High-speed machining production line for tin can covers

Abstract

The invention discloses a high-speed machining production line for tin can covers. The high-speed machining production line comprises a punch forming unit, a can cover opening forming glue injection machine and a drying machine which are sequentially arranged. The punch forming set comprises a punch press, a forming die arranged in the punch press, an automatic feeding device for feeding materials to the forming die, and a discharging device for automatically discharging the punched and formed can cover. The tank cover opening forming glue injection machine comprises a forming rotary disc and a glue injection disc, and the forming rotary disc is provided with a circle of female die bases matched with a tank cover. An ejection device for ejecting the tank cover out of the female die holder and a guide mechanism for guiding the ejected tank cover to the glue injection disc and moving on the glue injection disc according to a set path are arranged at the joint of the forming rotary disc and the glue injection disc, and a tank cover rotary disc for driving the tank cover to rotate is arranged on the glue injection disc on the path of the tank cover. And a glue injection nozzle is arranged above the tank cover turntable. The machine is high in automation degree, high in efficiency and low in production cost, and can be widely applied to the field of machining of tin can covers.

Description

Technical Field

[0001] This invention relates to the field of packaging container processing, specifically a high-speed processing production line for tinplate can lids. Background Technology

[0002] Tin cans, as food-grade sealed containers, are widely used in the packaging of milk powder, tea, and other foods. The processing flow for tin can lids is as follows: sheet metal is cut into circles → stamping → trimming waste edges → folding the lid opening → forming the lid opening → expanding the lid opening with threads → applying sealant to the inside of the lid → heat curing in a dryer. In the existing processing method, the sheet metal is cut into circles and stamped in one mold, then moved to the next mold for trimming waste edges. The can is then manually rotated sequentially to the folding mold, forming mold, sealing rib forming mold, and sealant application device for further processing. This process is time-consuming, inefficient, and labor-intensive. Furthermore, the rotation process can cause scratches on the lids, resulting in product scrap. Therefore, a continuous processing production line needs to be developed to improve processing efficiency and reduce labor costs. Summary of the Invention

[0003] The purpose of this invention is to provide a high-speed processing production line for tinplate can lids, which solves the problems of discontinuous processing, low processing efficiency, and high cost of existing tinplate can lid processing equipment.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a high-speed processing production line for tinplate can lids, comprising a stamping and forming unit, a can lid mouth forming and gluing machine and a dryer arranged in sequence; The stamping forming assembly includes a punch press, a forming die set inside the punch press, an automatic feeding device for feeding the forming die, and an unloading device for automatically discharging the stamped can lid; the automatic feeding device includes a feeding platform, which is equipped with a main feeder that delivers the sheet to the initial stamping position and a secondary feeder that receives the main feeder and continues to push the sheet forward. The main feeder and the secondary feeder work together to continuously and uninterruptedly convey the sheet forward for stamping forming; The discharge device includes a receiving and flipping mechanism located behind the punch press to receive can lids and adjust their direction for forward conveying, and a discharging mechanism to separate the can lids from the forming mold and allow them to enter the receiving and flipping mechanism. The receiving and flipping mechanism is connected to a first power conveying device that keeps the can lids facing upwards and conveys them forward. The first power conveying device is connected to a feeding waiting area of ​​a can lid opening forming and dispensing machine, and the feeding waiting area is connected to a feeding channel. The can lid forming and dispensing machine includes a forming turntable and a dispensing plate. The forming turntable is provided with a ring of die seats that are adapted to the can lid. A punch block that moves up and down is provided above the forming turntable. The punch block is provided with a push block that pushes the can lid in the feeding channel into the die seat. At the junction of the forming turntable and the dispensing plate, there is an ejector device that ejects the can lid from the die seat and a guide mechanism that guides the ejected can lid to the dispensing plate and moves it on the dispensing plate according to a set path. The dispensing plate is provided with a can lid turntable that drives the can lid to rotate along the path of the can lid. A dispensing nozzle is provided above the can lid turntable. A second power conveying device is provided between the guiding mechanism and the dryer. The automatic feeding device is also equipped with a stacking platform and a transfer robot for transferring the material sheets from the stacking platform to the feeding platform.

[0005] To improve efficiency, the forming die can complete three processes in one go: sheet metal cutting, stamping, and waste trimming. The stamping block is equipped with a can lid folding punch, a can lid forming punch, and a can lid flaring punch. The stamping block can complete the can lid folding, can lid forming, and can lid flaring punches for three can lids in one press. The can lids pass through the can lid folding punch, can lid forming punch, and can lid flaring punch in sequence under the drive of the forming turntable.

[0006] To facilitate the rapid separation and transfer of the can lid from the forming mold, the receiving and flipping mechanism includes a receiving box. The opening size of the receiving box is adapted to the can lid, and the height of the receiving box is between the height of the upper punch and lower die of the forming mold when they separate and the height of the upper punch when it reaches its upper apex. The upper punch of the forming mold is equipped with an adsorption structure that holds the can lid in place and moves it upwards with the upper punch. The receiving box is connected to a flipping cage, which includes a set of guide bars. The outlet of the flipping cage is connected to a first power conveying device.

[0007] Furthermore, the material receiving mechanism includes a high-pressure air nozzle, which is positioned directly opposite the receiving box and located on the other side of the forming mold. Under the blowing force of the high-pressure air nozzle, the can cover separates from the upper punch of the forming mold and enters the receiving box, where it slides forward under the action of inertial force.

[0008] To ensure accurate forward feeding of the material sheet, the feeding platform is equipped with a set of limit pins to prevent the material sheet from swinging and a set of magnets to make the material sheet adhere to the feeding platform. The main feeder and the auxiliary feeder are respectively connected to drive screws. The auxiliary feeder includes a movable pusher head, which remains horizontal under pressure.

[0009] To ensure that the can lid feeding and stamping are synchronized, a limiting adsorption surface is provided on the opposite side of the feeding channel relative to the feeding waiting area to hold the can lid. A blowing nozzle is provided on the feeding waiting area to blow the can lid toward the feeding channel. Under the combined action of the blowing force of the blowing nozzle and the adsorption force of the limiting adsorption surface, the can lid is transferred from the feeding waiting area to the feeding channel and adsorbed on the limiting adsorption surface. Then, under the action of the push block, the can lid is pressed into the lower die seat.

[0010] To facilitate the smooth ejection of the can lid, the ejection device includes a movable disc that can move up and down within the die holder. A push rod is located below the movable disc. When no force is applied, the movable disc is flush with the bottom of the die holder. Below the forming turntable is a travel path that cooperates with the other end of the push rod. By controlling the height of the travel path, the lifting and lowering of the movable disc is controlled, thereby ejecting the can lid from the die holder and placing it above the die holder.

[0011] To facilitate the smooth transfer of the ejected can lid to the injection tray, the guiding mechanism includes a rotating chuck mounted on the injection tray and rotating synchronously with the molding turntable. The rotating chuck is provided with a set of arc-shaped slots that fit the can lid. The injection tray is also provided with guide ribs that cooperate with the rotating chuck. The guide ribs extend all the way to the molding turntable to guide the can lid ejected from the die seat to the injection tray and move on the injection tray under the drive of the rotating chuck.

[0012] To increase the running speed of the stamping block, the stamping block is connected to a camshaft that drives the stamping block to move up and down, and a drive motor that drives the camshaft to rotate is also provided.

[0013] The beneficial effects of this invention are as follows: By setting automatic feeding and discharging devices before and after the punch press, this invention achieves automated operation of the punch press. A first power conveyor transports the stamped can lids to a can lid forming and glue-injecting machine for can mouth forming and glue injection. Then, a second power conveyor feeds the lids into a dryer for drying, thus achieving automation and continuous operation of the entire production line, reducing labor costs and improving production efficiency. The automatic feeding device uses a main feeder and an auxiliary feeder for uninterrupted feeding, eliminating the need for the punch press to stop and wait between two sheets, enabling continuous stamping and improving production efficiency. Simultaneously, the forming die can complete the three processes of sheet cutting, stamping, and waste trimming in one operation, further improving production efficiency. The discharging device uses a high-pressure air nozzle in conjunction with a flip-top cage to achieve rapid discharging and repositioning of the can lids, which is fast, requires no manual operation, and is simple and efficient. The can opening forming process employs a rotating disc and a stamping block. A single press of the stamping block can complete the flanging, forming, and toothing of three can lids, thereby increasing the forming speed. Simultaneously, the stamping block is driven by a motor and camshaft, significantly improving its operating speed compared to traditional punch presses. The combined structure of the forming turntable and the glue-dispensing disc enables automatic can lid transfer. A can lid turntable is mounted on the glue-dispensing disc, working with glue nozzles to automatically dispense glue. This high degree of automation, coupled with maintaining speed consistency with the forming turntable and the stamping block's motor drive, achieves high-speed operation and improves production efficiency. Therefore, this invention provides a can lid production line with a high degree of automation and high efficiency.

[0014] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0015] Figure 1 This is a perspective view of the production line of the present invention.

[0016] Figure 2 This is a top view of the production line of the present invention.

[0017] Figure 3 This is a perspective view of the automatic feeding device in this invention.

[0018] Figure 4 This is a perspective view of the assembly of the main feeder and the auxiliary feeder in this invention.

[0019] Figure 5 This is a cross-sectional view of the auxiliary feeder in this invention.

[0020] Figure 6 This is a perspective view of the molding die in this invention.

[0021] Figure 7 This is a side view of the molding die in this invention.

[0022] Figure 8This is a side view of the steering wheel in this invention.

[0023] Figure 9 This is a perspective view of the can lid forming and dispensing machine of the present invention.

[0024] Figure 10 For the present invention Figure 8 A magnified schematic diagram of part A.

[0025] Figure 11 This is a schematic diagram showing the positions of the can lid opening folding punch, the can lid opening forming punch, and the can lid opening tooth expansion punch in this invention.

[0026] Figure 12 This is a top view of the can lid forming and dispensing machine of the present invention.

[0027] Figure 13 This is a schematic diagram of the walking trajectory in this invention.

[0028] Figure 14 This is a schematic diagram of the driving connection of the stamping block in this invention.

[0029] Figure 15 This is a schematic diagram of the driving connection between the forming turntable and the rotating chuck in this invention. Detailed Implementation

[0030] Examples, such as Figures 1 to 15 As shown, a high-speed tinplate can lid processing production line includes a stamping and forming unit 100, a can lid mouth forming and glue injection machine 200, and a dryer 300 arranged in sequence. The production process is automated through a connecting structure. At the same time, the stamping and forming unit 100 is optimized and adjusted to increase the stamping and forming speed. The can lid mouth forming and glue injection machine 200 is designed to achieve high-speed operation of can lid mouth forming and glue injection, thereby increasing the speed of the entire production line.

[0031] Specifically, the stamping forming assembly 100 includes a punch press 1, a forming die 2 disposed in the punch press 1, an automatic feeding device 3 for feeding the forming die 2, and an unloading device 4 for automatically discharging the stamped can lid.

[0032] The automatic feeding device 3 includes a stacking platform 31 and a feeding platform 32 arranged side by side. The stacking platform 31 is used to neatly stack the printed patterned sheets together, and the feeding platform 32 is used to continuously feed the material into the punch press 1 for stamping and forming. A transfer robot 33 is also provided to transfer the sheet from the stacking platform 31 to the feeding platform 32.

[0033] The stacking platform 31 is equipped with side limiting posts 311 and rear limiting plates 312, which determine the stacking position of the material sheets. The stacking platform 31 is connected to a lifting screw 313 that drives the platform up and down, and also includes a material sheet position sensor 314 for sensing the material sheet height. When the material sheet position sensor 314 does not detect a material sheet, it controls the lifting screw 313 to move upwards; when it detects a material sheet, it stops moving. The transfer robot 33 includes a horizontal sliding block 331 mounted on a frame, and a translation cylinder 332 that drives the horizontal sliding block 331 to move back and forth. The horizontal sliding block 331 is equipped with a movable plate 333 that moves up and down, and a lifting cylinder 334 that drives the movable plate 333 to move up and down. A set of negative pressure suction nozzles 335 are evenly distributed on the movable plate 333. When material needs to be picked up, the translation cylinder 332 pushes the transverse slider 331 to the top of the material on the stacking platform 31. Then, the lifting cylinder 334 drives the movable plate 333 to descend to the top of the material. At the same time, the negative pressure suction nozzle 335 opens to suck up the material on the stacking platform 31. Then the movable plate 333 moves up, and the translation cylinder 332 pulls the transverse slider 331 back to the top of the feeding platform 32. After the material on the feeding platform 32 leaves the dropping area, the negative pressure suction nozzle 335 closes, and the material loses its suction force and automatically falls to the feeding platform 32 below.

[0034] The feeding platform 32 is equipped with a main feeder 321 that propels the sheet forward from its initial position and a secondary feeder 322 that receives the main feeder 321 and continues to propel the sheet forward. The main feeder 321 and the secondary feeder 322 work together to continuously and uninterruptedly convey the sheet forward for stamping. To ensure feeding accuracy, the main feeder 321 and the secondary feeder 322 are each connected to a drive screw 325, which drives the main feeder 321 and the secondary feeder 322 to move back and forth. The main feeder 321 is provided with a fixed stop 3211 that protrudes from the surface of the feeding platform 32 and acts on the end of the material sheet. To ensure that the auxiliary feeder 322 does not obstruct the forward movement of the material sheet coming from the rear, the auxiliary feeder 322 is provided with a movable stop 3221. A push-out spring 3222 is provided between the movable stop 3221 and the auxiliary feeder 322. The upper surface of the movable stop 3221 is an arc surface with a lower rear end and a higher front end. Figure 5As shown, when the movable stop 3221 is not under force, it extends beyond the feeding platform 32 under the action of spring force, allowing for material pushing. When the sheet moves forward from the rear end, the material belt presses the movable stop 3221 down along the arc surface of the upper surface. Under the pressure, the movable stop 3221 overcomes the spring force and moves downward to be flush with the feeding platform 32, allowing the sheet to pass smoothly through the movable stop 3221. When the sheet moves forward to the front end of the movable stop 3221, the movable stop 3221 is no longer under force and extends outward. At this time, the main feeder 321 is pulled back to its initial position to receive the next sheet. The existing sheet is then moved forward by the auxiliary feeder 322 to complete the stamping of the entire sheet. Then, the auxiliary feeder 322 returns to its initial position. The initial position of the auxiliary feeder 322 is located in front of the material dropping area of ​​the feeding platform 32. The material dropping area refers to the area covered by the transfer robot 33 placing the sheet on the feeding platform 32.

[0035] To ensure the sheet moves along the set direction, a set of limiting pins 323 are provided on the feeding platform 32 to prevent the sheet from swinging. The limiting pins 323 are arranged in two rows, and the width between the two rows of limiting pins 323 is adapted to the width of the sheet to be stamped. The feeding platform 32 is also provided with two rows of magnets 324. Under the action of the magnets 324, the sheet is attracted to the feeding platform 32. When the sheet moves forward under the push of the main feeder 321 or the auxiliary feeder 322, under the action of the magnetic attraction force, it can always keep the pushing distance of the main feeder 321 or the auxiliary feeder 322 consistent. It will not continue to move forward due to inertia when the main feeder 321 or the auxiliary feeder 322 stops pushing forward, thus ensuring the accuracy of feeding.

[0036] The forming die 2 includes a lower concave die 21 fixed to the punch press 1 and an upper convex die 22 that moves up and down. The upper convex die 22 is provided with an adsorption structure that picks up the stamped can lid and moves it upward together. This adsorption structure can be a magnet or a negative pressure adsorption.

[0037] The discharge device 4 includes a receiving and flipping mechanism 41 located behind the punch press 1, which receives the can lid and adjusts its direction to convey it forward, and a discharging mechanism 42 that separates the can lid from the forming mold 2 and allows it to enter the receiving and flipping mechanism 41. The receiving and flipping mechanism 41 includes a receiving box 411, the opening size of which is adapted to the can lid. The height of the receiving box 411 is between the height of the upper punch 22 when it disengages from the lower die 21 and the height of the upper punch 22 when it reaches its upper apex. Preferably, it is positioned when the upper punch 22 reaches its upper apex, at which point the punch press will have its slowest running speed, facilitating the discharging mechanism 42 to smoothly deliver the can lid into the receiving box 411. The discharging mechanism 42 preferably uses a high-pressure air nozzle 421, but a pusher plate can also be used. The high-pressure air nozzle 421 is positioned directly opposite the receiving box 411 and located on the other side of the upper punch 22. Under the blowing force of the high-pressure air nozzle 421, the can cover overcomes the adsorption force of the upper punch 22, separates from the upper punch 22, enters the receiving box 411, and slides forward under the action of inertial force.

[0038] To adjust the downward-facing can lid to an upward-facing opening and convey it forward, a flip-top cage 412 is connected to the receiving box 411. The flip-top cage 412 includes a set of guide bars 4121. The outlet of the flip-top cage 412 is connected to the first power conveying device 5, which smoothly conveys the can lid forward. To reduce friction, the receiving box 411 is made of stainless steel, and the guide bars 4121 are made of circular stainless steel. The twisting of the guide bars 4121 adjusts the direction of the can lid. The first power conveying device 5 preferably uses a horizontal conveyor belt. The can lid moves forward under the drive of the horizontal conveyor belt, thus ensuring smooth operation and maintaining the can lid's initial position on the conveyor belt.

[0039] As another can lid adjustment structure, a steering disk 413 can be installed above the discharge end of the receiving box 411. The steering disk 413 is equipped with magnets. When the can lid moves above the steering disk 413, the magnets on the steering disk 413 attract the can lid and move it upwards. The top of the steering disk 413 connects to the first power conveying device 5. When the can lid is moved to the top of the steering disk 413, the opening of the can lid is adjusted to face upwards. At this time, the first power conveying device 5 moves the can lid away from the steering disk 413. To facilitate the transfer, the width of the steering disk 413 is smaller than the width of the can lid, and second guide strips 414 are installed on both sides of the top of the steering disk 413 to guide the can lid onto the first power conveying device 5.

[0040] The can lid forming and dispensing machine 200 includes a base 201, a rotatable forming turntable 8 mounted on the base 201, and a dispensing disc 9 fixed to the base 201 on one side of the forming turntable 8. A ring of die holders 10 adapted to fit the can lid is provided on the forming turntable 8, and the can lid is placed inside the die holder 10. The die holder 10 is detachably mounted on the forming turntable 8, and different die holders 10 can be processed and replaced according to different sizes of can lids. Above the forming turntable 8, there is a vertically moving stamping block 11. The stamping block 11 is sequentially equipped with a can lid rim folding punch 111, a can lid rim forming punch 112, and a can lid rim expansion punch 113. The stamping block 11 can complete the rim folding, can lid rim forming, and can lid rim expansion punch of the three can lids in one press. The can lid passes through the can lid rim folding punch 111, the can lid rim forming punch 112, and the can lid rim expansion punch 113 in sequence under the drive of the forming turntable 8, thereby completing the processing and forming of the entire can lid rim.

[0041] To enable high-speed up-and-down movement of the stamping block 11 and achieve rapid stamping, a drive motor 13 is installed inside the base 201. The drive motor 13 is connected to a rotating shaft 131 via a transmission belt. A camshaft 12 is connected to the lower end of the stamping block 11, and a cam 121 is installed on the camshaft 12. The lower end of the stamping block 11 is connected to the cam 121. The rotation of the camshaft 12 drives the stamping block 11 to move up and down. A camshaft rotating gear 122 is installed on the camshaft 12, and a camshaft drive gear 132 is installed on the rotating shaft 131 that meshes with the camshaft rotating gear 122 to drive the camshaft 12 to rotate. A turntable drive gear 133 is also provided on the rotating shaft 131. The forming turntable 8 is connected to a turntable drive shaft 81 that drives the forming turntable 8 to rotate. A commutator 82 is provided inside the base 201. The other end of the turntable drive shaft 81 is mounted on the commutator 82. A driven gear 821 that meshes with the turntable drive gear 133 is provided on the input shaft of the commutator 82. The drive motor 13 rotates, synchronously driving the stamping block 11 to complete one stamping and the forming turntable 8 to complete one rotation, thereby achieving precise coordination. Using the drive motor 13 to drive the stamping block 11 can greatly improve the running speed of the stamping block 11.

[0042] To ensure accurate feeding of the stamping block 11, the stamping block 11 is equipped with a pusher block 12 that pushes the can lid into the lower die holder 10. To ensure that the can lids from the first power conveying device 5 enter the pusher block 12 one by one in an orderly manner, the first power conveying device 5 is connected to a feeding waiting area 6 of the can lid forming injection molding machine 200. The feeding waiting area 6 is a non-powered structure; the can lids enter the feeding waiting area 6 and then move forward in a queue. A feeding channel 7 is connected to the feeding waiting area 6, located below the pusher block 12. To ensure that the can lids enter the feeding channel 7 one by one and remain at the entrance of the feeding channel 7, and then enter the die holder 10 under the action of the pusher block 12, the feeding channel 7 is provided with a limiting suction surface 71 on the opposite side of the feeding waiting area 6 to hold the can lids. The feeding waiting area 6 is equipped with a blowing nozzle 61 to blow the can lids towards the feeding channel 7. The can lid is transferred from the feeding waiting area 6 to the feeding channel 7 by the combined action of the blowing force of the blowing nozzle 61 and the adsorption force of the limiting adsorption surface 71, and then adsorbed on the limiting adsorption surface 71. Then, under the action of the push block 12, the can lid is pressed into the lower die seat 10. A blocking cylinder 18 is also provided at the position of the blowing nozzle 61. When the foremost can lid passes the position of the blocking cylinder 18, the blocking cylinder 18 works to block the can lid behind it and prevent it from moving forward. When the can lid in front is pushed into the die seat 10 by the push block 12, the blocking cylinder 18 opens, allowing the next can lid to enter and stay at the entrance of the feeding waiting area 6 under the combined action of the blowing force of the blowing nozzle 61 and the adsorption force of the limiting adsorption surface 71. This structure can ensure that the can lids enter the die seat 10 one by one and keep synchronized with the operation of the stamping block 11, improving accuracy.

[0043] To facilitate the smooth transfer of the can lid after molding to the glue injection tray 9 and the completion of glue injection on the glue injection tray 9, the connection between the molding turntable 8 and the glue injection tray 9 is provided with an ejector device 13 to eject the can lid from the cavity mold base 10 and a guide mechanism 14 to guide the ejected can lid to the glue injection tray 9 and move it on the glue injection tray 9 according to a set path. The glue injection tray 9 is provided with a can lid turntable 15 that drives the can lid to rotate on its own along the path of the can lid. A glue injection nozzle 16 is provided above the can lid turntable 15.

[0044] The ejection device 13 includes a movable disc 101 that can move up and down within the die holder 10. A push rod 131 is located below the movable disc 101. When no force is applied, the movable disc 101 is flush with the bottom of the die holder 10, facilitating the stamping and forming of the can opening. Below the forming turntable 8 is a travel path 132 that cooperates with the other end of the push rod 131. By controlling the height of the travel path 132, the lifting and lowering of the movable disc 101 is controlled, thereby ejecting the can lid from the die holder 10 so that it protrudes above the die holder 10.

[0045] The guiding mechanism 14 includes a rotating chuck 141 mounted on the injection platen 9 and rotating synchronously with the molding turntable 8. The rotating chuck 141 has a set of arc-shaped slots 1411 adapted to the can lid. The injection platen 9 also has guide ribs 142 that cooperate with the rotating chuck 141. The guide ribs 142 extend onto the molding turntable 8, guiding the can lid ejected from the die holder 10 onto the injection platen 9 and moving on the injection platen 9 under the drive of the rotating chuck 141. To ensure synchronization, the rotating shaft of the rotating chuck 141 is connected to the turntable drive shaft 81 via a chain drive.

[0046] The can lid turntable 15 is driven by an independent motor. When the rotating chuck 141 moves the can lid onto the can lid turntable 15, the can lid turntable 15 rotates, and at the same time, the glue injection nozzle 16 opens to inject glue. To ensure that the can lid and the can lid turntable 15 rotate synchronously, an adsorption magnet can be installed on the can lid turntable 15 to attract the can lid onto the can lid turntable 15 for synchronous rotation.

[0047] A second power conveying device 17 is provided between the guiding mechanism 14 and the dryer 300. The second power conveying device 17 is preferably a horizontal conveyor belt. After the sealant is applied, the can lid enters the dryer 300 under the drive of the second power conveying device 17 to dry the sealant. This invention has a high degree of automation, high efficiency, and good reliability, significantly reducing the production cost of tin can lids.

[0048] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A high speed processing production line for tinplate can ends, characterized in that: The application relates to a stamping and forming machine group (100), a can lid mouth forming and glue injecting machine (200) and a drying machine (300) which are sequentially arranged. The stamping and forming group (100) comprises a punch (1), a forming die (2) arranged in the punch (1), an automatic feeding device (3) for feeding the forming die (2) and a discharging device (4) for automatically discharging the stamping and forming can lid; the automatic feeding device (3) comprises a feeding platform (32), the feeding platform (32) is provided with a main feeding sub (321) for pushing the material sheet from an initial position forward and a secondary feeding sub (322) for continuing to push the material sheet forward after the material sheet is received by the main feeding sub (321), the main feeding sub (321) and the secondary feeding sub (322) are matched to continuously and uninterruptedly feed the material sheet forward for stamping and forming; The discharging device (4) comprises a receiving and overturning mechanism (41) arranged behind the punch (1) and receiving the can lid and adjusting the direction of the can lid to forwardly convey and a discharging mechanism (42) for separating the can lid from the forming die (2) and entering the receiving and overturning mechanism (41), the receiving and overturning mechanism (41) is provided with a first power conveying device (5) for conveying the can lid with the opening upward; the first power conveying device (5) is provided with a feeding waiting area (6) of the can lid mouth forming and glue injecting machine (200), and the feeding waiting area (6) is provided with a feeding channel (7); The can lid mouth forming and glue injecting machine (200) comprises a forming turntable (8) and a glue injecting disc (9), the forming turntable (8) is provided with a circle of recessed die seats (10) matched with the can lid, the forming turntable (8) is provided with a stamping block (11) moving up and down, the stamping block (11) is provided with a push block (12) for pushing the can lid in the feeding channel (7) into the recessed die seat (10); the connection part of the forming turntable (8) and the glue injecting disc (9) is provided with a ejection device (13) for ejecting the can lid from the recessed die seat (10) and a guide mechanism (14) for guiding the ejected can lid to the glue injecting disc (9) and moving on the glue injecting disc (9) according to a set path, the glue injecting disc (9) is provided with a can lid turntable (15) for driving the can lid to rotate on the passing path of the can lid, the top of the can lid turntable (15) is provided with a glue injecting nozzle (16); The guide mechanism (14) is provided with a second power conveying device (17) between the guide mechanism (14) and the drying machine (300).

2. The tin can lid high-speed processing production line according to claim 1, characterized in that: The automatic feeding device (3) is further provided with a material stacking platform (31) and a transfer manipulator (33) for transferring the material sheet from the material stacking platform (31) to the feeding platform (32).

3. The tin can lid high-speed processing production line according to claim 1, characterized in that: The forming die (2) can complete the three processes of plate cutting, stamping forming and waste edge cutting at one time; the stamping block (11) is sequentially provided with a can lid opening flanging punch (111), a can lid opening forming punch (112) and a can lid opening tooth expanding punch (113), and one-time pressing of the stamping block (11) can complete the can lid opening flanging, can lid opening forming and can lid opening tooth expanding of three can lids respectively, and the can lids are sequentially passed through the can lid opening flanging punch (111), the can lid opening forming punch (112) and the can lid opening tooth expanding punch (113) under the driving of the forming turntable (8).

4. The tin can lid high-speed processing production line according to claim 1, characterized in that: The receiving and overturning mechanism (41) comprises a receiving box (411), the opening size of the receiving box (411) is matched with the can lid, the height of the receiving box (411) is between the height position when the upper punch (22) of the forming die (2) is separated from the lower die (21) and the height position when the upper punch (22) runs to the upper vertex; the upper punch (22) of the forming die (2) is provided with an adsorption structure for adsorbing the can lid and moving upward with the upper punch (22); the receiving box (411) is provided with a cover cage (412) in connection, the cover cage (412) comprises a group of guide strips (4121), and the discharge port of the cover cage (412) is connected with the first power conveying device (5).

5. The tin can lid high-speed processing production line according to claim 4, characterized in that: The discharging mechanism (42) comprises a high-pressure air nozzle (421), the high-pressure air nozzle (421) is arranged opposite to the receiving box (411) and located on the other side of the upper punch (22); under the blowing force of the high-pressure air nozzle (421), the can lid is separated from the upper punch (22) and enters the receiving box (411) and slides forward under the action of inertial force.

6. The tin can lid high-speed processing production line according to claim 1, characterized in that: A group of limiting pins (323) for preventing the material sheet from swinging and a group of magnets (324) for making the material sheet adhere to the feeding platform (32) are arranged on the feeding platform (32), the main feeding sub (321) and the auxiliary feeding sub (322) are respectively connected with driving lead screws (325), and the auxiliary feeding sub (322) comprises a movable push head (321) which is kept horizontal under pressure.

7. The tin can lid high-speed processing production line according to claim 1, characterized in that: The feeding channel (7) is provided with a limiting adsorption surface (71) for adsorbing the can lid opposite to the feeding waiting area (6), the feeding waiting area (6) is provided with a material blowing air nozzle (61) for blowing the can lid to the feeding channel (7); under the combined action of the blowing force of the material blowing air nozzle (61) and the adsorption force of the limiting adsorption surface (71), the can lid is transferred from the feeding waiting area (6) to the feeding channel (7) and adsorbed on the limiting adsorption surface (71), and then the can lid is pressed into the lower die seat (10) under the action of the push block (12).

8. The tin can lid high-speed processing production line according to claim 1, characterized in that: The ejection device (13) comprises a movable disc (101) arranged in the recessed die seat (10) and movable up and down, a top rod (131) arranged below the movable disc (101), and the movable disc (101) is flush with the bottom of the recessed die seat (10) when not under force; the lower portion of the forming turntable (8) is provided with a walking track (132) matched with the other end of the top rod (131), the height of the walking track (132) is controlled to control the lifting of the movable disc (101), and then the can cover in the recessed die seat (10) is ejected to be higher than the recessed die seat (10).

9. The tin can lid high-speed processing production line according to claim 1, characterized in that: The guide mechanism (14) comprises a rotating chuck (141) mounted on the glue injection disc (9) and rotating synchronously with the forming turntable (8), a group of arc-shaped clamping holes (1411) matched with the can cover are arranged on the rotating chuck (141), guide ribs (142) matched with the rotating chuck (141) are further arranged on the glue injection disc (9), the guide ribs (142) extend to the forming turntable (8) to guide the can cover ejected from the recessed die seat (10) to the glue injection disc (9) and move on the glue injection disc (9) under the driving of the rotating chuck (141).

10. The tin can lid high-speed processing production line according to claim 1, characterized in that: The punch block (11) is connected with a cam shaft (12) for driving the punch block (11) to move up and down, and a driving motor (13) for driving the cam shaft (12) to rotate is further arranged.

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