A paper core tube packaging structure and rolling method for eliminating floor indentations

Abstract

The present invention relates to the field of PVC floor packaging technology, in particular to a paper core tube packaging structure and a rolling method for eliminating floor indentations, comprising a paper core tube for rolling up floor sheets, the outer surface of the paper core tube is provided with an inwardly concave groove, the concave depth of the groove matches the thickness of the floor sheet, the floor sheet is rolled up around the surface of the paper core tube with the groove as the starting point, a coaxial mounting groove is provided inside the paper core tube, the groove and the mounting groove both run through the length direction of the paper core tube; and a rolling assembly, the rolling assembly is used to drive the paper core tube to rotate, and the driving motor includes two driving modes of forward drive and reverse drive. The present invention cooperates with the paper core tube and the rolling assembly to first rotate forward for rolling, and then rotate reversely to achieve uniform gaps, which can eliminate the indentations produced by the floor sheet being rolled up and packaged by the paper core tube, and reduce the adverse effects of the packaging on the appearance of the floor.

Description

Technical Field

[0001] The invention relates to the technical field of PVC floor packaging, in particular to a paper core tube packaging structure and a rolling method for eliminating floor indentations. Background Art

[0002] In the production process of PVC flooring, at the last stage of production, i.e. the packaging process, the finished flooring needs to be rolled and packaged. If the product has an unacceptable appearance during the packaging process, such as surface indentations, it is unacceptable for the flooring with decorative function. However, scrapping due to indentations during the packaging process is still common in the industry.

[0003] Ordinary paper core tubes are concentric cylindrical structures. Due to the hardness characteristics of PVC flooring itself, one end of the flooring protrudes from the surface of the paper core tube under the conventional winding method. After the PVC flooring sheet is wound around the paper core tube for one week, due to the thickness of the flooring sheet itself, longitudinal indentations will inevitably be generated in the adjacent area, thereby adversely affecting the appearance of the flooring. In addition, during the winding process of the PVC flooring, the traditional method only uses a single direction of rotation to wind the sheet, and the sheets on the same roll are in close contact. However, PVC flooring has obvious thermal expansion and contraction characteristics. When the PVC flooring is wound, it is often not long after production and is still in a heated state, which can easily lead to internal extrusion deformation and indentations after the flooring is rolled and cooled.

[0004] In view of the above reasons, a paper core tube packaging structure and a rolling method that can eliminate floor indentations are needed in the prior art, which can eliminate the indentations caused by floor sheets being rolled up in paper core tubes and reduce the adverse effects of packaging on the appearance of the floor. Summary of the invention

[0005] Some simplifications or omissions may be made in this section and the abstract and title of the present application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] In view of the problem that the PVC floor in the prior art is prone to indentation when rolled and packaged by paper core tubes, the present invention is proposed.

[0007] Therefore, an object of the present invention is to provide a paper core tube packaging structure that eliminates floor indentations.

[0008] In order to solve the technical problem, the present invention provides the following technical solution: a paper core tube packaging structure for eliminating floor indentations, comprising:

[0009] A paper core tube for rolling up floor sheets, wherein the outer surface of the paper core tube is provided with an inwardly concave groove, the concave depth of the groove matches the thickness of the floor sheet, the floor sheet is rolled up around the surface of the paper core tube with the groove as the starting point, and a coaxial mounting groove is provided inside the paper core tube, wherein the groove and the mounting groove both run through the length direction of the paper core tube; and,

[0010] The winding assembly is used to drive the paper core tube to rotate, and includes a workbench and support frames arranged on both sides of the workbench. A detachable driving roller is rotatably connected to the support frame through a bearing. The paper core tube is sleeved on the surface of the driving roller through a mounting groove and rotates synchronously with the driving roller. A driving motor coaxially connected to the driving roller is provided on one side of one group of support frames, and the driving motor includes two driving modes: forward drive and reverse drive.

[0011] As a preferred solution of the paper core tube packaging structure for eliminating floor indentations of the present invention, an automatic disassembly assembly is provided between the driving roller and the support frame, and when the driving roller rotates in the reverse direction to a set speed, the driving roller and the support frame are automatically separated;

[0012] A blocking plate protruding upward is provided on one side of the workbench. When the driving roller is separated from the supporting frame, the rolled-up floor sheet falls onto the workbench and is blocked and limited by the blocking plate.

[0013] As a preferred solution of the paper core tube packaging structure for eliminating floor indentations described in the present invention, the automatic disassembly component includes a trigger part arranged on one side of the support frame and a limit plug block movably connected to the trigger part, and limit slots adapted to the limit plug block are provided at both ends of the driving roller. When the driving roller rotates in the opposite direction to a set speed, the trigger part drives the limit plug block to move out of the limit slot.

[0014] As a preferred solution of the paper core tube packaging structure for eliminating floor indentations of the present invention, the triggering part comprises a ratchet wheel 1 connected to the bearing of the support frame and a connecting column coaxially connected to the ratchet wheel, a ratchet wheel 2 is rotatably connected to the surface of the connecting column, the ratchet wheel 2 and the ratchet wheel 1 have opposite ratchet teeth, a ratchet wheel 1 is provided on one side of the ratchet wheel 2 for blocking the ratchet wheel 1 from rotating in the reverse direction, and a ratchet wheel 2 is provided on one side of the support frame for blocking the ratchet wheel 2 from rotating in the forward direction;

[0015] The trigger part also includes a rotation speed sensing component arranged on one side of the second ratchet. When the rotation speed of the second ratchet in the reverse direction exceeds the set value of the rotation speed sensing component, the trigger part drives the limiting plug to move out of the limiting slot.

[0016] As a preferred solution of the paper core tube packaging structure for eliminating floor indentations of the present invention, the ratchet 1 includes a connecting rod fixedly connected to the ratchet 2 and a blocking claw slidably connected to the connecting rod, a rotation groove is provided through the blocking claw, and the blocking claw is also rotatably connected to the connecting rod through the rotation groove, the end of the blocking claw cooperates with the ratchet teeth of the ratchet 1, and a connecting disk for limiting the blocking claw is provided on one side of the ratchet 1;

[0017] A retractable torsion spring is connected between the blocking claw and the second ratchet, and the tangential torsion force of the torsion spring drives the end of the blocking claw to turn into the ratchet teeth of the first ratchet, and the axial elastic force of the torsion spring drives the blocking claw to move toward the connecting disk;

[0018] The pawl width of the second pawl is not less than the distance between the first ratchet and the second ratchet.

[0019] As a preferred solution of the paper core tube packaging structure for eliminating floor indentations described in the present invention, wherein: the end of the limiting plug away from the limiting slot is provided with a positioning rod slidably connected to the connecting column, a return spring 1 is connected between the positioning rod and the connecting column, a positioning block is provided on one side of the positioning rod, a side of the positioning block close to the connecting column is set as a plane, and a side of the positioning block close to the limiting plug is set as a conical surface;

[0020] The speed sensing component includes a gravity block slidably connected to one side of the ratchet wheel 2, the gravity block slides radially along the ratchet wheel 2, a reset spring 2 is connected between the gravity block and the ratchet wheel 2, the side of the gravity block close to the connecting column is adapted to the conical surface of the positioning block, and the side of the gravity block close to the limiting plug is adapted to the plane of the positioning block.

[0021] As a preferred solution of the paper core tube packaging structure for eliminating floor indentations of the present invention, the driving roller is provided with a tensioning portion adapted to the mounting groove, the tensioning portion comprises a receiving groove radially penetrating the surface of the driving roller and an extrusion convex strip slidably connected to the receiving groove, the driving roller is provided with a driving member for driving the extrusion convex strip to move, and when the extrusion convex strip moves out of the receiving groove, the mounting groove is squeezed and fixed;

[0022] The receiving grooves are arranged in a plurality of groups at intervals along the axial direction of the driving roller, and the receiving grooves are arranged in a circular array around the central axis of the driving roller.

[0023] As a preferred solution of the paper core tube packaging structure for eliminating floor indentations of the present invention, the driving member comprises a driving rod slidably connected to the driving roller, one side of the driving rod is provided with connecting blocks at equal intervals, the intervals between adjacent connecting blocks are adapted to the intervals between adjacent storage grooves, the connecting blocks are connected to the extrusion convex strips through a push rod, and the connecting blocks and the extrusion convex strips are rotatably connected to the two ends of the push rod respectively;

[0024] The driving rods are symmetrically provided with two groups, and a reset spring three is connected between the two groups of driving rods. A driving plate is provided at one end of the driving rod close to the support frame, and a sliding groove adapted to the driving plate is provided in the driving roller, and the sliding groove is connected with the limiting slot. When the limiting plug is inserted into the limiting slot, the driving plate is pushed and compresses the reset spring three.

[0025] The beneficial effect of the paper core tube packaging structure for eliminating floor indentations of the present invention is as follows: the paper core tube and the winding component are arranged to cooperate with each other, first rotating forward for winding and then rotating reversely to achieve uniform gaps, which can eliminate the indentations caused by the floor sheets being wound and packaged by the paper core tube, and reduce the adverse effects of the packaging on the appearance of the floor; in addition, by arranging an automatic disassembly component, the wound floor sheets can be automatically disassembled from the equipment while maintaining the gap effect, thereby improving operating efficiency.

[0026] Based on the same inventive concept, the present invention also provides a paper core tube packaging and rolling method for eliminating floor indentations, which is applied to the above-mentioned paper core tube packaging structure for eliminating floor indentations, and includes the following steps:

[0027] Sleeve the idle paper core tube of the unwound floor sheet onto the driving roller;

[0028] Install and connect the driving roller to the bearings of the support frames on both sides in the winding direction;

[0029] Fix one end of the floor sheet in the groove by double-sided tape, and then drive the drive motor forward to rewind;

[0030] After winding is completed, the drive motor is stopped and the tail end of the floor sheet is fixed to prevent it from loosening;

[0031] The driving motor is accelerated in reverse to make the floor sheet rotate in reverse from inside to outside to achieve uniform gaps. When the reverse speed reaches the set value, the driving motor is stopped;

[0032] The driving roller is disassembled from the bearings of the supporting frames on both sides, and the driving roller is removed to obtain the rolled floor sheet.

[0033] As a preferred solution of the paper core tube packaging and winding method for eliminating floor indentations described in the present invention, the output power of the driving motor during reverse driving is greater than the output power during forward driving, and the acceleration of the driving roller during reverse rotation is 25%-30% higher than the acceleration during forward driving.

[0034] The beneficial effects of the paper core tube packaging and rolling method for eliminating floor indentations of the present invention are the same as the beneficial effects of the paper core tube packaging structure for eliminating floor indentations, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0036] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0037] Figure 2 It is a schematic diagram of the side cross-sectional structure of the paper core tube and the driving roller of the present invention when they cooperate.

[0038] Figure 3 It is a schematic diagram of the side cross-sectional structure of the paper core tube of the present invention when it rotates.

[0039] Figure 4 It is a schematic diagram of the three-dimensional structure of a part of the triggering part of the present invention.

[0040] Figure 5 It is a schematic diagram of the structure inside the trigger part of the present invention.

[0041] Figure 6 It is a structural schematic diagram of the trigger part of the present invention before the internal limiting plug-in block is inserted into the limiting slot.

[0042] Figure 7 It is a schematic diagram of the structure after the internal limiting plug block of the trigger part of the present invention is inserted into the limiting slot.

[0043] Figure 8 It is a schematic diagram of the structure inside the ratchet 1 of the present invention.

[0044] Fig. 9 It is a schematic diagram of the cross-sectional structure after the internal limiting plug block of the trigger part of the present invention is inserted into the limiting slot.

[0045] Fig.10 It is a schematic cross-sectional structure diagram of the internal limiting plug-in block of the trigger part of the present invention before being inserted into the limiting slot.

[0046] Fig.11 It is a schematic structural diagram of the internal tensioning portion of the driving roller of the present invention.

[0047] Fig.12 It is a schematic diagram of the side cross-sectional structure of the tensioning portion of the present invention.

[0048] In the figure: 100, paper core tube; 101, groove; 102, mounting groove; 200, winding assembly; 201, workbench; 201a, blocking plate; 202, support frame; 203, driving roller; 204, tensioning part; 204a, storage groove; 204b, extrusion convex strip; 204c-1, driving rod; 204c-2, connecting block; 204c-3, push rod; 204c-4, reset spring three; 204c-5, driving plate; 204c-6, slide groove; 205, driving motor; 300, automatic disassembly assembly; 301, Trigger part; 301a, ratchet one; 301b, connecting column; 301c, ratchet two; 301d, pawl one; 301d-1, connecting rod; 301d-2, blocking claw; 301d-3, rotating groove; 301d-4, connecting disk; 301d-5, torsion spring; 301e, pawl two; 301f, speed sensing part; 301f-1, gravity block; 301f-2, reset spring two; 302, limit plug; 302a, positioning rod; 302b, reset spring one; 302c, positioning block; 303, limit slot. DETAILED DESCRIPTION

[0049] In order to make the objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0050] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0051] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments. Example 1

[0052] Reference Figure 1-Figure 3 , which is the first embodiment of the present invention, provides a paper core tube packaging structure for eliminating floor indentations, which can eliminate the indentations caused by floor sheets being rolled up and packaged by paper core tubes, and includes: a rolling component 200 and a paper core tube 100 for rolling up floor sheets.

[0053] Specifically, the outer surface of the paper core tube 100 is provided with an inwardly concave groove 101, and the concave depth D1 of the groove 101 matches the thickness D2 of the floor sheet. When the floor sheet is rolled up, the groove 101 with a concave depth D1 equal to its thickness D2 is selected as the starting point, and rolled around the surface of the paper core tube 100, so that after one circle of rolling is completed, the starting end of the floor sheet is just tangent to the surface of the paper core tube, so when the second circle of rolling is performed, no longitudinal indentation will be generated due to the height difference, and the appearance quality of the floor sheet is maintained. A coaxial installation groove 102 is provided inside the paper core tube 100, which is convenient for rapid rotation assisted by a rotating roller or other equipment for rapid rolling. The groove 101 and the installation groove 102 both run through the length direction of the paper core tube 100. The groove 101 is the same length as the paper core tube 100, and can be adapted to floor sheets of more widths.

[0054] In this embodiment, multiple groups of grooves 101 are provided on the outer surface of the paper core tube 100, and the recessed depths D1 of different groups of grooves 101 are different, so as to adapt to the thickness D2 of different floor sheets. Preferably, the multiple groups of grooves 101 are distributed in a circular array, and the recessed depths D1 of adjacent groups of grooves 101 gradually increase or decrease along the winding direction, so as to facilitate the quick finding of the grooves 101 that are adapted to the recessed depth D1 according to the thickness D2 of the floor sheet.

[0055] Further, the winding assembly 200 is used to drive the paper core tube 100 to rotate, and includes a workbench 201 and a support frame 202 arranged on both sides of the workbench 201. The support frame 202 is rotatably connected with a detachable driving roller 203 through a bearing. The paper core tube 100 is sleeved on the surface of the driving roller 203 through the mounting groove 102 and rotates synchronously with the driving roller 203. One side of one group of the support frames 202 is provided with a driving motor 205 coaxially connected to the driving roller 203, and the driving motor 205 includes two driving modes: forward drive and reverse drive. By setting the driving roller 203 to pass through the mounting groove 102, when the driving roller 203 rotates, the friction force with the inner wall of the mounting groove 102 drives the paper core tube 100 to rotate, so as to be rolled. The driving roller 203 is detachably connected to the support frame 202, which is convenient for installing the idle paper core tube 100, and can be disassembled and removed after the paper core tube 100 is rolled.

[0056] Among them, the paper core tube packaging and rolling method for eliminating floor indentations includes the following steps:

[0057] The idle paper core tube 100 of the unwound floor sheet is sleeved on the driving roller 203, so that the driving roller 203 can drive the paper core tube 100 to rotate after rotating, and then the driving roller 203 is connected to the bearings of the support frames 202 on both sides according to the winding direction, and then one end of the floor sheet is fixed in the groove 101 by double-sided tape to prevent the starting end of the floor sheet from slipping due to force during subsequent packaging and transportation, thereby preventing a gap from being generated between the starting end of the floor sheet and the end of the groove 101, or exceeding the groove 101, thereby generating an indentation again, and then the driving motor 205 is driven forward to rewind; after the rewinding is completed, the driving motor 205 is stopped, and the tail end of the floor sheet is fixed to prevent it from loosening, and the fixing method can be a wrapping method such as tape, Velcro, and binding.

[0058] Next, the driving motor 205 is driven in reverse and accelerated, so that the floor sheet rotates in reverse from the inside to the outside to achieve uniform gaps. In this way, when the floor sheet shrinks again due to thermal expansion and contraction, there is enough gap space for contraction, and it will not squeeze each other to produce indentations. When the reverse rotation speed reaches the set value, the driving motor 205 is stopped. Since the reverse acceleration of the driving motor 205 is determined, the number of rotations when it reaches the set rotation speed is determined. Therefore, it can also be stopped after the number of rotations reaches the set value by presetting the number of rotations. After the paper core tube 100 with the floor sheet rolled up stops, the driving roller 203 is disassembled from the bearings of the support frames 202 on both sides, and the driving roller 203 is removed to obtain the rolled floor sheet.

[0059] Preferably, the output power of the driving motor 205 during reverse driving is greater than the output power during forward driving, and the acceleration of the driving roller 203 during reverse rotation is 25%-30% higher than the acceleration during forward driving. During the reversal of the paper core tube 100, the floor sheet is gradually driven to reverse from the end close to the groove 101 outward, so during the initial acceleration process, the outermost layer of the floor sheet maintains the original static state under the action of inertia, while the innermost layer of the floor sheet has a reversal trend first, and then gradually increases the gap between adjacent layers from the inside to the outside to offset the indentation caused by the contraction of the sheet after cooling. When the acceleration of the reverse rotation is set to be higher than the acceleration during forward driving, the gap generated by the reversal can be increased by comparing the difference in rotation acceleration before and after winding. During actual operation, it is found that when the acceleration of the reverse rotation is 25%-30% higher than the acceleration during forward driving, the gap uniformity is better, and the voltage power increase of the driving motor 205 is relatively limited, which is more energy-saving. Example 2

[0060] Reference Figure 2-Figure 10, which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides an automatic disassembly assembly 300. After the reverse acceleration of the driving roller 203 is completed, if the driving motor 205 is directly stopped, the driving roller 203 loses power and slows down, but it will still be affected by the friction resistance of the rotating shaft of the driving motor 205, thereby generating a certain negative acceleration, that is, the driving roller 203 makes the inner layer of the rolled floor sheet slow down faster due to the rotation resistance, and finally the outer layer still has a certain rotation tendency after the inner layer stops rotating, thereby tightening the gap between the layers of floor sheets to a certain extent, reducing the gap, and affecting the subsequent buffering indentation space for dealing with thermal expansion and contraction, impact deformation, etc. The same is true for directly "braking and slowing down" the driving roller 203, so the best method is to slow down by providing resistance to the outer layer of the floor sheet.

[0061] In this embodiment, after the reversal reaches the set value, the driving roller 203 is directly separated from the support frame 202, the power source is cut off and the floor sheet falls to the workbench 201. Since the fully rolled floor sheet is close to the workbench 201, the impact of the falling impact on the floor sheet can be ignored. The outermost layer of the floor sheet falling to the workbench 201 will be slowed down by the resistance of the workbench 201, and the inner layer of the floor sheet will also stop rotating with the speed reduction. Not only will the buffer gap not be reduced due to stopping from the inside to the outside, but the buffer gap value will be increased due to stopping from the outside to the inside, and the disassembly between the equipment is completed at the same time, improving the packaging efficiency.

[0062] Specifically, an automatic disassembly assembly 300 is provided between the driving roller 203 and the support frame 202. When the driving roller 203 rotates in the opposite direction to a set speed, the driving roller 203 and the support frame 202 are automatically separated. A blocking plate 201a protruding upward is provided on one side of the workbench 201. When the driving roller 203 and the support frame 202 are separated, the rolled floor sheet falls onto the workbench 201 and is blocked and limited by the blocking plate 201a. The blocking plate 201a is protruding upward, which can block the rolled floor sheet falling onto the workbench 201, prevent it from rolling beyond the range of the workbench 201, and improve the blocking effect, so that it can be decelerated and stopped as soon as possible.

[0063] Furthermore, the automatic disassembly assembly 300 includes a triggering part 301 disposed on one side of the support frame 202 and a limit plug 302 movably connected to the triggering part 301. The two ends of the driving roller 203 are provided with limit slots 303 adapted to the limit plug 302. When the driving roller 203 rotates in the reverse direction to a set speed, the triggering part 301 drives the limit plug 302 to move out of the limit slot 303. The triggering part 301 automatically triggers the separation between the driving roller 203 and the support frame 202 when the reverse speed or the number of rotations reaches a set value. When implemented, the disassembly can be completed by electronic drive after reaching the set value.

[0064] In this embodiment, the triggering part 301 includes a ratchet wheel 1 301a connected to the bearing of the support frame 202 and a connecting column 301b coaxially connected to the ratchet wheel 1 301a, wherein a group of ratchet wheels 1 301a of the support frame 202 are connected to the output shaft of the driving motor 205, and a ratchet wheel 2 301c is rotatably connected to the surface of the connecting column 301b, and the ratchet teeth of the ratchet wheel 2 301c are opposite to those of the ratchet wheel 1 301a, and a ratchet pawl 1 301d is provided on one side of the ratchet wheel 2 301c to block the reverse rotation of the ratchet wheel 1 301a, and a ratchet pawl 2 301e is provided on one side of the support frame 202 to block the forward rotation of the ratchet wheel 2 301c. When rotating forward, only the ratchet wheel 1 301a rotates, and the ratchet wheel 2 301c is blocked and fixed by the ratchet pawl 2 301e at this time; when rotating reversely, the ratchet wheel 1 301a rotates and drives the ratchet wheel 2 301c to rotate, so the rotation data of the reverse rotation can be accurately obtained according to the rotation data of the ratchet wheel 2 301c.

[0065] Preferably, the triggering part 301 further comprises a speed sensing part 301f arranged at one side of the second ratchet wheel 301c. When the speed of the second ratchet wheel 301c rotating in the reverse direction exceeds the set value of the speed sensing part 301f, the triggering part 301 drives the limiting plug 302 to move out of the limiting slot 303. The first ratchet 301d comprises a connecting rod 301d-1 fixedly connected to the second ratchet wheel 301c and a blocking claw 301d-2 slidably connected to the connecting rod 301d-1. A rotating groove 301d-3 is formed through the blocking claw 301d-2. The blocking claw 301d-2 is also rotatably connected to the connecting rod 301d-1 through the rotating groove 301d-3. The end of the blocking claw 301d-2 cooperates with the ratchet teeth of the first ratchet wheel 301a. A connecting disk 301d-4 is provided at one side of the first ratchet wheel 301a to limit the blocking claw 301d-2.

[0066] A retractable torsion spring 301d-5 is connected between the blocking claw 301d-2 and the ratchet wheel 301c. The tangential torsion force of the torsion spring 301d-5 drives the end of the blocking claw 301d-2 to turn into the ratchet teeth of the ratchet wheel 1 301a, and the axial elastic force of the torsion spring 301d-5 drives the blocking claw 301d-2 to move toward the connecting disk 301d-4; the claw width of the ratchet wheel 301e is not less than the distance between the ratchet wheel 1 301a and the ratchet wheel 2 301c, so that when the driving roller 203 is installed, the ratchet wheel 2 301c is pushed, and the ratchet wheel 2 301e always keeps blocking the ratchet teeth of the ratchet wheel 2 301c.

[0067] The end of the limiting plug 302 away from the limiting slot 303 is provided with a positioning rod 302a slidably connected to the connecting column 301b, and a return spring 302b is connected between the positioning rod 302a and the connecting column 301b. In this embodiment, multiple groups of torsion springs 301d-5 are provided, so that the elastic force of the torsion spring 301d-5 is greater than the elastic force of the return spring 302b, thereby ensuring that the plane of the positioning block 302c can be pushed after the gravity block 301f-1 is reset. There is a positioning block 302c, and the side of the positioning block 302c close to the connecting column 301b is set as a plane, and the side of the positioning block 302c close to the limiting plug 302 is set as a conical surface; the positioning rod 302a, the positioning block 302c and the limiting plug 302 are an integrated structure, and when the conical surface of the positioning block 302c squeezes the gravity block 301f-1, a component force will be generated to push the gravity block 301f-1, while when the flat surface of the positioning block 302c squeezes the gravity block 301f-1, it cannot push it.

[0068] The speed sensing member 301f includes a weight block 301f-1 slidably connected to one side of the second ratchet wheel 301c, the weight block 301f-1 slides radially along the second ratchet wheel 301c, a second reset spring 301f-2 is connected between the weight block 301f-1 and the second ratchet wheel 301c, the side of the weight block 301f-1 close to the connecting column 301b is adapted to the conical surface of the positioning block 302c, and the side of the weight block 301f-1 close to the limiting plug 302 is adapted to the plane of the positioning block 302c. The maximum diameter of the positioning block 302c is greater than the diameter of the connecting column 301b, so that the weight block 301f-1 can push the plane of the positioning block 302c after being reset.

[0069] The rest of the structure is the same as that of Example 1.

[0070] The installation process of the driving roller 203: First, install the driving roller 203 equipped with the paper core tube 100 between the support frames 202 on both sides, and after fixing the end of the floor sheet to the groove 101 of the paper core tube 100 by double-sided tape, align the limiting slot 303 at the end of the driving roller 203 with the limiting plug 302 on the same side, and then push the ratchet 301c on this side. The movement of the ratchet 301c will drive the connecting rod 301d-1 to move. Since the blocking claw 301d-2 is blocked by the connecting disk 301d-4, the movement of the connecting rod 301d-1 will stretch the torsion spring 301d-5 to accumulate elastic force; at the same time, the sliding movement of the ratchet 301c relative to the connecting column 301b will drive the weight block 301f-1 to move. The movement of the weight block 301f-1 will squeeze the conical surface of the positioning block 302c and generate a component force, so that the weight block 301f-1 The compressed return spring 2 301f-2 slides radially along the ratchet 2 301c until the gravity block 301f-1 moves through the positioning block 302c, then the return spring 2 301f-2 recovers its deformation and drives the gravity block 301f-1 to reset, and then under the elastic force of the torsion spring 301d-5, the ratchet 2 301c moves in the opposite direction to reset, and pushes the plane of the positioning block 302c through the gravity block 301f-1, so that the positioning rod 302a slides relative to the connecting column 301b and compresses the return spring 1 302b, and the movement of the positioning block 302c and the positioning rod 302a will cause the limit plug 302 to move outward and insert into the limit slot 303, and the plane cooperation of the gravity block 301f-1 and the positioning block 302c can prevent the positioning block 302c and the positioning rod 302a from moving in the opposite direction, thereby keeping the limit plug 302 inserted in the limit slot 303.

[0071] Forward rotation process: after the limiting plugs 302 on both sides are respectively inserted into the limiting slots 303 to complete the installation of the driving roller 203, the driving motor 205 is driven in the forward direction, and the driving motor 205 drives the ratchet 1 301a to rotate. When the ratchet 1 301a rotates forward, its ratchet teeth will squeeze the blocking claw 301d-2 of the pawl 1 301d, so that the blocking claw 301d-2 rotates relative to the connecting rod 301d-1 through the rotating groove 301d-3, and drive the torsion spring 301d-5 to rotate and accumulate torsional force, so that the blocking claw 301d-2 is reset when it loses the blockage; and when the ratchet 1 301a rotates, the force applied to the pawl 1 301d will be transmitted to the ratchet 2 301c, and the ratchet 2 301c is blocked by the pawl 2 301e in the rotation direction, so that the ratchet 2 301c will not be driven to rotate during forward rotation. The rotation of the ratchet wheel 1 301a drives the driving roller 203 to rotate through the connecting column 301b, the positioning rod 302a, the positioning block 302c, the limiting plug block 302, and the limiting slot 303, thereby performing positive rotation and winding. After the floor sheet is wound, the driving motor 205 is turned off, and the outermost end of the floor sheet is fixed by adhesive tape.

[0072] Reverse rotation and disassembly process: The driving motor 205 is driven in reverse, and the driving motor 205 drives the ratchet wheel 1 301a to rotate. When the ratchet wheel 1 301a rotates in reverse, its ratchet teeth will be restricted by the blocking claw 301d-2 of the ratchet 1 301d, thereby driving the ratchet wheel 2 301c to rotate through the ratchet 1 301d, and the reverse rotation trend of the ratchet wheel 2 301c will not be blocked by the ratchet 2 301e. During the process of the ratchet wheel 1 301a and the ratchet wheel 2 301c rotating in reverse together, the driving roller 203 also rotates in reverse to drive the paper core tube 100 to rotate in reverse. The reverse rotation of the ratchet wheel 301c causes the gravity block 301f-1 to move radially outward under the action of centrifugal force, thereby compressing the reset spring 301f-2. When the ratchet wheel 301c rotates in the reverse direction to the set speed, the gravity block 301f-1 moves radially to a set distance, so that the gravity block 301f-1 moves away from the rotation center and no longer blocks the plane of the positioning block 302c. Then the positioning block 302c loses its obstruction, and the reset spring 302b recovers its deformation, thereby driving the integrated positioning rods 302a, The positioning block 302c and the limiting plug 302 move, so that the limiting plug 302 moves out of the limiting slot 303, and then the driving roller 203 falls downward to the surface of the workbench 201 under the action of gravity after losing the support of the limiting plug 302. The outermost layer of the floor sheet that falls to the surface of the workbench 201 will be decelerated until it stops due to the resistance of the surface of the workbench 201. Finally, the driving roller 203 inserted in the installation groove 102 is taken out to obtain the floor sheet rolled up on the paper core tube 100. Example 3

[0073] Reference Figure 9-12 , which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides a tensioning portion 204 arranged in the driving roller 203, which facilitates the rapid installation and separation between the driving roller 203 and the paper core tube 100.

[0074] Specifically, the driving roller 203 is provided with a tensioning portion 204 adapted to the mounting groove 102, the tensioning portion 204 includes a receiving groove 204a radially penetrating the surface of the driving roller 203 and a squeezing convex strip 204b slidably connected to the receiving groove 204a, and the driving roller 203 is provided with a driving member for driving the squeezing convex strip 204b to move, and when the squeezing convex strip 204b moves out of the receiving groove 204a, the mounting groove 102 is squeezed and fixed. The tensioning portion 204 can be divided into two states: tensioning and receiving. Generally, the diameter of the mounting groove 102 of the paper core tube 100 is slightly larger than the diameter of the driving roller 203 when the tensioning portion 204 receives it. When the tensioning part 204 of the driving roller 203 is stored, the paper core tube 100 can be conveniently nested in the surface of the driving roller 203 through the mounting groove 102, and then the driving roller 203 is adjusted to a tensioned state, that is, the extruded convex strip 204b is moved out of the storage groove 204a to squeeze the inner wall of the mounting groove 102, thereby increasing the friction between the two, so that the rotation of the driving roller 203 will drive the paper core tube 100 to rotate synchronously.

[0075] Furthermore, there are multiple groups of receiving grooves 204a spaced apart along the axial direction of the driving roller 203, and the receiving grooves 204a are arranged in a circular array around the central axis of the driving roller 203. The spaced and circularly arranged receiving grooves 204a and the extrusion ridges 204b can make the extrusion force on the inner wall of the mounting groove 102 of the paper core tube 100 evenly distributed.

[0076] The driving member includes a driving rod 204c-1 slidably connected to the driving roller 203, and a connecting block 204c-2 is evenly spaced on one side of the driving rod 204c-1. The interval between adjacent connecting blocks 204c-2 matches the interval between adjacent receiving grooves 204a. The connecting block 204c-2 is connected to the extrusion convex strip 204b through a push rod 204c-3. The connecting block 204c-2 and the extrusion convex strip 204b are rotatably connected to the two ends of the push rod 204c-3. The push rod 204c-3 is pushed by moving the driving rod 204c-1, and the push of the push rod 204c-3 drives the extrusion convex strip 204b to move along the receiving groove 204a, thereby adjusting the tension or receiving state.

[0077] Preferably, two groups of driving rods 204c-1 are symmetrically provided, and a reset spring three 204c-4 is connected between the two groups of driving rods 204c-1. A driving plate 204c-5 is provided at one end of the driving rod 204c-1 close to the support frame 202. A sliding groove 204c-6 adapted to the driving plate 204c-5 is provided in the driving roller 203, and the sliding groove 204c-6 is connected to the limiting slot 303. When the limiting plug 302 is inserted into the limiting slot 303, the driving plate 204c-5 is pushed and compresses the reset spring three 204c-4.

[0078] The rest of the structure is the same as that of Example 2.

[0079] Working principle: After the limit plug 302 is inserted into the limit slot 303, it will push the driving plate 204c-5. During the movement of the driving plate 204c-5 along the slide groove 204c-6, it will drive the driving rod 204c-1 to move. The movement of the driving rod 204c-1 will drive the connecting block 204c-2 to move. The movement of the connecting block 204c-2 will push the extrusion ridge 204b to move out of the storage groove 204a through the push rod 204c-3. The extrusion ridge 204b moving out of the storage groove 204a will squeeze the inner wall of the installation groove 102 of the paper core tube 100, increase the friction resistance, and then when the driving roller 203 rotates, the friction force can drive the paper core tube 100 to rotate synchronously. When the above-mentioned driving rod 204c-1 moves, it will also push the reset spring three 204c-4. When the limit slots 303 at both ends are inserted into the limit blocks 302, the driving rods 204c-1 at both ends move toward each other, thereby compressing the reset spring three 204c-4. Until the limit blocks 302 at both ends, the driving rods 204c-1 at both ends will be reset under the elastic force of the reset spring three 204c-4.

[0080] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A paper core tube packaging structure that eliminates floor indentations. Features: include, A paper core tube (100) for rolling up floor sheets, wherein the outer surface of the paper core tube (100) is provided with an inwardly recessed groove (101), the recessed depth D1 of the groove (101) matches the thickness D2 of the floor sheet, the floor sheet is rolled up around the surface of the paper core tube (100) with the groove (101) as the starting point, a coaxial mounting groove (102) is provided inside the paper core tube (100), the groove (101) and the mounting groove (102) both run through the length direction of the paper core tube (100); and, A winding assembly (200), the winding assembly (200) being used to drive the paper core tube (100) to rotate, comprising a workbench (201) and support frames (202) arranged on both sides of the workbench (201), the support frames (202) being rotatably connected to a detachable driving roller (203) via a bearing, the paper core tube (100) being sleeved on the surface of the driving roller (203) via a mounting groove (102) and rotating synchronously with the driving roller (203), one side of one set of the support frames (202) being provided with a driving motor (205) coaxially connected to the driving roller (203), the driving motor (205) including two driving modes: forward driving and reverse driving; An automatic disassembly component (300) is provided between the driving roller (203) and the support frame (202); when the driving roller (203) rotates in the opposite direction to a set rotation speed, the driving roller (203) and the support frame (202) are automatically separated; An upwardly protruding blocking plate (201a) is provided on one side of the workbench (201); when the driving roller (203) and the support frame (202) are separated, the rolled-up floor sheet falls onto the workbench (201) and is blocked and limited by the blocking plate (201a); The automatic disassembly component (300) comprises a trigger portion (301) disposed on one side of the support frame (202) and a limit plug block (302) movably connected to the trigger portion (301); limit slots (303) adapted to the limit plug block (302) are disposed at both ends of the driving roller (203); when the driving roller (203) rotates in the reverse direction to a set rotation speed, the trigger portion (301) drives the limit plug block (302) to move out of the limit slot (303); The triggering part (301) comprises a ratchet wheel 1 (301a) connected to a bearing of the support frame (202) and a connecting column (301b) coaxially connected to the ratchet wheel 1 (301a); a ratchet wheel 2 (301c) is rotatably connected to the surface of the connecting column (301b); the ratchet teeth of the ratchet wheel 2 (301c) are in opposite directions to those of the ratchet wheel 1 (301a); a ratchet pawl 1 (301d) is provided on one side of the ratchet wheel 2 (301c) for blocking the ratchet wheel 1 (301a) from rotating in the reverse direction; and a ratchet pawl 2 (301e) is provided on one side of the support frame (202) for blocking the ratchet wheel 2 (301c) from rotating in the forward direction. The trigger part (301) further comprises a rotation speed sensing component (301f) arranged on one side of the second ratchet wheel (301c); when the rotation speed of the second ratchet wheel (301c) in the reverse direction exceeds the set value of the rotation speed sensing component (301f), the trigger part (301) drives the limiting plug (302) to move out of the limiting slot (303).

2. The paper core tube packaging structure for eliminating floor indentations as claimed in claim 1, Features: The ratchet 1 (301d) comprises a connecting rod (301d-1) fixedly connected to the ratchet 2 (301c) and a blocking pawl (301d-2) slidably connected to the connecting rod (301d-1); a rotation groove (301d-3) is provided through the blocking pawl (301d-2); the blocking pawl (301d-2) is also rotationally connected to the connecting rod (301d-1) via the rotation groove (301d-3); an end of the blocking pawl (301d-2 cooperates with the ratchet teeth of the ratchet 1 (301a); and a connecting disk (301d-4) for limiting the blocking pawl (301d-2) is provided on one side of the ratchet 1 (301a); A retractable torsion spring (301d-5) is connected between the blocking claw (301d-2) and the second ratchet wheel (301c); the tangential torsion force of the torsion spring (301d-5) drives the end of the blocking claw (301d-2) to turn into the ratchet teeth of the first ratchet wheel (301a); and the axial elastic force of the torsion spring (301d-5) drives the blocking claw (301d-2) to move toward the connecting disk (301d-4); The width of the pawl of the second ratchet (301e) is not less than the distance between the first ratchet (301a) and the second ratchet (301c).

3. The paper core tube packaging structure for eliminating floor indentations as claimed in claim 2, Features: A positioning rod (302a) slidably connected to the connecting column (301b) is provided at one end of the limiting plug (302) away from the limiting slot (303); a return spring (302b) is connected between the positioning rod (302a) and the connecting column (301b); a positioning block (302c) is provided on one side of the positioning rod (302a); a side of the positioning block (302c) close to the connecting column (301b) is set as a plane; and a side of the positioning block (302c) close to the limiting plug (302) is set as a conical surface; The rotation speed sensing component (301f) comprises a weight block (301f-1) slidably connected to one side of the second ratchet wheel (301c); the weight block (301f-1) slides radially along the second ratchet wheel (301c); a second return spring (301f-2) is connected between the weight block (301f-1) and the second ratchet wheel (301c); a side of the weight block (301f-1) close to the connecting column (301b) is matched with a conical surface of the positioning block (302c); and a side of the weight block (301f-1) close to the limiting plug block (302) is matched with a plane of the positioning block (302c).

4. The paper core tube packaging structure for eliminating floor indentations as claimed in claim 3, Features: A tensioning portion (204) adapted to the mounting groove (102) is provided in the driving roller (203), the tensioning portion (204) comprising a receiving groove (204a) radially penetrating the surface of the driving roller (203) and an extrusion convex strip (204b) slidably connected to the receiving groove (204a), a driving member for driving the extrusion convex strip (204b) to move is provided in the driving roller (203), and when the extrusion convex strip (204b) moves out of the receiving groove (204a), the mounting groove (102) is squeezed and fixed; The receiving grooves (204a) are distributed in multiple groups at intervals along the axial direction of the driving roller (203), and the receiving grooves (204a) are distributed in a ring array around the central axis of the driving roller (203).

5. The paper core tube packaging structure for eliminating floor indentations as claimed in claim 4, Features: The driving member comprises a driving rod (204c-1) slidably connected in the driving roller (203); connecting blocks (204c-2) are provided at equal intervals on one side of the driving rod (204c-1); the interval between adjacent connecting blocks (204c-2) matches the interval between adjacent storage grooves (204a); the connecting blocks (204c-2) and the extrusion convex strips (204b) are connected via a push rod (204c-3); the connecting blocks (204c-2) and the extrusion convex strips (204b) are rotatably connected to two ends of the push rod (204c-3) respectively; The driving rod (204c-1) is symmetrically provided with two groups, and a return spring three (204c-4) is connected between the two groups of driving rods (204c-1); a driving plate (204c-5) is provided at one end of the driving rod (204c-1) close to the support frame (202); a slide groove (204c-6) adapted to the driving plate (204c-5) is provided in the driving roller (203); the slide groove (204c-6) is connected to the limit slot (303); when the limit plug (302) is inserted into the limit slot (303), the driving plate (204c-5) is pushed and compresses the return spring three (204c-4).

6. A paper core tube packaging and rolling method for eliminating floor indentations, applied to the paper core tube packaging structure for eliminating floor indentations as claimed in claim 1, Features: The steps include: Sleeving the idle paper core tube (100) of the unwound floor sheet onto the driving roller (203); The driving roller (203) is installed and connected to the bearings of the support frames (202) on both sides in the winding direction; Fixing one end of the floor sheet in the groove (101) by means of double-sided adhesive, and then driving the drive motor (205) in a forward direction to reel it up; After the winding is completed, the driving motor (205) is stopped, and the tail end of the floor sheet is fixed to prevent it from loosening; The driving motor (205) is driven in reverse and accelerated to rotate the floor sheet in reverse from the inside to the outside to achieve uniform gaps, and the driving motor (205) is stopped when the reverse rotation speed reaches a set value; The driving roller (203) is disassembled from the bearings of the support frames (202) on both sides, and the driving roller (203) is removed to obtain the rolled floor sheet.

7. The paper core tube packaging and rolling method for eliminating floor indentations as claimed in claim 6, Features: The output power of the driving motor (205) during reverse driving is greater than the output power during forward driving, and the acceleration of the driving roller (203) during reverse rotation is 25%-30% higher than the acceleration during forward driving.

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