A printing press circulating varnishing device
By introducing a temperature control device and a recycling system into the varnishing unit of the printing press, the problem of poor temperature control was solved, enabling precise temperature control and recycling of the varnishing liquid, improving the varnishing effect and the quality of printed products, and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIAONING XINHUA PRINTING CO LTD
- Filing Date
- 2025-08-25
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional printing press varnishing devices suffer from poor temperature control, leading to unstable performance of the varnishing liquid and affecting the varnishing effect.
Design a circulating varnishing device for a printing press. The device uses a temperature control unit connected to the inner cavity of the varnishing roller. Combined with a cooling box, a circulating water pump, and a coolant return pipeline, it can achieve precise control of the temperature of the varnishing roller and recycle the varnishing liquid through a recycling device and a filter chamber.
It achieves precise temperature control, ensuring that the varnish operates at the appropriate temperature, improving the varnishing effect and the quality of printed products, while reducing production costs.
Smart Images
Figure CN224447208U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of varnishing device technology, specifically a printing press cyclic varnishing device. Background Technology
[0002] As a key piece of equipment in the printing and packaging industry, varnishing machines are rapidly developing towards intelligent, environmentally friendly, high-precision, and multi-functional technologies. In the printing process, varnishing is a crucial step in improving the gloss and abrasion resistance of printed materials.
[0003] Traditional printing press varnishing devices have many problems, such as poor temperature control during the varnishing process, which leads to unstable performance of the varnishing liquid and affects the varnishing effect.
[0004] To address the aforementioned issues, we propose a circulating varnishing device for printing presses. Utility Model Content
[0005] The purpose of this invention is to provide a printing press cyclic varnishing device to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a printing press circulating varnishing device, comprising a main frame, an infeed conveyor belt, an outfeed conveyor belt, an integrated varnishing device, and a temperature control device;
[0007] The main frame is equipped with the feeding conveyor belt, the discharging conveyor belt, the varnishing integration device, and the temperature control device; one end of the feeding conveyor belt is rotatably connected to the varnishing integration device; one end of the discharging conveyor belt is rotatably connected to the varnishing integration device; the temperature control device is connected to the varnishing integration device.
[0008] The varnishing integration device includes a varnishing roller; the varnishing roller has an inner cavity; and the temperature control device is connected to the inner cavity of the varnishing roller.
[0009] Preferably, the temperature control device includes a cooling tank, a circulating water pump, a coolant return pipe, and a coolant inlet pipe; the cooling tank is disposed within the main frame body; the cooling tank includes a return port and an outlet; the return port of the cooling tank is connected to the inner cavity of the polishing roller through the coolant return pipe; the outlet of the cooling tank is connected to the input end of the circulating water pump; the output end of the circulating water pump is connected to the inner cavity of the polishing roller through the coolant inlet pipe.
[0010] Preferably, the polishing integrated device includes a support roller, two connecting plates, a conveyor belt main drive device, and a spraying device; the polishing pressure roller and the support roller are rotatably connected between the two connecting plates; one end of the polishing pressure roller is connected to a motor; the other end of the polishing pressure roller is connected to the connecting plate via a coupling; the conveyor belt main drive device is disposed on the side wall of the connecting plate; the drive end of the conveyor belt main drive device is connected to one end of the feeding conveyor belt and one end of the discharging conveyor belt via a pulley; the spraying device is connected between the two connecting plates.
[0011] Preferably, one end of the spraying device is connected to the output end of the recycling device; the input end of the top surface of the recycling device is connected to a filter chamber.
[0012] Preferably, the recycling device includes a collection tank, a liquid pump, a polishing liquid input pipe, and a liquid extraction pipe; the top of the collection tank is connected to the filter chamber; the input end of the liquid pump is connected to one end of the liquid extraction pipe; the other end of the liquid extraction pipe is connected to the collection tank; the output end of the liquid pump is connected to one end of the polishing liquid input pipe; and the other end of the polishing liquid input pipe is connected to the spraying device.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] Precise temperature control: By connecting the temperature control device to the inner cavity of the varnishing roller, the temperature of the varnishing roller can be precisely controlled, thereby ensuring that the varnishing liquid is applied at the appropriate temperature, improving the varnishing effect and the quality of printed materials.
[0015] Coating liquid recycling: A recycling device and a filter chamber are installed to recycle and filter the used coating liquid. The filtered coating liquid is then pumped back to the spraying device for reuse, realizing the recycling of the coating liquid and reducing production costs. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0017] Figure 2 for Figure 1 Enlarged cross-section diagram at point A.
[0018] In the diagram: 1-Main frame, 2-Feeding conveyor belt, 3-Discharge conveyor belt, 4-Glossing integrated device, 41-Connecting plate, 42-Glossing pressure roller, 43-Support roller, 44-Main drive device for conveyor belt, 45-Spraying device, 5-Filter chamber, 6-Recovery device, 61-Collection box, 62-Liquid pump, 63-Glossing liquid input pipe, 64-Liquid extraction pipe, 7-Temperature control device, 71-Cooling tank, 72-Circulating water pump, 73-Cooling liquid return pipe, 74-Cooling liquid inlet pipe. Detailed Implementation
[0019] 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.
[0020] Please see Figure 1 , Figure 2 This utility model provides a technical solution: a printing machine circulating varnishing device, including a main frame 1, a feeding conveyor belt 2, a discharging conveyor belt 3, a varnishing integrated device 4, and a temperature control device 7.
[0021] The main frame 1 serves as the supporting structure for the entire device. The main frame 1 is equipped with the feeding conveyor belt 2, the discharging conveyor belt 3, the varnishing integrated device 4, and the temperature control device 7. One end of the feeding conveyor belt 2 is rotatably connected to the varnishing integrated device 4, used to transport the printed materials to be varnished to the varnishing integrated device 4 for varnishing processing; one end of the discharging conveyor belt 3 is rotatably connected to the varnishing integrated device 4, used to convey the varnished printed materials out of the device.
[0022] Varnishes are generally considered to be relatively easy-to-dry liquids. The optimal temperature range for varnishes is between 5℃ and 30℃. If the temperature is too high, they will dry out easily, and if the temperature is too low, they will freeze easily.
[0023] The varnishing integrated device 4 is the core component of this device, including a varnishing roller 42, a support roller 43, two connecting plates 41, a conveyor belt main drive device 44, and a spraying device 45. The varnishing roller 42 and the support roller 43 are rotatably connected between the two connecting plates 41. The varnishing roller 42 has an inner cavity, and the temperature control device 7 is connected to the inner cavity of the varnishing roller 42. The temperature of the varnishing roller 42 is controlled by introducing coolant or heating medium into the inner cavity, thereby affecting the temperature of the varnishing liquid. A motor is connected to one end of the varnishing roller 42 to provide power for its rotation. The spraying device 45 includes pipes and spray heads, which can make the varnishing oil on the varnishing roller 42 more evenly distributed.
[0024] The other end of the varnishing roller 42 is connected to the connecting plate 41 via a coupling to ensure the stability of the rotation of the varnishing roller 42. The conveyor belt drive device 44 is located on the side wall of the connecting plate 41, and its drive end is connected to one end of the feeding conveyor belt 2 and one end of the discharging conveyor belt 3 via a pulley, providing power for the operation of the feeding conveyor belt 2 and the discharging conveyor belt 3. The spraying device 45 is connected between the two connecting plates 41 for spraying varnishing liquid onto the surface of the printed material between the varnishing roller 42 and the support roller 43. The temperature control device 7 is connected to the varnishing integrated device 4 and is used to control the temperature of the varnishing roller 42 during the varnishing process.
[0025] The temperature control device 7 includes a cooling tank 71, a circulating water pump 72, a coolant return pipe 73, and a coolant inlet pipe 74. The cooling tank 71 is located within the main frame 1 and includes a return port and an outlet. The return port of the cooling tank 71 is connected to the inner cavity of the polishing roller 42 via the coolant return pipe 73, allowing used coolant to return to the cooling tank 71. The outlet of the cooling tank 71 is connected to the input end of the circulating water pump 72, and the output end of the circulating water pump 72 is connected to the inner cavity of the polishing roller 42 via the coolant inlet pipe 74. The circulating water pump 72 draws coolant from the cooling tank 71 and delivers it to the inner cavity of the polishing roller 42, achieving coolant circulation and thus controlling the temperature of the polishing roller 42. The return port of the cooling tank 71 is positioned higher than the outlet of the cooling tank 71. The varnishing roller 42 is primarily made of a material with a high thermal conductivity. Coolant from the cooling box 71 enters the inner cavity of the varnishing roller 42, cooling it down to a suitable temperature range after prolonged use, ensuring the varnish is in optimal condition. The cooling box 71 also includes a temperature control device to maintain a constant temperature for the coolant. The specific cooling process and related cooling structures within the cooling box 71 are not detailed in this invention, as they are existing technologies.
[0026] One end of the spraying device 45 is connected to the output end of the recycling device 6, and the top input end of the recycling device 6 is connected to the filter chamber 5. The recycling device 6 includes a collection tank 61, a liquid pump 62, a polishing liquid input pipe 63, and a liquid extraction pipe 64. The top of the collection tank 61 is connected to the filter chamber 5 for collecting the polishing liquid filtered from the filter chamber 5. The input end of the liquid pump 62 is connected to one end of the liquid extraction pipe 64, and the other end of the liquid extraction pipe 64 is connected to the collection tank 61. The output end of the liquid pump 62 is connected to one end of the polishing liquid input pipe 63, and the other end of the polishing liquid input pipe 63 is connected to the spraying device 45. The liquid pump 62 extracts the polishing liquid from the collection tank 61 and transports it to the spraying device 45 through the polishing liquid input pipe 63, realizing the recycling of the polishing liquid. The height of the liquid extraction pipe 64 is lower than the height of the polishing liquid input pipe 63 to avoid the situation where the remaining liquid cannot be extracted due to insufficient liquid level.
[0027] Working principle:
[0028] Preparation before startup: Check whether the coolant in the cooling tank 71 is sufficient. If it is insufficient, add an appropriate amount of coolant. Check whether the collection tank 61 has sufficient polishing liquid. If it is insufficient, add new polishing liquid.
[0029] Start-up procedure: First, start the circulating water pump 72 in the temperature control device 7 to circulate the coolant within the inner cavity of the polishing roller 42, adjusting the temperature of the polishing roller 42 to a suitable operating temperature. Then, start the main drive device 44 of the conveyor belt to start the feeding conveyor belt 2 and the discharging conveyor belt 3. Next, start the liquid pump 62 in the recovery device 6 to transport the polishing liquid in the collection box 61 to the spraying device 45. Finally, start the motor at one end of the polishing roller 42 to start the roller rotating.
[0030] Varnishing Operation: The printed material to be varnished is placed on the feeding conveyor belt 2. The printed material enters the varnishing integrated device 4 along with the feeding conveyor belt 2. As it passes between the varnishing pressure roller 42 and the support roller 43, the spraying device 45 sprays varnishing liquid onto the surface of the printed material between the varnishing pressure roller 42 and the support roller 43. The varnishing pressure roller 42 performs a calendering treatment on the printed material, completing the varnishing operation. The varnished printed material is then conveyed out of the device along the discharge conveyor belt 3.
[0031] Stopping device: After the varnishing operation is completed, first stop the motor at one end of the varnishing roller 42, then stop the main drive device 44 of the conveyor belt, so that the feed conveyor belt 2 and the discharge conveyor belt 3 stop running. Next, stop the liquid pump 62 in the recycling device 6, and finally stop the circulating water pump 72 in the temperature control device 7.
[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider 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 printing press circulating glazing device, characterized in that, It includes a main frame (1), a feeding conveyor belt (2), a discharging conveyor belt (3), a polishing integrated device (4), and a temperature control device (7); The main frame (1) is provided with the feeding conveyor belt (2), the discharging conveyor belt (3), the polishing integration device (4), and the temperature control device (7); one end of the feeding conveyor belt (2) is rotatably connected to the polishing integration device (4); one end of the discharging conveyor belt (3) is rotatably connected to the polishing integration device (4); the temperature control device (7) is connected to the polishing integration device (4). The varnishing integration device (4) includes a varnishing roller (42); the varnishing roller (42) is provided with an inner cavity; the temperature control device (7) is connected to the inner cavity of the varnishing roller (42).
2. A circulating glazing device for a printing press according to claim 1, characterized in that, The temperature control device (7) includes a cooling tank (71), a circulating water pump (72), a coolant return pipe (73), and a coolant inlet pipe (74); the cooling tank (71) is located inside the main frame (1); the cooling tank (71) includes a return port and an outlet; the return port of the cooling tank (71) is connected to the inner cavity of the polishing roller (42) through the coolant return pipe (73); the outlet of the cooling tank (71) is connected to the input end of the circulating water pump (72); the output end of the circulating water pump (72) is connected to the inner cavity of the polishing roller (42) through the coolant inlet pipe (74).
3. A circulating glazing device for a printing press according to claim 1, characterized in that, The polishing integrated device (4) includes a support roller (43), two connecting plates (41), a conveyor belt main drive device (44), and a spraying device (45); the polishing pressure roller (42) and the support roller (43) are rotatably connected between the two connecting plates (41); one end of the polishing pressure roller (42) is connected to a motor; the other end of the polishing pressure roller (42) is connected to the connecting plate (41) through a coupling; the conveyor belt main drive device (44) is disposed on the side wall of the connecting plate (41); the drive end of the conveyor belt main drive device (44) is connected to one end of the feeding conveyor belt (2) and one end of the discharging conveyor belt (3) through a pulley; the spraying device (45) is connected between the two connecting plates (41).
4. A circulating glazing device for a printing press according to claim 3, characterised in that, One end of the spray device (45) is connected to the output end of the recycling device (6); the top input end of the recycling device (6) is connected to the filter chamber (5).
5. A circulating glazing device for a printing press according to claim 4, wherein, The recycling device (6) includes a collection tank (61), a liquid pump (62), a polishing liquid input pipe (63), and a liquid extraction pipe (64); the top of the collection tank (61) is connected to the filter chamber (5); the input end of the liquid pump (62) is connected to one end of the liquid extraction pipe (64); the other end of the liquid extraction pipe (64) is connected to the collection tank (61); the output end of the liquid pump (62) is connected to one end of the polishing liquid input pipe (63); the other end of the polishing liquid input pipe (63) is connected to the spraying device (45).