Transparent film thermal packaging mechanism

Abstract

The present invention relates to the field of tobacco packaging equipment, specifically a transparent film heat packaging mechanism, including a carrier turntable, a finger-shaped crimping device, a plate-shaped crimping device, a point-shaped heat sealer, a crimping power mechanism and a heat sealing power mechanism; the crimping power mechanism includes a power module for driving the finger-shaped crimping device and the plate-shaped crimping device to perform a crimping action; the point-shaped heat sealer is arranged on the upper side of the box to be packaged; the heat sealing power mechanism includes a lifting module for driving the point-shaped heat sealer to press down and heat seal. When the transparent film is crimped and heat-sealed, as the finger-shaped crimping device advances, the inner lap joint and the film it contacts are gradually pushed down from one end to the other end, and the plate-shaped crimping device slowly approaches from the outside of the package and gradually pushes down the outer lap joint, so that the pushed-down part can just fall on the inner lap joint pushed down by the finger-shaped crimping device in front, thereby reducing the problem of the lap joint and the film rebounding after being crimped.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco equipment, in particular to a transparent film heat packaging mechanism. Background Art

[0002] Transparent film is widely used for outer packaging in the packaging industries of cigarettes, cosmetics, and food. For packaging rectangular items, the folding device on the packaging equipment uses a "shovel" principle to bend the lap joint. The folding device is shaped like a reciprocating "shovel," first "shoveling" the lap joint and then quickly withdrawing it. The width of the folding device is comparable to the width of the lap joint. Due to the long overhang of the lap joint, the film appears relatively flexible, and the folding device can continue to maintain the "downward" state after withdrawing. Afterwards, the "downward" lap joint can be quickly heat-sealed with a soldering iron. Depending on the lap joint condition and the packaging process requirements, multiple heat seals can be performed. With the diversification of cigarette designs, including those for thick, medium, and slim cigarettes, the specifications and types of cigarette boxes are also becoming increasingly diverse. Currently, all cigarette boxes are required to be wrapped with transparent film. In the design specifications of slim cigarette boxes, due to the large differences in length, width, and height of the rectangular box, the narrowest overlap joint may be less than 8mm, resulting in a relatively short and narrow overlap joint overhang. At this time, the film no longer appears "flexible", and the "bending and rebounding" phenomenon after the folder is retracted is very obvious. At the same time, when the folder is retracted, the film is easily attached and pulled out, making it difficult to ensure the stability and quality of the heat seal. The research and development of transparent film packaging for long and narrow overlap strip boxes has become a research focus for industry personnel. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0004] A transparent film heat sealing mechanism, comprising: a carrier turntable, a finger-shaped crimping device, a plate-shaped crimping device, a point-shaped heat sealer, a crimping power mechanism, and a heat sealing power mechanism;

[0005] The carrier turntable is provided with a plurality of carrier platforms with bearing cavities at intervals along its circumferential direction;

[0006] The carrier turntable is provided with a loading station, a crimping and heat sealing station and a discharging station along its circumferential direction;

[0007] The finger-shaped crimping device and the plate-shaped crimping device are respectively arranged at the crimping and heat-sealing stations, and are respectively arranged on the left and right sides of the carrier platform to crimp the boxes to be packaged placed on the carrier platform;

[0008] The folding power mechanism includes: a power module for driving a finger-shaped folding device and a plate-shaped folding device to perform folding action; the power module is used to drive the finger-shaped folding device to fold from one end of the inner lap joint of the box to be packaged to the other end, and to drive the plate-shaped folding device to fold from one end of the outer lap joint of the box to be packaged to the other end;

[0009] The point-type heat sealer is arranged at the compression and heat sealing station, and is located above the carrier platform; the heat sealing power mechanism includes: a lifting module for driving the point-type heat sealer to perform downward pressure heat sealing.

[0010] Furthermore, the power module is a connecting rod power assembly, comprising: a first connecting rod mechanism and a second connecting rod mechanism;

[0011] The output rods in the first link mechanism and the second link mechanism are respectively connected to the finger-shaped press folder and the plate-shaped press folder; the first link mechanism drives the finger-shaped press folder to move and press along a first curved trajectory path, so that the finger-shaped press folder presses the transparent sealing film on the inner lap joint side from one end of the inner lap joint side of the box to be packaged to the other end; the second link mechanism drives the plate-shaped press folder to move and press along a second curved trajectory path, so that the plate-shaped press folder presses the transparent sealing film on the outer lap joint side from one end of the outer lap joint side of the box to be packaged to the other end.

[0012] Furthermore, the first and second link mechanisms share a common power source, preferably a servo motor, to facilitate the linkage of the first and second link mechanisms, with the finger-shaped crimping device crimping the transparent film on the inner lap joint side, and the plate-shaped crimping device subsequently crimping the transparent film on the outer lap joint side.

[0013] Furthermore, a carrier table is placed on which a box to be packaged is placed, the top heat-sealed end of the box to be packaged is higher than the carrier table, and the bottoms of the finger-shaped crimping device and the plate-shaped crimping device are flush with the top heat-sealed end of the box to be packaged.

[0014] Furthermore, the point-type heat sealer includes: a mounting plate, a plurality of point-type soldering irons arranged at intervals at the bottom of the mounting plate; the plurality of point-type soldering irons are arranged in a row; a lifting module is connected to the mounting plate to drive the mounting plate to move up and down, thereby driving the electric soldering irons on the mounting plate to perform heat sealing operations.

[0015] Furthermore, the finger-shaped presser and the plate-shaped presser are both plate members; the plate-shaped presser is provided with heat-pressing through holes for facilitating heat sealing with a point-shaped heat sealer.

[0016] Furthermore, the finger-shaped crimping tool is a finger-shaped plate, and the crimping finger ends of the finger-shaped crimping tool are designed to be flat and smooth.

[0017] Furthermore, the transparent film thermal packaging mechanism of the present application includes a loading piece arranged at a loading station, and the loading piece is used to load the box to be packaged and the transparent film to the carrier table of the station.

[0018] Furthermore, the transparent film heat sealing mechanism of the present application includes a discharge piece arranged at the discharge station, and the discharge piece is used to discharge the packaging box after heat sealing on the carrier table.

[0019] Furthermore, the carrier turntable includes a rotating power component and a carrier disc connected to the rotating power component, and the rotating power component is used to drive the carrier disc to rotate; the carrier platform is arranged on the carrier platform.

[0020] Beneficial effects

[0021] The present invention provides a transparent film heat sealing mechanism, comprising: a carrier turntable, a finger-shaped press crimping device, a plate-shaped press crimping device, a point-shaped heat sealer, a press crimping power mechanism and a heat sealing power mechanism; when the transparent film is pressed and heat-sealed, the finger-shaped press crimping device slowly moves from one end of the heat-sealed film fold of the package (box to be packaged) to the other side, and as the finger-shaped press crimping device moves horizontally, the inner lap joint and the film it contacts are gradually pushed down from one end to the other end, and the plate-shaped press crimping device presses horizontally from one end of the outer lap joint of the package to the other end, gradually pushing down the outer lap joint and the film, and the pushed-down part can just fall on the inner lap joint pushed down by the finger-shaped press crimping device in front; so that the finger-shaped press crimping device, During the process of gradually pushing down the lap joint, the plate-shaped press crimper always maintains a "following" state, which is beneficial to reducing the rebound of the lap joint and the film after folding; when the finger-shaped press crimper moves to the folded edge of the heat-sealed film that is separated from the package, the plate-shaped press crimper enters the position with the largest area overlapping with the heat-sealed lap interface of the package, the outer lap joint is completely inverted on the inner lap joint, and the heat-sealing hole of the plate-shaped press crimper is just aligned with the lap surface. The two press crimpers pause, and under the restriction of the plate-shaped press crimper, the two lap joints and the film remain in a stable state; the lifting module drives the point-shaped heat sealer to press down, and the point-shaped soldering iron extends into the heat-sealing hole, contacts the overlapping lap joints, and completes the heat sealing of the lap joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] Figure 1 The process roadmap for the existing transparent film packaging of cigarette boxes;

[0024] Figure 2 A schematic diagram of a shovel-folding packaging system using an existing folder heat-sealing device;

[0025] Figure 3 This is a schematic structural diagram of a transparent film thermal packaging mechanism according to this embodiment;

[0026] Figure 4 This is a combined diagram of a dislocation state of a transparent film heat packaging mechanism of this embodiment;

[0027] Figure 5This is a simplified structural diagram of a transparent film thermal packaging mechanism according to this embodiment;

[0028] Figure 6 yes Figure 5 A simplified schematic diagram of the layout of the middle finger-shaped press, the plate-shaped press, and the box to be packaged;

[0029] Figure 7 yes Figure 6 Schematic diagram of the movement trajectory control of the middle finger-shaped pressing device and the plate-shaped pressing device;

[0030] Figure 8 yes Figure 7 The moving trajectory diagram of the middle finger-shaped presser and the plate-shaped presser;

[0031] Figure 9 yes Figure 5 A flow chart of the folding process applied to a transparent film thermal packaging mechanism;

[0032] Figure 10 This is a simplified structural diagram of the power module in the transparent film thermal packaging mechanism of this embodiment;

[0033] Figure 11 is a diagram showing the motion trajectory of the carrier plate and the plate-shaped press-folding device in the transparent film thermal packaging mechanism of this embodiment;

[0034] Among them, 10. Carrier turntable, 11. Carrier platform, 20. Finger-shaped crimping device, 30. Plate-shaped crimping device, 31. Hot pressing through hole, 40. Point-shaped heat sealer, 41. Lifting module, 50. Crimping power mechanism, 51. First connecting rod mechanism, 52. Second connecting rod mechanism, 53. Power source component, 60. Heat sealing power mechanism, 70. Box to be packaged, 80. Packaging film, 91. Inner lap joint, 92. Outer lap joint, 93. First curved trajectory, 94. Second curved trajectory. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0036] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0037] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0039] This embodiment is written in a progressive manner.

[0040] Reference Figure 3-Figure 11 As shown, a transparent film heat sealing mechanism includes: a carrier turntable 10, a finger-shaped crimping device 20, a plate-shaped crimping device 30, a point-shaped heat sealer 40, a crimping power mechanism 50 and a heat sealing power mechanism 60;

[0041] The carrier turntable is provided with a plurality of carrier platforms 11 with bearing cavities at intervals along its circumferential direction;

[0042] The carrier turntable is provided with a loading station, a crimping and heat sealing station and a discharging station along its circumferential direction;

[0043] The finger-shaped crimping device and the plate-shaped crimping device are respectively arranged at the crimping and heat-sealing stations, and are respectively arranged on the left and right sides of the carrier platform to crimp the boxes to be packaged placed on the carrier platform;

[0044] The folding power mechanism includes: a power module for driving a finger-shaped folding device and a plate-shaped folding device to perform folding action; the power module is used to drive the finger-shaped folding device to fold from one end of the inner lap joint of the box to be packaged to the other end, and to drive the plate-shaped folding device to fold from one end of the outer lap joint of the box to be packaged to the other end;

[0045] The point-type heat sealer is arranged at the compression and heat sealing station, above the carrier platform; the heat sealing power mechanism includes: a lifting module 41 for driving the point-type heat sealer to perform downward pressure heat sealing.

[0046] In the above scheme, when the transparent film is folded and heat-sealed, the finger-shaped folding tool slowly moves from one end of the heat-sealed film fold of the package (box to be packaged) to the other side. As the finger-shaped folding tool moves horizontally, the inner lap joint 91 and the film it contacts are gradually pushed down from one end to the other end. The plate-shaped folding tool presses horizontally from one end of the outer lap joint 92 of the package to the other end, gradually pushing down the outer lap joint and the film. The pushed-down part just falls on the inner lap joint pushed down by the finger-shaped folding tool in front. This makes the finger-shaped folding tool and the plate-shaped folding tool always maintain a "following" state during the movement of gradually pushing down the lap joint, which is conducive to reducing the rebound of the lap joint and the film after folding. When the finger-shaped folding tool moves to the folded edge of the heat-sealed film that is separated from the package, the plate-shaped folding tool enters the position where the area overlapping with the heat-sealed lap interface of the package is the largest. The outer joint is completely collapsed on the inner joint The heat sealing hole of the plate-shaped press crimper is just aligned with the overlapping surface, and the two press crimpers pause. Under the restriction of the plate-shaped press crimper, the two overlapping joints and the film remain in a stable state; the lifting module drives the point-shaped heat sealer to press down, and the point-shaped soldering iron extends into the heat sealing hole, contacts the overlapping overlapping joints, and completes the heat sealing of the overlapping joints.

[0047] It should be noted that the rotation of the carrier turntable can make the carrier platform on the carrier turntable pass through the loading station, the crimping and heat sealing station and the unloading station in sequence; as a preferred example, Figure 1 The numbers 1, 2, 3, and 4 in the carrier turntable are the loading station, the crimping and heat sealing station, the secondary heat sealing station, and the unloading station, respectively. The lifting module is preferably an electric push rod, and an existing telescopic moving module such as an oil cylinder or an air cylinder can also be used.

[0048] As a preferred embodiment, the power module is a connecting rod power assembly, including: a first connecting rod mechanism 51 and a second connecting rod mechanism 52; the output rods in the first connecting rod mechanism and the second connecting rod mechanism are respectively connected to the finger-shaped presser and the plate-shaped presser; the first connecting rod mechanism 51 drives the finger-shaped presser to move and press along the first curved track 93, so that the finger-shaped presser 20 presses the transparent sealing film on the inner lap joint side from one end of the inner lap joint side of the box to be packaged to the other end; a section in the closed curved track is the pressing and pressing operation section, that is, the output rod drives the finger-shaped presser to move along the pressing and pressing operation section, and the finger-shaped presser moves from one end of the folded edge of the inner lap joint to press and extend to the other end. The second connecting rod mechanism 52 drives the plate-shaped presser to move and press along the second curved track 94, so that the plate-shaped presser presses the transparent sealing film on the outer lap joint side from one end of the outer lap joint of the box to be packaged to the other end. A section of the closed curve track is the folding operation section, that is, the output rod drives the plate-shaped folding device to move along the folding operation section, and the plate-shaped folding device rotates and follows the flat pressing to push down the outer joint, so that the plate-shaped folding device flat presses and covers the outer joint; effectively solving the folding and falling problem. The specific connection method of the first link mechanism and the second link mechanism can be found in Figure 10 .

[0049] Then the lifting module drives the point-shaped heat sealer to press down, and the point-shaped soldering iron extends into the heat sealing hole, contacts the overlapping lap joints, and completes the heat sealing of the lap joints; after heat sealing, the point-shaped heat sealer retreats and resets along with the lifting module, and the finger-shaped crimping device and the plate-shaped crimping device continue to be driven and moved by the first connecting rod assembly and the second connecting rod assembly to continue to run to the crimping operation section to perform crimping and heat sealing of the next package.

[0050] Furthermore, the first and second linkages 51 and 52 share a common power source 53, facilitating their coordinated operation. The finger-shaped crimping mechanism folds the inner lap joint transparent film (packaging film) 80, followed by the plate-shaped crimping mechanism folding the outer lap joint transparent film. The power source is preferably a servo motor. A carrier platform is placed on which the box to be packaged is placed, with the top heat-sealed end of the box to be packaged protruding from the platform. The bottoms of the finger-shaped crimping mechanism and the plate-shaped crimping mechanism are aligned with the top heat-sealed end of the box to be packaged. The power source is preferably a servo motor.

[0051] As an optional embodiment, the power module can also adopt an existing cam mechanism, which drives the finger-shaped crimping device and the plate-shaped crimping device to realize the crimping operation section movement in the first curved trajectory path movement and the second curved trajectory path movement.

[0052] Furthermore, the point-type heat sealer includes: a mounting plate, a plurality of point-type soldering irons arranged at intervals at the bottom of the mounting plate; the plurality of point-type soldering irons are arranged in a row; a lifting module is connected to the mounting plate to drive the mounting plate to move up and down, thereby driving the electric soldering irons on the mounting plate to perform heat sealing operations.

[0053] As a preferred embodiment, the finger-shaped crimping tool and the plate-shaped crimping tool are both plate members; the plate-shaped crimping tool is provided with heat-pressing holes for facilitating heat sealing with a point-type heat sealer. The finger-shaped crimping tool is a finger-shaped plate member, and the crimping finger tips of the finger-shaped crimping tool are flat and smooth.

[0054] Furthermore, the transparent film thermal packaging mechanism of the present application includes a loading member disposed at a loading station for loading the packaging box and the transparent film onto a carrier platform at the loading station. The transparent film thermal packaging mechanism of the present application also includes a discharge member disposed at a discharge station for discharging the packaging box after heat sealing on the carrier platform. The loading and discharge members are preferably existing robotic devices.

[0055] The carrier turntable includes a rotating power part and a carrier disc connected to the rotating power part, wherein the rotating power part is used to drive the carrier disc to rotate; and a carrier platform is arranged on the carrier platform. The rotating power part is preferably a servo motor, which is used to drive the carrier disc to rotate intermittently, so that each carrier platform on the carrier disc can pass through the loading station, the crimping and heat sealing station and the discharge station in sequence. The loading part of the packaging box to be loaded from the loading station is loaded onto the carrier platform, and the servo motor drives the carrier disc to rotate to the crimping and heat sealing station for crimping and heat sealing. After crimping is completed, the servo motor continues to drive the carrier disc to rotate to the discharge station, and the discharge part outputs the heat-sealed packaging box.

[0056] In this embodiment, there are two point-type heat sealers, and four carriers are symmetrically arranged on the carrier plate; a secondary heat sealing station is also provided between the pressing and folding heat sealing station and the discharge station for performing the re-pressing heat sealing operation, see Figure 3 、 Figure 4 and Figure 10 ; Among them, in order to clearly show the heat sealing mechanism of this application, Figure 4 and Figure 10 The folding device, heat sealer, and carrier turntable are offset. It's understood that the carrier turntable rotates intermittently, with each 90-degree rotation of the carrier turning the plate-shaped folding device rotated one full circle. The four stations sequentially complete feeding, folding point heat sealing, secondary heat pressing and heat sealing, and discharge. The folding device trajectory control in this application can also be simplified to a circular trajectory.

Claims

1. A transparent film thermal packaging mechanism, characterized in that: include: Carrier turntable, finger-shaped crimping device, plate-shaped crimping device, point-shaped heat sealer, crimping power mechanism and heat sealing power mechanism; The carrier turntable is provided with a plurality of carrier platforms with bearing cavities at intervals along its circumferential direction; The carrier turntable is provided with a loading station, a crimping and heat sealing station and a discharging station along its circumferential direction; The finger-shaped crimping device and the plate-shaped crimping device are respectively arranged at the crimping and heat-sealing stations, and are respectively arranged on the left and right sides of the carrier platform to crimp the boxes to be packaged placed on the carrier platform; The folding power mechanism includes: a power module for driving a finger-shaped folding device and a plate-shaped folding device to perform folding action; the power module is used to drive the finger-shaped folding device to fold from one end of the inner overlap of the box to be packaged to the other end, and to drive the plate-shaped folding device to fold from one end of the outer overlap of the box to be packaged to the other end; The point-type heat sealer is arranged at the compression heat sealing station, above the carrier platform; the heat sealing power mechanism includes: a lifting module for driving the point-type heat sealer to press down and heat seal; The plate-shaped press crimping device is provided with a heat-pressing through-hole for facilitating heat sealing by the point-shaped heat sealer; the finger-shaped press crimping device starts to press crimp from one end of the inner lap joint of the box to be packaged, and the plate-shaped press crimping device starts to press crimp from one end of the outer lap joint, and the two always maintain a "following" state until the outer lap joint is completely collapsed on the inner lap joint. Under the restriction of the plate-shaped press crimping device, the collapse of the two lap joints and the film remains stable. Under the restriction of the plate-shaped press crimping device, the lifting module drives the point-shaped heat sealer to press down, and completes the heat sealing through the heat-pressing through-hole on the plate-shaped press crimping device.

2. A transparent film thermal packaging mechanism according to claim 1, characterized in that: The power module is a connecting rod power assembly, including: a first connecting rod mechanism and a second connecting rod mechanism; The output rods in the first link mechanism and the second link mechanism are respectively connected to the finger-shaped press folder and the plate-shaped press folder; the first link mechanism drives the finger-shaped press folder to move and press along a first curved trajectory path, so that the finger-shaped press folder presses the transparent sealing film on the inner lap joint side from one end of the inner lap joint side of the box to be packaged to the other end; the second link mechanism drives the plate-shaped press folder to move and press along a second curved trajectory path, so that the plate-shaped press folder presses the transparent sealing film on the outer lap joint side from one end of the outer lap joint side of the box to be packaged to the other end.

3. The transparent film thermal packaging mechanism according to claim 2, characterized in that: The first link mechanism and the second link mechanism share the same power source; it is beneficial for the first link mechanism and the second link mechanism to work in linkage, the finger-shaped crimping device crimps the transparent film on the inner lap joint side, and the plate-shaped crimping device follows closely to crimp the transparent film on the outer lap joint side.

4. The transparent film thermal packaging mechanism according to claim 1, characterized in that: The carrier platform is provided with a box to be packaged, the top heat-sealed end of the box to be packaged is higher than the carrier platform, and the bottoms of the finger-shaped presser and the plate-shaped presser are flush with the top heat-sealed end of the box to be packaged.

5. The transparent film thermal packaging mechanism according to claim 1, characterized in that: The point-type heat sealer includes: a mounting plate, a plurality of point-type soldering irons arranged at intervals at the bottom of the mounting plate; the plurality of point-type soldering irons are arranged in a row; a lifting module is connected to the mounting plate to drive the mounting plate to move up and down, thereby driving the electric soldering irons on the mounting plate to perform heat sealing operations.

6. The transparent film thermal packaging mechanism according to claim 1, characterized in that: The finger-shaped pressing tool is a finger-shaped plate, and the pressing finger ends of the finger-shaped pressing tool are flat and smooth in design.

7. The transparent film thermal packaging mechanism according to claim 1, characterized in that: The utility model comprises a loading piece arranged at a loading station, and the loading piece is used for loading boxes to be packaged and transparent films onto a carrier platform of the station.

8. The transparent film thermal packaging mechanism according to claim 1, characterized in that: The discharging part comprises a discharging piece arranged at the discharging station, and is used for discharging the packaging box after heat sealing on the carrier table.

9. The transparent film thermal packaging mechanism according to claim 1, characterized in that: The carrier turntable includes a rotating power component and a carrier plate connected to the rotating power component, wherein the rotating power component is used to drive the carrier plate to rotate; the carrier platform is arranged on the carrier platform.

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