Double-sided oil coating device for sheet

Abstract

The invention provides a double-sided oil coating device for a sheet, and belongs to the technical field of sheet surface treatment. The double-face oil coating device comprises a frame, a conveying platform, an oil coating unit, a lower film winding and unwinding unit and an upper film winding and unwinding unit, the oil coating unit comprises a first oil coating part and a second oil coating part which are located on the conveying platform and sequentially distributed in the conveying direction in a spaced mode, and a discharging area of the conveying platform is located between the first oil coating part and the second oil coating part; a lower film in the lower film winding and unwinding unit is configured to be unwound by a lower film unwinding roller, oiled by a first oiling piece and wound by a lower film winding roller after the oiled surface of the lower film is attached to a sheet when the lower film passes through a discharging area; an upper film in the upper film winding and unwinding unit is configured to be unwound by an upper film unwinding roller, oiled by a second oiling piece and wound by an upper film winding roller after the oiling face of the upper film can be attached to the oiling face of a lower film, and by means of the double-face oiling device, the purpose that the two faces of a sheet are oiled automatically, accurately and comprehensively without turning over can be achieved.

Description

Technical Field

[0001] This application relates to the field of sheet surface treatment technology, and more specifically, to a double-sided oiling device for sheets. Background Technology

[0002] In order to effectively protect fiber sheets, it is necessary to apply oil to both sides of the fiber sheet. Currently, double-sided oiling of fiber sheets is mainly done manually. Specifically, the operator first applies oil to one side of the fiber sheet, and then flips it over to apply oil to the other side. However, the existing manual double-sided oiling has many defects, including: (1) manual oiling mainly relies on the operator's experience and feel, and cannot achieve micro-precise oil volume control; (2) the manual application force is uneven and the speed is inconsistent, resulting in uneven oil film thickness on the surface of the fiber sheet. Some areas have too thick an oil film, which is wasteful, while some areas have too thin an oil film, which does not play a protective role; (3) due to the fragile and easily cracked nature of fiber sheets, coupled with the need to flip the sheet during the manual oiling process, this process is very likely to cause the sheet to break and be damaged, affecting the product qualification rate. Therefore, there is an urgent need for a device that can automatically, accurately and comprehensively apply oil to both sides of fiber sheets without flipping, so as to improve the various problems existing in manual double-sided oiling. Summary of the Invention

[0003] The purpose of this application is to provide a double-sided oiling device for sheet materials. With the help of this double-sided oiling device, it is possible to achieve automatic, accurate and comprehensive oiling of both sides of the sheet material without flipping it over, thereby improving to a certain extent the various problems of manual double-sided oiling at present.

[0004] The embodiments of this application are implemented as follows: In a first aspect, embodiments of this application provide a double-sided oiling device for sheet material, including a frame, a conveying platform, an oiling unit, a lower film unwinding / rewinding unit, and an upper film unwinding / rewinding unit. The conveying platform is connected to the frame and is used to convey the sheet material. The oiling unit includes a first oiling component and a second oiling component located on the conveying platform and spaced apart sequentially along the conveying direction. The unloading area of ​​the conveying platform is located between the first oiling component and the second oiling component. The lower film unwinding / rewinding unit includes a lower film, a lower film unwinding roller, and a lower film winding roller. The lower film is configured to be unwound by the lower film unwinding roller, oiled by the first oiling component, and its oiled surface adheres to the sheet material when passing through the unloading area before being wound by the lower film winding roller. The upper film unwinding / rewinding unit includes an upper film, an upper film unwinding roller, and an upper film winding roller. The upper film is configured to be unwound by the upper film unwinding roller, oiled by the second oiling component, and its oiled surface adheres to the oiled surface of the lower film before being wound by the upper film winding roller.

[0005] In the above technical solution, the double-sided oiling device includes a frame, a conveying platform, an oiling unit, a lower film unwinding / rewinding unit, and an upper film unwinding / rewinding unit. The lower film is configured to be unwound by a lower film unwinding roller, and when passing through the first oiling component, its surface is coated with oil. When passing through the unloading area, its oiled surface adheres to the sheet before being wound up by the lower film unwinding roller. Simultaneously, the upper film is configured to be unwound by an upper film unwinding roller, and when passing through the second oiling component, its surface is coated with oil, allowing its oiled surface to adhere to the oiled surface of the lower film before being wound up by the upper film unwinding roller. The adhesion of the oiled surfaces of the upper and lower films forms a uniformly thick protective oil film layer on both the upper and lower surfaces of the sheet. This double-sided oiling device achieves automatic, precise, and comprehensive oiling of both sides of the sheet without the need for flipping, thereby improving to some extent the various problems associated with current manual double-sided oiling methods.

[0006] In some alternative embodiments, the double-sided coating apparatus further includes a laminating unit located downstream of the second coating member along the transport direction. The laminating unit is configured to laminate the upper film, sheet, and lower film after passing through the second coating member and before winding.

[0007] In the above technical solution, a composite unit is added downstream of the second oiling component in the double-sided oiling device. This unit can composite the upper film, sheet and lower film that are bonded together, which helps to further strengthen the bonding strength between the upper and lower surfaces of the sheet and the oiling surfaces of the upper and lower films, thereby forming a continuous and more uniform oil film protective layer on both the upper and lower surfaces of the sheet.

[0008] In some alternative embodiments, the unwinding and take-up unit further includes a first steering roller and a second steering roller, with the first steering roller located upstream of the first oiling member and the second steering roller located downstream of the second oiling member along the transport direction. The lower film is configured to be unwound by the lower film unwinding roller, turned by the first steering roller, oiled by the first oiling member, have its oiled surface attached to the sheet when passing through the unwinding area, and then turned by the second steering roller and wound up by the lower film take-up roller.

[0009] In the above technical solution, the lower film unwinding and rewinding unit is equipped with a first steering roller and a second steering roller and is set according to the above installation position so that the corresponding area of ​​the lower film and the transmission platform can be reasonably connected and cooperated, which helps the lower film to be transmitted more smoothly. At the same time, it can also reduce the risk of the lower film being damaged due to scratches during the transportation process.

[0010] In some alternative embodiments, the double-sided oiling device further includes a lower oil suction unit, which includes a lower nonwoven fabric, a lower nonwoven fabric unwinding roller, a lower nonwoven fabric take-up roller, and a third steering roller. The third steering roller is located downstream of the second steering roller. The lower nonwoven fabric is configured to be unwound by the lower nonwoven fabric unwinding roller, have a sheet attached to its upper surface as it passes downstream of the second steering roller, and be taken up by the lower nonwoven fabric take-up roller after being turned by the third steering roller.

[0011] In the above technical solution, the double-sided oiling device also includes a lower oil suction unit. Specifically, the lower oil suction unit includes a lower non-woven fabric, a lower non-woven fabric unwinding roller, a lower non-woven fabric winding roller, and a third steering roller, which are set according to the above installation positions. Before the lower film is wound up, the sheet is carried on the lower film and conveyed along the conveying platform. After the lower film is wound up by the second steering roller, the double-sided oiled sheet can be directly transferred to the lower non-woven fabric after being separated from the lower film and continue to be conveyed downstream along the conveying platform. At the same time, the non-woven fabric can also absorb and remove excess oil on the lower surface of the sheet.

[0012] In some alternative implementations, the transport platform further includes a composite assembly located between the second and third steering rollers along the transport direction, wherein the lower nonwoven fabric is configured to be unwound by the lower nonwoven unwinding roller, have a sheet attached to its upper surface as it passes downstream of the second steering roller, be composited with the sheet via the composite assembly, and be wound up by the lower nonwoven take-up roller after being turned by the third steering roller.

[0013] In the above technical solution, a composite component is added between the second and third steering rollers of the transmission platform. With the help of the composite component, the lower surface of the non-woven fabric and the sheet can be more closely attached, which helps to improve the degreasing effect.

[0014] In some alternative implementations, along the transport direction, the area of ​​the transport platform located between the second steering roller and the composite assembly is also provided with a flattening element, which is configured to flatten the underlying nonwoven fabric.

[0015] In the above technical solution, a flattening component is added between the second steering roller and the composite component in the transmission platform. This can reduce the risk of wrinkles appearing on the lower nonwoven fabric during the conveying process, so that the lower nonwoven fabric and the lower surface of the sheet can be more closely attached, which helps to improve the degreasing effect.

[0016] In some alternative embodiments, the double-sided oiling device further includes an upper oil-absorbing unit corresponding to the composite component. The upper oil-absorbing unit includes an upper nonwoven fabric, an upper nonwoven fabric unwinding roller, and an upper nonwoven fabric take-up roller. The upper nonwoven fabric is configured to be unwound by the upper nonwoven fabric unwinding roller, composited with the lower nonwoven fabric via the composite component, and then taken up by the upper nonwoven fabric take-up roller.

[0017] In the above technical solution, the double-sided oiling device is equipped with an upper oil-absorbing unit corresponding to the composite component. Specifically, the upper oil-absorbing unit includes an upper non-woven fabric, an upper non-woven fabric unwinding roller, and an upper non-woven fabric take-up roller, and is set according to the above installation position. With the help of the composite effect of the composite component, excess oil on the upper surface of the sheet can be absorbed and removed.

[0018] In some alternative embodiments, the upper oil suction unit further includes a fourth and a fifth steering roller, which are located upstream and downstream of the composite assembly, respectively, along the transport direction. The upper nonwoven fabric is configured to be unwound by the upper nonwoven fabric unwinding roller, turned by the fourth steering roller, composited with the lower nonwoven fabric via the composite assembly, turned by the fifth steering roller, and then wound up by the upper nonwoven fabric take-up roller.

[0019] In the above technical solution, a fourth and a fifth steering roller are added upstream and downstream of the composite component, respectively. This can change the transmission trajectory of the upper nonwoven fabric, which helps to increase the contact area and contact time between the upper nonwoven fabric and the upper surface of the sheet, thereby improving the degreasing effect.

[0020] In some alternative embodiments, the upper film unwinding and take-up unit further includes a sixth and a seventh steering roller spaced apart along the transport direction. The sixth and seventh steering rollers are located downstream and upstream of the second oiling member, respectively. The upper film is configured to be unwound by the upper film unwinding roller, turned by the sixth steering roller, oiled by the second oiling member, turned by the seventh steering roller to adhere to the oiled surface of the lower film, and then wound up by the upper film take-up roller.

[0021] In the above technical solution, the upper film take-up and unwinding unit is equipped with a sixth and a seventh steering roller and is set in the above installation position, which makes it easier to apply oil to the surface of the upper film and make the oiled surface of the upper film face the oiled surface of the lower film carrying the sheet.

[0022] In some alternative implementations, the double-sided coating apparatus further includes a gripping unit located on a transfer platform and connected to a frame. The gripping unit is configured to reciprocate between a stacking area and a discharge area of ​​the sheet to place the sheet from the stacking area onto the coating surface of the lower film.

[0023] In the above technical solution, the double-sided oiling device is equipped with a gripping unit that can reciprocate between the stacking area and the unloading area of ​​the sheet, which can further increase the automation level of the double-sided oiling device.

[0024] In some alternative implementations, the gripping unit includes a support plate, a rotary drive, a connecting plate, and a plurality of first negative pressure suction nozzles. The support plate is located on the transmission platform and connected to the frame. The rotary drive is connected to the support plate, and the power output end of the rotary drive is connected to the center of the connecting plate. The connecting plate has a plurality of free ends, and the plurality of first negative pressure suction nozzles are respectively connected to the plurality of free ends so that the rotary drive can simultaneously drive the plurality of first negative pressure suction nozzles to reciprocate between the stacking area and the discharging area.

[0025] In the above technical solution, the gripping unit includes a support plate, a rotary drive component, a connecting plate, and multiple first negative pressure suction nozzles, which are arranged in the manner described above so that the multiple first negative pressure suction nozzles can reciprocate between the material stacking area and the material discharging area, thereby improving the gripping efficiency of the gripping unit and thus improving the oiling efficiency of the double-sided oiling device.

[0026] In some alternative embodiments, the oiling unit further includes a first adjusting component and a second adjusting component. The first adjusting component is drivenly connected to the first oiling component and is configured to drive the first oiling component to reciprocate in a vertical direction. The second adjusting component is drivenly connected to the second oiling component and is configured to drive the second oiling component to reciprocate in a vertical direction.

[0027] In the above technical solution, the oiling unit is equipped with a first adjustment component and a second adjustment component. The first adjustment component can drive the first oiling component to reciprocate in the vertical direction to adjust the distance between the first oiling component and the lower film (i.e., the amount of oil can be flexibly adjusted). The second adjustment component can drive the second oiling component to reciprocate in the vertical direction to adjust the distance between the second oiling component and the upper film (i.e., the amount of oil can be flexibly adjusted). This allows for precise oiling of sheets with different oiling specifications.

[0028] In some alternative embodiments, the double-sided coating apparatus further includes a collection unit located downstream of the upper film take-up and unwinding unit and connected to the frame along the transport direction, the collection unit being configured to collect the sheet located downstream of the upper film take-up and unwinding unit.

[0029] In the above technical solution, the double-sided oiling device is equipped with a collection unit, which can automatically collect the sheet after double-sided oiling, thereby further improving the automation level of the double-sided oiling device.

[0030] In some alternative implementations, the collection unit includes a gripping assembly, a tray frame, and a transfer assembly. The gripping assembly is connected to the frame and configured to reciprocate between the upper film unwinding / rewinding unit and the collection area. Along the transport direction, the collection area is located downstream of the end of the transport platform. The transfer assembly is connected to the frame and configured to move the collection tray between the tray frame and the collection area.

[0031] In the above technical solution, the collection unit includes a gripping component, a tray frame, and a transfer component, which are arranged in the manner described above. The gripping component can reciprocate between the upper film unwinding and rewinding unit and the collection area, and the transfer component can transfer the collection tray between the tray frame and the collection area. This solution has the advantages of a more reasonable structural layout and higher collection efficiency.

[0032] In some alternative implementations, the opening of the tray frame faces the collection area along the transfer direction, and the transfer component is slidably connected to the frame via a slide rail extending in the same direction as the transfer direction.

[0033] In the above technical solution, the opening of the tray frame faces the collection area and is consistent with the sliding direction of the transfer component, so that the transfer component can pick up and put down the tray through simple reciprocating linear motion, which has the advantages of simple structure and high efficiency.

[0034] In some alternative implementations, the inner wall of the pallet rack has multiple grooves for accommodating pallets, the grooves being spaced apart in the vertical direction. The collection unit also includes a pallet rack lifting mechanism connected to the pallet rack, the pallet rack lifting mechanism being configured to drive the pallet rack to reciprocate in the vertical direction.

[0035] In the above technical solution, the pallet rack can accommodate multiple pallets at the same time. Furthermore, the collection unit is also equipped with a pallet rack lifting mechanism that can drive the pallet rack to reciprocate in the vertical direction, so that the transfer component can pick up and put down multiple pallets in the pallet rack in sequence, thereby improving the processing capacity of the collection unit. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the structure of a double-sided oiling device provided in an embodiment of this application; Figure 2 for Figure 1 A magnified view of a portion of the image; Figure 3 This is a schematic diagram of the structure of a composite unit provided in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of a lower film take-up and unwrap unit provided in an embodiment of this application; Figure 5This is a schematic diagram of the structure of a lower oil suction device provided in an embodiment of this application; Figure 6 for Figure 5 A schematic diagram of a local structure in the image; Figure 7 This is a schematic diagram of the structure of an upper oil suction device provided in an embodiment of this application; Figure 8 This is a schematic diagram of the structure of an upper film take-up and unwrap unit provided in an embodiment of this application; Figure 9 This is a schematic diagram of the structure of a grasping unit provided in an embodiment of this application; Figure 10 A partial structural schematic diagram of an oiling unit provided in an embodiment of this application; Figure 11 This is a schematic diagram of the structure of a collection unit provided in an embodiment of this application; Figure 12 This is a schematic diagram of the structure of a grasping component provided in an embodiment of this application; Figure 13 for Figure 11 A schematic diagram of a local structure.

[0038] Icons: 10-Double-sided oiling device; 100-Frame; 200-Transfer platform; 210a-Discharge area; 210b-Stacking area; 211b-Stacking trough; 220-Third gap; 230-Fourth gap; 240-Composite component; 241-Second support; 242-Second conveyor roller; 250-Flattening component; 251-Third support; 260-First notch; 270-Second notch; 300-Oiling unit; 310-First oiling component; 311-First gap; 320- Second oiling component; 321-Second gap; 330-First adjusting component; 340-Second adjusting component; 341-Threaded rod; 342-Threaded sleeve; 343-Limiting post; 344-Sliding sleeve; 400a-Lower film take-up and unwinding unit; 400b-Upper film take-up and unwinding unit; 410a-Lower film; 410b-Upper film; 420a-Lower film unwinding roller; 420b-Upper film unwinding roller; 430a-Lower film take-up roller; 430b-Upper film take-up roller; 440a-First steering roller; 440b - Sixth steering roller; 450a- Second steering roller; 450b- Seventh steering roller; 460b- Fourth support; 500- Composite unit; 510- First support; 520- First conveyor roller; 600a- Lower oil suction unit; 600b- Upper oil suction unit; 610a- Lower nonwoven fabric unwinding roller; 610b- Upper nonwoven fabric unwinding roller; 620a- Lower nonwoven fabric winding roller; 620b- Upper nonwoven fabric winding roller; 630a- Third steering roller; 630b- Fourth steering roller; 64 0b - Fifth steering roller; 700 - Gripping unit; 710 - Support plate; 720 - Rotary drive component; 730 - Connecting plate; 740 - First negative pressure suction nozzle; 800 - Collection unit; 810 - Gripping assembly; 811 - X-axis guide rail; 812 - Y-axis guide rail; 813 - Z-axis guide rail; 814 - Second negative pressure suction nozzle; 820 - Pallet frame; 830 - Transfer assembly; 840 - Collection area; 850 - Slide rail; 860 - Pallet support component; 870 - Pallet limiting component; a - Conveying direction. Detailed Implementation

[0039] 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.

[0040] 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.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In the description of this application, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0044] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] In existing technologies, double-sided oiling of fiber sheets mainly relies on manual oiling. However, manual oiling has numerous problems. To replace manual oiling, engineers devised a method of passing the fiber sheet through opposing oiling rollers to achieve automatic oiling on both sides of the fiber sheet without flipping it over. However, this oiling device suffers from a small contact area and short contact time between the oiling rollers and the fiber sheet surface, making it difficult to form a uniform and complete protective oil film layer on both sides of the fiber sheet.

[0046] Based on this, the inventors discovered that by first forming a uniformly thick oil film on the surface of the upper and lower membrane materials respectively, and then sandwiching the fiber sheet between the two membrane materials, the fiber sheet is completely wrapped between the oiled surfaces of the two membrane materials and composited. This can achieve automatic, precise and comprehensive oiling of both sides of the fiber sheet without flipping it over, thereby improving various problems of manual double-sided oiling at this stage to a certain extent.

[0047] The following is a detailed description of a double-sided oiling device for sheet materials provided in this application.

[0048] See Figure 1 and Figure 2 In a first aspect, embodiments of this application provide a double-sided oiling device 10 for sheet materials, including a frame 100, a transport platform 200, an oiling unit 300, a lower film winding and unwinding unit 400a, an upper film winding and unwinding unit 400b, and a composite unit 500. The transport platform 200 is connected to the frame 100 and is used to transport the sheet material. Along the transport direction a, the oiling unit 300 includes a first oiling component 310 and a second oiling component 320 located above the transport platform 200 and spaced apart. The first oiling component 310 is located upstream of the second oiling component 320. There is a first gap 311 between component 310 and the conveying platform 200, and a second gap 321 between the second oiling component 320 and the conveying platform 200. Both the first oiling component 310 and the second oiling component 320 have oil outlets at their bottoms, and the unloading area 210a of the conveying platform 200 is located between the first oiling component 310 and the second oiling component 320. The lower film unwinding and take-up unit 400a includes a lower film 410a, a lower film unwinding roller 420a, and a lower film take-up roller 430a. Both the lower film unwinding roller 420a and the lower film take-up roller 430a are located on the conveying platform. Below platform 200, the lower film 410a is unwound by the lower film unwinding roller 420a and sequentially passes through the first gap 311 and the second oiling component 320 before being wound up by the lower film take-up roller 430a. This allows the lower film 410a to be oiled on its surface as it passes through the first gap 311, and for the oiled surface of the lower film 410a to carry the sheet and drive the sheet to be conveyed on the transport platform 200 as it passes through the unwinding area 210a. The upper film unwinding and take-up unit 400b includes an upper film 410b, an upper film unwinding roller 420b, and an upper film take-up roller 430b. All rollers 430b are located above the conveying platform 200. The upper film 410b is unwound by the upper film unwinding roller 420b and then wound up by the upper film take-up roller 430b after passing through the second oiling member 320, so that the upper film 410b is coated with oil when passing through the second oiling member 320, and so that the oiled surface of the upper film 410b is in contact with the oiled surface of the lower film 410a. Along the conveying direction a, the composite unit 500 is located downstream of the second oiling member 320 and is used to composite the upper film 410b, the sheet and the lower film 410a after passing through the second oiling member 320 and before being wound up.

[0049] In this application, the double-sided oiling device 10 includes a frame 100, a conveying platform 200, an oiling unit 300, a lower film unwinding and winding unit 400a, an upper film unwinding and winding unit 400b, and a composite unit 500. When the lower film 410a passes through the first gap 311 under the drive of the lower film unwinding roller 420a and the lower film winding roller 430a, the first oiling component 310 applies oil to the entire surface of the lower film 410a through the oil outlet. A uniform oil film is formed on the surface. Then, when the lower film 410a passes through the unloading area 210a of the conveyor platform 200, the sheet can be placed on the oiled surface of the lower film 410a and the sheet is conveyed on the conveyor platform 200. When the upper film 410b passes through the second oiling component 320 under the drive of the upper film unwinding roller 420b and the upper film take-up roller 430b, the second oiling component 320 will apply oil to the entire surface of the upper film 410b through the oil outlet. A uniform oil film is formed on the surface of the upper film 410b, and the oiled surface of the upper film 410b can face the oiled surface of the lower film 410a carrying the sheet. Since the upper film 410b and the lower film 410a have the same type of oil on opposite sides, and the upper film 410b has a certain weight, the upper film 410b, the sheet and the lower film 410a will then be bonded together, so that the entire sheet is completely wrapped by the oiled surfaces of the upper film 410b and the lower film 410a and maintained in this state for conveying. On this basis, the bonded upper film 410b, the sheet and the lower film 410a will then pass through the composite unit 500 together to further strengthen the bonding strength between the upper and lower surfaces of the sheet and the oiled surfaces of the upper film 410b and the lower film 410a, so that after the upper and lower films 410a are wound up, a uniform oil film protective layer can be formed on both the upper and lower surfaces of the sheet. With the help of this double-sided oiling device 10, it is possible to achieve automatic, precise and comprehensive oiling of both sides of the sheet without flipping it over, thereby improving to some extent the various problems of manual double-sided oiling at present.

[0050] It should be noted that the form of the first oiling component 310 and the second oiling component 320 is not limited, and they can be set in accordance with the conventional form in the art. For example, they can be a container structure with a receiving cavity, specifically, the bottom of the container has an oil outlet and the receiving cavity contains oil.

[0051] It should be noted that both the lower film 410a and the upper film 410b are made of oil-resistant and smooth polymer materials, such as PET.

[0052] As an example, the lower film 410a and the upper film 410b have the same width dimension and are both larger than the width of the sheet.

[0053] In this embodiment, the lower film 410a and the upper film 410b have the same width and are both larger than the width of the sheet, which can more comprehensively wrap the sheet, thereby improving the double-sided oiling effect of the sheet.

[0054] It should be noted that the form of the composite unit 500 is not limited and can be configured according to conventional choices in the art. For example, the composite unit 500 includes a first support 510 and two first conveying rollers 520 arranged vertically opposite each other. The first support 510 is connected to the frame 100, and the axial ends of the two first conveying rollers 520 are rotatably connected to the first support 510, respectively. (See reference...) Figure 3 .

[0055] It should be noted that, considering the ease of installation of the composite unit 500 and the smooth transmission of the membrane material, the structure of the transmission platform 200 can be optimized.

[0056] See Figure 3 As an example, along the transmission direction a, the region of the transmission platform 200 downstream of the second oiling component 320 has a first notch 260, the composite unit 500 is installed in the first notch 260, wherein a portion of the first support 510 is located in the first notch 260 and the first support 510 is connected to the frame 100, and the first conveying roller 520 located below is accommodated in the first notch 260 and its top is flush with the upper surface of the transmission platform 200.

[0057] See Figure 4 As an example, the lower film unwinding and take-up unit 400a also includes a first guide roller 440a and a second guide roller 450a. Along the transport direction a, the first guide roller 440a is located upstream of the first oiling member 310 and at the end of the transport platform 200. The transport platform 200 is located downstream of the composite unit 500 and has a third gap 220. The second guide roller 450a is installed in the third gap 220. The lower film 410a is unwound by the lower film unwinding roller 420a and passes sequentially through the first guide roller 440a, the first gap 311, the second oiling member 320, the composite unit 500, and the second guide roller 450a before being wound up by the lower film take-up roller 430a.

[0058] In this embodiment, the lower film take-up and unwinding unit 400a is equipped with a first steering roller 440a and a second steering roller 450a and is set according to the above installation position so that the lower film 410a and the corresponding area of ​​the transmission platform 200 can be reasonably connected and cooperated, which helps the lower film 410a to be transmitted more smoothly. At the same time, it can also reduce the risk of the lower film 410a being damaged due to scratches during the transportation process.

[0059] See Figure 5As an example, the double-sided oiling device 10 also includes a lower oil suction unit 600a, which includes a lower nonwoven fabric (not shown in the figure), a lower nonwoven fabric unwinding roller 610a, a lower nonwoven fabric take-up roller 620a, and a third steering roller 630a. The lower nonwoven fabric unwinding roller 610a and the lower nonwoven fabric take-up roller 620a are both located below the conveying platform 200. Along the conveying direction a, the conveying platform 200 is also provided with a fourth gap 230 downstream of the third gap 220. The third steering roller 630a is installed in the fourth gap 230. The lower nonwoven fabric is unwound by the lower nonwoven fabric unwinding roller 610a and passes through the third gap 220 and the third steering roller 630a in sequence before being wound up by the lower nonwoven fabric take-up roller 620a, so that the sheet can be carried on the surface of the lower nonwoven fabric after being separated from the lower film 410a and continue to be conveyed on the conveying platform 200.

[0060] In this embodiment, the double-sided oiling device 10 further includes a lower oil-absorbing unit 600a. Specifically, the lower oil-absorbing unit 600a includes a lower nonwoven fabric, a lower nonwoven fabric unwinding roller 610a, a lower nonwoven fabric winding roller 620a, and a third steering roller 630a, which are arranged according to the above-mentioned installation positions. Before the lower film 410a is wound up, the sheet is carried on the lower film 410a and conveyed along the conveying platform 200. After the lower film 410a is wound up by the second steering roller 450a at the third gap 220, since the conveying paths of the lower nonwoven fabric and the lower film 410a both pass through the third gap 220, the double-sided oiled sheet can be directly transferred to the lower nonwoven fabric after it leaves the surface of the lower film 410a and continue to be conveyed downstream along the conveying platform 200. At the same time, the nonwoven fabric can also absorb and remove excess oil on the lower surface of the sheet.

[0061] Understandably, considering the regularity and rationality of the oiling device, the relative positional relationship of the lower film unwinding roller 420a, the lower film winding roller 430a, the lower nonwoven fabric unwinding roller, and the lower nonwoven fabric winding roller 620a can be optimized.

[0062] As an example, along the transport direction a, the lower film unwinding roller 420a, the lower film winding roller 430a, the lower nonwoven fabric unwinding roller and the lower nonwoven fabric winding roller 620a are distributed sequentially at intervals and are all rotatably connected to the frame 100, wherein the lower film unwinding roller 420a is located upstream of the lower film winding roller 430a.

[0063] See Figure 5 As an example, along the transmission direction a, the area of ​​the transmission platform 200 between the third gap 220 and the fourth gap 230 is also provided with a composite component 240. The lower nonwoven fabric is unwound by the lower nonwoven fabric unwinding roller 610a and sequentially passes through the third gap 220, the composite component 240 and the third deflecting roller 630a before being wound up by the lower nonwoven fabric winding roller 620a.

[0064] In this embodiment, the transmission platform 200 adds a composite component 240 between the third gap 220 and the fourth gap 230. With the help of the composite component 240, the lower surface of the non-woven fabric and the sheet can be more tightly attached, which helps to improve the degreasing effect.

[0065] It should be noted that the form of the composite component 240 is not limited and can be configured according to conventional choices in the art. For example, the composite component 240 includes a second support 241 and two second conveying rollers 242 arranged opposite each other in the vertical direction. The second support 241 is connected to the frame 100, and the axial ends of the two second conveying rollers 242 are rotatably connected to the second support 241, respectively. (See reference...) Figure 6 .

[0066] It should be noted that, considering the ease of installation of the composite component 240 and the smooth transmission of the membrane material, the structure of the transmission platform 200 can be optimized.

[0067] See Figure 6 As an example, along the transport direction a, the transport platform 200 has a second notch 270 in the region between the third gap 220 and the fourth gap 230. The composite component 240 is installed in the second notch 270, wherein a portion of the second support 241 is located in the second notch 270 and the second support 241 is connected to the frame 100, and the second conveying roller 242 located below is accommodated in the second notch 270 and its top is flush with the upper surface of the transport platform 200.

[0068] See Figure 6 As an example, along the transmission direction a, the area of ​​the transmission platform 200 between the third gap 220 and the composite component 240 is also provided with a flattening member 250 for flattening the lower nonwoven fabric passing under the flattening member 250.

[0069] In this embodiment, the conveying platform 200 adds a flattening component 250 between the third gap 220 and the composite component 240, which can reduce the risk of wrinkles appearing on the lower nonwoven fabric during the conveying process, so that the lower nonwoven fabric and the lower surface of the sheet can be more closely attached, which helps to improve the degreasing effect.

[0070] It should be noted that the form of the flattening component 250 is not limited and can be adapted to actual needs. For example, it can be a roller-shaped flattening component 250 or a plate-shaped flattening component 250.

[0071] As an example, flattening component 250 is a plate-shaped flattening component 250.

[0072] In this embodiment, the bottom of the plate-shaped flattening component 250 is flat and has a large surface area, which has a good flattening effect on the non-woven fabric on the lower side.

[0073] It should be noted that the method of fixing the flattening component 250 to the transmission platform 200 is not limited. For example, the flattening component 250 can be fixed above the transmission platform 200 by a third bracket 251, wherein the bottom of the third bracket 251 penetrates the transmission platform 200 and is connected to the frame 100, and the lower non-woven fabric passes through the gap between the flattening component 250 and the transmission platform 200. (See reference...) Figure 6 .

[0074] In other possible implementations, the area of ​​the transmission platform 200 between the composite component 240 and the fourth gap 230 is also provided with a flattening element 250.

[0075] As an example, multiple lower oil suction units 600a are provided, and the multiple lower oil suction units 600a are distributed at intervals along the transmission direction a.

[0076] In this embodiment, multiple lower oil suction units 600a are provided, and multiple oil suctions can improve the oil removal effect on the lower surface of the sheet.

[0077] See Figure 7 As an example, the double-sided oiling device 10 also includes an upper oil-absorbing unit 600b corresponding to the composite component 240. The upper oil-absorbing unit 600b includes an upper nonwoven fabric (not shown in the figure), an upper nonwoven fabric unwinding roller 610b, and an upper nonwoven fabric take-up roller 620b. The upper nonwoven fabric unwinding roller 610b and the upper nonwoven fabric take-up roller 620b are both located above the transmission platform 200. The upper nonwoven fabric is unwound by the upper nonwoven fabric unwinding roller 610b and taken up by the upper nonwoven fabric take-up roller 620b after passing through the composite component 240.

[0078] In this embodiment, the double-sided oiling device 10 is equipped with an upper oil-absorbing unit 600b corresponding to the composite component 240. Specifically, the upper oil-absorbing unit 600b includes an upper non-woven fabric, an upper non-woven fabric unwinding roller 610b, and an upper non-woven fabric take-up roller 620b, and is set according to the above installation position. With the help of the composite effect of the composite component 240, excess oil on the upper surface of the sheet can be absorbed and removed.

[0079] See Figure 7As an example, the upper oil suction unit 600b also includes a fourth guide roller 630b and a fifth guide roller 640b. Along the transmission direction a, the fourth guide roller 630b and the fifth guide roller 640b are located upstream and downstream of the composite component 240, respectively. The upper nonwoven fabric is unwound by the upper nonwoven fabric unwinding roller 610b and sequentially passes through the fourth guide roller 630b, the composite component 240 and the fifth guide roller 640b before being wound up by the upper nonwoven fabric winding roller 620b.

[0080] In this embodiment, a fourth steering roller 630b and a fifth steering roller 640b are added upstream and downstream of the composite component 240, respectively. This can change the transmission trajectory of the upper nonwoven fabric, which helps to increase the contact area and contact time between the upper nonwoven fabric and the upper surface of the sheet, thereby improving the degreasing effect.

[0081] It should be noted that the installation method of the fourth steering roller 630b and the fifth steering roller 640b is not limited and can be set in accordance with the conventional form in this field.

[0082] See Figure 7 As an example, both the fourth steering roller 630b and the fifth steering roller 640b are rotatably connected to the second support 241 in the composite assembly 240, and the conveying roller in the composite assembly 240 is located between the fourth steering roller 630b and the fifth steering roller 640b.

[0083] In this embodiment, the fourth steering roller 630b and the fifth steering roller 640b are both rotatably connected to the second support 241 in the composite assembly 240, so that the overall structure has the advantage of being more compact.

[0084] Understandably, considering the regularity and rationality of the oiling device, the relative positional relationship of the upper film unwinding roller 420b, the upper film winding roller 430b, the upper nonwoven fabric unwinding roller, and the upper nonwoven fabric winding roller 620b can be optimized.

[0085] As an example, along the transport direction a, the upper film unwinding roller 420b, the upper film winding roller 430b, the upper nonwoven fabric unwinding roller and the upper nonwoven fabric winding roller 620b are distributed in sequence at intervals and are all rotatably connected to the frame 100, wherein the upper film unwinding roller 420b is located upstream of the upper film winding roller 430b.

[0086] It should be noted that the number of upper oil suction units 600b can be set according to the number of lower oil suction units 600a. For example, if multiple lower oil suction units 600a are set, multiple upper oil suction units 600b will also be set accordingly.

[0087] See Figure 8As an example, the upper film unwinding and take-up unit 400b also includes a sixth guide roller 440b and a seventh guide roller 450b. Along the transport direction a, the second oiling member 320 is located between the sixth guide roller 440b and the seventh guide roller 450b, and the sixth guide roller 440b is located downstream of the seventh guide roller 450b. The upper film 410b is unwound by the upper film unwinding roller 420b and sequentially passes through the sixth guide roller 440b, the second oiling member 320, the seventh guide roller 450b, the second oiling member 320, and the composite unit 500 before being wound up by the upper film take-up roller 430b.

[0088] It should be noted that the upper film 410b passes through the second oiling component 320 for the first time via the sixth steering roller 440b in order to apply oil to its surface. The upper film 410b passes through the second oiling component 320 for the second time via the seventh steering roller 450b in order to turn the upper film 410b so that its oiled surface faces the oiled surface of the lower film 410a and is initially bonded to the lower film 410a carrying the sheet.

[0089] In this embodiment, the upper film take-up and unwinding unit 400b is equipped with a sixth steering roller 440b and a seventh steering roller 450b and is set in the above-mentioned installation position, which makes it easier to apply oil to the surface of the upper film 410b and make the oiled surface of the upper film 410b face the oiled surface of the lower film 410a carrying the sheet.

[0090] It should be noted that the specific installation method of the sixth steering roller 440b and the seventh steering roller 450b is not limited, and can be set according to the conventional selection in this field.

[0091] See Figure 8 As an example, the sixth steering roller 440b and the seventh steering roller 450b are both fixed between the upper surface of the transmission platform 200 and the bottom of the second oiling member 320 by the fourth bracket 460b. The fourth bracket 460b surrounds the second oiling member 320, and the bottom of the fourth bracket 460b is connected to the transmission platform 200. Along the transmission direction a, the sixth steering roller 440b and the fourth bracket 460b are rotatably connected in the area downstream of the second oiling member 320, and the seventh steering roller 450b and the fourth bracket 460b are rotatably connected in the area upstream of the second oiling member 320.

[0092] See Figure 9 As an example, the double-sided coating apparatus 10 also includes a gripping unit 700 located above the transfer platform 200. The gripping unit 700 is capable of reciprocating between the stacking area 210b and the unloading area 210a of the sheet to place the sheet from the stacking area 210b onto the coating surface of the lower film 410a.

[0093] In this embodiment, the double-sided oiling device 10 is equipped with a gripping unit 700, which can reciprocate between the stacking area 210b and the unloading area 210a of the sheet, thereby further increasing the automation level of the double-sided oiling device 10.

[0094] It should be noted that when the gripping unit 700 is not set, the sheet can also be placed on the oiled surface of the lower film 410a by manual feeding.

[0095] See Figure 9 As an example, along the conveying direction a, the stacking area 210b is located upstream of the end of the conveying platform 200 and is distributed at intervals with the discharge area 210a. The stacking area 210b is provided with a stacking trough 211b, and material sensors are provided on the bottom and sides of the stacking trough 211b.

[0096] In this embodiment, the material stacking area 210b is provided with a material stacking trough 211b and is arranged with the material dispensing area 210a according to the above-mentioned positional relationship, which has the advantage of facilitating sampling. At the same time, material sensors (not shown in the figure) are provided on the bottom and sides of the material stacking trough 211b, which can promptly provide feedback on the raw material status of the material stacking area 210b, making it convenient to replenish materials in time when they are insufficient, thereby improving the production efficiency of the double-sided oiling device 10.

[0097] See Figure 9 As an example, the gripping unit 700 includes a support plate 710, a rotary drive 720, a connecting plate 730, and a plurality of first negative pressure suction nozzles 740. The support plate 710 is located above the transmission platform 200 and connected to the frame 100. The rotary drive 720 is connected to the support plate 710 and the power output end of the rotary drive 720 is connected to the center of the connecting plate 730. The connecting plate 730 has a plurality of free ends, and the plurality of first negative pressure suction nozzles 740 are respectively connected to the plurality of free ends so that the rotary drive 720 can simultaneously drive the plurality of first negative pressure suction nozzles 740 to reciprocate between the stacking area 210b and the discharging area 210a.

[0098] It should be noted that the movement path of each negative pressure nozzle is a circular loop (see details). Figure 9 (The dashed line in the image), and the stacking area 210b and the unloading area 210a are located at the radial ends of the ring.

[0099] In this embodiment, the gripping unit 700 includes a support plate 710, a rotary drive component 720, a connecting plate 730, and a plurality of first negative pressure suction nozzles 740, which are arranged as described above so that the plurality of first negative pressure suction nozzles 740 can reciprocate between the stacking area 210b and the discharging area 210a, thereby improving the gripping efficiency of the gripping unit 700 and thus improving the oiling efficiency of the double-sided oiling device 10.

[0100] It is understandable that in order to pick up and drop materials, the gripping unit 700 also needs to have the function of reciprocating in the vertical direction. In this embodiment, the implementation method is not specifically limited, and it can be set according to the conventional form in the art. For example, in the gripping unit 700, the negative pressure suction nozzle and the corresponding free end of the connecting plate 730 can be connected by a cylinder so that the negative pressure suction nozzle can reciprocate in the vertical direction.

[0101] It is understandable that the amount of oil applied to the lower film 410a by the first oiling component 310 is closely related to the size of the first gap 311. Similarly, the amount of oil applied to the upper film 410b by the second oiling component 320 is closely related to the size of the second oiling component 320. Furthermore, the amount of oil applied to the lower film 410a and the upper film 410b is closely related to the amount of oil applied to the surface of the sheet. In order to effectively control the amount of oil applied to both sides of the sheet, the structure of the double-sided oiling device 10 can be optimized.

[0102] See Figure 10 As an example, the oiling unit 300 also includes a first adjustment component 330 and a second adjustment component 340. The first adjustment component 330 is driven to the first oiling component 310 and can drive the first oiling component 310 to reciprocate in the vertical direction to adjust the size of the first gap 311. The second adjustment component 340 is driven to the second oiling component 320 and can drive the second oiling component 320 to reciprocate in the vertical direction to adjust the size of the second oiling component 320.

[0103] In this embodiment, the oiling unit 300 is further provided with a first adjustment component 330 and a second adjustment component 340. The first adjustment component 330 is used to adjust the size of the first gap 311, and the second adjustment component 340 is used to adjust the size of the second oiling component 320, so that precise oiling can be achieved for sheets of different oiling specifications.

[0104] It should be noted that the form of the first adjustment component 330 and the second adjustment component 340 is not limited, and they can be set in the conventional form in the art, such as a motor or a cylinder, as long as they can drive the oiling part to reciprocate in the vertical direction.

[0105] It should be noted that the first adjustment component 330 and the second adjustment component 340 are identical in form, and will be explained in detail here in conjunction with the second oiling component 320.

[0106] See Figure 10As an example, the bottom of the second oiling component 320 has a base plate. In a preset direction (the preset direction is perpendicular to the transmission direction a), a second adjustment component 340 is provided on both sides of the base plate of the second oiling component 320. The second adjustment component 340 includes a vertically arranged threaded rod 341, a threaded sleeve 342, a limiting post 343, and a sliding sleeve 344. The threaded rod 341 passes through the base plate of the second oiling component 320 and extends into the transmission platform 200 and is rotatably connected to the transmission platform 200. The threaded sleeve 342 is threadedly connected to the threaded rod 341 and connected to the base plate of the second oiling component 320. The limiting post 343 passes through the base plate of the second oiling component 320 and is connected to the transmission platform 200. The sliding sleeve 344 is slidably connected to the limiting post 343.

[0107] In this embodiment, the second adjustment component 340 is configured as a vertically arranged threaded rod 341, a threaded sleeve 342, a limiting post 343, and a sliding sleeve 344 that cooperate with each other. Specifically, by rotating the threaded tube, the threaded sleeve 342 can move in the vertical direction. The movement of the threaded sleeve 342 can drive the oiling component to move. At the same time, the limiting post 343 and the sliding sleeve 344 cooperate with each other to improve the stability of the oiling component during the movement.

[0108] As an example, an adjustment knob is also provided at the top of the threaded rod 341 in the vertical direction.

[0109] In this embodiment, an adjustment knob is added to the top of the threaded rod 341, which allows technicians to adjust the size of the gap by rotating the threaded rod 341.

[0110] See Figure 11 As an example, the double-sided oiling device 10 also includes a collection unit 800, which is located downstream of the fourth gap 230 and connected to the frame 100 along the conveying direction of the conveying platform 200, for collecting the sheet material after passing through the fourth gap 230.

[0111] In this embodiment, the double-sided oiling device 10 is equipped with a collection unit 800, which can automatically collect the sheet after double-sided oiling, thereby further improving the automation level of the double-sided oiling device 10.

[0112] In other possible implementations, the collection unit 800 may not be provided, i.e., manual collection may be used.

[0113] See Figure 11As an example, the collection unit 800 includes a gripping assembly 810, a tray holder 820, and a transfer assembly 830. The gripping assembly 810 is connected to the frame 100 and located above the transfer platform 200. The gripping assembly 810 is capable of reciprocating between a fourth gap 230 and a collection area 840. Along the transfer direction a, the collection area 840 is located downstream of the end of the transfer platform 200 and is used to grip the sheet after passing through the fourth gap 230 and place it into a collection tray located in the collection area 840. The transfer assembly 830 is connected to the frame 100 and is configured to transfer the collection tray between the tray holder 820 and the collection area 840.

[0114] In this embodiment, the collection unit 800 includes a gripping component 810, a tray frame 820, and a transfer component 830, and is arranged in the manner described above. The gripping component 810 is capable of reciprocating between the fourth gap 230 and the collection area 840, and the transfer component 830 is capable of transferring the collection tray between the tray frame 820 and the collection area 840. This configuration has the advantages of a more reasonable structural layout and higher collection efficiency.

[0115] It should be noted that the form of the gripping component 810 is not limited. For example, it can be in the form of a guide rail combined with the second negative pressure suction nozzle 814 (i.e., the second negative pressure suction nozzle 814 can move in three-dimensional space via the guide rail), or it can be set in the form of a multi-degree-of-freedom mechanical wall combined with the second negative pressure suction nozzle 814 (i.e., the second negative pressure suction nozzle 814 can move in three-dimensional space via a multi-degree-of-freedom robotic arm). In this embodiment, the form of a guide rail combined with the second negative pressure suction nozzle 814 is used as an example. For details, please refer to [link to relevant documentation]. Figure 12 Specifically, the gripping component 810 includes an X-axis guide rail 811 extending along the transmission direction a, a Y-axis guide rail 812 perpendicular to the X-axis guide rail 811, a Z-axis guide rail 813 perpendicular to the Y-axis guide rail 812, and a second negative pressure suction nozzle 814 connected to the Z-axis guide rail 813. The X-axis guide rail 811 is fixed above the collection area 840 by a fifth bracket. The Y-axis guide rail 812 can reciprocate on the X-axis guide rail 811, the Z-axis guide rail 813 can reciprocate on the Y-axis guide rail 812, and the second negative pressure suction nozzle 814 can reciprocate on the Z-axis guide rail 813.

[0116] See Figure 13 As an example, along the transport direction a, the opening of the tray frame 820 faces the collection area 840, and the transfer assembly 830 is slidably connected to the frame 100 via a slide rail 850, the slide rail 850 extending in the same direction as the transport direction a.

[0117] In this embodiment, the opening of the tray frame 820 faces the collection area 840 and is consistent with the sliding direction of the transfer component 830, so that the transfer component 830 can pick up and put down the tray through simple reciprocating linear motion, which has the advantages of simple structure and high efficiency.

[0118] It should be noted that the form of the transfer component 830 is not limited and can be set up in accordance with the conventional form in this field.

[0119] See Figure 13 As an example, the transfer assembly 830 includes a tray clamp and a drive (which may be in the form of a motor or cylinder). The tray clamp is slidably connected to the frame 100 via a slide rail 850. The drive is connected to the tray clamp and is capable of driving the tray clamp to reciprocate between the tray rack 820 and the collection area 840.

[0120] See Figure 12 and Figure 13 As an example, in the extension direction of the Y-axis guide rail 812, pallet support members 860 are provided on both sides of the slide rail 850, so that when the pallet reaches the collection area 840, the bottom edge of the pallet in the extension direction of the Y-axis guide rail 812 is respectively supported on the corresponding pallet support member 860.

[0121] See Figure 13 As an example, in the extension direction of the Y-axis guide rail 812, each pallet support 860 is provided with a pallet limiting member 870 on its outer side, so that when the pallet reaches the collection area 840, the two side walls of the pallet in the extension direction of the Y-axis guide rail 812 respectively abut against the corresponding pallet limiting member 870.

[0122] As an example, the inner wall of the pallet rack 820 is provided with multiple grooves for accommodating pallets. The multiple grooves are spaced apart in the vertical direction. The collection unit 800 also includes a pallet rack lifting mechanism (not shown in the figure) connected to the pallet rack 820. The pallet rack lifting mechanism can drive the pallet rack 820 to reciprocate in the vertical direction.

[0123] In this embodiment, the pallet rack 820 can accommodate multiple pallets at the same time. Furthermore, the collection unit 800 is also equipped with a pallet rack lifting mechanism that can drive the pallet rack 820 to reciprocate in the vertical direction, so that the transfer component 830 can sequentially pick up and put in multiple pallets in the pallet rack 820, thereby increasing the processing capacity of the collection unit 800.

[0124] It should be noted that the form of the pallet rack lifting mechanism is not limited; for example, it can be a motor or a cylinder.

[0125] It should be noted that, for any structural or functional units in the double-sided oiling device 10 that are not specifically described or limited, they may be configured in accordance with conventional forms in the art.

[0126] To better understand the technical solution of the embodiments of this application, the operation process of the double-sided oiling device 10 is described here: First, the unoiled sheet is placed in the stacking trough 211b of the stacking area 210b. The lower film 410a is unwound by the lower film unwinding roller 420a and then passes through the first steering roller 440a and the first gap 311 (the oiling position of the lower film 410a). When the lower film 410a reaches the unwinding area 210a, the negative pressure suction nozzle in the gripping unit 700 reaches above the stacking trough 211b under the drive of the rotary drive 720 and descends to pick up the sheet. Then, the negative pressure suction nozzle rises and reaches above the unwinding area 210a under the drive of the rotary drive 720 and descends to place the sheet on the oiling surface of the lower film 410a. When the lower film 410a carrying the sheet reaches the seventh steering roller 450b, the oiled surface of the upper film 410b is turned by the seventh steering roller 450b and faces the oiled surface of the lower film 410a. The transmission path of the upper film 410b in the upper film unwinding roller 420b is as follows: unwinding by the upper film unwinding roller 420b and sequentially passing through the sixth steering roller 440b, the second oiling element 320 (the oiling position of the upper film 410b), and the seventh steering roller 450b (the turning position of the oiled surface of the upper film 410b). Then, the upper film 410b, the sheet, and the lower film 410a pass together through the second oiling element 320 and are bonded together. After bonding, they pass together through the first composite assembly 240, thereby achieving double-sided oiling of the sheet. Finally, the upper film 410b is taken up by the upper film winding unit. The roll 430b rewinds the film, and the lower film 410a is wound up by the lower film take-up roller 430a after passing the third guide roller 630a at the third gap 220. This process can be understood as unwinding the film. Then, the double-sided oiled sheet reaches the lower oil suction unit 600a and the upper oil suction unit 600b, where excess oil on both sides is removed. Specifically, after the double-sided oiled sheet leaves the lower film 410a at the third gap 220, it is transferred to the lower nonwoven fabric and continues to be conveyed along the conveying platform 200. The conveying path of the lower nonwoven fabric in the lower oil suction unit 600a is as follows: the lower nonwoven fabric unwinding roller 610a unwinds the film and passes through the third gap 220, the composite component 240, and the third guide roller 630a in sequence before being wound up by the lower nonwoven fabric take-up roller 62. 0a Rewinding: In the upper oil absorption unit 600b, the upper nonwoven fabric is unwound by the upper nonwoven fabric unwinding roller 610b and sequentially passed through the fourth steering roller 630b, the composite component 240, and the fifth steering roller 640b before being wound up by the upper nonwoven fabric take-up roller 620b. After the oil-absorbed sheet passes through the fourth gap 230, the gripping component 810 in the collection unit 800 will move to the fourth gap 230 to grip the sheet and then transfer it to the collection area 840 and place it in the tray (empty trays are transferred from the tray frame 820 to the collection area 840 in advance by the transfer component 830). This cycle continues until the tray is full, at which point the transfer component 830 in the collection unit 800 will transfer the tray back to the tray frame 820.

[0127] 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 double-sided oiling device for sheet materials, characterized in that, include: Frame (100); A transmission platform (200) is connected to the frame (100) and is used to transport sheets; The oiling unit (300) includes a first oiling component (310) and a second oiling component (320) located on the transmission platform (200) and distributed sequentially at intervals along the transmission direction (a), wherein the material discharge area (210a) of the transmission platform (200) is located between the first oiling component (310) and the second oiling component (320); The lower film unwinding and take-up unit (400a) includes a lower film (410a), a lower film unwinding roller (420a) and a lower film take-up roller (430a). The lower film (410a) is configured to be unwound by the lower film unwinding roller (420a), coated with oil by the first oiling member (310), and after the oiled surface of the film is attached to the sheet when passing through the unwinding area (210a), it is taken up by the lower film take-up roller (430a). The upper film unwinding and take-up unit (400b) includes an upper film (410b), an upper film unwinding roller (420b) and an upper film take-up roller (430b). The upper film (410b) is configured to be unwound by the upper film unwinding roller (420b), coated with oil by the second oiling member (320) and so that its oiled surface can be attached to the oiled surface of the lower film (410a) before being wound up by the upper film take-up roller (430b).

2. The double-sided oiling device for sheet material according to claim 1, characterized in that, The double-sided oiling device (10) further includes a composite unit (500) located downstream of the second oiling member (320) along the transport direction (a). The composite unit (500) is configured to composite the upper film (410b), the sheet and the lower film (410a) after passing through the second oiling member (320) and before winding.

3. The double-sided oiling device for sheet material according to claim 1, characterized in that, The lower film unwinding and take-up unit (400a) further includes a first steering roller (440a) and a second steering roller (450a). Along the transmission direction (a), the first steering roller (440a) is located upstream of the first oiling member (310), and the second steering roller (450a) is located downstream of the second oiling member (320). The lower film (410a) is configured to be unwound by the lower film unwinding roller (420a), turned by the first steering roller (440a), oiled by the first oiling member (310), have its oiled surface attached to the sheet when passing through the unwinding area (210a), and be wound up by the lower film take-up roller (430a) after being turned by the second steering roller (450a).

4. The double-sided oiling device for sheet material according to claim 3, characterized in that, The double-sided oiling device (10) further includes a lower oil suction unit (600a), which includes a lower nonwoven fabric, a lower nonwoven fabric unwinding roller (610a), a lower nonwoven fabric take-up roller (620a), and a third steering roller (630a). The third steering roller (630a) is located downstream of the second steering roller (450a). The lower nonwoven fabric is configured to be unwound by the lower nonwoven fabric unwinding roller (610a), have the sheet attached to its upper surface when it passes downstream of the second steering roller (450a), and be taken up by the lower nonwoven fabric take-up roller (620a) after being turned by the third steering roller (630a).

5. The double-sided oiling device for sheet material according to claim 4, characterized in that, The transmission platform (200) further includes a composite component (240) located between the second steering roller (450a) and the third steering roller (630a) along the transmission direction (a). The lower nonwoven fabric is configured to be unwound by the lower nonwoven fabric unwinding roller (610a), have its upper surface attached to the sheet downstream of the second steering roller (450a), be composited with the sheet via the composite component (240), and be wound up by the lower nonwoven fabric take-up roller (620a) after being turned by the third steering roller (630a). Optionally, along the transport direction (a), the area of ​​the transport platform (200) between the second steering roller (450a) and the composite component (240) is further provided with a flattening member (250), which is configured to flatten the lower nonwoven fabric.

6. The double-sided oiling apparatus for sheet material according to claim 5, characterized in that, The double-sided oiling device (10) further includes an upper oil-absorbing unit (600b) corresponding to the composite component (240). The upper oil-absorbing unit (600b) includes an upper nonwoven fabric, an upper nonwoven fabric unwinding roller (610b), and an upper nonwoven fabric winding roller (620b). The upper nonwoven fabric is configured to be unwound by the upper nonwoven fabric unwinding roller (610b), composited with the lower nonwoven fabric via the composite component (240), and then wound up by the upper nonwoven fabric winding roller (620b).

7. The double-sided oiling device for sheet material according to claim 6, characterized in that, The upper oil-absorbing unit (600b) further includes a fourth steering roller (630b) and a fifth steering roller (640b). Along the transmission direction (a), the fourth steering roller (630b) and the fifth steering roller (640b) are located upstream and downstream of the composite assembly (240), respectively. The upper nonwoven fabric is configured to be unwound by the upper nonwoven fabric unwinding roller (610b), turned by the fourth steering roller (630b), composited with the lower nonwoven fabric via the composite assembly (240), turned by the fifth steering roller (640b), and then wound up by the upper nonwoven fabric take-up roller (620b).

8. The double-sided oiling apparatus for sheets according to any one of claims 1 to 7, characterized in that, The upper film unwinding and take-up unit (400b) further includes a sixth steering roller (440b) and a seventh steering roller (450b) spaced apart along the transport direction (a). The sixth steering roller (440b) and the seventh steering roller (450b) are located downstream and upstream of the second oiling member (320), respectively. The upper film (410b) is configured to be unwound by the upper film unwinding roller (420b), turned by the sixth steering roller (440b), oiled by the second oiling member (320), turned by the seventh steering roller (450b) to be bonded to the oiled surface of the lower film (410a), and then wound up by the upper film take-up roller (430b).

9. The double-sided oiling apparatus for sheets according to any one of claims 1 to 7, characterized in that, The double-sided oiling device (10) further includes a gripping unit (700) located on the transfer platform (200) and connected to the frame (100). The gripping unit (700) is configured to reciprocate between the stacking area (210b) and the unloading area (210a) of the sheet to place the sheet from the stacking area (210b) onto the oiling surface of the lower film (410a).

10. The sheet double-sided oiling apparatus according to claim 9, characterized in that, The gripping unit (700) includes a support plate (710), a rotary drive (720), a connecting plate (730), and a plurality of first negative pressure suction nozzles (740). The support plate (710) is located on the transmission platform (200) and connected to the frame (100). The rotary drive (720) is connected to the support plate (710), and the power output end of the rotary drive (720) is connected to the center of the connecting plate (730). The connecting plate (730) has a plurality of free ends. The plurality of first negative pressure suction nozzles (740) are respectively connected to the plurality of free ends so that the rotary drive (720) can simultaneously drive the plurality of first negative pressure suction nozzles (740) to reciprocate between the stacking area (210b) and the discharging area (210a).

11. The double-sided oiling apparatus for sheets according to any one of claims 1 to 7, characterized in that, The oiling unit (300) further includes a first adjustment component (330) and a second adjustment component (340). The first adjustment component (330) is connected to the first oiling component (310) and is configured to drive the first oiling component (310) to reciprocate in the vertical direction. The second adjustment component (340) is connected to the second oiling component (320) and is configured to drive the second oiling component (320) to reciprocate in the vertical direction.

12. The double-sided oiling apparatus for sheets according to any one of claims 1 to 7, characterized in that, The double-sided oiling device (10) further includes a collection unit (800) located downstream of the upper film take-up and unwinding unit (400b) and connected to the frame (100) along the transport direction (a). The collection unit (800) is configured to collect the sheet located downstream of the upper film take-up and unwinding unit (400b).

13. The double-sided oiling apparatus for sheet material according to claim 12, characterized in that, The collection unit (800) includes a gripping component (810), a tray frame (820), and a transfer component (830). The gripping component (810) is connected to the frame (100) and is configured to reciprocate between the upper film unwinding and rewinding unit (400b) and the collection area (840). Along the transmission direction (a), the collection area (840) is located downstream of the end of the transmission platform (200). The transfer component (830) is connected to the frame (100) and is configured to drive the collection tray to transfer between the tray frame (820) and the collection area (840).

14. The double-sided oiling apparatus for sheet material according to claim 13, characterized in that, Along the transport direction (a), the opening of the tray frame (820) faces the collection area (840), and the transfer component (830) is slidably connected to the frame (100) via a slide rail (850), the slide rail (850) extending in the same direction as the transport direction (a).

15. The sheet double-sided oiling apparatus according to claim 14, characterized in that, The inner wall of the pallet rack (820) is provided with a plurality of grooves for accommodating pallets, and the plurality of grooves are spaced apart in the vertical direction. The collection unit (800) also includes a pallet rack lifting mechanism connected to the pallet rack (820), and the pallet rack lifting mechanism is configured to drive the pallet rack (820) to reciprocate in the vertical direction.

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