High-hardness packaging paper tube

Abstract

The utility model discloses a high hardness packing paper tube relates to packing paper tube technical field, including the paper tube body, the one end of paper tube body is provided with the abutting plate, the center thread of abutting plate is connected with the adjusting rod, and the adjusting rod extends into the inner cavity of paper tube body, the outer wall of adjusting rod is fixedly equipped with the sleeve, the sleeve is fixed on the outer wall of adjusting rod. And a fixing block is integrally formed and connected to the outer wall of the sleeve. According to the paper tube, the whole adjusting rod is made to move outwards from the inner cavity of the paper tube body by rotating the adjusting rod, the sleeve is driven to move synchronously, at the moment, the sliding block can only slide in the radial direction of the abutting plate, and the T-shaped block expands outwards till abutting against the inner wall of the paper tube body under the connecting effect of the multiple connecting rods; pressure and friction force are applied to the paper tube body to ensure that the T-shaped block is clamped in the inner cavity of the paper tube body, rotation of the adjusting rod can be stopped, the inner wall of the paper tube body is supported, the overall hardness of the paper tube body is enhanced, and the paper tube supporting device can adapt to paper tube bodies with different inner diameter specifications.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging paper tubes, and particularly relates to a high-hardness packaging paper tube. Background Art

[0002] A paper tube, sometimes also called a cardboard tube, is a cylindrical tube made of materials such as wood pulp-based cardboard, kraft paper, and fiberboard. The paper tube is composed of layers of paper or cardboard sheets wound together to form a solid hollow and usually cylindrical shape. An adhesive is used to laminate or bond the paper layers together, and the wall thickness of the tube can vary according to the number of layers wound during the manufacturing process.

[0003] In order to increase the bearing capacity of the existing industrial packaging paper tubes, additional reinforcement structures are usually arranged in the inner cavity of the paper tubes. The reinforcement structures are usually installed on the inner wall of the paper tubes. When the paper tubes are damaged after long-term use, the reinforcement structures can be taken out and used on new paper tubes. For example, a high-hardness industrial packaging paper tube disclosed in CN217732315U can drive a support ring to move out from the inside of the paper tube through a connecting rod, so that the paper tube and the reinforcement structure are separated from each other, and the removed reinforcement structure can be reused to avoid waste.

[0004] However, in the actual use process of the above patent, after the reinforcement structure inside the old paper tube is taken out, it can only be used for new paper tubes with the same inner diameter, and the applicability is poor. Summary of the Utility Model

[0005] In view of the problems existing in the above-mentioned prior art, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide a high-hardness packaging paper tube, which solves the problem that the support structure can be adjusted according to the inner diameter of the paper tube without the need to prepare multiple support structures with different diameters.

[0007] In order to achieve the above purpose, the present utility model provides the following technical solutions:

[0008] A high-hardness packaging paper tube includes a paper tube body. One end of the paper tube body is provided with a bottom plate. A regulating rod is threadedly connected to the center of the bottom plate and extends into the inner cavity of the paper tube body. A sleeve is fixedly installed on the outer wall of the regulating rod. A fixing block is integrally formed on the outer wall of the sleeve, and the fixing block is arranged in a ring shape with three groups. A T-shaped block for supporting the inner side of the paper tube body is arranged on the top of the fixing block. A plurality of connecting rods are rotatably connected between the fixing block and the T-shaped block, and the connecting rods are symmetrically arranged on both sides of the fixing block. A rectangular hole is penetrated through the wall of the bottom plate, and the number of the rectangular holes is the same as that of the T-shaped blocks. A slider is connected to the outer wall of the T-shaped block, and the slider is slidably connected in the rectangular hole.

[0009] Preferably, a rotating disc is fixedly installed at one end of the adjusting rod away from the paper tube body, and a rotating handle is fixedly connected to the outer wall of the rotating disc.

[0010] Preferably, the length of the T-shaped block is equal to or greater than the axial length of the paper tube body.

[0011] Preferably, the paper tube body includes an outer paper tube and an inner paper tube adhesively bonded to the inside of the outer paper tube, and a pressure-resistant mechanism is arranged between the outer paper tube and the inner paper tube.

[0012] Preferably, the pressure-resistant mechanism includes a plurality of elastic sheets arranged in a ring between the outer paper tube and the inner paper tube, and the elastic sheets are integrally arched, and both ends of the bottom of the elastic sheet are connected to the outer wall of the inner paper tube.

[0013] Furthermore, reinforcing ribs are arranged between the inner paper tube and the elastic sheets, and the tops of the reinforcing ribs are connected to the outer walls of the elastic sheets. Insertion holes are formed in the wall body of the inner paper tube, and the number of the insertion holes is the same as that of the reinforcing ribs.

[0014] Preferably, a pressure-reducing material is filled in the gap between the outer paper tube and the inner paper tube, and the pressure-reducing material is foam glue.

[0015] In the above technical solution, the technical effects and advantages provided by the present invention are as follows:

[0016] 1. In the present invention, the outer wall of the pressing plate is abutted against the outer wall of the paper tube body, and the adjusting rod is rotated so that the whole adjusting rod moves outward from the inner cavity of the paper tube body and drives the sleeve to move synchronously. At this time, the slider can only slide along the radial direction of the pressing plate. Under the connection action of multiple connecting rods, the T-shaped block expands outward until it abuts against the inner wall of the paper tube body, and applies pressure and friction force to the paper tube body to ensure that the T-shaped block is stuck in the inner cavity of the paper tube body. Then the rotation of the adjusting rod can be stopped to complete the support of the inner wall of the paper tube body, realizing the enhancement of the overall hardness of the paper tube body, and it can also adapt to paper tube bodies with different inner diameter specifications, and the applicability of the detachable reinforcement structure is significantly improved.

[0017] 2. In the present invention, by filling a pressure-reducing material between two adjacent elastic sheets, when the outer paper tube is subjected to external pressure, the external force generated when the elastic sheet deforms can be further reduced. At the same time, the reinforcing ribs all move towards the axis of the inner paper tube, so that the reinforcing ribs are inserted into the insertion holes, and continuous pressure is applied to the wall body of the inner paper tube. Cooperating with the pressure applied to the inner wall of the inner paper tube by the outward expansion of the T-shaped block, two opposite acting forces are formed, improving the stability of the packaging paper tube when subjected to external forces, that is, enhancing the hardness of the packaging paper tube. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments described in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 Cross-sectional plan view of the present utility model excluding the rotating disk;

[0021] Figure 3 Schematic diagram of the structure of the sleeve of the present utility model;

[0022] Figure 4 For the present utility model Figure 2 Enlarged schematic view of part A.

[0023] Explanation of reference numerals:

[0024] 1. Paper tube body; 101. Outer paper tube; 102. Inner paper tube; 2. Baffle plate; 3. Adjusting rod; 4. Sleeve; 5. Fixed block; 6. T-shaped block; 7. Connecting rod; 8. Rectangular hole; 9. Slide block; 10. Rotating disk; 11. Compression resistance mechanism; 1101. Elastic sheet; 1102. Reinforcing rib; 1103. Insertion hole; 1104. Decompression material. Detailed implementation manners

[0025] To enable those skilled in the art to better understand the technical solutions of the present utility model, the following will further introduce the present utility model in detail in conjunction with the drawings.

[0026] An embodiment of the present utility model discloses a high-hardness packaging paper tube.

[0027] The present utility model provides a high-hardness packaging paper tube as shown in Figures 1-4 Figure, which includes a paper tube body 1. One end of the paper tube body 1 is provided with a baffle plate 2. The center of the baffle plate 2 is threadedly connected with an adjusting rod 3, and the adjusting rod 3 extends into the inner cavity of the paper tube body 1. A sleeve 4 is fixedly installed on the outer wall of the adjusting rod 3. Three groups of fixed blocks 5 are integrally formed and connected to the outer wall of the sleeve 4, and the fixed blocks 5 are arranged in a ring shape. A T-shaped block 6 for supporting the inner side of the paper tube body 1 is provided on the top of the fixed block 5. Multiple connecting rods 7 are rotatably connected between the fixed block 5 and the T-shaped block 6, and the connecting rods 7 are symmetrically arranged on both sides of the fixed block 5. A rectangular hole 8 is penetrated through the wall body of the baffle plate 2, and the number of the rectangular holes 8 is the same as that of the T-shaped blocks 6. A slide block 9 is connected to the outer wall of the T-shaped block 6, and the slide block 9 is slidably connected in the rectangular hole 8; the length of the T-shaped block 6 is equal to or greater than the axial length of the paper tube body 1.

[0028] Specifically, the outer wall of the bottom plate 2 is abutted against the outer wall of the paper tube body 1. The adjusting rod 3 is rotated so that the whole adjusting rod 3 moves outward from the inner cavity of the paper tube body 1, and drives the sleeve 4 to move synchronously. At this time, the slider 9 can only slide along the radial direction of the bottom plate 2. Under the connection action of multiple connecting rods 7, the T-shaped block 6 expands outward until it abuts against the inner wall of the paper tube body 1, applying pressure and frictional force to the paper tube body 1 to ensure that the T-shaped block 6 is stuck in the inner cavity of the paper tube body 1. Then the rotation of the adjusting rod 3 can be stopped to complete the support of the inner wall of the paper tube body 1, realizing the enhancement of the overall hardness of the paper tube body 1, and it can also adapt to paper tube bodies 1 with different inner diameter specifications, and the applicability of the detachable reinforcement structure is significantly improved.

[0029] As Figure 1 shown, a rotating disk 10 is fixedly installed at one end of the adjusting rod 3 away from the paper tube body 1, and a rotating handle is fixedly connected to the outer wall of the rotating disk 10.

[0030] Specifically, when it is necessary to rotate the adjusting rod 3, the rotating disk 10 is rotated by screwing the rotating handle around the axis of the adjusting rod 3, which is convenient to operate.

[0031] In order to improve the practicability of this paper tube, as Figures 2-4 shown, the paper tube body 1 includes an outer paper tube 101 and an inner paper tube 102 bonded to the inner side of the outer paper tube 101, and a compressive mechanism 11 is arranged between the outer paper tube 101 and the inner paper tube 102; the compressive mechanism 11 includes a plurality of elastic sheets 1101 arranged in a ring between the outer paper tube 101 and the inner paper tube 102, and the elastic sheets 1101 are integrally arched, and both ends of the bottom of the elastic sheets 1101 are connected to the outer wall of the inner paper tube 102.

[0032] Specifically, when an external force is applied to the outer paper tube 101 to cause it to deform, the top of the elastic sheet 1101 itself first offsets a part of the external force, and the remaining external force is transmitted downward. The arched structures of the plurality of elastic sheets 1101 abut against each other, greatly enhancing the compressive and anti-deformation capabilities of the present utility model.

[0033] As Figure 4 shown, a reinforcing rib 1102 is arranged between the inner paper tube 102 and the elastic sheet 1101, and the top end of the reinforcing rib 1102 is connected to the outer wall of the elastic sheet 1101. A jack 1103 is opened on the wall body of the inner paper tube 102, and the number of the jacks 1103 is the same as that of the reinforcing ribs 1102; a pressure-reducing material 1104 is filled in the gap between the outer paper tube 101 and the inner paper tube 102, and the pressure-reducing material 1104 is foam glue.

[0034] Specifically, by filling the pressure relief material 1104 between two adjacent elastic sheets 1101, when the outer paper tube 101 is subjected to an external pressure, the external force generated when deforming the elastic sheet 1101 can be further reduced. At the same time, the reinforcing ribs 1102 all move inward along the axis of the inner paper tube 102, so that the reinforcing ribs 1102 are inserted into the insertion holes 1103 and continuously apply pressure to the wall of the inner paper tube 102. Combining with the pressure exerted on the inner wall of the inner paper tube 102 by the outward expansion of the T-shaped block 6, two opposite acting forces are formed, improving the stability of the packaging paper tube when subjected to an external force, that is, enhancing the hardness of the packaging paper tube.

[0035] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of the claims of the present invention.

Claims

1. A high-hardness packaging paper tube, comprising a paper tube body (1), characterized in that, One end of the paper tube body (1) is provided with a bottom plate (2). A regulating rod (3) is threadedly connected to the center of the bottom plate (2), and the regulating rod (3) extends into the inner cavity of the paper tube body (1). A sleeve (4) is fixedly installed on the outer wall of the regulating rod (3). A fixing block (5) is integrally formed and connected to the outer wall of the sleeve (4), and three groups of fixing blocks (5) are arranged in a ring shape. A T-shaped block (6) for supporting the inner side of the paper tube body (1) is arranged on the top of the fixing block (5). A plurality of connecting rods (7) are rotatably connected between the fixing block (5) and the T-shaped block (6), and the connecting rods (7) are symmetrically arranged on both sides of the fixing block (5). A rectangular hole (8) is penetrated through the wall body of the bottom plate (2), and the number of the rectangular holes (8) is the same as that of the T-shaped blocks (6). A slider (9) is connected to the outer wall of the T-shaped block (6), and the slider (9) is slidably connected in the rectangular hole (8).

2. The high-hardness packaging paper tube according to claim 1, characterized in that, A rotating disc (10) is fixedly installed at one end of the regulating rod (3) away from the paper tube body (1). A turning handle is fixedly connected to the outer wall of the rotating disc (10).

3. The high-hardness packaging paper tube according to claim 1, wherein The length of the T-shaped block (6) is equal to or greater than the axial length of the paper tube body (1).

4. The high-hardness packaging paper tube according to claim 1, wherein The paper tube body (1) includes an outer paper tube (101) and an inner paper tube (102) adhesively connected to the inner side of the outer paper tube (101). A compression resistance mechanism (11) is arranged between the outer paper tube (101) and the inner paper tube (102).

5. The high-hardness packaging paper tube according to claim 4, wherein The compression resistance mechanism (11) includes a plurality of elastic sheets (1101) arranged in a ring shape between the outer paper tube (101) and the inner paper tube (102), and the elastic sheets (1101) are integrally arched. Both ends of the bottom of the elastic sheet (1101) are connected to the outer wall of the inner paper tube (102).

6. The high-hardness packaging paper tube according to claim 5, wherein Reinforcing ribs (1102) are arranged between the inner paper tube (102) and the elastic sheet (1101), and the top ends of the reinforcing ribs (1102) are connected to the outer wall of the elastic sheet (1101). Insertion holes (1103) are formed in the wall body of the inner paper tube (102), and the number of the insertion holes (1103) is the same as that of the reinforcing ribs (1102).

7. The high-hardness packaging paper tube according to claim 5, wherein A decompression material (1104) is filled in the gap between the outer paper tube (101) and the inner paper tube (102), and the decompression material (1104) is foam glue.

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