Flattening roller assembly and gluing system

Abstract

The utility model discloses a flattening roller assembly and a gluing system. The flattening roller assembly comprises a flattening roller and a flattening roller, the number of the mounting bases is two, the two mounting bases are located at the two axial ends of the flattening roller correspondingly, and the flattening roller is connected with the mounting bases in the mode of rotating around the axial direction of the flattening roller; the number of the lifting mechanisms is two, the two lifting mechanisms correspond to the two mounting bases one to one and are fixedly connected with the two mounting bases, and each lifting mechanism is used for driving the corresponding mounting base to move up and down in the height direction. According to the utility model, the appearance of the PVC product can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PVC coating, in particular to a flattening roller assembly and a gluing system. Background Art

[0002] As the surface material of the car interior, the leather of car interior seats is the material that the driver and passengers have the most contact opportunities and the largest contact area, and is also an important factor affecting the health and safety of the car interior environment. The industrial production of polyvinyl chloride (PVC) has opened up new raw material resources for artificial leather and promoted the development of artificial leather production.

[0003] In the PVC coating process, the three coating stations use a gravure wheel coating method to transfer the adhesive to the PVC substrate, and then pass through a flattening roller to apply the adhesive to the PVC substrate, and then enter the oven to bond the base fabric to form a large roll of coated semi-finished products, and then go through the printing process and embossing process to form the final car seat artificial leather. However, this coating process is prone to appearance problems such as rough surface, lines and scratches on the PVC product. Utility Model Content

[0004] The utility model aims to solve the problem of rough appearance of PVC products produced in PVC coating process. The utility model provides a flattening roller assembly and a gluing system, which can improve the appearance of PVC products.

[0005] In order to solve the above technical problems, the embodiment of the utility model discloses a flattening roller assembly, comprising:

[0006] Flattening roller;

[0007] The mounting seats include two mounting seats, which are respectively located at two ends of the axial direction of the flattening roller, and the flattening roller is connected to the mounting seats in a manner of being rotatable around the axial direction thereof;

[0008] The lifting mechanism comprises two lifting mechanisms, the two lifting mechanisms correspond to the two mounting seats one by one and are fixedly connected, and each lifting mechanism is used for driving the corresponding mounting seat to move up and down along the height direction.

[0009] Adopting the above technical solution, the present application connects the flattening roller and the lifting mechanism through a mounting seat, so that the position of the flattening roller can be adjusted in height through the lifting mechanism to match the flow characteristics of different glues. Specifically, if the viscosity of the glue is high, its fluidity on the substrate is low and it is not easy to flow, so the glue on the substrate is not easy to be rolled evenly. At this time, the height of the flattening roller can be lowered as a whole, that is, the two lifting mechanisms are operated simultaneously and synchronously, so that the flattening roller moves down and contacts the substrate more fully, and the pressure of the flattening roller on the substrate is greater, so as to better flatten the glue on the substrate and make the glue evenly distributed. Correspondingly, if the viscosity of the glue is low, the height of the flattening roller can be raised as a whole, so that the flattening roller moves up and reduces the pressure of the flattening roller on the substrate, so as to avoid excessive pressure of the flattening roller on the substrate, resulting in too little glue on the substrate.

[0010] In addition, when the amount of glue in the width direction of the substrate is uneven, for example, there is more glue on one side and less glue on the other side, at this time, a lifting mechanism (corresponding to the side with more glue) can be operated separately to press down the side of the flattening roller corresponding to the side with more glue to make it in more complete contact with the substrate. The flattening roller exerts greater pressure on the side of the substrate with more glue, thereby better flattening the glue on this side of the substrate and making it relatively evenly distributed with the side with less glue.

[0011] It is easy to understand that when the glue liquid is unevenly distributed in the width direction of the substrate, the two lifting mechanisms can also be operated simultaneously, that is, the lifting mechanism on the side with more glue liquid drives one side of its corresponding flattening roller to move downward, and the lifting mechanism on the side with less glue liquid drives the other side of the flattening roller to move upward, so as to achieve uniform distribution of the glue liquid.

[0012] In summary, the present application adjusts the height of the flattening roller through a lifting mechanism. It can adjust the height of one end of the flattening roller only through a single lifting mechanism (that is, even if the flattening roller is tilted), or it can adjust the overall height of the flattening roller by synchronously operating two lifting mechanisms, thereby adjusting the pressure of the flattening roller on the substrate. On the one hand, the glue on the substrate is evenly distributed to optimize the thickness of the PVC product. On the other hand, it ensures that the flattening roller fully rolls the substrate to reduce the lines on the surface of the substrate. The two aspects cooperate to improve the appearance of the PVC product.

[0013] To put it another way, the adhesive on the substrate is evenly distributed, which reduces the weight fluctuation of the adhesive in the width direction of the substrate, thereby improving the numerical difference of the bonding force.

[0014] According to another specific embodiment of the utility model, the flattening roller assembly includes a motor, the motor is connected to the flattening roller, and the motor is used to drive the flattening roller to rotate relative to the mounting seat.

[0015] According to another specific embodiment of the present utility model, the flattening roller assembly includes an encoder, the encoder is connected to the motor, and the encoder is used to control the rotation speed of the flattening roller.

[0016] By adopting the above technical solution, the staff can adjust the rotation speed of the flattening roller through the encoder according to the flattening condition of the flattening roller on the surface of the substrate, so as to improve the appearance abnormality of the substrate surface and other problems.

[0017] According to another specific embodiment of the utility model, the lifting mechanism includes a hand-cranked screw lifter.

[0018] By adopting the above technical solution, the staff can adjust the overall height position of the flattening roller or the height position of a part of it by operating the hand-cranked screw lifter.

[0019] According to another specific embodiment of the utility model, each of the mounting seats includes a mounting hole, in which a bearing is provided, and the axial ends of the flattening roller are respectively connected to the bearings, so that the flattening roller is connected to the mounting seat in a rotatable manner around its axial direction.

[0020] According to another specific embodiment of the utility model, the outer surface of the flattening roller is chrome-plated.

[0021] By adopting the above technical solution, the outer surface of the flattening roller is chrome-plated, thereby improving the wear resistance of the flattening roller and reducing appearance problems such as foreign matter adhesion, lines and scratches that may occur during the flattening process of the flattening roller.

[0022] The embodiment of the utility model further discloses a gluing system based on any of the above embodiments, comprising:

[0023] A glue tray, used for containing glue liquid;

[0024] A gravure wheel, a part of which is immersed in the glue liquid of the glue disc, and the gravure wheel is used to rotate in the glue disc;

[0025] a pressing roller, located above the gravure wheel and abutting against it, the substrate is transmitted through between the pressing roller and the gravure wheel; the gravure wheel comprises a plurality of grooves, the plurality of grooves are used to fill the glue liquid, the pressing roller is used to press the substrate onto the gravure wheel, so that the glue liquid in the plurality of grooves is transferred to the substrate; and,

[0026] In the above-mentioned flattening roller assembly, along the conveying direction of the substrate, the flattening roller is located downstream of the pressing roller, and the flattening roller is located above the substrate, so that the flattening roller contacts the substrate and applies pressure thereto.

[0027] By adopting the above technical scheme, the substrate is transferred between the pressure roller and the gravure wheel. The gravure wheel rotates in the glue disc, and its multiple grooves are filled with glue. The grooves filled with glue rotate upward to contact the substrate. The pressure roller presses the substrate against the gravure wheel, and the glue in the grooves is transferred to the substrate. Then, the substrate with glue attached continues to be transferred to the flattening roller and is located below the flattening roller. The flattening roller contacts and applies pressure to the substrate, thereby flattening the concave and convex patterns on the substrate formed by contact with the gravure wheel and evenly spreading the glue on the substrate.

[0028] According to another specific embodiment of the utility model, the cross-sections of the multiple grooves are all hexagonal, and the cross-sectional area of ​​the grooves gradually decreases along the depth direction of the grooves and from the outside to the inside; the wall thickness between any two adjacent grooves is 0.13mm to 0.18mm.

[0029] According to another specific embodiment of the present invention, the line number of the gravure wheel is 15.5 LPI to 17 LPI.

[0030] According to another specific embodiment of the present invention, the pressure roller includes a rubber layer, and the hardness of the rubber layer is between 65 degrees and 75 degrees.

[0031] By adopting the above technical solution, the pressure roller shape of the rubber layer between 65 degrees and 75 degrees becomes smaller, and the transfer of the glue liquid is more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of a gluing system according to an embodiment of the utility model is shown;

[0033] Figure 2 A schematic diagram showing the grooves on the gravure wheel of an embodiment of the utility model;

[0034] Figure 3 Show Figure 2 A partial enlarged view of

[0035] Figure 4 A stereoscopic view of a flattening roller assembly according to an embodiment of the utility model is shown. DETAILED DESCRIPTION

[0036] The following is an explanation of the implementation of the present invention by specific specific embodiments. Those skilled in the art can easily understand other advantages and functions of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0037] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0038] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0039] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0040] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0041] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0042] refer to Figure 1 An embodiment of the present application provides a gluing system 1, comprising a flattening roller assembly 2, a glue disc 3, a gravure wheel 4 and a pressure roller 5.

[0043] The glue tray 3 is used to contain glue liquid. For example, the glue liquid is a liquid adhesive.

[0044] A part of the gravure wheel 4 is immersed in the glue liquid of the glue disc 3 and contacts with the glue liquid, and the other part extends out of the glue disc 3 and does not contact with the glue liquid. The gravure wheel 4 is used to rotate in the glue disc 3. Exemplarily, the gravure wheel 4 is connected to a motor, and the motor drives the gravure wheel 4 to rotate in the glue disc 3. That is to say, the part of the gravure wheel 4 immersed in the glue liquid and the part exposed to the glue liquid are not constant. During the rotation of the gravure wheel 4, the part of the gravure wheel 4 originally immersed in the glue liquid gradually exposes the glue liquid, and the part originally exposed to the glue liquid also gradually immerses in the glue liquid. During its rotation, the gravure wheel 4 circulates in and out of the glue liquid of the glue disc 3.

[0045] The pressing roller 5 is located above the gravure wheel 4 and abuts against it. That is, the pressing roller 5 is tangential to the gravure wheel 4. Exemplarily, the rotation of the gravure wheel 4 drives the pressing roller 5 to rotate, and the gravure wheel 4 and the pressing roller 5 rotate in opposite directions, for example, when the gravure wheel 4 rotates clockwise, the pressing roller 5 rotates counterclockwise.

[0046] The pressing roller 5 includes a rubber layer, and the hardness of the rubber layer is between 65 and 75 degrees. Exemplarily, the hardness of the rubber layer can be 65, 67, 69, 70, etc. Preferably, in this embodiment, the hardness of the rubber layer is 70 degrees, its deformation is small, and the transferred glue is more uniform. Specifically, the pressing roller 5 with a 70-degree rubber layer reduces the gram weight difference of the glue in the width direction of the substrate 6 from the original 5% to 2%, thereby significantly improving the uniformity of the glue in the width direction of the substrate 6.

[0047] The substrate 6 is transmitted between the pressing roller 5 and the gravure wheel 4. For example, the gravure wheel 4 and the pressing roller 5 are both cylindrical and parallel, and the axes of the gravure wheel 4 and the pressing roller 5 are parallel to the width direction of the substrate 6 ( Figure 4 shown in the Y direction).

[0048] Exemplarily, one end of the substrate 6 is connected to a traction member (not shown in the figure), and the traction member pulls the substrate 6 for transmission so as to pass between the pressure roller 5 and the gravure wheel 4 .

[0049] refer to Figures 1 to 3 The gravure wheel 4 includes a plurality of grooves 40, and the plurality of grooves 40 are used to fill the glue liquid. The pressure roller 5 is used to press the substrate 6 onto the gravure wheel 4, so that the glue liquid in the plurality of grooves 40 is transferred onto the substrate 6. Exemplarily, the pressure roller 5 is located above the gravure wheel 4, and it presses the gravure wheel 4 downward, that is, the pressure roller 5 applies pressure to the gravure wheel 4, so that the substrate 6 is fully in contact with the gravure wheel 4, so that the glue liquid in the plurality of grooves 40 on the gravure wheel 4 is transferred onto the substrate 6, so as to achieve the purpose of transferring the glue liquid.

[0050] The cross-sections of the plurality of grooves 40 are all hexagonal, and the cross-sectional area of ​​the grooves 40 gradually decreases from the outside to the inside along the depth direction of the grooves 40. In other words, the groove wall of the groove 40 gradually shrinks from the outside to the inside.

[0051] The wall thickness m between any two adjacent grooves 40 is 0.13 mm to 0.18 mm. That is, the wall thickness m between any two adjacent grooves 40 can be 0.13 mm, 0.14 mm, 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, etc. Preferably, the wall thickness m between any two adjacent grooves 40 of this embodiment is 0.15 mm.

[0052] That is, compared with other embodiments, the spacing between the grooves 40 on the gravure wheel 4 of the embodiment of the present application is small and more dense, and the glue liquid coated on the substrate 6 is also more dense. On the other hand, the spacing between two adjacent grooves 40 is small, so the grooves 40 are easier to wet, and the glue liquid filled in the grooves 40 is easier to transfer to the substrate 6.

[0053] Exemplarily, the number of lines of the gravure wheel 4 is 15.5LPI to 17LPI. That is, the number of lines of the gravure wheel 4 can be 15.5LPI, 16LPI, 16.5LPI, 17LPI. Preferably, in this embodiment, the number of lines of the gravure wheel 4 is 16.5LPI, that is, the number of grooves 40 per inch is 16.5. Compared with other embodiments, the number of grooves 40 per unit length of the gravure wheel 4 of this embodiment is more and denser, so that the glue on the gravure wheel 4 is densely dispersed, and its bonding strength level is improved. Specifically, in the case of the same gram weight of glue, the bonding strength of the gravure wheel 4 of the embodiment of the present application is improved by 15%.

[0054] refer to Figure 1 and Figure 4 The flattening roller assembly 2 includes a flattening roller 20, which is arranged along the transmission direction of the substrate 6 ( Figure 1 The flattening roller 20 is located downstream of the pressing roller 5, and the flattening roller 20 is located above the substrate 6, so that the flattening roller 20 contacts and applies pressure to the substrate 6. Exemplarily, the surface of the substrate 6 that is transmitted through the gravure wheel 4 and the pressing roller 5 has glue attached to it, which is pulled by the traction member and transmitted to the flattening roller 20. The flattening roller 20 contacts and applies pressure to the substrate 6, thereby flattening the concave and convex patterns on the substrate 6 formed by contact with the gravure wheel 4, and evenly smearing the glue on the substrate 6.

[0055] Exemplarily, the flattening roller 20 has a cylindrical shape.

[0056] The above-mentioned flattening roller assembly 2 also includes a mounting seat 21 and a lifting mechanism 23. Among them, the mounting seat 21 includes two, namely a first mounting seat 211 and a second mounting seat 212, and the first mounting seat 211 and the second mounting seat 212 are respectively located in the axial direction of the flattening roller 20 ( Figure 4 The two ends of the flattening roller 20 are respectively connected to the first mounting seat 211 and the second mounting seat 212 in a manner that they can rotate around their axial direction. Exemplarily, the flattening roller 20 rotates to apply pressure to the substrate 6 being transported, thereby flattening the concave and convex patterns on the substrate 6 formed by contact with the gravure wheel 4, and evenly applying the glue on the substrate 6.

[0057] Correspondingly, the lifting mechanism 23 includes two, namely a first lifting mechanism 231 and a second lifting mechanism 232, wherein the first lifting mechanism 231 is fixedly connected to the first mounting seat 211, and the first lifting mechanism 231 is used to drive the first mounting seat 211 in the height direction ( Figure 4 The second lifting mechanism 232 is fixedly connected to the second mounting seat 212, and the second lifting mechanism 232 is used to drive the second mounting seat 212 to move up and down along the height direction.

[0058] Exemplarily, the first lifting mechanism 231 and the first mounting seat 211 , and the second lifting mechanism 232 and the second mounting seat 212 are respectively located at the two axial ends of the flattening roller 20 , thereby forming stable support for the flattening roller 20 at the two axial ends of the flattening roller 20 .

[0059] Exemplarily, the first lifting mechanism 231 drives the first mounting seat 211 in the height direction ( Figure 4 The second lifting mechanism 232 drives the second mounting seat 212 to move up and down in the height direction. That is, the first lifting mechanism 231 and the second lifting mechanism 232 can drive one end of the corresponding flattening roller 20 to move up and down. It is easy to understand that if the first lifting mechanism 231 and the second lifting mechanism 232 are operated simultaneously and synchronously, the flattening roller 20 as a whole will translate in the height direction. If only the first lifting mechanism 231 or the second lifting mechanism 232 is operated separately, one end of the flattening roller 20 corresponding to the lifting mechanism 23 moves, and the other end does not move. At this time, the flattening roller 20 is tilted, and it is at a set angle with the horizontal plane.

[0060] By adopting the above technical solution, the present application connects the flattening roller 20 with the lifting mechanism 23 through the mounting seat 21, so as to adjust the height of the flattening roller 20 through the lifting mechanism 23 to match the flow characteristics of different glues. Specifically, if the viscosity of the glue is high, its fluidity on the substrate 6 is small and it is not easy to flow, so the glue on the substrate 6 is not easy to be rolled evenly. At this time, the height of the flattening roller 20 can be lowered as a whole, that is, the first lifting mechanism 231 and the second lifting mechanism 232 are operated simultaneously and synchronously, so that the flattening roller 20 moves down, contacts the substrate 6 more fully, and the pressure of the flattening roller 20 on the substrate 6 is greater, so as to better flatten the glue on the substrate 6 and make it evenly distributed. Correspondingly, if the viscosity of the glue is low, the height of the flattening roller 20 can be raised as a whole, so that the flattening roller 20 moves up, and the pressure of the flattening roller 20 on the substrate 6 is reduced, so as to avoid the flattening roller 20 The pressure on the substrate 6 is too large, resulting in too little glue on the substrate 6.

[0061] In addition, when the width direction of the substrate 6 ( Figure 4 When the amount of glue on the substrate 6 (shown in the Y direction) is uneven, for example, there is more glue on the side close to the first mounting seat 211 and less glue on the side close to the second mounting seat 212, the first lifting mechanism 231 (the side with more glue) can be operated alone, and the second lifting mechanism 232 on the side with less glue is not operated to keep it in place. The first lifting mechanism 231 presses down the side of the flattening roller 20 corresponding to the side with more glue, so that it is more fully in contact with the substrate 6. The pressure of the flattening roller 20 on the side with more glue on the substrate 6 is greater, so that the glue on the side with more glue on the substrate 6 is better flattened, so that it is relatively evenly distributed with the side with less glue. It is easy to understand that when the glue distribution in the width direction of the substrate 6 is uneven, the first lifting mechanism 231 and the second lifting mechanism 232 can also be operated at the same time, that is, the lifting mechanism 23 on the side with more glue drives the corresponding side of the flattening roller 20 to move down, and the lifting mechanism 23 on the side with less glue drives the other side of the flattening roller 20 to move up, so as to achieve uniform distribution of the glue.

[0062] In summary, the present application adjusts the height of the flattening roller 20 through the lifting mechanism 23. It can adjust the height of one end of the flattening roller 20 only through a single lifting mechanism 23 (that is, even if the flattening roller 20 is tilted), or it can adjust the overall height of the flattening roller 20 by synchronously operating two lifting mechanisms (i.e., the first lifting mechanism 231 and the second lifting mechanism 232), thereby adjusting the pressure of the flattening roller 20 on the substrate 6. On the one hand, the glue on the substrate 6 is evenly distributed to optimize the thickness of the PVC product. On the other hand, it ensures that the flattening roller 20 fully rolls the substrate 6 to reduce the lines on the surface of the substrate 6. The two aspects cooperate to improve the appearance of the PVC product.

[0063] From another perspective, the glue on the substrate 6 is evenly distributed, which reduces the weight fluctuation of the glue in the width direction of the substrate 6, thereby improving the numerical difference of the bonding force.

[0064] refer to Figure 1 and Figure 4 In some possible embodiments, the first mounting seat 211 and the second mounting seat 212 both include a mounting hole 222, in which a bearing 221 is provided. The axial ends of the flattening roller 20 are respectively connected to the bearing 221, so that the flattening roller 20 is connected to the first mounting seat 211 and the second mounting seat 212 in a rotatable manner around its axial direction.

[0065] In some possible implementations, the flattening roller assembly 2 further includes a motor (not shown in the figure), which is connected to the flattening roller 20 and is used to drive the flattening roller 20 to rotate relative to the mounting base 21. Exemplarily, the flattening roller 20 rotates to apply pressure to the substrate 6 being transported, thereby flattening the concave and convex patterns on the substrate 6 formed by contact with the gravure wheel 4, and applying the glue on the substrate 6 evenly.

[0066] In some possible implementations, the flattening roller assembly 2 further includes an encoder (not shown in the figure), which is connected to the motor and is used to control the rotation speed of the flattening roller 20. For example, in actual applications, the staff can adjust the rotation speed of the flattening roller 20 through the encoder according to the flattening condition of the flattening roller 20 on the surface of the substrate 6, so as to improve the appearance abnormality of the surface of the substrate 6 and other problems.

[0067] In some possible implementations, the lifting mechanism 23 includes a hand-cranked screw lifter. For example, the staff adjusts the height position of the entire flattening roller 20 or the height position of a part thereof by operating the hand-cranked screw lifter.

[0068] Those skilled in the art will appreciate that, although in the present embodiment, a hand-cranked screw lift is used as the lifting mechanism 23 to drive the flattening roller 20 to move up and down, in other embodiments, other lifting mechanisms 23 may also be used to achieve the purpose of driving the flattening roller 20 to move up and down, such as a hydraulic lift, an electric lift, etc.

[0069] In some possible implementations, the outer surface of the flattening roller 20 is chrome plated. Exemplarily, the present application plates chrome on the outer surface of the flattening roller 20, thereby improving the wear resistance of the flattening roller 20 and reducing appearance problems such as foreign matter adhesion, lines and scratches that may occur during the flattening process of the flattening roller 20.

[0070] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above contents are further detailed descriptions of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A flattening roller assembly, characterized in that: The flattening roller assembly comprises: Flattening roller; The mounting seats include two mounting seats, which are respectively located at two ends of the axial direction of the flattening roller, and the flattening roller is connected to the mounting seats in a manner of being rotatable around the axial direction thereof; The lifting mechanism comprises two lifting mechanisms, the two lifting mechanisms correspond to the two mounting seats one by one and are fixedly connected, and each lifting mechanism is used for driving the corresponding mounting seat to move up and down along the height direction.

2. The flattening roller assembly according to claim 1, characterized in that: The flattening roller assembly includes a motor, which is connected to the flattening roller and is used to drive the flattening roller to rotate relative to the mounting seat.

3. The flattening roller assembly according to claim 2, characterized in that: The flattening roller assembly includes an encoder, which is connected to the motor and is used to control the rotation speed of the flattening roller.

4. The flattening roller assembly according to claim 1, characterized in that: The lifting mechanism comprises a hand-cranked screw lifter.

5. The flattening roller assembly according to claim 1, characterized in that: Each of the mounting seats comprises a mounting hole, in which a bearing is arranged, and the two axial ends of the flattening roller are respectively connected to the bearings, so that the flattening roller is connected to the mounting seat in a rotatable manner around its axial direction.

6. The flattening roller assembly according to claim 1, characterized in that: The outer surface of the flattening roller is chrome plated.

7. A gluing system, characterized in that: The gluing system comprises: A glue tray, used for containing glue liquid; A gravure wheel, a part of which is immersed in the glue liquid of the glue disc, and the gravure wheel is used to rotate in the glue disc; a pressing roller, located above the gravure wheel and abutting against it, the substrate is transmitted through between the pressing roller and the gravure wheel; the gravure wheel comprises a plurality of grooves, the plurality of grooves are used to fill the glue liquid, the pressing roller is used to press the substrate onto the gravure wheel, so that the glue liquid in the plurality of grooves is transferred to the substrate; and, The flattening roller assembly according to any one of claims 1 to 6 is characterized in that the flattening roller is located downstream of the pressure roller along the conveying direction of the substrate, and the flattening roller is located above the substrate so that the flattening roller contacts the substrate and applies pressure thereto.

8. The gluing system according to claim 7, characterized in that: The cross-sections of the multiple grooves are all hexagonal, and the cross-sectional areas of the grooves gradually decrease along the depth direction of the grooves and from the outside to the inside; the wall thickness between any two adjacent grooves is 0.13 mm to 0.18 mm.

9. The gluing system according to claim 8, characterized in that: The line count of the gravure wheel is 15.5 LPI to 17 LPI.

10. The gluing system according to claim 7, characterized in that: The pressing roller comprises a rubber layer, and the hardness of the rubber layer is between 65 degrees and 75 degrees.

Images