Packaging film sealing and cutting device

Abstract

The utility model discloses a packaging film sealing and cutting device which comprises an upper cutter assembly and a lower cutter assembly, and the upper cutter assembly comprises an upper cutter holder, an upper heating tube arranged in the upper cutter holder and an upper pressing strip fixed below the upper cutter holder. The lower cutter assembly comprises two lower cutter holders, lower heating tubes arranged in the lower cutter holders, heating wires arranged on the lower cutter holders, a high-temperature-resistant protective film covering the heating wires, a cutter arranged between the two lower cutter holders and a third lifting assembly, the cutter is connected with the third lifting assembly, and the third lifting assembly drives the cutter to ascend and descend. And when the upper cutter assembly and the lower cutter assembly are closed up and down to weld and cut off the packaging film, the upper pressing strip is correspondingly pressed on the lower cutter holder. The heating pipe only plays a heat tracing role, the packaging film is quickly welded through high temperature generated by the heating wire in a short time in the working process, the temperature in the welding process can be more stable and uniform through the heat tracing mode, and therefore the welding quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the sealing and cutting technology of packaging film, in particular to a packaging film sealing and cutting device. BACKGROUND

[0002] When the cigarette cartons are delivered, a plurality of cigarette cartons need to be packaged together to facilitate logistics distribution, such as delivering batches of cigarette cartons from a factory to retail points such as small shops. There are several methods for wrapping film packaging of cigarette cartons in the prior art: the first packaging method is to use PE film heat shrinkage to wrap the cigarette cartons; the second packaging method is to use a winding machine to wrap the film roll on the cigarette cartons to form a stack for convenient transportation (such as patent 2017205232023 discloses a film roll packaging machine for cold packaging of cigarette cartons); the third packaging method is to use a sealing and cutting packaging device to wrap the cigarette cartons by sealing and cutting. Among them, the third packaging method related equipment such as the sealing and cutting device for packaging cigarette cartons disclosed in the Chinese patent application No. 2020107010349.

[0003] A key component involved in the third packaging method is a device for sealing and cutting the packaging film, such as the film fuse device provided in the above sealing and cutting device for packaging cigarette cartons, which realizes the sealing and cutting of the packaging film by fusing.

[0004] However, the existing device for sealing and cutting the packaging film has the following problems:

[0005] During use, the heating part of the device for sealing and cutting the packaging film is always kept at a high temperature that can melt the packaging film. During the packaging process of the device for packaging cigarette cartons, if the packaging film or the cigarette cartons touches the heating part, it is easy to cause the outer packaging of the packaging film or the cigarette cartons to be scalded. Moreover, the packaging film is also easy to adhere to the heating part. Therefore, the inventor designs a new packaging film sealing and cutting device. UTILITY MODEL CONTENTS

[0006] The utility model aims to provide a packaging film sealing and cutting device which is more stable to use.

[0007] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0008] The utility model discloses a kind of packaging film sealing cutting devices, it is characterized by including upper knife component and lower knife component, upper knife component includes upper knife seat, the upper heating tube for generating heat tracing being arranged in upper knife seat and the upper pressing strip being fixed below upper knife seat, lower knife component includes two lower knife seats being arranged side by side, the lower heating tube for generating heat tracing being arranged in lower knife seat, the heating wire for generating welding temperature being arranged in lower knife seat, the high-temperature-resistant protective film being covered in heating wire, the cutting knife being arranged between two lower knife seats and the third lifting assembly, the cutting knife is connected with the third lifting assembly, the cutting knife is driven to lift by the third lifting assembly, when upper knife component and lower knife component are closed upwards and downwards to packaging film and carry out welding and cutting, upper pressing strip is correspondingly pressed on the upper surface of lower knife seat.

[0009] The utility model discloses through upper heating tube and lower heating tube make upper knife seat and lower knife seat can always keep in set low temperature state, to reach heat tracing effect, dispense with the influence of outside temperature change to interface film effect.(If interface film temperature is 110 degrees, suppose not setting heat tracing, because heating wire is through instantaneous heating and realizes the welding of packaging film, during heating wire not heating, its itself will reach or approach outside temperature, like this will appear not heating time's length will directly influence heating wire fixed time long heating and welding effect, therefore set heat tracing, and the temperature of heat tracing is generally set between 50-60 degrees, both will not scald packaging film and will not be influenced by outside temperature).

[0010] The utility model discloses further technical scheme is: the upper surface of lower knife seat is equipped with recess, and heating wire is inlaid in recess.

[0011] The utility model discloses further technical scheme is: be equipped with tensioning assembly respectively in the both ends of lower knife seat, and the end of heating wire is connected with tensioning assembly, and tensioning assembly always keeps and tightens heating wire.

[0012] The utility model discloses further technical scheme is: tensioning assembly includes fixed seat, pull plate and spring, and one end of pull plate is rotatably connected in fixed seat, and the other end of pull plate is connected with the end of heating wire, and spring provides the force that pull plate keeps and turns outward.

[0013] The utility model discloses further technical scheme is: one end of pull plate is equipped with pull hook for being connected with the end of heating wire, and the end of heating wire is equipped with pull ring, and pull hook cooperates and hooks on pull ring.

[0014] The utility model discloses further technical scheme is: when welding, the heating wire on the lower knife seat close to the baled cigarette of lower knife seat is arranged at the edge close to the baled cigarette of lower knife seat.

[0015] The utility model discloses further technical scheme is: high-temperature-resistant protective film is iron fluorine dragon film.

[0016] The further technical scheme of the utility model discloses: two lower knife seats are equipped with cutter installation groove, and the cutter is installed in the cutter installation groove, and the third lifting assembly is installed below the cutter installation groove, and the lower end of the cutter is connected with the third lifting assembly.

[0017] The further technical scheme of the utility model discloses: the lower surface of the upper knife seat is equipped with two upper pressing strips corresponding to two lower knife seats, and the position of the cutter between the two upper pressing strips is equipped with a cutting groove.

[0018] The further technical scheme of the utility model discloses: the lower surface of the lower knife seat is equipped with a clamping groove, and the upper surface of the upper pressing strip is equipped with a clamping block, and the clamping block is clamped into the clamping groove.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1, the heating pipe of the utility model only acts as a heating function, and the upper knife assembly and the lower knife assembly are kept in a certain low temperature state, and the high temperature generated by the heating wire in a short time is used to melt the packaging film during work, and the heating mode can make the temperature during melting more stable and uniform, so that the quality of melting is guaranteed.

[0021] 2, the further heating wire is installed on the upper surface of the lower knife seat in the inlaying mode, so that the heating wire and the lower knife seat have better heat transfer, and the temperature during melting is more stable and uniform.

[0022] 3, the further setting of the tensioning assembly can always keep the heating wire tight, so that the heating wire keeps a flat state, and the heating wire can better keep flat with the packaging film during melting, and the packaging film is more fully contacted, so that the melting quality is better guaranteed. DRAWINGS

[0023] Figure 1 It is the three-dimensional schematic view of the packaging film sealing and cutting device of the utility model embodiment;

[0024] Figure 2 It is the three-dimensional schematic view of the lower knife assembly of the utility model embodiment;

[0025] Figure 3 It is the three-dimensional schematic view of the end cover of the lower knife assembly of the utility model embodiment when being opened;

[0026] Figure 4 It is the sectional view schematic view of the lower knife assembly of the utility model embodiment.

[0027] Figure 5 This is a schematic diagram of the structure of the tensioning component connection at one end of the lower blade assembly according to an embodiment of the present invention;

[0028] Figure 6 This is a front view schematic diagram of the tensioning component according to an embodiment of the present utility model;

[0029] Figure 7 This is one of the perspective schematic diagrams of the packing equipment for cigarettes in this utility model embodiment;

[0030] Figure 8 This is a second perspective view of the cigarette packing equipment according to an embodiment of this utility model;

[0031] Figure 9 This is a front view schematic diagram of the cigarette packing equipment according to an embodiment of the present utility model;

[0032] Figure 10 yes Figure 9 Schematic diagram of the cross section at point AA;

[0033] Figure 11 This is a three-dimensional schematic diagram of the packing equipment for cigarettes in this embodiment of the present invention, with the conveyor hidden behind it.

[0034] Figure 12 This is a three-dimensional schematic diagram of the guiding film mechanism according to an embodiment of the present utility model;

[0035] Figure 13 This is a three-dimensional schematic diagram of the counterweight membrane assembly according to an embodiment of the present invention;

[0036] Figure 14 This is one of the perspective schematic diagrams of the pressing and feeding mechanism according to an embodiment of this utility model;

[0037] Figure 15 This is a second perspective view of the pressing and feeding mechanism according to an embodiment of this utility model;

[0038] Figure 16 This is one of the structural schematic diagrams of the packing equipment for cigarettes in this embodiment of the present invention during the packing process;

[0039] Figure 17 This is the second schematic diagram of the packaging equipment for cigarette packs according to an embodiment of this utility model.

[0040] Figure 18 This is the third schematic diagram of the structure of the packing equipment for cigarettes in this embodiment of the present invention during the packing process.

[0041] Figure 19 This is the fourth structural schematic diagram of the packing equipment for cigarettes in this embodiment of the present invention during the packing process.

[0042] Reference signs in the drawings:

[0043] 1-conveyor; 1.1-separation plate; 1.2-cigar stack position; 2-output table; 3-translation assembly; 3.1-translation frame; 3.2-horizontal slider; 3.3-horizontal guide rail; 3.4-translation motor; 3.5-transmission belt; 3.6-sprocket; 3.7-transmission shaft; 3.8-mounting plate; 4-pressing plate; 4.1-guide rod; 4.2-second limiting plate; 5-push plate; 6-first lifting assembly; 6.1-first lifting frame; 6.2-first limiting plate; 6.3-vertical guide rail; 6.4-rack; 6.5-transmission gear; 6.6-lifting motor; 6.7-vertical slider; 7-film roll; 7.1-packaging film; 8-film unwinding roller; 9-rack; 10-counterweight film passing assembly; 10.1-counterweight rod; 10.2-fixed guide roller; 10.3-limiting frame; 10.4-long limiting hole; 11-film guiding mechanism; 11.1-second lifting cylinder; 11.2-second lifting frame; 11.3-upper guide roller; 11.4-lower guide roller; 12-cigar stopping space; 13-lower cutter assembly; 13.1-third lifting cylinder; 13.2-PTFE film; 13.3-lower cutter seat; 13.4-cutter mounting groove; 13.5-end cover; 13.6-mounting platform; 13.7-pull ring; 13.8-heating wire; 13.9-lower heating pipe; 13.10-cutter; 13.11-groove; 14-upper cutter assembly; 14.1-upper cutter seat; 14.2-upper pressing strip; 14.3-cutting groove; 14.4-clamp block; 14.5-upper heating pipe; 14.6-clamp groove; 14.7-stop edge; 15-tensioning assembly; 15.1-pull plate; 15.2-fixing seat; 15.3-pull hook; 15.4-pivot; 15.5-spring; 16-cigar bundle. DETAILED DESCRIPTION

[0044] The utility model is further described below in combination with examples.

[0045] In the description of the utility model, it needs to be understood that the orientation description, such as the orientation or position relationship of up, down, front, back, left, right and the like indicated is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as the limitation of the utility model.

[0046] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceed and the like are understood as not including the number, above, below, within and the like are understood as including the number. If the first, second are described, it is only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0047] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0048] Embodiment:

[0049] As Figure 1 The packaging film sealing and cutting device comprises an upper knife assembly 14 and a lower knife assembly 13.

[0050] The upper knife assembly 14 comprises an upper knife seat 14.1 and two upper pressing strips 14.2, the upper knife seat 14.1 is made of metal and can conduct heat. The upper knife seat 14.1 is fixed to the lower edge of the first lifting frame 6.1, and an upper heating pipe 14.5 is arranged in the upper knife seat 14.1. The upper heating pipe 14.5 penetrates into a mounting hole in the upper knife seat 14.1, and the lower surface of the upper knife seat is provided with two parallel clamping grooves 14.6. A concave cutting groove 14.3 is arranged between the two clamping grooves 14.6. The material of the upper pressing strip 14.2 is foamed silica gel, which has a buffering effect. The upper surface of the upper pressing strip 14.2 is provided with a clamping block 14.4, and the clamping block 14.4 is clamped into the clamping groove, so that the upper pressing strip 14.2 is fixed to the lower surface of the upper knife seat 14.1.

[0051] As Figures 2 to 6As shown, the lower blade assembly 13 includes two lower blade holders 13.3, two heating wires 13.8, a high-temperature resistant protective film, a cutter 13.10, a third lifting assembly, and a mounting platform 13.6. The two lower blade holders 13.3 are fixedly mounted side-by-side on the mounting platform 13.6. A lower heating tube 13.9 is provided inside each lower blade holder 13.3, passing through a mounting hole in the lower blade holder 13.3. A groove 13.33 is provided on the upper surface of the lower blade holder 13.3, and the heating wires 13.8 are embedded in the groove 13.11, allowing for better heat transfer between the heating wires and the lower blade holders, resulting in a more stable and uniform temperature during welding. Tensioning components 15 are provided at both ends of the lower blade holder 13.3. The tensioning components 15 are connected to the ends of the heating wire 13.8. The tensioning components 15 always keep the heating wire 13.8 taut, so that the heating wire 13.8 remains flat. During welding, the heating wire 13.8 can better adhere to the packaging film and make more full contact with the packaging film, thereby better ensuring the welding quality and improving the packaging quality. A high-temperature resistant protective film is provided on the surface of the lower blade holder 13.3. In this embodiment, the high-temperature resistant protective film is a Teflon film 13.2. The Teflon film 13.2 also covers the heating wire 13.8, so that the heating wire 13.8 will not directly contact the packaging film during welding. Through the isolation of the Teflon film 13.2, the packaging film will not adhere to the lower blade holder 13.3 and the heating wire 13.8.

[0052] Among them, during welding, the groove 13.11 on the lower knife holder 13.3 near the edge of the packaged cigarette pack is provided. Figure 4 The lower cutter 13.3 on the right side is closer to the packaged cigarette pack (the lower cutter 13.3 is closer to the packaged cigarette pack), which makes the heating wire 13.8 embedded in the lower cutter 13.3 closer to the packaged cigarette pack, so that the welding seal during packaging is closer to the packaged cigarette pack.

[0053] During use, the upper heating element 14.5 and the lower heating element 13.9 ensure that the upper blade holder 14.1 and the lower blade holder 13.3 are always kept at a certain low temperature, meaning that both the upper blade holder 14.1 and the lower blade holder 13.3 have heat tracing capabilities. This temperature is relatively low, preventing damage to the packaging film or cigarette packs upon contact. The heat tracing is for faster and more stable heating during subsequent welding. The heating wire 138 is embedded in the heated lower blade holder 13.3, further ensuring a more stable and uniform temperature during welding.

[0054] It can be seen that the heating tube only functions to generate heat tracing, and in use, the heating tube provides heat tracing energy for the upper cutter assembly and the lower cutter assembly to eliminate the influence of external temperature or operation waiting, etc. The upper cutter assembly and the lower cutter assembly are kept in a low temperature state when no welding of the packaging film is performed, and even if the packaging film or the cigarette rod is touched, it will not be scalded, even if the cigarette rod is damaged, and the packaging film will not be adhered to the upper cutter assembly and the lower cutter assembly. The upper cutter assembly and the lower cutter assembly only generate high temperature in a short time through the heating wire 13.8 when welding is required.

[0055] As shown in Figure 5 and Figure 6 , the tensioning assembly 15 of the embodiment includes a fixed seat 15.2, a pull plate 15.1, and a spring 15.5. The fixed seat 15.2 is fixed on the mounting platform 13.6 and is close to the end face of the lower cutter seat 13.3. The lower end of the pull plate 15.1 is rotationally connected to the end of the fixed seat 15.2 away from the lower cutter seat 13.3 through a pin shaft 15.4. The spring 15.5 is sleeved on the pin shaft 15.4. One end of the spring 15.5 is pressed on the upper surface of the fixed seat 15.2, and the other end is pressed on the inner side surface of the pull plate 15.1. The spring 15.5 provides a force to keep the pull plate 15.1 turned outward. A pull hook 15.3 is arranged at the upper end of the pull plate 15.1, and a pull ring 13.7 is arranged at the end of the heating wire 13.8. The pull hook 15.3 is hooked on the pull ring 13.7, thereby tensioning the heating wire 13.8. The lower cutter assembly of the embodiment is provided with end covers 13.5, and the position of the tensioning assembly 15 is covered by the end covers 13.5.

[0056] A cutter mounting groove 13.4 is arranged between the two lower cutter seats 13.3, and a cutter 13.10 is mounted in the cutter mounting groove 13.4. The third lifting assembly includes a third lifting cylinder 13.1, which is vertically upwardly mounted below the cutter mounting groove 13.4. The lower end of the cutter 13.10 is connected to the upper end of the third lifting cylinder 13.1. The third lifting cylinder 13.1 drives the cutter 13.10 to lift and lower, so as to cut off the packaging film 7.1.

[0057] The following describes a cigarette rod packaging equipment provided with the packaging film sealing and cutting device of the embodiment, so as to further understand the packaging film sealing and cutting device of the embodiment.

[0058] As shown in Figures 7 to 15 , the cigarette rod packaging equipment provided with the packaging film sealing and cutting device of the embodiment includes a rack 9, a film guiding mechanism 11, a pressing and conveying mechanism, an upper cutter assembly 14, a lower cutter assembly 13, an output table 2, a film placing roller 8, a counterweight film passing assembly 10, and a conveyor 1.

[0059] The middle part of the rack 9 is provided with a carton cigarette staying space 12, one end of the conveyor 1 is located in the carton cigarette staying space 12, and the conveying belt of the conveyor 1 is provided with a partition plate 1.1, which separates the space on the conveying belt into a plurality of carton cigarette stacking positions 1.2. The carton cigarettes to be packed are neatly stacked in the carton cigarette stacking positions 1.2, and are conveyed to the carton cigarette staying space 12 by the conveyor 1 for packing. The conveyor 1 of the embodiment is a chain plate conveyor.

[0060] As shown in Figure 10 and Figure 11 , film unwinding rollers 8 and counterweight film passing assemblies 10 are arranged on both sides of the carton cigarette staying space 12, and the counterweight film passing assemblies 10 are located between the film unwinding rollers 8 and the conveyor 1. The structure of the film unwinding rollers 8 can adopt the unpowered film feeding mechanism provided in the Chinese patent with the application number 202021433095.3, or a conventional mechanism in which the rollers are driven to rotate by a film unwinding motor. During use, the film rolls 7 are installed on the film unwinding rollers 8 on both sides, and the packaging films 7.1 of the film rolls 7 on both sides are connected together and span over the carton cigarette staying space 12.

[0061] As shown in Figure 13 , the counterweight film passing assembly 10 of the embodiment is provided with two corresponding limiting frames 10.3 and a counterweight rod 10.1, the limiting frames 10.3 are fixedly connected to the rack 9, the limiting frames 10.3 on both sides are respectively provided with vertical long limiting holes 10.4, the counterweight rod 10.1 is located between the two limiting frames 10.3, the two ends of the counterweight rod 10.1 are respectively matched with the long limiting holes 10.4, and the counterweight rod 10.1 can freely move up and down. The counterweight film passing assembly of the embodiment is also provided with two fixed guide rollers 10.2, which are respectively fixed between the two limiting frames 10.3 and located on both sides of the upper surface of the long limiting hole 10.4. Figure 10 As shown in , during use, the packaging films 7.1 on both sides will first pass over the upper surface of the fixed guide rollers 10.2 close to the film rolls 7, then pass under the counterweight rod 10.1, and finally pass over the upper surface of the fixed guide rollers 10.2 away from the film rolls 7. During use, the counterweight rod 10.1 applies its own gravity to the packaging film 7.1, the counterweight rod 10.1 can keep the packaging film 7.1 under a certain tension, which can prevent the packaging film 7.1 from sagging due to the rotational inertia of the film roll 7, and the packaging film 7.1 kept under a certain tension can better ensure the tightness of the packing.

[0062] Figure 10 and Figure 11 , film guide mechanisms 11 are arranged on both sides of the carton cigarette staying space 12, and the packaging films 7.1 spanning over the carton cigarette staying space 12 are simultaneously lifted and lowered by the film guide mechanisms 11 on both sides during use. Figure 12As shown, the film guiding mechanism includes a second lifting assembly, an upper guide roller 11.3 and a lower guide roller 11.4. The second lifting assembly includes a second lifting cylinder 11.1 and a second lifting frame 11.2. The second lifting cylinder 11.1 is vertically upwardly mounted on both sides of the cigarette resting space 12. The second lifting frame 11.2 is connected to the upper end of the second lifting cylinder 11.1 and is driven by the second lifting cylinder 11.1 to move up and down. The upper guide roller 11.3 and the lower guide roller 11.4 are respectively transversely arranged on the upper edge and the lower edge of the second lifting frame 11.2 of the second lifting assembly. Figure 10 As shown, in use, the two side wrapping films 7.1 are wrapped around from below the lower guide roller 11.4 and from above the upper guide roller 11.3. When the second lifting cylinder 11.1 drives the second lifting frame 11.2 to rise, the wrapping film 7.1 across the cigarette resting space 12 can be lifted. During the rising process, the wrapping film 7.1 is naturally tightened. When the second lifting cylinder 11.1 drives the second lifting frame 11.2 to descend, the wrapping film 7.1 can cover the cartons of cigarettes resting in the cigarette resting space 12. The lower guide roller 11.4 pulls the wrapping film 7.1 downward, so that the wrapping is more compact.

[0063] As shown, Figure 10 The output table 2 is arranged on one side of the cigarette resting space 12 and above the film placing roller 8 on the same side. The output table 2 uses a conveying belt to convey the packed cartons of cigarettes outward. The upper conveying surface of the output table 2 is flush with the upper conveying surface of the conveying machine 1.

[0064] The pressing mechanism is used to push the cartons of cigarettes wrapped with the wrapping film in the cigarette resting space 12 to one side onto the output table 2. As shown, Figure 11 , Figure 14 and Figure 15 The pressing mechanism of the present embodiment includes a translation assembly 3, a first lifting assembly 6 and a pushing plate 5. The translation assembly 3 is arranged above the cigarette resting space 12. The translation assembly 3 includes a translation motor 3.4, a transmission belt 3.5 mounted on both sides through a chain wheel 3.6 and a translation frame 3.1. Two parallel horizontal guide rails 3.3 are arranged on the upper end of the machine frame 9. The extension direction of the horizontal guide rails 3.3 is parallel to the extension direction of the transmission belt 3.5. The translation frame 3.1 is arranged on the two horizontal guide rails 3.3. The two side edges of the translation frame 3.1 are respectively slidably connected to the horizontal guide rails 3.3 through horizontal sliding blocks 3.2. The two side edges of the translation frame 3.1 are also respectively fixedly connected to the transmission belts 3.5 on both sides. The translation motor 3.4 is connected to the chain wheels 3.6 on both sides through a transmission shaft 3.7. The translation motor 3.4 can drive the transmission belt 3.5 to rotate, thereby driving the translation frame 3.1 to translate.

[0065] The first lifting assembly 6 is arranged on the translation frame 3.1 of the translation assembly 3 and translates with the translation frame 3.1. The first lifting assembly 6 comprises a lifting motor 6.6 and a first lifting frame 6.1. The lifting motor 6.6 is horizontally fixedly arranged on the translation frame 3.1. A transmission gear 6.5 is arranged on an output shaft of the lifting motor 6.6. The back of the first lifting frame 6.1 is provided with vertical guide rails 6.3. A vertical sliding block 6.7 is fixedly arranged on the translation frame 3.1. The vertical guide rails 6.3 are slidingly connected to the vertical sliding block 6.7, so that the first lifting frame 6.1 can slide up and down on the translation frame 3.1. A vertical rack 6.4 is further arranged on the back of the first lifting frame 6.1. The rack 6.4 is engaged with the transmission gear 6.5, so that the first lifting frame 6.1 can be driven to slide up and down by the lifting motor 6.6. The push plate 5 is vertically fixedly arranged on the front of the first lifting frame 6.1 and close to the lower edge of the first lifting frame 6.1. The push plate 5 is used to push the packaged cigarettes.

[0066] The push plate 5 is vertically fixedly arranged on the front of the first lifting frame 6.1 and close to the lower edge of the first lifting frame 6.1. The push plate 5 is used to push the packaged cigarettes.

[0067] The push plate 5 is vertically fixedly arranged on the front of the first lifting frame 6.1 and close to the lower edge of the first lifting frame 6.1. The push plate 5 is used to push the packaged cigarettes.

[0068] The upper cutter assembly 14 of the present embodiment is provided with a downwardly protruding blocking edge 14.7 on the side close to the output table 2, the lower edge of the blocking edge 14.7 is lower than the lower surface of the upper pressing strip 14.2, and the position of the blocking edge 14.7 is staggered with the position of the lower cutter seat 13.3. When the upper cutter assembly 14 and the lower cutter assembly 13 are closed one on top of the other, the blocking edge 14.7 will be located outside the lower cutter seat 13.3. As shown in Figure 17 when the strip-packed cigarettes wrapped with the packaging film are pushed towards the output table 2 by the push plate 5, the blocking edge 14.7 will prevent the packaging film from adhering to the lower surface of the upper pressing strip 14.2, and there will be no friction between the packaging film and the upper pressing strip 14.2 during the pushing process, thereby reducing the resistance during pushing.

[0069] The use process of the strip-packed cigarette packaging equipment described above is as follows:

[0070] Before use, as shown in Figure 10 the film roll 7 is installed on the film placing roller 8, the film roll 7 is wound around the counterweight film passing assembly 10 and the film guiding mechanism 11, and the packaging film 7.1 of the film roll 7 on both sides is welded together. In the initial state, the second lifting frame 11.2 of the film guiding mechanism 11 is in the state of being lifted to the high position, the packaging film 7.1 above the conveyor 1 is lifted upwards, and the packaging film 7.1 will not hinder the operation of the conveyor 1 and the feeding of the strip-packed cigarettes. The upper heating tube 14.5 and the lower heating tube 13.9 always maintain heating, so that the upper cutter assembly and the lower cutter assembly always maintain a certain low temperature state.

[0071] The following packaging process is:

[0072] 1. The strip-packed cigarettes 16 neatly stacked in the strip-packed cigarette stacking position 1.2 are conveyed to the strip-packed cigarette stopping space 12 by the conveyor 1 and stopped, at this time, the strip-packed cigarettes 16 stacked in the strip-packed cigarette stacking position 1.2 are just below the packaging film 7.1 lifted up.

[0073] 2. The film guiding mechanism 11 drives the second lifting frame 11.2 to descend, the packaging film 7.1 is lowered and wrapped around the strip-packed cigarettes 16, in this process, the lower guide roller 11.4 pulls the packaging film 7.1 downwards, so that the packaging film 7.1 can be wrapped more tightly around the strip-packed cigarettes 16. When the second lifting frame 11.2 is lowered into position, the upper surface of the upper guide roller 11.3 is basically flush with the upper conveying surface of the conveyor 1.

[0074] 3. The first lifting frame 6.1 of the pressing mechanism descends, which will drive the push plate 5 and the upper knife assembly 14 to descend together. At the same time, the pressing plate 4 also descends. During the descent, the pressing plate 4 first presses against the top of the carton of cigarettes 16. Then, the first lifting frame 6.1 continues to descend, and the first limiting plate 6.2 will detach from the second limiting plate 4.2. The pressing plate 4 presses down on the carton of cigarettes 16 by its own weight. When the first lifting frame 6.1 descends to its final position, there is only a small distance between the bottom of the upper knife assembly 14 and the upper conveying surface of the conveyor 1, preferably 5mm. Figure 16 As shown.

[0075] 4. The translation component 3 of the pressing mechanism moves to the side where the output platform 2 is located. The pusher plate 5 pushes the carton of cigarettes 16 wrapped with packaging film 7.1 towards the output platform 2. During the pushing process, the packaging film 7.1 will be pulled, making the packaging film 7.1 wrap the carton of cigarettes 16 more tightly. Finally, the carton of cigarettes 16 is completely pushed onto the output platform. At this time, the upper knife component 14 will be vertically aligned with the lower knife component 13, that is, the upper pressing strip 14.2 and the lower knife seat 13.3 are vertically aligned, the cutter 13.10 and the cutting groove 14.3 are vertically aligned, and the positions of the upper knife component 14 and the lower knife component 13 are close to the packaged carton of cigarettes.

[0076] 5. The first lifting frame 6.1 of the pressing mechanism descends again, causing the upper knife assembly 14 and the lower knife assembly 13 to close vertically. The upper pressure strip 14.2 of the upper knife assembly 14 presses onto the lower knife seat 13.3. The upper pressure strip 14.2, made of foamed silicone material, provides cushioning. The packaging film 7.1 will be pressed between the upper knife assembly 14 and the lower knife assembly 13. At this time, if... Figure 17 As shown. Then the heating wire 13.8 heats up instantly, and the upper and lower layers of packaging film 7.1 at the positions of the two heating wires 13.8 are fused together. After that, the third lifting component drives the cutter 13.10 to rise and cut the packaging film 7.1 between the two fused positions.

[0077] 6. Simultaneously, the film guiding mechanism 11 drives its second lifting frame 11.2 to rise, lifting the packaging film 7.1 again. The conveyor 1 transports the neatly stacked cartons of cigarettes 16 from the next cigarette stacking position 1.2 to the cigarette holding space 12. At this time, if... Figure 18 As shown.

[0078] 7. Next, the first lifting frame 6.1 of the pressing mechanism rises and resets. During the rising process, when the first limiting plate 6.2 is under the second limiting plate 4.2, it will rise together with the cigarette pressing plate 4 to the initial position. At the same time, the packaged cigarettes 16 on the output table 2 will be conveyed out. Figure 19 As shown. Then, the translation component 3 returns to its initial position, and the next packaging can then proceed.

[0079] The above embodiments of the utility model are not the limitation of the protection scope of the utility model, and the implementation mode of the utility model is not limited to this, and according to the above content of the utility model, according to the ordinary technical knowledge and usual means in the field, other various forms of modification, replacement or change of the above structure of the utility model are made without departing from the above basic technical thought of the utility model, and all should fall within the protection scope of the utility model.

Claims

1. A package film sealing and cutting apparatus characterized by: The upper knife assembly comprises an upper knife seat, an upper heating tube arranged in the upper knife seat for generating heat, and an upper pressing strip fixed below the upper knife seat.

2. The package film sealing and cutting apparatus according to claim 1, characterized by: The upper surface of the lower knife seat is provided with a recess, and the heating wire is inlaid in the recess.

3. The package film sealing and cutting apparatus according to claim 1, wherein: Tensioning assemblies are respectively arranged at both ends of the lower knife seat, the tensioning assemblies are connected with the end portions of the heating wire, and the tensioning assemblies always keep the heating wire taut.

4. The package film sealing and cutting apparatus according to claim 3, wherein: The tensioning assembly comprises a fixing seat, a pull plate and a spring, one end of the pull plate is rotationally connected to the fixing seat, the other end of the pull plate is connected with the end portion of the heating wire, and the spring provides a force for keeping the pull plate turned outward.

5. The package film sealing and cutting apparatus according to claim 4, wherein: The end of the pull plate for being connected with the end portion of the heating wire is provided with a pull hook, the end portion of the heating wire is provided with a pull ring, and the pull hook is hooked on the pull ring.

6. The package film sealing and cutting apparatus of claim 1, wherein: The heating wire on the lower knife seat close to the packaged cigarettes during welding is arranged at the edge of the lower knife seat close to the packaged cigarettes.

7. The package film sealing and cutting apparatus of claim 1, wherein: The high-temperature-resistant protective film is a Teflon film.

8. The package film sealing and cutting apparatus of claim 1, wherein: A cutter mounting groove is arranged between the two lower knife seats, the cutter is mounted in the cutter mounting groove, the third lifting assembly is mounted below the cutter mounting groove, and the lower end of the cutter is connected with the third lifting assembly.

9. The package film sealing and cutting apparatus of claim 8, wherein: The lower surface of the lower knife seat is provided with a clamping groove, and the upper surface of the upper pressing strip is provided with a clamping block which is clamped into the clamping groove.

10. The package film sealing and cutting apparatus of claim 1, wherein: The lower surface of the lower knife seat is provided with a clamping groove, and the upper surface of the upper pressing strip is provided with a clamping block which is clamped into the clamping groove.

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