lengths and specifications can be adapted, which is suitable for the processing requirements of various door and window profiles.

[0066] The positioning component 7 has two functions. First, when processing the profiles with the same size in the same batch, the driving component 4 transports along the Y-axis in a certain direction. Therefore, when the profile moves to the second clamping component 6, the relative position between the profile and the second clamping component 6 always remains the same, so as to ensure that the profile can move along the Y-axis direction to the set position and just fit with the mold. Second, during the process of the second clamping component 6 loosening, moving and clamping again, the positioning component 7 can also fix the profile, avoid the profile from being displaced, ensure that the profile is accurately aligned with the mold, realize the accurate positioning of the profile, and thus improve the forming accuracy.

[0067] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A stretch bending machine for processing door and window profiles, characterized in that: The invention comprises a workbench (1), wherein two swing arms (21) are hingedly connected at the bottom of the workbench (1), wherein the swing arms (21) are hingedly connected to a first hydraulic cylinder (22), wherein the first hydraulic cylinder (22) is hingedly arranged at one end away from the swing arms (21), and wherein the two swing arms (21) are arranged opposite to each other, wherein a second hydraulic cylinder (25) is installed on the swing arms (21), wherein the second hydraulic cylinder (25) is connected to a first clamping assembly (3) for clamping the end of a profile, wherein a driving assembly (4) is installed on the driving assembly (4), wherein a flipping assembly (5) is installed on the flipping assembly (5), and wherein a second clamping assembly (6) is installed on one side of the workbench (1); The driving assembly (4) is used to drive the flipping assembly (5) and the second clamping assembly (6) to move along the X-axis direction and the Y-axis direction; the flipping assembly (5) is used to control the second clamping assembly (6) to flip in a direction away from the swing arm (21); and the positioning assembly (7) is used to control the profile to be transported to the workbench (1) so that the central axis of the profile in the longitudinal direction is in the same straight line direction.

2. The stretch bending machine for door and window profile processing according to claim 1, characterized in that: The driving assembly (4) comprises a Y-direction moving seat (41), the Y-direction moving seat (41) is driven by a first servo driving unit (42), the first servo driving unit (42) is installed in the workbench (1), a plurality of X-direction moving seats (44) are slidably connected to the Y-direction moving seat (41), the plurality of X-direction moving seats (44) are synchronously driven by a second servo driving unit (43), the second servo driving unit (43) is installed on the Y-direction moving seat (41), each of the X-direction moving seats (44) is installed with a flipping assembly (5), and the workbench (1) is provided with a movable through slot (14) for the flipping assembly (5) and the second clamping assembly (6) to extend out of the workbench (1) and move on the workbench (1).

3. The stretch bending machine for door and window profile processing according to claim 2 is characterized in that: The flip assembly (5) comprises a lifting seat (51), a third hydraulic cylinder (52) is installed on the X-direction movable seat (44), the third hydraulic cylinder (52) is connected to the lifting seat (51), a fourth hydraulic cylinder (53) is installed on the lifting seat (51), the fourth hydraulic cylinder (53) is connected to a sliding block (54), the sliding block (54) is rotatably connected to a rotating shaft (55), the rotating shaft (55) is fixedly connected to a flip plate (56), a side wall of the lifting seat (51) is provided with a guide inclined groove (511), the rotating shaft (55) is located in the guide inclined groove (511), the circumferential surface of the rotating shaft (55) is in contact with the inner wall of the guide inclined groove (511), and the guide inclined groove (511) is arranged to be inclined downward in a direction away from the fourth hydraulic cylinder (53).

4. The stretch bending machine for door and window profile processing according to claim 3 is characterized in that: A support plate (57) is installed on the lifting seat (51), and when the flip plate (56) is in a horizontal state, one end of the flip plate (56) close to the fourth hydraulic cylinder (53) is supported on the support plate (57).

5. The stretch bending machine for door and window profile processing according to claim 1, characterized in that: The first clamping assembly (3) comprises a clamping seat (31) and two first cylinders (32); the clamping seat (31) is mounted on the piston rod of the second hydraulic cylinder (25); the clamping seat (31) is provided with a plug-in slot (311); the two first cylinders (32) are mounted in the plug-in slot (311); the two first cylinders (32) are arranged opposite to each other, and the two first cylinders (32) are both equipped with flexible clamps (32).

6. The stretch bending machine for door and window profile processing according to claim 1, characterized in that: The second clamping assembly (6) comprises two second cylinders (61), the two second cylinders (61) are arranged along the Y-axis direction, one of the second cylinders (61) is installed with an upper clamping plate (62), and the other second cylinder (61) is installed with a lower clamping plate (63), and the upper clamping plate (62) and the lower clamping plate (63) are arranged opposite to each other.

7. The stretch bending machine for door and window profile processing according to claim 1, characterized in that: The positioning assembly (7) comprises a support platform (71) and two third cylinders (72), wherein the two third cylinders (72) are respectively located on one side of the support platform (71), one end of the third cylinder (72) is hinged to the support platform (71), and the other end of the third cylinder (72) is hinged to a first swing rod (73), and a second swing rod (74) is also hinged to the support platform (71), wherein the first swing rod (73) is a bent rod, wherein a straight section of the first swing rod (73) is hinged to the support platform (71), and the straight section of the first swing rod (73) is parallel to the second swing rod (74), and a bent section of the second swing rod (74) is hinged to the third cylinder (72), and the first swing rod (73) and the second swing rod (74) are hinged to a push plate (75) together.

8. The stretch bending machine for door and window profile processing according to claim 7, characterized in that: The push plate (75) is rotatably connected to a plurality of rolling wheels (76) along its length direction, and the support platform (71) is rotatably connected to a plurality of rotating rollers (77) along its length direction.

9. The stretch bending machine for door and window profile processing according to claim 5, characterized in that: A sliding seat (24) is slidably connected to the swing arm (21), and a third servo drive unit (23) is installed on the swing arm (21). The third servo drive unit (23) is used to drive the sliding seat (24) to move along the length direction of the swing arm (21). The top of the second hydraulic cylinder (25) and the top of the clamping seat (31) are both hinged with hanging plates (26), and the two hanging plates (26) are hinged to each other.

10. The stretch bending machine for door and window profile processing according to claim 1, characterized in that: A plurality of mounting holes (11) are provided on the workbench (1), and the mold is fixed to the workbench (1) by bolts through the plurality of mounting holes (11). A heat dissipation fan (12) is installed in the workbench (1), and the heat dissipation fan (12) is connected to a ventilation pipe (13), and the ventilation pipe (13) extends from one side of the workbench (1).

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