A full-automatic aluminum can production line automatic feeding equipment

Abstract

The present application relates to the field of conveying and feeding equipment, and particularly relates to a full-automatic aluminum can production line automatic feeding equipment, which comprises a feeding conveying table and a screening conveying table arranged in sequence along the conveying direction of the can cover, and a turnover assembly is arranged on the screening conveying table, the turnover assembly comprises a turnover plate, a mounting rack is fixedly arranged on the screening conveying table, an industrial camera is fixedly arranged on the upper end of the mounting rack, the industrial camera is located directly above the turnover plate, a blocking plate is arranged on the side of the turnover plate close to the feeding conveying table, the two ends of the blocking plate are rotationally matched with the screening conveying table through torsion spring shafts, the two ends of the turnover plate are respectively rotationally matched with the screening conveying table through rotating shafts and hollow shafts, and one end of the hollow shaft is rotationally and sealingly matched with a suction pipe. The full-automatic aluminum can production line automatic feeding equipment can realize automatic detection and turnover of the can cover during the conveying and feeding process of the can cover, so that all the can covers can be conveyed and fed in the correct direction, and the subsequent can cover packaging process of the aluminum can is facilitated.

Description

Technical Field

[0001] This invention relates to the field of conveying and feeding equipment technology, and in particular to an automatic feeding device for a fully automatic aluminum can production line. Background Technology

[0002] Aluminum cans are packaging containers made primarily of aluminum alloy. Due to their lightweight, durability, corrosion resistance, and recyclability, they are widely used in the food, beverage, cosmetic, pharmaceutical, and industrial sectors, making them a preferred material in the modern packaging industry.

[0003] The aluminum can processing production line mainly consists of two parts: the "can body" and the "can lid". The processing flow mainly includes the steps of can body forming, can wall treatment, can lid stamping, and filling and sealing. After the can lid is stamped, it needs to be transported to a designated station to prepare for the sealing process. The existing can lid conveying and feeding equipment only realizes a simple conveying function. Workers still need to turn the can lids over to make them face the same direction, and the can lids need to be stacked neatly in advance, which seriously affects the conveying and feeding efficiency of the can lids. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic feeding device for a fully automated aluminum can production line, which aims to solve the above-mentioned technical problems.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] An automatic feeding device for a fully automated aluminum can production line includes a feeding conveyor and a screening conveyor arranged sequentially along the can lid conveying direction. A tilting assembly is provided on the screening conveyor, comprising a tilting plate. A mounting frame is fixedly mounted on the screening conveyor, and an industrial camera is fixedly mounted on the upper end of the mounting frame, positioned directly above the tilting plate. A baffle plate is provided on the side of the tilting plate near the feeding conveyor. The baffle plate is rotatably engaged with the screening conveyor via torsion spring shafts at both ends. The tilting plate is rotatably engaged with the screening conveyor via a rotating shaft and a hollow shaft at both ends, respectively. One end of the hollow shaft is rotatably sealed with an extraction pipe. When the extraction pipe extracts air, it drives the baffle plate to rotate via the torsion spring shaft to block the can lid. A tilting motor is fixedly mounted on the side wall of the screening conveyor, and a drive gear is connected to the output end of the tilting motor. A transmission gear is fixedly mounted on the rotating shaft, and the drive gear meshes with the transmission gear.

[0007] Below the screening conveyor platform is a receiving conveyor platform for receiving and conveying the can lids flipped by the flipping component. One end of the screening conveyor platform and the receiving conveyor platform are connected to a discharge track, and a discharge conveyor platform is provided at the bottom of the discharge track.

[0008] As a further aspect of the present invention: an air cavity is provided inside the flip plate, and negative pressure air nozzles are evenly arranged at the upper end of the flip plate. The negative pressure air nozzles are connected to the air cavity, and the bottom end of the air cavity is connected to one end of the hollow shaft through a vent pipe.

[0009] As a further embodiment of the present invention: a fixed seat is provided on the side wall of the screening conveyor platform, the air extraction pipe is fixedly installed in the fixed seat, a rotary joint is fixedly provided at one end of the air extraction pipe, the hollow shaft is rotatably sealed with the rotary joint, an outer shell is provided at the upper end of the air extraction pipe, a fan blade is provided inside the outer shell, the fan blade is rotatably connected to the outer shell through a pivot, and the two ends of the pivot are connected to the torsion spring shaft through a transmission belt.

[0010] As a further embodiment of the present invention: the screening conveyor platform is provided with a card seat extending from both sides, the card seat engaging with the baffle plate and blocking and limiting it, and the screening conveyor platform is provided with clearance grooves on both sides for the baffle plate to rotate.

[0011] As a further aspect of the present invention: a limiting sleeve is provided extending upward from one end of the receiving and conveying platform, the limiting sleeve being located directly below the flipping plate, and the inner diameter of the limiting sleeve being larger than the diameter of the can lid.

[0012] As a further embodiment of the present invention: the feeding track includes an inclined part and a vertical part, the top of the inclined part is smoothly provided with a feeding port one, the feeding port one is transitionally connected to the end of the screening conveyor table, the side wall of the inclined part is smoothly provided with a feeding port two, the feeding port two is transitionally connected to the end of the receiving conveyor table, the bottom of the vertical part is provided with a discharge port, and the discharge conveyor table is located at the bottom of the discharge port.

[0013] As a further embodiment of the present invention: limiting guide rails for aligning and limiting the can lids are fixed on both sides of the discharge conveyor platform, and an electric sliding rail is fixed above the discharge conveyor platform, on which a stacking stop is linearly slidably installed.

[0014] As a further embodiment of the present invention: the stacking stop includes a pressing part, a connecting rod and an electric slide block, the pressing part abuts against the side wall of the can lid, the bottom end of the connecting rod is fixedly connected to the pressing part, the top end of the connecting rod is fixedly connected to the electric slide block, and the electric slide block is linearly slidably installed on the power-connected guide rail.

[0015] As a further aspect of the present invention: guide plates are inclinedly arranged on both sides of the upper end of the feeding conveyor platform, and limit plates are provided at the ends of the guide plates. A channel for the can lids to be arranged and passed through is formed between the limit plates on both sides. Protruding plates are provided on the inner walls on both sides of the screening conveyor platform, and a limit track is formed between the protruding plates and the screening conveyor platform to apply longitudinal movement constraints to the can lids.

[0016] As a further aspect of the present invention:

[0017] The beneficial effects of this invention are:

[0018] (1) By setting up a flipping component, an industrial camera is used to visually inspect the can lid to determine whether it is facing up. When the can lid is facing up, the can lid on the flipping plate will continue to be conveyed forward under the conveying push of the can lid behind. When the can lid is facing down, the air extraction pipe is controlled to start evacuating according to the detection signal. The upper part of the flipping plate will generate negative pressure suction to hold the can lid. During the evacuation process, the baffle plate will rotate to block the can lid behind. At the same time, the flipping motor drives the transmission gear to rotate through the drive gear. The transmission gear will drive the flipping plate to rotate 180° through the rotating shaft, so that the can lid faces up and falls on the receiving conveyor to continue to be conveyed forward. Thus, the automatic detection and flipping process of the can lid can be realized during the can lid conveying and feeding process, so that all can lids can maintain the correct orientation for conveying and feeding, which is beneficial to the subsequent can lid sealing process of aluminum cans.

[0019] (2) By setting up a feeding track and a discharge conveyor, when the can lid enters the feeding track, the feeding track limits and guides the can lid, so that the can lid can always maintain the correct orientation and pass through the inclined part and the vertical part in sequence, and can change from the horizontal state to the vertical state. The upright can lid will fall on the discharge conveyor. By using the limiting guide rail and the blocking of the stacking blocking parts, the upright can lid can be gradually stacked and automatically aligned along the discharge conveyor, thereby realizing the integrated conveying process of can lid feeding, detection, flipping, feeding and discharging, which greatly improves the conveying and feeding efficiency of can lid. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of the screening conveyor table in this invention.

[0023] Figure 3 This is a schematic diagram of the baffle plate in this invention.

[0024] Figure 4 This is a schematic diagram of the flipping component in this invention.

[0025] Figure 5 This is a schematic diagram of the air extraction pipe in this invention.

[0026] Figure 6 This is a schematic diagram of the receiving and conveying platform in this invention.

[0027] Figure 7This is a schematic diagram of the material feeding track in this invention.

[0028] Figure 8 This is a schematic diagram of the stacking retainer in this invention.

[0029] In the diagram: 1. Feed conveyor; 11. Guide plate; 12. Limiting plate; 2. Screening conveyor; 21. Convex plate; 22. Mounting bracket; 23. Industrial camera; 24. Baffle plate; 241. Card holder; 242. Clearance groove; 243. Torsion spring shaft; 244. Transmission belt; 3. Tilting assembly; 31. Tilting plate; 311. Air chamber; 312. Negative pressure air nozzle; 313. Vent pipe; 32. Rotating shaft; 321. Transmission gear; 33. Hollow shaft; 34. Extraction pipe; 341. Fixed base; 342. Rotary joint; 343. Outer shell; 344. Pivot; 345. Fan blade; 35. Tilting motor; 351. Drive gear; 4. Receiving conveyor table; 41. Limiting sleeve; 5. Unloading track; 51. Inclined part; 511. Feed inlet one; 512. Feed inlet two; 52. Vertical part; 521. Discharge port; 6. Discharge conveyor table; 61. Limiting guide rail; 62. Electric sliding rail; 63. Stacking stop; 631. Pressing part; 632. Connecting rod; 633. Electric sliding base. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1-5 As shown, this invention is an automatic feeding device for a fully automatic aluminum can production line, including a feeding conveyor 1 and a screening conveyor 2 arranged sequentially along the can lid conveying direction. A tilting assembly 3 is provided on the screening conveyor 2, including a tilting plate 31. A mounting frame 22 is fixedly mounted on the screening conveyor 2, and an industrial camera 23 is fixedly mounted on the upper end of the mounting frame 22. The industrial camera 23 is located directly above the tilting plate 31. A baffle plate 24 is provided on the side of the tilting plate 31 closest to the feeding conveyor 1, and both ends of the baffle plate 24 are connected by torsion spring shafts 243. Rotary engagement with the screening conveyor 2, the two ends of the tilting plate 31 are respectively connected to the screening conveyor 2 via a rotating shaft 32 and a hollow shaft 33. One end of the hollow shaft 33 is rotated and sealed with the air extraction pipe 34. When the air extraction pipe 34 is extracting air, it drives the baffle plate 24 to rotate via the torsion spring shaft 243 to block the can lid. A tilting motor 35 is fixed on the side wall of the screening conveyor 2. The output end of the tilting motor 35 is connected to a drive gear 351. A transmission gear 321 is fixed on the rotating shaft 32. The drive gear 351 meshes with the transmission gear 321.

[0032] Specifically, by setting up the flipping component 3, the stamped can lids fall onto the feeding conveyor 1 and are conveyed forward to the screening conveyor 2. When the can lids pass the flipping plate 31, the industrial camera 23 performs visual inspection to determine whether the can lids are facing upwards. When the can lids are facing upwards, the flipping component 3 does not operate, and the can lids on the flipping plate 31 will continue to be conveyed forward by the conveying of the can lids behind. When the can lids are facing downwards, the air extraction pipe 34 is controlled to start extracting air according to the detection signal, and a negative pressure suction force will be generated at the upper end of the flipping plate 31. The can lid is attracted and held in place. During the evacuation process, the baffle plate 24 rotates to block the can lid behind it. At the same time, the flipping motor 35 drives the transmission gear 321 to rotate through the drive gear 351. The transmission gear 321 drives the flipping plate 31 to rotate 180° through the rotating shaft 32, so that the can lid faces upward and falls onto the receiving conveyor table 4 to continue to be conveyed forward. Thus, the can lid can be automatically detected and flipped during the can lid conveying and feeding process, so that all can lids can be conveyed and fed in the correct orientation, which is beneficial to the subsequent can lid sealing process of aluminum cans.

[0033] like Figure 6 and Figure 7 As shown, a receiving conveyor 4 is provided below the screening conveyor 2 to receive and convey the can lids flipped by the flipping component 3. The screening conveyor 2 and the receiving conveyor 4 are connected to a discharge rail 5 at one end, and a discharge conveyor 6 is provided at the bottom of the discharge rail 5.

[0034] Specifically, the can lids that were originally facing upwards are conveyed into the unloading track 5 via the screening conveyor 2. After being flipped, the can lids that were originally facing upwards are conveyed into the unloading track 5 via the receiving conveyor 4. The unloading track 5 provides a limiting and guiding function for the can lids, ensuring that all can lids are always conveyed in the correct orientation within the unloading track 5. The can lids are then changed from a horizontal to a vertical state. The upright can lids are gradually stacked and automatically aligned along the discharge conveyor 6, thus realizing an integrated conveying process for can lid loading, inspection, flipping, unloading, and discharge.

[0035] like Figure 3 and Figure 4 As shown, the flip plate 31 has an air chamber 311 inside, and negative pressure air nozzles 312 are evenly arranged on the upper end of the flip plate 31. The negative pressure air nozzles 312 are connected to the air chamber 311, and the bottom end of the air chamber 311 is connected to one end of the hollow shaft 33 through the air pipe 313.

[0036] Specifically, when the can lid with the reverse side facing up is conveyed onto the flipping plate 31, the industrial camera 23 directly above the flipping plate 31 will be able to detect the orientation of the can lid at this time and send the detection signal to the background control switch, and control the external air pump to start sucking air through the air extraction pipe 34. Since the air extraction pipe 34 is connected to the air chamber 311 through the hollow shaft 33 and the air pipe 313, the negative pressure air nozzle 312 continuously sucks air at the upper end of the flipping plate 31 and generates negative pressure suction, so that the can lid with the reverse side facing up can be firmly attracted and rotated 180° with the flipping plate 31 so that the front side faces up. At this time, the air extraction pipe 34 is controlled to stop sucking air, and the flipped can lid will fall directly onto the receiving conveyor table 4 under its own gravity.

[0037] It should be noted that in order to ensure the normal conveying process of the can lid on the tilting plate 31, the top of the negative pressure nozzle 312 should not be higher than the upper surface of the tilting plate 31, so as to prevent obstruction of the can lid.

[0038] like Figures 3-5 As shown, a fixed seat 341 is provided on the side wall of the screening conveyor table 2. The air extraction pipe 34 is fixedly installed in the fixed seat 341. A rotary joint 342 is fixed at one end of the air extraction pipe 34. The hollow shaft 33 is rotatably sealed with the rotary joint 342. An outer shell 343 is provided at the upper end of the air extraction pipe 34. A fan blade 345 is provided inside the outer shell 343. The fan blade 345 is rotatably connected to the outer shell 343 through a pivot 344. The two ends of the pivot 344 are connected to the torsion spring shaft 243 through a transmission belt 244.

[0039] Specifically, the function of the rotary joint 342 is to ensure that the hollow shaft 33 can maintain normal rotation while remaining connected to the suction pipe 34, thus guaranteeing a normal suction process. During the suction process, the continuous airflow within the suction pipe 34 drives the fan blade 345 to rotate, which in turn drives the pivot 344 to rotate synchronously. The pivot 344 then drives the torsion spring shaft 243 to rotate via the transmission belt 244, thereby enabling the baffle plate 24 to rotate and block the rear can lid to prevent it from affecting the tipping process.

[0040] like Figure 3 As shown, the screen conveyor 2 has a bracket 241 extending from both sides. The bracket 241 engages with the baffle plate 24 and blocks and limits its movement. The screen conveyor 2 has a relief groove 242 on both sides for the baffle plate 24 to rotate.

[0041] Specifically, in the initial state, the baffle plate 24 will tend to flip outward under the torsion of the torsion spring shaft 243, and the retainer 241 will limit and block the baffle plate 24, keeping it in a vertical state. At this time, the can lid can pass smoothly under the baffle plate 24. When the can lid flips, the baffle plate 24 will overcome the torsional force of the torsion spring shaft 243 and rotate into the relief groove 242. At this time, the baffle plate 24 will remain in a horizontal state and effectively block the can lid behind it.

[0042] like Figure 6 As shown, a limiting sleeve 41 extends upward from one end of the receiving conveyor platform 4. The limiting sleeve 41 is located directly below the flip plate 31, and the inner diameter of the limiting sleeve 41 is larger than the diameter of the can lid.

[0043] Specifically, after the can lid is rotated 180° along with the flipping plate 31, the can lid will remain facing upwards and located directly above the limiting sleeve 41. When the pumping stops, the can lid will fall into the limiting sleeve 41 under its own weight. The limiting sleeve 41 effectively prevents the can lid from shifting during the fall, so that the flipped can lid can fall smoothly into the receiving conveyor table 4 and be conveyed forward with its face facing upwards.

[0044] like Figure 6 and Figure 7 As shown, the feeding track 5 includes an inclined section 51 and a vertical section 52. The top of the inclined section 51 is smoothly provided with a feed inlet 511, which is connected to the end of the screening conveyor 2. The side wall of the inclined section 51 is smoothly provided with a feed inlet 512, which is connected to the end of the receiving conveyor 4. The bottom of the vertical section 52 is provided with a discharge port 521, and the discharge conveyor 6 is located at the bottom of the discharge port 521.

[0045] Specifically, when the can lid enters the feeding track 5, the feeding track 5 limits and guides the can lid, so that the can lid can always maintain the correct orientation and pass through the inclined part 51 and the vertical part 52 in sequence, and can change from a horizontal state to a vertical state. The upright can lid will fall on the discharge conveyor 6 and be conveyed out from the discharge port 521 along the discharge conveyor 6.

[0046] like Figure 7 As shown, the discharge conveyor 6 is fixed on both sides of the limiting guide rail 61 for aligning and limiting the can lids, and the discharge conveyor 6 is fixed on the top of the discharge conveyor 6. The stacking stop 63 is linearly slidably installed on the power-connected slide rail 62.

[0047] like Figure 8As shown, the stacking stop 63 includes a pressing part 631, a connecting rod 632, and an electric slide 633. The pressing part 631 abuts against the side wall of the can lid. The bottom end of the connecting rod 632 is fixedly connected to the pressing part 631, and the top end of the connecting rod 632 is fixedly connected to the electric slide 633. The electric slide 633 is linearly slidably installed on the power-connected guide rail.

[0048] Specifically, when the upright can lid is conveyed out of the discharge port 521, the limiting guide rail 61 will surround the outer circumference of the can lid to limit its movement, while the pressing part 631 will abut against the end face of the foremost can lid. In conjunction with the last end, can lids will be continuously conveyed out along the discharge conveyor table 6, so that the can lids can be gradually stacked and automatically aligned. At the same time, the electric slide 633 slides linearly along the power-connected guide rail, so that the stacked can lids can be neatly arranged and conveyed along the discharge conveyor table 6.

[0049] like Figure 1 and Figure 2 As shown, guide plates 11 are inclinedly arranged on both sides of the upper end of the feeding conveyor 1, and limit plates 12 are provided at the ends of the guide plates 11. A channel for the can lids to pass through is formed between the limit plates 12 on both sides. Protruding plates 21 are provided on the inner walls of both sides of the screening conveyor 2. A limit track is formed between the protruding plates 21 and the screening conveyor 2 to apply longitudinal movement constraint to the can lids.

[0050] Specifically, the guide plate 11 and the limiting plate 12 allow the can lids to enter the screening conveyor 2 one by one, ensuring that the conveying process proceeds in an orderly manner. After the can lids enter the screening conveyor 2, the protruding plate 21 will limit and block the can lids from the top, thereby effectively preventing the can lids from jumping during the conveying process.

[0051] The working principle of this invention is as follows: Figures 1-8As shown, during use, the stamped can lid falls onto the feeding conveyor 1 and is conveyed forward to the screening conveyor 2. When the can lid passes the flipping plate 31, the industrial camera 23 performs visual inspection on the can lid to determine whether it is facing up. When the can lid is facing up, the flipping component 3 does not operate. At this time, the can lid on the flipping plate 31 will continue to be conveyed forward by the conveying of the can lid behind. When the can lid is facing down, the air extraction pipe 34 is controlled to start extracting air according to the detection signal. Since the air extraction pipe 34 is connected to the air chamber 311 through the hollow shaft 33 and the air pipe 313, the negative pressure air nozzle 312 continuously extracts air at the upper end of the flipping plate 31 and generates negative pressure suction to hold the can lid in place. During the suction process, the continuous airflow within the suction pipe 34 drives the fan blades 345 to rotate. The fan blades 345 then drive the pivot 344 to rotate synchronously. The pivot 344, through the transmission belt 244, drives the torsion spring shaft 243 to rotate, thereby enabling the baffle plate 24 to rotate and block the can lids behind it, preventing them from affecting the flipping process. The flipping motor 35 drives the transmission gear 321 to rotate through the drive gear 351. The transmission gear 321, through the rotating shaft 32, drives the flipping plate 31 to rotate 180°, so that the can lids face up and fall onto the receiving conveyor table 4 for continued forward transport. This enables automatic detection and flipping of the can lids during the can lid conveying and feeding process. Originally, the can lids facing upwards are conveyed into the unloading track 5 via the screening conveyor 2. After being flipped, the can lids facing upwards are conveyed into the unloading track 5 via the receiving conveyor 4. The unloading track 5 provides limiting and guiding for the can lids, ensuring that all can lids are always conveyed in the correct orientation within the unloading track 5. The can lids are then changed from a horizontal to a vertical state. The upright can lids are gradually stacked and automatically aligned along the discharge conveyor 6, thus realizing an integrated conveying process for can lid loading, inspection, flipping, unloading, and discharge.

[0052] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. An automatic feeding device for a fully automatic aluminum can production line, comprising a feeding conveyor (1) and a screening conveyor (2) arranged sequentially along the can lid conveying direction, characterized in that, The screening conveyor (2) is provided with a flipping assembly (3), which includes a flipping plate (31). A mounting frame (22) is fixed on the screening conveyor (2), and an industrial camera (23) is fixed on the upper end of the mounting frame (22). The industrial camera (23) is located directly above the flipping plate (31). A baffle plate (24) is provided on the side of the flipping plate (31) near the feeding conveyor (1). The two ends of the baffle plate (24) are rotatably engaged with the screening conveyor (2) through torsion spring shafts (243). The two ends of the flipping plate (31) are respectively connected by... The rotating shaft (32) and the hollow shaft (33) are rotatably engaged with the screening conveyor (2). One end of the hollow shaft (33) is rotatably sealed with the air extraction pipe (34). When the air extraction pipe (34) is extracting air, it drives the baffle plate (24) to rotate through the torsion spring shaft (243) to block the can lid. The side wall of the screening conveyor (2) is fixedly provided with a flip motor (35). The output end of the flip motor (35) is connected to a drive gear (351). The rotating shaft (32) is fixedly provided with a transmission gear (321). The drive gear (351) meshes with the transmission gear (321). Below the screening conveyor (2) is a receiving conveyor (4) for receiving and conveying the can lids flipped by the flipping component (3). One end of the screening conveyor (2) and the receiving conveyor (4) are connected to a discharge track (5). At the bottom of the discharge track (5) is a discharge conveyor (6). The flip plate (31) is provided with an air chamber (311) inside. Negative pressure air nozzles (312) are evenly provided on the upper end of the flip plate (31). The screen conveyor (2) is provided with a card seat (241) extending on both sides. The card seat (241) is engaged with the baffle plate (24) and blocks and limits it. The screen conveyor (2) is provided with a clearance groove (242) on both sides for the baffle plate (24) to rotate. The discharge conveyor (6) is fixed with a limiting guide rail (61) on both sides for aligning and limiting the can lid. The discharge conveyor (6) is fixed with an electric sliding rail (62) above it. A stacking baffle (63) is linearly slidably installed on the electric sliding rail (62).

2. The automatic feeding equipment for a fully automatic aluminum can production line according to claim 1, characterized in that, The negative pressure nozzle (312) is connected to the air chamber (311), and the bottom end of the air chamber (311) is connected to one end of the hollow shaft (33) through the air pipe (313).

3. The automatic feeding equipment for a fully automatic aluminum can production line according to claim 1, characterized in that, A fixed seat (341) is provided on the side wall of the screening conveyor (2). The air extraction pipe (34) is fixedly installed in the fixed seat (341). A rotary joint (342) is fixedly provided at one end of the air extraction pipe (34). The hollow shaft (33) is rotatably sealed with the rotary joint (342). An outer shell (343) is provided at the upper end of the air extraction pipe (34). A fan blade (345) is provided inside the outer shell (343). The fan blade (345) is rotatably connected to the outer shell (343) through a pivot (344). The two ends of the pivot (344) are connected to the torsion spring shaft (243) through a transmission belt (244).

4. The automatic feeding equipment for a fully automatic aluminum can production line according to claim 1, characterized in that, The receiving and conveying platform (4) extends upward at one end and is provided with a limiting sleeve (41). The limiting sleeve (41) is located directly below the flip plate (31), and the inner diameter of the limiting sleeve (41) is greater than the diameter of the can lid.

5. The automatic feeding equipment for a fully automatic aluminum can production line according to claim 1, characterized in that, The feeding track (5) includes an inclined part (51) and a vertical part (52). The top of the inclined part (51) is smoothly provided with a feed inlet (511), which is connected to the end of the screening conveyor (2). The side wall of the inclined part (51) is smoothly provided with a feed inlet (512), which is connected to the end of the receiving conveyor (4). The bottom of the vertical part (52) is provided with a discharge port (521), and the discharge conveyor (6) is located at the bottom of the discharge port (521).

6. The automatic feeding equipment for a fully automatic aluminum can production line according to claim 1, characterized in that, The stacking stop (63) includes a pressing part (631), a connecting rod (632), and an electric slide (633). The pressing part (631) abuts against the side wall of the can lid. The bottom end of the connecting rod (632) is fixedly connected to the pressing part (631), and the top end of the connecting rod (632) is fixedly connected to the electric slide (633). The electric slide (633) is linearly slidably installed on the power-connected guide rail.

7. The automatic feeding equipment for a fully automatic aluminum can production line according to any one of claims 1-6, characterized in that, The feeding conveyor (1) has guide plates (11) inclined on both sides at the upper end. The guide plates (11) have limit plates (12) at their ends. The limit plates (12) on both sides form a channel for the can lids to pass through. The inner walls on both sides of the screening conveyor (2) have protruding plates (21). The protruding plates (21) and the screening conveyor (2) form a limit track to constrain the longitudinal movement of the can lids.

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