Printing roller cooling device for printing equipment

Abstract

The invention provides a printing roller cooling device for printing equipment, and relates to the technical field of printing equipment, and the printing roller cooling device comprises an air cooler which is used for providing a cooling air source; the printing roller cooling device further comprises an air guide box, the air guide box is arranged at the air outlet end of the air cooler and used for guiding cooling air from the air cooler to the position between the two adjacent to-be-cooled printing rollers, the air guide box penetrates through the position between the two adjacent to-be-cooled printing rollers, and the two sides, facing the two printing rollers, of the air guide box are each provided with a plurality of air outlets. The invention aims to solve the problems of printing quality reduction, material deformation or equipment damage and the like caused by high temperature of the printing roller in the printing process, and ensures that the printing roller operates at the optimal working temperature by providing a stable and efficient cooling air source, so that the printing precision and stability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of printing equipment, and specifically to a printing roller cooling device for printing equipment, which aims to solve problems such as reduced printing quality, material deformation or equipment damage caused by high temperature of the printing roller during the printing process. By providing a stable and efficient cooling air source, it is ensured that the printing roller operates at an optimal working temperature, thereby improving the printing accuracy and stability. Background Art

[0002] In the printing industry, the printing roller is a core component, and its working performance directly determines the quality and efficiency of printed products. However, in the high-speed, continuous printing process, the printing roller will inevitably generate a lot of heat due to long-term contact and friction with ink, paper, etc. If this heat cannot be dissipated in time, the surface temperature of the printing roller will be too high, which will cause a series of problems. First, high temperature will reduce the adhesion of ink, making the printed pattern blurred and the color unclear, seriously affecting the visual effect of the printed product. Secondly, the printed material may deform under high temperature, such as paper warping and uneven ink drying, further affecting the printing accuracy and quality of the finished product. What's more serious is that continuous high temperature may also accelerate the aging of the printing roller, shorten its service life, and even cause equipment failure, increase maintenance costs and production downtime.

[0003] In traditional printing equipment, the cooling of printing rollers is often done by simple air cooling or water cooling, but these methods have problems such as low cooling efficiency, uneven cooling, complex equipment and high maintenance costs. Especially when the printing roller spacing is small or the printing equipment structure is compact, the traditional cooling method is difficult to effectively guide the cooling air or cooling water accurately to the surface of the printing roller, resulting in a significant reduction in the cooling effect. Therefore, the development of a device that can efficiently, evenly and conveniently cool the printing roller has become a technical problem that needs to be solved urgently in the printing industry. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention proposes a printing roller cooling device for printing equipment, which particularly adopts an air guide box extension cooling technology, aiming to achieve efficient and uniform cooling of the printing roller by accurately controlling the flow direction and distribution of cooling air.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: A printing roller cooling device for a printing device, comprising: A cooling fan, the cooling fan is used to provide a cooling air source; An air guide box is arranged at the air outlet end of the cold air fan, and is used to guide the cooling air from the cold air fan to between two adjacent printing rollers to be cooled. The air guide box passes between the two adjacent printing rollers to be cooled, and the air guide box is provided with a plurality of air outlets on both sides facing the two printing rollers.

[0006] In some embodiments, a spacing adjustment mechanism for adjusting the spacing between adjacent printing rollers is also included.

[0007] In some embodiments, the air cooler and the air guide box are positioned on the bracket of the printing roller through a hanging mechanism, and the hanging mechanism is an inverted L-shaped plate structure, one end of which is inverted on the bracket of the printing roller and the other end is fixed to the outer wall of the air cooler.

[0008] In some embodiments, the air guide box includes a front air guide portion close to the air outlet end of the air cooler and a rear air guide portion away from the air outlet end of the air cooler, wherein the ventilation width of the front air guide portion is greater than that of the rear air guide portion.

[0009] In some embodiments, the front air guide portion and the rear air guide portion have a bucket-shaped transition.

[0010] In some embodiments, an air guide plate is further included, wherein the air guide plate is hinged to an end of the air guide box away from the air cooler.

[0011] In some embodiments, the air guide plate and the air guide box are connected in a damping hinge manner.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention uses the design of the extended air guide box to allow the cooling air to be blown directly and evenly to the surface of the printing roller, thus avoiding the problem that the cooling air is difficult to accurately reach the printing roller in the traditional cooling method. At the same time, the air guide box is provided with a plurality of air outlets on both sides facing the two printing rollers, further ensuring that the cooling air can cover the surface of the printing roller in all directions without dead angles, thus greatly improving the cooling efficiency.

[0013] The present invention uses a special design of the air guide box, especially the width difference between the front air guide part and the rear air guide part and the bucket-shaped transition design, so that the cooling air can be fully diffused and buffered after entering the air guide box, and then blown to the surface of the printing roller in a more concentrated manner. This design not only improves the utilization rate of the cooling air, but also ensures that the cooling air can be evenly distributed on the surface of the entire printing roller, avoiding the occurrence of local overheating and achieving a uniform cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the installation of the printing roller and its bracket in the prior art; Figure 2 It is the installation schematic diagram of the present invention; Figure 3 It is a detailed structural diagram of the present invention; Figure 4 It is a schematic diagram of the position distribution of the present invention and the printing roller.

[0015] In the figure: 100, printing roller; 1, spacing adjustment mechanism; 2, air cooler; 3, air guide box; 301, front air guide part; 302, rear air guide part; 4, air guide plate. DETAILED DESCRIPTION

[0016] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0017] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0019] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] like Figure 1-4 As shown, this embodiment provides a printing roller cooling device for printing equipment, including a cooling fan 2, the cooling fan 2 is used to provide a cooling air source, the cooling fan 2 can be designed by combining a high-efficiency refrigeration compressor and a condenser, and can continuously and stably provide a cooling air source with a temperature controlled within a range of 15°C-25°C to ensure effective cooling of the printing roller 100, and the cooling fan 2 can preferably be built-in with an air purification filter to filter dust and impurities in the air, to ensure that the output cooling air is clean and free of pollution, and to avoid adverse effects on the printing process; It also includes an air guide box 3, which is arranged at the air outlet end of the air cooler 2 and is used to guide the cooling air from the air cooler 2 to between two adjacent printing rollers 100 to be cooled. The air guide box 3 passes between the two adjacent printing rollers 100 to be cooled. The air guide box 3 is provided with a plurality of air outlets on both sides facing the two printing rollers 100. The air guide box 3 can be made of lightweight and high-strength aluminum alloy material, and the surface is preferably rust-proofed, which not only ensures the stability of the structure but also reduces the overall weight, and is easy to install and maintain.

[0021] When working, the air cooler 2 serves as a cooling air source and generates low-temperature cooling air through its internal refrigeration system. The cooling air is driven by the air cooler 2 and is sent into the air guide box 3. The air guide box 3 is arranged at the air outlet end of the air cooler 2 and is designed to pass through the space between two adjacent printing rollers 100 to be cooled. When the cooling air enters the air guide box 3, since the air guide box 3 is provided with a plurality of air outlets on both sides facing the two printing rollers 100, these air outlets ensure that the cooling air can be blown evenly and dispersedly to the surface of the printing roller 100. When the cooling air passes through the gap between the printing rollers 100, it takes away the heat on the surface of the printing roller 100 as the printing roller 100 rotates, thereby achieving effective cooling of the printing roller 100.

[0022] The present invention provides a stable cooling air source through the air cooler 2, and combined with the precise guiding function of the air guide box 3, the cooling air can be directly and evenly guided between the two adjacent printing rollers 100 to be cooled. This design ensures that the cooling air can fully contact and take away the heat on the surface of the printing roller 100, greatly improving the cooling efficiency, and effectively avoiding problems such as reduced printing quality, material deformation or equipment damage caused by overheating of the printing roller 100. The air guide box 3 is provided with a plurality of air outlets on both sides facing the two printing rollers 100. This design ensures that the cooling air can cover the surface of the printing roller 100 in an all-round and dead-angle manner, achieving a uniform cooling effect, which helps to reduce the thermal stress of the printing roller 100 caused by the local excessive temperature, extend the service life of the printing roller 100, and improve the printing accuracy and stability.

[0023] In some embodiments, Figure 1-2As shown, it also includes a spacing adjustment mechanism 1 for adjusting the spacing between adjacent printing rollers 100. The spacing adjustment mechanism 1 may include an electric telescopic rod arranged on a printing roller 100 bracket, and a connecting seat connected to both ends of adjacent printing rollers 100; one end of the electric telescopic rod is fixed to the printing roller 100 bracket, and the other end is connected to the connecting seat. By controlling the telescopic length of the electric telescopic rod, the adjacent printing rollers 100 can be directly driven to move relative to each other along their axial direction, so as to flexibly adjust the spacing between the two. On the one hand, the spacing adjustment mechanism 1 enables the printing equipment to respond quickly to changes in printing tasks. Whether it is necessary to increase the spacing to adapt to thicker printing materials or to reduce the spacing to improve printing accuracy, it can be achieved through simple electronic control operations. On the other hand, the spacing adjustment mechanism 1 ensures that the air guide box 3 can easily and accurately extend between the printing rollers 100.

[0024] In some embodiments, Figure 2 As shown, the air cooler 2 and the air guide box 3 are positioned on the bracket of the printing roller 100 through a hanging mechanism. The hanging mechanism is an inverted L-shaped plate structure, one end of which is invertedly hung on the bracket of the printing roller 100, and the other end is fixed on the outer wall of the air cooler 2. The design of the hanging mechanism not only ensures that the air cooler 2 and the air guide box 3 can be firmly hung on the bracket of the printing roller 100 and aligned with the position between the two printing rollers 100, but also its inverted L-shaped plate structure also cleverly utilizes space to avoid interference with other components of the printing equipment. Preferably, the connection between the hanging mechanism and the bracket of the printing roller 100 can adopt a high-strength bolt or a quick locking device to ensure that it will not loosen or fall off due to vibration or external force during long-term operation, thereby ensuring the stability and reliability of the cooling device.

[0025] In some embodiments, Figure 3-4As shown, the air guide box 3 includes a front air guide portion 301 close to the air outlet end of the air cooler 2 and a rear air guide portion 302 away from the air outlet end of the air cooler 2, wherein the ventilation width of the front air guide portion 301 is greater than that of the rear air guide portion 302. This design enables the cooling air to be fully diffused and buffered in the front air guide portion 301 when entering the air guide box 3, and then be more centrally directed to the surface of the printing roller 100 through the gradually narrowed rear air guide portion 302. Specifically, the wider ventilation width of the front air guide portion 301 provides a larger diffusion space for the cooling air, so that the cooling air can be more evenly distributed on the cross section of the entire air guide box 3 after entering the air guide box 3. This helps to avoid the cooling air from forming a local vortex or dead angle in the air guide box 3, thereby improving the coverage rate and cooling effect of the cooling air on the surface of the printing roller 100. The design of the gradually narrowing rear air guide portion 302 enables the cooling air to be more centrally directed to the surface of the printing roller 100 after being diffused through the front air guide portion 301. This design not only improves the utilization rate of the cooling air, but also ensures that the cooling air can be accurately blown to every part of the printing roller 100, thereby achieving more precise cooling control.

[0026] In some embodiments, Figure 3-4 As shown, there is a bucket-shaped transition between the front air guide 301 and the rear air guide 302. This design cleverly utilizes the principle of fluid mechanics, so that the cooling air can smoothly and smoothly transition from the front air guide 301 to the rear air guide 302, further improving the flow efficiency and guidance of the cooling air. Specifically, the design of the bucket-shaped transition enables the cooling air to gradually change its flow direction along the curved surface of the transition area when entering the rear air guide 302 from the front air guide 301, thereby avoiding sudden turns and turbulence of the airflow. This design helps to maintain the stability and continuity of the airflow, so that the cooling air can be more evenly distributed throughout the rear air guide 302, thereby improving the cooling effect on the surface of the printing roller 100. It also effectively reduces the flow resistance of the cooling air in the air guide box 3. Compared with right-angle or acute-angle transitions, the curved surface design of the bucket-shaped transition can reduce the friction and collision between the airflow and the inner wall of the air guide box 3, thereby reducing wind resistance and energy consumption. This is of great significance for improving the overall performance of the cooling device and reducing operating costs.

[0027] In some embodiments, Figure 3-4 As shown, the printing roller 100 further includes an air guide plate 4, which is hinged at one end of the air guide box 3 away from the air cooler 2. The air guide plate 4 can rotate around the hinge point to adjust the outlet direction and diffusion angle of the cooling air, so that the cooling air can be blown more evenly to the entire surface of the printing roller 100 to achieve different cooling strategies.

[0028] In some embodiments, the air guide plate 4 is connected to the air guide box 3 by a damping hinge. This damping hinge design allows the air guide plate 4 to have moderate resistance during the rotation adjustment process, and can be maintained at the set angle position, and will not easily change position due to a slight touch of an external force or an airflow impact, thereby ensuring the stability of the outlet direction and diffusion angle of the cooling air. The damping hinge design provides moderate resistance so that the air guide plate 4 can remain firmly in this position after being adjusted to the desired angle. This avoids changes in the position of the air guide plate 4 due to equipment vibration, airflow impact or other external factors during the printing process, thereby ensuring the stability and continuity of the cooling air. And because the damping hinge provides a stable support force, the operator can more accurately control the position of the air guide plate 4 when adjusting its angle. This helps to achieve more sophisticated cooling air adjustment to meet the specific requirements of different printing tasks for cooling effects.

[0029] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A printing roller cooling device for a printing device, characterized in that: include: A cooling air fan (2), the cooling air fan (2) being used to provide a cooling air source; An air guide box (3), the air guide box (3) being arranged at the air outlet end of the air cooler (2) and being used for guiding the cooling air from the air cooler (2) to between two adjacent printing rollers (100) to be cooled, the air guide box (3) passing between the two adjacent printing rollers (100) to be cooled, and a plurality of air outlets being provided on both sides of the air guide box (3) facing the two printing rollers (100).

2. The printing roller cooling device for printing equipment according to claim 1, characterized in that: It also includes a spacing adjustment mechanism (1) for adjusting the spacing between adjacent printing rollers (100).

3. The printing roller cooling device for printing equipment according to claim 1, characterized in that: The air cooler (2) and the air guide box (3) are positioned and arranged on the bracket of the printing roller (100) via a hanging mechanism; the hanging mechanism is an inverted L-shaped plate structure, one end of which is hung upside down on the bracket of the printing roller (100) and the other end is fixed to the outer wall of the air cooler (2).

4. The printing roller cooling device for printing equipment according to claim 1, characterized in that: The air guide box (3) comprises a front air guide portion (301) close to an air outlet end of the air cooler (2) and a rear air guide portion (302) away from the air outlet end of the air cooler (2), wherein the ventilation width of the front air guide portion (301) is greater than that of the rear air guide portion (302).

5. The printing roller cooling device for printing equipment according to claim 4, characterized in that: There is a bucket-shaped transition between the front air guide portion (301) and the rear air guide portion (302).

6. The printing roller cooling device for printing equipment according to claim 1, characterized in that: It also comprises an air guide plate (4), wherein the air guide plate (4) is hingedly connected to an end of the air guide box (3) away from the air cooler (2).

7. A printing roller cooling device for printing equipment according to claim 6, characterized in that: The air guide plate (4) and the air guide box (3) are connected in a damping hinge manner.

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