A paper roll cutting device

Abstract

The present invention relates to the technical field of roll paper processing equipment, and in particular to a roll paper cutting device, including a paper pushing mechanism and a linear drive mechanism, wherein the paper pushing mechanism includes an air expansion shaft and a paper pushing frame, wherein the air expansion shaft is rotatably arranged on the paper pushing frame, and the shaft diameter of the air expansion shaft is variable after ventilation, and is used for tightening and positioning the paper core of the roll paper; the output end of the linear drive mechanism is connected to the paper pushing frame to drive the paper pushing frame to move along the conveying direction of the roll paper. On the one hand, a paper pushing mechanism with an air expansion shaft is used to replace the original roller to position the roll paper, thereby preventing the roll paper from moving and scratching the end surface of the roll paper, and ensuring the flatness of the end surface of the roll paper; on the other hand, the paper pushing mechanism only fixes one side of the end surface of the roll paper, and when the roll paper is cut once, there is no need to cut the cut part separately, and the remaining part can be cut for the second time, thereby realizing continuous cutting of the roll paper, and improving the production efficiency and equipment utilization of the device.

Description

Technical Field

[0001] The invention relates to the technical field of roll paper processing equipment, and in particular to a roll paper cutting device. Background Art

[0002] The roll paper cutting device is one of the most commonly used equipment in the printing and packaging industry. During the processing of the roll paper, the roll paper cutting device uses a band saw to cut the roll paper during its rotation, cutting a long roll paper into multiple roll paper of a specific length, and then packaging the roll paper.

[0003] In the process of cutting the paper roll, the existing paper roll cutting device causes the paper roll to move due to the change in the force direction when the paper roll is rotated and cut. At present, most of them use two positioning rollers to contact the end face of the paper roll to fix and position the paper roll. The rolling contact friction between the roller and the paper roll can easily scratch the end face of the paper roll, thus affecting the quality of the finished paper roll. On the other hand, when the roller prevents the paper roll from moving, the end face of the paper roll is easily pressed and dented, thus affecting the positioning accuracy. At the same time, in the process of cutting the paper roll, both ends of the paper roll need to be fixed and positioned. After the cutting is completed, the cut part of the paper roll needs to be unloaded, and then the remaining paper roll needs to be repositioned before the second cutting can be performed, resulting in complicated and cumbersome operation, time waste, and low equipment efficiency.

[0004] Therefore, there is an urgent need for a roll paper cutting device to solve the above problems. Summary of the invention

[0005] An object of the present invention is to provide a roll paper cutting device, which can reduce scratches on the end surface of the roll paper during the cutting process and can achieve continuous cutting of the roll paper, thereby improving cutting accuracy and equipment utilization.

[0006] In order to achieve the above objectives, the following technical solutions are provided:

[0007] A roll paper cutting device, comprising:

[0008] The paper lifting mechanism comprises an air-expanding shaft and a paper lifting frame, wherein the air-expanding shaft is rotatably arranged on the paper lifting frame, and the shaft diameter of the air-expanding shaft is variable after ventilation, and is used for tightening and positioning the paper core of the paper roll;

[0009] The linear drive mechanism has an output end connected to the paper top frame to drive the paper top frame to move along the conveying direction of the roll paper.

[0010] As an optional solution for the paper roll cutting device, the top paper rack includes a mounting plate, a lifting drive assembly and a stand. The tail of the air expansion shaft is rotatably set on the mounting plate, and the output end of the lifting drive assembly is connected to the mounting plate to drive the mounting plate to drive the air expansion shaft to move up and down in a vertical direction. The lifting drive assembly is fixedly set on the stand, and the output end of the linear drive mechanism is connected to the stand to drive the stand to move along the conveying direction of the paper roll.

[0011] As an optional solution of the paper roll cutting device, the paper roll cutting device also includes a conveying mechanism for transmitting the paper roll, the conveying mechanism includes a roller base and a first roller group, the roller base is extended along the conveying direction of the paper roll, and the first roller group is liftably arranged on the roller base.

[0012] As an optional solution for the paper roll cutting device, the conveying mechanism also includes a second roller group, and the first roller group and the second roller group are arranged along the output direction of the paper roll, and the first roller group and the second roller group are independently controlled separately, and the second roller group can be raised and lowered on the roller base for conveying the cut paper roll.

[0013] As an optional solution of a roll paper cutting device, the roll paper cutting device also includes a cutting mechanism, which includes a cutting box, a first dustproof door, a second dustproof door and a band saw for cutting roll paper, the band saw is arranged in the cutting box, the first dustproof door and the second dustproof door are respectively arranged at the feed end and the discharge end of the cutting box, and the cutting box, the first dustproof door and the second dustproof door form a cutting space.

[0014] As an optional solution for the paper roll cutting device, the first dustproof door can be raised and lowered on the cutting box, and the lower end of the first dustproof door is provided with an arc-shaped groove matching the outer contour of the paper roll; and / or the second dustproof door includes two door panels, and the two door panels move toward each other to close the discharge end of the cutting box.

[0015] As an optional solution of the roll paper cutting device, a displacement sensor is installed at the lower end of the first dustproof door for detecting the distance between the lower end surface of the first dustproof door and the peripheral side surface of the roll paper.

[0016] As an optional scheme of the paper roll cutting device, the paper roll cutting device also includes a feeding mechanism, which is arranged at the feeding end of the conveying mechanism, and the feeding mechanism includes a feeding hopper, a feeding base and a feeding drive. The feeding hopper is provided with an arc groove for loading the paper roll, and the two ends of the feeding base are respectively hinged to the feeding hopper and the feeding drive. The output end of the feeding drive is hinged to the feeding hopper and can drive the feeding hopper to rotate around the hinge with the feeding base to push the paper roll onto the conveying mechanism.

[0017] As an optional solution for the paper roll cutting device, the paper roll cutting device also includes a unloading mechanism arranged at the unloading end of the conveying mechanism, the unloading mechanism includes a unloading rack, a unloading rack base and a unloading rack driving member, the upper and lower ends of the unloading rack are respectively hinged to the unloading rack driving member and the unloading rack base, and the unloading rack driving member drives the unloading rack to rotate around the hinge between it and the unloading rack base to push the cut paper roll out of the conveying mechanism.

[0018] As an optional solution for the roll paper cutting device, the unloading mechanism is provided at the loading end of the conveying mechanism, and the unloading rack and the loading mechanism are symmetrically arranged on both sides of the conveying mechanism. The unloading rack is used to prevent the roll paper loaded by the loading hopper from falling from one side of the unloading rack.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The paper roll cutting device provided by the present invention includes a paper pushing mechanism and a linear drive mechanism. The linear drive mechanism drives the paper pushing mechanism to move so that the air expansion shaft is inserted into the paper core hole. Then the air expansion shaft inflates and tightens the paper core hole. The linear drive mechanism transports the paper roll to the cutting position, avoiding the contact between the paper pushing mechanism and the end surface of the paper roll. On the one hand, the paper pushing mechanism with the air expansion shaft is used to replace the original roller to position the paper roll, thereby preventing the paper roll from moving and scratching the end surface of the paper roll, thereby ensuring the flatness of the end surface of the paper roll; on the other hand, the paper pushing mechanism only fixes one side of the end surface of the paper roll. When the paper roll is cut once, there is no need to cut the cut part separately, and the remaining part can be cut for the second time, thereby realizing continuous cutting of the paper roll. The operation is simple, time is saved, and production efficiency and equipment utilization are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0022] Figure 1 A schematic structural diagram of a roll paper cutting device in a first direction provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the structure of a paper lifting mechanism provided in an embodiment of the present invention;

[0024] Figure 3 A schematic structural diagram of a roll paper cutting device in a second direction provided by an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of a feeding mechanism provided in an embodiment of the present invention;

[0026] Figure 5 A schematic structural diagram of a material discharging mechanism provided in an embodiment of the present invention.

[0027] Reference numerals:

[0028] 1-paper lifting mechanism; 11-air expansion shaft; 12-paper lifting rack; 121-mounting plate; 122-lifting drive assembly; 123-stand;

[0029] 2-Linear drive mechanism;

[0030] 3-feeding mechanism; 31-feeding hopper; 311-arc groove; 32-feeding base; 33-feeding driving member;

[0031] 4-cutting mechanism; 41-first dustproof door; 411-arc groove; 412-displacement sensor; 42-second dustproof door; 421-door panel; 43-band saw; 44-cutting box;

[0032] 5- conveying mechanism; 51- first roller set; 52- second roller set; 53- roller base;

[0033] 6-feeding mechanism; 61-feeding rack; 62-feeding rack base; 63-feeding rack driving member; 64-feeding rack driving member base;

[0034] 7- Rollers. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0036] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product is usually placed when in use, and are only for the convenience of describing the present invention, 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 limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, or to distinguish different structures or components, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Figure 1 The schematic diagram of the structure of the roll paper cutting device provided in the present embodiment in the first direction includes a paper-pushing mechanism 1, a linear drive mechanism 2, a feeding mechanism 3, a cutting mechanism 4, a conveying mechanism 5, a feeding mechanism 6 and a control module (not shown in the figure). Among them, the feeding mechanism 3 is used for feeding the roll paper, the linear drive mechanism 2 is used to drive the paper-pushing mechanism 1 to move along the roll paper conveying direction so that the paper-pushing mechanism 1 can position or convey the roll paper, the cutting mechanism 4 is used to cut the roll paper, the conveying mechanism 5 is used to convey the roll paper, and the feeding mechanism 6 is used to unload the roll paper. The control module is used to control the start or stop of the paper-pushing mechanism 1, the linear drive mechanism 2, the feeding mechanism 3, the cutting mechanism 4, the conveying mechanism 5 and the feeding mechanism 6 to realize the fully automatic feeding, positioning, conveying, cutting and unloading of the roll paper.

[0039] In this embodiment, the paper roll cutting device further includes rotatable rollers 7, and two rotatable rollers 7 are symmetrically arranged on both sides of the conveying mechanism 5. The rotating rollers 7 are used to drive the paper roll to rotate, so that the cutting mechanism 4 can cut the paper roll, shortening the moving distance of the band saw 43 and improving the cutting efficiency.

[0040] In the prior art, when the paper roll is rotated and cut, positioning rollers are usually set at both ends of the paper roll to position the paper roll. However, the positioning rollers cause serious wear on the end surfaces of the paper roll, affecting the positioning accuracy. In addition, the existing positioning roller positioning cannot achieve continuous cutting, affecting the cutting efficiency of the equipment.

[0041] In order to solve the problems of easy scratching of the end surface of the roll paper, inaccurate positioning, and inability to cut continuously in the process of cutting the roll paper in the prior art, Figure 2 The schematic diagram of the structure of the paper lifting mechanism 1 provided in the embodiment of the present invention includes an air-inflating shaft 11 and a paper lifting frame 12. The air-inflating shaft 11 is rotatably arranged on the paper lifting frame 12. The shaft diameter of the air-inflating shaft 11 is variable after ventilation, and is used for tightening and positioning the paper core of the paper roll. The output end of the linear drive mechanism 2 is connected to the paper lifting frame 12 to drive the paper lifting frame 12 to move along the conveying direction of the paper roll.

[0042] During the process of cutting the roll paper, it is cut while it is constantly rotating around its axis. Due to the change in the force direction, the roll paper moves, affecting the cutting accuracy. Therefore, the tail of the air expansion shaft 11 is rotatably connected to the mounting plate 121, so that the air expansion shaft 11 can rotate with the roll paper while tightening the paper core hole, thereby suppressing the movement of the roll paper.

[0043] In short, in the paper roll cutting device provided by the present invention, the paper push mechanism 1 is driven by the linear drive mechanism 2 to move so that the air expansion shaft 11 is inserted into the paper core hole, and then the air expansion shaft 11 is inflated to tighten the paper core hole, and the linear drive mechanism 2 transports the paper roll to the cutting position, avoiding the contact between the paper push mechanism 1 and the end surface of the paper roll. On the one hand, the paper push mechanism 1 with the air expansion shaft 11 is used to replace the original roller to position the paper roll, thereby preventing the paper roll from moving and scratching the end surface of the paper roll, thereby ensuring the flatness of the end surface of the paper roll; on the other hand, the paper push mechanism 1 only fixes one side of the end surface of the paper roll. When the paper roll is cut once, there is no need to cut the cut part separately, and the remaining part can be cut twice, thereby achieving continuous cutting of the paper roll, which is simple to operate, saves time, and improves production efficiency and equipment utilization.

[0044] Exemplarily, the linear drive mechanism 2 includes a servo motor, a lead screw, a guide rail and a lead screw nut, the lead screw nut is fixedly connected to the stand 123, the servo motor drives the air shaft 11 on the paper lifting mechanism 1 to move to the center of the paper core hole through the cooperation of the lead screw and the lead screw nut, the air shaft 11 is inflated and tightened in the paper core hole to fix the roll paper, and the servo motor continues to drive the paper lifting mechanism 1 to move along the guide rail to achieve the feeding of the roll paper. In addition, the encoder of the servo motor records the distance moved by the paper lifting mechanism 1 in real time, and sends the data to the control module, so that the control module can determine whether the roll paper reaches the cutting position, so that the control module can control the servo motor to stop, and at the same time control the cutting mechanism 4 to cut the roll paper.

[0045] Optionally, Figure 2The schematic diagram of the structure of the paper lifting mechanism provided in the embodiment of the present invention is that the paper lifting frame 12 includes a mounting plate 121, a lifting drive assembly 122 and a stand 123. The tail of the air-expanding shaft 11 is rotatably arranged on the mounting plate 121. The output end of the lifting drive assembly 122 is connected to the mounting plate 121 to drive the mounting plate 121 to drive the air-expanding shaft 11 to move up and down in the vertical direction. The lifting drive assembly 122 is fixedly arranged on the stand 123. The output end of the linear drive mechanism 2 is connected to the stand 123 to drive the stand 123 to move along the conveying direction of the roll paper. The installation size of the air-expanding shaft 11 is located in the middle position of the two rollers 7. The lifting drive mechanism 122 only needs to move the air-expanding shaft 11 in the vertical direction to realize the hole-finding and alignment of the paper core hole of the roll paper.

[0046] Specifically, depending on the processing order, the diameter of the processed paper roll is different. When the diameter of the paper roll increases, the lifting drive component 122 drives the air expansion shaft 11 to move upward; when the diameter of the paper roll is small, the upgrading drive component drives the air expansion shaft 11 to move downward. When the air expansion shaft 11 moves to the center of the paper core hole of the paper roll, the linear drive mechanism 2 drives the air expansion shaft 11 to insert into the paper core hole, and then ventilates and tightens it, so that the paper-pushing mechanism 1 tightens paper rolls of different diameters, simplifies the operation, and increases the versatility of the equipment.

[0047] Optionally, Figure 3 This is a schematic structural diagram of the second direction of the roll paper cutting device provided in an embodiment of the present invention, wherein the conveying mechanism 5 includes a roller base 53, a first roller group 51 and a second roller group 52, wherein the first roller group 51 and the second roller group 52 are both arranged on the roller base 53, the first roller group 51 is used to reduce the friction between the roll paper and the rotating drum during the feeding process, and the second roller group 52 is used to convey the cut roll paper to the unloading end of the conveying mechanism 5.

[0048] In this embodiment, the roller base 53 is extended along the conveying direction of the roll paper, and the first roller group 51 is raised and lowered on the roller base 53. The roll paper can roll forward on the raised first roller group 51 to reduce the friction between the roll paper and the roller 7.

[0049] Specifically, when the length of the paper roll is too long, it is easy to cause the center of gravity of the paper-pushing mechanism 1 to shift, affecting the stability of the equipment movement, so a first roller group 51 is set on the conveying mechanism 5, and when the paper-pushing mechanism 1 tightens the paper core, the first roller group 51 rises to lift the paper roll off the roller 7, and the linear drive mechanism 2 drives the paper-pushing mechanism 1 to move, so that the paper roll rolls on the conveying mechanism 5, reducing the friction between the paper roll and the roller 7 during the feeding process, avoiding the surface wear of the paper roll during the feeding process, and at the same time reducing the center of gravity offset of the paper-pushing mechanism 1, thereby achieving smooth operation of the paper-pushing mechanism 1.

[0050] Optionally, Figure 3This is a schematic structural diagram of the second direction of the roll paper cutting device provided in an embodiment of the present invention, wherein the first roller group 51 and the second roller group 52 are arranged along the output direction of the roll paper, and the first roller group 51 and the second roller group 52 are independently controlled separately, and the second roller group 52 is raised and lowered on a roller base 53 for conveying the cut roll paper.

[0051] Specifically, before the paper roll is cut, the second roller set 52 is located below the roller 7. After the paper roll is cut, the second roller set 52 rises to lift the paper roll off the roller 7. The power mechanism drives the rollers of the second roller set 52 to rotate and transport the cut paper roll to the unloading end, so that the paper pushing mechanism 1 can continue to move in the transport direction, thereby realizing continuous cutting of the paper roll and improving production efficiency.

[0052] Optionally, Figure 1 This is a structural schematic diagram of the first direction of the roll paper cutting device provided in an embodiment of the present invention, wherein the cutting mechanism 4 is arranged in the middle of the conveying mechanism 5, and the cutting mechanism 4 includes a cutting box 44, a first dustproof door 41, a second dustproof door 42 and a band saw 43 for cutting the roll paper, the band saw 43 is arranged in the cutting box 44, the first dustproof door 41 and the second dustproof door 42 are respectively arranged at the feeding end and the discharging end of the cutting box 44, and the cutting box 44, the first dustproof door 41 and the second dustproof door 42 form a cutting space.

[0053] Specifically, waste paper scraps will be generated during the process of the paper roll being cut by the band saw 43, and the rotating cutting of the paper roll further increases the flying of paper scraps and dust, which is not conducive to the normal breathing of workers. A first dustproof door 41 and a second dustproof door 42 are respectively provided at the inlet and outlet ends of the cutting box 44 to form a relatively closed space, which effectively suppresses the impact of the paper roll cutting device on the processing environment.

[0054] Exemplarily, a negative pressure storage box is provided at the lower part of the cutting box 44 of the roll paper cutting device to further collect waste paper scraps, realize waste utilization, and save paper resources.

[0055] Optionally, the first dustproof door 41 can be raised and lowered on the cutting box 44, and the lower end of the first dustproof door 41 is provided with an arc groove 411 matching the outer contour of the paper roll to minimize the distance between the first dustproof door 41 and the paper roll, reduce the escape of cutting paper scraps, and ensure air quality.

[0056] Specifically, during the first cutting of the paper roll, the feeding end of the cutting mechanism 4 cannot be completely closed due to the length of the paper roll, so an arc groove 411 is provided under the first dustproof door 41 to further increase the closure degree of the first dustproof door 41.

[0057] Since the distance between the band saw 43 of the cutting mechanism 4 and the discharge end of the cutting box 44 is usually greater than the cutting length of the paper roll, as shown in FIG. Figure 3 Combination Figure 1 As shown, therefore, the second dustproof door 42 is designed to include two door panels 421, and the two door panels 421 move toward each other to close the discharge end of the cutting box 44, so that the discharge end of the cutting box 44 can be completely closed to prevent the escape of cutting paper scraps.

[0058] In addition, after the paper roll is cut, the cut paper roll is transported out of the cutting mechanism 4 by the second roller group 52. In order to speed up the opening and closing speed of the discharge port, the second dustproof door 52 is set to be double-door closed, which improves the cutting speed of the equipment and also ensures the personal safety of the operator.

[0059] Optionally, a displacement sensor 412 is installed at the lower end of the first dustproof door 41 for detecting the distance between the lower end surface of the first dustproof door 41 and the peripheral side surface of the paper roll.

[0060] Specifically, during the paper roll cutting process, since the paper roll needs to rotate, the lower end of the first dustproof door 41 cannot be completely in contact with the peripheral side of the paper roll, so a displacement sensor 412 is installed at the lower end of the first dustproof door 41 to realize the stopping and anti-collision functions of the first dustproof door 41, thereby effectively protecting the peripheral side of the paper roll from being damaged.

[0061] In other embodiments, a universal ball may be provided on the lower end surface of the first dustproof door 41 to reduce the friction between the roll paper and the first dustproof door 41 during the rotation and cutting process of the roll paper, thereby effectively protecting the peripheral side surface of the roll paper from being damaged.

[0062] Alternatively, if Figure 4 Combination Figure 1 As shown, the feeding mechanism 3 is arranged at the feeding end of the conveying mechanism 5, and the feeding mechanism 3 includes a feeding hopper 31, a feeding base 32 and a feeding drive 33. The feeding hopper 31 is provided with an arc groove 311 for loading the roll paper, and the two ends of the feeding base 32 are respectively hinged to the feeding hopper 31 and one end of the feeding drive 33, and the other end of the feeding drive 33 is hinged to the feeding hopper 31, and can drive the feeding hopper 31 to rotate around the hinge between it and the feeding base 32 to push the roll paper onto the conveying mechanism 5.

[0063] When cutting a roll of paper with a large diameter, it is time-consuming and laborious to carry the roll of paper manually. The roll of paper is placed in the upper hopper 31. Further, optionally, the feeding drive member 33 uses a hydraulic cylinder, and the upper hopper 31 is provided with an arc groove 311 to achieve the fit of the roll of paper with the inner side of the upper hopper 31. When the hydraulic cylinder is in a contracted state, the upper hopper 31 is laid flat, the roll of paper is placed in the upper hopper 31, and then the hydraulic cylinder is extended to achieve the rotation of the upper hopper 31 toward the upper material end, and the roll of paper is lifted and pushed onto the conveying mechanism 5, so as to achieve automatic feeding of the equipment and improve production efficiency. In other embodiments, the feeding drive member 33 can also use a drive motor or a scissor telescopic mechanism to achieve the rotation of the upper hopper 31.

[0064] In other embodiments, the feeding drive member 33 may also be an electric push rod or a pneumatic cylinder.

[0065] Alternatively, if Figure 5 Combination Figure 3 As shown, the unloading mechanism 6 is arranged at the unloading end of the conveying mechanism 5, and the unloading mechanism 6 includes an unloading frame 61, an unloading frame base 62 and an unloading frame driving member 63. The upper and lower ends of the unloading frame 61 are respectively hinged to the unloading frame driving member 63 and the unloading frame base 62. The unloading frame driving member 63 drives the unloading frame 61 to rotate around the hinge between it and the unloading frame base 62 to push the cut roll paper out of the conveying mechanism 5. The unloading frame base 62 is hinged to the feeding end of the roller base 53, and the unloading frame driving member 63 is hinged to the unloading frame driving member base 64. The unloading frame driving member base 64 is installed on the ground and is in the same horizontal plane as the unloading frame base 62.

[0066] For example, when the swing angle of the lower material rack 61 is large, the lower material rack drive member base 64 and the lower material rack base 62 can be separately arranged to reasonably utilize the space; when the swing angle of the lower material rack 61 is small, the lower material rack drive member base 64 and the lower material rack base 62 can also be integrated like the loading base 32 to reduce the footprint of the equipment and improve space utilization.

[0067] For example, when cutting a large-diameter roll of paper, it is time-consuming and labor-intensive to manually carry the roll of paper. Further, optionally, the unloading rack driving member 63 uses a hydraulic cylinder, the output end of the hydraulic cylinder is hinged to the upper end of the unloading rack 61, and the tail of the hydraulic cylinder body is hinged to the unloading rack driving member base 64. Before pushing the paper, the hydraulic cylinder is in a retracted state, and the head of the unloading rack 61 faces the outside of the conveying mechanism 5. When the second roller group 52 conveys the cut roll of paper to the unloading end, the hydraulic cylinder extends to drive the upper end of the unloading rack 61 to turn to the roll of paper, and push the roll of paper out, thereby realizing automatic unloading of the roll of paper and improving production efficiency. In other embodiments, the unloading rack driving member 63 can also use a drive motor or a scissor-type telescopic mechanism to realize the rotation of the unloading rack 61.

[0068] In other embodiments, the unloading rack driving member 63 may also be an electric push rod or a pneumatic cylinder.

[0069] Exemplarily, a rotatable sleeve may be provided at the upper end of the unloading rack 61, and the sleeve is in contact with the paper roll. During the unloading process of the paper roll, the sleeve can rotate to reduce the friction between the paper roll and the unloading rack 61, effectively protecting the peripheral side of the paper roll from being damaged.

[0070] Optionally, continue as Figure 3As shown, the feeding end of the conveying mechanism 5 is provided with a feeding mechanism 6, and the feeding frame 61 and the feeding mechanism 3 are symmetrically arranged on both sides of the conveying mechanism 5, and the feeding frame 61 is used to prevent the roll paper loaded by the feeding hopper 31 from falling from one side of the feeding frame 61. The feeding mechanism 6 at the feeding end and the feeding mechanism 6 at the feeding end have the same functional structure, which will not be repeated here.

[0071] Specifically, when the unloading rack 61 at the loading end of the conveying mechanism 5 is in the preparation stage, the unloading rack driving member 63 is in an extended state, causing the unloading rack 61 to rotate to a position close to the loading hopper 31. When the loading mechanism 3 lifts the roll of paper to collide with the unloading rack 61, the unloading rack 61 falls back before the loading hopper 31, and the roll of paper falls back at the same time as the collided unloading rack 61. Finally, the roll of paper is stably placed on the roller 7, realizing automatic loading of the roll of paper. The loading hopper 31 and the unloading rack 61 cooperate to place the roll of paper, avoiding the roll of paper from falling from one side of the unloading rack 61 during the loading process, realizing the stable placement of the roll of paper, protecting personnel safety, and improving production efficiency.

[0072] For ease of understanding, the working principle and working process of the paper roll cutting device provided in this embodiment are as follows:

[0073] 1) During the preparation stage: the paper pushing mechanism 1 is located at the end limit position of the conveying mechanism 5, and there is a gap between the head of the air expansion shaft 11 arranged on the paper pushing mechanism 4 and the feeding end of the conveying mechanism 5 to prevent the roll paper from colliding with the air expansion shaft 11 during feeding. The air expansion shaft 11 is located at the lower end limit position of the paper pushing frame 12, and the first roller group 51 and the second roller group 52 are respectively located below the roller 7.

[0074] 2) Loading stage: the loading mechanism 3 cooperates with the unloading mechanism 6 at the loading end to place the roll of paper onto the loading end of the conveying mechanism 5.

[0075] 3) Cutting stage: the air expansion shaft 11 assembled on the paper pushing mechanism 1 moves in the vertical direction according to the size of the paper roll diameter until it is aligned with the center position of the paper roll paper core hole. After the linear drive mechanism 2 drives the air expansion shaft 11 to insert into the paper roll paper core, the air expansion shaft 11 ventilates and tightens the paper roll paper core hole. The first roller group 51 rises and lifts the paper roll to make it separate from the roller 7. The control module controls the paper pushing mechanism 1 to move a corresponding distance according to the specific length of the required paper roll. Then the first roller group 51 falls back to the bottom of the supporting rod 7, the second dustproof door 42 is closed, and the first dustproof door 41 moves down to a position with a certain gap from the side surface of the paper roll. The roller 7 drives the paper roll to rotate, and the paper roll begins to be rotated and cut. The paper core hole of the paper roll drives the tightened air expansion shaft 11 to rotate, and the paper pushing mechanism 1 with the air expansion shaft 11 restrains the movement of the paper core.

[0076] 4) Discharging stage: After cutting is completed, the second dustproof door 42 is opened, and the second roller group 52 conveys the cut part out of the paper cutting mechanism 4 and is then pushed out by the unloading mechanism 6 at the unloading end.

[0077] 5) Continuous cutting stage: the paper lifting mechanism 1 continues to move the specific distance required for cutting, and performs a cyclic operation to achieve continuous cutting of the roll paper.

[0078] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A paper roll cutting device, characterized in that: include: A paper lifting mechanism (1) comprises an air-expanding shaft (11) and a paper lifting frame (12), wherein the air-expanding shaft (11) is rotatably arranged on the paper lifting frame (12), and the shaft diameter of the air-expanding shaft (11) is variable after ventilation, and is used for tightening and positioning the paper core of the paper roll; A linear drive mechanism (2), the output end of which is connected to the top paper frame (12) to drive the top paper frame (12) to move along the conveying direction of the roll paper; The roll paper cutting device further comprises a conveying mechanism (5) for conveying the roll paper, the conveying mechanism (5) comprising a roller base (53) and a first roller group (51), the roller base (53) extending along the conveying direction of the roll paper, the first roller group (51) being movably arranged on the roller base (53); The roll paper cutting device further comprises a cutting mechanism (4), the cutting mechanism (4) comprising a cutting box (44), a first dustproof door (41), a second dustproof door (42) and a band saw (43) for cutting the roll paper, the band saw (43) being arranged in the cutting box (44), the first dustproof door (41) and the second dustproof door (42) being arranged at a feeding end and a discharging end of the cutting box (44) respectively, and the cutting box (44), the first dustproof door (41) and the second dustproof door (42) forming a cutting space.

2. The paper roll cutting device according to claim 1, characterized in that: The paper support frame (12) comprises a mounting plate (121), a lifting drive assembly (122) and a stand (123); the tail of the air expansion shaft (11) is rotatably arranged on the mounting plate (121); the output end of the lifting drive assembly (122) is connected to the mounting plate (121) to drive the mounting plate (121) to drive the air expansion shaft (11) to move up and down in a vertical direction; the lifting drive assembly (122) is fixedly arranged on the stand (123); the output end of the linear drive mechanism (2) is connected to the stand (123) to drive the stand (123) to move along the conveying direction of the roll paper.

3. The paper roll cutting device according to claim 1, characterized in that: The conveying mechanism (5) further comprises a second roller group (52), and the first roller group (51) and the second roller group (52) are arranged in an array along the output direction of the roll paper, and the first roller group (51) and the second roller group (52) are independently controlled separately, and the second roller group (52) is arranged on the roller base (53) in a liftable manner, and is used for conveying the cut roll paper.

4. The paper roll cutting device according to claim 1, characterized in that: The first dustproof door (41) is movably mounted on the cutting box (44), and the lower end of the first dustproof door (41) is provided with an arc-shaped groove (411) matching the outer contour of the paper roll; and / or The second dustproof door (42) comprises two door panels (421), and the two door panels (421) move towards each other to close the discharge end of the cutting box (44).

5. The paper roll cutting device according to claim 1, characterized in that: A displacement sensor (412) is installed at the lower end of the first dustproof door (41) for detecting the distance between the lower end surface of the first dustproof door (41) and the peripheral side surface of the roll paper.

6. The paper roll cutting device according to claim 1, characterized in that: The paper roll cutting device also includes a feeding mechanism (3), which is arranged at the feeding end of the conveying mechanism (5), and includes a feeding hopper (31), a feeding base (32) and a feeding drive (33). The feeding hopper (31) is provided with an arc groove (311) for loading the paper roll, and the two ends of the feeding base (32) are respectively hinged to the feeding hopper (31) and one end of the feeding drive (33). The output end of the feeding drive (33) is hinged to the feeding hopper (31) and can drive the feeding hopper (31) to rotate around the hinge between the feeding hopper and the feeding base (32) to push the paper roll onto the conveying mechanism (5).

7. The paper roll cutting device according to claim 6, characterized in that: The roll paper cutting device also includes a feeding mechanism (6) arranged at the feeding end of the conveying mechanism (5), the feeding mechanism (6) including a feeding frame (61), a feeding frame base (62) and a feeding frame driving member (63), the upper and lower ends of the feeding frame (61) are respectively hinged to the feeding frame driving member (63) and the feeding frame base (62), the feeding frame driving member (63) drives the feeding frame (61) to rotate around the hinge between the feeding frame and the feeding frame base (62) so as to push the cut roll paper out of the conveying mechanism (5).

8. The paper roll cutting device according to claim 7, characterized in that: The feeding end of the conveying mechanism (5) is provided with the unloading mechanism (6), the unloading frame (61) and the feeding mechanism (3) are symmetrically arranged on both sides of the conveying mechanism (5), and the unloading frame (61) is used to prevent the roll paper transferred by the feeding hopper (31) from falling from one side of the unloading frame (61).

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