Double-station automatic cover feeding and can sealing mechanism

Abstract

The invention discloses a double-station automatic cover feeding and can sealing mechanism which comprises a rack, a feeding conveying belt, a discharging conveying belt, a vacuumizing and nitrogen filling can sealing mechanism, can lifting mechanisms, a can moving mechanical arm and a cover conveying mechanism, the feeding conveying belt and the discharging conveying belt are installed on the rack, and the two can lifting mechanisms are arranged between the feeding conveying belt and the discharging conveying belt. A vacuumizing and nitrogen filling can sealing mechanism is arranged over each can lifting mechanism, a cover conveying mechanism is arranged on one side of each vacuumizing and nitrogen filling can sealing mechanism, and a can moving mechanical arm is installed on the rack. According to the cover feeding mechanism, one cover feeding mechanism is arranged on one side of each vacuumizing and nitrogen filling can sealing mechanism, so that the two vacuumizing and nitrogen filling can sealing mechanisms can feed covers at the same time, and the production efficiency can be effectively improved.

Description

Technical Field

[0001] This invention relates to the technical field of packaging machinery, and in particular to the technical field of vacuum sealing machines. Background Technology

[0002] A can sealing machine is a machine used to seal the opening of a can. The types of can sealing machines vary depending on the type of lid. They can generally be divided into: general-purpose can sealing machines, square can sealing machines, and irregular-shaped can sealing machines. With the increasing requirements for shelf life in industries such as food, pharmaceuticals, and daily chemicals, vacuum can sealing machines and vacuum nitrogen-filled can sealing machines have emerged.

[0003] Existing patent CN118651809A discloses an automatic vacuum nitrogen-sealing can machine and its usage method, including a placement platform. A placement disc is rotatably connected to the center of the placement platform for placing cans to be sealed. A mounting bracket is provided on one side of the placement platform, and a telescopic rod is fixedly connected to the mounting bracket. The lower end of the telescopic rod is connected to the can sealing head. Symmetrically arranged long plates are also fixedly connected to the mounting bracket, and a moving mechanism is provided on the long plates. A clamping mechanism is provided on the moving mechanism. A second mounting bracket is provided on the other side of the placement platform, and a discharge mechanism is provided on the second mounting bracket. The discharge mechanism is connected to the moving mechanism through a transmission mechanism. It has only one workstation and has low production efficiency.

[0004] To address the issue of low efficiency, existing patent CN119683550A discloses a fully automatic multi-station can sealing device with vacuuming and nitrogen filling functions. This device includes a machine base with a feeding conveyor belt and a discharging conveyor belt arranged side-by-side. A main support is positioned between the feeding and discharging conveyors on the machine base. Multiple secondary lifting, vacuuming, nitrogen filling, and sealing mechanisms and can body pushing mechanisms are mounted on the main support. Along the feeding direction of the feeding conveyor belt, a can body separating and positioning mechanism, a can lid feeding and pressing mechanism, and an internal blocking mechanism are sequentially arranged on the machine base. While it has multiple stations, all stations share a single lid feeding mechanism, resulting in low lid feeding efficiency, which affects the overall production efficiency of the device. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the prior art by proposing a dual-station automatic can-sealing mechanism, which enables the device to have two stations, each equipped with a cap-feeding mechanism, thus effectively improving production efficiency.

[0006] To achieve the above objectives, this invention proposes a dual-station automatic can-filling and sealing mechanism, comprising a frame, a feeding conveyor belt, a discharging conveyor belt, a vacuum nitrogen-filling and sealing mechanism, a can-lifting mechanism, a can-transferring robot, and a can-delivering mechanism. The feeding conveyor belt and the discharging conveyor belt are mounted on the frame, and two can-lifting mechanisms are provided between the feeding conveyor belt and the discharging conveyor belt. A vacuum nitrogen-filling and sealing mechanism is located directly above each can-lifting mechanism, and a can-delivering mechanism is located on one side of each vacuum nitrogen-filling and sealing mechanism. A can-transferring robot is mounted on the frame.

[0007] Preferably, two parallel elongated baffles are provided above the feeding conveyor belt, with the length direction of the baffles parallel to the conveying direction of the feeding conveyor belt. Two parallel pneumatic telescopic rods are provided on one side of the feeding conveyor belt, with the distance between the two pneumatic telescopic rods being 1.05-1.2 times the diameter of the tank. The distance between the downstream pneumatic telescopic rod and the end of the feeding conveyor belt is greater than the outer diameter of the tank. A sensing device is provided on the side of the feeding conveyor belt, located downstream of the first starting telescopic rod.

[0008] Preferably, the vacuuming, nitrogen filling, and sealing mechanism consists of a fixed box, a nitrogen filling pipeline, and a sealing assembly. The fixed box is located above the lifting mechanism, and a can penetration hole is provided below the fixed box. The nitrogen filling pipeline is installed on the fixed box, and the sealing assembly is installed on the fixed box. The sealing assembly includes a power mechanism located at the top of the fixed box and a crimping sealing assembly located inside the fixed box. The power mechanism drives the crimping sealing assembly to move.

[0009] Preferably, the lid feeding mechanism includes a lid placing frame, a vacuum suction cup robot, a lid placing plate, and a push-pull cylinder. The lid placing frame is provided with a vacuum suction cup robot and a lid placing plate. The lid placing plate is provided with a placement hole for placing the lid. The vacuum suction cup robot is used to transfer the lid in the lid placing frame to the placement hole. The lid placing plate is connected to a push-pull cylinder, which drives the lid placing plate to move horizontally. The movement trajectory of the placement hole passes directly below the can penetration hole.

[0010] Preferably, guide rods are provided on both sides of the cover plate, and sliding sleeves that cooperate with the guide rods are provided on the cover plate, with the sliding sleeves fitted onto the guide rods.

[0011] Preferably, the lifting mechanism consists of a first cylinder, a second cylinder, a connecting rod, a lifting plate, and an air extraction cylinder. The piston rod of the first cylinder is connected to the cylinder body of the second cylinder. A vertically arranged connecting rod is connected to the cylinder body of the second cylinder. A can-placement plate is fixed to the top of the connecting rod. The piston rod of the second cylinder is connected to an air extraction cylinder. The upper end of the air extraction cylinder is open. An air extraction pipe is connected to the air extraction cylinder. The bottom wall of the air extraction cylinder is slidably mounted on the connecting rod. The connecting rod penetrates the bottom wall of the air extraction cylinder. A sealing component is provided between the bottom wall of the air extraction cylinder and the connecting rod. When the air extraction cylinder is in contact with the bottom end of the fixed box, the air extraction cylinder surrounds the can-penetrating hole.

[0012] Preferably, the can-transferring robot is a horizontally moving robot, and the direction of movement of the can-transferring robot is parallel to the conveying direction of the feeding conveyor belt. The movement path of the can-transferring robot passes through the discharge end of the feeding conveyor belt and the feed end of the discharge conveyor belt.

[0013] Preferably, the conveying direction of the discharge conveyor belt is parallel to the conveying direction of the feed conveyor belt.

[0014] Preferably, the system also includes a control device, which controls the feeding conveyor belt, the discharging conveyor belt, the vacuuming and nitrogen filling sealing mechanism, the lifting mechanism, the can-moving robot, and the cap-feeding mechanism.

[0015] The beneficial effects of the present invention are as follows: By setting a cap feeding mechanism on one side of each vacuuming nitrogen filling and sealing mechanism, the two vacuuming nitrogen filling and sealing mechanisms can perform cap feeding operations simultaneously, which can effectively improve production efficiency; the setting of the can-moving robot arm enables the device to realize automatic movement of the can, which improves production efficiency.

[0016] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a front view of the dual-station automatic can-sealing mechanism of the present invention; Figure 2 This is a side cross-sectional view of the dual-station automatic can-sealing mechanism of the present invention.

[0018] In the diagram: 1-Feeding conveyor belt, 2-Discharge conveyor belt, 3-Vacuum filling and nitrogen sealing mechanism, 4-Lid delivery mechanism, 5-Lifting mechanism, 6-Can transfer robot, 11-Pneumatic telescopic rod, 12-Induction device, 30-Nitrogen filling pipeline, 31-Fixing box, 32-Power mechanism, 33-Sealing assembly, 41-Lid placement frame, 42-Vacuum suction cup robot, 43-Lid placement plate, 44-Push-pull cylinder, 45-Guide rod, 46-Sliding sleeve, 51-First cylinder, 52-Second cylinder, 53-Connecting rod, 54-Lifting plate, 55-Evacuation cylinder. Detailed Implementation

[0019] Example 1: See Figure 1 , Figure 2The present invention relates to a dual-station automatic can-sealing mechanism, comprising a frame, a feeding conveyor belt 1, a discharging conveyor belt 2, a vacuum nitrogen-filling can-sealing mechanism 3, a can-lifting mechanism 5, a can-transferring robot 6, and a can-delivering mechanism 4. The feeding conveyor belt 1 and the discharging conveyor belt 2 are mounted on the frame. Two can-lifting mechanisms 5 are provided between the feeding conveyor belt 1 and the discharging conveyor belt 2. A vacuum nitrogen-filling can-sealing mechanism 3 is provided directly above each can-lifting mechanism 5. A can-delivering mechanism 4 is provided on one side of each vacuum nitrogen-filling can-sealing mechanism 3. A can-transferring robot 6 is mounted on the frame.

[0020] The can-transferring robot 6 is a horizontally moving robot. The movement direction of the can-transferring robot 6 is parallel to the conveying direction of the feeding conveyor belt 1. The movement path of the can-transferring robot 6 passes through the discharge end of the feeding conveyor belt 1 and the feed end of the discharge conveyor belt 2.

[0021] The conveying direction of the discharge conveyor belt 2 is parallel to the conveying direction of the feed conveyor belt 1.

[0022] It also includes a control device, which controls the feeding conveyor belt 1, the discharging conveyor belt 2, the vacuuming and nitrogen filling sealing mechanism 3, the lifting mechanism 5, the can-moving robot 6, and the lid-feeding mechanism 4.

[0023] Example 2: To ensure that the tanks can be sealed one by one, two parallel long strip baffles are provided above the feeding conveyor belt 1. The length direction of the baffles is parallel to the conveying direction of the feeding conveyor belt 1. Two parallel pneumatic telescopic rods 11 are provided on one side of the feeding conveyor belt 1. The distance between the two pneumatic telescopic rods 11 is 1.05-1.2 times the diameter of the tank. The distance between the downstream pneumatic telescopic rod 11 and the end of the feeding conveyor belt 1 is greater than the outer diameter of the tank. A sensing device 12 is provided on the side of the feeding conveyor belt 1, and the sensing device 12 is located downstream of the pneumatic telescopic rod 11.

[0024] Example 3: The vacuuming, nitrogen filling, and sealing mechanism 3 consists of a fixed box 31, a nitrogen filling pipeline 30, and a sealing assembly. The fixed box 31 is located above the lifting mechanism 5. A can-penetrating hole is provided below the fixed box 31. The nitrogen filling pipeline 30 is installed on the fixed box 31. The sealing assembly is installed on the fixed box 31. The sealing assembly includes a power mechanism 32 located at the top of the fixed box 31 and a rolled edge sealing assembly 33 located inside the fixed box 31. The power mechanism 32 drives the rolled edge sealing assembly 33 to move.

[0025] Example 4: The lid feeding mechanism 4 includes a lid placing frame 41, a vacuum suction cup robot 42, a lid placing plate 43, and a push-pull cylinder 44. The lid placing frame 41 is provided with a vacuum suction cup robot 42 and a lid placing plate 43. The lid placing plate 43 is provided with a placement hole for placing lids. The vacuum suction cup robot 42 is used to transfer the lids in the lid placing frame 41 into the placement hole. The lid placing plate 43 is connected to a push-pull cylinder 44. The push-pull cylinder 44 drives the lid placing plate 43 to move horizontally. The movement trajectory of the placement hole passes directly below the can penetration hole.

[0026] To ensure that the cover plate 43 does not shake during movement, guide rods 45 are provided on both sides of the cover plate 43, and sliding sleeves 46 that cooperate with the guide rods 45 are provided on the cover plate 43. The sliding sleeves 46 are fitted onto the guide rods 45.

[0027] Example 5: The lifting mechanism 5 consists of a first cylinder 51, a second cylinder 52, a connecting rod 53, a lifting plate 54, and an air extraction cylinder 55. The piston rod of the first cylinder 51 is connected to the cylinder body of the second cylinder 52. A vertically arranged connecting rod 53 is connected to the cylinder body of the second cylinder 52. A can-placement plate is fixed to the top of the connecting rod 53. The piston rod of the second cylinder 52 is connected to an air extraction cylinder 55. The upper end of the air extraction cylinder 55 is open. An air extraction pipe is connected to the air extraction cylinder 55. The bottom wall of the air extraction cylinder 55 is slidably mounted on the connecting rod 53. The connecting rod 53 penetrates the bottom wall of the air extraction cylinder 55. A sealing component is provided between the bottom wall of the air extraction cylinder 55 and the connecting rod 53. When the air extraction cylinder 55 is in contact with the bottom end of the fixing box 31, the air extraction cylinder 55 surrounds the can-penetrating hole. The bottom end of the fixing box 31 is provided with a sealing ring that is in contact with the top end of the air extraction cylinder 55.

[0028] The working process of this invention: In the operation of the dual-station automatic can-filling and sealing mechanism of this invention, the pneumatic telescopic rod 11 is initially in an extended state. The can containing the material is continuously conveyed to the feeding conveyor belt 1 through the device of the previous process. As the can moves on the feeding conveyor belt 1, the can is blocked by the upstream pneumatic telescopic rod 11. The upstream pneumatic telescopic rod 11 retracts, and the can is blocked by the downstream pneumatic telescopic rod 11. Then, the upstream pneumatic telescopic rod 11 extends, blocking the second to last can downstream. The downstream pneumatic telescopic rod 11 retracts, and the downstream can continues to move. After moving for a period of time, the feeding conveyor belt 1 stops running, and the can-transferring robot 6 moves the can to the lifting plate 54 of the can-lifting mechanism 5 near the discharge conveyor belt 2. Then, following the above steps, the can-transferring robot 6 moves the next can to the lifting plate 54 of the can-lifting mechanism 5 near the feeding conveyor belt 1.

[0029] While the tank is being transferred, the device completes the lid delivery operation as follows: the vacuum suction cup robot 42 is used to transfer the lid in the lid placement frame 41 to the placement hole of the lid placement plate 43, and the push-pull cylinder 44 drives the lid placement plate 43 to move until the lid moves directly below the can penetration hole of the fixing box 31.

[0030] The first cylinder 51 drives the second cylinder 52, connecting rod 53, lifting plate 54, and tank body to rise. During the above process, the tank body will push against the lid and drive the lid to rise together until the lid is close to the edge sealing assembly 33. The second cylinder 52 drives the vacuum pump 55 to move upward until the vacuum pump 55 touches the bottom of the fixed box 31. At this time, the vacuum pump 55 and the fixed box 31 together form a sealed cavity. The vacuum pipe on the vacuum pump 55 evacuates the sealed cavity. After the vacuum is completed, the nitrogen filling pipe 30 on the fixed box 31 fills the sealed cavity with nitrogen. After the nitrogen filling is completed, the first cylinder 51 drives the tank body to rise a short distance. Then the sealing assembly performs edge sealing on the tank body and the lid to complete the sealing. After the sealing is completed, the first cylinder 51 and the second cylinder 52 reset. The tank transfer robot 6 moves the two sealed tanks one by one to the discharge conveyor belt 2. During the tank transfer process, the lid plate 43 resets.

[0031] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. A dual-station automatic can-sealing mechanism, characterized in that: The machine includes a frame, a feeding conveyor belt (1), a discharging conveyor belt (2), a vacuuming and nitrogen-filling sealing mechanism (3), a lifting mechanism (5), a can-moving robot (6), and a cap-feeding mechanism (4). The feeding conveyor belt (1) and the discharging conveyor belt (2) are installed on the frame. Two lifting mechanisms (5) are provided between the feeding conveyor belt (1) and the discharging conveyor belt (2). A vacuuming and nitrogen-filling sealing mechanism (3) is provided directly above each lifting mechanism (5). A cap-feeding mechanism (4) is provided on one side of each vacuuming and nitrogen-filling sealing mechanism (3). A can-moving robot (6) is installed on the frame.

2. The dual-station automatic can-sealing mechanism as described in claim 1, characterized in that: Two parallel long strip baffles are provided above the feeding conveyor belt (1). The length direction of the baffles is parallel to the conveying direction of the feeding conveyor belt (1). Two parallel pneumatic telescopic rods (11) are provided on one side of the feeding conveyor belt (1). The distance between the two pneumatic telescopic rods (11) is 1.05-1.2 times the diameter of the tank. The distance between the downstream pneumatic telescopic rod (11) and the end of the feeding conveyor belt (1) is greater than the outer diameter of the tank. A sensing device (12) is provided on the side of the feeding conveyor belt (1). The sensing device (12) is located downstream of the pneumatic telescopic rod (11).

3. The dual-station automatic can-sealing mechanism as described in claim 1, characterized in that: The vacuuming nitrogen filling and sealing mechanism (3) consists of a fixed box (31), a nitrogen filling pipeline (30), and a sealing assembly. The fixed box (31) is located above the lifting mechanism (5). A can-penetrating hole is provided below the fixed box (31). The nitrogen filling pipeline (30) is installed on the fixed box (31). The sealing assembly is installed on the fixed box (31). The sealing assembly includes a power mechanism (32) located at the top of the fixed box (31) and a rolled edge sealing assembly (33) located inside the fixed box (31). The power mechanism (32) drives the rolled edge sealing assembly (33) to move.

4. The dual-station automatic can-sealing mechanism as described in claim 3, characterized in that: The lid feeding mechanism (4) includes a lid placing frame (41), a vacuum suction cup manipulator (42), a lid placing plate (43), and a push-pull cylinder (44). A vacuum suction cup manipulator (42) and a lid placing plate (43) are provided below the lid placing frame (41). The lid placing plate (43) is provided with a placement hole for placing the lid. The vacuum suction cup manipulator (42) is used to transfer the lid in the lid placing frame (41) into the placement hole. The lid placing plate (43) is connected to a push-pull cylinder (44). The push-pull cylinder (44) drives the lid placing plate (43) to move horizontally. The movement trajectory of the placement hole passes directly below the can penetration hole.

5. The dual-station automatic can-sealing mechanism as described in claim 4, characterized in that: Guide rods (45) are provided on both sides of the cover plate (43), and a sliding sleeve (46) is provided on the cover plate (43) to cooperate with the guide rods (45). The sliding sleeve (46) is sleeved on the guide rods (45).

6. The dual-station automatic can-sealing mechanism as described in claim 3, characterized in that: The lifting mechanism (5) consists of a first cylinder (51), a second cylinder (52), a connecting rod (53), a lifting plate (54), and an air extraction cylinder (55). The piston rod of the first cylinder (51) is connected to the cylinder body of the second cylinder (52). The cylinder body of the second cylinder (52) is connected to a vertically arranged connecting rod (53). A can-placement plate is fixed on the top of the connecting rod (53). The piston rod of the second cylinder (52) is connected to an air extraction cylinder (55). The upper end of the air extraction cylinder (55) is open. An air extraction pipe is connected to the air extraction cylinder (55). The bottom wall of the air extraction cylinder (55) is slidably installed on the connecting rod (53). The connecting rod (53) penetrates the bottom wall of the air extraction cylinder (55). A sealing component is provided between the bottom wall of the air extraction cylinder (55) and the connecting rod (53). When the air extraction cylinder (55) is in contact with the bottom end of the fixed box (31), the air extraction cylinder (55) surrounds the can-penetrating hole.

7. The dual-station automatic can-sealing mechanism as described in claim 1, characterized in that: The can-transferring robot (6) is a horizontally moving robot. The moving direction of the can-transferring robot (6) is parallel to the conveying direction of the feeding conveyor belt (1). The moving path of the can-transferring robot (6) passes through the discharge end of the feeding conveyor belt (1) and the feed end of the discharge conveyor belt (2).

8. The dual-station automatic can-sealing mechanism as described in claim 1, characterized in that: The conveying direction of the discharge conveyor belt (2) is parallel to the conveying direction of the feed conveyor belt (1).

9. The dual-station automatic can-sealing mechanism as described in claim 1, characterized in that: It also includes a control device, and the feeding conveyor belt (1), the discharging conveyor belt (2), the vacuuming and nitrogen filling sealing mechanism (3), the lifting mechanism (5), the can-moving robot (6) and the cap-feeding mechanism (4) are all controlled by the control device.

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