A wrapping and cutting mechanism for a carton of cigarettes

Abstract

The utility model discloses a wrapped film cutting mechanism of cigarette carton, including upper pull film roller group, lower pull film roller group and cutting mechanism, and the upper pull film roller group and lower pull film roller group top most closest to the unwinding roller one roll axle is provided with the anti -film mechanism, the anti -film mechanism includes two with the roll axle both ends movable sleeve joint's lower swing rod, and two lower swing rod other end is connected together through a counterweight roller, and the cutting mechanism's lower fixed base both sides along its length direction each is equipped with a cooling air pipe, and the cooling air pipe is spaced and is provided with a plurality of the air outlet that inclines to the direction of lower fixed base on interval, the utility model discloses through increasing the anti -film mechanism on the roll axle, and the PE film is bypassed from the counterweight roller bottom in the film sending process, and under the gravity of anti -film mechanism itself makes the PE film outward unfolding, and the PE film will not be adsorbed on the PE film main part in the film sending process, be equipped with the cooling air pipe through being arranged in the lower fixed base both sides, and the blown wind can make the film end head after cutting cooling down fast to make the interface fast solidification avoid breaking off.

Description

Technical Field

[0001] This utility model relates to a wrapping and sealing mechanism for cigarette cartons, belonging to the technical field of cigarette carton sorting equipment in the tobacco industry. Background Technology

[0002] After cigarettes are produced at the cigarette factory, they are transported to the logistics sorting center for sorting. The logistics sorting center will sort and combine different cartons of cigarettes according to the customer's order information to form one or more packages, and then wrap the sorted packages with a film-sealing and cutting mechanism.

[0003] The wrapping and sealing mechanism for cigarette cartons is a relatively mature technology, but we have found some problems with the existing wrapping and sealing mechanism during use:

[0004] Firstly, during the process of connecting the PE film on the unwinding roller to the film pulling roller assembly, the PE film on the unwinding roller is relatively soft and has a certain degree of adsorption. Furthermore, the tension between the unwinding roller and the film pulling roller assembly is not very high. As a result, the PE film fed out by the unwinding roller during the film feeding process will adhere to the PE film body of the unwinding roller and rotate together with the unwinding roller, making it impossible for the PE film to unfold properly and affecting the film feeding process.

[0005] Furthermore, the unwinding roller is placed on an active roller and a passive roller that are spaced apart. As the PE film is continuously unwound, the thickness decreases and the height of the unwinding roller decreases. When the unwinding roller is completely unwound, it will directly contact the active roller and the passive roller. At this time, the staff needs to replace the anti-winding roller in time. However, the current warning mechanism cannot accurately issue alarm signals and cannot achieve high-precision control.

[0006] Finally, after the cigarette pack is wrapped in PE film and sealed by the sealing and cutting mechanism, the ends of the PE film on the upper and lower unwinding rollers will be heat-fused together. At this time, the temperature at the film joint is relatively high, and the PE film itself is held taut by other mechanisms. Under the action of tension, the newly joined ends are prone to break. Utility Model Content

[0007] The purpose of this invention is to provide a film-sealing and cutting mechanism for cigarette packs. By adding an anti-tipping mechanism and a cooling mechanism, and replacing the tactile switch with a photoelectric switch, the PE film will not adhere to the PE film body during the film feeding process; the film end after sealing and cutting will cool down quickly, allowing the interface to solidify rapidly and prevent breakage; and the photoelectric switch can improve control precision.

[0008] The technical solution of this utility model is as follows: a wrapping and sealing mechanism for cigarette packs, the wrapping and sealing mechanism including an upper film pull roller group, a lower film pull roller group and a sealing and cutting mechanism, an anti-tipping mechanism is provided on the roller shaft closest to the unwinding roller at the top of the upper film pull roller group and the lower film pull roller group, the anti-tipping mechanism includes two lower swing rods that are movably sleeved with the two ends of the roller shaft, and the other ends of the two lower swing rods are connected together by a counterweight roller; a cooling air pipe is provided on each side of the lower fixed seat of the sealing and cutting mechanism along its length direction, and multiple air outlets obliquely downward towards the fixed seat are provided on the cooling air pipes at intervals.

[0009] In the aforementioned wrapping and sealing mechanism for cigarette packs, an installation port is provided on the side plates on both the front and rear sides of the unwinding roller, and a set of through-beam switches is installed on the side plates at the installation port.

[0010] In the aforementioned wrapping and sealing mechanism for cigarette packs, the unwinding roller is placed on the active roller and the passive roller, wherein the active roller is connected to the drive motor via a chain, and the drive motor is a speed-regulating motor.

[0011] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model adds an anti-tipping film mechanism to the roller shaft. During the film feeding process, the PE film passes around the bottom of the counterweight roller, and under the gravity of the anti-tipping film mechanism itself, the PE film unfolds outward, so the PE film will not adhere to the PE film body during the film feeding process; by setting cooling air pipes on both sides of the lower fixed seat, the blown air can quickly cool down the film end after sealing and cutting, so that the interface can be quickly solidified to avoid breakage; by setting a photoelectric switch, when the unwinding roller decreases in height due to the reduction of PE film and blocks the photoelectric switch's beam, an alarm signal can be issued, thereby achieving high-precision control. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the cooling duct installation structure.

[0014] Reference numerals: 1-Upward pulling film roller group, 2-Downward pulling film roller group, 3-Unwinding roller, 4-Roller shaft, 5-Lower swing arm, 6-Counterweight roller, 7-Side plate, 8-Mounting port, 9-Through-shooting switch, 10-Lower fixed base, 11-Cooling air duct, 12-Air outlet, 13-Drive motor. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0016] An embodiment of this utility model: a wrapping and sealing mechanism for cigarette packs, the wrapping and sealing mechanism including an upper pull film roller group 1 and a lower pull film roller group 2, an anti-tipping mechanism is provided on a roller shaft 4 at the top of the upper pull film roller group 1 and the lower pull film roller group 2 closest to the unwinding roller 3, the anti-tipping mechanism includes two lower swing rods 5 that are movably sleeved with the two ends of the roller shaft 4, and the other ends of the two lower swing rods 5 are connected together by a counterweight roller 6.

[0017] During the film feeding process of the unwinding roller 3, the PE film first passes around the bottom of the counterweight roller 6, then winds around to the top of the roller shaft 4 connected to the lower swing arm 5, and then connects to the other roller shafts of the upper pull film roller group 1 and the lower pull film roller group 2. Under normal conditions, the lower swing arm 5 is in a vertical state due to the weight of itself and the counterweight roller 6. After the PE film passes around the bottom of the counterweight roller 6, the PE film unfolds outward under the weight of the anti-tipping film mechanism itself, so the PE film will not adhere to the PE film body of the unwinding roller 3 during the film feeding process.

[0018] The film wrapping and sealing mechanism also includes a sealing and cutting mechanism. A cooling air duct 11 is provided on each side of the lower fixed base 10 along its length. Multiple air outlets 12 are provided at intervals on the cooling air duct 11, which are inclined downwards towards the fixed base 10. One end of the cooling air duct 11 is connected to an external air source. After the sealing and cutting mechanism completely seals the film, the air blown out by the cooling air duct 11 can quickly cool down the film end after sealing and cutting, thereby allowing the PE film interface to solidify quickly and prevent it from breaking.

[0019] The unwinding roller 3 has a mounting port 8 on its front and rear side plates 7. A set of photoelectric switches 9 are installed on the side plates 7 at the mounting port 8. One photoelectric switch 9 is a transmitter and the other is a receiver, such as an infrared photoelectric switch. The line connecting the transmitter and receiver is aligned with the lowest point of the unwinding roller 3. As the unwinding roller 3 continues to unwind, the thickness of the PE film decreases and the unwinding roller 3 descends. When the unwinding roller 3 descends to the point where it blocks the rays emitted between the photoelectric switches 9, the photoelectric switches 9 will issue an alarm signal, prompting the operator to replace the unwinding roller 3 in time, thereby achieving precise control.

[0020] The unwinding roller 3 is placed on the active roller and the passive roller. The active roller is connected to the drive motor 13 via a chain. The drive motor 13 is a speed-regulating motor. The advantage of a speed-regulating motor is that it can achieve a gentler film feeding and avoid damage caused by excessive film tension.

Claims

1. A wrapping and sealing mechanism for cigarette packs, the wrapping and sealing mechanism comprising an upper pulling film roller group (1), a lower pulling film roller group (2), and a sealing and cutting mechanism, characterized in that: An anti-tipping mechanism is provided on a roller shaft (4) at the top of the upper pull film roller group (1) and the lower pull film roller group (2) closest to the unwinding roller (3). The anti-tipping mechanism includes two lower swing rods (5) that are movably connected to the two ends of the roller shaft (4). The other ends of the two lower swing rods (5) are connected together by a counterweight roller (6). A cooling air pipe (11) is provided on each side of the lower fixed seat (10) of the sealing and cutting mechanism along its length. Multiple air outlets (12) are provided at intervals on the cooling air pipes (11) in the direction of the downward fixed seat (10).

2. The wrapping and sealing mechanism for cigarette packs according to claim 1, characterized in that: An installation port (8) is provided on the side plates (7) on the front and rear sides of the unwinding roller (3), and a set of photoelectric switches (9) is installed on the side plate (7) at the installation port (8).

3. The wrapping and sealing mechanism for cigarette packs according to claim 1, characterized in that: The unwinding roller (3) is placed on the active roller and the passive roller, wherein the active roller is connected to the drive motor (13) via a chain, and the drive motor (13) is a speed-regulating motor.

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