A fruit and vegetable fresh-keeping packaging paper drying and peeling device
Patent Information
- Application Number
- CN202522290340.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-29
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-10-29
AI Technical Summary
其一，烘干机构加热方式不合理，多数采用单组加热管或局部热风直吹设计，导致烘干区域温度梯度差异显著，靠近加热源的区域易出现包装纸烘干过度，表现为纸张脆化、抗撕裂强度降低，远离加热源的区域则烘干不彻底，涂层呈黏连状态，后续剥离时易发生涂层转移，污染承载基材且需额外清理，增加生产工序；其二，剥离机制落后，人工辅助剥离需操作人员手持工具沿基材边缘逐步分离，效率低下且人工力度难以把控，易因用力不均导致包装纸撕裂，破损率高达 8%-12%；简单机械剥离则多依赖固定刀片或橡胶辊挤压分离，缺乏自适应调节能力，当包装纸厚度或基材黏性存在微小波动时，极易出现剥离不彻底或纸张拉伸变形的情况；其三，烘干与剥离机构的传送衔接存在断层，两者之间的传送辊高度、速度未实现同步联动，包装纸从烘干机构输出后，进入剥离机构前易因张力不稳定出现褶皱，部分区域甚至发生偏移，导致后续剥离时受力不均，进一步加剧破损问题，同时偏移的包装纸还需人工调整位置，中断生产流程，严重影响连续生产效率
1、烘干均匀性提升：多组交错分布的加热组件配合保温结构，结合温度传感器的实时调控，使烘干箱体内温度波动≤±2℃，基材烘干均匀度提升90%以上，有效避免局部烘干缺陷。
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Figure CN224784623U_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of fruit and vegetable preservation packaging paper production equipment, specifically to a fruit and vegetable preservation packaging paper drying and peeling device. Background Technology
[0002] In the production process of fruit and vegetable preservation packaging paper, the packaging paper coated with a preservation coating needs to be dried first, and then peeled off from the substrate to form a finished product that can be used for fruit and vegetable packaging. The drying process requires precise control of temperature, airflow, and drying time to ensure that the preservation coating is fully cured and does not decompose. If the drying is not up to standard, it will not only lead to decreased coating adhesion and easy peeling, but also damage the activity of antibacterial components, directly weakening the preservation effect of the packaging paper. The smoothness of the peeling process is related to production efficiency and yield. Peeling must achieve complete separation from the substrate without damaging the fiber structure of the packaging paper. Improper operation can easily result in rough edges, localized damage, and other problems in the finished product, failing to meet the requirements of sealing and appearance for fruit and vegetable packaging.
[0003] Currently, the drying and peeling equipment used in the industry generally suffers from three major problems that restrict production efficiency and product quality. First, the heating method of the drying mechanism is unreasonable. Most use a single heating element or a localized direct hot air blowing design, resulting in significant temperature gradient differences in the drying area. Areas near the heating source are prone to over-drying of the packaging paper, manifesting as paper brittleness and reduced tear strength, while areas far from the heating source are under-dryed, with the coating remaining sticky. During subsequent peeling, the coating is prone to transfer, contaminating the substrate and requiring additional cleaning, increasing production steps. Second, the peeling mechanism is outdated. Manual peeling requires operators to use tools to gradually separate the paper along the edge of the substrate, which is inefficient and difficult to control manually. Uneven force easily leads to tearing of the packaging paper, with a breakage rate as high as 8%-12%. %; Simple mechanical peeling relies mainly on fixed blades or rubber rollers for extrusion and separation, lacking adaptive adjustment capabilities. When there are slight fluctuations in the thickness of the packaging paper or the adhesiveness of the substrate, incomplete peeling or paper stretching and deformation are very likely to occur. Thirdly, there is a disconnect in the connection between the drying and peeling mechanisms. The height and speed of the conveying rollers between the two are not synchronized. After the packaging paper is output from the drying mechanism, it is prone to wrinkles due to unstable tension before entering the peeling mechanism. Some areas may even shift, resulting in uneven force during subsequent peeling, further aggravating the damage problem. At the same time, the shifted packaging paper needs to be manually adjusted, interrupting the production process and seriously affecting continuous production efficiency.
[0004] In view of the above problems, the industry urgently needs to develop an integrated drying and peeling device that can achieve uniform drying by optimizing the heating structure and design an adaptive pressure-adjustable peeling roller assembly to improve peeling efficiency and integrity. Utility Model Content
[0005] Therefore, the purpose of this utility model is to provide a fruit and vegetable preservation packaging paper drying and peeling device to solve the problems pointed out in the background art.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A fruit and vegetable preservation packaging paper drying and peeling device includes a frame, on which a feeding mechanism, a drying mechanism, a conveying and positioning mechanism and a peeling mechanism are arranged in sequence.
[0007] The feeding mechanism includes a feeding roller assembly and a substrate guide plate. The feeding roller assembly consists of two sets, upper and lower, which are symmetrically distributed. The feeding roller assembly is installed at the feeding end of the frame and is used to clamp the substrate. The substrate guide plate is inclined downward and set at the rear end of the feeding roller assembly. The feeding end of the substrate guide plate is aligned with the discharge end of the feeding roller assembly.
[0008] The drying mechanism includes a drying chamber, heating components, and a temperature sensor. The drying chamber is fixedly connected to the frame and located at the rear end of the substrate guide plate. The drying chamber has an inlet and an outlet at both ends, with the inlet aligned with the outlet of the substrate guide plate. A conveyor support plate is installed inside the drying chamber to convey the substrate into the chamber. The two ends of the conveyor support plate are the inlet and outlet of the drying chamber, respectively. The heating components are located inside the drying chamber and are evenly distributed on the upper and lower sides of the conveyor support plate. The temperature sensor is installed on the inner wall of the drying chamber to monitor the temperature inside the chamber in real time.
[0009] The positioning mechanism is fixedly connected to the frame and is located at the rear end of the discharge port of the drying chamber. The conveying positioning mechanism includes an active conveying roller, a driven conveying roller, a tensioning roller, and a motor. The active conveying roller and the driven conveying roller are installed sequentially on the frame behind the discharge port of the drying chamber. The active conveying roller is driven by the motor. The tensioning roller is located between the active conveying roller and the driven conveying roller. The tensioning roller has adjusting screws at both ends. The frame has a slide groove for the adjusting screws to pass through. The two ends of the tensioning roller are slidably connected to the slide groove on the frame through the adjusting screws. The end of the adjusting screw passes through the slide groove and is threaded with an adjusting bolt.
[0010] The peeling mechanism is fixedly connected to the frame and is located at the rear end of the conveying and positioning mechanism. The peeling mechanism includes a peeling roller and a peeling knife. The peeling roller is installed on the frame behind the driven conveying roller. The installation position of the peeling roller is lower than the installation position of the driven conveying roller. The peeling knife is inclined downward and located at the rear end of the peeling roller.
[0011] Furthermore, a guide plate is provided below the rear end of the peeling blade to receive the scraped-off finished packaging paper and guide it to the winding device.
[0012] Furthermore, the drying chamber is equipped with a mounting frame for installing the heating components. The heating components include multiple sets of electric heating tubes, which are fixedly installed on the mounting frame. The electric heating tubes on the upper and lower sides of the conveyor support plate are staggered.
[0013] Furthermore, the blade of the peeling knife is made of wear-resistant ceramic material, and the edge of the blade is polished, with a surface roughness Ra≤0.8μm.
[0014] Furthermore, the bottom of the frame is equipped with multiple casters.
[0015] Furthermore, the inner wall of the drying chamber is also lined with a layer of heat-insulating cotton, which is 5-8mm thick, and the surface of the heat-insulating cotton is covered with a layer of high-temperature resistant aluminum foil.
[0016] The beneficial effects of this utility model are as follows: 1. Improved drying uniformity: Multiple sets of staggered heating components, combined with the heat preservation structure and real-time control by temperature sensors, ensure that the temperature fluctuation inside the drying chamber is ≤±2℃, improving the drying uniformity of the substrate by more than 90% and effectively avoiding local drying defects.
[0017] 2. Precise conveying and positioning: The adjustable tension roller can flexibly adjust the tension according to the substrate material, and the conveying offset is controlled within ±0.5mm, providing a stable foundation for the subsequent peeling process.
[0018] 3. Optimized peeling efficiency and quality: The wear-resistant ceramic blade and reasonable peeling angle design reduce the peeling breakage rate of the finished product to less than 1%, and significantly extend the service life of the blade. At the same time, the guide plate ensures that the finished product is rolled up in an orderly manner.
[0019] 4. High equipment flexibility: The caster design allows the equipment to be moved flexibly according to production needs, adapting to different site layouts and reducing installation and adjustment costs. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0021] Figure 2 for Figure 1 Enlarged view of the structure of section A in the middle.
[0022] Figure 3 This is a schematic diagram of the drying mechanism of this utility model.
[0023] In the diagram: 1. Frame, 11. Casters, 2. Feeding mechanism, 21. Feeding roller assembly, 22. Substrate guide plate, 3. Drying mechanism, 31. Drying chamber, 32. Heating assembly, 33. Conveying support plate, 34. Temperature sensor, 35. Electric heating element, 36. Mounting bracket, 4. Conveying and positioning mechanism, 41. Active conveying roller, 42. Driven conveying roller, 43. Tensioning roller, 44. Motor, 45. Adjusting screw, 46. Slide groove, 47. Adjusting bolt, 5. Peeling mechanism, 51. Peeling roller, 52. Peeling knife, 53. Guide plate. Detailed Implementation
[0024] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.
[0025] like Figure 1-3 As shown, a drying and peeling device for fruit and vegetable preservation packaging paper includes a frame 1, with several casters 11 at the bottom of the frame 1. A feeding mechanism 2, a drying mechanism 3, a conveying and positioning mechanism 4, and a peeling mechanism 5 are sequentially arranged on the frame 1.
[0026] Feeding mechanism 2: includes a feeding roller group 21 and a substrate guide plate 22; the feeding roller group 21 is installed at the feeding end of the frame 1, and the feeding roller group 21 is symmetrically distributed vertically to clamp the substrate. The substrate guide plate 22 is inclined downward and disposed behind the feeding roller group 21, and the feeding end of the substrate guide plate 22 is aligned with the discharging end of the feeding roller group 21.
[0027] Drying mechanism 3 includes a drying chamber 31, a heating assembly 32, and a temperature sensor 34. The drying chamber 31 is fixedly connected to the frame 1 and is located behind the substrate guide plate 22. The drying chamber 31 has an inlet and an outlet at both ends, with the inlet aligned with the outlet of the substrate guide plate 22. A conveying support plate 33 is provided inside the drying chamber 31 to convey the substrate into the drying chamber 31. The two ends of the conveying support plate 33 are the inlet and outlet of the drying chamber 31, respectively. The heating assembly 32 is located inside the drying chamber 31 and is evenly distributed on the upper and lower sides of the conveying support plate 33. On the side, the drying chamber 31 is provided with a mounting bracket 36 for installing the heating component 32. The heating component 32 includes multiple sets of electric heating tubes 35, which are fixedly installed on the mounting bracket 36. The electric heating tubes 35 on the upper and lower sides of the conveying support plate 33 are staggered to ensure that the substrate on the conveying support plate 33 can be dried evenly. The temperature sensor 34 is installed on the inner wall of the drying chamber 31 and connected to an external controller to monitor the temperature inside the drying chamber 31 in real time and feed it back to the controller. The inner wall of the drying chamber 31 is also covered with a heat insulation cotton layer with a thickness of 5-8mm and the surface of the heat insulation cotton layer is covered with a high-temperature resistant aluminum foil layer.
[0028] The conveying and positioning mechanism 4 includes an active conveying roller 41, a driven conveying roller 42, a tensioning roller 43, and a motor 44. The active conveying roller 41 and the driven conveying roller 42 are sequentially installed on the frame 1 behind the discharge port of the drying chamber 31. The active conveying roller 41 is driven by the motor 44. The tensioning roller 43 is located between the active conveying roller 41 and the driven conveying roller 42. The tensioning roller 43 has adjusting screws 45 at both ends. The frame 1 has a slide groove 46 through which the adjusting screws 45 pass. The two ends of the tensioning roller 43 are slidably connected to the slide groove 46 on the frame 1 through the adjusting screws 45. The end of the adjusting screw 45 passes through the slide groove 46 and is threaded with an adjusting bolt 47, which cooperates with the adjusting screw 45 to adjust the position of the tensioning roller 43.
[0029] The peeling mechanism 5 is fixedly connected to the frame 1 and is located at the rear end of the conveying and positioning mechanism 4. The peeling mechanism 5 includes a peeling roller 51 and a peeling blade 52. The peeling roller 51 is installed on the frame 1 behind the driven conveying roller 42. The installation position of the peeling roller 51 is lower than the installation position of the driven conveying roller 42. The peeling blade 52 is inclined downward at the rear end of the peeling roller 51 and is used to peel the finished packaging paper from the substrate. The blade of the peeling blade 52 is made of wear-resistant ceramic material, and the edge of the blade is polished with a surface roughness Ra≤0.8μm. A guide plate 53 is also provided below the rear end of the peeling blade 52 to receive the scraped finished packaging paper and guide it to the winding device.
[0030] The working process of this utility model is as follows: Feeding: The fruit and vegetable preservation packaging paper substrate to be dried, such as paper substrate coated with antibacterial layer, is placed into the feeding roller group 21. The feeding roller group 21 clamps the substrate and guides it to the feeding port of the drying box 31 through the substrate guide plate 22.
[0031] Drying: Start the heating component 32 of the drying mechanism 3, set the drying temperature to 70℃, and the temperature sensor 34 monitors the temperature inside the drying chamber 31 in real time and feeds it back to the controller to ensure temperature stability; the substrate is conveyed on the conveying support plate 33 inside the drying chamber 31 at a speed of 8m / min, and the electric heating tubes 35 on the upper and lower sides of the support plate 33 are heated synchronously to achieve uniform drying.
[0032] Conveying and positioning: After drying, the substrate enters the conveying and positioning mechanism 4. The active conveying roller 41 drives the substrate to move. According to the tension of the substrate, the adjusting bolt 47 is rotated to make the tensioning roller 43 move up and down to ensure that the substrate is conveyed horizontally without deviation.
[0033] Peeling and winding: The substrate is conveyed from the conveying and positioning mechanism 4 to the peeling mechanism 5. As the peeling roller 51 rotates, the peeling knife 52 peels the finished packaging paper from the substrate. The peeled finished product is guided to the external winding device by the guide plate 53 to complete the winding.
Claims
1. A drying and peeling device for fruit and vegetable preservation packaging paper, characterized in that: Includes a frame (1), on which a feeding mechanism (2), a drying mechanism (3), a conveying and positioning mechanism (4) and a stripping mechanism (5) are sequentially arranged; The feeding mechanism (2) includes a feeding roller group (21) and a substrate guide plate (22). The feeding roller group (21) includes two groups, upper and lower, which are symmetrically distributed. The feeding roller group (21) is installed at the feeding end of the frame (1) and is used to clamp the substrate. The substrate guide plate (22) is inclined downward at the rear end of the feeding roller group (21). The feeding end of the substrate guide plate (22) is aligned with the discharge end of the feeding roller group (21). The drying mechanism (3) includes a drying chamber (31), a heating component (32), and a temperature sensor (34). The drying chamber (31) is fixedly connected to the frame (1) and is located at the rear end of the substrate guide plate (22). The drying chamber (31) has an inlet and an outlet at both ends. The inlet of the drying chamber (31) is aligned with the outlet of the substrate guide plate (22). The drying chamber (31) is provided with a conveying support plate (33) for conveying the substrate into the drying chamber (31). The two ends of the conveying support plate (33) are the inlet and outlet of the drying chamber (31), respectively. The heating component (32) is located inside the drying chamber (31) and is evenly distributed on the upper and lower sides of the conveying support plate (33). The temperature sensor (34) is installed on the inner wall of the drying chamber (31) for real-time monitoring of the temperature inside the drying chamber (31). The conveying and positioning mechanism (4) is fixedly connected to the frame (1) and is located at the rear end of the discharge port of the drying chamber (31). The conveying and positioning mechanism (4) includes an active conveying roller (41), a driven conveying roller (42), a tensioning roller (43), and a motor (44). The active conveying roller (41) and the driven conveying roller (42) are sequentially installed on the frame (1) behind the discharge port of the drying chamber (31). The active conveying roller (41) is driven by the motor (44). The tension roller (43) is located between the active conveyor roller (41) and the driven conveyor roller (42). The tension roller (43) has adjusting screws (45) at both ends. The frame (1) has a groove (46) through which the adjusting screws (45) pass. The tension roller (43) is slidably connected to the groove (46) on the frame (1) through the adjusting screws (45). The end of the adjusting screw (45) is threaded with an adjusting bolt (47) after passing through the groove (46). The peeling mechanism (5) is fixedly connected to the frame (1) and is located at the rear end of the conveying and positioning mechanism (4). The peeling mechanism (5) includes a peeling roller (51) and a peeling knife (52). The peeling roller (51) is installed on the frame (1) behind the driven conveying roller (42). The installation position of the peeling roller (51) is lower than the installation position of the driven conveying roller (42). The peeling knife (52) is inclined downward at the rear end of the peeling roller (51).
2. The fruit and vegetable preservation packaging paper drying and peeling device according to claim 1, characterized in that: Below the rear end of the peeling blade (52) is a guide plate (53) for receiving the scraped-off finished packaging paper and guiding it to the winding device.
3. The fruit and vegetable preservation packaging paper drying and peeling device according to claim 1, characterized in that: The drying chamber (31) is provided with a mounting frame (36) for installing the heating component (32). The heating component (32) includes multiple sets of electric heating tubes (35). The electric heating tubes (35) are fixedly installed on the mounting frame (36). The electric heating tubes (35) on the upper and lower sides of the conveying support plate (33) are staggered.
4. The fruit and vegetable preservation packaging paper drying and peeling device according to claim 1, characterized in that: The blade of the peeling knife (52) is made of wear-resistant ceramic material, and the edge of the blade is polished, with a surface roughness Ra≤0.8μm.
5. The fruit and vegetable preservation packaging paper drying and peeling device according to claim 1, characterized in that: The bottom of the frame (1) is provided with multiple casters (11).
6. The fruit and vegetable preservation packaging paper drying and peeling device according to claim 1, characterized in that: The inner wall of the drying chamber (31) is also covered with a heat-insulating cotton layer, and the surface of the heat-insulating cotton layer is covered with a high-temperature resistant aluminum foil layer.