A hot-pressing laminating device for producing paper honeycomb pallets

Abstract

This utility model discloses a hot-pressing laminating device for producing paper honeycomb pallets, including a base. A transmission cavity is formed at the upper end of the base, and a threaded rod is rotatably mounted inside the transmission cavity. Two movable seats are threadedly connected to the external side of the threaded rod. A lower mold is mounted on the upper end of each movable seat, and the lower mold slides in engagement with the base. A cooling box is located at the middle of the upper end of the base. Four support rods are welded to both sides of the upper end of the base, and a top cover is mounted on the upper end of each support rod. A hot-pressing cylinder is mounted on the upper end of the top cover, and a lifting seat is located at the output end of the hot-pressing cylinder. This hot-pressing laminating device for producing paper honeycomb pallets cools the paper honeycomb pallets through contact between cold air and the pallets, significantly shortening the time required for the pallets to cool to a safe operating temperature. Simultaneously, it achieves the synchronous execution of the hot-pressing laminating and cooling processes, greatly increasing production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of paper honeycomb pallet production technology, specifically a hot-pressing composite device for paper honeycomb pallet production. Background Technology

[0002] Paper honeycomb pallets are environmentally friendly pallets made of honeycomb cardboard and paper corners. They are mainly used to replace traditional wooden pallets for carrying export goods. Originating from bionics, they mimic the hexagonal structure of a honeycomb and are characterized by light weight, high strength, good toughness, resistance to deformation, pressure resistance, impact resistance, shock absorption, heat insulation, and sound insulation. Paper honeycomb pallets are green and environmentally friendly, 100% recyclable, produce no waste, and do not pollute the environment. After use, they can be directly sent to paper mills for recycling, meeting environmental protection requirements. They also have advantages such as cleanliness, smoothness, sturdiness, and lightweight convenience. They are suitable for fast-paced mechanical operations in container transportation, maximizing the protection of the packaged goods, facilitating handling, and reducing transportation costs. In the production process of paper honeycomb pallets, the hot-pressing composite device can quickly and efficiently heat the material through upper and lower molds, improving product quality and production speed.

[0003] Chinese Patent No. CN217293744U discloses a hot pressing device for producing multi-layer composite environmentally friendly corrugated cardboard, including a conveying platform, a heating plate, a pressing device, and a controller. The conveying platform has grooves a at both ends of its upper surface, a groove b in the middle of its upper surface, and support rods vertically fixed at the four corners of its lower surface. Multiple drive rollers are rotatably arranged from left to right inside the grooves a, with the upper ends of the drive rollers protruding outside the grooves a. Protective plates are provided on both sides of the opening of the grooves a. The heating plate has its lower end fixed inside the groove b, and its upper end protruding outwards outside the groove b. The pressing device is located to the upper right of the heating plate and includes a support plate, a fixed cross plate, a middle connecting plate, and a pressing roller.

[0004] While the above-mentioned solution can achieve hot pressing, the temperature of the paper honeycomb pallet after hot pressing is relatively high. If it is removed directly, there is a risk of burns to the operator. If it is removed after a period of time, it will affect the efficiency of production and processing. Therefore, it does not meet the current needs. To address this, we propose a hot pressing lamination device for the production of paper honeycomb pallets. Utility Model Content

[0005] The purpose of this utility model is to provide a hot-pressing composite device for the production of paper honeycomb pallets, so as to solve the problem that the high temperature of the paper honeycomb pallets after production by the hot-pressing composite device mentioned in the background art makes it inconvenient to remove and affects the production efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hot-pressing composite device for producing paper honeycomb pallets, comprising a base, a transmission cavity being provided at the upper end of the base, a threaded rod being rotatably provided inside the transmission cavity, two movable seats being threadedly connected to the outside of the threaded rod, a lower mold being provided at the upper end of each movable seat, and the lower mold being slidably engaged with the base, and a cooling box being provided at the middle position of the upper end of the base.

[0007] Preferably, four support rods are welded to both sides of the upper end of the base. A top cover is provided at the upper end of the support rods. A hot press cylinder is installed at the upper end of the top cover. A lifting seat is provided at the output end of the hot press cylinder. The lifting seat is penetrated by the support rods and slides with the support rods. An upper mold is provided at the lower end of the lifting seat and the upper mold is adapted to the lower mold.

[0008] Preferably, a buffer spring is fitted on the upper side of the support rod, one end of the buffer spring is connected to the top cover, and the other end of the buffer spring is connected to the lifting seat.

[0009] Preferably, a motor is provided on one side of the base, and the output end of the motor is connected to the threaded rod via a coupling.

[0010] Preferably, guide rods are welded to both the front and rear sides of the transmission cavity, and the guide rods all penetrate the movable seat and slide in cooperation with the movable seat.

[0011] Preferably, a refrigeration unit is installed on one side of the upper end of the cooling box, and an air intake unit is installed on the other side of the upper end of the cooling box. A cooling chamber is opened at the upper end of the interior of the cooling box, and the air intake unit is connected to the cooling chamber and the refrigeration unit through connecting pipes.

[0012] Preferably, the lower end of the cooling cavity is provided with a plurality of through holes arranged in a rectangular array.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model features a cooling box located at the center of the upper part of the base, with a refrigeration unit on one side of the upper part of the cooling box. After the hot-pressing and lamination of the paper honeycomb tray is completed, the lower mold is moved into the interior of the cooling box. The suction fan is activated to deliver the cold air generated by the refrigeration unit into the interior of the cooling chamber. The cooling chamber blows air into the lower mold through several through holes arranged in a rectangular array. This achieves cooling of the paper honeycomb tray through contact between the cold air and the paper honeycomb tray, significantly shortening the time for the tray to cool to a safe operating temperature. This direct contact cooling method not only improves cooling efficiency but also ensures that the temperature of each part of the tray drops uniformly, avoiding problems such as tray deformation or uneven performance caused by temperature differences.

[0015] 2. This utility model has a transmission cavity at the upper end of the base. When the motor is started, the threaded rod can rotate, which will drive the two moving seats to move synchronously and in the same direction. This allows the paper honeycomb tray in one lower mold to be cooled, while the paper honeycomb tray in the other lower mold is hot-pressed and laminated. This achieves the synchronous execution of the hot-pressing and cooling processes, which greatly increases the efficiency of production and processing. Since the hot-pressing and cooling processes can be seamlessly connected, the waiting time is reduced, making the entire production process smoother.

[0016] 3. This utility model incorporates buffer springs fitted on the upper side of the support rod. When the hot-pressing cylinder moves the lifting seat downward, the buffer springs are stretched. This stretching generates a force opposite to the downward movement of the lifting seat. This reaction force effectively slows down the downward movement of the upper mold at the lower end of the lifting seat. In this way, the impact force during the hot-pressing process is effectively buffered, absorbing some kinetic energy. This significantly reduces the impact force when the upper and lower molds come into contact, making the hot-pressing process more stable. This helps ensure uniform stress distribution on the paper honeycomb tray during hot-pressing, thereby improving the product yield and quality stability. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a front view schematic diagram of the internal structure of this utility model;

[0019] Figure 3 This is a top view of the upper structure of the base of this utility model;

[0020] Figure 4 For the present utility model Figure 2 Enlarged view of a portion of region A in the middle.

[0021] In the diagram: 1. Base; 2. Cooling box; 3. Refrigeration unit; 4. Air intake unit; 5. Connecting pipe; 6. Cooling chamber; 7. Through hole; 8. Support rod; 9. Top cover; 10. Hot press cylinder; 11. Lifting seat; 12. Buffer spring; 13. Lower mold; 14. Upper mold; 15. Transmission chamber; 16. Threaded rod; 17. Guide rod; 18. Moving seat; 19. Motor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution: a hot pressing composite device for producing paper honeycomb pallets, including a base 1, a transmission cavity 15 is provided at the upper end of the base 1, a threaded rod 16 is rotatably provided inside the transmission cavity 15, and two movable seats 18 are threadedly connected to the outside of the threaded rod 16. A lower mold 13 is provided at the upper end of each movable seat 18, and the lower mold 13 is slidably engaged with the base 1. A cooling box 2 is provided at the middle position of the upper end of the base 1.

[0024] In use, the raw material is placed on the lower mold 13 and the hot pressing cylinder 10 is activated. Its output end drives the lifting seat 11 and the upper mold 14 to move down and dock with the lower mold 13 for hot pressing. During this process, the buffer spring 12 is stretched, which effectively reduces the impact force when the upper mold 14 contacts the lower mold 13, ensuring a smooth hot pressing process. After hot pressing is completed, the motor 19 is activated, which drives the threaded rod 16 to rotate through the coupling, causing the moving seat 18 to slide along the guide rod 17 to achieve horizontal movement. The moving seat 18 moves the lower mold 13 into the cooling box 2. At the same time, the refrigeration machine 3 generates cold air, which is sent into the cooling chamber 6 through the suction machine 4 and the connecting pipe 5. The cold air contacts the paper honeycomb tray through the through hole 7 to achieve rapid cooling. At this time, the other lower mold 13 moves to the working position to prepare for the next round of hot pressing, realizing the simultaneous hot pressing and cooling, which greatly improves production efficiency.

[0025] Please see Figure 1 , Figure 2 and Figure 3 Four support rods 8 are welded to both sides of the upper end of the base 1. A top cover 9 is provided at the upper end of the support rods 8. A hot press cylinder 10 is installed at the upper end of the top cover 9. A lifting seat 11 is provided at the output end of the hot press cylinder 10. The lifting seat 11 is penetrated by the support rods 8 and is slidably engaged with the support rods 8. An upper mold 14 is provided at the lower end of the lifting seat 11 and is adapted to the lower mold 13. The support rods 8 stably support the entire hot press structure. The top cover 9 at its upper end provides a solid installation foundation for the hot press cylinder 10, ensuring the stability and safety of the hot press process, and facilitating the maintenance and adjustment of the hot press cylinder 10.

[0026] Please see Figure 1 and Figure 2Each of the support rods 8 is fitted with a buffer spring 12 on its upper side. One end of each buffer spring 12 is connected to the top cover 9, and the other end of each buffer spring 12 is connected to the lifting seat 11. When the lifting seat 11 moves down, the buffer spring 12 can absorb the impact force and slow down the speed when the upper mold 14 and the lower mold 13 come into contact, effectively protecting the mold and extending its service life.

[0027] Please see Figure 2 A motor 19 is provided on one side of the base 1, and the output end of the motor 19 is connected to the threaded rod 16 through a coupling. The motor 19 can drive the threaded rod 16 to rotate, thereby driving the movable seat 18 to slide along the guide rod 17, realizing the automatic movement of the lower mold 13 and improving production efficiency.

[0028] Please see Figure 3 Guide rods 17 are welded to the front and rear sides of the transmission cavity 15. The guide rods 17 all pass through the movable seat 18 and slide with the movable seat 18, which ensures the stability of the movable seat 18 during movement, prevents the movable seat 18 from shifting or shaking during movement, and ensures the accuracy of the hot pressing and cooling process.

[0029] Please see Figure 1 and Figure 2 A refrigeration unit 3 is installed on one side of the upper end of the cooling box 2, and an air suction unit 4 is installed on the other side of the upper end of the cooling box 2. A cooling chamber 6 is opened at the upper end of the interior of the cooling box 2. The air suction unit 4 is connected to the cooling chamber 6 and the refrigeration unit 3 through a connecting pipe 5. The cold air generated by the refrigeration unit 3 can quickly enter the cooling chamber 6 through the air suction unit 4 and the connecting pipe 5 to quickly cool down the paper honeycomb tray after hot pressing and lamination, thereby improving production efficiency.

[0030] Please see Figure 4 The lower end of the cooling chamber 6 has several through holes 7 arranged in a rectangular array. The cold air can flow out evenly from the through holes 7 and make full contact with the paper honeycomb tray below, achieving a rapid and uniform cooling effect and ensuring product quality.

[0031] Working Principle: During use, the raw material for the paper honeycomb pallet is added to one of the lower molds 13. The hot press cylinder 10 is activated, and its output end drives the lifting seat 11 to move downwards. Simultaneously, the upper mold 14 at the lower end of the lifting seat 11 moves downwards to engage with the lower mold 13 for hot press composite processing. The downward movement of the lifting seat 11 stretches the buffer spring 12, generating a counterforce that significantly reduces the impact force when the upper mold 14 contacts the lower mold 13. This makes the hot press process smoother, helping to ensure uniform stress on the paper honeycomb pallet during hot press composite, thereby improving the product yield and quality stability. After the hot press composite of the paper honeycomb pallet is completed, the motor 19 is activated. The motor 19 rotates the threaded rod 16 via a coupling. The threaded rod 16 drives the two moving seats 18 to rotate synchronously. Since the moving seats 18 are slidably engaged with the guide rod 17, they are axially limited. The rotation of the moving base 18 is converted into horizontal linear movement in the same direction. The movement of the moving base 18 will drive the lower mold 13 to move synchronously, so that one of the lower molds 13 can move the hot-pressed paper honeycomb tray into the interior of the cooling box 2. The suction machine 4 and the refrigeration machine 3 are started. The refrigeration machine 3 will generate cold air. The suction machine 4 will transport the generated cold air to the interior of the cooling chamber 6 through the connecting pipe 5. After entering the cooling chamber 6, the cold air will continue to flow downward through the through hole 7, so that it can contact the paper honeycomb tray that has moved in below. The paper honeycomb tray is cooled down by contact between the cold air and the paper honeycomb tray, which greatly shortens the time for the tray to cool down to the safe operating temperature. While cooling is in progress, the other lower mold 13 will move below one of the lower molds 13, so that the hot pressing and lamination of the paper honeycomb tray can be restarted. The hot pressing and lamination and cooling processes are synchronized, which greatly increases the efficiency of production and processing.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A hot-pressing composite device for producing paper honeycomb pallets, comprising a base (1), characterized in that: The upper end of the base (1) is provided with a transmission cavity (15), and a threaded rod (16) is rotatably provided inside the transmission cavity (15). The threaded rod (16) is connected to two movable seats (18) by external threads. The upper end of each movable seat (18) is provided with a lower mold (13), and the lower mold (13) slides with the base (1). A cooling box (2) is provided at the middle position of the upper end of the base (1). Four support rods (8) are welded to both sides of the upper end of the base (1). A top cover (9) is provided at the upper end of the support rod (8). A hot press cylinder (10) is installed at the upper end of the top cover (9). A lifting seat (11) is provided at the output end of the hot press cylinder (10). The lifting seat (11) is penetrated by the support rod (8) and the lifting seat (11) is slidably engaged with the support rod (8). An upper mold (14) is provided at the lower end of the lifting seat (11), and the upper mold (14) is adapted to the lower mold (13). Each of the support rods (8) is fitted with a buffer spring (12) on its upper side. One end of each buffer spring (12) is connected to the top cover (9), and the other end of each buffer spring (12) is connected to the lifting seat (11). A refrigeration unit (3) is installed on one side of the upper end of the cooling box (2), and an air intake unit (4) is installed on the other side of the upper end of the cooling box (2). A cooling chamber (6) is opened at the upper end of the interior of the cooling box (2). The air intake unit (4) is connected to the cooling chamber (6) and the refrigeration unit (3) through a connecting pipe (5). The lower end of the cooling cavity (6) is provided with several through holes (7) arranged in a rectangular array.

2. The hot-pressing composite device for producing paper honeycomb pallets according to claim 1, characterized in that: A motor (19) is provided on one side of the base (1), and the output end of the motor (19) is connected to the threaded rod (16) via a coupling.

3. The hot-pressing composite device for producing paper honeycomb pallets according to claim 1, characterized in that: Guide rods (17) are welded to the front and rear sides of the transmission cavity (15). The guide rods (17) all pass through the movable seat (18) and slide with the movable seat (18).

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