A heating drying device and a gluing machine

Abstract

The utility model discloses a kind of heating drying device and gluing machine, including roller, heating unit, multiple power supply coils and multiple power supply probes, the roller is the hollow cylinder of two ends closed, the heating unit is set in the inside of roller, the both ends of the roller are respectively provided with the connecting shaft for installing bearing, and the connecting shaft of one end is provided with extension section, multiple power supply coils are set on the extension section along its axial direction equidistance, multiple power supply coils are electrically connected with heating unit, and can rotate with the roller synchronously, multiple power supply probes are set on gluing machine, located multiple power supply coils side, and electrically connected with external power supply, the multiple power supply probes are respectively and multiple power supply coils one-to-one corresponding setting, sliding contact is formed between each power supply probe and corresponding power supply coil. The utility model has the advantages of simple structure, temperature control precision, high reliability, high safety and maintenance-free.

Description

Technical Field

[0001] This utility model relates to the technical field of coating production equipment, and in particular to a heating and drying device and a gluing machine. Background Technology

[0002] In the coating production fields of packaging, printing, and composite materials, traditional oil-based adhesives (referred to as "oil adhesives") contain volatile organic compounds (VOCs), which cause environmental pollution, harm to human health, produce irritating odors, and are costly. While water-based adhesives (referred to as "water adhesives") have advantages such as being environmentally friendly, non-toxic, and low-cost, their drying process relies on moisture evaporation, resulting in low drying efficiency and high energy consumption—a core bottleneck that severely restricts their replacement of oil adhesives.

[0003] To address the drying challenge of water-based adhesives, coating machines currently used in coating production generally employ two heating methods: one is to add a heating roller, and the other is to use electric heating with a rotary joint. The existing added heating roller primarily uses heat transfer oil or steam for heating, which suffers from problems such as complex structure, slow heating, uneven temperature distribution, and the risk of leakage. Meanwhile, the electric heating with a rotary joint uses a fixed carbon brush-rotating slip ring power supply structure, which has drawbacks such as complex internal wiring, easy wear and leakage at the joints, and high maintenance costs.

[0004] In summary, there is an urgent need to design a new type of heating and drying device to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a heating and drying device with advantages such as simple structure, precise temperature control, high reliability, high safety and maintenance-free operation.

[0006] Another objective of this invention is to provide a gluing machine.

[0007] The objective of this utility model can be achieved by adopting the following technical solutions: A heating and drying device is rotatably mounted on a gluing machine via bearings. The heating and drying device includes a drum, a heating unit, multiple power supply coils, and multiple power supply probes. The drum is a hollow cylinder closed at both ends. The heating unit is disposed inside the drum. Connecting shafts for mounting bearings are respectively provided at both ends of the drum, and one end of the connecting shaft is provided with an extension section. Multiple power supply coils are equally spaced along the axial direction of the extension section. The multiple power supply coils are electrically connected to the heating unit and can rotate synchronously with the drum. The multiple power supply probes are disposed on the gluing machine, located next to the multiple power supply coils, and electrically connected to an external power source. Each power supply probe is configured to correspond one-to-one with a multiple power supply coil, and each power supply probe forms a sliding contact with its corresponding power supply coil.

[0008] Furthermore, multiple power supply probes are fixed to the gluing machine using mounting brackets.

[0009] Furthermore, the heating unit includes multiple heating rods, which are evenly distributed along the circumference of the roller.

[0010] Furthermore, multiple power supply coils are connected to the heating unit via wires, and the connecting shaft has through holes for the wires to pass through.

[0011] Furthermore, a temperature sensor and a temperature controller are installed inside the drum. The temperature sensor is electrically connected to the temperature controller, and the temperature controller is electrically connected to the heating unit.

[0012] Furthermore, the bearing is a rolling bearing.

[0013] Another objective of this utility model can be achieved by adopting the following technical solution: A gluing machine includes the heating and drying device described above.

[0014] Compared with the prior art, this utility model has the following advantages and beneficial effects: 1. This utility model adopts a "rotating coil-fixed probe" power supply structure, which places the relatively fragile component (i.e., the coil) in the power supply interface that requires regular maintenance at the rotating end, while fixing the sturdy power supply probe. This simplifies the structure of the external fixed end, avoids the maintenance problems and pollution risks caused by the wear of traditional fixed carbon brushes, and thus significantly improves the reliability of equipment operation and the maintenance-free cycle.

[0015] 2. This utility model adopts a circumferentially distributed layout of multiple heating rods. Through the uniform arrangement of multiple heat sources, an extremely uniform temperature field is formed on the surface of the roller, which effectively avoids the problem of local overheating or insufficient temperature, ensures uniform heating during the coating process, and guarantees consistent coating quality.

[0016] 3. This utility model adopts a multi-channel independent power supply design with multiple coils and multiple probes. Each channel can realize independent power transmission and control, ensuring stable power transmission.

[0017] 4. The utility model can achieve efficient drying of water-based adhesives, and by replacing oil-based adhesives, it achieves non-toxic, odorless, and zero VOC emissions, meeting environmental protection requirements; at the same time, the raw material cost of water-based adhesives is lower, energy consumption is more economical, and the overall economic benefits are outstanding. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the heating and drying device of this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of the heating and drying device of this utility model.

[0020] Figure 3 This is a side view of the heating and drying device of this utility model.

[0021] Figure 4 This is a cross-sectional view of the heating and drying device of this utility model.

[0022] Figure 5 This is one of the partial schematic diagrams of the heating and drying device of this utility model.

[0023] Figure 6 This is a second partial schematic diagram of the heating and drying device of this utility model.

[0024] Figure 7 This is a schematic diagram of the gluing machine of this utility model. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0026] Example 1: like Figures 1 to 6 As shown, this embodiment provides a heating and drying device, which is rotatably mounted on a gluing machine 6 via a bearing 5 (in this embodiment, a rolling bearing is used as an example). The heating and drying device includes a drum 1, a heating unit, multiple power supply coils 3, and multiple power supply probes 4. The drum 1 is a hollow cylinder closed at both ends. The heating unit is located inside the drum 1. The two ends of the drum 1 are respectively provided with connecting shafts for mounting the bearing 5, and one end of the connecting shaft is provided with an extension section. Multiple power supply coils 3 are arranged at equal intervals along the axial direction of the extension section. The multiple power supply coils 3 are electrically connected to the heating unit and can rotate synchronously with the drum 1. The multiple power supply probes 4 are fixed on the gluing machine 6 by mounting brackets, located next to the power supply coils 3, and electrically connected to an external power source. The multiple power supply probes 4 are respectively arranged in a one-to-one correspondence with the multiple power supply coils 3. When the drum 1 rotates, the power supply probes 4 form sliding contact with the corresponding power supply coils 3, thereby directly transmitting electrical energy from the external power source to the rotating power supply coils 3.

[0027] The heating unit includes multiple heating rods 2, which are evenly distributed along the circumference of the roller 1. The number of heating rods 2 can be set according to the size of the roller 1. In this embodiment, nine independent heating rods 2 are used as an example. The heat source is applied directly and evenly to the wall of the roller 1 through the nine heating rods 2, resulting in high thermal efficiency.

[0028] Multiple power supply coils 3 are connected to the heating unit via wires, and the connecting shaft has through holes 7 for the wires to pass through.

[0029] The drum 1 is equipped with a temperature sensor and a temperature controller. The temperature sensor is electrically connected to the temperature controller, and the temperature controller is electrically connected to the heating unit. The temperature sensor is used to monitor the wall temperature of the drum 1 in real time, and the temperature controller is used to dynamically adjust the output power to maintain a constant temperature, thereby achieving precise closed-loop control of the temperature of the drum 1.

[0030] The number of power supply probes 4 and power supply coils 3 can be set according to actual needs; this embodiment uses 5 as an example.

[0031] The working principle of this embodiment is as follows: An external power supply is electrically connected to multiple power supply probes 4. When the drum 1 rotates, multiple power supply coils 3 mounted on the drum 1 rotate synchronously with it and maintain continuous physical contact with the multiple power supply probes 4. Electrical energy is transmitted from the power supply probes 4 to the power supply coils 3 through the contact points, and the power supply coils 3 then transmit the electrical energy to the multiple heating rods 2 through internal circuits (such as wires); after the heating rods 2 are energized and generate heat, they conduct the heat to the drum wall of the drum 1, thereby efficiently and uniformly heating and drying the water-based adhesive material on the surface of the drum wall of the drum 1.

[0032] Example 2: like Figure 7 As shown, this embodiment provides a gluing machine, including the heating and drying device described in Embodiment 1.

[0033] The above description is only a preferred embodiment of this utility model patent, but the protection scope of this utility model patent is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed in this utility model patent, based on the technical solution and utility model patent concept of this utility model patent, shall fall within the protection scope of this utility model patent.

Claims

1. A heating and drying apparatus, wherein the heating and drying apparatus is rotatably mounted on a gluing machine via bearings; characterized in that: The heating and drying device includes a drum, a heating unit, multiple power supply coils, and multiple power supply probes. The drum is a hollow cylinder closed at both ends. The heating unit is located inside the drum. Each end of the drum has a connecting shaft for mounting bearings, and one end of the connecting shaft has an extension section. Multiple power supply coils are evenly spaced along the axial direction of the extension section. The multiple power supply coils are electrically connected to the heating unit and can rotate synchronously with the drum. The multiple power supply probes are located on the gluing machine next to the multiple power supply coils and are electrically connected to an external power source. Each power supply probe is configured to correspond one-to-one with a power supply coil, and each power supply probe forms a sliding contact with its corresponding power supply coil.

2. The heating and drying apparatus according to claim 1, characterized in that: Multiple power supply probes are fixed to the gluing machine using mounting brackets.

3. The heating and drying apparatus according to claim 1, characterized in that: The heating unit includes multiple heating rods, which are evenly distributed along the circumference of the roller.

4. The heating and drying apparatus according to claim 1, characterized in that: Multiple power supply coils are connected to the heating unit via wires, and the connecting shaft has through holes for the wires to pass through.

5. The heating and drying apparatus according to claim 1, characterized in that: The drum is equipped with a temperature sensor and a temperature controller. The temperature sensor is electrically connected to the temperature controller, and the temperature controller is electrically connected to the heating unit.

6. The heating and drying apparatus according to claim 1, characterized in that: The bearing is a rolling bearing.

7. A gluing machine, characterized in that: Includes the heating and drying apparatus according to any one of claims 1 to 6.

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