Heating device for coating machine

Abstract

A heating device for a coating machine comprises a frame body, a plurality of grating assemblies arranged in rows are arranged in the frame body, and an air gap used for airflow circulation is formed between every two adjacent grating assemblies; the grating assembly is composed of a plurality of first grating plates and a plurality of second grating plates which are sequentially and alternately arranged, and the ends of the first grating plates and the ends of the second grating plates are connected with rotating shafts used for adjusting the angles of the first grating plates or the angles of the second grating plates. Compared with the prior art, airflow trend and flow resistance are convenient to adjust, so that airflow exchange speed between adjacent air gaps is increased, airflow heating efficiency is improved, overall heating is uniform, local overheating is avoided, heat dissipation is facilitated through the arrangement of the first grating plate and the second grating plate, and heat dissipation efficiency is improved. Therefore, the overheating possibility of the heating device is reduced, the service life is prolonged, and the stability and safety of the heating device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coating machine equipment, in particular to a heating device for a coating machine. Background Art

[0002] The coating oven is a key piece of equipment in the coating process, used to accelerate coating drying and curing, improve production efficiency, control coating quality, and meet the needs of different processes. Through appropriate temperature and air flow, the oven can quickly evaporate solvents or moisture from the coating and ensure a uniform coating with strong adhesion. Optimizing oven design and operating parameters can help reduce coating defects and improve product appearance and performance. The flexibility of the coating oven to adapt to different process requirements is crucial for industries such as printing, coating, textiles, and plastics, improving product quality and promoting sustainable production development. The oven heating pack is the main source of heat for the oven. Its heating capacity and energy consumption directly affect the production efficiency and power consumption of the entire production line.

[0003] Currently, the main heating methods for heating packs on the market are thermal oil heating, steam heating, and electric heating. Among them, thermal oil and steam heating both require the planning of supporting medium pipelines and heating boilers. In comparison, the electric heating pack system is relatively simple, and directly supplies power to the heating pack to increase the temperature inside the oven. The heating element is the most critical component of the electric heating pack, which is used to convert electrical energy into thermal energy. Common heating elements include resistance wire, heating chip, heating tube, etc., and their materials are usually alloys or ceramics with high resistivity. The electric heating fin tube heating pack adopts a tubular structure, which wraps the heating element (such as resistance wire or heating chip). The fins are located on the tube wall, which improves the heat transfer efficiency by increasing the surface area.

[0004] To address the aforementioned issues, Chinese Patent Application No. 201510404825.4 discloses a distributed heating device for a coating machine oven. This device places the oven body on a support, sets a temperature control curve based on actual needs, and turns on the controller. The coated fabric is then laid horizontally in the center of the oven body by a uniformly rotating coating roller. Multiple distributed cast metal heating blocks evenly distributed within the oven body heat the fabric evenly. During the heating process, the oven door can be opened to check the drying progress of the fabric. Chinese Patent Application No. 201810210037.5 discloses a finned electric heating tube. This tube comprises a U-shaped heating tube, a heating wire, electrodes, a mounting base, and a power cord. The U-shaped heating tube houses a heating wire, with electrodes at both ends connected to a power cord that passes through the mounting base. The inner wall of the U-shaped heating tube is provided with evenly spaced grooves, each containing fins.

[0005] In the above-mentioned prior art, multiple heating blocks are set on the inner side of the oven body for heating. During the heating process, the temperature of the area near the heating block is higher than the temperature of the area far away from the heating block, which makes the coating heating and drying effect poor. In addition, for the existing heating using finned tubes, due to the large gap between the fins, the heat is unevenly distributed in the tube, which also makes the temperature in some areas higher and the temperature in other areas lower. In addition, the heat dissipation efficiency of the finned tubes is low, which easily causes the temperature of the heating pack to rise and affects the life and stability of the heating pack. Utility Model Content

[0006] The utility model is to overcome the defects in the prior art and provide a device with uniform heat distribution, good heating effect and convenient heat dissipation.

[0007] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solution: a heating device for a coating machine, comprising a frame body, wherein a plurality of grille assemblies arranged in rows are provided in the frame body, and air gaps for circulating airflow are formed between adjacent grille assemblies; the grille assemblies are composed of a plurality of first grille plates and a plurality of second grille plates arranged alternately in sequence, and the ends of the first grille plates and the second grille plates are connected to a rotating shaft for adjusting the angle of the first grille plate or the second grille plate, and the surfaces of the first grille plates and the second grille plates are provided with a heating film for heating the airflow.

[0008] As a preferred solution of the present invention, a plurality of first grid plates and a plurality of second grid plates are alternately arranged in sequence along the length direction of the grid assembly.

[0009] As a preferred solution of the present invention, the first grid plate and the second grid plate are both vertically arranged along the height direction of the frame body, and each of the first grid plate and the second grid plate is independently installed on the frame body.

[0010] As a preferred solution of the present invention, an angle is formed between the first grid plate and the second grid plate, the angle gradually decreasing from the outside to the inside.

[0011] As a preferred solution of the present invention, a gap is formed between the first grid plate and the second grid plate to facilitate airflow.

[0012] As a preferred solution of the present invention, the plurality of first grid plates and the second grid plates are rotatably arranged in the frame body, and the plurality of first grid plates and the plurality of second grid plates rotate synchronously.

[0013] As a preferred solution of the present invention, the heating film is arranged on the side surfaces of the first grid plate and the second grid plate, and the air flow flows through the surface of the heating film.

[0014] As a preferred solution of the present invention, both ends of the frame body are provided with thermal insulation cotton for reducing temperature loss, and the thermal insulation cotton is located at opposite ends of the grille assembly.

[0015] As a preferred solution of the present invention, the rotating shaft is arranged in the thermal insulation cotton, and the rotating shaft rotates in the thermal insulation cotton.

[0016] As a preferred solution of the present invention, a driving mechanism for controlling the rotation of the rotating shaft is connected to the rotating shaft, and several rotating shafts rotate synchronously.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. A plurality of grille assemblies are arranged in the frame body, each grille assembly is provided with a plurality of first grille plates and second grille plates, and a heating film is arranged on the first grille plates and the second grille plates, and the grille plates are driven to rotate by a rotating shaft, so as to adjust the angle between the first grille plates and the second grille plates, thereby facilitating the adjustment of the airflow direction and flow resistance, thereby increasing the airflow exchange speed between adjacent air gaps, thereby improving the heating efficiency of the airflow, making the overall heating uniform, and avoiding the occurrence of local overheating. At the same time, the arrangement of the first grille plates and the second grille plates is conducive to heat dissipation, thereby reducing the possibility of overheating of the heating device, extending the service life, and improving the stability and safety of the heating device;

[0019] 2. Furthermore, the first grid plate and the second grid plate are independently installed in the frame body, which facilitates the disassembly and maintenance of the first grid plate and the second grid plate, and also facilitates the cleaning and maintenance of the heating device, reducing the complexity and cost of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 It is a cross-sectional view of the utility model;

[0022] Figure 3 It is a structural diagram of the grille assembly of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the grid plate

[0024] Reference numerals: frame body 1 , thermal insulation cotton 2 , grille assembly 3 , grille plate 301 , angle 3011 , gap 302 , air gap 4 , rotating shaft 5 , heating film 6 . DETAILED DESCRIPTION

[0025] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings.

[0026] like Figures 1-4 As shown, a heating device for a coating machine includes a frame body 1, in which a plurality of grille assemblies 3 arranged in rows are provided, and air gaps 4 for circulating airflow are formed between adjacent grille assemblies 3; the grille assemblies 3 are composed of a plurality of first grille plates 301 and a plurality of second grille plates 303 arranged alternately in sequence, and the ends of the first grille plates 301 and the second grille plates 303 are connected to a rotating shaft 5 for adjusting the angle of the first grille plate 301 or the second grille plate 303, and the surfaces of the first grille plates 301 and the second grille plates 303 are provided with a heating film 6 for heating the airflow.

[0027] Furthermore, several grille assemblies 3 are arranged in the frame body 1, each grille assembly 3 is arranged along the height direction of the frame body 1, and several grille assemblies 3 are arranged in parallel, so that an air gap 4 is formed between two adjacent grille assemblies 3, and air flows through the air gap 4. In addition, each grille assembly 3 is composed of several first grille plates 301 and second grille plates 303, and a heating film 6 is attached to the side surfaces of the first grille plates 301 and the second grille plates 303. When the air flow flows in the air gap 4, it passes through the heating film 6 to heat the air flow. At the same time, a rotating shaft 5 is connected to both ends of the first grille plate 301 and the second grille plate 303. Under the action of the rotating shaft 5, the first grille plate 301 and the second grille plate 303 are driven to rotate synchronously, thereby realizing the adjustment of the angle of the first grille plate 301 and the second grille plate 303, and then the flow direction of the air flow can be changed, thereby ensuring the heating effect of the air flow.

[0028] When the airflow between adjacent air gaps 4 is exchanged, the airflow must pass through the grille assembly 3, and thus must be heated by the heating film 6. Through the heating effect of the heating film 6 on the grille assembly 3, the gas in the air gaps 4 on both sides of the grille assembly 3 is heated, thereby forming high pressure for the gas in the air gaps 4 on both sides, forming a pressure difference between adjacent air gaps 4, accelerating the circulation of the gas between the air gaps 4, and further heating the circulating gas.

[0029] A plurality of first grid plates 301 and a plurality of second grid plates 303 are alternately arranged in sequence along the length direction of the grid assembly 3. Furthermore, the first grid plates 301 and the second grid plates 303 are arranged along the height direction of the frame body 1, and the first grid plates 301 and the second grid plates 303 are independently installed on the frame body 1, which facilitates the disassembly and maintenance of the first grid plates 301 and the second grid plates 303, and also facilitates the cleaning and maintenance of the heating device, reducing the complexity and cost of maintenance.

[0030] An angle 3011 is formed between the first grid plate 301 and the second grid plate 303, the size of which gradually decreases from the outside to the inside. At the same time, a gap 302 is formed between the first grid plate 301 and the second grid plate 303 to facilitate the flow of air. When the air flows in the first grid plate 301 and the second grid plate 303, the angle 3011 formed makes the flow channel smaller, thereby reducing the flow rate of the air flow, increasing the contact time between the air flow and the heating film 6, and improving the heating effect. Specifically, the heating film 6 is arranged on the side of the first grid plate 301 and the second grid plate 303, and the air flow flows through the surface of the heating film 6, ensuring the heating effect of the air flow.

[0031] Insulation cotton 2 is provided at both ends of the frame body 1 for reducing temperature loss. The insulation cotton 2 is located at opposite ends of the grille component 3. Under the action of the insulation cotton 2, heat loss from the two ends of the frame body 1 is avoided.

[0032] The rotating shaft 5 is arranged in the thermal insulation cotton 2, and the rotating shaft 5 rotates in the thermal insulation cotton 2. Specifically, the rotating shaft 5 is rotatably connected to the end of the frame body 1, and the rotating shaft 5 rotates in the thermal insulation cotton 2, and the thermal insulation cotton 2 will not affect the rotating shaft 5. In addition, the rotating shaft 5 is connected to a driving mechanism for controlling the rotation of the rotating shaft 5, and several rotating shafts 5 rotate synchronously. Several rotating shafts 5 are arranged in linkage, and the rotation of the rotating shaft 5 is controlled under the action of the driving mechanism, thereby realizing the rotation adjustment of the first grid plate 301 and the second grid plate 303.

[0033] Specifically, a motor for adjusting the rotation of the rotating shaft 5 is installed on the rotating shaft 5. Several motors connected to several first grid plates 301 are driven synchronously. Similarly, several motors connected to several second grid plates 303 are driven synchronously. Under the action of the motor driving the rotating shaft 5 to rotate, the angle formed between the first grid plate 301 and the second grid plate 303 is adjusted.

[0034] In addition, gears can also be set on the rotating shaft 5, and the gears on the rotating shaft 5 of the same grille component 3 are engaged in pairs. Each grille component 2 is connected to a motor, and several motors synchronously drive the rotating shaft 5 in each grille component 3 to rotate synchronously, thereby adjusting the angle formed between the first grille plate 301 and the second grille plate 303.

[0035] The above description of the disclosed embodiments will enable those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

[0036] Although this document frequently uses the following terms: frame 1, insulation 2, grille assembly 3, first grille plate 301, angle 3011, gap 302, second grille plate 303, air gap 4, rotating shaft 5, heating film 6, etc., the use of other terms is not excluded. These terms are used solely to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A heating device for a coating machine, characterized in that: The invention comprises a frame body (1), wherein a plurality of grille assemblies (3) arranged in a row are provided in the frame body (1), and air gaps (4) for circulating airflow are formed between adjacent grille assemblies (3); the grille assemblies (3) are composed of a plurality of first grille plates (301) and a plurality of second grille plates (303) arranged alternately in sequence, and the ends of the first grille plates (301) and the second grille plates (303) are connected to rotating shafts (5) for adjusting the angles of the first grille plates (301) or the second grille plates (303), and the surfaces of the first grille plates (301) and the second grille plates (303) are both provided with heating films (6) for heating the airflow.

2. A heating device for a coating machine according to claim 1, characterized in that: A plurality of first grid plates (301) and a plurality of second grid plates (303) are alternately arranged in sequence along the length direction of the grid assembly (3).

3. A heating device for a coating machine according to claim 1, characterized in that: The first grid plate (301) and the second grid plate (303) are both vertically arranged along the height direction of the frame body (1), and each first grid plate (301) and second grid plate (303) are independently mounted on the frame body (1).

4. A heating device for a coating machine according to claim 1, characterized in that: An included angle (3011) is formed between the first grid plate (301) and the second grid plate (303), the dimension of which gradually decreases from the outside to the inside.

5. The heating device for a coating machine according to claim 1, characterized in that: A gap (302) is formed between the first grid plate (301) and the second grid plate (303) to facilitate airflow.

6. The heating device for a coating machine according to claim 1, characterized in that: The plurality of first grid plates (301) and the plurality of second grid plates (303) are rotatably arranged in the frame body (1), and the plurality of first grid plates (301) and the plurality of second grid plates (303) rotate synchronously.

7. The heating device for a coating machine according to claim 1, characterized in that: The heating film (6) is arranged on the side surfaces of the first grid plate (301) and the second grid plate (303), and airflow flows through the surface of the heating film (6).

8. The heating device for a coating machine according to claim 1, characterized in that: Thermal insulation cotton (2) for reducing temperature loss is provided at both ends of the frame body (1), and the thermal insulation cotton (2) is located at opposite ends of the grille assembly (3).

9. The heating device for a coating machine according to claim 8, characterized in that: The rotating shaft (5) is arranged in the heat-insulating cotton (2), and the rotating shaft (5) rotates in the heat-insulating cotton (2).

10. The heating device for a coating machine according to claim 1, characterized in that: The rotating shaft (5) is connected to a driving mechanism for controlling the rotation of the rotating shaft (5), and a plurality of rotating shafts (5) rotate synchronously.

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