Drying device for thermo-sensitive paper production

Abstract

The utility model discloses a drying device for thermo-sensitive paper production, which relates to the technical field of thermo-sensitive paper production, and comprises a baking chamber, a hot air box is arranged at the side end of the baking chamber, a rebaking mechanism is arranged in the baking chamber, the rebaking mechanism comprises a supporting pipe, the supporting pipe is connected in the baking chamber, the side end of the supporting pipe is connected with an electrically operated valve, and the electrically operated valve is connected with the hot air box. And the air injection cover head is located at the upper end of the thermo-sensitive paper, an air guide hose and a moving block are connected between the air injection cover head and the supporting pipe, the moving block is connected to the side end of the air injection cover head, and a threaded groove is formed in the moving block. The thermal paper drying device is reasonable in design structure, the air injection cover head can be moved to the part where the thermal paper does not reach the drying standard so as to dry the part again, the accurate re-drying can ensure that the drying degree of each part of the thermal paper is uniform, meanwhile, the re-drying does not bake the part which reaches the drying standard so as to avoid excessive drying, and the drying quality of the thermal paper is improved. And the quality of the dried thermo-sensitive paper is ensured.

Description

Technical Field

[0001] This utility model relates to the field of thermal paper production technology, specifically a drying device for thermal paper production. Background Technology

[0002] Thermal paper has a thermal coating on its surface, which contains colorless dyes and color developers. When the thermal paper comes into contact with the print head, the high temperature generated by the print head causes the dyes and color developers to react chemically, thus displaying text or graphics on the paper. During the production process, thermal paper contains a lot of moisture after coating and other processes, so it needs to be dried.

[0003] However, traditional drying equipment often bakes the entire thermal paper uniformly, making it impossible to precisely bake areas where the thermal paper has not reached the required dryness. In actual production, due to the material characteristics of thermal paper and uneven paper thickness, some areas often fail to reach the required dryness. If these areas are not treated, the quality of the thermal paper will be affected. If traditional drying equipment is used to continue baking uniformly, the areas that have already reached the required dryness may become over-dried, which will also affect the quality of the thermal paper.

[0004] To address these issues, we have provided a drying device for thermal paper production. Utility Model Content

[0005] 1) Technical problems to be solved

[0006] This invention proposes a drying device for thermal paper production. Through the cooperation of the air jet head, moving block, threaded rod, and servo motor, it solves the problem that traditional drying devices cannot accurately bake areas of thermal paper that have not reached the required drying standard.

[0007] Technical solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a drying device for thermal paper production, comprising a baking chamber, a hot air box disposed on the side of the baking chamber, and a supplementary drying mechanism disposed within the baking chamber, the supplementary drying mechanism comprising:

[0009] A support tube is connected to the baking chamber, and an electric valve is connected to the side end of the support tube;

[0010] An air jet nozzle is located at the upper end of the thermal paper, and an air guide hose is connected between the air jet nozzle and the support tube.

[0011] A movable block is connected to the side end of the jet nozzle, and a threaded groove is provided inside the movable block;

[0012] A threaded rod is rotatably connected to the baking chamber and threadedly connected to a moving block. A servo motor is connected to the side end of the threaded rod and the servo motor is connected to the outer end of the baking chamber.

[0013] An infrared humidity detector is connected to the upper end of the baking chamber, and a controller is also connected to the upper end of the baking chamber. The controller is connected to the infrared humidity detector, the electric valve, and the servo motor.

[0014] Furthermore, a support roller assembly is rotatably connected to both sides of the baking chamber. The support roller assembly consists of two rollers, with the thermal paper located at the outer end of the rollers.

[0015] Furthermore, the supplementary baking mechanism also includes a track rod connected to the baking chamber. The track rod is arranged parallel to the threaded rod, and the moving block is slidably connected to the outer end of the track rod.

[0016] Furthermore, the hot air box consists of a fan and a heater, and a gas-gathering hood is connected to the side of the hot air box. One end of the gas-gathering hood has a large opening and the other end has a small opening, with the large opening connected to the hot air box.

[0017] Furthermore, a connecting pipe is provided between the small opening at the side end of the gas-gathering hood and the support pipe, and a temperature sensor is installed inside the small opening at the side end of the gas-gathering hood.

[0018] Furthermore, the baking chamber is equipped with an upper heating pipe and a lower heating pipe, with thermal paper located between the upper heating pipe and the lower heating pipe. Both the upper heating pipe and the lower heating pipe are connected to the small opening at the side end of the gas gathering hood.

[0019] Furthermore, both the upper and lower heating pipes are inclined, and each of the upper and lower heating pipes is connected to an air jet head at its outer end. The air jet head is inclined, and an exhaust box is connected to the side end of the baking chamber. The exhaust box is located at the side end of the upper and lower heating pipes.

[0020] (iii) Beneficial effects:

[0021] Compared with existing technologies, this drying device for thermal paper production has the following advantages:

[0022] 1. This drying device for thermal paper production includes a moving block and a threaded rod. When the servo motor is started, it drives the threaded rod to rotate, which in turn moves the moving block, thereby moving the air jet nozzle. This allows the air jet nozzle to be moved to areas of the thermal paper that have not reached the required drying standard, enabling re-drying of those areas. This precise re-drying ensures uniform drying throughout the thermal paper, while avoiding over-drying of already dried areas and guaranteeing the quality of the dried thermal paper.

[0023] II. This drying device for thermal paper production is equipped with upper and lower heating pipes. Hot air generated by the hot air box is simultaneously discharged into both the upper and lower heating pipes. The upper heating pipe is located at the top of the thermal paper and sprays hot air downwards, while the lower heating pipe is located at the bottom of the thermal paper and sprays hot air upwards. Through the combined action of the upper and lower heating pipes, the thermal paper is heated simultaneously on both the top and bottom surfaces, greatly improving drying efficiency. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0025] Figure 1 This is a schematic diagram of the overall structure of the drying device for producing thermal paper according to this utility model;

[0026] Figure 2 This is a schematic diagram of the rear structure of the drying device for producing thermal paper according to this utility model;

[0027] Figure 3 This is a schematic diagram of the internal structure of the drying device for producing thermal paper according to this utility model;

[0028] Figure 4 This is a cross-sectional structural diagram of the drying device for producing thermal paper according to this utility model;

[0029] Figure 5 This utility model relates to a drying device for the production of thermal paper. Figure 4 Schematic diagram of area A.

[0030] In the diagram: 1. Baking chamber; 2. Hot air box; 3. Support pipe; 4. Electric valve; 5. Air jet hood; 6. Air guide hose; 7. Moving block; 8. Threaded rod; 9. Servo motor; 10. Infrared humidity detector; 11. Support roller group; 12. Track rod; 13. Air gathering hood; 14. Connecting pipe; 15. Upper heating pipe; 16. Lower heating pipe; 17. Exhaust box. Detailed Implementation

[0031] 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.

[0032] like Figure 1-5As shown, this utility model provides a technical solution: a drying device for thermal paper production, including a baking chamber 1, with a support roller group 11 rotatably connected to both sides inside the baking chamber 1. The support roller group 11 consists of two rollers, with the thermal paper located at the outer end of the rollers, thereby pulling the thermal paper to make it flat in the baking chamber 1.

[0033] A hot air box 2 is provided on the side of the baking chamber 1. The hot air box 2 consists of a fan and a heater, which can generate hot air. The temperature of the hot air can be adjusted by adjusting the function of the heater. A gas concentrator 13 is connected to the side of the hot air box 2. One end of the gas concentrator 13 has a large opening and the other end has a small opening. The large opening is connected to the hot air box 2, so that the generated hot air can be collected through the gas concentrator 13.

[0034] The baking chamber 1 is equipped with a supplementary baking mechanism, which includes a support pipe 3, an air jet hood 5, a moving block 7, and a threaded rod 8. The support pipe 3 is connected to the baking chamber 1. A connecting pipe 14 is connected between the small opening at the side end of the air gathering hood 13 and the support pipe 3, so that hot air can be injected into the support pipe 3 through the connecting pipe 14. A temperature sensor is installed in the small opening at the side end of the air gathering hood 13 to detect the temperature of the hot air.

[0035] An electric valve 4 is connected to the side end of the support tube 3. The electric valve 4 is used to control whether the support tube 3 is ventilated. The jet nozzle 5 is located at the upper end of the thermal paper. A duct hose 6 is connected between the jet nozzle 5 and the support tube 3. The duct hose 6 is used to ensure that the jet nozzle 5 can still ventilate normally when it moves. The moving block 7 is connected to the side end of the jet nozzle 5. The moving block 7 has a threaded groove. The threaded rod 8 is rotatably connected to the baking chamber 1. The threaded rod 8 is threadedly connected to the moving block 7. A servo motor 9 is connected to the side end of the threaded rod 8. The servo motor 9 is connected to the outer end of the baking chamber 1. The supplementary baking mechanism also includes a track rod 12. The track rod 12 is connected to the baking chamber 1. The track rod 12 is set parallel to the threaded rod 8. The moving block 7 is slidably connected to the outer end of the track rod 12. The track rod 12 is used to constrain the moving block 7 so that it cannot rotate. When the servo motor 9 is started, it will drive the threaded rod 8 to rotate. The rotation of the threaded rod 8 interacts with the moving block 7. Under the constraint of the track rod 12, the moving block 7 can drive the jet nozzle 5 to move.

[0036] An infrared humidity detector 10 is connected to the upper end of the baking chamber 1. The infrared humidity detector 10 utilizes the strong absorption characteristics of water molecules to infrared radiation of a specific wavelength. It emits an infrared beam of a specific wavelength and irradiates the surface of the object being tested or the medium. When the surface of the object or the medium contains moisture, the water molecules will absorb the infrared light, thereby changing the intensity of the infrared light. A controller is connected to the upper end of the baking chamber 1. The controller is connected to the infrared humidity detector 10, the electric valve 4, and the servo motor 9 respectively. The controller can control the electric valve 4 and the servo motor 9 according to the data of the infrared humidity detector 10, thereby adjusting the position and spray duration of the air jet head 5.

[0037] The baking chamber 1 is equipped with an upper heating pipe 15 and a lower heating pipe 16. An exhaust box 17 is connected to the side of the baking chamber 1. The exhaust box 17 is located at the side of the upper heating pipe 15 and the lower heating pipe 16. The exhaust box 17 is used to discharge the water vapor generated during the drying of the thermal paper from the baking chamber 1. The thermal paper is located between the upper heating pipe 15 and the lower heating pipe 16. Both the upper heating pipe 15 and the lower heating pipe 16 are connected to the small opening at the side of the gas gathering hood 13. Both the upper heating pipe 15 and the lower heating pipe 16 are inclined so that the hot air ejected can move as far as possible toward the exhaust box 17, thereby facilitating the discharge of water vapor. Both the upper heating pipe 15 and the lower heating pipe 16 are connected to jet nozzles at their outer ends. The jet nozzles are inclined.

[0038] Working principle: Hot air generated by the hot air box 2 is injected into the upper heating pipe 15 and the lower heating pipe 16, which blow hot air from the upper and lower ends of the thermal paper, respectively, so that the thermal paper is heated on both sides at the same time, which can improve the drying efficiency. The infrared humidity detector 10 detects the humidity of the thermal paper to determine its dryness. When a part of the thermal paper is not dry enough, the controller will control the servo motor 9 to drive the threaded rod 8 to rotate. The rotation of the threaded rod 8 interacts with the moving block 7, which will drive the air jet head 5 to move to the side of the area. When the area reaches the lower end of the air jet head 5, the electric valve 4 opens, so that the hot air from the hot air box 2 enters the air jet head 5 through the connecting pipe 14, the support pipe 3, and the air guide hose 6, so that the air jet head 5 can dry the area again. When the area is dry enough, the electric valve 4 closes.

[0039] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 limitations on this utility model.

[0040] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A drying apparatus for thermal paper production, comprising a drying chamber (1), characterized in that: A hot air box (2) is provided on the side of the baking chamber (1), and a supplementary baking mechanism is provided inside the baking chamber (1). The supplementary baking mechanism includes: Support tube (3), the support tube (3) is connected inside the baking chamber (1), and an electric valve (4) is connected to the side end of the support tube (3). A jet nozzle (5) is located at the upper end of the thermal paper, and a flexible air guide hose (6) is connected between the jet nozzle (5) and the support tube (3). A movable block (7) is connected to the side end of the jet nozzle (5), and a threaded groove is provided inside the movable block (7); A threaded rod (8) is rotatably connected inside the baking chamber (1). The threaded rod (8) is threadedly connected inside the moving block (7). A servo motor (9) is connected to the side end of the threaded rod (8). The servo motor (9) is connected to the outside end of the baking chamber (1). An infrared humidity detector (10) is connected to the upper end of the baking chamber (1), and a controller is connected to the upper end of the baking chamber (1). The controller is connected to the infrared humidity detector (10), the electric valve (4), and the servo motor (9) respectively.

2. The drying apparatus for thermal paper production according to claim 1, characterized in that: The baking chamber (1) has a support roller group (11) rotatably connected to both sides inside. The support roller group (11) consists of two rollers, with the thermal paper located at the outer end of the rollers.

3. The drying apparatus for thermal paper production according to claim 1, characterized in that: The supplementary drying mechanism also includes a track rod (12), which is connected inside the baking chamber (1). The track rod (12) is arranged parallel to the threaded rod (8), and the moving block (7) is slidably connected to the outer end of the track rod (12).

4. The drying apparatus for thermal paper production according to claim 1, characterized in that: The hot air box (2) consists of a fan and a heater. A gas-gathering hood (13) is connected to the side of the hot air box (2). One end of the gas-gathering hood (13) is a large opening and the other end is a small opening. The large opening is connected to the hot air box (2).

5. A drying apparatus for producing thermal paper according to claim 4, characterized in that: A connecting pipe (14) is connected between the small opening at the side end of the gas-gathering hood (13) and the support pipe (3), and a temperature sensor is installed inside the small opening at the side end of the gas-gathering hood (13).

6. A drying apparatus for producing thermal paper according to claim 4, characterized in that: The baking chamber (1) is equipped with an upper heating tube (15) and a lower heating tube (16). The thermal paper is located between the upper heating tube (15) and the lower heating tube (16). Both the upper heating tube (15) and the lower heating tube (16) are connected to the small opening at the side end of the gas gathering hood (13).

7. A drying apparatus for producing thermal paper according to claim 6, characterized in that: The upper heating tube (15) and the lower heating tube (16) are both inclined. The outer ends of the upper heating tube (15) and the lower heating tube (16) are connected to jet nozzles, which are inclined. The baking chamber (1) is connected to an exhaust box (17) on the side. The exhaust box (17) is located on the side of the upper heating tube (15) and the lower heating tube (16).

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