Paper tray hot-pressing and edge-cutting integrated machine

Abstract

The application provides a paper holder hot-pressing and edge-cutting integrated machine, and belongs to the technical field of paper holder production. The machine comprises a shell, an upper die, a lower die, a pulp box, a drying part and a cutter. The upper die is hung in the shell and can move up and down; the lower die is arranged opposite to the upper die and can be pressed with the upper die; the pulp box is arranged in the shell and is open on the side facing the upper die; the lower die is arranged in the pulp box and can move up and down relative to the pulp box; the drying part is hung on the inner wall of the shell and can slide up and down; one end of the lower die facing the upper die is provided with a containing groove, the cutter is arranged in the containing groove and can be lifted and lowered, and after the wet paper holder is heated and formed into a dry paper holder, the cutter can extend out of the containing groove to cut the edges of the dry paper holder. Through the application, the paper holder forming function, the drying function and the edge-cutting function can be integrated, the equipment footprint is reduced, the production line is shortened, the additional transportation time is not needed, and the production efficiency of the whole machine is improved.

Description

Technical Field

[0001] This invention belongs to the field of paper tray production technology, and more specifically, relates to a paper tray hot pressing and edge cutting integrated machine. Background Technology

[0002] The technology of paperboard production primarily involves manufacturing paperboards using pulp as the main raw material. The key to this technology lies in the pulp treatment and forming processes, which determine the strength, durability, and environmental friendliness of the paperboard. First, the raw material for paperboard production is typically waste paper, with pulp obtained through recycling being used as the basis for production. After deinking and pulping, the waste paper forms a homogeneous pulp, a process that not only conserves resources but also reduces the environmental impact of waste. The treated pulp is then fed into forming equipment, which typically includes molds and compression systems to shape the pulp into paperboards of various shapes. The design of the molds is crucial to the final shape and function of the paperboard and is usually designed and adjusted according to customer needs and the specific application of the product. The formed paperboards are then heated and dried in drying equipment to ensure sufficient strength and stability. The drying process is critical for the quality control of the paperboard, as excessively high or low humidity levels will affect the performance of the final product. Paperboard production also involves post-processing steps such as trimming, coating, and printing to meet different packaging requirements and aesthetic needs.

[0003] Existing paper tray production lines typically include pulp tanks, pulp suction equipment, paper tray forming equipment, drying equipment, and edge trimming equipment. These devices usually utilize conveyor belts, manual labor, or robots to transfer the formed paper trays to the drying equipment. After the paper trays are completely dried and formed, they are then sent to the edge trimming equipment for edge trimming. However, due to the large number of devices, the large floor space required, and the excessively long production line, the production of paper trays necessitates additional transportation time, thus extending the overall production time and reducing overall production efficiency. Summary of the Invention

[0004] The main purpose of this application is to provide a paper tray hot pressing and trimming integrated machine that integrates paper tray forming, drying and trimming functions into one machine, reducing the floor space occupied by the equipment and shortening the production line, thereby eliminating the need for additional transportation time and improving the overall production efficiency of the machine.

[0005] To achieve the above objectives, this application proposes a paper tray hot pressing and trimming integrated machine, comprising: case; The upper module is suspended inside the housing and can move up and down along the axis of the housing. The lower mold is positioned opposite to the upper mold and can move up and down along the axis of the housing, and can be pressed together with the upper mold; A pulp box is disposed inside the housing and is open to the side facing the upper mold. The lower mold is disposed inside the pulp box and is able to move up and down relative to the pulp box. The drying component is attached to the inner wall of the housing and can slide up and down along the axis of the housing. When the drying component slides to the position where the upper mold presses against the lower mold, it can heat the wet paper tray. The cutter is provided with a receiving groove at one end of the lower mold facing the upper mold. The cutter is placed in the receiving groove and can move up and down relative to the receiving groove. When the wet paper tray is heated to form a dry paper tray, the cutter can extend out of the receiving groove to cut the edge of the dry paper tray.

[0006] This integrated machine combines molding, drying, and trimming functions, shortening the production line and eliminating the transportation time between multiple machines in traditional production, thus improving overall production efficiency. This integrated design simplifies the operation process, making the paper tray production process more efficient and stable. The cutter, the main mechanism for cutting dry paper trays, can be retracted into the receiving groove when not in use, without interfering with the paper tray molding process. When trimming is required, the cutter extends from the receiving groove, directly pressing against the edge of the dry paper tray to cut it and remove excess material.

[0007] Furthermore, the cutting tool includes: A first driving member is disposed on the outer surface of the lower mold member. The lower mold member has a lifting groove perpendicular to the receiving groove. The first driving member can extend into the lifting groove and move toward the receiving groove. The tool holder is fixedly connected to the first driving component, which can drive the tool holder to move up and down. A ring cutter is fixed on a cutter holder and has a cutting edge that is inclined toward the center of the ring cutter.

[0008] First, the design of the first drive component allows the cutter to effectively engage with the outer surface of the lower die and within the lifting groove. By controlling the telescopic movement of the first drive component, the cutter holder can move precisely up and down along the lifting groove. This design improves the positioning accuracy of the cutter and ensures the precision of the cutting operation. Second, the fixed connection between the cutter holder and the first drive component makes the lifting operation of the cutter more stable, avoiding potential shaking or deviation during cutting, thereby improving cutting quality. Finally, the annular cutter's blade is angled towards the center, which not only optimizes the sharpness of the cut but also effectively reduces pressure on the dry paper tray during cutting, ensuring a smooth and even cut edge. In summary, these design improvements effectively enhance the cutting efficiency and precision of the equipment, reduce the defect rate in the production process, and thus further improve overall production efficiency and product quality.

[0009] Furthermore, the annular cutter has a multi-textured sanding surface at one end facing the cutter holder. The texture is either a wavy line texture arrayed along the direction perpendicular to the cutting edge or a grid-like texture arranged alternately along the direction perpendicular to the cutting edge.

[0010] The wavy or grid-like texture on the abrasive strip is primarily used to remove burrs from the cut surface after edge trimming. By rubbing the cut surface, residual burrs are effectively removed, the cut edges are smoothed, and the cutting quality is improved. The frictional effect of the texture not only improves the smoothness of the cut surface and reduces roughness, but also enhances the appearance and feel of the finished product. Furthermore, the abrasive strip applies uniform friction to the cut surface during cutting, helping to further ensure the neatness and consistency of the cut edges, reducing the complexity of subsequent processing and the need for manual finishing, thereby improving production efficiency and the overall quality of the finished product.

[0011] Furthermore, the upper module includes: The second driving component is suspended along the axial direction of the housing; The upper mold is fixed to the bottom of the second driving component. The upper mold has a convex cavity at one end facing the lower mold. The convex cavity has several first air holes. The first air holes are connected to an external suction pump through a pipeline to adsorb the dried paper tray after it has been formed.

[0012] The second drive component, suspended along the axis of the housing, precisely controls the up-and-down movement of the upper mold, ensuring accurate alignment between the upper and lower mold components during the paper tray forming process. The convex cavity and several first air holes at the bottom of the upper mold, connected to an external suction pump, form an adsorption system that effectively adsorbs the dried paper tray after forming. This design not only facilitates the stable removal of the dried paper tray from the mold after forming, preventing damage or deformation during demolding, but also improves the automation level of the production process. By reducing reliance on manual removal, labor intensity is reduced, while improving the production efficiency and consistency of the finished product. Furthermore, the adsorption system ensures that the dried paper tray maintains a stable shape during subsequent processing and transportation, thereby enhancing the reliability of the overall production process and product quality.

[0013] Furthermore, the convex cavity is provided with a clearance groove at a position relative to the receiving groove, and the cutting member can extend into the clearance groove to avoid the cutting member from colliding with the convex cavity and causing the cutting member to deform.

[0014] The clearance groove design effectively provides the necessary space for the cutter, allowing it to extend smoothly into the groove during edge trimming. This design avoids direct contact between the cutter and the convex cavity, thus preventing potential collisions and reducing the risk of deformation due to impact. This measure extends the cutter's lifespan and significantly improves the stability and reliability of the cutting process. Furthermore, collision avoidance reduces equipment maintenance needs and repair frequency, further improving the overall efficiency and economy of the production line. This design enhances safety and operational continuity during production, ensuring efficient paper tray forming and edge trimming operations.

[0015] Furthermore, the lower module includes: The third driving component is installed on the pulp box and can move up and down relative to the pulp box. The pulp box and the third driving component are sealed together by an elastic sealing element. The lower mold is fixed to the top of the third driving component. The lower mold has a concave cavity at one end facing the upper mold. The concave cavity has several second air holes. The second air holes are connected to an external suction pump through a pipeline for adsorbing the dried paper tray after molding. The receiving groove is located on the edge of the concave cavity.

[0016] The third drive component is mounted on the pulp box and can move up and down relative to it. It is sealed to the pulp box via an elastic seal, effectively preventing pulp leakage or interference while ensuring the stability and sealing performance of the lower mold during operation. The lower mold is fixed to the top of the third drive component. Its concave cavity and the second air hole within it, connected to an external suction pump, form an adsorption system that effectively adsorbs the formed dry paper tray, ensuring its smooth removal from the mold without deformation or damage.

[0017] Further, the drying component includes: The fourth drive unit is suspended at the top of the housing and extends into the housing, and can move up and down along the axis of the housing. An annular heating column has a fixed base at one end, the end of the fourth driving member is fixed to the fixed base, and a sliding block is provided at the other end of the annular heating column. The housing is provided with a slide rail along the axial direction, and the sliding block is placed on the slide rail to slide. The inner cavity of the annular heating column is provided with several arc-shaped heating tubes, which are connected to an external power source via a circuit.

[0018] The fourth driving component allows the annular heating column to move up and down along the axis of the housing, enabling precise height adjustment during the drying process to accommodate paper trays of varying thicknesses and shapes, ensuring uniform and effective heating. The fixed base of the annular heating column is securely connected to the end of the fourth driving component, ensuring stability during lifting and lowering. The sliding block's design on the slide rail allows for smooth movement of the annular heating column, avoiding unnecessary friction and obstruction. The arc-shaped heating tube inside the annular heating column is connected to an external power source via an electrical circuit, providing efficient heating capacity and ensuring rapid and uniform heating of the paper trays during the drying process, thus improving drying results. The overall design optimizes the heating process, reduces energy consumption, improves production efficiency, and also ensures the quality and stability of the paper trays after forming.

[0019] Furthermore, a fifth driving component is connected to the bottom of the pulp box. The fifth driving component is fixed to the bottom of the housing and can be raised and lowered relative to the housing. The housing is equipped with a baffle plate. When the pulp box is against the baffle plate, the middle part of the baffle plate can be gradually opened. The baffle plate is reserved with a passage for the lifting and lowering of the cutter. When hot pressing is required, the pulp box rises and touches the baffle plate. At this time, the baffle plate is opened, the lower mold rises and falls until the upper mold and the lower mold are pressed together. The drying part is lowered to the pressed position and the upper mold and the lower mold are dried to finally form a dry paper tray. When it is necessary to trim the dry paper tray, the drying component rises and disengages from the pressing position, the lower mold component descends and separates from the upper mold component, the pulp box descends to close the middle of the baffle plate, and the cutter component rises from the receiving groove to trim the dry paper tray.

[0020] When the pulp box is pressed against the baffle, the middle of the baffle gradually opens, leaving a passage for the cutting blade to rise and fall. This design allows the upper and lower mold parts to be pressed together and processed by the drying unit to form a dry paper tray during thermoforming. During edge trimming, the drying unit rises, the pulp box descends to close the baffle, and the cutting blade rises to trim the dry paper tray. The baffle also blocks paper tray debris during trimming, preventing it from entering the pulp box.

[0021] Furthermore, the baffle includes two semi-circular baffles, each with a hinged end in the middle. The hinged end allows the semi-circular baffle to bend, with a maximum bending angle of 90°. One end of the semi-circular baffle away from the middle is fixedly connected to the inner wall of the housing. The baffle is used to prevent debris from entering the pulp box.

[0022] Furthermore, a transfer window is provided on the housing at the position where the upper and lower molds are pressed together, and the transfer window provides a transfer channel for the paper tray after the edge is cut.

[0023] The transfer channel design efficiently transfers the finished paper trays from the processing area to the subsequent processing area, reducing manual intervention and transportation time, improving the automation level and work efficiency of the production line, while ensuring the smoothness of the production process and the timely delivery of products.

[0024] The paper tray hot pressing and edge trimming integrated machine proposed in this invention has the following beneficial effects: This invention integrates three major functions: paper tray forming, drying, and edge trimming. The equipment not only shortens the production line length but also avoids the transportation time between multiple devices in traditional production, thereby improving overall production efficiency. This integrated design simplifies the operation process, making the paper tray production process more efficient and stable. The cutter, as the main mechanism for cutting dry paper trays, can be retracted into the receiving groove when not in use, without interfering with the paper tray forming process. When edge trimming is required, the cutter extends from the receiving groove and directly presses against the edge of the dry paper tray to cut it, removing excess material. Attached Figure Description

[0025] Figure 1 This is a partial cross-sectional schematic diagram of the paper tray hot pressing and trimming integrated machine of the present invention; Figure 2 For the present invention Figure 1 A magnified schematic diagram of a portion of the AA structure; Figure 3 This is a diagram showing the positional relationship between the sliding block and the slide rail in this invention; Figure 4 This is an exploded view of the cutting component of the present invention; Figure 5 This is a top view of the annular heating column of the present invention. Figure 6 This is a schematic diagram of another embodiment of the paper tray hot pressing and trimming integrated machine of the present invention.

[0026] In the diagram, 1. Shell, 11. Transfer window, 2. Upper mold, 21. Second drive, 22. Upper mold, 3. Lower mold, 31. Third drive, 32. Lower mold, 33. Concave cavity, 34. Receiving groove, 4. Pulp box, 5. Drying component, 51. Fourth drive, 52. Annular heating column, 521. U-shaped groove, 522. Fixing hole, 523. Suspension hole, 524. Telescopic rod A, 53. Sliding block, 54. Slide rail, 55. Arc-shaped heating tube, 6. Cutting component, 61. First drive, 62. Knife holder, 63. Annular cutter, 7. Elastic seal, 8. Fifth drive, 9. Baffle plate, 91. Hinge end, 10. Fixing plate. Detailed Implementation

[0027] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0028] 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.

[0029] Example Existing paper tray production lines typically use conveyor belts, manual labor, or robots to transfer the formed paper trays to the drying equipment. After the paper trays are completely dried and formed, they are then sent to the edge-trimming equipment for edge trimming. However, due to the large number of devices, large floor space, and excessively long production lines, the above process requires additional transportation time during paper tray production, thereby extending the overall production time and reducing overall production efficiency.

[0030] Based on this, in order to reduce floor space, shorten production time, and improve the overall production efficiency of the machine, this embodiment provides a paper tray hot pressing and trimming integrated machine, see reference. Figure 1 and Figure 4 The main components include a housing 1, an upper mold 2, a lower mold 3, a pulp box 4, a drying unit 5, and a cutting unit 6. The entire equipment has a compact design and integrates three major functions: paper tray forming, drying, and edge trimming, which greatly improves production efficiency.

[0031] First, the housing 1 forms the frame of the entire equipment, employing a cylindrical structure to improve the overall compactness of the machine. The upper mold 2 is suspended inside the housing 1 and can move up and down along the axis of the housing 1. This allows the upper mold 2 to achieve precise vertical movement during the paper tray production process, cooperating with the lower mold 3 to complete the thermoforming of the paper tray. The lower mold 3 is located in the middle and lower reaches of the housing 1, opposite the upper mold 2, and can move up and down along the same axis, pressing against the upper mold 2. Inside the pulp box 4, the lower mold 3 fits tightly with the bottom of the pulp box 4 and can move up and down relative to the pulp box 4. This design ensures that the upper mold 2 and lower mold 3 can be precisely pressed together during paper tray forming. The pulp box 4 is a container for holding the pulp, designed to open towards the side facing the upper mold 2, facilitating the vertical movement of the lower mold 3. Initially, the lower mold 3 is immersed in the pulp. When a paper tray needs to be formed, the lower mold 3 can rise, thus lifting the pulp from the pulp box 4. When the upper mold 2 and the lower mold 3 are pressed together, a pressing cavity is formed, and the pulp fills the pressing cavity to form a wet paper tray. After the drying component 5 heats the upper mold 2 and the lower mold 3, the wet paper tray in the pressing cavity will form a dry paper tray. The drying component 5 is attached to the inner wall of the housing 1 and can slide up and down along the axis of the housing 1. When the drying component 5 slides to the position where the upper mold 2 presses the lower mold 3, it provides the necessary heating for the wet paper tray. In this way, the wet paper tray can quickly become a dry paper tray after hot pressing, thus completing the forming process. The cutter 6 is designed on the lower mold 3 at the end facing the upper mold 2, and a cutter is provided at the edge of the lower mold 3. Figure 4 The receiving groove 34 is shown. The cutter 6 is placed in the receiving groove 34 and can move up and down relative to the receiving groove 34. After the wet paper tray is thermoformed and transformed into a dry paper tray, the cutter 6 can extend from the receiving groove 34 and press the edge of the dry paper tray to perform an edge trimming operation to remove excess material from the dry paper tray.

[0032] In summary, this integrated machine combines forming, drying, and trimming functions into a single system, significantly shortening the production line length and effectively reducing transportation time between machines in traditional production. This integrated design optimizes the operating process, making the paper tray production process more efficient and stable. Particularly noteworthy is the design of the cutter 6, which retracts into the receiving slot 34 when not in use, without interfering with the paper tray forming process. During trimming, the cutter 6 extends and applies pressure to precisely cut the edges of the dry paper tray, removing excess material and thus significantly improving production efficiency and product quality.

[0033] In order to more accurately express the movement process of the upper mold 2 and the lower mold 3 in this embodiment, it is necessary to introduce the structure of the upper mold 2 and the lower mold 3.

[0034] In this embodiment, reference Figure 1 The upper mold component 2 includes a second driving component 21 and an upper mold 22. The second driving component 21 is suspended from the top of the housing 1 using fasteners such as bolts and connectors, and extends into the interior of the housing 1 along its axial direction. In this embodiment, the second driving component 21 can be an electric push rod, with one end fixed to the top of the housing 1 and its push rod extending into the interior of the housing 1. The electric push rod operates based on a motor driving a screw to generate linear motion. The electric push rod includes a motor, a screw, and a push rod. The motor transmits rotational motion to the screw through gears or a transmission device, and the rotation of the screw drives the push rod to move axially. A nut inside the screw is threaded onto the screw; when the screw rotates, the nut slides axially on the screw, thereby pushing the push rod to perform linear motion. Specifically, the motor is connected to an external power source, and the extension / retraction length of the push rod is adjusted by controlling the rotation direction of the motor. The rotation direction control of the motor is typically achieved through a motor drive controller (such as a frequency converter or DC motor driver). The controller adjusts the current direction of the motor, thereby changing the rotation direction of the motor. For DC motors, this is typically achieved by changing the polarity of the motor power supply. The controller alternately applies positive and negative voltages to different pins of the motor, causing it to rotate in the forward or reverse direction. For AC motors, the direction of rotation can be controlled by changing the phase sequence of the power supply or by adjusting the phase angle using a frequency converter. The commands received by the controller are used to adjust the motor's running direction through these electrical means to meet specific operational requirements. The above-described principle of extending and retracting the push rod by controlling it with a motor is a common existing principle. Of course, the second drive unit 21 can also be extended and retracted by controlling the push rod with a hydraulic cylinder. The working principle of extending and retracting the push rod with a hydraulic cylinder is based on the transmission and action of liquid pressure. The hydraulic cylinder consists of a cylinder barrel and a piston, with the cylinder barrel filled with liquid (usually hydraulic oil). A hydraulic pump delivers hydraulic oil to the inlet of the hydraulic cylinder through pipelines. When the oil enters one end of the cylinder, the resulting hydraulic pressure pushes the piston to the other end, causing the push rod to extend. When the push rod needs to retract, the control system causes the hydraulic oil to flow out from the other end of the hydraulic cylinder, and the piston returns to its initial position under the action of the oil pressure. By controlling the pressure, flow rate, and direction of the hydraulic pump, the extension and retraction of the push rod can be precisely controlled to achieve the required displacement and action.

[0035] In this embodiment, the upper mold 22 is fixed to the bottom of the second drive component 21 by fasteners such as clamps, pins, and bolts. The end of the upper mold 22 facing the lower mold component 3 has a convex cavity with several first air holes. These first air holes are connected to an external suction pump via pipelines and a solenoid valve A to adsorb the formed dry paper tray. The second drive component 21 is suspended along the axis of the housing 1, enabling precise control of the up-and-down movement of the upper mold 22 to ensure accurate alignment between the upper mold 22 and the lower mold component 3 during paper tray forming. The bottom of the upper mold 22 has a convex cavity and several first air holes, which, through the adsorption system connected to the external suction pump, effectively adsorb the formed dry paper tray. This design not only stably removes the dry paper tray from the mold, preventing damage or deformation during demolding, but also improves the automation level of the production process. It reduces reliance on manual removal, lowers labor intensity, and improves the production efficiency and consistency of the finished product. The adsorption system also ensures that the dry paper tray maintains a stable shape during subsequent processing and transportation, improving the reliability of the overall production process and product quality.

[0036] In some embodiments, a clearance groove is provided at the position of the convex cavity relative to the receiving groove 34, so that the cutter 6 can extend smoothly into the clearance groove, avoiding collision with the convex cavity and thus preventing deformation of the cutter 6. The clearance groove design provides the necessary space for the cutter 6, allowing it to move smoothly during the edge trimming operation. This design effectively avoids direct contact between the cutter 6 and the convex cavity, reducing the risk of deformation due to collision, thereby extending the service life of the cutter 6 and improving the stability and reliability of the cutting process. Avoiding collisions also reduces the maintenance and repair needs of the equipment, further improving the efficiency and economy of the production line. Overall, this design enhances the safety and continuity of the production process, ensuring the efficient completion of paper tray forming and edge trimming operations.

[0037] In this embodiment, reference Figure 1 and Figure 2The lower mold component 3 includes a third driving component 31 and a lower mold 32. The third driving component 31 passes through the pulp box 4 and is capable of moving up and down relative to the pulp box 4. The pulp box 4 and the third driving component 31 are sealed together by an elastic sealing element 7. Specifically, the driving part of the third driving component 31 is located inside the housing 1, below the pulp box 4. This driving part can be an electric motor, a hydraulic cylinder, a pneumatic cylinder, etc. The output end of the telescopic component (i.e., telescopic rod) of the third driving component 31 is fixedly connected to the output end of the electric motor via a screw, or the telescopic rod is fixedly connected to the lifting end of the hydraulic cylinder, or the lifting end of the pneumatic cylinder. Thus, the telescopic rod extends into the cavity of the pulp box 4 and is fixedly connected to the lower mold 32. Therefore, the lower mold 32 can telescopically move relative to the pulp box 4 under the drive of the third driving component 31. In this embodiment, the electric-driven telescopic rod, the hydraulic-driven telescopic rod, and the pneumatic cylinder-driven telescopic rod are all common methods in the prior art and will not be described in detail here. Specifically, the lower mold 32 is fixed to the top of the third driving component 31. The end of the lower mold 32 facing the upper mold 22 has a concave cavity 33, which contains several second air holes. These second air holes are connected to an external suction pump via pipes and a solenoid valve B, used to adsorb the formed dry paper tray. A receiving groove 34 is located at the edge of the concave cavity 33. The pipes connecting the first air holes, the second air holes, and the suction pump form a "Y"-shaped structure. When air needs to be drawn from the convex cavity of the upper mold 22, the solenoid valve A can be opened, the solenoid valve B closed, and the suction pump powered on by current control, allowing the suction pump to operate. At this time, the dry paper tray is firmly adsorbed onto the upper mold 22. Similarly, when air needs to be drawn from the concave cavity 33 of the lower mold 32, the solenoid valve B can be opened, the solenoid valve A closed, and the suction pump powered on by current control, allowing the suction pump to operate. At this time, the paper tray is firmly adsorbed onto the lower mold 32. In this logic, the suction systems of the upper mold 22 and the lower mold 32 are mutually exclusive; that is, when suction is applied to the convex cavity of the upper mold 22, suction cannot be applied to the concave cavity 33 of the lower mold 32. In this system, the third driving component 31 passes through the pulp box 4 and can move up and down relative to it. Through the elastic sealing element 7 between it and the pulp box 4, leakage or interference of pulp within the pulp box 4 can be effectively prevented, while ensuring the stability and sealing performance of the lower mold 32 during operation. The lower mold 32 is fixed to the top of the third driving component 31. The concave cavity 33 and its internal second air hole, through a suction system formed by a pipeline connected to an external suction pump, can effectively adsorb the formed dry paper tray, ensuring its smooth removal from the mold without deformation or damage. The elastic sealing element 7 can be an elastic bellows with a certain degree of extensibility.

[0038] To more accurately describe the function and movement of the cutter component 6, it is necessary to introduce its specific structure. (Reference) Figure 4 The cutting component 6 includes a first driving component 61, a tool holder 62, and an annular cutter 63. In practical applications, the first driving component 61 is mounted on the outer surface of the lower mold component 3. A lifting groove is vertically arranged inside the lower mold component 3 and perpendicular to the receiving groove 34. The first driving component 61 can extend into the lifting groove and move towards the receiving groove 34. The first driving component 61 is primarily an electric push rod; by controlling the rotation direction of the electric push rod's motor, its lifting and lowering can be achieved. The lifting rod within the electric push rod is located within the lifting groove and moves up and down relative to it. The working principle of the first driving component 61 here is the same as that of the electric push rod in the second driving component 21 mentioned above; however, due to space limitations, the first driving component 61 is designed as an electric push rod structure. The tool holder 62 is fixedly connected to the first driving component 61, and the first driving component 61 can drive the tool holder 62 to move up and down. The tool holder 62 is also designed as an annular structure, and the corresponding receiving groove 34 is also an annular structure, which perfectly secures the annular cutter 63. Specifically, the annular cutter 63 is fixed to the cutter holder 62 by a fixing buckle, and the annular cutter 63 has a blade facing the paper tray, with the blade angled towards the center of the annular cutter 63. It should be noted that the design of the first drive component 61 ensures precise fit between the cutter 6 on the outer surface of the lower mold 3 and the lifting groove. By adjusting the telescopic movement of the first drive component 61, the cutter holder 62 can move precisely up and down along the lifting groove, thereby improving the positioning accuracy of the cutter and ensuring the accuracy of the cutting operation. Furthermore, the stable connection between the cutter holder 62 and the first drive component 61 makes the cutter 6 more stable during lifting, avoiding shaking or deviation during cutting, thus improving cutting quality. Finally, the design of the annular cutter 63's blade angled towards the center optimizes the cutting sharpness and effectively reduces the pressure on the dry paper tray during cutting, ensuring a smooth and even cut edge. These improvements collectively enhance the cutting efficiency and accuracy of the equipment, reduce the defect rate in the production process, and further improve overall production efficiency and product quality. In this embodiment, the annular cutter 63 can be a rectangular structure, capable of cutting the edges of rectangular paper trays. The annular cutter 63 has rounded corners at the bends of the rectangular ring, which can round the edges of the dry paper tray during cutting. During the processing of the annular cutter 63, the blade can be heated first, then stretched, bent at the bend using an arc-shaped mold, then cooled and shaped with cooling water, and finally welded at the seams, followed by polishing. Alternatively, the annular cutter 63 can be directly extruded into a single piece using a pre-formed mold.

[0039] In other embodiments, to remove burrs from the edges of the paper tray after trimming, the annular cutter 63 has a multi-textured abrasive strip surface at one end facing the cutter holder 62. The texture consists of wavy lines arranged in an array perpendicular to the trimming direction or a grid pattern arranged interlaced in the same direction. The wavy lines or grid pattern on the abrasive strip surface are primarily used to remove burrs from the cut surface after trimming. By rubbing the cut surface, residual burrs can be effectively removed, the trimming edge smoothed, and the cutting quality improved. The friction effect of the texture not only improves the smoothness of the cut surface and reduces roughness but also enhances the appearance and feel of the finished product. Furthermore, the abrasive strip surface applies uniform friction to the cut surface during cutting, which helps to further ensure the neatness and consistency of the trimming edge, reducing the complexity of subsequent processing and the need for manual finishing, thereby improving production efficiency and the overall quality of the finished product.

[0040] To ensure effective heating of the upper mold 22 and lower mold 32 by the drying component 5, the specific structure of the drying component 5 needs to be described. The drying component 5 includes a fourth driving component 51 and an annular heating column 52. The fourth driving component 51 is suspended from the top of the housing 1 and extends into the housing 1, capable of moving up and down along the axis of the housing 1. In this embodiment, the fourth driving component 51 and the second driving component 21 adopt the same structural design, and therefore will not be described in detail here. One end of the annular heating column 52 is provided with a fixing hole 522. The end of the fourth driving component 51 is inserted into the fixing hole 522 and fixedly connected to the fixing hole 522 by fasteners such as pins and bolts. The other end of the annular heating column 52 is provided with... Figure 3 The sliding block 53 shown has a slide rail 54 provided inside the housing 1 along the axial direction, and the sliding block 53 is placed on the slide rail 54 for sliding. In order to improve the stability of the sliding block 53 during sliding and avoid deformation caused by excessive force, refer to Figure 5A suspension hole 523 is provided on the annular heating column 52, and a telescopic rod A524 is fixed at the suspension hole 523. The telescopic rod A524 is suspended on the inner wall of the housing 1 and can extend and retract with the fourth driving component 51. The annular heating column 52 is hollow, and several U-shaped grooves 521 are arranged in a circular array at its center. An arc-shaped heating tube 55 is installed in any one of the U-shaped grooves 521. The tail ends of the arc-shaped heating tubes 55 are connected together and connected to the heating resistor circuit inside the annular heating column 52. The heating resistor is connected to an external power supply through the circuit. When heating and drying are required when the upper mold 22 and the lower mold 32 are pressed together, it is only necessary to connect the external power supply to the circuit of the arc-shaped heating tube 55 (at this time, the arc-shaped heating tube 55 is equivalent to the resistance heating wire in the prior art). The fourth driving component 51 can move up and down along the axis of the housing 1, so that the height of the annular heating column 52 can be accurately adjusted during the drying process to adapt to the needs of paper trays of different thicknesses and shapes, ensuring the uniformity and effect of heating. The fixed base of the annular heating column 52 is fixedly connected to the end of the fourth driving component 51, ensuring the stability of the heating column during lifting and lowering. The sliding design of the sliding block 53 on the slide rail 54 allows the annular heating column 52 to move smoothly, avoiding unnecessary friction and obstruction. The arc-shaped heating tube 55 inside the annular heating column 52 is connected to an external power source via an electrical circuit, providing efficient heating capacity and ensuring rapid and uniform heating of the paper tray during the drying process, thus improving the drying effect. The overall design optimizes the heating process, reduces energy consumption, improves production efficiency, and also ensures the quality and stability of the paper tray after forming.

[0041] In another embodiment, in order to effectively prevent the debris cut off by the cutter 6 from entering the pulp box 4 when it cuts the edge of the paper tray, the following structure is designed: refer to Figure 6A fifth driving component 8 is connected to the bottom of the pulp box 4. The fifth driving component 8 is fixed to the bottom of the housing 1 and can move up and down relative to the housing 1. The fifth driving component 8 is an electric push rod, which is arranged adjacent to the third driving component 31 and will not interfere with the lifting and lowering movement of the lower mold 32. The working principle of this electric push rod is the same as that of the electric push rod of the second driving component 21, so it will not be described in detail here. A baffle plate 9 is provided inside the housing 1. When the pulp box 4 is against the baffle plate 9, the middle part of the baffle plate 9 can be gradually opened. The baffle plate 9 has a passage hole for the lifting and lowering of the third driving component 31 of the cutter 6. When hot pressing is required, the pulp box 4 rises to abut against the baffle plate 9. At this time, the baffle plate 9 is opened, the lower mold 3 rises and then falls until the upper mold 2 and the lower mold 3 are pressed together. The drying component 5 descends to the pressed position to dry the upper mold 2 and the lower mold 3, ultimately forming a dry paper tray. When it is necessary to trim the dry paper tray, the drying component 5 rises to disengage from the pressed position, the lower mold 3 descends to separate from the upper mold 2, the pulp box 4 descends to close the middle of the baffle plate 9, and the cutter 6 rises from the receiving groove 34 to trim the dry paper tray. When the pulp box 4 abuts against the baffle plate 9, the middle of the baffle plate 9 gradually opens, leaving a passage for the cutter 6 to rise and fall. This design allows the upper and lower mold parts 3 to be pressed together and processed by the drying part 5 during hot pressing to form a dry paper tray. During edge trimming, the drying part 5 rises, the pulp box 4 descends to close the baffle plate 9, and the cutter part 6 rises to trim the dry paper tray. The baffle plate 9 can block paper tray debris during edge trimming, preventing it from entering the pulp box 4. Specifically, the fixed ends of the fifth drive part 8 and the third drive part 31 are directly fixed to the fixing plate 10 by bolts, and the fixing plate 10 is directly welded to the inner wall of the housing 1. The fixing plate 10 provides fixed support for the fifth drive part 8 and the third drive part 31, and the stroke of the third drive part 31 is greater than that of the fifth drive part 8.

[0042] In this invention, the first driving component 61, the second driving component 21, the third driving component 31, the fourth driving component 51, and the fifth driving component 8 in the accompanying drawings are all examples of electric push rods, used to explain their positional and connection relationships in the drawings. However, the first driving component 61, the second driving component 21, the third driving component 31, the fourth driving component 51, and the fifth driving component 8 in this invention are not limited to electric push rods.

[0043] In the above embodiment, the baffle 9 includes two semi-circular baffles. One end of each semi-circular baffle near the inner wall of the housing 1 has a hinge end 91, which allows the semi-circular baffle to bend at a maximum angle of 90°. One end of each semi-circular baffle is fixedly connected to the inner wall of the housing 1. The baffle 9 is used to prevent debris from entering the pulp box 4. The system is configured to stop moving when the pulp box 4 lifts the baffle 9 to its maximum angle of 90°. This process can be achieved by detecting the angle position using an angle sensor, which then transmits the signal to the system. The system compares the preset data value with the detected data value. When the maximum angle of 90° is reached, the angle sensor sends a data signal back to the system, which then disconnects the current path of the fifth driving component 8 based on this data signal.

[0044] In some embodiments, the fixed ends of the baffle 9 and the inner wall of the housing 1 are inclined, so that the debris can flow through the inclined conical surface to the area of ​​the housing 1 near the inner wall, thereby preventing the debris from entering the pulp box 4 during the opening and closing of the baffle 9.

[0045] In some embodiments, a transfer window 11 is provided on the housing 1 at the position where the upper mold 2 and lower mold 3 are pressed together. The transfer window 11 provides a transfer channel for the paper tray after trimming. A robotic arm can be installed on this transfer channel. After the dry paper tray has been trimmed, the robotic arm extends into the transfer channel, directly clamps the dry paper tray, and then the paper tray is removed from the upper mold 22 by shutting off the suction system. Subsequently, the robotic arm directly picks up the trimmed paper tray. The design of the transfer channel can efficiently transfer the trimmed paper tray from the processing area to the subsequent processing area, reducing manual intervention and transportation time, improving the automation level and work efficiency of the production line, and ensuring the smoothness of the production process and timely delivery of products. The transfer window 11 can serve multiple purposes, including as a channel for transporting the trimmed paper tray, replenishing pulp to the pulp box 4 (requiring a hose to be inserted into the pulp box 4 for filling), and even using a vacuum cleaner to remove debris located on the baffle plate 9.

[0046] In the description of this invention, it should be understood that the terms "top", "bottom", "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", "radial", "axial direction", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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 limiting this invention.

[0047] It should be noted that, in this invention, the outer shell of the "driving component" is fixed in a designated position by fasteners such as bolts, pins, and latches, while the execution unit (telescopic rod, lifting rod, etc.) of the "driving component" can be raised, lowered, or retracted.

[0048] 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.

[0049] 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 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.

[0050] 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 hot pressing and edge cutting integrated machine, characterized in that, include: case; The upper module extends from the outer surface of the housing into the housing and can move up and down along the axial direction of the housing; The lower mold is positioned opposite the upper mold and can be pressed together with the upper mold; A pulp box is located inside the housing, and the lower mold is located inside the pulp box and can move up and down relative to the pulp box. The drying component is attached to the inner wall of the housing. When the drying component slides to the position where the upper mold part presses against the lower mold part, it can heat the wet paper tray. The cutter has a groove at one end of the lower mold facing the upper mold. The cutter is placed in the receiving groove and can move up and down relative to the receiving groove. When the wet paper tray is heated to form a dry paper tray, the cutter can extend out of the receiving groove to cut the edge of the dry paper tray. The drying component includes: The fourth drive unit is suspended at the top of the housing and extends into the housing, and can move up and down along the axis of the housing. An annular heating column has a fixed base at one end, the end of the fourth driving member is fixed to the fixed base, and a sliding block is provided at the other end of the annular heating column. The housing is provided with a slide rail along the axial direction, and the sliding block is placed on the slide rail to slide. The inner cavity of the annular heating column is provided with several arc-shaped heating tubes, which are connected to an external power source via a circuit.

2. The integrated hot pressing and trimming machine for paper trays according to claim 1, characterized in that, The cutting component includes: A first driving member is disposed on the outer surface of the lower mold member. The lower mold member has a lifting groove perpendicular to the receiving groove. The first driving member can extend into the lifting groove and move toward the receiving groove. The tool holder is fixedly connected to the first driving component, which can drive the tool holder to move up and down. A ring cutter is fixed on a cutter holder and has a cutting edge that is inclined toward the center of the ring cutter.

3. The integrated hot pressing and trimming machine for paper trays according to claim 2, characterized in that, The annular cutter has a multi-textured sanding strip surface at one end facing the cutter holder. The texture is either a wavy line texture arrayed along the direction perpendicular to the cutting edge or a grid-like texture arranged alternately along the direction perpendicular to the cutting edge.

4. The integrated hot pressing and trimming machine for paper trays according to claim 1, characterized in that, The upper module includes: The second driving component is suspended along the axial direction of the housing; The upper mold is fixed to the bottom of the second driving component. The upper mold has a convex cavity at one end facing the lower mold. The convex cavity has several first air holes. The first air holes are connected to an external suction pump through a pipeline to adsorb the dried paper tray after it has been formed.

5. The integrated hot pressing and trimming machine for paper trays according to claim 4, characterized in that, The convex cavity is provided with a clearance groove at a position relative to the receiving groove, and the cutting component can extend into the clearance groove to avoid the cutting component from colliding with the convex cavity and deforming the cutting component.

6. The integrated hot pressing and trimming machine for paper trays according to claim 1, characterized in that, The lower mold includes: The third driving component is installed on the pulp box and can move up and down relative to the pulp box. The pulp box and the third driving component are sealed together by an elastic sealing element. The lower mold is fixed to the top of the third driving component. The lower mold has a concave cavity at one end facing the upper mold. The concave cavity has several second air holes. The second air holes are connected to an external suction pump through a pipeline for adsorbing the dried paper tray after molding. The receiving groove is located on the edge of the concave cavity.

7. The integrated hot pressing and trimming machine for paper trays according to claim 1, characterized in that, The bottom of the pulp box is connected to a fifth driving component, which is fixed to the bottom of the housing and can be raised and lowered relative to the housing. The housing is equipped with a baffle plate. When the pulp box is against the baffle plate, the middle part of the baffle plate can be gradually opened. The baffle plate is reserved with a passage for the lifting and lowering of the cutter. When hot pressing is required, the pulp box rises and touches the baffle plate. At this time, the baffle plate is opened, the lower mold rises and falls until the upper mold and the lower mold are pressed together. The drying part is lowered to the pressed position and the upper mold and the lower mold are dried to finally form a dry paper tray. When it is necessary to trim the dry paper tray, the drying component rises and disengages from the pressing position, the lower mold component descends and separates from the upper mold component, the pulp box descends to close the middle of the baffle plate, and the cutter component rises from the receiving groove to trim the dry paper tray.

8. The integrated hot pressing and trimming machine for paper trays according to claim 7, characterized in that, The baffle includes two semi-circular baffles, each with a hinged end in the middle. The hinged end allows the semi-circular baffle to bend, with a maximum bending angle of 90°. The end of the semi-circular baffle away from the middle is fixedly connected to the inner wall of the housing. The baffle is used to prevent debris from entering the pulp box.

9. The integrated hot pressing and trimming machine for paper trays according to claim 1, characterized in that, The housing is provided with a transfer window at the position where the upper and lower molds are pressed together, and the transfer window provides a transfer channel for the paper tray after the edge is cut.

Images