Aluminum door and window corner connector steel sheet assembly line

Abstract

An aluminum door and window corner connector steel sheet assembly line belongs to the technical field of aluminum door and window assembly and comprises a feeding device, a first transfer device and an assembly device which are sequentially arranged, the assembly line further comprises a pre-assembly device and a second transfer device, the pre-assembly device is arranged between the first transfer device and the assembly device and comprises a corner connector mechanism and a steel sheet mechanism, and the second transfer device is arranged between the corner connector mechanism and the steel sheet mechanism. The second transfer device is arranged between the pre-assembling device and the assembling device. Through the arranged pre-corner-assembling mechanism, automatic pre-corner-assembling can be achieved after a worker completes section bar feeding, the worker does not need to manually place corner connectors and steel sheets before transferring the section bars to the assembling device, that is, the corner connectors are inserted into cavities of the section bars one by one, and the assembling efficiency is improved. The problems that time and labor are wasted, the labor intensity is high and the assembling precision is difficult to guarantee due to manual placement are solved, and meanwhile, the problems that tools such as a hammer are used in the corner connector inserting process, and the sectional materials are prone to being damaged are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum door and window assembly, in particular to an assembly line for aluminum door and window corner code steel sheets. Background Art

[0002] Door and window glasses are usually fixed by framing with aluminum profiles around. Each section of the profiles on the four sides needs to be spliced and fixed to each other. A 90-degree right angle is formed at the connection between each side. The function of the corner code is to connect and fix adjacent sections of profiles, which plays a very important role in the overall strength and firmness of the door and window.

[0003] Using corner codes to assemble door and window profiles is a common method for assembling door and window frames. First, insert the corner codes into the cavities at both ends of two opposite profiles of the door and window, and then insert the other two profiles without installed corner codes onto the corner codes of the previous two profiles to form a quadrilateral door and window frame. One corner code realizes the splicing and fixing at the corner of two adjacent profiles, and four corner codes can be used to assemble a quadrilateral door and window frame. In the prior art, the above entire assembly process of the door and window profiles needs to be manually operated. Workers take the profiles with corner codes one by one, insert the corner codes into the cavities of the profiles one by one, and then assemble multiple profiles. This is very time-consuming and laborious, with a large labor intensity, and it is difficult to guarantee the assembly accuracy. Tools such as hammers are often used during the process of inserting corner codes, which is likely to damage the profiles. Moreover, there is often more than one cavity in the profiles of some doors and windows. At this time, more than one corner code is required for the splicing and fixing between two profiles, and the assembly process is even more time-consuming and laborious. Summary of the Utility Model

[0004] Aiming at the problem of poor consistency of the finished products produced by the pipe cutting equipment in the prior art, the utility model provides an assembly line for aluminum door and window corner code steel sheets with high consistency of the finished products.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] An assembly line for aluminum door and window corner code steel sheets includes a first transfer device and an assembly device arranged in sequence. The assembly line further includes a pre-assembly device and a second transfer device. The pre-assembly device is arranged between the first transfer device and the assembly device. The pre-assembly device includes a corner code mechanism and a steel sheet mechanism. The second transfer device is arranged between the pre-assembly device and the assembly device. Through the provided pre-assembly angle mechanism, automatic pre-assembly of angles can be realized after the staff complete the feeding of the profiles, without the need for the staff to manually place the corner codes and steel sheets before transporting the profiles to the assembly device, that is, inserting the corner codes into the cavities of the profiles one by one, avoiding the problems of time-consuming, laborious, large labor intensity and difficult to guarantee the assembly accuracy caused by manual placement, and at the same time avoiding the problem that tools such as hammers are used during the process of inserting corner codes, which is likely to damage the profiles.

[0007] Preferably, the pre-assembly device further includes a fourth transfer mechanism. The pre-assembly device includes at least one corner code mechanism and one steel sheet mechanism, and the corner code mechanism and the steel sheet mechanism are arranged distributively in the length direction of the fourth transfer mechanism. The provided fourth transfer mechanism enables the profiles to successively complete the assembly of corner codes and steel sheets at multiple positions under the action of the fourth transfer mechanism, realizing the assembly line operation of multiple profiles entering different workstations for processing simultaneously, and improving the automation degree of the equipment.

[0008] Preferably, both the corner code mechanism and the steel sheet mechanism include a first workbench and a second workbench distributed on both sides of the fourth transfer mechanism. First positioning units are arranged on both the first workbench and the second workbench, and the first positioning units are used to abut against the side end faces in the moving direction of the profiles. A material storage unit and a material pushing unit are also arranged on both the first workbench and the second workbench. By providing the first workbench and the second workbench on both sides of the fourth transfer mechanism, the two sides of the profiles can work synchronously when placing corner codes and steel sheets, improving the working efficiency of the equipment.

[0009] Preferably, second positioning units are fixedly arranged on both the first workbench and the second workbench, and a moving unit is arranged on the first workbench and / or the second workbench. The moving unit is used to adjust the distance between the first workbench and the second workbench. By providing the second positioning units and the moving unit, the placement of corner codes and steel sheets for profiles with different lengths can be realized, improving the applicable range of the equipment.

[0010] Preferably, the material storage unit includes a right-angle limiting member and an adjusting member arranged in the vertical direction. A plurality of corner codes or steel sheets to be assembled are stacked between the right-angle limiting member and the adjusting member. The adjusting member can move to adjust the distance from the right-angle limiting member. The material pushing unit includes a material pushing cylinder and a material pushing plate. One end of the material pushing plate is connected to the piston rod of the material pushing cylinder, and the other end of the material pushing plate is used to push the lowermost corner code or steel sheet in the material storage unit into the profile. By providing the material pushing unit and the material storage unit, the corner codes and steel sheets can be pushed into the corresponding cavities when the placement of corner codes and steel sheets is required. At the same time, by providing the adjusting member, the adjusting member can be adjusted according to the sizes of different corner codes or steel sheets, so that the adjusting member and the right-angle limiting member can always exert forces on the corner codes or steel sheets simultaneously, realizing the stable placement of corner codes and steel sheets.

[0011] Preferably, nail driving units are also arranged on both the first workbench and the second workbench of the corner code mechanism. The nail driving unit includes a three-axis moving workbench and a nail driving gun, and the nail driving unit is used to fix the corner codes in the profiles. By providing the nail driving unit, nail driving and fixing can be carried out after the placement of the corner codes is completed, so that the corner codes and the profiles always maintain a preset position during the subsequent transfer of the profiles, avoiding the problem of low assembly accuracy caused by the displacement of the corner codes in the profiles.

[0012] Preferably, third positioning units are also provided on both the first workbench and the second workbench of the angle code mechanism. The third positioning unit includes a limiting plate that can reciprocate in the length direction of the profile. The limiting plate can abut against the angle code, and the pushing plate pushes the angle code to abut against the limiting plate for limiting. By providing the third positioning unit, when the angle code is pushed in, the pushing plate pushes the angle code to abut against the limiting plate for limiting, thereby realizing the stable limiting of the angle code in the profile, and also avoiding the problem of displacement of the angle code relative to the profile during further nailing.

[0013] Preferably, the assembly line further includes a feeding device. The first transfer device includes a first transfer mechanism, a second transfer mechanism, and a third transfer mechanism. One side of the first transfer mechanism is connected to the feeding device. The two ends of the second transfer mechanism are respectively connected to the first transfer mechanism and the second transfer device. The two ends of the third transfer mechanism are respectively connected to the second transfer mechanism and the pre-assembly device. By providing the first transfer mechanism, the second transfer mechanism, and the third transfer mechanism, the long-side profiles and the short-side profiles can be separated during the pre-assembly process. During the time of pre-assembling the short-side profiles, the second transfer device can transfer the long-side profiles to the assembly device, avoiding the accumulation problem of the remaining long-side profiles during the processing of the short-side profiles and improving the working efficiency of the assembly line.

[0014] Preferably, a gluing device and a drilling device are sequentially arranged after the assembly device on the assembly line. By providing the gluing device and the drilling device, the door and window frame after gluing can sequentially complete the gluing and drilling operations on the assembly line, avoiding operations such as manual line change by workers and expanding the working range of the assembly line.

[0015] As can be seen from the above technical solutions, the advantages of the present utility model are as follows: Through the provided pre-assembled corner mechanism, automatic pre-assembly of profiles can be achieved after the staff completes the feeding of profiles, eliminating the need for the staff to manually place corner codes and steel sheets before transferring the profiles to the assembly device, that is, inserting the corner codes one by one into the cavities of the profiles, avoiding the problems of time-consuming, labor-intensive, large labor intensity, and difficult to guarantee assembly accuracy in manual placement, and at the same time avoiding the problem that tools such as hammers are used in the process of inserting corner codes, which is likely to damage the profiles. Through the provided fourth transfer mechanism, the profiles can complete the assembly of corner codes and steel sheets at multiple positions in sequence under the action of the fourth transfer mechanism, realizing an assembly line operation where multiple profiles enter different workstations for simultaneous processing, improving the automation degree of the equipment. Through the first workbench and the second workbench provided on both sides of the fourth transfer mechanism, the two sides of the profile can work synchronously when placing corner codes and steel sheets, improving the working efficiency of the equipment. Through the provided second positioning unit and moving unit, the placement of corner codes and steel sheets for profiles of different lengths can be realized, improving the applicable range of the equipment. Through the provided pushing unit and storage unit, the corner codes and steel sheets can be pushed into the corresponding cavities when the placement of corner codes and steel sheets is required. At the same time, through the provided adjusting member, the adjusting member can be adjusted according to the sizes of different corner codes or steel sheets, so that the adjusting member and the right-angle limiting member can always exert forces on the corner codes or steel sheets simultaneously, realizing the stable placement of corner codes and steel sheets. Through the provided nailing unit, nailing and fixing can be carried out after the placement of corner codes is completed, so that the corner codes and the profiles always maintain a preset position during the subsequent transfer of the profiles, avoiding the problem of low assembly accuracy caused by the displacement of the corner codes in the profiles. Through the provided third positioning unit, when the corner code is pushed in, the pushing plate pushes the corner code to abut against the limiting plate for limiting, thereby realizing the stable limiting of the corner code in the profile, and also avoiding the problem of displacement of the corner code relative to the profile during further nailing. Through the provided first transfer mechanism, second transfer mechanism, and third transfer mechanism, the long-edge profiles and short-edge profiles can be separated during the pre-assembly process. During the pre-assembly of the short-edge profiles, the second transfer device can transfer the long-edge profiles to the assembly device, avoiding the problem of accumulation of the remaining long-edge profiles during the processing of the short-edge profiles, and improving the working efficiency of the assembly line. Through the provided glue injection device and drilling device, the door and window frames can complete the glue injection and drilling operations in sequence on the assembly line after the glue injection is completed, avoiding the need for manual line change and other operations by the staff, and expanding the working range of the assembly line. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a structural schematic diagram of a specific embodiment of the present utility model;

[0017] Figure 2 is a top view of a specific embodiment of the present utility model;

[0018] Figure 3 Partial structural schematic diagram of the feeding device in the specific embodiment of the present utility model;

[0019] Figure 4 Partial structural schematic diagram of the third transfer mechanism in the specific embodiment of the present utility model;

[0020] Figure 5 Structural schematic diagram of the corner code mechanism in the specific embodiment of the present utility model;

[0021] Figure 6 is Figure 5 Enlarged structural schematic diagram of part A in

[0022] Figure 7 Partial structural schematic diagram of the corner code mechanism in the specific embodiment of the present utility model.

[0023] Main reference numeral description

[0024] 1. Feeding device; 11. First horizontal moving part; 12. First vertical moving part; 13. Grabbing bracket; 14. First pneumatic gripper; 2. First transfer device; 21. First transfer mechanism; 22. Second transfer mechanism; 23. Third transfer mechanism; 231. Second horizontal moving part; 232. Second vertical moving part; 233. Rotary cylinder; 234. Second pneumatic gripper; 3. Pre-assembly device; 31. Fourth transfer mechanism; 32. Corner code mechanism; 321. First workbench; 3211. First positioning roller; 3212. Second positioning roller; 322. Second workbench; 323. Storage unit; 3231. Right-angle limiting part; 3232. Adjusting part; 324. Pushing unit; 3241. Pushing cylinder; 3242. Pushing plate; 325. Moving unit; 326. Positioning plate; 3261. Positioning notch; 327. Limiting plate; 328. Rotary clamping cylinder; 3281. Clamping plate; 329. Nailing unit; 3291. Three-axis moving workbench; 3292. Nailing gun; 33. Steel sheet mechanism; 4. Assembly device; 41. Base; 42. Moving table; 43. Lifting mechanism; 44. Limiting block; 5. Third transfer device; 6. Gluing device; 7. Fourth transfer device; 71. Link; 72. Lifting cylinder; 8. Drilling device; 9. Grabbing manipulator. Specific embodiment

[0025] In order to make the objectives, features, and advantages of the present utility model more obvious and understandable, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the specific embodiments. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of this patent.

[0026] As Figures 1 - 7 shown, in the first aspect, an assembly line for aluminum door and window corner codes and steel sheets includes a feeding device 1, a first transfer device 2, a pre-assembly device 3, a second transfer device, an assembly device 4, a third transfer device 5, a caulking device 6, a fourth transfer device 7, and a drilling device 8 arranged in sequence. The pre-assembly device 3 includes a corner code mechanism 32 and a steel sheet mechanism 33. Among them, the first transfer device 2 includes a first transfer mechanism 21, a second transfer mechanism 22, and a third transfer mechanism 23. One side of the first transfer mechanism 21 is connected to the feeding device 1. The two ends of the second transfer mechanism 22 are respectively connected to the first transfer mechanism 21 and the second transfer device. The two ends of the third transfer mechanism 23 are respectively connected to the second transfer mechanism 22 and the pre-assembly device 3. The second transfer device is a grasping robotic arm 9. With such a setting, through the first transfer mechanism 21, the second transfer mechanism 22, and the third transfer mechanism 23 provided, the long-edge profiles can be separated from the short-edge profiles during the pre-assembly process. During the time of pre-assembling the short-edge profiles, the second transfer device can transfer the long-edge profiles to the assembly device 4, avoiding the accumulation problem of the remaining long-edge profiles during the processing of the short-edge profiles, and improving the working efficiency of the assembly line. Through the pre-assembly angle mechanism provided, automatic pre-assembly of angles can be performed after the staff complete the feeding of the profiles, without the need for the staff to manually place the corner codes and steel sheets before transferring the profiles to the assembly device 4, that is, inserting the corner codes one by one into the cavities of the profiles, avoiding the problems of time-consuming, labor-intensive, large labor intensity, and difficult to guarantee the assembly accuracy of manual placement, and at the same time avoiding the problem that tools such as hammers are used during the process of inserting the corner codes, which is easy to damage the profiles.

[0027] The feeding device 1 includes a first bracket and a plurality of synchronously running conveyor belts driven by a motor on the first bracket. A first limiting roller is arranged near the first transfer mechanism 21 on the conveyor belt. A feeding mechanism is also arranged on the first bracket. The feeding mechanism includes a first horizontal moving part 11, a first vertical moving part 12 arranged on the first horizontal moving part 11, and a grasping bracket 13 arranged on the first vertical moving part 12. A plurality of first pneumatic grippers 14 are arranged on the grasping bracket 13. Among them, the first horizontal moving part 11 is a lead screw nut assembly driven by a motor in this embodiment, and the first vertical moving part 12 is a first telescopic cylinder.

[0028] In this embodiment, the first transfer mechanism 21, the second transfer mechanism 22, and the third transfer mechanism 23 all adopt a plurality of driving rollers that are synchronously operated by a motor. Among them, the first transfer mechanism 21 and the second transfer mechanism 22 are arranged in parallel in the transfer direction, and the third transfer mechanism 23 is arranged perpendicular to the second transfer mechanism 22 in the transfer direction. The third transfer mechanism 23 further includes a transfer unit, and the transfer unit includes a second bracket. A second horizontal moving part 231 that reciprocates in the length direction of the third transfer mechanism 23, a second vertical moving part 232 arranged on the second horizontal moving part 231, a rotary cylinder 233 arranged on the second vertical moving part 232, and a second pneumatic gripper 234 arranged on the rotary cylinder 233 are provided on the second bracket. Among them, the second horizontal moving part 231 is a lead screw nut assembly driven by a motor in this embodiment, and the second vertical moving part 232 is a second telescopic cylinder.

[0029] In this embodiment, the pre-assembly device 3 further includes a fourth transfer mechanism 31. The pre-assembly device 3 includes at least one corner code mechanism 32 and a steel sheet mechanism 33. The corner code mechanism 32 and the steel sheet mechanism 33 are distributed and arranged in the length direction of the fourth transfer mechanism 31. In this embodiment, they are the corner code mechanism 32, the steel sheet mechanism 33, and the corner code mechanism 32 in sequence. Among them, the fourth transfer mechanism 31 includes two conveyor belts driven by a motor. The fourth transfer mechanism 31 further includes a lifting assembly arranged below the conveyor belt. The lifting assembly can be a gear-rack lifting or a lead screw nut lifting, etc. In this embodiment, the lifting assembly adopts a gear-rack lifting drive. With such a setting, through the provided fourth transfer mechanism 31, the profiles can be successively assembled with corner codes and steel sheets at multiple positions under the action of the fourth transfer mechanism 31, realizing an assembly line operation in which multiple profiles enter different workstations for simultaneous processing, and improving the automation degree of the equipment.

[0030] In this embodiment, both the corner code mechanism 32 and the steel sheet mechanism 33 include a first workbench 321 and a second workbench 322 distributed on both sides of the fourth transfer mechanism 31. First positioning units are arranged on both the first workbench 321 and the second workbench 322. In this embodiment, the first positioning unit adopts two relatively arranged first positioning rollers 3211 and second positioning rollers 3212. The first positioning roller 3211 is fixedly arranged, and the second positioning roller 3212 can move towards the direction of the first positioning roller 3211 under the action of a cylinder so as to cooperate with the first positioning roller 3211 to position and clamp the profile in the width direction. The first positioning unit is used to abut against the side end surface in the moving direction of the profile. A material storage unit 323 and a material pushing unit 324 are also arranged on both the first workbench 321 and the second workbench 322. With such a setting, through the first workbench 321 and the second workbench 322 arranged on both sides of the fourth transfer mechanism 31, the two sides of the profile can work synchronously when placing the corner codes and steel sheets, improving the working efficiency of the equipment.

[0031] On both the first workbench 321 and the second workbench 322, a second positioning unit is also fixedly arranged. A moving unit 325 is arranged on the first workbench 321 and / or the second workbench 322. The moving unit 325 is used to adjust the distance between the first workbench 321 and the second workbench 322. In this embodiment, the first workbench 321 is fixedly arranged, and the moving unit 325 is arranged on the second workbench 322. The moving unit 325 is a lead screw-nut transmission assembly driven by a motor. The second positioning unit is a positioning plate 326. The positioning plate 326 is fixed on the first workbench 321 / second workbench 322. A positioning notch 3261 is formed on the positioning plate 326. The shape of the positioning notch 3261 matches the shape of both ends of the profile. When the second workbench 322 moves towards the first workbench 321, the positioning plate 326 on the second workbench 322 pushes the profile towards the positioning plate 326 on the first workbench 321, completing the clamping and positioning of the profile in the length direction. With such a setting, by means of the arranged second positioning unit and the moving unit 325, it is possible to place corner codes and steel sheets on profiles of different lengths, improving the applicable range of the equipment.

[0032] On both the first workbench 321 and the second workbench 322, a fourth positioning unit is also arranged. The fourth positioning unit includes a rotary clamping cylinder 328 and a clamping plate 3281. When it is necessary to fix the profile, the clamping plate 3281 can clamp and position the profile in the height direction under the action of the rotary clamping cylinder 328.

[0033] In this embodiment, the storage unit 323 includes a right-angle limiting member 3231 and an adjusting member 3232 arranged in the vertical direction. A number of corner codes or steel sheets to be assembled are stacked between the right-angle limiting member 3231 and the adjusting member 3232. The adjusting member 3232 can move to adjust the distance from the right-angle limiting member 3231. The pushing unit 324 includes a pushing cylinder 3241 and a pushing plate 3242. One end of the pushing plate 3242 is connected to the piston rod of the pushing cylinder 3241, and the other end of the pushing plate 3242 is used to push the lowermost corner code or steel sheet in the storage unit 323 into the profile. By means of the arranged pushing unit 324 and the storage unit 323, it is possible to push the corner codes and steel sheets into the corresponding cavities when corner codes and steel sheets need to be placed. At the same time, by means of the arranged adjusting member 3232, the adjusting member 3232 can be adjusted according to the sizes of different corner codes or steel sheets, so that the adjusting member 3232 and the right-angle limiting member 3231 can always exert forces on the corner codes or steel sheets simultaneously, realizing the stable placement of the corner codes and steel sheets.

[0034] In this embodiment, nailing units 329 are further provided on both the first workbench 321 and the second workbench 322 of the corner code mechanism 32. The nailing unit 329 includes a three-axis moving workbench 3291 and a nail gun 3292. The nailing unit 329 is used to fix the corner code inside the profile. By providing the nailing unit 329, nailing and fixing can be performed after the corner code is placed. Thus, during subsequent transportation of the profile, the corner code and the profile always maintain a preset position, avoiding the problem of low assembly accuracy caused by the displacement of the corner code inside the profile.

[0035] In this embodiment, third positioning units are further provided on both the first workbench 321 and the second workbench 322 of the corner code mechanism 32. The third positioning unit includes a limiting plate 327 that can reciprocate in the length direction of the profile. The limiting plate 327 can abut against the corner code. The pushing plate 3242 pushes the corner code so that the corner code abuts against the limiting plate 327 for limiting. The third positioning unit adopts a transmission method of a lead screw and nut driven by a motor. With such a setting, by providing the third positioning unit, when the corner code is pushed in, the pushing plate 3242 pushes the corner code so that the corner code abuts against the limiting plate 327 for limiting, thereby realizing stable limiting of the corner code inside the profile and also avoiding the problem of displacement of the corner code relative to the profile during further nailing.

[0036] In this embodiment, the assembly device 4 includes a base 41. Two moving platforms 42 are provided on the base 41. One of the two moving platforms 42 is fixedly arranged, and the other is connected to a moving mechanism. Under the action of the moving mechanism, the distance between the moving platforms 42 can be changed. A conveyor belt is provided on each moving platform 42. A lifting mechanism 43 is connected to the conveyor belt. Both ends of the lifting mechanism 43 are respectively connected to the moving platform 42 and the conveyor belt. A limiting block 44 is provided on the moving platform 42. The limiting block 44 is used to abut against the profile. Under the action of the moving mechanism, the profile is moved once to insert the corner code and the other side of the steel sheet. The assembly device 4 further includes four nailing units 329.

[0037] In this embodiment, the third transfer device 5 is two conveyor belts with variable spacing. The gluing device 6 is used for injecting glue at different positions of the door and window frames. The fourth transfer device 7 is two conveyor belts with variable spacing. A lifting assembly is further provided under the conveyor belts of the fourth transfer device 7. The lifting assembly includes a connecting rod 71 hinged to the conveyor belt and the base, and a hinged lifting cylinder 72 hinged to the connecting rod 71 and the base. The drilling device 8 is used for drilling the door and window frames after the glue injection is completed. By providing the third transfer device 5 and the fourth transfer device 7, when the efficiencies of different devices are different, the door and window frames of the previous step can be temporarily stored on the third transfer device 5 or the fourth transfer device 7 for waiting, avoiding the influence of a device with lower working efficiency on the overall assembly line efficiency. By providing the gluing device 6 and the drilling device 8, the door and window frames after the glue injection can sequentially complete the glue injection and drilling operations on the assembly line, avoiding the need for manual line change and other operations by the staff, and expanding the working range of the assembly line.

[0038] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An assembly line for aluminum door and window corner code steel sheets, comprising a first transfer device (2) and an assembly device (4) arranged in sequence, characterized in that, The assembly line further includes a pre-assembly device (3) and a second transfer device. The pre-assembly device (3) is arranged between the first transfer device (2) and the assembly device (4). The pre-assembly device (3) includes an angle code mechanism (32) and a steel sheet mechanism (33). The second transfer device is arranged between the pre-assembly device (3) and the assembly device (4).

2. The aluminum door and window corner code steel sheet assembly line according to claim 1, characterized in that, The pre-assembly device (3) further includes a fourth transfer mechanism (31). The pre-assembly device (3) includes at least one angle code mechanism (32) and one steel sheet mechanism (33). The angle code mechanism (32) and the steel sheet mechanism (33) are arranged distributively in the length direction of the fourth transfer mechanism (31).

3. An aluminum door and window corner code steel sheet assembly line according to claim 2, characterized in that Both the angle code mechanism (32) and the steel sheet mechanism (33) include a first workbench (321) and a second workbench (322) distributed on both sides of the fourth transfer mechanism (31). First positioning units are arranged on both the first workbench (321) and the second workbench (322). The first positioning units are used to abut against the side end faces in the moving direction of the profile. A storage unit (323) and a pushing unit (324) are also arranged on both the first workbench (321) and the second workbench (322).

4. An aluminum door and window corner code steel sheet assembly line according to claim 3, characterized in that, Second positioning units are also fixedly arranged on both the first workbench (321) and the second workbench (322). A moving unit (325) is arranged on the first workbench (321) and / or the second workbench (322). The moving unit (325) is used to adjust the distance between the first workbench (321) and the second workbench (322).

5. An aluminum door and window corner code steel sheet assembly line according to claim 3, characterized in that The storage unit (323) includes a right-angle limiting member (3231) and an adjusting member (3232) arranged in the vertical direction. A plurality of angle codes or steel sheets to be assembled are stacked between the right-angle limiting member (3231) and the adjusting member (3232). The adjusting member (3232) can move to adjust the distance from the right-angle limiting member (3231). The pushing unit (324) includes a pushing cylinder (3241) and a pushing plate (3242). One end of the pushing plate (3242) is connected to the piston rod of the pushing cylinder (3241). The other end of the pushing plate (3242) is used to push the lowermost angle code or steel sheet in the storage unit (323) into the profile.

6. The aluminum door and window corner code steel sheet assembly line according to claim 3, characterized in that, Nailing units (329) are also arranged on both the first workbench (321) and the second workbench (322) of the angle code mechanism (32). The nailing units (329) include a three-axis moving workbench (3291) and a nail gun (3292). The nailing units (329) are used to fix the angle codes in the profile.

7. An aluminum door and window corner code steel sheet assembly line according to claim 6, characterized in that Third positioning units are also arranged on both the first workbench (321) and the second workbench (322) of the angle code mechanism (32). The third positioning units include a limiting plate (327) that can reciprocate in the length direction of the profile. The limiting plate (327) can abut against the angle code. The pushing plate (3242) pushes the angle code to make the angle code abut against and be limited by the limiting plate (327).

8. The aluminum door and window corner code steel sheet assembly line according to claim 1, characterized in that, The assembly line further includes a loading device (1). The first transfer device (2) includes a first transfer mechanism (21), a second transfer mechanism (22), and a third transfer mechanism (23). One side of the first transfer mechanism (21) is connected to the loading device (1). The two ends of the second transfer mechanism (22) are respectively connected to the first transfer mechanism (21) and the second transfer device. The two ends of the third transfer mechanism (23) are respectively connected to the second transfer mechanism (22) and the pre-assembly device (3).

9. The aluminum door and window corner code steel sheet assembly line according to claim 1, characterized in that, After the assembly device (4), a gluing device (6) and a drilling device (8) are sequentially arranged on the assembly line.

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