Magnetic levitation super-high-speed circulation heat-seal cutting device

Abstract

The application discloses a magnetic suspension super-high-speed circulating heat-seal cutting device, which is characterized in that: a upper magnetic suspension annular stator module and a lower magnetic suspension annular stator module are respectively arranged at the upper part and the lower part of a portal of the device; an upper sealing cutter assembly and a lower sealing cutter assembly are arranged on the upper magnetic suspension annular stator module and the lower magnetic suspension annular stator module through upper and lower mover sliding blocks; an upper cover plate is arranged at the front part of the upper magnetic suspension annular stator module, and a lower cover plate is arranged at the front part of the lower magnetic suspension annular stator module; the upper sealing cutter assembly at the lower part of the upper magnetic suspension annular stator module and the lower sealing cutter assembly at the upper part of the lower magnetic suspension annular stator module realize closed heat-seal, and the cutting is realized by a cutter in the upper sealing cutter assembly when reaching the lower end of the upper magnetic suspension annular stator module. The application has the advantages of small noise and vibration, long heat-seal time, high speed, high heat-seal and cutting precision, high work efficiency and packaging speed of 800-1000 packages per minute.

Description

Technical Field

[0001] This invention relates to packaging machinery, and more particularly to a heat-sealing and cutting device for use in a pillow bag machine. Background Technology

[0002] Currently, pillow packaging machines (also known as pillow bag machines) are automatic packaging equipment suitable for pharmaceutical blister packs, cosmetics, food, health products, or similar items. Their operation involves the following steps: feeding and pushing the blister pack or similar item; feeding and conveying the packaging film (paper); conveying the item into the packaging film; heat sealing; and cutting. The heat sealing and cutting device (i.e., the sealing and cutting device) first heat seals the packaging film containing the item and then cuts it. When the pillow bag machine operates at high speed, its heat sealing and cutting time is relatively short, which can cause the packaging to be not securely sealed, affecting packaging quality and leading to waste. This is especially problematic for packaging valuable items, causing damage and waste. Currently, sealing and cutting devices generally adopt rotary sealing and cutting and reciprocating sealing and cutting. Rotary sealing and cutting involves a short contact time between the upper and lower sealing blades as the guide shaft rotates once, resulting in a short heat sealing time. This can easily lead to poor sealing performance during high-speed operation, which greatly limits the packaging speed. Reciprocating sealing and cutting uses an eccentric disc to drive the upper and lower blade shafts to rotate. The upper and lower sealing blades close for a longer time. During the movement, the sealing blades slowly separate and then close again in a reciprocating motion. This results in a longer heat sealing time, but it has a significant disadvantage: the faster the speed, the greater the vibration and noise generated. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a magnetic levitation ultra-high speed circulating heat sealing and cutting device that features strong heat sealing, high-speed operation, and low vibration and noise.

[0004] The objective of this invention is achieved through the following technical solution: a magnetic levitation ultra-high-speed circulating heat-sealing and cutting device, comprising a gate, with an upper magnetic levitation annular stator module and a lower magnetic levitation annular stator module respectively mounted on the upper and lower parts of the gate. An upper sealing knife assembly is mounted on the upper magnetic levitation annular stator module via an upper moving slider, and a lower sealing knife assembly is mounted on the lower magnetic levitation annular stator module via a lower moving slider. An upper cover plate is mounted at the front of the upper magnetic levitation annular stator module, and a lower cover plate is mounted at the front of the lower magnetic levitation annular stator module. The upper sealing knife assembly located at the lower part of the upper magnetic levitation annular stator module and the lower sealing knife assembly located at the upper part of the lower magnetic levitation annular stator module achieve a closed heat seal, until the lower end of the upper magnetic levitation annular stator module is cut off by a cutter inside the upper sealing knife assembly.

[0005] Both the upper and lower magnetic levitation annular stator modules are annular in shape, with horizontal upper and lower parts and arc-shaped sides. A cutter is mounted within the upper sealing knife assembly via a cutting knife telescopic rod, which is connected to an annular cam track via a cam bearing. The annular cam track is mounted on the upper cover plate and has an inner groove at its lower end. Heating tubes are installed within both the upper and lower sealing knife assemblies, and these heating tubes are electrically connected to a slip ring via wires.

[0006] By employing this invention, magnetic levitation force drives the upper and lower moving sliders. Influenced by the annular movement of the upper and lower magnetically levitated annular stator modules and the annular cam track, the upper and lower moving sliders continuously perform a reciprocating closed-loop motion. During the heat sealing process, the upper and lower sealing knife assemblies undergo a period of horizontal translation. The longer this horizontal translation trajectory results in a correspondingly longer heat sealing time, thus achieving a firm heat seal and stable operation. This invention features low noise and vibration, long heat sealing time, rapid speed increase, high sealing and cutting accuracy, and high working efficiency, achieving a packaging speed of 800-1000 packages per minute. Attached Figure Description

[0007] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0008] Figure 1 This is a schematic diagram of the structure of the magnetic levitation ultra-high speed circulating heat sealing and cutting device of the present invention.

[0009] Figure 2 for Figure 1 Perspective view (excluding the front and rear conveyor platforms and upper and lower covers). Detailed Implementation

[0010] Reference Figure 1 , Figure 2As can be seen, the magnetic levitation ultra-high speed circulating heat sealing and cutting device of the present invention includes a gate 19. An upper magnetic levitation annular stator module 1 and a lower magnetic levitation annular stator module 2 are respectively installed on the upper and lower parts of the gate 19. An upper sealing knife assembly 7 (several units) is installed on the upper magnetic levitation annular stator module 1 through an upper moving slider 3. A lower sealing knife assembly 8 (several units) is installed on the lower magnetic levitation annular stator module 2 through a lower moving slider 4. An upper cover plate 5 is installed at the front of the upper magnetic levitation annular stator module 1 and a lower cover plate 6 is installed at the front of the lower magnetic levitation annular stator module 2. The upper sealing knife assembly located at the lower part of the upper magnetic levitation annular stator module and the lower sealing knife assembly located at the upper part of the lower magnetic levitation annular stator module achieve closed heat sealing until the lower end of the upper magnetic levitation annular stator module 1 (i.e., the end of its annular horizontal position, the starting end that is about to rise) is cut off by the cutter in the upper sealing knife assembly 7. The upper magnetic levitation ring stator module 1 and the lower magnetic levitation ring stator module 2 are both ring-shaped with horizontal upper and lower parts and arc-shaped sides. They are each electrically connected to the module drive motor.

[0011] like Figure 2 As shown, a cutter 12 is mounted inside the upper sealing knife assembly 7 via a cutter telescopic rod 10. The other end of the cutter telescopic rod 10 is connected to an annular cam track 14 via a cam bearing 11. The annular cam track 14 is mounted on the upper cover plate 5. The lower end of the annular cam track 14 (i.e., the end of its horizontal position, the starting end before it rises) has an inner groove 15. The cutter 12 inside the upper sealing knife assembly 7 cuts the heat-sealed packaging bag at this inner groove 15. The annular shape of the annular cam track 14 must be smaller than the annular shape of the upper magnetic levitation annular stator module 1 and be located within its inner circumference. Heating tubes 9 are installed inside both the upper sealing knife assembly 7 and the lower sealing knife assembly 8. These heating tubes 9 are electrically connected to a slip ring 13 via (each connected) wires 16 (the slip ring 13 is located at the annular center of the upper and lower magnetic levitation annular stator modules, respectively). A front-end conveying platform 17 is installed at the front of the upper magnetic levitation annular stator module 1 and the lower magnetic levitation annular stator module 2, and a rear-end conveying platform 18 is installed at the rear.

[0012] The working principle of this invention is as follows: the magnets on the inner walls of the upper and lower magnetic levitation annular stator modules and the magnetic induction coils in the electrically connected module drive motor generate a magnetic levitation force, driving the upper and lower moving sliders to move. Due to the annular limit effect of the annular shape of the upper and lower magnetic levitation annular stator modules and the annular cam track 14, the upper and lower moving sliders always perform a reciprocating closed-loop motion. When the upper moving slider moves to the lower part of the upper magnetic levitation annular stator module and the lower moving slider moves to the upper part of the lower magnetic levitation annular stator module, the upper and lower sealing knife assemblies achieve closed heat sealing and perform a horizontal translational motion for a period of time. The longer the horizontal translational motion trajectory, the longer the corresponding heat sealing time will be. On this basis, the packaging speed of the pillow bag machine can be continuously improved to achieve 800-1000 bags / minute. When the upper sealing knife assembly moves to the lower part of the annular cam track and the end of the annular horizontal position (straight segment), it is affected by the inner groove of the annular cam track. The cutter extends from the sealing knife opening and cuts the packaging bag. After cutting, it loses the effect of the inner groove of the annular cam track and the cutter retracts into the sealing knife opening. The upper and lower sealing knife assemblies separate and move upward and downward respectively.

Claims

1. A magnetic levitation ultra-high-speed circulating heat sealing and cutting device, comprising an archway, characterized in that: An upper magnetic levitation annular stator module and a lower magnetic levitation annular stator module are respectively installed on the upper and lower parts of the archway. An upper sealing knife assembly is mounted on the upper magnetic levitation annular stator module via an upper moving slider, and a lower sealing knife assembly is mounted on the lower magnetic levitation annular stator module via a lower moving slider. An upper cover plate is installed at the front of the upper magnetic levitation annular stator module, and a lower cover plate is installed at the front of the lower magnetic levitation annular stator module. The upper sealing knife assembly at the lower part of the upper magnetic levitation annular stator module and the lower sealing knife assembly at the upper part of the lower magnetic levitation annular stator module achieve a closed heat seal, continuing until the lower end of the upper magnetic levitation annular stator module. The cutter inside the upper sealing knife assembly achieves cutting; both the upper and lower magnetic levitation annular stator modules are annular in shape with horizontal upper and lower parts and arc-shaped sides. The cutter is mounted inside the upper sealing knife assembly via a cutter telescopic rod, which is connected to an annular cam track via a cam bearing. The annular cam track is mounted on the upper cover plate, and has an inner groove at its lower end. The annularity of the annular cam track must be smaller than that of the upper magnetic levitation annular stator module and be located within its inner circumference. There are several corresponding upper moving sliders and upper sealing knife assemblies, and several lower moving sliders and lower sealing knife assemblies. The magnets on the inner walls of the upper and lower magnetic levitation annular stator modules, connected to the magnetic induction coils in the module drive motor, generate a magnetic levitation force, driving the upper and lower moving sliders to move. Due to the annular limit effect of the upper and lower magnetic levitation annular stator modules and the annular cam track, the upper and lower moving sliders always perform a reciprocating closed-loop motion. When the upper moving slider moves to the lower part of the upper magnetic levitation annular stator module and the lower moving slider moves to the upper part of the lower magnetic levitation annular stator module, the upper and lower sealing knife assemblies achieve closed heat sealing and perform a horizontal translational motion for a period of time. The longer the horizontal translational motion trajectory, the longer the corresponding heat sealing time will be. When the upper sealing knife assembly moves to the lower part of the annular cam track and the end of the annular horizontal position, the cutter extends from the sealing knife opening and cuts the packaging bag due to the influence of the inner groove of the annular cam track. After cutting, it loses the inner groove effect of the annular cam track and the cutter retracts into the sealing knife opening. The upper and lower sealing knife assemblies separate and move upward and downward respectively.

2. The magnetic levitation ultra-high-speed circulating heat sealing and cutting device according to claim 1, characterized in that: Heating tubes are installed in both the upper and lower sealing knife assemblies, and these heating tubes are electrically connected to the slip ring via wires.

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