Damper unit for paper roll, paper roll, and device for spreading paper sheet in paper roll into three-dimensional material

Abstract

The present invention relates to a damping unit for a paper roll, a paper roll, and a device for spreading a paper sheet in the paper roll into a three-dimensional material, the damping unit being provided so as to be able to be connected to a case of the device for spreading a paper sheet in the paper roll into a three-dimensional material. And the friction force applied to the paper tube of the paper roll can enable the actual tension when the paper roll is unfolded to be always kept in a theoretical tension range along with the change of the weight of the paper roll. The friction force applied to the paper tube of the paper roll by the damping unit for the paper roll can enable the actual tension to be always kept in a theoretical tension range along with the change of the weight of the paper roll when the paper roll is unfolded; in other words, the friction force applied to the paper tube of the paper roll can enable the tension change in the stretching process of the honeycomb paper blank in the paper roll to be small within the theoretical tension range, and therefore it can be guaranteed that paper sheets have the good unfolding effect under the condition that manual repeated adjustment is not needed.

Description

Technical Field

[0001] The invention relates to the technical field of packaging equipment, and in particular to a damping unit for a paper roll, a paper roll, and a device for unfolding paper sheets in the paper roll into a three-dimensional material. Background Art

[0002] When packaging some fragile items, they are generally wrapped with shock-resistant and cushioning materials, such as paper pads, bubble films, foam, etc. Among them, honeycomb paper, as a kind of paper pad, is widely used in packaging due to its easy processing.

[0003] In the process of using honeycomb paper, a rolled honeycomb paper blank is generally pulled out and unfolded to form honeycomb paper; then, the unfolded honeycomb paper (in some cases, honeycomb paper is combined with Sydney paper) is used to wrap and protect the items.

[0004] In order to make the honeycomb paper blank unfold into honeycomb paper, it is necessary to use the tension within the theoretical tension range to stretch the honeycomb paper blank on the paper roll. The honeycomb paper blank stretched by the tension within the theoretical tension range can be unfolded into honeycomb paper. During the whole unfolding process, if the tension applied to the paper roll is too large, the honeycomb paper will be broken; if the tension applied to the paper roll is too small, the honeycomb paper cannot be evenly unfolded. In actual production, the theoretical tension range is generally determined through experiments.

[0005] Currently, there are two main ways to stretch honeycomb paper: manual stretching and electric stretching by machine.

[0006] However, electric machines have problems such as poor flexibility, limited usage conditions and high prices, and the conditions for using electric machines are not met in many scenarios.

[0007] Manual honeycomb cartons often result in the inability to unfold the consumables as the roll diameter of the honeycomb paper blank decreases during the stretching process of the honeycomb paper; or the friction force needs to be constantly adjusted during use, resulting in low convenience and flexibility of the manual honeycomb cartons and poor unfolding effect. Summary of the invention

[0008] In order to solve at least one of the above problems, the inventors conducted a large number of research experiments and found that if the change in the friction force applied to the paper roll with the change in the weight of the paper roll can match the tension of the honeycomb paper blank when it is unfolded, the honeycomb paper blank can be kept unfolded with a good effect while avoiding the honeycomb paper from being broken. This is because when the honeycomb paper blank is stretched, the friction force applied to the paper roll is required to cooperate so that the tension applied to the honeycomb paper blank can be kept within the theoretical tension range.

[0009] Therefore, according to one aspect of the present invention, a damping unit for a paper roll is provided.

[0010] The damping unit for the paper roll is configured to be connected to a box body of a device for unfolding paper sheets in the paper roll into a three-dimensional material, and the friction force applied to the paper tube of the paper roll can ensure that the actual tension of the paper roll when unfolding is always maintained within the theoretical tension range as the weight of the paper roll changes. When the paper tube of the paper roll remains unchanged, the radius of the paper roll changes as the weight of the paper roll changes.

[0011] Since the friction force applied to the paper tube of the paper roll by the damping unit of the paper roll can make the actual tension of the paper roll when it is unrolled always keep within the theoretical tension range as the weight of the paper roll changes, that is, as the weight of the paper roll changes, the friction force applied to the paper tube of the paper roll also changes synchronously, and the changes of the two can also make the tension F of the honeycomb paper blank when it is unrolled 张力 The change is within a smaller range and is always maintained within the theoretical tension range, for example, between 20N-30N. In this way, a better unfolding effect of the paper sheet can be ensured without repeated manual adjustment. In addition to being used in manual honeycomb cartons, the damping unit for paper rolls can also be used to solve the problem of over-release of roll paper, such as the over-release problem in the production process of the high-stability cushioning pads protected by the Chinese utility model with announcement number CN220282265U; the over-release problem in the production process of the cushioning pads with strong anti-deformation ability protected by the Chinese utility model with announcement number CN220282264U; the over-release problem in the production process of the cushioning pads with strong tensile strength protected by the Chinese utility model with announcement number CN220392032U.

[0012] In some embodiments, the damping unit for a paper roll includes a fixing plate for installation on a box body of a device for unfolding paper sheets in a paper roll into a three-dimensional material; and a resistance member arranged on the fixing plate, wherein the friction force applied to the paper tube decreases as the weight of the paper roll decreases.

[0013] Assuming the paper tube remains unchanged, the change in friction due to the weight change of the paper roll can be calculated using the radius of the paper roll. 摩擦力 The product of the radius r of the paper tube is equal to the tension F of the honeycomb paper blank when it is unfolded. 张力 The product of the radius R of the paper roll and the radius r of the paper tube remains unchanged, so when the friction force F applied to the paper roll 摩擦力 As the weight of the paper roll (the radius R of the paper roll) decreases, the tension F that can ensure the honeycomb paper blank is unfolded 张力 Therefore, by adjusting the friction force F applied to the paper roll 摩擦力 The value of F, which is the tension F that can ensure the honeycomb paper blank is unfolded 张力 Try to stick as close to the theoretical tension value as possible so that the paper can be better unfolded.

[0014] In some embodiments, the resistance member is configured to apply a friction force to the paper tube under the action of the gravity of the paper roll, so that the resistance member can apply a variable friction force to the paper tube.

[0015] Therefore, when the weight of the paper roll is large, the friction force is mainly applied to the paper tube by the resistance member, and as the weight of the paper roll decreases (the radius of the paper roll decreases), the friction force applied to the paper tube by the resistance member also decreases, so that the friction force F applied to the paper roll is 摩擦力 The change can match the tension F of the honeycomb paper blank as much as possible. 张力 changes to ensure the unfolding effect of the honeycomb paper when the honeycomb paper is unfolded.

[0016] In some embodiments, based on the fact that the damping unit for a paper roll includes a fixed plate and a resistance member, the damping unit for a paper roll also includes an elastic member and a pressing block; wherein, the two opposite ends of the elastic member respectively abut against the fixed plate and the pressing block, and the resistance member is arranged on a side of the elastic member away from the pressing block, so that when the damping unit for a paper roll is sleeved in the inner wall of the paper tube and the two opposite ends of the pressing block and the resistance member abut against the inner wall of the paper tube, the pressing block can abut against the inner wall of the paper tube under the action of the elastic force of the elastic member.

[0017] Assuming the paper tube remains unchanged, the change in friction due to the weight change of the paper roll can be calculated using the radius of the paper roll. 摩擦力 The friction force exerted by the resistance member on the paper roll and the friction force exerted by the pressing member on the paper roll include the weight of the paper roll G 纸卷 The elastic coefficient μ of the resistance element 阻力件 The product of the elastic force F of the elastic member 弹簧力 The elastic coefficient μ of the resistance element 阻力件 The friction force exerted by the pressing member on the paper roll includes the elastic force F of the elastic member. 弹簧力 The elastic coefficient μ of the clamping member 压紧件 The product of; where the weight of the paper roll G 纸卷 Including the volume of the paper roll and the density of the paper roll ρ 纸卷 The volume of the paper roll is the product of the square of the radius of the paper roll and the square of the radius of the paper tube, pi, and the width of the paper roll W. 纸卷 The product of 纸卷 ·ρ 纸卷 g is a constant, taken as K; F 弹簧力 ·(μ 阻力件 +μ 压紧件 ) is also a constant, taken as N. Therefore, F 摩擦力 =K·(R 2 -r 2 )+N. And because F摩擦力 The product of the radius r of the paper tube is equal to the tension F of the honeycomb paper blank when it is unfolded. 张力 The product of the radius R of the paper roll; therefore, F 张力 =[K·(R 2 -r 2 )+N]·r / R=K`·R+N` / R, take K`=K·r, N`=(NK·r 2 )·r,F 张力 The functional relationship with the paper roll radius R is as follows Fig.11 As shown, curve C represents the functional relationship between K`·R and R, curve B represents the functional relationship between N` / R and R, and curve A represents the functional relationship between K`·R+N` / R and R (i.e., F 张力 The functional relationship between the roll radius R and the honeycomb paper blank can ensure the tension F when it is unfolded. 张力 As the radius of the paper roll decreases, the fluctuation value becomes smaller.

[0018] In some embodiments, the pressing block is arranged on the fixed plate by a first moving mechanism; the first moving mechanism is arranged to drive the pressing block to reciprocate along the center line connecting the pressing block and the resistance member. Because the pressing block can stably reciprocate along the center line connecting the pressing block and the resistance member under the action of the first moving mechanism, when the first moving mechanism drives the pressing block to move toward the resistance member until at least one of the pressing block and the resistance member is separated from the paper tube, the paper roll damping unit can be separated from the paper tube, and the paper roll damping unit can be disassembled from the paper tube, so as to replace the roll paper on the paper tube by replacing the paper tube, or replace or maintain the paper roll damping unit.

[0019] In some embodiments, the resistance element is made of a material with a friction coefficient in the range of 0.3-1.5, thereby ensuring the effect of the friction force generated by the resistance element on the paper tube.

[0020] In some embodiments, the compression block has a friction coefficient μ 压紧块 The value range is 0.1-0.8. In this way, the friction effect of the pressing block on the paper tube can be guaranteed. 阻力件 Greater than μ 压紧块 , so that in general, F 摩擦力 Mainly (G 纸卷 + F 弹簧力 )·μ 阻力件 Works, that is, F 摩擦力 The changing trend of is close to that of the paper roll weight.

[0021] In some embodiments, a limit block is provided on the pressing block to limit the distance between the pressing block and the resistance member, thereby ensuring a relatively stable positional relationship between the pressing block and the resistance member and reducing the possibility of partial scattering of the damping unit for the paper roll.

[0022] In some embodiments, positioning blocks for limiting the position of the elastic member are provided on the fixing plate and the pressing block, thereby reducing the possibility of partial scattering of the paper roll damping unit and improving the stability of the assembly structure of the paper roll damping unit.

[0023] According to another aspect of the present invention, a paper roll is provided, the paper roll comprising a paper tube, a roll of paper and the aforementioned paper roll damping unit; wherein the roll of paper is wound around the outer circumference of the paper tube; at least one end of the paper tube is sleeved on the paper roll damping unit, so that when the paper tube rotates relative to the paper roll damping unit, the paper roll damping unit can apply friction to the paper tube. The friction applied by the paper roll damping unit to the paper tube is variable (for example, as the weight of the paper roll decreases, the friction applied by the damping unit to the paper tube decreases).

[0024] Therefore, when the paper roll is used to unfold the paper sheets in the paper roll onto a device for unfolding the paper sheets in the paper roll into a three-dimensional material, the paper roll damping unit can be installed on the box of the device for unfolding the paper sheets in the paper roll into a three-dimensional material to ensure that when the paper sheets in the paper roll are stretched, the paper tube of the paper roll can rotate relative to the paper roll damping unit, so that the paper roll damping unit applies friction force to the paper tube; because the friction force applied to the paper tube of the paper roll by the paper roll damping unit can make the actual tension of the paper roll when unfolding always keep within the theoretical tension range as the weight of the paper roll changes, that is, as the radius (weight) of the paper roll changes, the friction force applied to the paper tube of the paper roll also changes synchronously, and the changes of the two can also make the tension F of the honeycomb paper blank when unfolded 张力 The change is within a smaller range, so as to ensure that the paper has a better unfolding effect without repeated manual adjustment.

[0025] In some embodiments, the fixed plate of the damping unit for paper roll is used to be installed on the box body; the two opposite ends of the resistance member and the pressing block of the damping unit for paper roll respectively abut against the inner wall of the paper tube, the side of the resistance member facing the pressing block abuts against the fixed plate, the end of the elastic member of the damping unit for paper roll that is away from the resistance member abuts against the pressing block, and the end of the elastic member that is away from the pressing block abuts against the fixed plate, and the pressing block applies a compressive stress set along the center line direction of the resistance member and the pressing block to the elastic member, so that the resistance member can apply friction to the paper tube through the fixed plate, and the pressing block can apply friction to the paper tube. Thus, the resistance member and the pressing block can squeeze the inner wall of the paper tube through the elastic force applied by the elastic member to the pressing block, and the gravity applied by the paper roll and the paper tube to the resistance member, so that when the paper sheet in the paper roll is stretched and the paper tube rotates relative to the resistance member, the resistance member and the pressing block apply friction to the paper tube.

[0026] In some embodiments, one end of the paper tube provided with the paper roll damping unit is flush with the end surface of the paper roll, and the other end of the paper tube extends out of the paper roll. Thus, the end of the paper tube not provided with the paper roll damping unit is connected to the second bracket of the device for unfolding the paper sheets in the paper roll into a three-dimensional material, for example, in a rotatable connection.

[0027] In some embodiments, the fixing plate is provided with a first blocking portion having a diameter greater than that of the paper tube, and the first blocking portion is provided with a plug-in portion for being non-rotatably plugged into the box body. Thus, the fixing plate can be prevented from sliding into the tube of the paper tube; the first blocking portion is non-rotatably connected to the box body through the plug-in portion, so that the first blocking portion and the box body can be detachably connected, and the operation is convenient.

[0028] According to another aspect of the present invention, there is provided a device for unfolding paper sheets in a paper roll into a three-dimensional material, the device for unfolding paper sheets in a paper roll into a three-dimensional material comprising a box body and the aforementioned paper roll damping unit; wherein the paper roll damping unit is arranged on the box body and is located in the accommodating cavity of the box body, and the position of the paper roll damping unit on the box body is arranged so that the paper roll on the paper tube mounted on the paper roll damping unit can be suspended relative to the box body; and a paper outlet opening is arranged on the box body.

[0029] Therefore, when the paper tube of the paper roll is sleeved on the damping unit for the paper roll, when the paper sheets in the paper roll are pulled out of the accommodating cavity of the box body from the paper outlet opening, the paper roll can drive the paper tube to rotate relative to the box body, and at the same time, the paper tube can rotate relative to the damping unit for the paper roll, so that the damping unit for the paper roll applies friction force to the paper tube.

[0030] In some embodiments, the box body is further provided with a rotatable connection structure for rotatably connecting with the end of the paper tube that is not provided with the paper roll damping unit, thereby ensuring that the paper tube can be stably installed on the box body.

[0031] In some embodiments, the box body includes a box body, a first bracket and a second bracket; the paper roll damping unit is arranged on the first bracket; the rotation connection structure is arranged on the second bracket; the first bracket and the second bracket are detachably arranged on the box body, and the first bracket and the second bracket are arranged to prevent the paper tube installed on the paper roll damping unit and the second bracket from sliding off the second bracket and the paper roll damping unit. Thus, the installation and removal of the paper tube on the box body are facilitated.

[0032] In some embodiments, the paper outlet opening is arranged parallel to the central axis of the paper tube to prevent the paper from contacting the box body when being discharged.

[0033] In some embodiments, the resistance member of the paper roll damping unit is located above the pressing block of the paper roll damping unit. 摩擦力 It includes the friction force exerted by the resistance member on the paper roll and the friction force exerted by the pressing member on the paper roll, that is, F 摩擦力 =K·(R 2 -r 2 )+N,K=π·W 纸卷 ·ρ 纸卷 g; N = F 弹簧力 ·(μ 阻力件 +μ 压紧件 ); The tension F of the honeycomb paper blank being unfolded 张力 =[K·(R 2 -r 2 )+N]·r / R=K`·R+N` / R, K`=K·r, N`=(NK·r 2 )·r. Thus, the tension F of the honeycomb paper blank when it is unfolded can be guaranteed. 张力 As the radius (weight) of the paper roll decreases, the fluctuation value becomes smaller. When the paper sheet of the paper roll is pulled, the resistance element rubs against the inner wall of the paper tube to generate resistance, thereby achieving the purpose of unfolding the paper sheet.

[0034] In some embodiments, the fixing plate of the paper roll damping unit is provided with an inserting portion for non-rotatably inserting into the box body, thereby realizing a quick and detachable connection between the paper roll damping unit and the box body, and the connection and removal process does not require the aid of tools, and the operation is convenient.

[0035] In some embodiments, the edge of the paper outlet opening is rounded, thereby preventing the paper sheets in the paper roll from being cut by the box body during the extraction process and reducing the resistance.

[0036] In some embodiments, the upper side of the paper outlet opening is provided with a flange folded upward and outward, thereby preventing the paper sheets in the paper roll from being cut by the box body during the extraction process and reducing the resistance.

[0037] In some embodiments, the box body is provided with an observation port that connects the receiving cavity of the box body with the outside, and a portion of the observation port is aligned with the outer diameter of the paper tube of the paper roll. Thus, the use of the paper roll in the box body can be observed at any time without opening the box for confirmation.

[0038] In some embodiments, a handle is provided on the box to facilitate the carrying of the box.

[0039] In some embodiments, the device for unfolding the paper sheets in the paper roll into a three-dimensional material further comprises a paper tube with one end wound around the damping unit for the paper roll and the other end rotatably arranged on the box body, and a paper roll wound around the outer circumference of the paper tube, wherein the paper roll is a honeycomb paper blank. Thus, the honeycomb paper blank can be unfolded into honeycomb paper by stretching it.

[0040] In some embodiments, a snow pear paper tube and snow pear paper wound on the snow pear paper tube are hingedly connected on one side of the paper roll damping unit in the box body facing the paper outlet opening, and the hinge axis of the snow pear paper tube is parallel to the central axis of the paper tube sleeved on the paper roll damping unit. Thus, while stretching the paper sheet on the roll paper wound outside the paper tube sleeved on the paper roll damping unit, the snow pear paper can also be pulled out to obtain a double-layer packaging paper.

[0041] In some embodiments, the box is provided with a stop structure for preventing the box placed on the table from moving in the paper discharging direction, so that when the paper is pulled out of the box from the paper discharging opening, the box is prevented from moving, so as to ensure the unfolding effect when the paper is pulled out. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic structural diagram of a damping unit for a paper roll according to one embodiment of the present invention; Figure 2 for Figure 1 A schematic structural diagram of a damping unit for a paper roll from another perspective; Figure 3 for Figure 2 The schematic cross-sectional structure diagram of the damping unit for a paper roll along the AA direction is shown; Figure 4 for Figure 1 A structural schematic diagram of the damping unit for a paper roll from another perspective; Figure 5 for Figure 1 The schematic diagram of the structure of the damping unit for the paper roll in the disassembled state is shown; Figure 6 for Figure 5 A schematic structural diagram of a damping unit for a paper roll from another perspective; Figure 7 This is a schematic structural diagram of a paper roll according to an embodiment of the present invention; Figure 8 for Figure 7 A schematic structural diagram of the paper roll from another perspective; Fig. 9 for Figure 8 A schematic diagram of the cross-sectional structure of the paper roll shown along the BB direction; Fig.10 for Fig. 9 The enlarged structural diagram of the paper roll at position C is shown; Fig.11 It is a graph showing the variation of the radius and tension of the paper roll of the present invention; Fig.12 It is a schematic structural diagram of a device for unfolding paper sheets in a paper roll into a three-dimensional material according to one embodiment of the present invention; Fig.13 for Fig.12 A schematic structural diagram of another perspective of the device for unfolding paper sheets in a paper roll into a three-dimensional material; Fig.14 for Fig.12 A schematic diagram of the structure of the device for unfolding paper sheets in a paper roll into a three-dimensional material in use; Fig.15 for Fig.14 A schematic structural diagram of the device for unfolding paper sheets in a paper roll into a three-dimensional material in another viewing angle, omitting the box; Fig.16 for Fig.15 A schematic structural diagram of the device for unfolding paper sheets in a paper roll into a three-dimensional material in another viewing angle omitting the box; Fig.17 for Fig.14 A schematic structural diagram of another perspective of the device for unfolding paper sheets in a paper roll into a three-dimensional material; Fig.18 It is a schematic structural diagram of a device for unfolding paper sheets in a paper roll into a three-dimensional material according to one embodiment of the present invention; Fig.19 for Fig.18 A schematic structural diagram of another perspective of the device for unfolding paper sheets in a paper roll into a three-dimensional material; Fig. 20 It is a schematic structural diagram of a device for unfolding paper sheets in a paper roll into a three-dimensional material provided with a stop structure according to one embodiment of the present invention; Fig.21 for Fig. 20 A schematic cross-sectional view of a device for unfolding paper sheets in a paper roll into a three-dimensional material; Reference numerals: 20, damping unit for paper roll; 21, fixing plate; 211, first slide groove; 212, positioning block; 213, arc groove; 214, first blocking portion; 215, second blocking portion; 216, plug-in portion; 217, first through hole; 218, second through hole; 219, third through hole; 22, resistance member; 23, elastic member; 24, pressing block; 241, first slider; 31, paper tube; 32, roll Paper; 321, paper sheet; 40, box body; 401, accommodating cavity; 402, handle; 41, box body; 411, paper outlet opening; 412, flange; 413, observation port; 42, first bracket; 421, plug-in hole; 43, second bracket; 431, rotating connection structure; 51, snow pear paper tube; 52, snow pear paper; 60, stopping structure; 61, first blocking part; 62, second blocking part; 70, table top. DETAILED DESCRIPTION

[0043] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0044] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include" and "comprise" include not only those elements, but also other elements that are not explicitly listed, or also include elements inherent to such processes, methods, articles or equipment. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or equipment that includes the elements. The terms used in this article are generally commonly used terms by those skilled in the art. If they are inconsistent with commonly used terms, the terms in this article shall prevail.

[0045] Furthermore, for ease of description, spatially relative terms such as "below," "beneath," "lower," "above," "upper," etc. may be used herein to describe the relationship of one element or component to another (or additional) elements or components as shown in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] Figures 1 to 6 A damping unit 20 for a paper roll according to an embodiment of the present invention is schematically shown.

[0048] like Figure 1 and Figure 3 As shown, the damping unit 20 for paper roll includes a fixed plate 21, a resistance member 22, an elastic member 23 and a clamping block 24; wherein the resistance member 22 and the elastic member 23 are mounted on the fixed plate 21; the clamping block 24 is arranged on the side of the elastic member 23 away from the resistance member 22; the resistance member 22, the elastic member 23 and the clamping block 24 are arranged so that when the damping unit 20 for paper roll is sleeved in the inner diameter of the paper tube 31, the clamping block 24 abuts against the inner wall of the paper tube 31 under the action of the elastic member 23, and the resistance member 22 abuts against the inner wall of the paper tube 31 under the action of the gravity of the paper roll, and the elastic force of the elastic member 23 acts on the resistance member 22 via the fixed plate 21. Specifically, the two opposite ends of the elastic member 23 abut against the fixed plate 21 and the pressing block 24 respectively, and the resistance member 22 is arranged on the side of the elastic member 23 away from the pressing block 24, so that the resistance member 22 and the pressing block 24 can abut against the inner wall of the paper tube 31; the resistance member 22 and the pressing block 24 are arranged to generate friction when they abut against the inner wall of the paper tube 31, and the resistance member 22 and the pressing block 24 are made of materials that can generate friction through pressure; wherein, the friction force applied by the resistance member on the paper roll includes the weight G of the paper roll 纸卷 The elastic coefficient μ of the resistance element 阻力件 The product of the elastic force F of the elastic member 弹簧力 The elastic coefficient μ of the resistance element 阻力件 The friction force exerted by the pressing member on the paper roll includes the elastic force F of the elastic member. 弹簧力 The elastic coefficient μ of the clamping member 压紧件 The product of .

[0049] Preferably, the resistance member 22 is made of a material with a friction coefficient value range of 0.3-1.5, such as polyurethane, tendon, synthetic rubber, etc. More preferably, the resistance member 22 is made of a material with a friction coefficient value range of 0.5-0.8. Preferably, the pressing block 24 is made of a material with a friction coefficient value range of 0.1-0.8, and has high wear resistance and toughness, and low brittleness, such as nylon, ABS (acrylonitrile-butadiene-styrene copolymer), POM (polyoxymethylene), PC (polycarbonate), etc. More preferably, the pressing block 24 is made of a material with a friction coefficient value range of 0.3-0.4. In some embodiments, the damping unit for the paper roll is configured so that the friction force applied to the paper tube 31 of the paper roll can keep the actual tension of the paper roll when it is unfolded within the theoretical tension range as the weight of the paper roll (when the condition of the paper tube 31 remains unchanged, that is, the radius of the paper roll) changes. As a result, it is possible to ensure that the paper sheet has a better unfolding effect without repeated manual adjustment.

[0050] In some embodiments, the resistance member 22 is configured to apply a friction force to the paper tube 31 under the action of the gravity of the paper roll, so that the resistance member 22 can apply a variable friction force to the paper tube 31 .

[0051] Assuming that the condition of the paper tube 31 remains unchanged, the change in frictional force designed for the weight change of the paper roll can be calculated using the radius of the paper roll. When using the damping unit 20 for the paper roll, the paper tube 31 of the paper roll is sleeved on the outside of the resistance member 22 and the pressing block 24, and the fixing plate 21 is fixedly installed on the box 40 of the device for unfolding the paper pieces in the paper roll into a three-dimensional material, and at the same time, the resistance member 22 is located above the pressing block 24. When the paper pieces 321 in the roll 32 on the paper tube 31 of the paper roll are stretched, the paper tube 31 will rotate relative to the box 40 around its own central axis, so that the paper tube 31 rotates relative to the resistance member 22 and the pressing block 24, and the resistance member 22 and the pressing block 24 will generate a frictional force F that hinders the rotation of the paper tube 31. 摩擦力 =K·(R 2 -r 2 )+N,K=π·W 纸卷 ·ρ 纸卷 g; N = F 弹簧力 ·(μ 阻力件 +μ 压紧件 ); therefore, the friction force applied to the paper feeding tube 31 decreases as the radius (weight) of the paper roll decreases, thereby ensuring that the device has a relatively stable stretching effect on the paper of the paper roll 32. Moreover, there is no need to repeatedly adjust the friction force during the operation of the operating device, and the operation is convenient.

[0052] In some preferred embodiments, Figure 3 and Figure 5As shown, the outer periphery of the resistance member 22 abuts against the inner wall of the paper tube 31 under the action of the elastic force applied to the fixing plate 21 by the elastic member 23. In some specific embodiments, as Figure 1 , Figure 5 and Figure 6 As shown, an arc groove 213 adapted to the outer periphery of the resistance member 22 is integrally formed or processed on the fixing plate 21, and a first blocking portion 214 and a second blocking portion 215 are respectively provided at both ends of the arc groove 213 to prevent the resistance member 22 from slipping out of the arc groove 213, thereby ensuring the stability of the resistance member 22 set on the fixing plate 21.

[0053] In some preferred embodiments, Figure 3 As shown, a first slide groove 211 is integrally formed or processed on the fixed plate 21, and the first slide groove 211 is set along the connecting direction of the resistance member 22 and the clamping block 24; a first slider 241 adapted to the first slide groove 211 is integrally formed, processed or connected on the clamping block 24. The mutually adapted first slide groove 211 and the first slider 241 define the trajectory of the clamping block 24 moving relative to the fixed plate 21 under the action of the elastic force of the elastic member 23, that is, the first slide groove 211 and the first slider 241 constitute a first moving mechanism of an embodiment, under the action of the first moving mechanism, the clamping block 24 can be driven to reciprocate relative to the fixed plate 21 along the connecting direction of the clamping block 24 and the resistance member 22, thereby defining the movement path of the clamping block 24 relative to the fixed plate 21 and the resistance member 22, thereby ensuring the stability of the movement of the clamping block 24 relative to the fixed plate 21 and the resistance member 22. Preferably, as Figure 3 As shown, a limit block is provided on the pressing block 24 to limit the distance of the pressing block 24 from the resistance member 22. In some specific embodiments, the limit block is integrally formed, processed or connected to the side of the first slider 241 away from the pressing block 24 and the first slide groove 211. In this way, the positional relationship between the pressing block 24 and the resistance member 22 can be relatively stably ensured, reducing the possibility of partial scattering of the damping unit 20 for the paper roll.

[0054] In some preferred embodiments, Figure 1 , Figure 3 , Figure 5 and Figure 6 As shown, the elastic member 23 is a compression spring or rubber. Figure 3 As shown, the fixing plate 21 and the pressing block 24 are provided with positioning blocks 212 for limiting the position of the elastic member 23. In some specific embodiments, the positioning blocks 212 are protrusions integrally formed, processed or connected to the fixing plate 21 and the pressing block 24. Thus, the possibility of partial scattering of the damping unit 20 for paper roll can be reduced, and the stability of the assembly structure of the damping unit 20 for paper roll can be improved.

[0055] In some preferred embodiments, Figure 3As shown, a through hole is integrally formed or processed on the fixing plate 21 to reduce the weight of the fixing plate 21 .

[0056] In some preferred embodiments, Figure 3 As shown, a countersunk hole is integrally formed or processed on the pressing block 24 to reduce the weight of the pressing block 24 .

[0057] In some preferred embodiments, Figure 4 As shown, at least one of the first through hole 217, the second through hole 218 and the third through hole 219 is integrally formed or processed on the fixing plate 21; wherein the first through hole 217 is aligned with the setting position of the clamping block 24; the second through hole 218 is aligned with the setting position of the elastic member 23; and the third through hole 219 is aligned with the setting position of the resistance member, so as to facilitate the calibration of the position of the fixing plate 21 and the processing of the mold.

[0058] In some preferred embodiments, Figure 1 and Figure 3 As shown, the resistance member 22 is cylindrical.

[0059] In some preferred embodiments, Figure 1 and Figure 3 As shown, the resistance member 22 is snap-connected to the fixing plate 21 .

[0060] Figures 7 to 10 A paper roll according to one embodiment of the invention is schematically shown.

[0061] like Figures 8 to 10As shown, the paper roll includes a paper tube 31, a roll paper 32 and the aforementioned paper roll damping unit 20; wherein the roll paper 32 is wound around the outer circumference of the paper tube 31; at least one end of the paper tube 31 is sleeved on the paper roll damping unit 20, so that when the paper tube 31 rotates relative to the paper roll damping unit 20, the paper roll damping unit 20 applies a variable friction force to the paper tube 31. In some specific embodiments, the fixed plate 21 of the paper roll damping unit 20 is used to be installed on the box body 40; the opposing ends of the resistance member 22 and the clamping block 24 of the paper roll damping unit 20 respectively abut against the inner wall of the paper tube 31, the side of the resistance member 22 facing the clamping block 24 abuts against the fixed plate 21, the end of the elastic member 23 of the paper roll damping unit 20 facing away from the resistance member 22 abuts against the clamping block 24, and the end of the elastic member 23 facing away from the clamping block 24 abuts against the fixed plate 21, and the clamping block 24 applies a compressive stress to the elastic member 23 set along the connecting direction of the resistance member 22 and the clamping block 24, so that the clamping block 24 can apply friction force to the paper tube 31, and the resistance member 22 can apply friction force to the paper tube 31 under the action of the gravity of the paper roll. Therefore, when the paper roll is used for a device for unfolding paper sheets in the paper roll into a three-dimensional material, the damping unit 20 for the paper roll can be installed on the box 40 of the device for unfolding paper sheets in the paper roll into a three-dimensional material, and the elastic force applied by the elastic member 23 to the fixed plate 21 and the clamping block 24 causes the clamping block 24 to squeeze the inner wall of the paper tube 31. At the same time, the gravity applied by the paper roll to the resistance member 22 can achieve that when the paper sheets 321 in the paper roll are stretched and the paper tube 31 rotates relative to the resistance member 22, the resistance member 22 and the clamping block 24 apply a variable friction force to the paper tube 31.

[0062] In some preferred embodiments, Figure 8 As shown, the contact surface of the resistance member 22 with the paper tube 31 is a convex surface of an arc surface, so as to reduce the wear of the resistance member 22 on the inner wall of the paper tube 31 when the paper tube 31 rotates relative to the resistance member 22. In some preferred embodiments, as Figure 8 As shown, the contact surface of the pressing block 24 with the paper tube 31 is a convex surface of an arc surface, so as to reduce the wear of the inner wall of the paper tube 31 by the pressing block 24 when the paper tube 31 rotates relative to the pressing block 24. So that the contact surface of the paper roll damping unit 20 that contacts the paper tube 31 is a convex surface of an arc surface.

[0063] In some preferred embodiments, Fig. 9 As shown, one end of the paper tube 31 provided with the paper roll damping unit 20 is flush with the end surface of the paper roll 32, and the other end of the paper tube 31 extends out of the outside of the paper roll 32. Thus, the end of the paper tube 31 not provided with the paper roll damping unit 20 is connected to the second bracket 43 of the device for unfolding the paper sheets in the paper roll into a three-dimensional material, for example, rotatably connected.

[0064] In some preferred embodiments, Fig.10As shown, the fixing plate 21 is provided with a first blocking portion 214 having a diameter greater than that of the paper tube 31, and the first blocking portion 214 is provided with an inserting portion 216 for non-rotatably inserting with the box body 40. Thus, the fixing plate 21 can be prevented from sliding into the tube of the paper tube 31; the first blocking portion 214 is non-rotatably connected to the box body 40 through the inserting portion 216, so that the first blocking portion 214 and the box body 40 can be detachably connected, and the operation is convenient.

[0065] Figures 12 to 17 A device for unfolding paper sheets in a paper roll into a three-dimensional material according to an embodiment of the present invention is schematically shown.

[0066] like Fig.12 As shown, the device for unfolding the paper sheets in the paper roll into a three-dimensional material includes a box body 40 and the aforementioned paper roll damping unit 20; wherein the paper roll damping unit 20 is arranged on the box body 40 and is located in the accommodating cavity 401 of the box body 40, and the position of the paper roll damping unit 20 on the box body 40 is arranged so that the paper roll 32 on the paper tube 31 mounted on the paper roll damping unit 20 can be suspended relative to the box body 40; the box body 40 is provided with a paper outlet opening 411. Therefore, when the paper tube 31 of the paper roll is mounted on the paper roll damping unit 20 (such as Fig.14 As shown in the figure, when the paper sheet 321 in the paper roll is stretched out from the accommodating cavity 401 of the box body 40 through the paper outlet opening 411, the paper roll 32 can drive the paper tube 31 to rotate relative to the box body 40, and at the same time, the paper tube 31 can rotate relative to the paper roll damping unit 20, so that the paper roll damping unit 20 applies a variable friction force to the paper tube 31.

[0067] In some embodiments, the box body 40 is further provided with a rotatable connection structure 431 for rotatably connecting with the end of the paper tube 31 where the paper roll damping unit 20 is not provided. Fig.13 As shown, the rotatable connection structure 431 is realized as a first mounting hole processed or integrally formed on the box body 40, and the paper tube 31 is inserted into the first mounting hole to realize the rotatable connection between the paper tube 31 and the box body 40.

[0068] In some preferred embodiments, Fig.12As shown, the box body 40 includes a box body 41, a first bracket 42 and a second bracket 43; the paper roll damping unit 20 is arranged on the first bracket 42, for example, the fixing plate 21 of the paper roll damping unit 20 is installed on the first bracket 42; the rotating connection structure 431 is arranged on the second bracket 43; the first bracket 42 and the second bracket 43 are detachably arranged on the box body 41, and the first bracket 42 and the second bracket 43 are arranged to prevent the paper tube 31 installed on the paper roll damping unit 20 and the second bracket 43 from being removed from the second bracket 43. and slide down on the damping unit 20 for paper roll. For example, the first bracket 42 and the second bracket 43 are arranged so that when the first bracket 42 and the second bracket 43 are installed in the box body 41, the first bracket 42 and the second bracket 43 can clamp the paper tube 31 therebetween. The damping unit 20 for paper roll can also be clamped between one of the first bracket 42 and the second bracket 43 and the paper tube 31. Specifically, for example, the surfaces of the first bracket 42 and the second bracket 43 that are intended to be separated are respectively against the inner wall of the accommodating cavity 401 of the box body 40. Since the first bracket 42 and the second bracket 43 can be removed from the box body 40, after the first bracket 42 and the second bracket 43 are removed from the box body 40, the distance between the first bracket 42 and the second bracket 43 is no longer constant, and the first bracket 42 and the second bracket 43 no longer clamp the paper tube 31 therebetween, so as to facilitate the installation and removal of the paper tube 31 on the box body 40. In some specific embodiments, such as Fig.13 and Fig.15 As shown, the first mounting hole is integrally formed or processed on the second bracket 43 .

[0069] In some preferred embodiments, Fig.13 and Fig.14 As shown, the paper discharge opening 411 is arranged parallel to the central axis of the paper tube 31 to prevent the paper from contacting the box body 40 when being discharged.

[0070] In some preferred embodiments, Fig.12 As shown in FIG. 1 , the resistance member 22 of the paper roll damping unit 20 is located above the pressing block 24 of the paper roll damping unit 20. Therefore, the friction force applied by the resistance member 22 to the paper tube 31 is the friction force [(G 纸卷 + F 弹簧力 )·μ 阻力件 ]; At the same time, the friction force applied by the pressing block 24 on the paper tube 31 is the friction force (F 弹簧力 ·μ 压紧件 ), when the paper piece 321 of the paper roll 32 is pulled, the resistance member 22 and the clamping block 24 rub against the inner wall of the paper tube 31 to generate resistance, thereby achieving the purpose of unfolding the paper piece 321.

[0071] In some preferred embodiments, Fig.16 As shown, the paper roll damping unit 20 and the box body 40 can be connected without rotation, so that the friction force of the paper roll damping unit 20 can stably act on the paper tube 31. Preferably, the paper roll damping unit 20 and the box body 40 are detachably connected. In some specific embodiments, such as Fig.16 As shown, the fixing plate 21 of the paper roll damping unit 20 is provided with an inserting portion 216 for non-rotatably inserting with the box body 40, and the box body 40 is provided with an inserting hole 421 adapted to the inserting portion 216, and the inserting hole 421 is, for example, provided on the first bracket 42. Thus, the paper roll damping unit 20 can be quickly and detachably connected to the box body 40, and the connection and removal process does not require the aid of tools, and the operation is convenient.

[0072] In some preferred embodiments, the edge of the paper outlet opening 411 is rounded, thereby preventing the paper pieces 321 in the paper roll 32 from being cut by the box body 40 during the extraction process, and reducing resistance.

[0073] In some preferred embodiments, Fig.13 , Fig.14 and Fig.17 As shown, the upper side of the paper outlet opening 411 is provided with a flange 412 folded upward and outward, thereby preventing the paper sheet 321 in the paper roll 32 from being cut by the box body 40 during the extraction process, and reducing the resistance at the same time.

[0074] In some preferred embodiments, Fig.13 and Fig.14 As shown, the box body 40 is provided with an observation port 413 that connects the accommodating cavity 401 of the box body 40 with the outside, and a portion of the observation port 413 is aligned with the outer diameter of the paper tube 31 of the paper roll. Thus, the use of the roll paper 32 in the box body 40 can be observed at any time without opening the box for confirmation.

[0075] In some preferred embodiments, Fig.13 and Fig.17 As shown, a handle 402 is provided on the box body 40. In some specific embodiments, as Fig.13 and Fig.17 As shown, the handle 402 is a countersunk hole or a through hole integrally formed or processed on the box body 40 to facilitate the transportation of the box body 40.

[0076] In some embodiments, Fig.15 and Fig.16 As shown, the device for unfolding the paper sheets in the paper roll into a three-dimensional material also includes a paper tube 31 with one end wound around the damping unit 20 for the paper roll and the other end rotatably arranged on the box body 40, and a roll paper 32 wound around the outer circumference of the paper tube 31, and the roll paper 32 is a honeycomb paper blank. Therefore, the honeycomb paper blank can be unfolded into honeycomb paper by stretching it.

[0077] In other embodiments, a mounting rod adapted to the inner diameter of the paper tube 31 is provided on the box body 40 to achieve a rotatable connection between the paper tube 31 and the box body 40 .

[0078] Figure 18 to Figure 19 A device for unfolding paper sheets in a paper roll into a three-dimensional material according to an embodiment of the present invention is schematically shown.

[0079] The device for unfolding paper sheets in a paper roll into a three-dimensional material in this embodiment is mainly different from the device for unfolding paper sheets in a paper roll into a three-dimensional material in the previous embodiment as follows: Fig.18 and Fig.19 As shown, the device for unfolding the paper pieces in the paper roll into a three-dimensional material also includes a snow pear paper tube 51 and a snow pear paper 52 wound on the snow pear paper tube 51. The snow pear paper tube 51 is hinged in the box body 40 and is located on the side of the paper roll damping unit 20 facing the paper outlet opening 411. The hinge axis of the snow pear paper tube 51 is parallel to the central axis of the paper tube 31 sleeved on the paper roll damping unit 20. Therefore, while stretching the paper piece 321 on the roll paper 32 wound outside the paper tube 31 sleeved on the paper roll damping unit 20, the snow pear paper 52 can also be pulled out to obtain a double-layer packaging paper.

[0080] Figure 20 to Figure 21 A device for unfolding paper sheets in a paper roll into a three-dimensional material according to an embodiment of the present invention is schematically shown.

[0081] Compared with the device for unfolding paper sheets in a paper roll into a three-dimensional material in the previous embodiment, the device for unfolding paper sheets in a paper roll into a three-dimensional material in this embodiment mainly differs as follows: a stopping structure 60 is provided on the box body 40 for preventing the box body 40 placed on the table 70 from moving along the paper output direction.

[0082] As one embodiment of the stop structure 60 , the stop structure 60 is an adhesive with release paper that connects the box body 40 and the table top 70 .

[0083] As another embodiment of the stop structure, Fig. 20 and Fig.21As shown, the stop structure 60 is a stopper provided on the box body 40, and is used to prevent the box body 40 from moving relative to the table 70 in the paper output direction when the box body 40 moves in the paper output direction. The stopper can abut against the table 70 when the box body 40 moves in the paper output direction (the stopper is connected to the box body 40), or abut against the box body 40 when the box body 40 moves in the paper output direction (the stopper can be fixed on the table 70). The stopper can be connected to the box body 40 by a fixed connection, for example, by a double-sided adhesive tape, or by a snap-fitting method. In some specific embodiments, such as Fig.21 As shown, the stopping structure 60 includes a first blocking portion 61 and a second blocking portion 62, and the stopping structure 60 is engaged on the box body 40 through the first blocking portion 61 and the second blocking portion 62, and the first blocking portion 61 and the second blocking portion 62 are configured so that the first blocking portion 61 can prevent the box body 40 from moving relative to it along the paper output direction X; the second blocking portion 62 abuts against the table 70 toward the side of the paper output opening 411 to prevent the stopping structure 60 from moving relative to the table 70 along the paper output direction x. In other specific embodiments, the stop structure is a limit piece arranged on the table 70, which is used to prevent the box body 40 from moving relative to the table 70 in the paper output direction when the box body 40 moves in the paper output direction. The limit piece can be fixed on the table 70, for example, the limit piece is fixed to the table 70 by an adhesive with release paper, and the limit piece fixed on the table 70 can also have at least one blocking portion. At this time, only one blocking portion is required to prevent the box body 40 from moving relative to it in the paper output direction X. For example, the blocking portion is arranged on a side of the box body 40 where the paper output opening 411 is provided.

[0084] As one embodiment of the limiting piece, the limiting piece may be a sheet metal part.

[0085] In the present invention, connection or installation is a fixed connection unless otherwise specified. Fixed connection can be implemented as a detachable connection or a non-detachable connection commonly used in the prior art. The detachable connection can be implemented by the prior art, such as threaded connection or key connection. The non-detachable connection can also be implemented by the prior art, such as welding or gluing.

[0086] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A damping unit for a paper roll, characterized in that: The damping unit for the paper roll is configured to be connected to a box of a device for unfolding paper sheets in the paper roll into a three-dimensional material, and the friction force applied to the paper tube of the paper roll can ensure that the actual tension of the paper roll when unfolding is always maintained within the theoretical tension range as the weight of the paper roll changes.

2. The damping unit for a paper roll according to claim 1, characterized in that: The damping unit for paper roll includes: a fixing plate for installation on a box body of a device for unfolding paper sheets in a paper roll into a three-dimensional material; and a resistance member arranged on the fixing plate, the friction force applied to the paper tube decreasing as the weight of the paper roll decreases.

3. The damping unit for a paper roll according to claim 2, characterized in that: The resistance member is configured to apply a friction force to the paper tube under the action of the gravity of the paper roll; and / or The paper roll damping unit also includes an elastic member and a pressing block; wherein, The two opposite ends of the elastic member respectively abut against the fixing plate and the pressing block, and the resistance member is arranged on the side of the elastic member away from the pressing block, so that the pressing block can abut against the inner wall of the paper tube under the elastic force of the elastic member.

4. The damping unit for a paper roll according to claim 3, characterized in that: The pressing block is arranged on the fixed plate through a first moving mechanism, and the first moving mechanism is arranged to drive the pressing block to reciprocate along the connecting direction of the pressing block and the resistance member; and / or The resistance member and the pressing block respectively adopt friction coefficient μ 阻力件 The friction coefficient μ is in the range of 0.3-1.

5. 压紧块 The value range is 0.1-0.

8.

5. The damping unit for a paper roll according to claim 4, characterized in that: The pressing block is provided with a limit block for limiting the distance between the pressing block and the resistance member; and / or The fixing plate and the pressing block are provided with positioning blocks for limiting the position of the elastic member.

6. A paper roll, characterized in that It comprises a paper tube, a roll of paper and a damping unit for a paper roll according to any one of claims 1 to 5; wherein: The roll paper is wound around the outer circumference of the paper tube; At least one end of the paper tube is sleeved on the paper roll damping unit, so that when the paper tube rotates relative to the paper roll damping unit, the paper roll damping unit can apply friction force to the paper tube.

7. The paper roll according to claim 6, characterized in that The fixing plate of the paper roll damping unit is used to be installed on the box body; The two opposite ends of the resistance member and the pressing block of the damping unit for paper roll respectively abut against the inner wall of the paper tube, the side of the resistance member facing the pressing block abuts against the fixed plate, the end of the elastic member of the damping unit for paper roll facing away from the resistance member abuts against the pressing block, the end of the elastic member facing away from the pressing block abuts against the fixed plate, and the pressing block applies a compressive stress to the elastic member along the connecting direction of the resistance member and the pressing block.

8. The paper roll according to claim 7, characterized in that The paper tube is arranged so that one end of the paper roll damping unit is flush with the end surface of the paper roll, and the other end of the paper tube extends out of the outside of the paper roll; and / or The fixing plate is provided with a first blocking portion whose diameter is larger than that of the paper tube, and the first blocking portion is provided with an inserting portion for being non-rotatably inserted with the box body.

9. A device for unfolding paper sheets in a paper roll into a three-dimensional material, characterized in that: It comprises a box body and a damping unit for a paper roll according to any one of claims 1 to 5; wherein: The paper roll damping unit is arranged on the box body and is located in the accommodating cavity of the box body, and the position of the paper roll damping unit on the box body is arranged so that the paper roll on the paper tube sleeved on the paper roll damping unit can be suspended relative to the box body; The box body is provided with a paper outlet opening.

10. The device for unfolding paper sheets in a paper roll into a three-dimensional material according to claim 9, characterized in that: The box body is also provided with a rotating connection structure for rotatably connecting to an end of the paper tube that is not provided with a damping unit for a paper roll.

11. The device for unfolding paper sheets in a paper roll into a three-dimensional material according to claim 10, characterized in that: The box body comprises a box body, a first bracket and a second bracket; The paper roll damping unit is arranged on the first bracket; The rotating connection structure is arranged on the second bracket; The first bracket and the second bracket are detachably arranged on the box body, and the first bracket and the second bracket are arranged to prevent the paper tube installed on the paper roll damping unit and the second bracket from sliding off the second bracket and the paper roll damping unit; and / or The paper outlet opening is arranged parallel to the central axis of the paper tube.

12. The device for unfolding paper sheets in a paper roll into a three-dimensional material according to claim 9, characterized in that: The resistance member of the paper roll damping unit is located above the pressing block of the paper roll damping unit; and / or The fixing plate of the paper roll damping unit is provided with an inserting portion for non-rotatably inserting with the box body.

13. The device for unfolding paper sheets in a paper roll into a three-dimensional material according to claim 9, characterized in that: The edge of the paper outlet opening is rounded; and / or The upper side of the paper outlet opening is provided with a flange folded upward and outward.

14. The device for unfolding paper sheets in a paper roll into a three-dimensional material according to claim 9, characterized in that: The box body is provided with an observation port connecting the accommodating cavity of the box body with the outside, and a portion of the observation port is aligned with the outer diameter of the paper tube of the paper roll; and / or the box body is provided with a handle.

15. The device for unfolding paper sheets in a paper roll into a three-dimensional material according to any one of claims 9 to 14, characterized in that: It also includes a paper tube with one end wound around the damping unit for the paper roll and the other end rotatably arranged on the box body, and a roll of paper wound around the outer circumference of the paper tube, wherein the roll of paper is a honeycomb paper blank; and / or A pear paper tube and pear paper wound on the pear paper tube are hingedly connected on one side of the damping unit for paper roll in the box body facing the paper outlet opening, and the hinge axis of the pear paper tube is parallel to the central axis of the paper tube sleeved on the damping unit for paper roll.

16. The device for unfolding paper sheets in a paper roll into a three-dimensional material according to any one of claims 9 to 14, characterized in that: The box body is provided with a stop structure for preventing the box body placed on the table from moving along the paper output direction.

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