Water circulation system of wet kraft paper sealing machine
By designing a water circulation system for the wet kraft paper sealing machine, the problems of complex humidification structure and water tank leakage were solved, realizing the heating and humidification of environmentally friendly and biodegradable sealing materials, and improving the operational stability and service life of the sealing machine.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG DINGYE MACHINERY
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-31
AI Technical Summary
The existing wet kraft paper sealing machine has a complex humidification structure, which makes it easy to add water frequently and has poor contact. The water storage tank is located at the top, which makes it easy to leak and spill water, causing paper jams.
A water circulation system for a wet kraft paper sealing machine was designed, including a box body, a water storage tank, and a sponge column. The water storage tank is connected through water inlet and outlet holes. The structure of the sponge column and the heat-conducting support plate heating element is used. The humidification channel of the wet kraft paper is inverted 7-shaped, with water guide perforations and water baffles. The water storage tank is located at the lower end of the frame, and a water pump is used to maintain a stable liquid level.
It achieves environmentally friendly and biodegradable wet kraft paper, convenient heating and humidification of sealing materials to avoid paper jams, easy installation and replacement of water storage tanks, long service life, and avoids water leakage at the top of the water storage tank.
Smart Images

Figure CN224576937U_ABST
Abstract
Description
Technical Field
[0001] This utility model patent relates to the field of packaging box sealing technology, and in particular to the water circulation system of 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 erectors and carton packers. It uses BOPP (Bottle-Off-Plate) adhesive tape (sealing tape) to seal cartons, and can seal both the top and bottom sides of the carton simultaneously. It features fast packaging speed, high efficiency, and aesthetically pleasing appearance. When using a carton sealing machine, the conveyor belt first clamps the carton, then the height measuring roller measures the height of the carton, adjusts the height of the sealing mechanism, and finally seals the carton with tape.
[0003] The existing wet kraft paper sealing machine has a complex humidification structure, which is prone to frequent water addition and poor contact; the water storage tank is located at the top of the upper sealing device, which is prone to water leakage and spillage. Utility Model Content
[0004] The purpose of this utility model is to solve the existing technical problems by proposing a water circulation system for a wet kraft paper sealing machine.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a water circulation system for a wet kraft paper sealing machine, comprising a box body, a water storage tank, and a sponge column. An extension is provided on the outer side of the rear end of the box body, and the extension is provided with a wet kraft paper humidification channel with an outwardly expanding inlet. An inner cavity is provided inside the box body, and a first notch is provided on the rear end face of the box body, corresponding to the wet kraft paper humidification channel. The sponge column is placed in the inner cavity and abuts against the first notch. An inlet and outlet water hole is provided on the front end face of the box body, which connects to the inner cavity. The inlet and outlet water hole is connected to the water storage tank through a pipe.
[0006] Furthermore, the inlet and outlet holes are lower than the lower end face of the first notch.
[0007] Furthermore, a second rotating shaft is provided below the humidification channel entrance of the wet kraft paper. The upper end of the heat-conducting support plate 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 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 attached to the heat-conducting support plate.
[0008] Furthermore, a column is provided on the outer side of the second rotating shaft, and a threaded 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 attached to the sponge column at the first notch, and a guide roller shaft is provided on the box at the lower end of the wet kraft paper humidification channel.
[0009] Furthermore, the humidification channel of the wet kraft paper has an outward expansion shape in the shape of an inverted 7, including an integrally formed horizontal section and a sloping section. The horizontal section is fixed to the inlet 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 lower end of the water-guiding perforation.
[0010] Furthermore, a water pump is installed on the water storage tank to deliver water into the tank.
[0011] Furthermore, the lower end of the extension is provided with a humidification channel for wet kraft paper with an outward-expanding inlet. A guide roller is located at the outlet of the humidification channel for wet kraft paper. The upper end of the heat-conducting support plate is hung on the guide roller. The lower rear side of the heat-conducting support plate is provided with a rearward-facing hook-shaped structure to form a platform. A heating element is provided inside 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 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 front side of the lower end of the heat-conducting support plate is further attached to the sponge column at the first notch.
[0012] The beneficial effects of this utility model are: using wet kraft paper as the sealing material, the material is environmentally friendly and biodegradable; heating and humidifying the wet kraft paper facilitates sealing; the water-guiding perforations and baffles on the humidification channel of the wet kraft paper prevent unused wet kraft paper from getting wet and causing paper jams; the water storage tank is located at the bottom of the frame, making installation and replacement convenient, and it has a long service life and large capacity, avoiding the problem of water leakage and paper jams that occurs when replacing and adding water in existing products where the tank is located at the top of the frame. Attached Figure Description
[0013] Figure 1 Example 1: Schematic diagram of the structure of this patent Figure 1 .
[0014] Figure 2 Example 1: Schematic diagram of the structure of this patent Figure 2 .
[0015] Figure 3 This is a cross-sectional view of this patent for Example 1.
[0016] Figure 4 Example 2: Schematic diagram of the structure of this patent Figure 1 .
[0017] Figure 5 Example 2: Schematic diagram of the structure of this patent Figure 2 .
[0018] Figure 6 This is a cross-sectional view of this patent for Example 2.
[0019] 1 is the housing; 2 is the baffle plate; 3 is the extension section; 4 is the sponge column; 5 is the wet kraft paper humidification channel; 6 is the inner cavity; 7 is the first notch; 8 is the water inlet and outlet holes; 9 is the second rotating shaft; 10 is the heat-conducting support plate; 11 is the shelf; 12 is the heating element; 13 is the column; 14 is the pendant; 15 is the guide roller shaft; 16 is the inverted 7-shaped structure; 17 is the water-guiding perforation. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0021] Example 1 combined with appendix Figure 1-3 The water circulation system of the wet kraft paper sealing machine includes a box body 1, a water storage tank and a sponge column 4. An extension part 3 is provided on the outer side of the rear end of the box body. The extension part is provided with a wet kraft paper humidification channel 5 with an outwardly expanding inlet. An inner cavity 6 for storing water is provided inside the box body. A first notch 7 is provided on the rear end face of the box body. The first notch corresponds to the wet kraft paper humidification channel. The sponge column is set in the inner cavity and abuts against the first notch. A water inlet and outlet hole 8 is provided on the front end face of the box body, which is connected to the water storage tank through a pipe. The inlet and outlet are both connected to a water pump. The inlet pumps water from the storage tank into the tank, and the outlet pumps out the liquid after detecting the liquid, keeping the liquid level in the tank lower than the outlet, i.e. lower than the lower end face of the first notch. One side of the sponge column rests against the first notch, and the other side of the sponge column is fixed in the tank by a fixing module. The fixing module has a circular recess on the corresponding side, and the other side of the sponge column is fitted into the circular recess. A second opening is opened on the side of the tank, and the second opening is sealed by the cover. The fixing module can be removed through the second opening.
[0022] The water circulation system of the wet kraft paper sealing machine has water inlet and outlet holes lower than the lower end face of the first notch.
[0023] The water circulation system of the wet kraft paper sealing machine has the wet kraft paper humidification channel inlet located at the top. A second rotating shaft 9 is located below the wet kraft paper humidification channel inlet. The upper end of a heat-conducting support plate 10 hangs on the inner side of the second rotating shaft. A hook-shaped structure forming a platform 11 is located on the rear side of the lower end of the heat-conducting support plate. A heating element 12 is located inside the platform, with a protective sheet behind the heating element. The front side of the heating element is in contact with the heat-conducting support plate. A column 13 is located outside the second rotating shaft, with a threaded, adjustable pendant 14 on the column. The pendant presses down on the protective sheet, further bringing the front side of the lower end of the heat-conducting support plate into contact with the sponge column at the first notch. A guide roller shaft 15 is located on the lower end of the wet kraft paper humidification channel. The wet kraft paper humidification channel is straight, which is smoother to operate than the existing curved type.
[0024] The water circulation system of the wet kraft paper sealing machine has an inverted 7-shaped structure 16 for the humidification channel of the wet kraft paper, which includes an integrally formed horizontal section and a sloping section. The horizontal section is fixed to the inlet of the wet kraft paper humidification channel. A water-guiding perforation 17 is provided at the connection between the horizontal section and the sloping section.
[0025] The water circulation system of the wet kraft paper sealing machine has a water pump on the water storage tank to deliver water into the box.
[0026] The water circulation system of the wet kraft paper sealing machine has hydrophilic membranes on the upper and lower sides of the first notch.
[0027] Example 2 combined with appendix Figure 4-6 The water circulation system of the wet kraft paper sealing machine includes a box body 1, a water storage tank 2, and a sponge column 4. An extension is provided on the outer side of the rear end of the box body. The extension has a wet kraft paper humidification channel 5 with an outwardly expanding inlet. An inner cavity 6 is provided inside the box body. A first notch 7 is provided on the rear end face of the box body. The first notch corresponds to the wet kraft paper humidification channel. The sponge column is placed in the inner cavity and abuts against the first notch. An inlet and outlet water hole 8 is provided on the front end face of the box body, which is connected to the water storage tank through a pipe.
[0028] The water circulation system of the wet kraft paper sealing machine has water inlet and outlet holes lower than the lower end face of the first notch.
[0029] The water circulation system of the wet kraft paper sealing machine has two water inlets and outlets, both connected to water pumps. The inlet pumps water from the storage tank into the box, and the outlet, upon detecting the liquid, pumps it out, maintaining the liquid level inside the box below the outlet, i.e., below the lower end face of the first notch. One side of the sponge column rests against the first notch, and the other side is fixed to the box by a fixing module. The fixing module has a circular recess on its corresponding side, and the other side of the sponge column fits into this recess. A second opening is opened on the side of the box, sealed by a cover. The fixing module is removed through this second opening. The water circulation system of the wet kraft paper sealing machine has the wet kraft paper humidification channel inlet located at the bottom; the lower end of the extension is provided with a wet kraft paper humidification channel 5 with an outwardly expanding inlet, and a guide roller shaft 15 is provided below the outlet of the wet kraft paper humidification channel. The upper end of the heat-conducting support plate 10 is hung on the guide roller shaft, and the lower rear side of the heat-conducting support plate is provided with a rearward hook-shaped structure to form a platform 11. A heating element 12 is provided in the platform, and 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 13 passes through the upper end of the heat-conducting support plate, and the end of the column is provided with a threaded adjustable pendant 14; 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.
[0030] The water circulation system of the wet kraft paper sealing machine has an outwardly expanding wet kraft paper humidification channel with an inverted "7" shape 16, including an integrally formed horizontal section and a sloping section. The horizontal section is fixed to the inlet of the wet kraft paper humidification channel. A water-guiding perforation 17 is provided at the connection between the horizontal section and the sloping section. A water baffle 2 is provided at the lower end of the water-guiding perforation. The wet kraft paper humidification channel is straight, which makes its operation smoother than the existing curved type. The water circulation system of the wet kraft paper sealing machine has a water pump on the water storage tank to deliver water into the box.
[0031] The water circulation system of the wet kraft paper sealing machine has hydrophilic membranes on the upper and lower sides of the first notch.
[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A water circulation system of a wet buffalo paper box sealing machine, comprising a box body, a water storage tank and a sponge column; characterized in that: An extension is provided on the outer rear end of the box, and the extension has a wet kraft paper humidification channel with an outwardly expanding inlet. The box has an inner cavity, and a first notch is provided on the rear end face of the box, which corresponds to the wet kraft paper humidification channel. A sponge column is placed in the inner cavity and abuts against the first notch. The front end face of the box has water inlet and outlet holes that connect to the inner cavity, and the water inlet and outlet holes are connected to a water storage tank through pipes.
2. The water recycling system of a wet buffalo paper case sealing machine according to claim 1, characterized by: The inlet and outlet holes are lower than the lower end face of the first notch.
3. The water recycling system of a wet buffalo paper case sealing machine according to claim 1, characterized by: A second rotating shaft is located at the entrance of the humidification channel of the wet kraft paper. The upper end of the heat-conducting support plate is hung on the second rotating shaft along 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 installed in the platform. A protective sheet is installed behind the heating element. The front side of the heating element is attached to the heat-conducting support plate.
4. The water recycling system of a wet buffalo paper case sealing machine according to claim 3, characterized by: A column is provided on the outer side of the second rotating shaft, and a threaded pendant with an adjustable position is provided on the column. The pendant is pressed against the protective sheet by its lower swing, so that the front side of the lower end of the heat-conducting support plate is further attached to the sponge column at the first notch. A guide roller shaft is provided on the box at the lower end of the wet kraft paper humidification channel.
5. The water recycling system of a wet buffalo paper case sealing machine according to claim 4, characterized by: The wet kraft paper humidification channel has an outward expansion in the shape of an inverted 7-shape, including an integrally formed horizontal section and a sloping section. The horizontal section is fixed to the inlet of the wet kraft paper humidification channel; a water-guiding perforation is provided at the connection between the horizontal section and the sloping section.
6. The water recycling system of a wet buffalo paper case sealing machine according to claim 1, characterized by: The water storage tank is equipped with a water pump to deliver water into the tank.
7. The water recycling system of a wet buffalo paper case sealing machine according to claim 1, characterized by: The lower end of the extension section is provided with a humidification channel for wet kraft paper with an outward-expanding inlet. A guide roller is located at the outlet of the humidification channel. The upper end of the heat-conducting support plate is hung on the guide roller. The lower rear side of the heat-conducting support plate is provided with a rearward-facing hook-shaped structure to form a platform. A heating element is provided inside the platform, and 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 passes through the upper end of the heat-conducting support plate, and 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.