Three-paper-pressing-shaft roller coating mechanism and pasting machine

Abstract

The utility model relates to a roll painting mechanism with three paper pressing shafts and a pasting machine, the roll painting mechanism with three paper pressing shafts comprises a main roller, a paper feeding and pressing shaft and a paper discharging and pressing shaft, the paper feeding and pressing shaft is arranged on the paper feeding side of a roll painting station, a gluing channel is formed between the paper feeding and pressing shaft and the main roller, the paper discharging and pressing shaft is arranged on the paper discharging side of the roll painting station, and the gluing channel is communicated with the gluing channel. A paper passing channel is formed between the paper outlet pressing shaft and the main roller, paper sequentially penetrates through the gluing channel and the paper passing channel, the paper inlet pressing shaft presses the paper to the roller face of the main roller so that glue on the roller face can be coated on the paper, and the paper outlet pressing shaft supports the paper on the paper outlet side so that the paper can be conveyed from the gluing channel and the paper passing channel at a fixed radian. Paper is supported on the paper outlet side through the paper outlet pressing shaft, so that the paper with creases can be uniformly coated with glue, and the gluing quality is improved; one paper outlet pressing shaft and the two paper inlet pressing shafts can be interchanged, the matching of the paper pressing shafts can be carried out according to the gluing requirements of different pieces of paper, and the compatibility of the gluing machine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of paper pasting machines, in particular to a three-pressure paper shaft roller coating mechanism and a pasting machine. Background Art

[0002] A pasting machine is a device that evenly coats glue on the surface of paper when bonding and processing cardboard and paper. When the pasting machine works, the glue is distributed by a glue dispenser and then applied to the paper through the main roller for coating. A pressure paper shaft is arranged below the main roller for coating, and the paper is flattened and extended by the pressure paper shaft.

[0003] Traditional pasting machines have a single pressure paper shaft. When applying glue to relatively thick paper, it is easy to cause problems such as uneven paper surface and easy wrinkling. Subsequently, pasting machines with double pressure paper shafts emerged. For example, the Chinese utility model patent with the application number CN202322365463.5 discloses a coating mechanism and a paper pasting machine with double pressure paper shafts, which solves the problem of applying glue to relatively thick paper through the double pressure paper shaft method. During the production process, the pasting machine encountered new technical problems. When applying glue to relatively thick paper with creases, due to the uneven surface of the paper at the crease, the crease is concave or convex. When applying glue, the crease parallel to the axial direction of the main roller is easily bent by the paper part on the paper outlet side, resulting in uneven glue coating at the crease.

[0004] Currently, for the problems of uneven glue coating easily caused by the pasting machines with single pressure paper shafts and double pressure paper shafts in the related technology when applying glue to relatively thick paper with creases, no effective solutions have been proposed yet. Content of the Utility Model

[0005] In order to solve the deficiencies of the prior art, the utility model provides a three-pressure paper shaft roller coating mechanism and a pasting machine.

[0006] In a first aspect, the utility model provides a three-pressure paper shaft roller coating mechanism, which includes a main roller, an inlet paper pressure paper shaft, and an outlet paper pressure paper shaft. The inlet paper pressure paper shaft is arranged on the inlet side of the roller coating station. A coating channel is formed between the inlet paper pressure paper shaft and the main roller. The outlet paper pressure paper shaft is arranged on the outlet side of the roller coating station. A paper passing channel is formed between the outlet paper pressure paper shaft and the main roller. The paper passes through the coating channel and the paper passing channel in sequence. The inlet paper pressure paper shaft presses the paper against the roller surface of the main roller to roll the glue on the roller surface onto the paper. The outlet paper pressure paper shaft supports the paper on the outlet side, so that the paper is conveyed through the coating channel and the paper passing channel with a fixed arc.

[0007] In some of these embodiments, the paper - feeding presser shaft includes one of a first paper - feeding presser shaft and a second paper - feeding presser shaft. Both the first paper - feeding presser shaft and the second paper - feeding presser shaft are disposed below the main roller. When performing a gluing operation on the paper, the paper - discharging presser shaft is used in cooperation with the first paper - feeding presser shaft, or the paper - discharging presser shaft is used in cooperation with the second paper - feeding presser shaft.

[0008] In some of these embodiments, the paper - feeding presser shaft includes a first paper - feeding presser shaft and a second paper - feeding presser shaft. Both the first paper - feeding presser shaft and the second paper - feeding presser shaft are disposed below the main roller. When performing a gluing operation on the paper, the paper - discharging presser shaft is used in cooperation with the first paper - feeding presser shaft and the second paper - feeding presser shaft.

[0009] In some of these embodiments, the rotation direction of the paper - discharging presser shaft is opposite to that of the main roller, and the rotation direction of the paper - discharging presser shaft is the same as that of the paper - feeding presser shaft. The main roller is provided with a transmission gear, and each of the paper - feeding presser shafts and the paper - discharging presser shaft is provided with a driven gear meshing with the transmission gear to drive all the paper - feeding presser shafts and the paper - discharging presser shaft to rotate synchronously in the same direction. Among them, the paper - feeding presser shaft includes at least one of a first paper - feeding presser shaft and a second paper - feeding presser shaft.

[0010] In some of these embodiments, it further includes a first mounting bracket and a second mounting bracket pivotally connected to the frame. Each of the paper - feeding presser shafts is disposed on the first mounting bracket, and the paper - discharging presser shaft is disposed on the second mounting bracket. The paper - discharging presser shaft is detachably mounted on one side of the main roller through the second mounting bracket.

[0011] In some of these embodiments, both the first mounting bracket and the second mounting bracket are provided with mounting grooves, and bearings connected to the mounting grooves are disposed at the ends of each of the paper - feeding presser shafts and the paper - discharging presser shaft.

[0012] In some of these embodiments, the mounting groove is provided with an opening for disassembling and assembling the corresponding paper - feeding presser shaft and paper - discharging presser shaft.

[0013] In some of these embodiments, the first mounting bracket is connected to a first rotating rod, and the first rotating rod is provided with a first handle. By driving the first rotating rod and the first mounting bracket to rotate through the first handle, the paper - feeding presser shaft on the first mounting bracket is pressed towards or away from the roller surface of the main roller.

[0014] In some of these embodiments, the second mounting bracket is connected to a second rotating rod, and the second rotating rod is connected to a second handle. The second rotating rod and the second handle are connected by a sprocket - chain drive. By driving the second rotating rod and the second mounting bracket to rotate through the second handle, the paper - discharging presser shaft on the second mounting bracket is pressed towards or away from the roller surface of the main roller.

[0015] In a second aspect, the present utility model further provides a pasting machine, which includes a gluing device for applying glue to paper, and the gluing device includes the three-pressure paper shaft roller coating mechanism described in the first aspect.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: The paper is supported by the paper outlet pressure paper shaft on the paper outlet side, avoiding the front of the paper from sagging during gluing, which causes the paper to bend and warp at the crease, ensuring that the corresponding arc of the paper remains unchanged when passing through the gluing channel and the paper passing channel, enabling the paper with creases to be evenly coated with glue, improving the gluing quality, and enabling gluing operations on papers of different thicknesses and with creases; One paper outlet pressure paper shaft and two paper inlet pressure paper shafts can be interchanged, and the pressure paper shafts can be matched according to the gluing requirements of different papers, improving the compatibility of the pasting machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of a pasting machine equipped with a three-pressure paper shaft roller coating mechanism according to an embodiment of the present application.

[0018] Figure 2 is a three-dimensional structural schematic diagram of the three-pressure paper shaft roller coating mechanism according to an embodiment of the present application.

[0019] Figure 3 is a side view structural schematic diagram of the three-pressure paper shaft roller coating mechanism according to an embodiment of the present application.

[0020] Reference numerals: 101, roller coating station; 102, paper inlet side; 103, paper outlet side; 104, gluing channel; 105, paper passing channel;

[0021] 1, frame;

[0022] 2, three-pressure paper shaft roller coating mechanism; 21, main roller; 22, paper outlet pressure paper shaft; 23, first paper inlet pressure paper shaft; 24, second paper inlet pressure paper shaft;

[0023] 31, driving gear; 32, first driven gear; 33, second driven gear; 34, third driven gear;

[0024] 41, first mounting bracket; 42, first rotating rod; 43, first handle;

[0025] 51, second mounting bracket; 52, second rotating rod; 53, second handle; 54, sprocket; 55, chain; 56, mounting groove; 561, opening; 562, bearing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The detailed embodiments of the present utility model will be described with reference to the accompanying drawings.

[0027] Refer to Figure 1, The figure is a three-dimensional structural schematic diagram of a pasting machine equipped with a three-pressure paper shaft roll coating mechanism 2. The upper left is the paper inlet side 102, and the right side is the paper outlet side 103. The paper enters the roll coating station 101 of the frame 1 from the paper inlet side 102, and the glue is coated on the paper through the three-pressure paper shaft roll coating mechanism 2. The glue adheres to the paper through viscosity, and the paper coated with glue is conveyed from the paper outlet side 103 to the next process.

[0028] Reference Figures 1 to 3 , A three-pressure paper shaft roll coating mechanism 2 includes a main roll 21, a paper inlet pressure paper shaft, and a paper outlet pressure paper shaft 22. The paper inlet pressure paper shaft is arranged on the paper inlet side 102 of the roll coating station 101. A glue coating channel 104 is formed between the paper inlet pressure paper shaft and the main roll 21. The paper outlet pressure paper shaft 22 is arranged on the paper outlet side 103 of the roll coating station 101. A paper passing channel 105 is formed between the paper outlet pressure paper shaft 22 and the main roll 21. The paper sequentially passes through the glue coating channel 104 and the paper passing channel 105. The paper inlet pressure paper shaft presses the paper against the roll surface of the main roll 21 to roll the glue on the roll surface onto the paper. The paper outlet pressure paper shaft 22 supports the paper on the paper outlet side 103, so that the paper is conveyed through the glue coating channel 104 and the paper passing channel 105 with a fixed arc.

[0029] In a three-pressure paper shaft roll coating mechanism 2 according to an embodiment of the present application, the paper is pressed against the main roll 21 on the paper outlet side 103 by the paper outlet pressure paper shaft 22, so as to support the paper on the paper outlet side 103, avoiding the front of the paper from sagging during glue coating, which causes the paper to bend and warp at the crease, ensuring that the paper maintains a corresponding arc unchanged when passing through the glue coating channel 104 and the paper passing channel 105, enabling the paper with creases to be evenly coated with glue, improving the glue coating quality, and enabling glue coating operations on papers with different thicknesses and creases.

[0030] In order to select the optimal pressure paper shaft matching scheme according to different papers, the paper inlet pressure paper shaft can be selected with a single or double pressure paper shaft scheme. When the paper inlet pressure paper shaft selects a single pressure paper shaft scheme, the paper inlet pressure paper shaft includes one of the first paper inlet pressure paper shaft 23 and the second paper inlet pressure paper shaft 24. Both the first paper inlet pressure paper shaft 23 and the second paper inlet pressure paper shaft 24 are arranged below the main roll 21. When performing glue coating operations on the paper, one of the first paper inlet pressure paper shaft 23 and the second paper inlet pressure paper shaft 24 is selected for use, and the paper outlet pressure paper shaft 22 is used in cooperation with the first paper inlet pressure paper shaft 23, or the paper outlet pressure paper shaft 22 is used in cooperation with the second paper inlet pressure paper shaft 24.

[0031] When the paper inlet pressure paper shaft selects a two-pressure paper shaft scheme, the paper inlet pressure paper shaft includes the first paper inlet pressure paper shaft 23 and the second paper inlet pressure paper shaft 24. Both the first paper inlet pressure paper shaft 23 and the second paper inlet pressure paper shaft 24 are arranged below the main roll 21. When performing glue coating operations on the paper, the paper outlet pressure paper shaft 22 is used in cooperation with the first paper inlet pressure paper shaft 23 and the second paper inlet pressure paper shaft 24.

[0032] It should be further noted that the paper output pressure roller 22, the first paper input pressure roller 23, and the second paper input pressure roller 24 have the same size and installation structure. During actual use, the paper output pressure roller 22, the first paper input pressure roller 23, and the second paper input pressure roller 24 can be interchanged. When the pasting machine uses a single pressure roller, the second paper input pressure roller 24 is used. When using a double pressure roller, any two of the paper output pressure roller 22, the first paper input pressure roller 23, and the second paper input pressure roller 24 can be selected according to different papers. When using a triple pressure roller, the paper output pressure roller 22, the first paper input pressure roller 23, and the second paper input pressure roller 24 are used simultaneously, enabling the pasting machine to select the corresponding number of pressure rollers according to different papers.

[0033] It can be understood that with such a setting, when performing glue coating operations through the triple pressure roller coating mechanism 2, depending on the size, hardness, thickness, whether there are creases, glue parameters, and glue coating thickness of the paper, etc., during the process of pressing the glue between the main roller 21 and the pressure roller, the bending arc of the paper will be different. When the paper is relatively thick and has creases at the same time, the front of the paper is supported by the paper output pressure roller 22, which can ensure that the front of the paper will not bend at the crease. When the rear of the paper droops due to creases, the first paper input pressure roller 23 is needed. The first paper input pressure roller 23, the second paper input pressure roller 24, and the paper output pressure roller 22 cooperate with each other to adapt to the glue coating operation requirements of different papers and improve the compatibility of the pasting machine.

[0034] In order to enable the paper to complete the glue coating operation quickly, in this embodiment, referring to Figure 2 and Figure 3 , the rotation direction of the paper output pressure roller 22 is opposite to that of the main roller 21, and the rotation direction of the paper output pressure roller 22 is the same as that of the paper input pressure roller.

[0035] It can be understood that with such a setting, the paper enters the roller coating station 101 from the paper input side 102 and passes through the paper coating channel and the paper passing channel 105 in sequence. The rotation directions of the main roller 21, the paper output pressure roller 22, and the paper input pressure roller are opposite, so that the main roller 21 and the paper input pressure roller, and the main roller 21 and the paper output pressure roller 22 drive the paper to pass through the paper coating channel and the paper passing channel 105 in a rolling manner. The rotation speed of the main roller 21 is also fast, and the glue coating speed of the paper is also fast, thus ensuring that the paper can complete the glue coating operation quickly.

[0036] In order to enable the main roller 21 to drive the paper input pressure roller and the paper output pressure roller 22 to rotate synchronously, in this embodiment, referring to Figure 2 and Figure 3, the main roller 21 is provided with a driving gear 31, and each paper feeding and pressing shaft and paper discharging and pressing shaft 22 is provided with a driven gear meshing with the driving gear 31 to drive all the paper feeding and pressing shafts and paper discharging and pressing shafts 22 to rotate synchronously in the same direction; among them, the paper feeding and pressing shaft includes at least one of a first paper feeding and pressing shaft 23 and a second paper feeding and pressing shaft 24. The first paper feeding and pressing shaft 23 is provided with a first driven gear 32, the second paper feeding and pressing shaft 24 is provided with a second driven gear 33, and the paper discharging and pressing shaft 22 is provided with a third driven gear 34. The first driven gear 32, the second driven gear 33, and the third driven gear 34 are respectively meshed with the driving gear 31 to drive the first paper feeding and pressing shaft 23, the second paper feeding and pressing shaft 24, and the paper discharging and pressing shaft 22 to rotate synchronously in the same direction.

[0037] It can be understood that, with such a setting, the outer diameter of the driving gear 31 is the same as the outer diameter of the main roller 21, the outer diameter of the first driven gear 32 is the same as the outer diameter of the first paper feeding and pressing shaft 23, the outer diameter of the second driven gear 33 is the same as the outer diameter of the second paper feeding and pressing shaft 24, and the outer diameter of the third driven gear 34 is the same as the outer diameter of the paper discharging and pressing shaft 22. By driving the first driven gear 32, the second driven gear 33, and the third driven gear 34 to rotate simultaneously through the driving gear 31, the paper feeding and pressing shafts and the paper discharging and pressing shaft 22 are synchronously driven to rotate, and the rotation speeds are the same, so that the paper has the same rolling speed at the paper feeding and pressing shafts and the paper discharging and pressing shaft 22. The rotation speed of the paper feeding and pressing shafts and the paper discharging and pressing shaft 22 is greater than the rotation speed of the main roller 21, ensuring that the paper can quickly pass through the glue coating channel 104 and the paper passing channel 105.

[0038] For the convenience of installing and overhauling the pressing shafts, in this embodiment, referring to Figure 2 and Figure 3 , the three-pressing-shaft roll coating mechanism 2 further includes a first mounting frame 41 and a second mounting frame 51 respectively pivotally connected to the frame 1. Each paper feeding and pressing shaft is arranged on the first mounting frame 41. Among them, the first paper feeding and pressing shaft 23 and the second paper feeding and pressing shaft 24 are arranged on the first mounting frame 41, and the paper discharging and pressing shaft 22 is arranged on the second mounting frame 51. The paper discharging and pressing shaft 22 is detachably installed on one side of the main roller 21 through the second mounting frame 51.

[0039] It can be understood that, with such a setting, the first mounting frame 41 is arranged on the paper feeding side 102 of the roll coating station 101, and the first paper feeding and pressing shaft 23 and the second paper feeding and pressing shaft 24 are installed through the first mounting frame 41. The second mounting frame 51 is arranged on the paper discharging side 103 of the roll coating station 101, and the paper discharging and pressing shaft 22 is installed through the second mounting frame 51. The first mounting frame 41 and the second mounting frame 51 are both pivotally connected. By rotating the first mounting frame 41 and the second mounting frame 51, the paper feeding and pressing shafts and the paper discharging and pressing shaft 22 can be disassembled, assembled, and overhauled separately.

[0040] In order to ensure that the paper output pressing shaft 22 can rotate smoothly, in this embodiment, referring to Figure 2 , mounting grooves 56 are provided on both the first mounting bracket 41 and the second mounting bracket 51, and bearings 562 connected to the mounting grooves 56 are provided at the ends of each paper input pressing shaft and the end of the paper output pressing shaft 22. Among them, the bearing 562 at the end of the paper output pressing shaft 22 is located in the mounting groove 56 of the second mounting bracket 51. The inner ring of the bearing 562 is fixed to the end of the paper output pressing shaft 22, and the outer ring of the bearing 562 contacts the bottom of the mounting groove 56.

[0041] It should be further noted that mounting grooves 56 for mounting the first paper input pressing shaft 23 and the second paper input pressing shaft 24 are provided on the first mounting bracket 41, and the mounting grooves 56 of the first mounting bracket 41 are the same size as the mounting grooves 56 of the second mounting bracket 51 to facilitate the interchange between the paper output pressing shaft 22, the first paper input pressing shaft 23, and the second paper input pressing shaft 24.

[0042] It can be understood that with such a setting, the paper output pressing shaft 22 rotates self - driven under the drive of the main roller 21 through the transmission gear 31 and the third driven gear 34. During the rotation process, the paper output pressing shaft 22 maintains a stable connection with the second mounting bracket 51 through the bearing 562, ensuring that the paper output pressing shaft 22 can rotate smoothly, enabling the paper output pressing shaft 22 and the main roller 21 to convey the paper in a rolling manner.

[0043] In order to facilitate the disassembly and assembly of the paper output pressing shaft 22, in this embodiment, referring to Figure 2 , the mounting groove 56 is provided with an opening 561 for disassembling and assembling the corresponding paper input pressing shaft and the paper output pressing shaft 22.

[0044] It can be understood that with such a setting, the paper output pressing shaft 22 is mounted between two second mounting brackets 51, and there is a third driven gear 34 on the paper output pressing shaft 22, making it impossible to disassemble and assemble the paper output pressing shaft 22 along the axial direction. Through the opening 561 of the mounting groove 56 facing the main roller 21, the paper output pressing shaft 22 can be inserted into the mounting groove 56 or removed from the mounting groove 56 in a direction perpendicular to the axial direction. When it is necessary to disassemble and assemble the paper output pressing shaft 22, rotate the second mounting bracket 51 to make the opening 561 of the mounting groove 56 face the outside of the main roller 21, thus facilitating the disassembly and assembly of the paper output pressing shaft 22.

[0045] In order to rotate the first mounting bracket 41, in this embodiment, referring to Figure 2 and Figure 3 , the first mounting bracket 41 is connected with a first rotating rod 42, and a first handle 43 is provided on the first rotating rod 42. The first handle 43 is used to drive the first rotating rod 42 and the first mounting bracket 41 to rotate, so as to drive the first paper input pressing shaft 23 and the second paper input pressing shaft 24 on the first mounting bracket 41 to press against or away from the roller surface of the main roller 21.

[0046] It can be understood that with such an arrangement, the first mounting bracket 41 can be driven by the first handle 43 to rotate around the first rotating rod 42. The rotating first mounting bracket 41 can ensure that the cylindrical surfaces of the first paper feeding and pressing roller 23 and the second paper feeding and pressing roller 24 can be tightly attached to the roller surface of the main roller 21 during the gluing operation, and can also be disassembled and assembled away from the main roller 21 during disassembly and assembly for the first paper feeding and pressing roller 23 and the second paper feeding and pressing roller 24.

[0047] To rotate the first mounting bracket 41, in this embodiment, referring to Figure 2 and Figure 3 , the second mounting bracket 51 is connected with a second rotating rod 52, and the second rotating rod 52 is connected with a second handle 53. The second handle 53 drives the second rotating rod 52 and the second mounting bracket 51 to rotate, so as to drive the paper discharging and pressing roller 22 on the second mounting bracket 51 to press against or away from the roller surface of the main roller 21.

[0048] It can be understood that with such an arrangement, the second mounting bracket 51 can be driven by the second handle 53 to rotate around the second rotating rod 52. The rotating second mounting bracket 51 can ensure that the paper discharging and pressing roller 22 can lean against the roller surface of the main roller 21 during the gluing operation, and can also be disassembled and assembled away from the main roller 21 during disassembly and assembly for the paper discharging and pressing roller 22.

[0049] To avoid interference between the first handle 43 and the second handle 53, in this embodiment, referring to Figure 2 and Figure 3 , the second rotating rod 52 and the second handle 53 are connected by a sprocket 54 and a chain 55 in a transmission connection.

[0050] It can be understood that with such an arrangement, the second rotating rod 52 and the second handle 53 are driven by the sprocket 54 and the chain 55, so that the second handle 53 can be arranged at a position far from the second rotating rod 52, the second rotating rod 52 is relatively close to the first rotating rod 42, and the first handle 43 swings up and down at a relatively large angle. By separating the second handle 53 from the second rotating rod 52, the up-and-down swinging movement of the first handle 43 and the up-and-down swinging movement of the second handle 53 will not affect each other.

[0051] In the embodiment of the present application, by arranging the paper discharging and pressing roller 22 for supporting the paper on the paper discharging side 103 of the roll coating station 101, the paper can be stably attached to the roller surface of the main roller 21 on the paper discharging side 103, so that the contact area between the roller surface of the main roller 21 and different positions of the paper remains consistent, avoiding the front part of the paper from sagging during gluing, causing the paper to bend and warp at the crease, ensuring that the paper maintains the corresponding arc unchanged when passing through the gluing channel 104 and the paper passing channel 105, enabling the paper to be evenly coated with glue at the crease, improving the gluing quality, and driving the second mounting bracket 51 to rotate by the up-and-down swinging handle, so that the second mounting bracket 51 can be quickly switched between the gluing position and the disassembly and assembly position, facilitating the disassembly, assembly and maintenance of the paper discharging and pressing roller 22.

[0052] The embodiment of the present application further provides a sizing machine, which includes a sizing device for sizing paper, and the sizing device includes the three-pressure paper shaft roller coating mechanism 2 of the above embodiment.

[0053] The above does not impose any limitation on the technical scope of the present utility model. Any modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A three-pressing-axis roller coating mechanism, characterized in that: It includes a main roller, a paper-feeding press shaft and a paper-discharging press shaft. The paper-feeding press shaft is arranged on the paper-feeding side of the roller coating station. A gluing channel is formed between the paper-feeding press shaft and the main roller. The paper-discharging press shaft is arranged on the paper-discharging side of the roller coating station. A paper-passing channel is formed between the paper-discharging press shaft and the main roller. The paper passes through the gluing channel and the paper-passing channel in sequence. The paper-feed press shaft presses the paper against the roller surface of the main roller to roll-coat the glue on the roller surface onto the paper. The paper-discharging press shaft holds the paper on the paper-discharging side so that the paper is transported from the gluing channel and the paper-passing channel with a fixed arc.

2. The three-pressing-shaft roller coating mechanism according to claim 1 is characterized in that: The paper feed press shaft includes one of a first paper feed press shaft and a second paper feed press shaft, and the first paper feed press shaft and the second paper feed press shaft are both arranged below the main roller. When gluing paper, the paper discharge press shaft is used in conjunction with the first paper feed press shaft, or the paper discharge press shaft is used in conjunction with the second paper feed press shaft.

3. The three-pressing-shaft roller coating mechanism according to claim 1 is characterized in that: The paper feed press shaft includes a first paper feed press shaft and a second paper feed press shaft, both of which are arranged below the main roller. When gluing paper, the paper output press shaft is used in conjunction with the first paper feed press shaft and the second paper feed press shaft.

4. The three-pressing-shaft roller coating mechanism according to claim 1, characterized in that: The rotation direction of the paper output press shaft is opposite to that of the main roller, and the rotation direction of the paper output press shaft is the same as that of the paper input press shaft; the main roller is provided with a transmission gear, and each of the paper input press shaft and the paper output press shaft is provided with a passive gear meshing with the transmission gear to drive all the paper input press shafts and the paper output press shaft to rotate synchronously in the same direction, wherein the paper input press shaft includes at least one of the first paper input press shaft and the second paper input press shaft.

5. The three-pressing-shaft roller coating mechanism according to claim 4 is characterized in that: It also includes a first mounting frame and a second mounting frame respectively pivotally connected to the frame, each of the paper input press shaft is arranged on the first mounting frame, the paper output press shaft is arranged on the second mounting frame, and the paper output press shaft is detachably mounted on one side of the main roller through the second mounting frame.

6. The three-pressing-shaft roller coating mechanism according to claim 5, characterized in that: The first mounting frame and the second mounting frame are both provided with mounting grooves, and the end of each of the paper input and paper pressing shafts and the end of the paper output and paper pressing shafts are both provided with bearings connected with the mounting grooves.

7. The three-pressing-shaft roller coating mechanism according to claim 6, characterized in that: The installation slot is provided with an opening for disassembling and installing the corresponding paper input press shaft and paper output press shaft.

8. The three-pressing-shaft roller coating mechanism according to claim 5, characterized in that: The first mounting frame is connected to a first rotating rod, which is provided with a first handle. The first rotating rod and the first mounting frame are rotated by the first handle to drive the paper feeding and pressing shaft on the first mounting frame to press toward or away from the roller surface of the main roller.

9. The three-pressing-shaft roller coating mechanism according to claim 5, characterized in that: The second mounting frame is connected to a second rotating rod, and the second rotating rod is connected to a second handle. The second rotating rod and the second handle are connected via a sprocket chain transmission. The second handle drives the second rotating rod and the second mounting frame to rotate, so as to drive the paper output pressing shaft on the second mounting frame to be pressed toward or away from the roller surface of the main roller.

10. A gluing machine, comprising a gluing device for gluing paper, characterized in that: The gluing device comprises the three-pressing-paper-shaft roller coating mechanism according to any one of claims 1 to 9.

Images