Paper tray forming integrated device and forming process

Abstract

The application provides a paper tray forming integrated equipment and a forming process, and belongs to the field of paper tray forming. The equipment comprises a support frame, a walking mechanism, a pulp supply tank, an upper mold assembly, a lower mold assembly and a drying mechanism. The walking mechanism is fixed to the support frame. The pulp supply tank has multiple cavities, and the cavities are filled with slurry. The upper mold assembly is suspended on the walking mechanism, and a first driving end is arranged at the suspension position, so that the upper mold assembly can move towards or away from the pulp supply tank. The upper mold assembly is provided with a paper tray upper mold, and the paper tray upper mold corresponds to the cavities. The lower mold assembly is arranged opposite to the upper mold assembly and is arranged in the pulp supply tank. The lower mold assembly is provided with a paper tray lower mold at the end opposite to the paper tray upper mold, and a second driving end is arranged at the paper tray lower mold. The second driving end can move the paper tray lower mold towards the paper tray upper mold. The drying mechanism is adjacent to the pulp supply tank. The paper tray forming process is to produce the paper tray by using the above equipment. The application aims to solve the problem of low production efficiency in the prior art.

Description

Technical Field

[0001] This invention belongs to the field of paper tray forming technology, and more specifically, relates to an integrated paper tray forming device. This invention also relates to a paper tray forming process. Background Technology

[0002] Paperboard forming technology is a method for producing paper packaging and support products. It uses molds and pressure to mold pulp or paperboard under high temperature and humidity conditions, forming products of various shapes and sizes, such as thin-walled boxes, packaging boxes, and pallets. This technology enables efficient and environmentally friendly production because its raw materials are readily available and recyclable. With increasing environmental awareness and technological advancements, paperboard forming technology is being used more and more widely in the packaging industry, becoming one of the important alternatives to traditional plastic packaging.

[0003] In existing technologies, the equipment commonly used in the production of paper trays includes: pulp supply equipment, forming equipment, drying equipment, and receiving equipment. The main process is as follows: Operators first pour pulp from the pulp supply equipment into the lower mold of the forming equipment. After the lower mold is completely filled, the upper mold is merged into the lower mold using the control terminal of the forming equipment. Then, after a period of settling to allow the pulp to solidify into paper trays, a robotic arm transports the formed paper trays to the drying equipment for drying. Finally, the robotic arm stacks the final products onto the receiving equipment.

[0004] The entire process described above can be summarized as pulp supply—heating and molding of the paper tray—drying of the paper tray—receiving of the paper tray. Because this entire process operates on an assembly line basis, the existing equipment can only mold one type of paper tray at a time, failing to meet the need for molding paper trays of different shapes in one operation (i.e., it cannot mold multiple shapes of pulp at once). Furthermore, due to the assembly line operation, only paper trays can be dried individually; it is not possible to dry multiple paper trays simultaneously, thus hindering overall production efficiency. Summary of the Invention

[0005] The main purpose of this application is to provide an integrated paper tray forming device that integrates the forming mechanism and the drying mechanism, which can meet the needs of forming paper trays of different shapes in one step, and can simultaneously dry multiple paper trays, thereby improving the overall production efficiency.

[0006] Another objective of this application is to provide a paper tray forming process that aims to solve the problem of low production efficiency in the prior art.

[0007] To achieve the above objectives, this application proposes an integrated paper tray forming device, comprising: Support frame; The traveling mechanism, fixed to the support frame, is used for lateral movement; The pulp supply box has multiple chambers, each filled with the same or different types of pulp. The upper mold assembly is suspended on the traveling mechanism and can move laterally with the traveling mechanism. The upper mold assembly is provided with a first driving end at the suspension point, which can drive the upper mold assembly to move toward or away from the pulp supply box. The upper mold assembly is provided with a paper tray upper mold at one end relative to the suspension point. The paper tray upper mold corresponds to the chamber, and adjacent paper tray upper molds are of the same or different structures. The lower mold assembly is arranged opposite to the upper mold assembly and placed inside the pulp supply box. The lower mold assembly has a lower mold for the paper tray at one end opposite to the upper mold for the paper tray, and a second driving end at one end near the pulp supply box. The second driving end can drive the lower mold for the paper tray to move toward the upper mold for the paper tray. The drying mechanism is arranged adjacent to the pulp supply box and has a drying window. The traveling mechanism can drive the upper die assembly to move to the drying window of the drying mechanism.

[0008] Furthermore, the upper and lower molds of the paper tray are provided with a blow-suction assembly at opposite ends for adsorbing or blowing away the paper tray; The blowing-suction assembly includes an air pipe and an air pump. Both the upper and lower molds of the paper tray are provided with air holes. The air pipe is placed inside the air holes. The air pipe is connected to the air pump pipeline, and the air pump is connected to an external power source.

[0009] This solution provides a mechanism for fixing and limiting the paper tray. When the lower mold of the paper tray is raised, the slurry inside the lower mold is allowed to settle and solidify. At this time, air needs to be drawn into the air hole of the lower mold to generate negative pressure. The negative pressure can adsorb the relatively moist paper tray product after solidification onto the lower mold. Then, the lower mold and the upper mold are driven to move closer and squeeze together, finally forming a complete paper tray product. At this time, air is blown into the air hole of the lower mold and air is drawn into the upper mold. The paper tray product will be directly adsorbed from the groove of the lower mold onto the protrusion of the upper mold. Then, the traveling mechanism can be used to drive the paper tray product into the final drying process.

[0010] Furthermore, a heating element is provided at one opposite end of the upper and lower molds of the paper tray for heating the upper and lower molds of the paper tray, and the heating element is electrically connected to an external power source.

[0011] The heating element can convert electrical energy into heat energy through an external power source, supplying the upper and lower molds of the paper tray to heat and solidify the relatively moist and unformed paper tray products in advance, thus shortening the overall settling time.

[0012] Furthermore, the upper mold assembly includes: A connector, one end of which is fixedly connected to the first driving end; Several support members are circumferentially fixed to the connectors, and each support member corresponds to one of the chambers. The mold on the paper tray is fixed to the support member.

[0013] The main function of the connector is to connect the first drive end and the support component, and to firmly fix the mold on the paper tray; while the support component is to provide support for the mold on the paper tray and increase the stability of the mold on the paper tray when it rises or falls.

[0014] Furthermore, the first drive end and the second drive end are one of an electric lifting assembly, a pneumatic lifting assembly, and a hydraulic lifting assembly.

[0015] This solution employs multiple drive methods, including electric lifting, pneumatic lifting, and hydraulic lifting, allowing for adjustments based on customer needs and specific on-site conditions to enhance the equipment's practicality.

[0016] Furthermore, the drying mechanism includes: The housing has an opening at one end facing the traveling mechanism, which is a drying window. A partition is provided inside the housing at the end opposite to the drying window, which divides the internal space of the housing into a heating area and a non-heating area. A heating element is fixedly connected to the non-heated area and extends into the heated area to provide a heat source; A vortex heating element is sleeved on the heating assembly and rotatably connected to the partition plate. The upper mold assembly can enter the vortex heating element and can move up and down along the axial direction of the vortex heating element. When the heating component is activated, the eddy current heating element generates eddy current concentrated hot air to dry the paper tray of the upper mold component.

[0017] To further shorten drying time and improve drying efficiency, the vortex heating element rotates inside the housing. As the heating components generate a large amount of heat, the hot air rises accordingly. During the rise of the hot air, the rotating vortex heating element generates vortex-concentrated hot air, which directly acts on the paper tray products on the mold. The vortex hot air along one direction can evenly heat the paper tray products, preventing uneven heating that could result in some parts of the paper tray not being dry, and shortening the drying time, thus improving overall production efficiency.

[0018] Furthermore, the heating assembly includes: A sealed box is fixed in a non-heated area, and an electric heating element is installed inside the sealed box. The electric heating element is electrically connected to an external power source. A heat dissipation pipe is mounted on a sealed box and fixedly connected to an electric heating element, extending to the heating area.

[0019] Furthermore, the eddy current heat-concentrating element includes: The first drive motor is fixed in the non-heated area, and the output shaft of the first drive motor is fixedly connected to a worm gear; A rotating assembly has a gear ring fixedly fitted on its outer surface, and the rotating assembly rotates relative to the gear ring and the partition, with the worm gear meshing with the gear ring. The inner surface of the rotating kit is fixedly connected with several guide ribs, the upper mold assembly can be raised and lowered within the rotating kit, and a gap is reserved between the guide ribs and the upper mold assembly.

[0020] In this scheme, the first drive motor drives the worm gear to rotate, the rotating worm gear drives the gear ring to rotate, thereby driving the rotating assembly to rotate. At this time, the guide rib plate moves the hot air, allowing the hot air to rotate clockwise or counterclockwise in the rotating assembly, thereby generating vortex energy-concentrating hot air.

[0021] Furthermore, the traveling mechanism includes: The second drive motor is fixed on the support frame; A drive screw, one end of which is fixedly connected to the output end of a second drive motor; A sliding block is mounted on the drive screw and can reciprocate along the length of the drive screw. The first drive end is suspended on the sliding block.

[0022] In this scheme, the second drive motor drives the drive screw to rotate, thereby driving the sliding block to move laterally. Assuming that when the second drive motor rotates forward, the drive screw rotates clockwise, and the sliding block moves away from the drying mechanism; then when the second drive motor rotates in reverse, the drive screw rotates counterclockwise, and the sliding block moves towards the drying mechanism.

[0023] In this design, the partition can be equipped with multiple drop holes, allowing paper tray debris that falls during the drying process to directly enter the non-heated area through the drop holes. As the sludge collection pump operates, it can suck the paper tray debris into the sludge collection chamber, preventing the paper tray debris from being ignited due to heat when the heating area is continuously heated later, thus improving the overall safety performance of the machine.

[0024] A paper tray forming process, utilizing the aforementioned integrated paper tray forming equipment for paper tray production, the process comprising: Prepare the slurry; The prepared pulp is injected into each chamber of the pulp supply box through the infusion tube until it submerges the mold under the paper tray; Start the second drive end to make the lower mold of the paper tray extend out of the liquid surface of the slurry, and after standing for T1 time, continue to drive the lower mold of the paper tray to rise until it merges with the upper mold of the paper tray. At this time, after standing for T2 time, start the second drive end in reverse to separate the lower mold of the paper tray from the upper mold of the paper tray, and then turn off the second drive end. Start the first drive end until the mold on the paper tray rises to the limit point, then stop the first drive end; Start the traveling mechanism to move the mold on the paper tray toward the drying mechanism until the mold on the paper tray moves to the position on the drying mechanism opposite to the drying window, then stop the traveling mechanism. Start the first drive end until the mold on the paper tray descends into the drying window, then turn off the first drive end and start the drying mechanism to dry the paper tray on the mold on the paper tray. The drying time is T3, where the relationship between T1, T2, and T3 is: 0 < T2 ≤ T1 = T3.

[0025] The paper tray forming integrated device proposed in this invention has the following beneficial effects: (1) The present invention provides a chamber for accommodating different types of pulp slurry. Each chamber has a corresponding lower mold for paper trays. Each lower mold can be different depending on the shape of the paper tray, or all lower molds can be the same. In this case, multiple paper tray products of the same type or multiple paper tray products of different types can be formed at one time. The process can be carried out by changing the lower mold and the corresponding upper mold of the paper tray according to actual production needs, so as to meet the needs of producing paper trays of different shapes in one time, or to meet the needs of producing paper trays of the same shape in one time.

[0026] (2) By using the present invention, the traveling mechanism drives the upper mold assembly into the drying window of the drying mechanism. At this time, the upper mold assembly can drive multiple paper tray molds into the drying window, and the drying mechanism can dry the paper trays on multiple paper tray molds at one time, thereby improving the overall production efficiency.

[0027] The present invention also proposes a paper tray forming process, which aims to produce paper tray products using the aforementioned integrated paper tray forming equipment, and has the following beneficial effects: The paper tray forming process (method) provided by this invention shortens the settling time of the lower paper tray mold, the combined settling time of the lower paper tray mold and the upper paper tray mold, and also shortens the drying time of the drying mechanism. Assuming the settling time of the lower paper tray mold is T1, the settling time of the combined settling time of the lower paper tray mold and the upper paper tray mold is T2, and the drying time is T3, this method can make the relationship between T1, T2, and T3 as: 0 < T2 ≤ T1 = T3. This allows the formed paper tray to be dried quickly while shortening the overall drying time, thereby improving the production efficiency of the entire paper tray product. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of a paper tray forming integrated device according to the present invention; Figure 2 This is a schematic diagram showing the positional relationship between the pulp supply box and the mold on the paper tray in this invention; Figure 3 This is a schematic diagram showing the positional relationship between the pulp supply box and the lower mold of the paper tray in this invention; Figure 4 This is an exploded structural diagram of the drying mechanism of the present invention; Figure 5 This is a schematic diagram of the heating assembly of the present invention; Figure 6 This is a schematic diagram of the traveling mechanism of the present invention.

[0029] In the diagram, 1. Support frame, 11. Fixed plate, 2. Traveling mechanism, 21. Second drive motor, 22. Drive screw, 23. Sliding block, 24. Protective shell, 3. Pulp supply box, 31. Chamber, 4. Upper mold assembly, 41. Connector, 42. Upper mold of paper tray, 5. First drive end, 6. Lower mold of paper tray, 61. Paper tray groove, 7. Drying mechanism, 71. Drying window, 72. Shell, 73. Partition, 731. Round hole, 74. Heating assembly, 741. Sealing box, 742. Heat dissipation pipe, 743. Heat dissipation fin, 75. Vortex heat gathering component, 751. First drive motor, 752. Rotating assembly, 7521. Guide rib plate, 753. Gear ring, 754. Worm gear, 755. Bearing ring, 8. Crushing tube, 9. Support platform, 10. Through channel. Detailed Implementation

[0030] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0031] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. This disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0032] Example Existing equipment can only mold one type of paper tray at a time, which cannot meet the need for molding paper trays of different shapes in one go (i.e., it cannot mold multiple shapes of pulp at once). In addition, due to the assembly line operation mode, paper trays can only be dried one by one, and multiple paper trays cannot be dried at the same time, which cannot improve the overall production efficiency.

[0033] Based on this, in order to meet the need for one-time molding of paper trays of different shapes, this embodiment provides an integrated paper tray molding device, see reference. Figure 1 The system includes: a support frame 1, a traveling mechanism 2, a pulp supply box 3, an upper mold assembly 4, a lower mold assembly, and a drying mechanism 7. The support frame 1 is a steel frame structure, with a fixing plate 11 mounted on top. A portion of the traveling mechanism 2 is directly fixed to the fixing plate 11 by bolts or other fasteners. The other portion of the traveling mechanism 2 extends towards the pulp supply box 3, and both ends of the extended portion are reinforced with reinforcing ribs. The pulp supply box 3 is an open structure, with multiple partition plates dividing its interior into multiple chambers 31, each filled with a different type of pulp. The upper mold assembly 4 is suspended from the traveling mechanism 2 and can move laterally with it. A first drive end 5 is fixedly connected to the suspension point of the upper mold assembly 4, driving the upper mold assembly 4 to move towards or away from the pulp supply box 3. The upper mold assembly 4 is detachably mounted at one end relative to the suspension point. Figure 2 The upper mold 42 shown corresponds to the chamber 31, meaning each upper mold 42 has a different shape. The lower mold assembly is positioned opposite the upper mold assembly 4 and placed inside the pulp supply box 3. The end of the lower mold assembly opposite the upper mold 42 is detachably mounted as follows: Figure 3 The paper tray lower mold 6 shown has a second driving end near the pulp supply box 3, which drives the paper tray lower mold 6 to move toward the paper tray upper mold 42. The detachable connection can be a threaded connection, a snap-fit ​​connection, or a pin connection; in this embodiment, the appropriate detachment method can be selected based on the actual working conditions. The drying mechanism 7 is adjacent to the pulp supply box 3 and has an open design with a drying window 71. The traveling mechanism 2 drives the upper mold assembly 4 to move to the drying window 71 of the drying mechanism 7. In this design, the paper tray upper mold 42 and the corresponding paper tray lower mold 6 can be merged. Specifically, a paper tray groove 61 is provided at the end of the paper tray lower mold 6 facing the paper tray upper mold 42. The paper tray grooves 61 of each paper tray lower mold 6 are different, used to produce different types of paper trays. The upper mold 42 of the paper tray has a paper tray protrusion. When the upper mold 42 of the paper tray and the lower mold 6 of the paper tray come close to each other, the paper tray product can be extruded. Since the extruded paper tray product is not completely dry, it needs to be placed in the drying mechanism 7 to dry it as a whole.

[0034] The first drive end 5 and the second drive end are one of three types: electric lifting assembly, pneumatic lifting assembly, and hydraulic lifting assembly. This solution employs multiple drive methods, including electric, pneumatic, and hydraulic lifting drives, allowing for adjustments based on customer needs and specific site conditions to enhance the equipment's practicality. Specifically, the electric lifting assembly can be an electric lifting rod, a device that achieves lifting functionality through an electric drive system. It typically uses a DC motor as the drive source, with the motor rotating via power supply. The key component in the electric lifting rod's internal structure is the screw mechanism. This mechanism consists of a screw and a nut; the motor's rotation is transmitted to the screw via a transmission device, causing the nut to move on the screw. Due to the screw's threaded structure, this movement is linear, enabling the screw mechanism to achieve smooth and reliable lifting. The pneumatic lifting assembly is a device that uses gas pressure to achieve lifting. It typically consists of a pneumatic cylinder, a pneumatic control valve, and an air source. The pneumatic cylinder is its core component. It receives compressed air from an air source and drives the piston inside the cylinder to achieve linear lifting and lowering movements. The pneumatic control valve regulates the air supply and exhaust, controlling the speed and direction of the pneumatic cylinder's movement by controlling the valve's opening and closing. The air source provides compressed air, typically from an air compressor or gas cylinder. The hydraulic lifting assembly is a device that uses liquid pressure to transmit force, thereby achieving lifting and lowering movements. It mainly consists of a hydraulic cylinder, a hydraulic pump, a hydraulic control valve, and an oil source. The hydraulic cylinder is the core component; it uses the pressure generated by the liquid (usually oil) inside the cylinder to drive the piston's movement, thus achieving linear lifting and lowering movements. The hydraulic pump is responsible for drawing oil from the oil source and pressurizing it to the required pressure. The hydraulic control valve regulates the flow of the liquid, controlling the speed and direction of the hydraulic cylinder's movement. The oil source is generally a hydraulic oil tank, which stores the hydraulic oil used to transmit pressure.

[0035] In this embodiment, the upper mold 42 and the lower mold 6 of the paper tray are equipped with a blow-suction assembly at opposite ends for adsorbing or blowing away the paper tray. The blow-suction assembly includes an air pipe and an air pump. Both the upper mold 42 and the lower mold 6 of the paper tray are provided with air holes. The air pipe is placed in the air hole and connected to the air pump pipeline. The air pump is connected to an external power source. The air pump includes a suction pump and a supply pump, which are respectively connected to the air pipe. The connection is a "Y"-shaped structure. When the suction pump is working, the supply pump stops working, and vice versa. Alternatively, the air pump in this solution can also be a vacuum pump. The vacuum pump is connected to the air pipe through a three-way valve. The opening and closing of the three-way valve is controlled by electromagnetic control to realize the supply or suction of air to the air pipe. In this solution, a mechanism for fixing and limiting the paper tray is provided. When the lower mold 6 of the paper tray is raised, the slurry inside the lower mold 6 is allowed to settle and solidify. At this time, air needs to be drawn into the air hole of the lower mold 6 to generate negative pressure. The negative pressure can adsorb the relatively moist paper tray product after solidification onto the lower mold 6. Then, the lower mold 6 and the upper mold 42 of the paper tray are brought together and squeezed to finally form a complete paper tray product. At this time, air is blown into the air hole of the lower mold 6 and air is drawn into the upper mold 42. The paper tray product will be directly adsorbed from the groove of the lower mold 6 onto the protrusion of the upper mold 42. Then, the traveling mechanism 2 can be used to drive the paper tray product into the final drying process.

[0036] This embodiment provides chambers 31 for accommodating different types of pulp slurry. Each chamber 31 contains a corresponding lower mold 6 for paper trays, and each lower mold 6 is different depending on the shape of the paper tray. This allows for the simultaneous molding of multiple different types of paper tray products. The process can be customized by changing the lower mold 6 and the corresponding upper mold 42 according to actual production needs, thereby meeting the requirements for producing paper trays of different shapes in one step.

[0037] In some embodiments, the upper mold assembly 4 includes a connector 41 and a support member. One end of the connector 41 is fixedly connected to the first drive end 5; several support members are provided (the number is the same as the upper mold 42 of the paper tray), circumferentially fixed to the connector 41, wherein any one support member corresponds to one of the chambers 31, and the upper mold 42 of the paper tray is detachably fixedly connected to the support member. In this embodiment, the connector 41 can be a circular plate structure, an annular plate structure, or a polygonal plate structure, steel structure, etc., and its main function is to connect the first drive end 5 and the support member, and firmly fix the upper mold 42 of the paper tray. The support member can be a support rod or a support plate structure, in order to provide support for the upper mold 42 of the paper tray and increase the stability of the upper mold 42 of the paper tray when rising or falling. In order to avoid a violent collision between the lower mold 6 of the paper tray and the upper mold 42 of the paper tray due to mechanical failure during the fall of the upper mold assembly 4, a support member is fixedly installed at the center of the pulp supply box 3. Figure 3The crushing tube 8 shown serves to offset the impact force during the compression between the lower die 6 and the upper die 42 of the paper tray by undergoing plastic deformation, thus preventing severe damage to the die. The height of the crushing tube 8 is set so as not to interfere with the merging process of the lower die 6 and the upper die 42. When the compressive force between the lower die 6 and the upper die 42 reaches a preset value, the crushing tube 8 acts as a support and stress reliever, meaning the compressive force is directly applied to the crushing tube 8.

[0038] In some embodiments, heating elements are provided at opposite ends of the upper mold 42 and the lower mold 6 of the paper tray for heating the upper mold 42 and the lower mold 6. The heating elements are electrically connected to an external power source. The heating elements are arranged adjacent to the air-blowing assembly, without interfering with each other. The heating elements can convert electrical energy into heat energy from an external power source and supply it to the upper mold 42 and the lower mold 6, thereby preheating and curing the relatively moist and unformed paper tray products, shortening the overall settling time. In this embodiment, the heating element can be a resistance heater; that is, by energizing the resistance heater, electrical energy is converted into heat energy to supply the upper mold 42 and the lower mold 6, and due to the heat diffusion effect, the upper mold 42 and the lower mold 6 are heated as a whole. Alternatively, the heating element can be a hot water pipe, through which hot water is circulated to achieve the heating function. Hot water is generated directly from an external water tank via a water pipe. The heating element starts working when the lower mold 6 of the paper tray rises 2-4 cm away from the surface of the slurry. This process mainly involves a distance sensor detecting distance information; the heating element starts working when the distance reaches the preset position.

[0039] It should be noted that the same pulp can be filled into multiple chambers 31 of the pulp supply box 3. In this case, multiple lower molds 6 of the paper tray have the same structure, and the corresponding upper molds 42 of the paper tray will also be adjusted accordingly. By adjusting and using lower molds 6 of the same structure, multiple paper tray products of the same type can be formed at one time, thereby improving the production efficiency of producing the same type of paper tray products.

[0040] In some embodiments, such as Figure 6As shown, the traveling mechanism 2 includes a second drive motor 21, a drive screw 22, a sliding block 23, and a protective shell 24. The second drive motor 21 is fixed to the fixed plate 11 by bolts. The protective shell 24 is directly mounted on the drive screw 22, and the drive screw 22 can rotate relative to the protective shell 24 via a mounting seat and bearing. One end of the drive screw 22 is directly driven connected to the output shaft of the second drive motor 21, so that when the output shaft of the second drive motor 21 rotates, the drive screw 22 can rotate with the output shaft of the second drive motor 21. One end of the protective shell 24 is directly welded to the fixed plate 11, and the other end extends towards the pulp supply box 3 and extends directly above the pulp supply box 3. The sliding block 23 is sleeved on the drive screw 22, and at this time, the sliding block 23 can reciprocate along the length direction of the drive screw 22. Assuming that when the second drive motor 21 rotates forward, the drive screw 22 rotates clockwise, and the sliding block 23 moves away from the drying mechanism 7; then when the second drive motor 21 rotates in reverse, the drive screw 22 rotates counterclockwise, and the sliding block 23 moves towards the drying mechanism 7. The sliding block 23 is fixed to the first drive end 5, so that as the sliding block 23 moves, it drives the first drive end 5 to move, which in turn drives the upper mold assembly 4 to move.

[0041] In this equipment, since the lower mold 6 of the paper tray is immersed in the slurry, the various circuit connections and pipes are susceptible to corrosion. To prevent corrosion, an elastic sealing sleeve is provided between the chamber 31 and the lower mold 6 of the paper tray. The elastic sealing sleeve wraps around the second drive end for sealing. The elastic sealing sleeve can be a corrugated pipe structure, which encloses the various circuit connections and pipes, thereby enhancing the service life of the lower mold 6 of the paper tray. Simultaneously, the corrugated pipe structure has good tensile and compressive properties, ensuring that the elastic sealing sleeve has a certain tensile strength.

[0042] In some embodiments, such as Figure 4As shown, the drying mechanism 7 includes: a housing 72, a heating assembly 74, and a vortex heat-concentrating element 75. The housing 72 has an opening at one end facing the traveling mechanism 2, which is a drying window 71. A partition 73 is provided inside the housing 72 at the end opposite the drying window 71, dividing the internal space of the housing 72 into a heating area and a non-heating area. The heating assembly 74 is fixedly connected to the non-heating area and extends into the heating area. The vortex heat-concentrating element 75 is sleeved on the heating assembly 74 and rotatably connected to the partition 73. The upper mold assembly 4 can enter the vortex heat-concentrating element 75 and can move up and down along the axial direction of the vortex heat-concentrating element 75. When the heating assembly 74 is activated, the vortex heat-concentrating element 75 generates vortex-concentrated hot air to dry the paper tray of the upper mold assembly 4. In this embodiment, in order to further shorten the drying time and improve the drying efficiency, the vortex heating element 75 is rotated inside the housing 72. As the heating component 74 generates a large amount of heat, the hot air will rise accordingly. During the rising process of the hot air, the rotating vortex heating element 75 will generate vortex energy-concentrating hot air, which will directly act on the paper tray product on the paper tray mold 42. The vortex hot air along one direction can evenly heat the paper tray product. On the one hand, it will not cause the paper tray to be undried due to uneven heating. On the other hand, it will shorten the drying time and improve the overall production efficiency.

[0043] Among them, such as Figure 5 As shown, the heating assembly 74 includes a sealing box 741, a heat dissipation pipe 742, and a heat sink 743. The sealing box 741 is fixed in the non-heating area, and an electric heating element is installed inside the sealing box 741. The electric heating element is electrically connected to an external power source. The heat dissipation pipe 742 is disposed on the sealing box 741 and fixedly connected to the electric heating element. The heat dissipation pipe 742 passes through the heat sink 743 and extends to the heating area. In this design, the heating area can provide vortex-driven concentrated hot air to quickly dry the paper tray, while the sealing box 741 in the non-heating area can prevent the hot air from affecting the electric heating element, thereby protecting the electric heating element.

[0044] More specifically, the eddy current heating element 75 includes: a first drive motor 751 and a rotating assembly 752. The first drive motor 751 is fixed to the non-heating area, and the output shaft of the first drive motor 751 is fixedly connected to a worm gear 754. A gear ring 753 is fixedly sleeved on the outer surface of the rotating assembly 752, and the rotating assembly 752, the gear ring 753, and the partition plate 73 rotate relative to each other via a bearing ring 755. Specifically, the partition plate 73 has a circular hole 731, the outer ring of the bearing ring 755 is fixed in the circular hole 731, and the inner ring of the bearing ring 755 is fixedly connected to the outer surface of the rotating assembly 752. Ball bearings and a retainer are preset between the outer ring and the inner ring, so that the rotating assembly 752 can rotate relative to the partition plate 73. The worm gear 754 and the gear ring 753 mesh with each other. Several guide ribs 7521 are fixedly connected to the inner surface of the rotating assembly 752. The upper mold assembly 4 can move up and down within the rotating assembly 752, and a gap is reserved between the guide ribs 7521 and the upper mold assembly 4. In this scheme, the first drive motor 751 drives the worm gear 754 to rotate, and the rotating worm gear 754 drives the gear ring 753 to rotate, thereby driving the rotating assembly 752 to rotate. At this time, the guide ribs 7521 actuate the hot air, allowing the hot air to rotate clockwise or counterclockwise within the rotating assembly 752, thereby generating vortex-concentrated hot air. The reserved gap can prevent the guide ribs 7521 from interfering with the upper mold 42 of the paper tray when the rotating assembly 752 rotates, thereby preventing the guide ribs 7521 from peeling the paper tray off the upper mold 42 when rotating.

[0045] Furthermore, to enhance the effect of generating vortex-focused hot air, the guide ribs 7521 are bent towards the axis, and the bending direction of each guide rib 7521 is consistent, either clockwise or counterclockwise. The bending structure guides the hot air, directing it to generate vortices, while the consistent bending direction ensures a consistent flow of hot air, preventing turbulence. It should be explained that turbulent hot air not only prevents the paper tray from being heated evenly, but also creates airflow fluctuations that can significantly impact the surface of the paper tray, potentially damaging it.

[0046] In some embodiments, the device further includes a support platform 9, with the pulp supply box 3 fixed on the support platform 9. The support platform 9 contains a sludge pump and a sludge collection chamber, with the sludge pump connected to the sludge collection chamber via a pipeline. A through channel 10 is provided between the drying mechanism 7 and the support platform 9, and the sludge pump is connected to the through channel 10. In this design, the partition 73 can be equipped with multiple drop holes, allowing paper tray debris falling during the drying process to directly enter the non-heated area through the drop holes. As the sludge pump operates, it can draw the paper tray debris into the sludge collection chamber, preventing the paper tray debris from igniting due to heat during subsequent continuous heating of the heating area, thus improving the overall safety performance of the machine.

[0047] Based on the above-mentioned integrated paper tray forming equipment, the present invention also relates to a paper tray forming process, the specific process of which is as follows: Step 1: Prepare the slurry: Step 1.1: Use wood pulp (sulfate wood pulp, sulfate semi-chemical wood pulp, alkaline wood pulp) and recycled pulp as raw materials for paper pulp, and add chemical additives as auxiliaries to improve the performance of paper trays. Among them, chemical additives include thickeners, antibacterial agents, and waterproofing agents.

[0048] Step 1.2: Prepare different types of pulp by distributing the pulps according to the following proportions and using different types of wood pulp: The thickener is controlled at 0.2-0.8% of the total pulp, the antibacterial agent at 0.2-0.35%, and the waterproofing agent at 1.5-1.8%. Based on the above wood pulp, at least three different types of pulp can be prepared.

[0049] Step 2: Inject the prepared pulp into each chamber 31 of the pulp supply box 3 through the infusion tube until the lower mold 6 of the paper tray is submerged.

[0050] Step 3: Start the second drive end to make the lower mold 6 of the paper tray extend out of the liquid surface of the slurry, and after standing for T1 time, continue to drive the lower mold 6 of the paper tray to rise until it merges with the upper mold 42 of the paper tray. At this time, after standing for T2 time, start the second drive end in reverse to separate the lower mold 6 of the paper tray from the upper mold 42 of the paper tray, and then turn off the second drive end.

[0051] Step 4: Start the first drive end 5 until the mold 42 on the paper tray is raised to the limit point, and then stop the first drive end 5; wherein, the limit point refers to the position of the mold 42 on the paper tray when the first drive end 5 is shortened to the shortest stroke.

[0052] Step 5: Start the traveling mechanism 2, so that the traveling mechanism 2 drives the mold 42 on the paper tray to move toward the drying mechanism 7 until the mold 42 on the paper tray moves to the position on the drying mechanism 7 opposite to the drying window 71, and then stop the traveling mechanism 2.

[0053] Step 6: Start the first drive end 5 until the mold 42 on the paper tray descends into the drying window 71. Stop the first drive end 5 and start the drying mechanism 7 to dry the paper tray on the mold 42. The drying time is T3, where the relationship between T1, T2, and T3 is: 0 < T2 ≤ T1 = T3. T1, T2, and T3 can be set by the operator based on experience, depending on the different pulp, the shape of the paper tray, and other working conditions.

[0054] In the description of this invention, it should be understood that the terms "top", "bottom", "upper", "lower", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0055] In this invention, unless otherwise expressly specified and limited, the first feature "on" the second feature may be in direct contact with the first and second features, or indirect contact with the first and second features through an intermediate medium. "A plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

[0056] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] The above description is merely illustrative of the embodiments of the present invention and is not intended to limit the present invention. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made without creative effort within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A paper tray forming integrated equipment, characterized in that, include: Support frame; The traveling mechanism, fixed to the support frame, is used for lateral movement; The pulp supply box has multiple chambers, which are filled with the same or different types of pulp. The upper mold assembly is suspended on the traveling mechanism and can move laterally with the traveling mechanism. The upper mold assembly is provided with a first driving end at the suspension point, which can drive the upper mold assembly to move toward or away from the pulp supply box. The upper mold assembly is provided with a paper tray upper mold at one end relative to the suspension point. Adjacent paper tray upper molds are of the same or different structures. The lower mold assembly is arranged opposite to the upper mold assembly and placed inside the pulp supply box. The lower mold assembly has a lower mold for the paper tray at one end opposite to the upper mold of the paper tray. The second driving end can drive the lower mold of the paper tray to move toward the upper mold of the paper tray. The drying mechanism is arranged adjacent to the pulp supply box and has a drying window. The traveling mechanism can drive the upper die assembly to move to the drying window of the drying mechanism. The drying mechanism includes: The housing has an opening at one end facing the traveling mechanism, which is a drying window. A partition is provided inside the housing at the end opposite to the drying window, which divides the internal space of the housing into a heating area and a non-heating area. A heating element is fixedly connected to the non-heated area and extends into the heated area to provide a heat source; A vortex heating element is sleeved on the heating assembly and rotatably connected to the partition plate. The upper mold assembly can enter the vortex heating element and can move up and down along the axial direction of the vortex heating element. When the heating component is activated, the eddy current heating element generates eddy current concentrated hot air to dry the paper tray of the upper mold component.

2. The paper tray forming integrated equipment according to claim 1, characterized in that, The upper and lower molds of the paper tray are provided with a blow-suction assembly at opposite ends for adsorbing or blowing away the paper tray; The blowing-suction assembly includes an air pipe and an air pump. Both the upper and lower molds of the paper tray are provided with air holes. The air pipe is placed inside the air holes. The air pipe is connected to the air pump pipeline, and the air pump is connected to an external power source.

3. The paper tray forming integrated equipment according to claim 1, characterized in that, The upper and lower molds of the paper tray are equipped with heating elements at opposite ends for heating the upper and lower molds of the paper tray. The heating elements are connected to an external power source.

4. The paper tray forming integrated equipment according to claim 1, characterized in that, The upper mold component includes: A connector, one end of which is fixedly connected to the first driving end; Several support members are circumferentially fixed to the connectors, and each support member corresponds to one of the chambers. The mold on the paper tray is fixed to the support member.

5. The paper tray forming integrated equipment according to claim 1, characterized in that, The first drive end and the second drive end are one of the following: electric lifting assembly, pneumatic lifting assembly, and hydraulic lifting assembly.

6. The paper tray forming integrated equipment according to claim 1, characterized in that, The heating component includes: A sealed box is fixed in a non-heated area, and an electric heating element is installed inside the sealed box. The electric heating element is electrically connected to an external power source. A heat dissipation pipe is mounted on a sealed box and fixedly connected to an electric heating element, extending to the heating area.

7. The paper tray forming integrated equipment according to claim 1, characterized in that, The eddy current heat-concentrating element includes: The first drive motor is fixed in the non-heated area, and the output shaft of the first drive motor is fixedly connected to a worm gear; A rotating assembly has a gear ring fixedly fitted on its outer surface, and the rotating assembly rotates relative to the gear ring and the partition, with the worm gear meshing with the gear ring. The inner surface of the rotating kit is fixedly connected with several guide ribs, the upper mold assembly can be raised and lowered within the rotating kit, and a gap is reserved between the guide ribs and the upper mold assembly.

8. The paper tray forming integrated equipment according to claim 1, characterized in that, The traveling mechanism includes: The second drive motor is fixed on the support frame; A drive screw, one end of which is fixedly connected to the output end of a second drive motor; A sliding block is mounted on the drive screw and can reciprocate along the length of the drive screw. The first drive end is suspended on the sliding block.

9. A paper tray forming process, characterized in that, The paper tray production process using the integrated paper tray forming equipment according to any one of claims 1-8 includes: Prepare the slurry; The prepared pulp is injected into each chamber of the pulp supply box through the infusion tube until it submerges the mold under the paper tray; Start the second drive end to make the lower mold of the paper tray extend out of the liquid surface of the slurry, and after standing for T1 time, continue to drive the lower mold of the paper tray to rise until it merges with the upper mold of the paper tray. At this time, after standing for T2 time, start the second drive end in reverse to separate the lower mold of the paper tray from the upper mold of the paper tray, and then turn off the second drive end. Start the first drive end until the mold on the paper tray rises to the limit point, then stop the first drive end; Start the traveling mechanism to move the mold on the paper tray toward the drying mechanism until the mold on the paper tray moves to the position on the drying mechanism opposite to the drying window, then stop the traveling mechanism. Start the first drive end until the mold on the paper tray descends into the drying window, then turn off the first drive end and start the drying mechanism to dry the paper tray on the mold on the paper tray. The drying time is T3, where the relationship between T1, T2, and T3 is: 0 < T2 ≤ T1 = T3.

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