A wet kraft paper sealing machine

Abstract

A wet kraft paper sealing machine includes an upper sealing device and a lower sealing device, both comprising a paper rack and a paper pressing guide assembly. Wet kraft paper rolls are placed on the paper rack. The wet kraft paper is guided by a paper feeding guide to a wet kraft paper humidification and heating device. After passing through the wet kraft paper humidification and heating device, the paper awaits packaging at the outlet of the upper and lower sealing devices. A wet kraft paper pressure section is located above the paper inlet of the wet kraft paper humidification and heating device. The water inlet and outlet holes of the two wet kraft paper humidification and heating devices are connected via pipes to a water storage tank located on the lower end of the roller layer frame. Paper pressing guide assemblies are located on the front and rear sides of both the upper and lower sealing devices, with the paper pressing guide assemblies positioned behind the corresponding wet kraft paper rolls. Advantages include: the electromagnetic drive unit applies pressure to the cover plate, further pressurizing the wet kraft paper for smooth operation; the wet kraft paper humidification and heating device heats and humidifies the wet kraft paper, increasing its adhesion and facilitating sealing.

Description

Technical Field

[0001] This invention patent relates to the field of packaging box sealing technology, and in particular to a wet kraft paper sealing machine. Background Technology

[0002] A carton sealing machine is a commonly used packaging machine, mainly used for sealing cartons or boxes. It is suitable for standalone operation or for forming an automated packaging production line with carton openers and carton packers. It uses sealing tape to seal the cartons and can seal both the top and bottom sides of the carton at the same time. It features fast packaging speed, high efficiency, and aesthetically pleasing packaging. When using a carton sealing machine, the packaging box is first clamped by a belt, then the height of the packaging box is measured by a height measuring wheel to adjust the height position of the sealing core, and finally the sealing core is used to seal the packaging box with tape.

[0003] Existing carton sealing machines generally use normal adhesive tape for sealing. If wet kraft paper is used, its adhesion is low when it is not in contact with water or has just come into contact with water, making it difficult to drive and resulting in poor sealing effect. Existing water storage tanks are located at the top of the upper sealing device, which makes it easy for water to leak and spill. Summary of the Invention

[0004] The purpose of this invention is to solve the existing technical problems by proposing a wet kraft paper sealing machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a wet kraft paper carton sealing machine, comprising a frame, an adjustable-width carton feeding mechanism, an upper sealing device, and a lower sealing device. The frame is provided with a roller layer, and the roller layer is equipped with an adjustable-width carton feeding mechanism for conveying the packaging boxes. The upper sealing device is mounted on a crossbeam between lifting columns on both sides of the upper end of the roller layer, and is used to adhere the wet kraft paper to the upper half of the packaging box. The lower sealing device is located below the roller layer, and is used to adhere the wet kraft paper to the lower half of the packaging box. A notch is provided on the roller layer corresponding to the lower sealing device. The upper and lower sealing devices are arranged opposite to each other, cooperating with the adjustable-width carton feeding mechanism to form a sealing mechanism. The packaging box passes through a channel; both the upper and lower sealing devices include a paper rack and a paper pressing guide assembly. The paper rack holds a roll of wet kraft paper, which is guided to a wet kraft paper humidification and heating device via a paper feeding guide. After passing through the wet kraft paper humidification and heating device, the paper roll waits for the packaging box at the outlet of the upper and lower sealing devices. A wet kraft paper pressing part is located above the paper inlet of the wet kraft paper humidification and heating device. The water inlet and outlet holes of the two wet kraft paper humidification and heating devices are connected to a water storage tank located on the lower end of the frame of the roller layer through pipes. Paper pressing guide assemblies are provided on the front and rear sides of both the upper and lower sealing devices, and the paper pressing guide assemblies are located on the rear side of the corresponding wet kraft paper.

[0006] Furthermore, the top sealing device includes a first outer shell, which is mounted on a crossbeam between two lifting columns. A first fixing plate is provided at the upper rear end of the first outer shell. The upper end of the first fixing plate is connected to the center of the paper rack via a shaft. A roll of wet kraft paper is placed on the paper rack. The paper feeding guide includes a conveying mounting plate, a second mounting frame, a first guide roller, and a second guide roller. Two symmetrical conveying mounting plates are provided on the first outer shell at the front end of the paper rack. A first guide roller is provided between the upper front ends of the two conveying mounting plates. The lower rear ends of the two conveying mounting plates are connected to the corresponding rotating shafts at the lower end of the second mounting frame. A second guide roller is provided at the upper end of the second mounting frame. A wet kraft paper pressing part is provided on the first outer shell at the front end of the paper feeding guide. A wet kraft paper humidification and heating device is provided inside the first outer shell at the lower end of the wet kraft paper pressing part. A paper pressing guide assembly is provided inside the first outer shell at the rear end of the wet kraft paper humidification and heating device.

[0007] The lower sealing device includes a second outer shell, which is located within a notch in the roller layer. The lower sides of the front and rear ends of the second outer shell are mounted on two fixed frames at the lower end of the roller layer. A second fixed plate is located at the lower rear end of the second outer shell. The upper end of the second fixed plate is connected to the center of the paper holder via a shaft. A roll of wet kraft paper is mounted on the paper holder. The paper feeding guide includes a conveying mounting plate, a second mounting frame, a first guide roller, and a second guide roller. Two symmetrical conveying mounting plates are located at the lower end of the second outer shell at the front end of the paper holder. A first guide roller is located between the lower front ends of the two conveying mounting plates. The upper rear ends of the two conveying mounting plates are connected to the corresponding rotating shafts at the upper end of the second mounting frame. A second guide roller is located at the lower end of the second mounting frame. A wet kraft paper pressing section is located on the second outer shell at the front end of the paper feeding guide. A wet kraft paper humidification and heating device is located inside the second outer shell above the wet kraft paper pressing section. A paper pressing guide assembly is located inside the second outer shell at the rear end of the wet kraft paper humidification and heating device.

[0008] Furthermore, a brake pad is provided on the side wall of the second mounting bracket corresponding to the side wall of the paper holder. When the second mounting bracket returns to its original position, the brake pad contacts the side wall of the paper holder.

[0009] Furthermore, the wet kraft paper pressing section includes a pressing mounting frame, a third guide roller shaft, a rotating shaft, a drive assembly, a cover plate, a pressing shaft, a first mounting frame, a paper counting mechanism, and an electromagnetic drive unit. The first mounting frame has a pressing mounting frame at its upper end, a wet kraft paper passage channel on its front side, and protruding mounting ears on both sides of the front side of the first mounting frame. The skirts on both sides of the middle part of the cover plate are rotatably connected to the opposite sides of the two mounting ears through a first rotating shaft and a torsion spring under constant pressure. The pressing shaft is located at the lower end of the cover plate. The pressing mounting frame is fixedly connected to the outer surfaces of the two mounting ears on both sides. The electromagnetic drive unit is located at the lower middle part of the pressing mounting frame. The front side of the first mounting frame has a cutout at the location of the pressing shaft corresponding to the wet kraft paper passage channel. The rotating shaft is located at the location of the cutout on the back side of the first mounting frame. One side of the rotating shaft is connected to the paper counting mechanism for calculating the length of the wet kraft paper, and the other side of the rotating shaft is connected to the drive assembly through a pulley and a belt. The electromagnetic drive unit drives the pressing shaft at the lower end of the cover plate to pass through the cutout and press the wet kraft paper corresponding to the rotating shaft.

[0010] Furthermore, the wet kraft paper humidification and heating device includes a box, a sponge column, a heat-conducting support plate, a pendant, a heating element, and a fourth guide roller. An extension is provided on the outer rear end of the box, with an outwardly expanding wet kraft paper humidification channel at the upper end of the extension. The box contains an inner cavity, and a first notch is provided on the rear end face of the box. The sponge column is placed in the inner cavity and abuts against the first notch. Water inlet and outlet holes communicating with the inner cavity are provided on the front end face of the box, and these holes are lower than the lower end face of the first notch. A second rotating shaft is located at the lower end of the inlet of the wet kraft paper humidification channel. The upper end of the heat-conducting support plate is hung on the inner side of the second rotating shaft. The lower end of the heat-conducting support plate has a rearward hook-shaped structure to form a platform. A heating element is provided in the platform, and a protective sheet is provided behind the heating element. The front side of the heating element is in contact with the heat-conducting support plate. A column is provided on the outer side of the second rotating shaft, and a pendant with an adjustable position is provided on the column. The pendant is pressed down on the protective sheet, so that the lower front side of the heat-conducting support plate is further in contact with the sponge column at the first notch. A fourth guide roller shaft is provided on the box at the lower end of the heat-conducting support plate.

[0011] Furthermore, a carton sensor and a distance sensor are provided at the lower front end of the upper and lower sealing devices.

[0012] Furthermore, the wet kraft paper has an outward expansion structure at the entrance of the channel; the outward expansion of the wet kraft paper humidification channel is an inverted 7-shaped structure, including an integrally formed horizontal section and a sloping section, the horizontal section being fixed to the entrance of the wet kraft paper humidification channel; a water-guiding perforation is provided at the connection between the horizontal section and the sloping section; a water baffle is provided at the exit of the wet kraft paper through the channel.

[0013] Furthermore, the paper counting mechanism is an encoding wheel assembly; the drive assembly is a unidirectional drive assembly; the outer side of the upper sealing device's housing has a locking hole, and the corresponding mounting shaft passes through the first housing and is inserted into the locking hole to fix the housing and the first housing; the outer side of the lower sealing device's housing has a locking hole, and the corresponding mounting shaft passes through the second housing and is inserted into the locking hole to fix the housing and the second housing; a water pump is provided on the water storage tank to transport water into the housing; and paper pressing wheels are also provided on the rear side of the upper and lower sealing devices.

[0014] Furthermore, the paper pressing guide assembly includes a cylinder assembly, a front paper pressing guide, and a rear paper pressing guide. The cylinder assembly is disposed within the first housing and the second housing. The drive shaft of the cylinder assembly is connected to the upper end of the rear paper pressing guide. The upper end of the rear paper pressing guide is also rotatably connected to one end of a connecting rod. The middle part of the rear paper pressing guide is rotatably connected to the first housing and the second housing. A rear paper pressing guide wheel is provided at the lower part of the rear paper pressing guide. The upper end of the front paper pressing guide is rotatably connected to the first housing and the second housing. The middle part of the front paper pressing guide is rotatably connected to the other end of the connecting rod. A front paper pressing guide wheel is provided at the lower part of the front paper pressing guide. The front paper pressing guide and the rear paper pressing guide are combined to form a figure-eight shape.

[0015] Furthermore, the wet kraft paper end, the front pressure guide wheel, and the rear pressure guide wheel of the lower sealing device pass through the gap in the roller layer.

[0016] The beneficial effect of the present invention is that after the paper is fed by the paper feeding guide, the paper frame is restricted from rotating by the springback due to the tension of the wet kraft paper.

[0017] The electromagnetic drive unit drives the pressure shaft at the lower end of the cover plate to pass through the hollow and apply pressure to the wet kraft paper corresponding to the rotating shaft, so that the wet kraft paper can move forward smoothly.

[0018] The humidification and heating device for wet kraft paper heats and humidifies the paper to improve its adhesion and facilitates sealing.

[0019] The cylinder assembly of the paper pressing guide component can still work in place without error even after long-term use; wet kraft paper is used as the sealing material, which is environmentally friendly and biodegradable;

[0020] The water-guiding perforations and baffles on the humidification channel of the wet kraft paper prevent the wet kraft paper inside the pressure section from getting wet and causing paper jams.

[0021] The box is easy to disassemble, and the counting is accurate and precise.

[0022] The water tank is located at the bottom of the frame, making it easy to install and replace. It has a long service life and a large capacity, avoiding the problem of water leakage and paper jams that occurs when replacing or adding water in existing products where the tank is located at the top of the frame. Attached Figure Description

[0023] Figure 1 Schematic diagram of a carton sealing machine Figure 1 .

[0024] Figure 2 Schematic diagram of a carton sealing machine Figure 2 .

[0025] Figure 3 This is a schematic diagram of the roller layer structure.

[0026] Figure 4 Schematic diagram of the upper sealing device Figure 1 .

[0027] Figure 5 Schematic diagram of the upper sealing device Figure 2 .

[0028] Figure 6 Schematic diagram of the upper sealing device Figure 3 .

[0029] Figure 7 Schematic diagram of the lower sealing device Figure 1 .

[0030] Figure 8 Schematic diagram of the lower sealing device Figure 2 .

[0031] Figure 9 Schematic diagram of the lower sealing device Figure 3 .

[0032] Figure 10 Schematic diagram of the structure of the wet kraft paper pressing section and the wet kraft paper humidification and heating device of the upper sealing device. Figure 1 .

[0033] Figure 11 Schematic diagram of the structure of the wet kraft paper pressing section and the wet kraft paper humidification and heating device of the upper sealing device. Figure 2 .

[0034] Figure 12 This is a cross-sectional view of the wet kraft paper pressure section and the wet kraft paper humidification and heating device of the upper sealing device.

[0035] Figure 13 Schematic diagram of the structure of the wet kraft paper pressing section and the wet kraft paper humidification and heating device of the lower sealing device. Figure 1 .

[0036] Figure 14 Schematic diagram of the structure of the wet kraft paper pressing section and the wet kraft paper humidification and heating device of the lower sealing device. Figure 2 .

[0037] Figure 15 This is a cross-sectional view of the wet kraft paper pressurizing section and the wet kraft paper humidification and heating device of the lower sealing device.

[0038] 1 is the frame; 11 is the lifting column; 12 is the crossbar; 13 is the notch; 14 is the paper holder; 15 is the wet kraft paper; 16 is the water tank; 17 is the wet kraft paper roll; 18 is the paper pressing roller;

[0039] 2 is an adjustable width box feeding mechanism;

[0040] 3 is the upper sealing device; 31 is the first outer shell; 32 is the first fixing plate;

[0041] 4 is the lower sealing device; 41 is the second outer shell; 42 is the second fixing plate;

[0042] 5 represents the roller layer;

[0043] 6 is the wet kraft paper pressing section; 61 is the pressing mounting frame; 62 is the third guide roller shaft; 63 is the rotating shaft; 64 is the drive assembly; 65 is the cover plate; 66 is the pressing shaft; 67 is the first mounting frame; 68 is the paper counting mechanism; 69 is the electromagnetic drive section; 60 is the wet kraft paper passage channel; 601 is the outward expansion structure; 602 is the water baffle; 651 is the first rotating shaft; 652 is the torsion spring; 671 is the mounting ear; 672 is the cutout.

[0044] 7 is the paper pressing guide assembly; 71 is the cylinder assembly; 72 is the front paper pressing guide; 73 is the rear paper pressing guide; 74 is the connecting rod; 75 is the rear paper pressing guide wheel; 76 is the front paper pressing guide wheel;

[0045] 8 is the paper feeding guide; 81 is the conveying mounting plate; 82 is the second mounting bracket; 83 is the first guide roller; 84 is the second guide roller; 85 is the brake pad;

[0046] 9 is the humidification and heating device for wet kraft paper; 91 is the housing; 92 is the sponge column; 93 is the heat-conducting support plate; 94 is the pendant; 95 is the heating element; 96 is the fourth guide roller shaft; 97 is the humidification channel for wet kraft paper; 98 is the second rotating shaft; 99 is the column; 911 is the first notch; 912 is the water inlet and outlet hole; 913 is the locking hole; 971 is the inverted 7-shaped structure; 972 is the water guide perforation; 914 is the mounting shaft. Detailed Implementation

[0047] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0048] Example 1 combined with appendix Figure 1-15A wet kraft paper carton sealing machine includes a frame 1, an adjustable-width carton feeding mechanism 2, an upper sealing device 3, and a lower sealing device 4. The frame has a roller layer 5, on which the adjustable-width carton feeding mechanism is installed for conveying the packaging boxes. The upper sealing device 3 is mounted on a crossbeam 12 between lifting columns 11 on both sides of the upper end of the roller layer 5, and is used to attach wet kraft paper 15 to the upper half of the packaging box. The lower sealing device 4 is located below the roller layer 5, and is used to attach wet kraft paper to the lower half of the packaging box. A notch 13 is provided on the roller layer corresponding to the lower sealing device. The upper and lower sealing devices are positioned opposite each other, cooperating with the adjustable-width carton feeding mechanism to allow the packaging boxes to pass through. The upper and lower sealing devices both include a paper rack 14 and a paper pressing guide assembly 7. The paper rack is equipped with a roll of wet kraft paper. The wet kraft paper is guided to the wet kraft paper humidification and heating device through the paper feeding guide 8. After passing through the wet kraft paper humidification and heating device 9, it waits for the packaging box at the outlet of the upper and lower sealing devices. The wet kraft paper humidification and heating device is equipped with a wet kraft paper pressing part 6 above the paper inlet. The water inlet and outlet holes of the two wet kraft paper humidification and heating devices are connected to the water storage tank 16 located on the lower end of the roller layer through pipes. The upper and lower sealing devices are equipped with paper pressing guide assemblies 7 on the front and rear sides, and the paper pressing guide assemblies are located on the rear side of the corresponding wet kraft paper.

[0049] A wet kraft paper sealing machine includes a sealing device comprising a first housing 31 mounted on a crossbeam between two lifting columns. A first fixing plate 32 is mounted on the upper rear end of the first housing. The upper end of the first fixing plate is connected to the center of a paper rack 14 via a shaft. A wet kraft paper roll 17 is mounted on the paper rack. A paper feeding guide 8 includes a conveying mounting plate 81, a second mounting frame 82, a first guide roller shaft 83, and a second guide roller shaft 84. Two symmetrical conveying mounting plates 81 are mounted on the first housing 31 at the front end of the paper rack 14. A first guide roller shaft 83 is located between the upper front ends of the two conveying mounting plates. The lower rear ends of the two conveying mounting plates are connected to the corresponding lower ends of the second mounting frame 82 via rotating shafts. A second guide roller shaft 84 is located on the upper end of the second mounting frame 82. A wet kraft paper pressing part 6 is mounted on the first housing 31 at the front end of the paper feeding guide 8. A wet kraft paper humidification and heating device 9 is located inside the first housing at the lower end of the wet kraft paper pressing part. A paper pressing guide assembly 7 is located inside the first housing at the rear end of the wet kraft paper humidification and heating device.

[0050] The lower sealing device includes a second outer shell 41. The second outer shell is located inside a notch in the roller layer. One end of the roller in the roller layer at the notch is rotatably connected to the corresponding side of the second outer shell. The lower sides of the front and rear ends of the second outer shell are mounted on two fixed frames at the lower end of the roller layer. A second fixed plate 42 is located at the lower rear end of the second outer shell. The upper end of the second fixed plate is connected to the center of the paper rack 14 via a shaft. The paper rack has a roll of wet kraft paper. The paper feeding guide includes a conveying mounting plate 81, a second mounting frame 82, a first guide roller 83, and a second guide roller 84. The lower end of the second outer shell at the front end of the paper rack has two symmetrical conveying mounting plates. A first guide roller is located between the lower sides of the front ends of the two conveying mounting plates. The upper sides of the rear ends of the two conveying mounting plates are connected to the corresponding side of the upper end of the second mounting frame via a rotating shaft. The lower end of the second mounting frame has a second guide roller. The second outer shell at the front end of the paper feeding guide has a wet kraft paper pressing part. A wet kraft paper humidification and heating device is located inside the second outer shell at the upper end of the wet kraft paper pressing part. A paper pressing guide assembly is located inside the second outer shell at the rear end of the wet kraft paper humidification and heating device.

[0051] A wet kraft paper sealing machine has a brake pad 85 on the side wall of the second mounting frame corresponding to the side wall of the paper rack. When the second mounting frame returns to its original position, the brake pad contacts the side wall of the paper rack.

[0052] A wet kraft paper sealing machine includes a wet kraft paper pressing unit 6 comprising a pressing mounting frame 61, a third guide roller shaft 62, a rotating shaft 63, a drive assembly 64, a cover plate 65, a pressing shaft 66, a first mounting frame 67, a paper counting mechanism 68, and an electromagnetic drive unit 69. The first mounting frame 67 has a pressing mounting frame 61 at its upper end, a wet kraft paper passage 60 on its front side, and protruding mounting ears 671 on both sides of its front side. The two side skirts of the middle portion of the cover plate 65 are rotatably connected to the opposite sides of the two mounting ears via a first rotating shaft 651 and a torsion spring 652 under constant pressure. The lower end of the cover plate has a pressing shaft 66. The pressure mounting bracket 61 is fixedly connected to the outer surfaces of the two mounting ears on both sides. An electromagnetic drive unit 69 is provided at the lower middle part of the pressure mounting bracket 61. A cutout 672 is provided on the front of the first mounting bracket at the location of the pressure shaft corresponding to the passage of wet kraft paper. A rotating shaft 63 is provided on the back of the first mounting bracket at the location of the cutout. A paper counting mechanism 68 for calculating the length of wet kraft paper is connected to one side of the rotating shaft 63. A drive assembly 64 is connected to the other side of the rotating shaft through a pulley and a belt. The electromagnetic drive unit 69 drives the pressure shaft at the lower end of the cover plate to pass through the cutout and apply pressure to the wet kraft paper corresponding to the rotating shaft. The torsion spring drives the cover plate to reset after being driven by the electromagnetic drive unit.

[0053] A wet kraft paper sealing machine includes a wet kraft paper humidification and heating device 9 for the upper sealing unit. The device comprises a box body 91, a sponge column 92, a heat-conducting support plate 93, a pendant 94, a heating element 95, and a fourth guide roller 96. An extension is provided on the outer rear end of the box body, with an outwardly expanding wet kraft paper humidification channel 97 at its upper end. An inner cavity is provided inside the box body, and a first notch 911 is provided on the rear end face of the box body, with hydrophilic membranes at the upper and lower ends of the first notch. The sponge column is positioned within the inner cavity and abuts against the first notch. Water inlet and outlet holes 912 communicating with the inner cavity are provided on the front end face of the box body, lower than the lower end face of the first notch. A second rotating shaft 98 is located at the lower end of the wet kraft paper humidification channel inlet. The upper end of the heat-conducting support plate 93 is hung on the second rotating shaft along its inner side. A rearward hook-shaped structure forms a platform on the lower rear side of the heat-conducting support plate, with a heating element 95 inside the platform. A protective sheet is provided behind the heating element, and the front side of the heating element is connected to the heat-conducting support plate. The support plate is fitted together; a column 99 is provided on the outer side of the second rotating shaft, and a threaded pendant 94 is provided on the column; the pendant is pressed against the protective plate by its lower swing, so that the front side of the lower end of the heat-conducting support plate is further fitted with the sponge column at the first notch; a fourth guide roller shaft 96 is provided on the box at the lower end of the heat-conducting support plate; the inlet and outlet are both connected to water pumps. After the inlet pumps water from the water storage tank into the box, the outlet pumps out the liquid after detecting the liquid, keeping the liquid level in the box lower than the outlet, that is, lower than the lower end face of the first notch; one side of the sponge column 92 abuts against the first notch 911, and the other side of the sponge column 92 is fixed in the box by a fixing module. The fixing module has a circular concave side, and the other side of the sponge column 92 is fitted into the circular concave side. A second opening is opened on the side of the box, and the second opening is sealed by the cover. The fixing module can be removed through the second opening; the wet kraft paper humidification channel is straight, which is smoother than the existing curved type.

[0054] A wet kraft paper sealing machine includes a wet kraft paper humidification and heating device in the lower sealing unit, comprising a box body 91, a sponge column 92, a heat-conducting support plate 93, a pendant 94, a heating element 95, and a fourth guide roller 96. An extension is provided on the outer rear end of the box body, and a wet kraft paper humidification channel 97 with an outwardly expanding inlet is provided at the lower end of the extension. An inner cavity is provided inside the box body, and a first notch 911 is provided on the rear end face of the box body. The sponge column is disposed in the inner cavity and abuts against the first notch. Water inlet and outlet holes 912 communicating with the inner cavity are provided on the front end face of the box body, and the water inlet and outlet holes are lower than the first notch. The lower end face of the outlet; a fourth guide roller is provided at the outlet of the humidification channel of the wet kraft paper. The upper end of the heat-conducting support plate is hung on the fourth guide roller. The lower end of the heat-conducting support plate has a rearward hook-shaped structure to form a platform. A heating element 95 is provided in the platform. A protective sheet is provided behind the heating element. The front side of the heating element is attached to the heat-conducting support plate. One end of the column 99 passes through the upper end of the heat-conducting support plate. The end of the column is provided with a threaded pendant with an adjustable position. The pendant is pressed down on the protective sheet, so that the lower front side of the heat-conducting support plate is further attached to the sponge column at the first notch.

[0055] A wet kraft paper sealing machine has a carton sensor and a distance sensor located below the front end of the upper sealing device and the lower sealing device.

[0056] A wet kraft paper sealing machine is provided, wherein the wet kraft paper passes through a channel with an outward expansion structure 601; the outward expansion of the wet kraft paper humidification channel is an inverted 7-shaped structure 971, including an integrally formed horizontal section and a sloping section, the horizontal section being fixed to the inlet of the wet kraft paper humidification channel; a water-guiding perforation 972 is provided at the connection between the horizontal section and the sloping section; and a water baffle 602 is provided at the outlet of the wet kraft paper passage.

[0057] A wet kraft paper sealing machine includes a paper counting mechanism consisting of an encoding wheel assembly; a drive assembly consisting of a unidirectional drive assembly; an engagement hole 913 on the outer side of the upper sealing device's housing, with a corresponding mounting shaft 914 passing through a first housing and inserted into the engagement hole to fix the housing and the first housing; an engagement hole on the outer side of the lower sealing device's housing, with a corresponding mounting shaft passing through a second housing and inserted into the engagement hole to fix the housing and the second housing; a water pump on a water storage tank to deliver water into the housing; and paper pressing wheels 18 on the rear sides of the upper and lower sealing devices.

[0058] A wet kraft paper sealing machine includes a paper pressing guide assembly 7 comprising a cylinder assembly 71, a front paper pressing guide 72, and a rear paper pressing guide 73. The cylinder assembly is disposed within a first housing and a second housing. The drive shaft of the cylinder assembly is connected to the upper end of the rear paper pressing guide. The upper end of the rear paper pressing guide is also rotatably connected to one end of a connecting rod 74. The middle part of the rear paper pressing guide is rotatably connected to the first housing and the second housing. A rear paper pressing guide wheel 75 is provided at the lower part of the rear paper pressing guide. The upper end of the front paper pressing guide is rotatably connected to the first housing and the second housing. The middle part of the front paper pressing guide is rotatably connected to the other end of the connecting rod. A front paper pressing guide wheel 76 is provided at the lower part of the front paper pressing guide. The front paper pressing guide and the rear paper pressing guide are combined to form a figure-eight shape.

[0059] A wet kraft paper sealing machine, wherein the wet kraft paper end, the front pressure guide wheel and the rear pressure guide wheel of the lower sealing device pass through the gap in the roller layer.

[0060] A wet kraft paper sealing machine, wherein after the paper is fed by the paper feeding guide, the paper frame is restricted from rotating by the elasticity of the wet kraft paper.

[0061] A wet kraft paper sealing machine uses an electromagnetic drive unit to drive a pressure shaft at the lower end of the cover plate through a perforation to apply pressure to the wet kraft paper corresponding to the rotating shaft, thus allowing the wet kraft paper to move forward smoothly.

[0062] A wet kraft paper sealing machine, wherein a wet kraft paper humidification and heating device heats and humidifies the wet kraft paper to improve its adhesion and facilitate sealing.

[0063] A wet kraft paper sealing machine features a cylinder assembly for the paper pressing and guiding component, which ensures accurate positioning even after prolonged use.

[0064] A wet kraft paper sealing machine is provided, wherein the wet kraft paper humidification channel is equipped with water guiding perforations and water baffles to prevent the wet kraft paper in the pressure section from getting wet and causing paper jams.

[0065] A wet kraft paper sealing machine with easy disassembly of the box and accurate counting precision.

[0066] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A wet kraft paper sealing machine, comprising a frame (1), an adjustable-width box feeding mechanism (2), an upper sealing device (3), and a lower sealing device (4), wherein a roller layer (5) is provided on the frame, and an adjustable-width box feeding mechanism for conveying packaging boxes is provided on the roller layer; the upper sealing device is provided on a crossbeam (12) between lifting columns (11) on both sides of the upper end of the roller layer, for attaching wet kraft paper to the upper half of the packaging box; the lower sealing device is provided on the lower side of the roller layer, for attaching wet kraft paper to the lower half of the packaging box, and a notch (13) is provided on the roller layer corresponding to the lower sealing device; the upper sealing device and the lower sealing device are arranged opposite to each other, and cooperate with the adjustable-width box feeding mechanism to form a channel for the packaging box to pass through; characterized in that: Both the upper and lower sealing devices include a paper rack (14) and a paper pressing guide assembly (7). The paper rack is provided with a wet kraft paper roll (17). The wet kraft paper (15) is guided to the wet kraft paper humidification and heating device (9) through the paper feeding guide (8). After passing through the wet kraft paper humidification and heating device, it waits for the packaging box at the outlet of the upper and lower sealing devices. The wet kraft paper humidification and heating device is provided with a wet kraft paper pressing part (6) above the paper inlet. The two wet kraft paper humidification and heating devices are connected to the water storage tank (16) located on the lower end of the roller layer through pipes. The upper and lower sealing devices are provided with paper pressing guide assemblies (7) on the front and rear sides. The paper pressing guide assembly is located on the rear side of the corresponding wet kraft paper. The wet kraft paper pressing section (6) includes a pressing mounting frame (61), a third guide roller shaft (62), a rotating shaft (63), a drive assembly (64), a cover plate (65), a pressing shaft (66), a first mounting frame (67), a paper counting mechanism (68), and an electromagnetic drive unit (69). The upper end of the first mounting frame is provided with a pressing mounting frame, and the front of the first mounting frame is provided with a wet kraft paper passage (60). The front sides of the first mounting frame are provided with protruding mounting ears (671). The skirts on both sides of the middle part of the cover plate are rotatably connected to the opposite sides of the two mounting ears by a first rotating shaft (651) and a torsion spring (652) under normal pressure. The lower end of the cover plate is provided with a pressure shaft (66); the pressure mounting bracket is fixedly connected to the outer side of the two mounting ears on both sides, and the lower end of the middle part of the pressure mounting bracket is provided with an electromagnetic drive unit (69). The front of the first mounting bracket has a cutout (672) at the position of the pressure shaft corresponding to the passage of wet kraft paper. The back of the first mounting bracket is provided with a rotating shaft (63) corresponding to the cutout. One side of the rotating shaft is connected to a paper counting mechanism (68) for calculating the length of wet kraft paper, and the other side of the rotating shaft is connected to a drive assembly (64) through a pulley and belt. The electromagnetic drive unit drives the pressure shaft at the lower end of the cover plate to pass through the cutout and apply pressure to the wet kraft paper corresponding to the rotating shaft.

2. The wet kraft paper sealing machine according to claim 1, characterized in that: The upper sealing device includes a first outer shell (31), which is set on a crossbeam between two lifting columns. A first fixing plate (32) is set at the upper rear end of the first outer shell. The upper end of the first fixing plate is connected to the center of the paper rack through a shaft. A wet kraft paper roll is provided on the paper rack. The paper feeding guide (8) includes a conveying mounting plate (81), a second mounting frame (82), a first guide roller (83), and a second guide roller (84). Two symmetrical conveying mounting plates are provided on the first outer shell at the front end of the paper rack. A first guide roller is provided between the upper front ends of the two conveying mounting plates. The lower rear ends of the two conveying mounting plates are connected to the corresponding rotating shaft at the lower end of the second mounting frame. A second guide roller is provided at the upper end of the second mounting frame. A wet kraft paper pressing part is provided on the first outer shell at the front end of the paper feeding guide. A wet kraft paper humidification and heating device is provided inside the first outer shell at the lower end of the wet kraft paper pressing part. A paper pressing guide assembly is provided inside the first outer shell at the rear end of the wet kraft paper humidification and heating device. The lower sealing device includes a second outer shell (41), which is located inside the notch of the roller layer. The lower sides of the front and rear ends of the second outer shell are set on two fixed frames at the lower end of the roller layer. A second fixed plate (42) is set at the lower rear end of the second outer shell. The upper end of the second fixed plate is connected to the center of the paper rack via a shaft. The paper rack is provided with a roll of wet kraft paper. The paper feeding guide includes a conveying mounting plate, a second mounting frame, a first guide roller, and a second guide roller. The lower end of the second outer shell at the front end of the paper rack is provided with two symmetrical conveying mounting plates. A first guide roller is provided between the lower sides of the front ends of the two conveying mounting plates. The upper sides of the rear ends of the two conveying mounting plates are connected to the corresponding rotating shafts at the upper end of the second mounting frame. The lower end of the second mounting frame is provided with a second guide roller. The second outer shell at the front end of the paper feeding guide is provided with a wet kraft paper pressing part. The second outer shell at the upper end of the wet kraft paper pressing part is provided with a wet kraft paper humidification and heating device. A paper pressing guide assembly is provided at the rear end of the wet kraft paper humidification and heating device inside the second outer shell.

3. The wet kraft paper sealing machine according to claim 2, characterized in that: The side wall of the second mounting bracket is provided with a brake pad (85) corresponding to the side wall of the paper holder. When the second mounting bracket returns to its original position, the brake pad contacts the side wall of the paper holder.

4. A wet kraft paper sealing machine according to claim 3, characterized in that: The wet kraft paper humidification and heating device (9) includes a box (91), a sponge column (92), a heat-conducting support plate (93), a pendant (94), a heating element (95), and a fourth guide roller (96). An extension is provided on the outer side of the rear end of the box. The upper end of the extension is provided with a wet kraft paper humidification channel (97) with an outwardly expanding inlet. An inner cavity is provided inside the box. A first notch (911) is provided on the rear end face of the box. The sponge column (92) is placed in the inner cavity and abuts against the first notch. A water inlet and outlet hole (912) communicating with the inner cavity is provided on the front end face of the box. The water inlet and outlet hole is lower than the lower end face of the first notch. A second rotating shaft (98) is provided at the lower end of the humidification channel entrance of the wet kraft paper. The upper end of the heat-conducting support plate (93) is hung on the second rotating shaft along the inner side of the second rotating shaft. A hook-shaped structure facing backward is provided on the lower rear side of the heat-conducting support plate to form a platform. A heating element (95) is provided in the platform. A protective sheet is provided on the rear side of the heating element. The front side of the heating element is in contact with the heat-conducting support plate. A column (99) is provided on the outer side of the second rotating shaft. A pendant (94) with adjustable position is provided on the column. The pendant is pressed down on the protective sheet, so that the front side of the lower end of the heat-conducting support plate is further in contact with the sponge column at the first notch. A fourth guide roller shaft (96) is provided on the box at the lower end of the heat-conducting support plate.

5. A wet kraft paper sealing machine according to claim 4, characterized in that: Carton sensors and distance sensors are located at the lower front end of the upper and lower sealing devices.

6. A wet kraft paper sealing machine according to claim 5, characterized in that: The wet kraft paper has an outward expansion structure (601) at the entrance of the channel; the outward expansion of the wet kraft paper humidification channel is an inverted 7-shaped structure (971), including an integrally formed horizontal section and a sloping section, the horizontal section being fixed to the entrance of the wet kraft paper humidification channel; a water-guiding perforation (972) is provided at the connection between the horizontal section and the sloping section; a water baffle (602) is provided at the exit of the wet kraft paper channel.

7. A wet kraft paper sealing machine according to claim 6, characterized in that: The paper counting mechanism is an encoding wheel assembly; the drive assembly is a one-way drive assembly; the outer side of the upper sealing device is provided with a locking hole (913), and the corresponding mounting shaft (914) passes through the first housing and is inserted into the locking hole to fix the housing and the first housing; the outer side of the lower sealing device is provided with a locking hole, and the corresponding mounting shaft passes through the second housing and is inserted into the locking hole to fix the housing and the second housing; a water pump is provided on the water storage tank to transport water into the housing; the rear side of the upper sealing device and the lower sealing device is also provided with a paper pressing wheel (18).

8. A wet kraft paper sealing machine according to claim 7, characterized in that: The paper pressing guide assembly (7) includes a cylinder assembly (71), a front paper pressing guide (72), and a rear paper pressing guide (73). The cylinder assembly is located inside the first housing and the second housing. The drive shaft of the cylinder assembly is connected to the upper end of the rear paper pressing guide. The upper end of the rear paper pressing guide is also rotatably connected to one end of a connecting rod (74). The middle part of the rear paper pressing guide is rotatably connected to the first housing and the second housing. The lower part of the rear paper pressing guide is provided with a rear paper pressing guide wheel (75). The upper end of the front paper pressing guide is rotatably connected to the first housing and the second housing. The middle part of the front paper pressing guide is rotatably connected to the other end of the connecting rod. The lower part of the front paper pressing guide is provided with a front paper pressing guide wheel (76). The front paper pressing guide and the rear paper pressing guide are combined to form a figure-eight shape.

9. A wet kraft paper sealing machine according to claim 8, characterized in that: The wet kraft paper end, the front pressure guide roller and the rear pressure guide roller of the lower sealing device pass through the gap in the roller layer.

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