Drying device for coated thermal printing sheet substrate

Abstract

The utility model relates to the related technical field of thermal printing sheets, in particular to a drying device for a coated thermal printing sheet substrate, which comprises a drying box, a fan fixedly mounted in the drying box, and an air spraying structure, and is characterized in that the drying box is symmetrically provided with an inlet and an outlet for conveying the substrate; the fan is rotationally mounted in the drying box and connected with the fan, and the inner sides of the fan are communicated; the plugging piece is slidably mounted at the outlet of the drying box and is connected with the fan through a transmission piece; the driving part is started to work to drive the air spraying structure to rotate, the air spraying structure does circular motion around the base plate, glue between the base plate and the fixing base can be evenly dried under the action of high temperature and strong wind, meanwhile, when the draught fan executes work, the air spraying structure is not prone to falling off, and the drying effect is good. The blocking piece is driven by the transmission piece to execute blocking work, dissipation of hot air in the drying box is reduced, and the drying effect of substrate coating is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal printing sheets, in particular to a drying device for a substrate of a thermal printing sheet after coating. Background Technique

[0002] The substrate of a thermal printing sheet is an important part of a thermal printer. After a certain current passes through the substrate, the components on the substrate will quickly generate high temperature. The medium coating on the printing paper will undergo a chemical reaction when encountering high temperature and show color. The processing of the substrate generally includes: washing, coating, drying, exposure and etching. Among them, drying after coating the substrate generally often adopts three methods: hot air drying method, infrared drying method and microwave drying method. Compared with the hot air drying method, the infrared drying method has a higher cost, while the microwave drying method has uneven drying. In practice, the hot air drying method is more practical.

[0003] The existing hot air drying is to use a blower to send hot air into the oven to increase the temperature inside the oven, so as to evaporate the moisture or solvent on the surface of the coating. When using the hot air drying method, it is necessary to pay attention to controlling the drying temperature and time to avoid excessive drying on the surface of the coating, resulting in cracks or other quality problems. However, the existing hot air drying mechanism blows the heated gas from one side to the substrate, which is easy to generate turbulent flow, causing the liquid coated on the substrate to generate vortex beads due to the influence of turbulent flow, resulting in unstable coating. Some parts of the substrate are already dry and some are not, resulting in excessive heating of the already dry part after the undried area is dried and cracking occurs. Content of the Utility Model

[0004] The purpose of the utility model is to provide a drying device for a substrate of a thermal printing sheet after coating, so as to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A drying device for a substrate of a thermal printing sheet after coating, including a drying box, symmetrically arranged on the drying box are inlets and outlets for substrate transportation, and further includes a blower fixedly installed inside the drying box, and further includes a blowing structure rotatably installed inside the drying box, connected to the blower and communicating inside;

[0007] A plugging member is slidably installed at the outlet of the drying box and is connected to the blower through a transmission member;

[0008] A driving member is installed inside the drying box and is connected to the blower. When the driving member works, the blower guides the hot air inside the drying box into the blowing structure, and the blowing structure can rotate relative to the substrate to achieve uniform drying after the substrate is coated.

[0009] The drying device after coating the substrate of the thermal printing sheet as described above: The air spraying structure includes a connecting shaft rotatably installed inside the drying box. A cylindrical cavity is formed inside the connecting shaft. One end of the connecting shaft is fixedly installed with a ventilation plate. A cavity is formed inside the ventilation plate. A nozzle is provided at one end of the ventilation plate away from the connecting shaft. The connecting shaft is in internal communication with the ventilation plate and the inner side of the nozzle.

[0010] The drying device after coating the substrate of the thermal printing sheet as described above: A sleeve is rotatably installed on the connecting shaft. An annular groove is formed between the sleeve and the connecting shaft. The air outlet end of the blower is fixedly connected with a conduit. One end of the conduit away from the blower is fixedly connected with and penetrates through the sleeve.

[0011] The drying device after coating the substrate of the thermal printing sheet as described above: The blocking member includes a blocking plate slidably installed on the drying box. One side of the blocking plate facing the inside of the drying box is connected to the connecting shaft through the transmission member.

[0012] The drying device after coating the substrate of the thermal printing sheet as described above: The driving member includes a motor fixedly installed inside the drying box. An impeller shaft is rotatably installed in the blower. The output shaft of the motor is fixedly connected with the impeller shaft;

[0013] It further includes a first transmission shaft rotatably installed inside the drying box. The output shaft of the motor is rotationally connected to the first transmission shaft through a bevel gear set. The first transmission shaft is rotationally connected to the connecting shaft through a first belt.

[0014] The drying device after coating the substrate of the thermal printing sheet as described above: The transmission member includes a second transmission shaft rotatably installed inside the drying box. The second transmission shaft is rotationally connected to the connecting shaft through a second belt. A connecting plate is fixedly installed on the second transmission shaft. A through groove is formed on the connecting plate. A slider is slidably installed in the through groove. A spring is fixedly connected between the slider and the inner wall of the through groove. A first connecting rod is rotationally connected to one side of the slider;

[0015] It further includes a rotating shaft coaxially arranged with the second transmission shaft. The rotating shaft is fixedly installed inside the drying box. A first sleeve and a second sleeve are respectively arranged along the axial direction on the rotating shaft. The first sleeve is rotationally connected to the second sleeve. The first sleeve is rotatably installed on the rotating shaft. The second sleeve is slidably installed on the rotating shaft. A second connecting rod is rotatably installed on the second sleeve. One end of the second connecting rod away from the second sleeve is rotationally connected to the blocking plate.

[0016] The drying device after coating the substrate of the thermal printing sheet as described above: At least one strip-shaped limiting chute is formed on the rotating shaft, and a strip-shaped limiting slider that is slidably matched with the strip-shaped limiting chute is formed on the second sleeve.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: By starting the driving member to work, the driving member drives the fan to work, guiding the hot air inside the drying box into the air spraying structure. When the driving member works, it drives the air spraying structure to rotate, and the air spraying structure makes a circular motion around the fixed seat. Under the action of high temperature and strong wind, the glue between the substrate and the fixed seat can be evenly dried. At the same time, when the fan is working, the driving member drives the blocking member to perform the blocking work through the transmission member, reducing the dissipation of the hot air inside the drying box and accelerating the drying effect of the substrate coating. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the drying device after coating the substrate of the thermal printing sheet.

[0019] Figure 2 It is a schematic structural diagram inside the drying box of the drying device after coating the substrate of the thermal printing sheet.

[0020] Figure 3 It is a schematic structural diagram of the driving member and the air spraying structure of the drying device after coating the substrate of the thermal printing sheet.

[0021] Figure 4 It is a schematic structural diagram of the air spraying structure of the drying device after coating the substrate of the thermal printing sheet.

[0022] Figure 5 It is a schematic structural diagram of the transmission member of the drying device after coating the substrate of the thermal printing sheet.

[0023] Figure 6 It is a schematic structural diagram of the second sleeve and the rotating shaft of the drying device after coating the substrate of the thermal printing sheet.

[0024] In the figure: 1, drying box; 2, blocking plate; 3, track; 4, fixed seat; 5, fan; 6, motor; 7, impeller shaft; 8, bevel gear set; 9, first belt; 10, connecting shaft; 11, sleeve; 12, conduit; 13, ventilation plate; 14, nozzle; 15, first transmission shaft; 16, second transmission shaft; 17, connecting plate; 18, slider; 19, spring; 20, first connecting rod; 21, rotating shaft; 22, first sleeve; 23, second sleeve; 24, second connecting rod; 25, strip-shaped limiting chute; 26, strip-shaped limiting slider; 27, second belt. Detailed Embodiments

[0025] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. Like reference numerals in the drawings denote functionally identical or similar elements. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0026] As used herein, the term "exemplary" means "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior to or better than other embodiments.

[0027] In addition, for a better description of the present application, numerous specific details are given in the following specific embodiments. Those skilled in the art should understand that the present application can be implemented without some of these specific details. In some instances, methods, means, and elements well known to those skilled in the art are not described in detail so as to highlight the gist of the present application.

[0028] Please refer to Figures 1 - 6 , in an embodiment of the present utility model, a drying device for a thermosensitive printing sheet substrate after coating includes a drying box 1, a blower 5, a blowing structure, a plugging member, a driving member, and a transmission member.

[0029] Specifically, it includes;

[0030] Please refer to Figure 2 , Figure 3 , Figure 4 , the drying box 1, on which there are symmetrically arranged entrances and exits for substrate conveyance, further includes a blower 5 fixedly installed inside the drying box 1, and further includes a blowing structure rotatably installed inside the drying box 1, and the air inlet end of the blowing structure is connected to the air outlet end of the blower 5 through a pipeline;

[0031] The plugging member is slidably installed at the outlet of the drying box 1 and is connected to the blower 5 through a transmission member;

[0032] The driving member is installed inside the drying box 1 and is connected to the blower 5. When the driving member works, the blower 5 guides the hot air inside the drying box 1 into the blowing structure, and the blowing structure can rotate relative to the substrate to achieve uniform drying of the substrate after coating.

[0033] Among them, it should be noted that a heating device is fixedly installed inside the drying box 1, and the heating device is connected to the blower 5. The heating device heats the air inside the drying box 1, and under the action of high temperature and wind force, the drying of the substrate after coating is accelerated. Specifically, the heating device can adopt an existing structure, and this embodiment will not elaborate on it further (the heating device is not shown in the figure).

[0034] Of course, a track 3 is provided inside the drying oven 1 for conveying the fixing seat 4. After the substrate is coated, it is bonded to the fixing seat 4 and conveyed towards the inside of the drying oven 1 through the track 3. When it is conveyed to directly below the air spraying structure, the track 3 stops conveying. In this embodiment, the track 3 adopts an intermittent conveying method. When the track 3 conveys the fixing seat 4 to directly below the air spraying structure, it stops conveying, which is convenient for the air spraying structure to evenly blow air on the glue on the fixing seat 4. The method of controlling the track 3 belongs to a conventional design, and this embodiment does not make specific limitations thereon.

[0035] In this embodiment, when the fixing seat 4 is conveyed to directly below the air spraying structure, the driving member is started to work. The driving member drives the fan 5 to perform work, guiding the hot air inside the drying oven 1 into the air spraying structure. When the driving member works, it drives the air spraying structure to rotate, and the air spraying structure makes a circular motion around the fixing seat 4. Under the action of high temperature and strong wind, the glue between the substrate and the fixing seat 4 can be evenly dried. At the same time, when the fan 5 is performing work, the driving member drives the blocking member to perform blocking work through the transmission member, reducing the dissipation of hot air inside the drying oven 1 and accelerating the drying effect of the substrate coating.

[0036] Please refer to Figure 4 , the air spraying structure includes a connecting shaft 10, the connecting shaft 10 is rotatably installed inside the drying oven 1, a cylindrical cavity is formed inside the connecting shaft 10, a ventilation plate 13 is fixedly installed at one end of the connecting shaft 10, a cavity is formed inside the ventilation plate 13, a nozzle 14 is provided at one end of the ventilation plate 13 away from the connecting shaft 10, and the interiors of the connecting shaft (10), the ventilation plate (13), and the nozzle (14) are communicated to form an air spraying channel.

[0037] A sleeve 11 is rotatably installed on the connecting shaft 10, an annular groove is formed between the sleeve 11 and the connecting shaft 10, the air outlet end of the fan 5 is fixedly connected to a conduit 12, and one end of the conduit 12 away from the fan 5 is fixedly connected to the sleeve 11 and penetrates through the sleeve 11.

[0038] Furthermore, when the fan 5 works, the hot air absorbed from the heating device is guided into the connecting shaft 10 through the conduit 12 and then conveyed to the nozzle 14 through the ventilation plate 13, so that hot air is ejected from one end of the nozzle 14 facing the substrate. At the same time, when the driving member works, it drives the connecting shaft 10 to rotate. When the connecting shaft 10 rotates, it drives the ventilation plate 13 to rotate synchronously. When the ventilation plate 13 rotates, it drives the nozzle 14 to make a circular motion with the substrate as the center. The nozzle 14 is arranged in an inclined manner, so that the glue between the substrate and the fixing seat 4 can be evenly dried.

[0039] Among them, the conduit 12 is a rigid conduit, so that when the connecting shaft 10 rotates, the sleeve 11 is not affected. A plurality of through grooves are formed in the part of the connecting shaft 10 sleeved by the sleeve 11. When the connecting shaft 10 rotates, the hot air in the blower 5 enters the annular cavity between the connecting shaft 10 and the sleeve 11 through the conduit 12, and then enters the inner side of the connecting shaft 10 through the through grooves and the guiding nozzle 14 to realize the drying work after the substrate is coated.

[0040] Please refer to Figure 3 , the driving member includes a motor 6, the motor 6 is fixedly installed inside the drying box 1, an impeller shaft 7 is rotatably installed inside the blower 5, and the output shaft of the motor 6 is fixedly connected to the impeller shaft 7;

[0041] It also includes a first transmission shaft 15, the first transmission shaft 15 is rotatably installed inside the drying box 1, the output shaft of the motor 6 is rotationally connected to the first transmission shaft 15 through a bevel gear set 8, and the first transmission shaft 15 is rotationally connected to the connecting shaft 10 through a first belt 9.

[0042] Start the motor 6 to work. When the motor 6 works, it drives the output shaft to rotate. When the output shaft rotates, it drives the impeller shaft 7 to rotate, drives the blower 5 to work, and guides the hot air in the drying box 1 to the connecting shaft 10. When the output shaft rotates, it drives the first transmission shaft 15 to rotate through the bevel gear set 8. When the first transmission shaft 15 rotates, it drives the connecting shaft 10 to rotate through the first belt 9 to meet the driving requirements.

[0043] Please refer to Figure 4 and Figure 5 , the transmission member includes a second transmission shaft 16, the second transmission shaft 16 is rotatably installed inside the drying box 1, the second transmission shaft 16 is rotationally connected to the connecting shaft 10 through a second belt 27, a connecting plate 17 is fixedly installed on the second transmission shaft 16, through grooves are formed on the connecting plate 17, a slider 18 is slidably installed in the through grooves, springs 19 are fixedly connected to the inner walls of the through grooves and the slider 18, and a first connecting rod 20 is rotatably connected to one side of the slider 18;

[0044] It also includes a rotating shaft 21, the rotating shaft 21 is coaxially arranged with the second transmission shaft 16, the rotating shaft 21 is fixedly installed inside the drying box 1, a first sleeve 22 and a second sleeve 23 are respectively arranged on the rotating shaft 21 along the axial direction, the first sleeve 22 is rotationally connected to the second sleeve 23, the first sleeve 22 is rotatably installed on the rotating shaft 21, the second sleeve 23 is slidably installed on the rotating shaft 21, a second connecting rod 24 is rotatably installed on the second sleeve 23, and the end of the second connecting rod 24 far from the second sleeve 23 is rotationally connected to the plugging plate 2.

[0045] The plugging member includes a plugging plate 2 which is slidably installed on the drying box 1, and one side of the plugging plate 2 facing the inside of the drying box 1 is connected to the blower 5 through a transmission member.

[0046] Specifically, when the motor 6 is operating, the rotational speed of the output shaft is a gradually increasing process until it reaches the rated rotational speed of the output shaft. When the output shaft rotates, it drives the first transmission shaft 15 to rotate synchronously through the bevel gear set 8. The first transmission shaft 15 drives the connecting shaft 10 to rotate through the first belt 9. The connecting shaft 10 drives the second transmission shaft 16 to rotate through the second belt 27. When the second transmission shaft 16 rotates, it drives the connecting plate 17 to rotate synchronously. According to the centrifugal force, the rotational speed of the connecting plate 17 gradually increases, causing the slider 18 to move linearly in the through groove of the connecting plate 17, moving towards the side away from the second transmission shaft 16. When the slider 18 moves, it compresses the spring 19, and the spring 19 stores elastic potential energy when compressed. When the slider 18 moves, it rotates synchronously with the connecting plate 17. Under the action of the first connecting rod 20, it drives the first sleeve 22 to rotate and move. When the first sleeve 22 moves, it drives the second sleeve 23 to move synchronously. Under the limiting action of the rotating shaft 21, the second sleeve 23 can only move linearly along the axial direction of the rotating shaft 21. The second sleeve 23 moves towards the side of the second transmission shaft 16. At this time, it drives the plugging plate 2 to move through the second connecting rod 24, so that the plugging plate 2 performs the plugging work, reducing the dissipation of the hot air in the drying box 1 and accelerating the drying effect after the substrate is coated.

[0047] Preferably, at least one strip-shaped limiting chute 25 is formed on the rotating shaft 21, and a strip-shaped limiting slider 26 that is slidably engaged with the strip-shaped limiting chute 25 is formed on the second sleeve 23.

[0048] It should be noted that when the second sleeve 23 moves, the strip-shaped limiting slider 26 on the second sleeve 23 moves synchronously. With the limiting action of the strip-shaped limiting chute 25, the strip-shaped limiting slider 26 is slidably installed in the strip-shaped limiting chute 25, thereby realizing the sliding of the second sleeve 23 relative to the rotating shaft 21, and not affecting the movement of the strip-shaped limiting slider 26 with the movement of the second sleeve 23. Among them, under the limiting action of the strip-shaped limiting slider 26 and the strip-shaped limiting chute 25, when the first sleeve 22 rotates, the second sleeve 23 is not affected.

[0049] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0050] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A drying device for a thermal printing sheet substrate after coating, comprising a drying box (1), wherein the drying box (1) is symmetrically provided with an inlet and an outlet for conveying the substrate, and further comprising a fan (5) fixedly installed inside the drying box (1), characterized in that: It also includes an air injection structure, which is rotatably mounted inside the drying box (1) and connected to the air outlet end of the fan (5); A blocking member, slidably mounted at the outlet of the drying box (1) and connected to the fan (5) via a transmission member; A driving member is installed inside the drying box (1) and connected to the fan (5); when the driving member is in operation, the fan (5) guides the hot air inside the drying box (1) into the air spray structure, and the air spray structure can rotate relative to the substrate to achieve uniform drying of the substrate after coating.

2. A drying device for a thermal printing sheet substrate after coating according to claim 1, characterized in that: The air injection structure comprises a connecting shaft (10), the connecting shaft (10) being rotatably mounted inside the drying box (1), the connecting shaft (10) having a cylindrical cavity formed therein, a ventilation plate (13) being fixedly mounted on one end of the connecting shaft (10), the ventilation plate (13) having a cavity formed therein, a nozzle (14) being arranged on one end of the ventilation plate (13) away from the connecting shaft (10), and the interiors of the connecting shaft (10), the ventilation plate (13) and the nozzle (14) being connected to form an air injection channel.

3. A drying device for a thermal printing sheet substrate after coating according to claim 2, characterized in that: A sleeve (11) is rotatably mounted on the connecting shaft (10), an annular groove is formed between the sleeve (11) and the connecting shaft (10), a duct (12) is fixedly connected to the air outlet end of the fan (5), and an end of the duct (12) away from the fan (5) is fixedly connected to the sleeve (11) and passes through the sleeve (11).

4. A drying device for a thermal printing sheet substrate after coating according to claim 2, characterized in that: The blocking member comprises a blocking plate (2), the blocking plate (2) being slidably mounted on the drying box (1), and the side of the blocking plate (2) facing the interior of the drying box (1) being connected to the connecting shaft (10) via the transmission member.

5. A drying device for a thermal printing sheet substrate after coating according to claim 4, characterized in that: The driving member comprises a motor (6), the motor (6) being fixedly mounted inside the drying box (1), an impeller shaft (7) being rotatably mounted inside the fan (5), and an output shaft of the motor (6) being fixedly connected to the impeller shaft (7); It also includes a first transmission shaft (15), the first transmission shaft (15) is rotatably mounted inside the drying box (1), the output shaft of the motor (6) is rotatably connected to the first transmission shaft (15) via a bevel gear set (8), and the first transmission shaft (15) is rotatably connected to the connecting shaft (10) via a first belt (9).

6. A drying device for a thermal printing sheet substrate after coating according to claim 5, characterized in that: The transmission member comprises a second transmission shaft (16), the second transmission shaft (16) being rotatably mounted inside the drying box (1), the second transmission shaft (16) being rotatably connected to the connecting shaft (10) via a second belt (27), a connecting plate (17) being fixedly mounted on the second transmission shaft (16), a through groove being formed on the connecting plate (17), a slider (18) being slidably mounted in the through groove, a spring (19) being fixedly connected to the slider (18) and the inner wall of the through groove, and a first connecting rod (20) being rotatably connected to one side of the slider (18); The drying box (1) further comprises a rotating shaft (21), wherein the rotating shaft (21) is coaxially arranged with the second transmission shaft (16), the rotating shaft (21) is fixedly mounted inside the drying box (1), a first sleeve (22) and a second sleeve (23) are respectively arranged on the rotating shaft (21) along the axial direction, the first sleeve (22) is rotatably connected to the second sleeve (23), the first sleeve (22) is rotatably mounted on the rotating shaft (21), the second sleeve (23) is slidably mounted on the rotating shaft (21), a second connecting rod (24) is rotatably mounted on the second sleeve (23), and one end of the second connecting rod (24) away from the second sleeve (23) is rotatably connected to the blocking plate (2).

7. A drying device for a thermal printing sheet substrate after coating according to claim 6, characterized in that: At least one strip-shaped limiting sliding groove (25) is formed on the rotating shaft (21), and a strip-shaped limiting sliding block (26) that slidably cooperates with the strip-shaped limiting sliding groove (25) is formed on the second sleeve (23).

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