Circulating conveying system and method in aluminum profile production process

Abstract

The invention provides a circulating conveying system and method in the aluminum profile production process. The circulating conveying system comprises an upper-layer conveying roller way, a lower-layer conveying roller way, an aluminum profile containing basket and a circulating conveying control unit. The upper-layer conveying roller way extends in the longitudinal direction; the lower-layer conveying roller way extends in the longitudinal direction and is vertically spaced from the upper-layer conveying roller way; the aluminum profile containing baskets are independent and are separately arranged on the upper-layer conveying roller way and the lower-layer conveying roller way; the circulating conveying control unit is in control connection with the upper-layer conveying roller way and the lower-layer conveying roller way and controls the upper-layer conveying roller way to convey the vacant aluminum profile containing baskets back, the vacant aluminum profile containing baskets are conveyed to the lower-layer conveying roller way, and aluminum profile products are loaded into the aluminum profile containing baskets on the lower-layer conveying roller way and conveyed outwards. By means of the circulation conveying system and method, the production requirement for outwards conveying full-load containing baskets and inwards conveying no-load profile containing baskets at the same time can be met, the production conveying efficiency is improved, and the labor intensity of operators is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum profile production automation, and in particular to a circulating conveying system and method for an aluminum profile production process. Background Art

[0002] Aluminum profile is one of the highest quality lightweight metal materials, with the characteristics of high strength, corrosion resistance, aging resistance and low density. It is widely used in various fields such as construction engineering, mechanical equipment and electrical products.

[0003] During the production process, after the aluminum rod is extruded into a profile in the heating extrusion equipment, the aluminum profile needs to be transported out through the profile holding basket, and the profile holding basket needs to be recycled. After the above-mentioned extrusion molding production, the profile holding basket loaded with the profile is transported out by the extrusion molding equipment, and at the same time, the empty profile holding basket is transported to the extrusion equipment to prepare for loading the profile. In addition, during the aging treatment, cooling and shaping, and storage of the aluminum profile, there is also the situation of reciprocating transportation of the full profile holding basket and the empty profile holding basket as mentioned above.

[0004] In the process of conveying aluminum profiles in the production workshop, a manually operated crane is generally used to output the full profile basket and input the empty profile basket. Both occupy the same conveying channel and conveying equipment, with low conveying efficiency and high labor intensity for operators, which cannot meet the needs of continuous high-speed operation of extrusion molding equipment. Although some mechanical conveying rollers are used in the aluminum profile production workshop, the existing mechanical conveying rollers are only suitable for one-way conveying and cannot perform two-way circulation conveying at the same time. They occupy a large ground space and are difficult to meet the needs of the above-mentioned production processes. Therefore, it is urgent to set up an automated circulation conveying system to replace the current one-way mechanical conveying method to meet the orderly input of raw materials and output of molded products, and improve the automation level and processing efficiency of the production workshop. Summary of the invention

[0005] Based on this, the present invention provides a circulating conveying system and method for the aluminum profile production process, which meets the production needs of simultaneously conveying fully loaded baskets outward and conveying empty profile baskets inward, improves production conveying efficiency and reduces the labor intensity of operators.

[0006] In order to achieve the above-mentioned purpose, in the first aspect, the present invention provides a circulating conveying system for the aluminum profile production process, comprising an upper conveying roller, a lower conveying roller, an aluminum profile holding basket and a circulating conveying control unit. The upper conveying roller extends in the longitudinal direction; the lower conveying roller extends in the longitudinal direction and is arranged vertically spaced from the upper conveying roller; the aluminum profile holding basket includes a plurality of independent, detachable baskets arranged on the upper conveying roller and the lower conveying roller; the circulating conveying control unit is connected to the upper conveying roller and the lower conveying roller, and is configured to control the upper conveying roller to return the empty aluminum profile holding basket, convey the empty aluminum profile holding basket to the lower conveying roller, and load the aluminum profile products into the aluminum profile holding basket on the lower conveying roller and transport them out.

[0007] Furthermore, a basket unloading station is provided at the rear end of the upper conveyor roller, and a basket loading station is provided at the rear end of the lower conveyor roller, and the basket loading station is spaced backward from the basket unloading station by at least the length of an aluminum profile basket. A basket unloading station is provided at the rear end of the upper conveyor roller, and the empty aluminum profile basket returned by the upper conveyor roller is lifted from the upper conveyor roller to the auxiliary roller on the ground by the first lifting and changing device, so that after moving forward for a distance on the auxiliary roller, it is ready to be turned to the lower conveyor roller and loaded.

[0008] Furthermore, the lower conveyor roller is provided with an auxiliary conveyor roller on the outer side between the basket unloading station and the basket loading station, the basket unloading station is provided with a first hoisting and lane changing device for conveying the aluminum profile basket from the upper conveyor roller to the auxiliary conveyor roller, and the basket loading station is provided with a second hoisting and lane changing device for hoisting the aluminum profile basket from the auxiliary conveyor roller to the lower conveyor roller. A basket loading station is provided at the rear end of the lower conveyor roller, and an empty aluminum profile basket is hoisted to the lower conveyor roller by the first hoisting and lane changing device, and then the basket is loaded and transported outward along the lower conveyor roller.

[0009] Furthermore, the first hoisting lane-changing device includes a first door-shaped frame and a first hanging basket mechanism, the first door-shaped frame is laterally spanned between the upper conveying roller and the auxiliary conveying roller, and the first hanging basket mechanism is laterally adjustable in position in the first door-shaped frame.

[0010] Furthermore, the second hoisting lane-changing device includes a second portal frame and a second hanging basket mechanism, the second portal frame is laterally spanned between the lower conveying roller and the auxiliary conveying roller, and the second hanging basket mechanism is laterally adjustable in position in the second portal frame.

[0011] Furthermore, the first hanging basket mechanism / the second hanging basket mechanism comprises a movable hanging beam and a hanger, the movable hanging beam is arranged in the door-shaped frame, the hanger is arranged at the bottom of the movable hanging beam, and the aluminum profile holding basket is provided with a hanging ear adapted to the position of the hanger.

[0012] Furthermore, the door-shaped frame is provided with a hook position detector for detecting the position of the hook of the aluminum profile basket, and the circulating conveying control unit is configured to receive and control the door-shaped frame to fine-tune the front and rear position along the longitudinal guide rail according to the detection information of the hook position detector, so that the hanger is vertically aligned with the hook position. During implementation, the hook position detector can be a visual detector or an acoustic wave detector to quickly detect and identify the hook position, and record the quick connection of the hanger to the hook.

[0013] Furthermore, the upper conveyor roller / lower conveyor roller is arrayed with a plurality of conveyor roller groups along the length direction, each conveyor roller group includes a plurality of conveyor rollers arranged at intervals and connected by a chain mechanism, and at least one of the conveyor rollers is connected to a rotary drive mechanism. The rotary drive mechanism drives each conveyor roller to rotate synchronously, and the aluminum profile holding basket placed thereon is driven forward by rolling friction, which not only ensures smooth conveying, but also facilitates hoisting and placement, and facilitates hoisting and placement of the aluminum profile holding frame between the upper conveyor roller and the lower conveyor roller.

[0014] Further, the aluminum profile basket is provided with a position sensor, and the cyclic conveying control unit controls the start and stop of the upper conveying roller / lower conveying roller according to the received position sensor information; and / or, the unloading station and the loading station are respectively provided with position detectors for monitoring the aluminum profile basket station, and the cyclic conveying control unit controls the start and stop of the upper conveying roller / lower conveying roller according to the received position sensor information. In the implementation process, the position sensor can be a travel switch, an optical or acoustic sensor.

[0015] In order to achieve the above-mentioned object, in a second aspect, the present invention provides a method for circulating and conveying an aluminum profile basket, using the circulating and conveying system of the aluminum profile production process described in item 1, comprising: S100. The upper conveyor roller conveys the empty aluminum profile basket to the basket loading station; S200. At the basket unloading station, the first hoisting and changing device hangs the aluminum profile basket on the upper conveyor roller and places it on the auxiliary conveyor roller; S300. The auxiliary conveyor roller conveys the aluminum profile basket to the basket loading station; S400. At the basket loading station, the second hoisting and changing device hangs the aluminum profile holding basket of the auxiliary conveyor roller and places the basket to the lower conveyor roller; S500. At the rear end of the lower conveyor roller, the aluminum profile holding basket is loaded with aluminum profile products, and the lower conveyor roller transports the loaded aluminum profile holding basket outwardly.

[0016] Compared with the one-way conveying roller in the prior art, the technical advantages of the circulating conveying system and conveying method in the production process of aluminum profiles provided by the present invention are at least reflected in: 1. An aluminum profile basket is provided which can be detachably mounted on the upper conveyor roller and the lower conveyor roller. The empty aluminum profile basket is returned to the upper conveyor roller by the control of the circulating conveying control unit, and the empty aluminum profile basket is conveyed to the lower conveyor roller. After loading the aluminum profile, the fully loaded aluminum profile basket is conveyed outward by the lower conveyor roller. The above-mentioned conveyor rollers which are arranged relatively up and down and extend in the same direction can meet the production needs of simultaneously conveying the fully loaded basket outward and conveying the empty profile basket inward, thereby reducing the floor space occupied by the conveying in the workshop, improving the production and conveying efficiency, and reducing the labor intensity of the operators. 2. The empty aluminum profile basket returned from the upper conveyor roller is lifted from the upper conveyor roller to the auxiliary roller on the ground through the first lifting and changing device, and the empty aluminum profile basket is lifted from the auxiliary roller to the lower conveyor roller through the first lifting and changing device, and then loaded into the basket and transported outward along the lower conveyor roller, so that the empty basket is lowered from the upper conveyor roller and transported to the lower conveyor roller in an orderly manner, and the use of the lower conveyor roller is avoided, so that the loading and outward transportation of aluminum profiles can be carried out in an orderly manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a front view of an embodiment of a circulating conveying system for an aluminum profile production process provided; Figure 2 is a top view of an embodiment of a circulating conveying system for an aluminum profile production process provided; Figure 3 It is a schematic diagram of the structure of a single conveyor roller group of the upper conveyor roller table provided; Figure 4 This is a front view of the circulating conveying process of an embodiment of the circulating conveying system of the aluminum profile production process provided; Figure 5 It is a top view of the circulating conveying process of an embodiment of the circulating conveying system of the aluminum profile production process provided; Figure 6 is a schematic structural diagram of a first hoisting lane-changing device provided; Figure 7 It is a schematic diagram of the state of an aluminum profile containing basket loaded with aluminum profile products; Figure 8 The present invention is a flow chart of an embodiment of a method for circulating and conveying an aluminum profile containing basket provided.

[0018] Description of the accompanying drawings: 1-upper conveying roller, 11-unloading basket station, 12-rotation driving mechanism, 13-conveying roller group, 14-chain mechanism; 2-lower conveyor roller, 21-basket loading station; 3- Auxiliary conveyor roller; 41-first hoisting and changing device, 42-second hoisting and changing device, 43-first door-shaped frame, 44-first hanging basket mechanism, 45-movable hanging beam, 46-hanging device; 5-aluminum profile holding basket, 51-hanging ear; 6-Aluminum profile products. DETAILED DESCRIPTION

[0019] Although some mechanical conveyor rollers are now used in aluminum profile production workshops, the existing mechanical conveyor rollers are only suitable for one-way conveying and cannot perform two-way circulation conveying at the same time. They occupy a large ground space and are difficult to meet the needs of the above-mentioned production processes. Therefore, it is urgent to set up an automated circulation conveying system to replace the current one-way mechanical conveying method to meet the orderly input of raw materials and output of molded products, and improve the degree of automation and processing efficiency of the production workshop.

[0020] To this end, the present invention provides a circulating conveying system and method for an aluminum profile production process, including an upper conveying roller, a lower conveying roller, an aluminum profile holding basket, and a circulating conveying control unit. The upper conveying roller extends in the longitudinal direction; the lower conveying roller extends in the longitudinal direction and is arranged vertically spaced from the upper conveying roller; the aluminum profile holding basket includes a plurality of independent, detachable baskets arranged on the upper conveying roller and the lower conveying roller; the circulating conveying control unit is connected to the upper conveying roller and the lower conveying roller to control the upper conveying roller to return the empty aluminum profile holding basket, to convey the empty aluminum profile holding basket to the lower conveying roller, and to load the aluminum profile products into the aluminum profile holding basket on the lower conveying roller and transport them out. The use of the provided circulating conveying system and method can meet the production needs of simultaneously conveying fully loaded holding baskets outwardly and conveying empty profile holding baskets inwardly, thereby improving the production conveying efficiency and reducing the labor intensity of operators.

[0021] The technical scheme of the present invention is further described in detail below through the accompanying drawings and embodiments. The description of the exemplary embodiments is merely illustrative and is by no means intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art.

[0022] like Figure 1 and Figure 2As shown, the present invention provides a circulating conveying system for the production process of aluminum profiles, including an upper conveying roller 1, a lower conveying roller 2, an aluminum profile holding basket 5 and a circulating conveying control unit. The upper conveying roller 1 extends in the longitudinal direction; the lower conveying roller 2 extends in the longitudinal direction and is arranged vertically spaced from the upper conveying roller 1; the aluminum profile holding basket 5 includes a plurality of independent ones, which can be detachably arranged on the upper conveying roller 1 and the lower conveying roller 2; the circulating conveying control unit is connected to the upper conveying roller 1 and the lower conveying roller, and is configured to control the upper conveying roller 1 to return the empty aluminum profile holding basket 5, to convey the empty aluminum profile holding basket 5 to the lower conveying roller 2, and to load the aluminum profile product 6 into the aluminum profile holding basket 5 on the lower conveying roller and to convey it out.

[0023] Based on the provided circulating conveying system of the aluminum profile production process, the aluminum profile holding basket 5 can be detachably installed on the upper conveying roller 1 and the lower conveying roller 2. The aluminum profile holding basket loaded with aluminum profiles is controlled by the circulating conveying control unit to convey the fully loaded aluminum profile holding basket outward through the lower conveying roller 2, and the empty aluminum profile holding basket is returned to the upper conveying roller 1, and then the empty aluminum profile holding basket is conveyed to the lower conveying roller 2, and the aluminum profile is loaded and output again, and the above reciprocating conveying process is cyclically performed to meet the production needs of simultaneously conveying fully loaded holding baskets outward and conveying empty profile holding baskets inward. At the same time, the above-mentioned upper conveying roller 1 and lower conveying roller 2 are arranged relative to each other up and down and extend in the same direction, which reduces the floor space occupied by the workshop.

[0024] In some embodiments, the rear end of the upper conveyor roller is provided with a basket unloading station, and the rear end of the lower conveyor roller is provided with a basket loading station, and the basket loading station is spaced backward relative to the basket unloading station by at least the length of an aluminum profile basket 5. Furthermore, the lower conveyor roller 2 is provided with an auxiliary conveyor roller 3 on the outer side between the basket unloading station and the basket loading station, and the basket unloading station is provided with a first hoisting and changing lane device 41 for conveying the aluminum profile basket from the upper conveyor roller 1 to the auxiliary conveyor roller 3, and the basket loading station is provided with a second hoisting and changing lane device 42 for hoisting the aluminum profile basket from the auxiliary conveyor roller 3 to the lower conveyor roller 2.

[0025] Based on the above embodiment, the empty aluminum profile basket returned by the upper conveyor roller 1 is lifted from the upper conveyor roller to the auxiliary roller on the ground through the first lifting and lane-changing device 41, and the empty aluminum profile basket is lifted from the auxiliary roller to the lower conveyor roller through the first lifting and lane-changing device, and then loaded into the basket and transported outward along the lower conveyor roller, thereby realizing the orderly conveyance of the empty basket from the upper conveyor roller to the lower conveyor roller, and avoiding affecting the use of the lower conveyor roller, so that the loading and outward transportation of the aluminum profiles can be carried out in an orderly manner.

[0026] like Figure 6 As shown, in the implementation process, the first hoisting lane-changing device 41 includes a first door-shaped frame 43 and a first hanging basket mechanism 44. The first door-shaped frame 43 is transversely arranged between the upper conveying roller 1 and the auxiliary conveying roller 3, and the first hanging basket mechanism is transversely adjustable and arranged in the first door-shaped frame 43. The second hoisting lane-changing device 42 includes a second door-shaped frame and a second hanging basket mechanism. The second door-shaped frame is transversely arranged between the lower conveying roller 2 and the auxiliary conveying roller 3, and the second hanging basket mechanism is transversely adjustable and arranged in the second door-shaped frame.

[0027] like Figure 6 and Figure 7 As shown, in some embodiments, the first hanging basket mechanism 44 / the second hanging basket mechanism includes a movable hanging beam 45 and a hanger 46, the movable hanging beam 45 is arranged in the portal frame, the hanger 46 is arranged at the bottom of the movable hanging beam 45, and the aluminum profile holding basket 5 is provided with a hanging ear 51 adapted to the position of the hanger 46. Further, the portal frame is provided with a hanging ear position detector for detecting the hanging ear position of the aluminum profile holding basket 5, and the circulating conveying control unit is configured to receive and control the portal frame to fine-tune the front and rear position along the longitudinal guide rail according to the detection information of the hanging ear 51 position detector, so that the hanger 46 is vertically aligned with the hanging ear 51 position. In the implementation process, the hanging ear position detector can be a visual detector or an acoustic wave detector to quickly detect and identify the hanging ear position, and remember the quick connection of the hanger to the hanging ear.

[0028] like Figure 3 As shown, in the implementation process, the upper conveyor roller 1 / lower conveyor roller 2 is arrayed with a plurality of conveyor roller groups 13 along the length direction, each conveyor roller group 13 includes a plurality of conveyor rollers arranged at intervals and connected by a chain mechanism 14, and at least one of the conveyor rollers is connected to the rotary drive mechanism 12. The rotary drive mechanism 12 drives each conveyor roller to rotate synchronously, and the aluminum profile holding basket placed thereon is driven forward by rolling friction, which not only ensures smooth transportation, but also facilitates hoisting and placement, and facilitates hoisting and placement of the aluminum profile holding frame between the upper conveyor roller 1 and the lower conveyor roller 2.

[0029] During the implementation, the aluminum profile holding basket 5 is provided with a position sensor, and the cyclic conveying control unit controls the start and stop of the upper conveying roller / lower conveying roller according to the received position sensor information; and / or, the unloading station and the loading station are respectively provided with position detectors for monitoring the aluminum profile holding basket 5 station, and the cyclic conveying control unit controls the start and stop of the upper conveying roller / lower conveying roller according to the received position detector information. During the implementation, the position sensor can be a travel switch, an optical or acoustic sensor, all of which are mature components of the prior art and are not described in detail.

[0030] The circulating conveying control unit can adopt an industrial computer, a PLC programmable controller or an artificial intelligence device, all of which are mature and common technologies, and their structural principles will not be described in detail.

[0031] like Figure 4 , Figure 5 and Figure 8 As shown, a method for circulating and conveying an aluminum profile basket, using the circulating and conveying system of the aluminum profile production process described in item 1, comprises: S100. The upper conveyor roller 1 feeds the empty aluminum profile basket 5 back to the basket loading station 11 until it stops at the basket unloading station 11 at the rear end of the upper conveyor roller 1. A travel switch can be installed at the basket unloading station 11. When the travel switch detects the aluminum profile basket 5, the rotary drive mechanism stops driving the roller group to rotate, so that the aluminum profile basket stops in time. S200. At the basket unloading station, the first hoisting and changing device 41 hangs the aluminum profile basket 5 on the upper conveyor roller to the auxiliary conveyor roller 3, and the auxiliary conveyor roller 3 receives the empty aluminum profile basket 5 hoisted and conveys it forward; S300. The auxiliary conveyor roller 3 conveys the aluminum profile basket to the basket loading station. A travel switch may be provided at the front and rear ends of the auxiliary conveyor roller 3. The signal is transmitted to the circulation conveying control unit through the travel switch. The circulation conveying control unit controls the start and stop of the auxiliary conveyor roller in time according to the received signal. S400. At the basket loading station 21, the second hoisting and changing device 42 hangs the aluminum profile basket of the auxiliary conveyor roller 3 and places the basket on the lower conveyor roller 2. The empty basket is light in weight and convenient to hoist, which reduces the difficulty of hoisting; S500. At the rear end of the lower conveyor roller 2, the aluminum profile holding basket 5 is loaded with the aluminum profile product 6. The lower conveyor roller 2 transports the loaded aluminum profile holding basket 5. A travel switch can be installed at the basket loading station 21. When the travel switch detects the aluminum profile holding frame 5, the rotary drive mechanism stops driving the roller group to rotate, so that the aluminum profile holding basket stops stably.

[0032] Based on the above-mentioned circular conveying method, the operator is not required to manually operate the crane to lift and transfer the conveying basket, which reduces the labor intensity of the operator and improves the production and conveying efficiency.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A circulating conveying system for an aluminum profile production process, characterized in that: include: An upper conveying roller (1) extending in the longitudinal direction; The lower conveying roller conveyor (2) extends longitudinally and is arranged vertically spaced apart from the upper conveying roller conveyor (1); The aluminum profile holding basket (5) comprises a plurality of independent baskets which are detachably arranged on the upper conveying roller conveyor (1) and the lower conveying roller conveyor (2); and A circular conveying control unit is connected to the upper conveying roller (1) and the lower conveying roller (2) and is configured to control the upper conveying roller (1) to return the empty aluminum profile containing basket (5), to convey the empty aluminum profile containing basket (5) to the lower conveying roller (2), and to load the aluminum profile product (6) into the aluminum profile containing basket (5) on the lower conveying roller and convey it out.

2. The circulating conveying system for the aluminum profile production process according to claim 1 is characterized in that: The rear end of the upper conveying roller (2) is provided with a basket unloading station, and the rear end of the lower conveying roller is provided with a basket loading station, and the basket loading station is spaced backward relative to the basket unloading station by at least the length of an aluminum profile holding basket (5).

3. The circulating conveying system for the aluminum profile production process according to claim 2 is characterized in that: An auxiliary conveying roller (3) is arranged on the outer side of the lower conveying roller (2) between the basket unloading station and the basket loading station. The basket unloading station is provided with a first hoisting and lane changing device (41) for conveying the aluminum profile basket from the upper conveying roller (1) to the auxiliary conveying roller (3). The basket loading station is provided with a second hoisting and lane changing device (42) for hoisting the aluminum profile basket from the auxiliary conveying roller (3) to the lower conveying roller (2).

4. The circulating conveying system for the aluminum profile production process according to claim 3 is characterized in that: The first hoisting lane-changing device (41) comprises a first door-shaped frame (43) and a first hanging basket mechanism (44); the first door-shaped frame (43) is laterally arranged between the upper conveying roller conveyor (1) and the auxiliary conveying roller conveyor (3); and the first hanging basket mechanism (44) is laterally arranged in the first door-shaped frame (43) so that its position can be adjusted.

5. The circulating conveying system for the aluminum profile production process according to claim 3 is characterized in that: The second hoisting lane-changing device (42) comprises a second door-shaped frame and a second hanging basket mechanism, the second door-shaped frame being laterally arranged between the lower conveying roller conveyor (2) and the auxiliary conveying roller conveyor (3), and the second hanging basket mechanism being laterally adjustable in position and arranged in the second door-shaped frame.

6. The circulating conveying system for the aluminum profile production process according to claim 2, 3 or 4, characterized in that: The first hanging basket mechanism / the second hanging basket mechanism comprises a movable hanging beam (45) and a hanger (46); the movable hanging beam (45) is arranged in the door-shaped frame body; the hanger (46) is arranged at the bottom of the movable hanging beam; and the aluminum profile holding basket (5) is provided with a hanging ear (51) adapted to the position of the hanger (46).

7. The circulating conveying system for the aluminum profile production process according to claim 6, characterized in that: The door-shaped frame is provided with a lug position detector for detecting the position of the lug of the aluminum profile holding basket (5), and the circulating conveying control unit is configured to receive and control the door-shaped frame to fine-tune the front and rear position along the longitudinal guide rail according to the detection information of the lug position detector, so that the hanger is vertically aligned with the lug (51).

8. The circulating conveying system for the aluminum profile production process according to claim 1 or 2, characterized in that: The upper conveying roller conveyor (1) / lower conveying roller conveyor (2) is provided with a plurality of conveying roller groups (13) arranged in an array along the length direction, each conveying roller group (13) comprising a plurality of conveying rollers arranged at intervals and connected by a chain mechanism (14), at least one of the conveying rollers being connected to a rotating drive mechanism (12).

9. The circulating conveying system for the aluminum profile production process according to claim 1, characterized in that: The aluminum profile holding basket (5) is provided with a position sensor, and the cyclic conveying control unit controls the start and stop of the upper conveying roller / lower conveying roller according to the received position sensor information; and / or, the basket unloading station and the basket loading station are respectively provided with a position detector for monitoring the aluminum profile holding basket (5) station, and the cyclic conveying control unit controls the start and stop of the upper conveying roller / lower conveying roller according to the received position sensor information.

10. A circulating conveying method for an aluminum profile production process, using the circulating conveying system for an aluminum profile production process according to any one of claims 1 to 9, characterized in that: include: S100. The upper conveyor roller (1) returns the empty aluminum profile basket (5) to the basket loading station; S200. At the basket unloading station, the first hoisting and changing device (41) hangs the aluminum profile basket (5) on the upper conveyor roller to the auxiliary conveyor roller (3); S300. The auxiliary conveyor roller (3) conveys the aluminum profile basket to the basket loading station; S400. At the basket loading station, the second hoisting and changing device (42) hangs the aluminum profile basket from the auxiliary conveyor roller (3) and places the basket on the lower conveyor roller (2); S500. At the rear end of the lower conveying roller (2), the aluminum profile holding basket (5) is loaded with the aluminum profile product (6), and the lower conveying roller (2) transports the loaded aluminum profile holding basket (5) outwardly.

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