A dehumidification and drying device for the surface of a cooling roller

Abstract

This utility model discloses a dehumidification and drying device for the surface of a cooling roller, including a bracket with a crossbar supporting a protective shell. The protective shell has heating wires fixed to it via a mounting plate. A main shaft is rotatably mounted on the bracket and connected to a drive assembly via a mounting ring. The drive assembly includes an inner sliding plate, an outer sliding plate, and a support plate. A water-absorbing layer is installed at the arc-shaped end of the support plate. The main shaft is connected to the cooling roller via large and small gears and a belt, utilizing the speed difference to improve water absorption capacity. The water-absorbing layer and the cooling roller drive the protective components in the same direction. A telescopic rod and spring enhance the contact between the water-absorbing layer and the cooling roller. An electric heating controller regulates the temperature of the heating wires, and an appropriate gap is maintained between the water-absorbing layer and the heating wires to ensure a good drying effect. This device solves the problems of water vapor condensation on the surface of the cooling roller and related technical issues, ensuring printing production quality and stable equipment operation.

Description

Technical Field

[0001] This application relates to the field of cooling roller dehumidification technology, specifically to a cooling roller surface dehumidification and drying device. Background Technology

[0002] In the printing industry, cooling rollers play a crucial role in the production process, reducing the temperature of printing materials for rapid shaping and drying. However, due to the low surface temperature of the cooling rollers during operation, moisture from the surrounding environment easily condenses into water droplets on their surface. These water droplets not only affect the quality of printed materials, causing problems such as blurred patterns and uneven colors, but can also lead to corrosion and damage to printing equipment, shortening its lifespan. Traditional dehumidification methods for cooling rollers are often ineffective. For example, simple wiping is not only inefficient but also fails to maintain a consistently dry surface. Methods that use ventilation or heating devices may suffer from uneven dehumidification, high energy consumption, and interference with the printing process. Furthermore, when designing a dehumidification device for the cooling roller surface, it is necessary to consider how to achieve efficient dehumidification while avoiding damage to the cooling roller and other components, as well as how to ensure stable operation and convenient maintenance of the device.

[0003] Therefore, it is of great significance to develop a dehumidification and drying device for the surface of cooling rollers that can effectively solve the problem of water vapor condensation on the surface of cooling rollers, while also having the advantages of high-efficiency water absorption, good drying effect, protection of parts, precise temperature control, and easy maintenance and replacement. Summary of the Invention

[0004] In response to the above-mentioned technical problems, this application solves the problems of water vapor condensation on the surface of the cooling roller, poor water absorption effect, damage to parts due to hard contact between the water absorption layer and the cooling roller, and the problems of drying and circulating operation of the water absorption layer in the prior art.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a dehumidification and drying device for the surface of a cooling roller, comprising a support, on which multiple mounting crossbars are fixedly mounted, a protective shell is mounted on the mounting crossbars, and multiple mounting plates are fixedly mounted on the protective shell. Heating wires are supported on the mounting plates, and the heating wires are matched with the shape of the inner wall of the protective shell. A main shaft is rotatably mounted on the support, and multiple mounting rings are fixedly mounted on the main shaft. Multiple sets of drive components are mounted on the mounting rings. The drive components include inner sliding plates, outer sliding plates, and support plates. Multiple inner sliding plates are fixedly mounted on the mounting rings, and an outer sliding plate is slidably mounted on each inner sliding plate. A support plate is fixedly mounted on the outer sliding plate, and the end of the support plate away from the mounting ring is arc-shaped, with a water-absorbing layer installed at the arc-shaped end.

[0006] To better realize this application, a large gear is fixedly mounted on the main shaft, a rotating shaft is rotatably mounted on the bracket, and a small gear is fixedly mounted on the small gear, with the small gear meshing with the large gear.

[0007] To better realize this application, the number of teeth of the large gear is much greater than the number of teeth of the small gear.

[0008] To better realize this application, a telescopic rod is further fixedly installed on the mounting ring, the telescopic rod is fixedly connected to the support plate, and a spring is sleeved on the telescopic rod, with the two ends of the spring being fixedly connected to the mounting ring and the support plate respectively.

[0009] To better realize this application, the mounting ring is further provided with six sets of drive components, and the arc-shaped end angle of the support plate is sixty degrees.

[0010] To better realize this application, the distance between the water-absorbing layer and the heating wire is further 50mm-80mm.

[0011] To better realize this application, an electric heating controller is further fixedly installed on the bracket, and the electric heating controller is fixedly connected to both ends of the heating wire.

[0012] The technical solution provided in this application has the following advantages compared with the prior art:

[0013] 1. The spindle of this application drives the drive assembly to rotate, and the water-absorbing layer on the support plate circulates to absorb water droplets on the surface of the cooling roller. The water is then dried by the heat released by the heating wires inside the protective shell, continuously dehumidifying and drying the cooling roller to ensure efficient printing production and product quality.

[0014] 2. The speed difference formed by the large and small gear transmissions in this application allows the water-absorbing layer to be in contact with the surface of the cooling roller for a longer period of time, thereby improving the water absorption capacity; the telescopic rod and spring structure enhance the contact between the water-absorbing layer and the surface of the cooling roller, further improving the water absorption effect.

[0015] 3. The design of the water-absorbing layer and the cooling roller in this application is driven in the same direction to avoid the large friction caused by hard contact, so that the water-absorbing layer can smoothly pass through the highest point of the cooling roller surface, effectively protecting the water-absorbing layer, the cooling roller and other related components, extending the service life of the device and reducing maintenance costs.

[0016] 4. A gap of 50mm-80mm is provided between the water-absorbing layer and the heating wire in this application to ensure that hot air flows between the two, improve the drying effect, ensure that the water-absorbing layer can continuously and efficiently circulate, and maintain the dry state of the cooling roller surface.

[0017] 5. The electric heating controller of this application precisely adjusts the current or voltage of the heating wire based on the feedback from the temperature sensor to achieve stable control of the heating temperature, which not only meets the requirements of drying the water-absorbing layer, but also ensures the safe operation of the device and does not have a negative impact on printing production.

[0018] 6. This application features six sets of drive components on the mounting ring, facilitating the replacement and maintenance of individual drive components and the water absorption layer. Even if one set malfunctions, the others will continue to operate normally, ensuring the dehumidification and drying capability of the cooling roller surface and reducing production interruptions caused by equipment failure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this application;

[0020] Figure 2 for Figure 1 Enlarged view of the local structure at point A;

[0021] Figure 3 This is a side view of this application;

[0022] Figure 4 This is a cross-sectional view of this application;

[0023] Figure 5 This is a schematic diagram of the heating wire structure of this application;

[0024] Figure 6 for Figure 5 Enlarged view of the local structure at point C;

[0025] In the diagram: 101-Bracket; 102-Main shaft; 103-Mounting crossbar; 104-Protective shell; 105-Electric heating controller; 106-Heating wire; 107-Mounting plate; 108-Mounting ring; 109-Inner sliding plate; 110-Outer sliding plate; 111-Support plate; 112-Water-absorbing layer; 113-Telescopic rod; 114-Spring; 115-Large gear; 116-Small gear; 117-Rotating shaft; 118-Belt; 119-Cooling roller. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0028] like Figures 1 to 6As shown, a dehumidification and drying device for the surface of a cooling roller includes a support 101. Multiple mounting crossbars 103 are fixedly mounted on the support 101. A protective shell 104 is mounted on each mounting crossbar 103. Multiple mounting plates 107 are fixedly mounted on the protective shell 104. Heating wires 106 are supported on the mounting plates 107. Each mounting plate 107 has a retaining ring. The heating wire 106 is inserted through a groove in the retaining ring, and its movement is restricted by the groove opening, thus fixing the heating wire 106. The heating wire 106 matches the shape of the inner wall of the protective shell 104 and is folded, i.e., a single heating wire. 106 is repeatedly bent on the arc structure until the other side of the protective shell 104. A main shaft 102 is rotatably mounted on the bracket 101. Multiple mounting rings 108 are fixedly mounted on the main shaft 102. Multiple sets of drive components are mounted on the mounting rings 108. The drive components include an inner slide plate 109, an outer slide plate 110, and a support plate 111. Multiple inner slide plates 109 are fixedly mounted on the mounting rings 108. An outer slide plate 110 is slidably mounted on each inner slide plate 109. A support plate 111 is fixedly mounted on the outer slide plate 110. The end of the support plate 111 away from the mounting rings 108 is arc-shaped, and an absorbent layer 112 is mounted on the arc-shaped end.

[0029] Specifically, during the printing production process, water vapor easily condenses on the surface of the cooling roller due to temperature changes, affecting product quality. In use, the main shaft 102 is controlled to rotate with the cooling roller 119. The main shaft 102 drives three drive components to rotate through three mounting rings 108. Thus, the support plates 111 installed on the multiple drive components can circulate and absorb and remove the water droplets condensed on the outer surface of the cooling roller 119. When the support plate 111 moves into the coverage area of ​​the protective shell 104, heat energy is released by energizing the heating wire 106 to heat the air. As the support plate 111 gradually moves within the range of the protective shell 104, the hot air dries the support plate 111. Then, the support plate 111 is driven to circulate, thereby continuously dehumidifying and drying the cooling roller 119 in reverse, ensuring the efficiency of printing paper production and product quality.

[0030] like Figure 1 and Figure 2 As shown, a large gear 115 is fixedly mounted on the main shaft 102, a rotating shaft 117 is rotatably mounted on the bracket 101, and a small gear 116 is fixedly mounted on the small gear 116, which meshes with the large gear 115.

[0031] like Figure 3 As shown, the number of teeth of the large gear 115 is much greater than the number of teeth of the small gear 116.

[0032] Specifically, a pulley is provided on the rotating shaft 117, and a pulley is also provided on the cooling roller 119. A belt 118 connects the rotating shaft 117 and the pulleys of the cooling roller 119, thereby transmitting power from the cooling roller 119 to the rotating shaft 117, causing the rotating shaft 117 to rotate on the support 101. The rotating shaft 117 drives the pinion 116 to rotate. Through the meshing relationship between the pinion 116 and the large gear 115, the large gear 115 and the main shaft 102 are driven to rotate on the support 101. Because the transmission ratio between the large gear 115 and the pinion 116 is relatively large... Therefore, the small gear 116, the rotating shaft 117, and the cooling roller 119 rotate at a relatively fast speed, while the large gear 115 and the main shaft 102 rotate at a relatively slow speed. Consequently, the water-absorbing layer 112 on the support plate 111 rotates slowly via the electric heating controller 105 on the main shaft 102, creating a speed difference between the water-absorbing layer 112 and the surface of the cooling roller 119. This speed difference enhances the absorption capacity of the water-absorbing layer 112 on the surface of the cooling roller 119, ensuring absorption through prolonged contact and avoiding incomplete or no absorption due to short contact time.

[0033] After power is transmitted through belt 118, the pinion 116, shaft 117, and cooling roller 119 rotate in the same direction. However, because the large gear 115 meshes with the pinion 116, its rotation direction is opposite to that of the pinion 116 and cooling roller 119. Consequently, the rotation direction of components such as the main shaft 102 and the absorbent layer 112 is also opposite to that of the cooling roller 119. Therefore, the absorbent layer 112 and the cooling roller 119 are driven in one direction, not in opposite directions. Figure 4 As shown, if the cooling roller 119 rotates counterclockwise, the absorbent layer 112 rotates clockwise. If there is a piece of paper between the absorbent layer 112 and the cooling roller 119, the rotation direction of the absorbent layer 112 and the cooling roller 119 will drive the paper to be fed to the left. There will be no large friction due to the reverse contact force. Therefore, in this way, the absorbent layer 112 can smoothly pass through the highest point of the surface of the cooling roller 119, avoiding damage to the parts due to hard contact.

[0034] like Figure 5 and Figure 6 As shown, a telescopic rod 113 is fixedly installed on the mounting ring 108. The telescopic rod 113 is fixedly connected to the support plate 111. A spring 114 is sleeved on the telescopic rod 113. The two ends of the spring 114 are fixedly connected to the mounting ring 108 and the support plate 111, respectively.

[0035] Specifically, the position of the support plate 111 is adjusted by installing a telescopic rod 113 and a spring 114 between the electric heating controller 105 and the support plate 111. Figure 6As shown, in the initial state, the spring 114 on the telescopic rod 113 pushes the support plate 111 to extend outward. At the maximum distance, the six absorbent layers 112 form a circle, and the radius of this circle is greater than the distance between the axis of the main shaft 102 and the surface of the cooling roller 119. Therefore, when the absorbent layer 112 rotates onto the cooling roller 119, it will not make contact with the point closest to the main shaft 102. Instead, the inner slide plate 109 and the outer slide plate 110 tilt the absorbent layer 112 to contact the cooling roller 119. As the absorbent layer 112 continues to rotate, it is compressed due to the obstruction of the cooling roller 119, which in turn pushes the support plate 111 and the outer slide plate 110. The outer slide plate 110 slides on the inner slide plate 109, and the support plate 111 compresses the telescopic rod 113 and the spring 114. Figure 6 In the state shown, the driving component and the water-absorbing layer 112 that are in contact with the cooling roller 119 at the bottom are misaligned with the other driving components and the water-absorbing layer 112 due to the obstruction of the surface of the cooling roller 119, and move inward by one distance. In this way, the contact ability between the water-absorbing layer 112 and the surface of the cooling roller 119 is stronger, and the absorption capacity of water droplets is improved.

[0036] like Figure 6 As shown, the mounting ring 108 is provided with six sets of drive components, and the arc-shaped end angle of the support plate 111 is sixty degrees.

[0037] Specifically, the six sets of drive components are easy to replace and maintain, and the water absorption layer 112 is also easy to replace. So when a problem occurs with one drive component and water absorption layer 112, the other drive components and water absorption layer 112 can still work normally, ensuring the dehumidification and drying ability of the surface of the cooling roller 119.

[0038] like Figure 4 As shown, the distance between the absorbent layer 112 and the heating wire 106 is 50mm-80mm.

[0039] Specifically, an appropriate gap is provided between the water-absorbing layer 112 and the heating wire 106 to ensure that air flows between the water-absorbing layer 112 and the heating wire 106, thereby improving the flow capacity of hot air, thus improving the drying effect of the water-absorbing layer 112 and ensuring the ability of subsequent cycle operations.

[0040] like Figure 1 As shown, an electric heating controller 105 is fixedly installed on the bracket 101, and the electric heating controller 105 is fixedly connected to both ends of the heating wire 106.

[0041] Specifically, the electric heating controller 105 controls the current or voltage input to the heating wire 106 (usually a heating element such as a resistance wire) to regulate the heat generated by the heating wire. When the temperature sensor on the protective housing 104 detects that the temperature of the heated object or the environment is lower than the set value, the controller of the electric heating controller 105 increases the current output to the heating wire, thereby increasing the heating power and raising the temperature; conversely, when the temperature is higher than the set value, the controller reduces the current, reduces the heating power, and achieves stable temperature control.

[0042] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A dehumidification and drying device for the surface of a cooling roller, comprising a support (101), characterized in that: Multiple mounting crossbars (103) are fixedly installed on the bracket (101). A protective shell (104) is installed on the mounting crossbars (103). Multiple mounting plates (107) are fixedly installed on the protective shell (104). A heating wire (106) is supported on the mounting plate (107). The heating wire (106) matches the shape of the inner wall of the protective shell (104). A main shaft (102) is rotatably installed on the bracket (101). Multiple mounting rings (108) are fixedly installed on the main shaft (102). The mounting ring (108) is provided with multiple sets of drive components, including an inner slide plate (109), an outer slide plate (110), and a support plate (111). Multiple inner slide plates (109) are fixedly provided on the mounting ring (108), and an outer slide plate (110) is slidably provided on each inner slide plate (109). A support plate (111) is fixedly provided on the outer slide plate (110). The end of the support plate (111) away from the mounting ring (108) is arc-shaped, and an absorbent layer (112) is installed on this end.

2. The dehumidification and drying device for the surface of a cooling roller according to claim 1, characterized in that: A large gear (115) is fixedly mounted on the main shaft (102), a rotating shaft (117) is rotatably mounted on the bracket (101), and a small gear (116) is fixedly mounted on the small gear (116), which meshes with the large gear (115).

3. The dehumidification and drying device for the surface of a cooling roller according to claim 2, characterized in that: The number of teeth of the large gear (115) is much greater than the number of teeth of the small gear (116).

4. The dehumidification and drying device for the surface of a cooling roller according to claim 1, characterized in that: A telescopic rod (113) is fixedly installed on the mounting ring (108). The telescopic rod (113) is fixedly connected to the support plate (111). A spring (114) is sleeved on the telescopic rod (113). The two ends of the spring (114) are fixedly connected to the mounting ring (108) and the support plate (111) respectively.

5. The dehumidification and drying device for the surface of a cooling roller according to claim 1, characterized in that: The mounting ring (108) is provided with six sets of drive components, and the arc end angle of the support plate (111) is sixty degrees.

6. The dehumidification and drying device for the surface of a cooling roller according to claim 1, characterized in that: The distance between the absorbent layer (112) and the heating wire (106) is 50mm-80mm.

7. The dehumidification and drying device for the surface of a cooling roller according to claim 1, characterized in that: An electric heating controller (105) is fixedly installed on the bracket (101), and the electric heating controller (105) is fixedly connected to both ends of the heating wire (106).

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