Hot indentation device for hollow plate

Abstract

The utility model relates to a hollow plate hot mark pressing device which is suitable for the field of hollow plate processing. The device comprises a support, two hot-pressing rollers rotating relatively are arranged on the support, a plurality of protruding annular hot-pressing teeth are evenly distributed on the hot-pressing rollers in the radial direction, a hot-pressing mark channel is formed, a motor drives a chain to conduct transmission, continuous machining of the hollow plate is achieved, and efficiency is improved. The hot-pressing roller is hollow to form a heat-conducting oil cavity, the hollow rotating shaft serves as an oil inlet and outlet channel, heat-conducting oil is circularly heated under the action of the conveying pump, the temperature is maintained at 180-220 DEG C, and it is ensured that the indentation quality is stable. A protective shell is arranged at the top of the device, and a feeding port and a discharging port are provided with height-adjustable L-shaped pressing plates, so that the device is suitable for plates with different thicknesses. According to the device, by optimizing the structural design, efficient and accurate hot-pressing mark machining is achieved, the machining quality of the hollow plate is remarkably improved, the service life of the hollow plate is remarkably prolonged, the production cost is reduced, and good market application prospects are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of hollow board processing technology, and in particular relates to a hot indentation device for hollow boards. Background Technology

[0002] Hollow core boards are widely used in packaging, logistics, construction, agriculture, and other fields due to their lightweight, high strength, corrosion resistance, and ease of processing. In actual processing, to meet the requirements of folding, shaping, and assembly, hollow core boards typically need to be creasing. Traditional creasing methods often use direct mechanical pressing, applying pressure to the board using rollers or molds to create creases.

[0003] However, this mechanical creasing method has many problems: On the one hand, during the mechanical creasing process, the contact pressure between the pressure roller or die and the hollow board is difficult to control precisely, which can easily lead to uneven stress on the board, resulting in inconsistent creasing depth, board deformation, or even damage. On the other hand, when the mechanically creasing hollow board is folded, stress concentration at the crease can easily cause cracks or breaks, seriously affecting the product's service life and reliability. In addition, the folding effect of mechanical creasing is not ideal; the flatness and angle of the crease are difficult to guarantee, making it difficult to meet the requirements of high-quality processing. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] To overcome the above shortcomings, the purpose of this utility model is to provide a hot indentation device for hollow plates to solve the above technical problems.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the technical solution provided in this application is as follows:

[0008] A hot stamping device for hollow boards includes a support frame with two opposing rotating hot stamping rollers. Each hot stamping roller has a plurality of hot stamping teeth evenly arranged radially, protruding from the rollers and forming annular shapes. A protective shell is provided on the top of each roller, with an inlet and an outlet at the front and rear ends of the shell, respectively. Height-adjustable pressure plates are provided on the inlet and outlet. The inlet is connected to an inlet guide unit, and an outlet guide roller is provided at the outlet.

[0009] Preferably, the interior of the hot press roller is hollow to form a heat-conducting oil cavity, the rotating shaft of the hot press roller is hollow to form an oil inlet channel and an oil outlet channel, the rotating shaft is connected to the oil inlet pipe or the oil outlet pipe through a rotating shaft bearing, a skeleton oil seal is provided between the rotating shaft and the rotating shaft bearing, the oil inlet pipe is connected to the oil outlet of the heat-conducting oil storage mechanism, the oil outlet pipe is connected to the oil inlet of the heat-conducting oil storage mechanism, and a heating unit is provided inside the heat-conducting oil storage mechanism.

[0010] Preferably, the temperature of the heat transfer oil outlet is 180-220℃.

[0011] Preferably, the pressure plate is L-shaped, and the pressure plate has a vertically elongated hole. The protective shell has mounting holes corresponding to the elongated holes, and the mounting holes and the elongated holes are provided with first mounting bolts.

[0012] Preferably, the feeding guide unit includes a support plate, and the support plate is provided with adjustable width transverse guide components on both sides. A pressure roller is provided between the transverse guide components and the feeding port. The pressure roller is rotatably mounted on the pressure base. The pressure base is installed on the elongated hole of the mounting bracket by bolts.

[0013] Preferably, the transverse guide assembly includes a guide plate and a movable mounting plate, the guide plate and the movable mounting plate are vertically arranged, the guide plate and the movable mounting plate are connected by a connecting plate, the movable mounting plate is provided with a movable hole, the movable hole is fitted onto a mounting bolt, a compression spring is provided between the movable mounting plate and the side of the support plate, and a movable nut is provided on the side of the movable mounting plate away from the support plate.

[0014] Beneficial effects:

[0015] 1. Improved indentation quality: The hot indentation device applies pressure to the hollow board through heated hot rollers, causing the board to form indentations in a thermoplastic state. It can more evenly control the depth and width of the indentation, avoiding the problems of board damage and uneven creases caused by uneven force in traditional mechanical indentation, thus significantly improving the quality of indentation.

[0016] 2. Enhanced product lifespan: Because hot indentation can form more uniform creases in the thermoplastic state of the board, it reduces stress concentration at the creases, thereby effectively reducing the risk of cracking and breakage of hollow boards during folding and use, and significantly improving the product's lifespan and reliability.

[0017] 3. Optimized folding effect: The creases formed by heat pressing have better flexibility and flatness, which makes the hollow board fold more smoothly, the folding angle more precise, and the appearance after folding more beautiful, thus meeting the appearance and functional requirements of high-quality processing.

[0018] 4. Improved processing efficiency: By optimizing the structure of the hot pressing roller and the heating system, the hot indentation device can achieve rapid and uniform heating, shorten processing time, improve production efficiency, and reduce rework rate caused by poor indentation, further enhancing overall production efficiency.

[0019] 5. High adaptability: This device, through its adjustable pressure plate and hot roller temperature control system, can adapt to hollow boards of different thicknesses and materials, meeting diverse processing needs and having wide applicability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a structural diagram of a hot press roller according to one embodiment of the present invention;

[0022] Figure 3 This is a top view of a feeding guide unit according to one embodiment of the present utility model;

[0023] Figure 4 This is a structural diagram of a transverse guide component according to one embodiment of the present invention. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the following description, in conjunction with specific embodiments and the appendix, provides further details. Figure 1-4 The present invention will be described in further detail below. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the present invention.

[0025] This utility model provides a hot indentation device for hollow boards, including a support 5. Two opposing rotating hot pressure rollers 6 are mounted on the support 5. Each hot pressure roller 6 has a plurality of radially evenly arranged hot pressure teeth 7, which protrude from the roller and are annular in shape. The annular design and uniform distribution of the hot pressure teeth 7 ensure the accuracy and consistency of the indentation, avoiding the inconsistent indentation caused by uneven rollers in traditional mechanical indentation. The hot pressure teeth 7 of the two hot pressure rollers 6 are arranged opposite each other. The hollow board passes between the two rollers. When the rollers rotate relative to each other, they move the hollow board forward. The rollers are driven by a chain via a motor. The opposing hot pressure teeth 7 of the two rollers form a hot indentation channel. The height of the hot indentation channel is lower than the thickness of the hollow board. As the hollow board moves forward, a hot indentation is formed, improving work efficiency.

[0026] Preferably, the interior of the hot press roller 6 is hollow to form a heat-conducting oil cavity, and the rotating shaft 14 of the hot press roller 6 is hollow to form an oil inlet channel and an oil outlet channel. The rotating shaft 14 is connected to the oil inlet pipe 13 or the oil outlet pipe 15 through a rotating shaft bearing. A skeleton oil seal is provided between the rotating shaft 14 and the rotating shaft bearing. The design of the skeleton oil seal effectively prevents the leakage of heat-conducting oil and improves the safety and reliability of equipment operation.

[0027] The oil inlet pipe 13 is connected to the oil outlet of the heat transfer oil storage mechanism, and the oil outlet pipe 15 is connected to the oil inlet of the heat transfer oil storage mechanism. A heating unit is installed inside the heat transfer oil storage mechanism. The temperature of the heat transfer oil outlet is 180-220℃. This temperature range ensures that the hollow board forms ideal indentations in its thermoplastic state, while avoiding deformation or damage to the board due to excessive temperature. Precise temperature control ensures uniform depth and width of the indentations, improving the overall quality of the product.

[0028] The heat transfer oil enters the heat transfer oil chamber of the hot press roller 6 through the oil outlet of the heat transfer oil storage mechanism and is connected to the rotating shaft 14 through the oil inlet pipe under the action of the delivery pump. This raises the overall temperature of the hot press roller and heats the hot press teeth 7 through heat transfer. The heat transfer oil in the heat transfer oil chamber continuously enters the heat transfer oil storage mechanism through the oil outlet pipe 15 for reheating to ensure the temperature of the hot press roller.

[0029] The heat transfer oil circulation heating system ensures uniform surface temperature of the hot press roller, preventing localized overheating or undercooling, thus guaranteeing stable indentation quality. The circulation of heat transfer oil improves thermal energy utilization efficiency, reduces energy waste, and lowers production costs.

[0030] The top of the hot press roller 7 is equipped with a protective shell 12, which effectively prevents accidents that may occur during the hot pressing process and protects the safety of the operators. The protective shell 12 has an inlet 1 and an outlet 10 at its front and rear ends, respectively. The inlet 1 and outlet 10 are equipped with height-adjustable pressure plates 10. The pressure plates 10 are L-shaped and have vertically elongated holes. The protective shell 12 has mounting holes corresponding to these elongated holes, and first mounting bolts 11 are installed on both the mounting holes and the elongated holes. The height-adjustable pressure plates can be adjusted according to the thickness of the hollow boards, ensuring the stability of the boards during feeding and discharging and preventing displacement. Furthermore, the pressure plates effectively prevent the hollow boards from warping during hot pressing. The L-shaped pressure plate and elongated holes, combined with the mounting bolts, make the installation and adjustment of the pressure plates more convenient and quick, improving the operability and maintainability of the equipment.

[0031] The feed inlet 1 is connected to the feed guide unit, and the discharge outlet 10 is provided with a discharge guide roller 8.

[0032] Preferably, the feeding guide unit includes a support plate 4, with adjustable-width transverse guide components on both sides of the support plate 4. A pressure roller 6 is provided between the transverse guide components and the feed inlet 1. The pressure roller 6 is rotatably mounted on a pressure base, which is bolted to the elongated hole of the mounting bracket 4. The design of the pressure roller reduces friction of the hollow board during the feeding process, extends the service life of the board, and reduces wear on the equipment. The adjustable height of the pressure roller makes it more suitable for hollow boards of different thicknesses.

[0033] Preferably, the lateral guide assembly is designed to be suitable for hollow boards of different widths, ensuring that the center of the hollow board and the center of the hot press roller are aligned during feeding. The lateral guide assembly includes a guide plate 3 and a movable mounting plate 20, which are vertically arranged and connected by a connecting plate 17. The movable mounting plate 20 has a movable hole that is fitted onto a mounting bolt 19. A compression spring 21 is provided between the movable mounting plate 20 and the side of the support plate, and a movable nut 18 is provided on the side of the movable mounting plate 20 away from the support plate 4.

[0034] When the distance between the two lateral guide components needs to be adjusted, the moving nut is turned, which causes the moving mounting plate to move inward or outward. The compression spring continuously pushes the moving mounting plate outward. Under the action of the compression spring and the moving nut, the moving mounting plate remains stable, thus ensuring the stability of the guide plate. It is also easy to adjust, as only one nut needs to be turned, which improves work efficiency.

[0035] During operation, adjust the height of the pressure plate and the width of the transverse guide assembly according to the size of the hollow board. Then, turn on the heating unit to heat the heat transfer oil to 180-220℃, and start the delivery pump to circulate the heat transfer oil within the hot press rollers, increasing the roller temperature. Place the hollow board in the feeding guide unit, and the worker pushes the front end of the hollow board between the two hot press rollers. Through the transverse guide assembly and pressure rollers, the board is precisely positioned and friction is reduced, allowing it to smoothly enter the hot indentation channel formed by the hot press rollers. The hot press teeth evenly indent the board. The processed hollow board is then output through the discharge guide rollers. After processing is complete, the equipment is shut down and maintenance and cleaning are performed.

[0036] This device employs a hot-pressing toothed ring design and a heat-conducting oil circulation heating system to ensure precise indentation and uniform temperature, significantly improving indentation quality and stability, reducing the risk of sheet damage, and extending product lifespan. Its height-adjustable pressure plate, width-adjustable lateral guide assembly, and continuous processing mode adapt to various sheet specifications, improving processing efficiency and ease of operation. Simultaneously, the protective shell design enhances equipment safety, reduces energy waste, and meets the demands for efficient and precise processing.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hot indentation device for a hollow plate, characterized in that, The device includes a support frame with two opposing rotating hot press rollers. Each hot press roller has a plurality of hot press teeth evenly arranged radially, protruding from the hot press roller and forming a ring shape. The top of the hot press roller is provided with a protective shell, and the front and rear ends of the protective shell are respectively provided with a feed inlet and a discharge outlet. The feed inlet and the discharge outlet are provided with height-adjustable pressure plates. The feed inlet is connected to a feed guide unit, and the discharge outlet is provided with a discharge guide roller.

2. The hot indentation device for a hollow plate according to claim 1, characterized in that, The hollow interior of the hot press roller forms a heat-conducting oil cavity. The hollow rotating shaft of the hot press roller forms an oil inlet channel and an oil outlet channel. The rotating shaft is connected to the oil inlet pipe or the oil outlet pipe through a rotating shaft bearing. A skeleton oil seal is provided between the rotating shaft and the rotating shaft bearing. The oil inlet pipe is connected to the oil outlet of the heat-conducting oil storage mechanism. The oil outlet pipe is connected to the oil inlet of the heat-conducting oil storage mechanism. A heating unit is provided inside the heat-conducting oil storage mechanism.

3. The hot indentation device for a hollow plate according to claim 2, characterized in that, The temperature of the heat transfer oil outlet is 180-220℃.

4. The hot indentation device for a hollow plate according to claim 1, characterized in that, The pressure plate is L-shaped and has a vertically elongated hole. The protective shell has mounting holes corresponding to the elongated holes, and the mounting holes and the elongated holes are provided with first mounting bolts.

5. The hot indentation device for a hollow plate according to claim 1, characterized in that, The feeding guide unit includes a support plate, and adjustable-width transverse guide components are provided on both sides of the support plate. A pressure roller is provided between the transverse guide components and the feed inlet. The pressure roller is rotatably mounted on the pressure base, and the pressure base is installed on the elongated hole of the mounting bracket by bolts.

6. The hot indentation device for a hollow plate according to claim 5, characterized in that, The lateral guide assembly includes a guide plate and a movable mounting plate, which are vertically arranged and connected by a connecting plate. The movable mounting plate has a movable hole that is fitted onto a mounting bolt. A compression spring is provided between the movable mounting plate and the side of the support plate, and a movable nut is provided on the side of the movable mounting plate away from the support plate.

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