Paper core tube

Abstract

The utility model discloses a paper core tube which comprises a paper outer tube and a paper inner tube which are coaxially arranged, a corrugated layer is arranged between the paper inner tube and the paper outer tube, the corrugated layer comprises a plurality of outer ribs attached to the paper outer tube, an inner rib attached to the paper inner tube is arranged between every two adjacent outer ribs, and the outer ribs and the inner ribs are arranged in parallel. The inner rib and the outer rib are connected through two inclined struts which are arranged in a bilateral symmetry mode. A first reinforcing channel is formed between the outer edge strip and the two inclined supporting strips connected with the outer edge strip; a second reinforcing channel is formed between the inner rib and the two inclined struts connected with the inner rib; the first reinforcing channel and the second reinforcing channel are each internally provided with a reinforcing pipe extending along the axis of the outer paper pipe or the axis of the inner paper pipe. The paper core tube has the advantages of being light in weight, high in deformation resistance, complete in overall function and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of paper products, and more specifically, to a paper core tube. Background Art

[0002] In order to enhance the deformation resistance of traditional paper tubes, the wall thickness is usually increased. Increasing the wall thickness of the paper core tube is indeed an effective means to improve the deformation resistance, but this will not only greatly increase the raw materials for making the paper core tube, but also greatly increase the weight of the paper core tube, making it bulky to use and having a poor overall effect. Based on this, the utility model proposes a paper core tube. Utility Model Content

[0003] The utility model aims to overcome the above-mentioned deficiencies in the prior art and to provide a paper core tube which has the characteristics of light weight and strong deformation resistance.

[0004] In order to solve the above technical problems, the purpose of the utility model is achieved as follows: the utility model involves a paper core tube, including a paper outer tube and a paper inner tube arranged coaxially, a corrugated layer is provided between the paper inner tube and the paper outer tube, the corrugated layer includes a plurality of outer ribs attached to the paper outer tube, an inner rib attached to the paper inner tube is provided between two adjacent outer ribs, and the inner rib and the outer rib are connected by two oblique struts arranged symmetrically on the left and right.

[0005] The utility model is further configured as follows: a first reinforcement channel is formed between the outer rib and two diagonal braces connected thereto; and a second reinforcement channel is formed between the inner rib and two diagonal braces connected thereto.

[0006] The utility model is further configured as follows: a reinforcement tube extending along the axis of the paper outer tube or the paper inner tube is respectively provided in the first reinforcement channel and the second reinforcement channel;

[0007] The tube walls of the reinforcing tube in the first reinforcing channel are respectively connected to the diagonal braces and the paper inner tube;

[0008] The tube walls of the reinforcing tube in the second reinforcing channel are connected to the oblique support bars and the paper outer tube respectively.

[0009] The utility model is further configured as follows: a spiral reinforcement sheet is arranged inside the reinforcement tube, the spiral reinforcement sheet extends along the axis of the reinforcement tube, and the outer side surface of the spiral reinforcement sheet is connected to the inner wall surface of the reinforcement tube.

[0010] The utility model is further configured as follows: the thickness of the paper outer tube and the paper inner tube are equal.

[0011] To sum up, the utility model has the following beneficial effects: the paper core tube involved in the utility model, by adding a corrugated layer between the paper outer tube and the paper inner tube, and adding a reinforcing tube in the channel formed between the corrugated layer and the paper outer tube and the paper inner tube, achieves the effect of effectively improving the deformation resistance of the tube wall without significantly increasing the overall mass of the paper core tube, and the overall function is perfect and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a partial structural schematic diagram of the utility model;

[0014] Figure 3 It is a partial structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the technical solution of the utility model, the preferred implementation scheme of the utility model is described below in conjunction with specific embodiments, but it should be understood that these descriptions are only for further illustrating the features and advantages of the utility model, rather than limiting the patent requirements of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0016] The utility model is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0017] Example 1

[0018] See also Figure 1 and Figure 2 As shown, a paper core tube involved in this embodiment includes a coaxially arranged paper outer tube 10 and a paper inner tube 20, a corrugated layer 30 is provided between the paper inner tube 20 and the paper outer tube 10, the corrugated layer 30 includes a plurality of outer ribs 31 attached to the paper outer tube 10, an inner rib 32 attached to the paper inner tube 20 is provided between two adjacent outer ribs 31, and the inner rib 32 is connected to the outer rib 31 by two oblique braces 33 symmetrically arranged on the left and right.

[0019] Furthermore, the paper outer tube 10 and the paper inner tube 20 have the same thickness.

[0020] In this embodiment, a corrugated layer 30 is provided between the paper outer tube 10 and the paper inner tube 20 for connection and strengthening the structural strength, thereby ensuring that the mass of the tube is not greatly increased while effectively improving the deformation resistance of the tube wall.

[0021] Example 2

[0022] See also Figure 1 and Figure 2 As shown, the paper core tube involved in this embodiment is further configured on the basis of Example 1, so that a first reinforcement channel 34 is formed between the outer rib 31 and the two oblique struts 33 connected thereto; and a second reinforcement channel 35 is formed between the inner rib 32 and the two oblique struts 33 connected thereto.

[0023] Furthermore, a reinforcing tube 40 extending along the axis of the paper outer tube 10 or the paper inner tube 20 is respectively disposed in the first reinforcing channel 34 and the second reinforcing channel 35;

[0024] The tube wall of the reinforcing tube 40 in the first reinforcing channel 34 is connected to the diagonal brace 33 and the paper inner tube 20 respectively;

[0025] The tube walls of the reinforcing tube 40 in the second reinforcing channel 35 are connected to the oblique support bars 33 and the paper outer tube 10 respectively.

[0026] In this embodiment, a reinforcing tube 40 is installed in the first reinforcing channel 34 formed between the corrugated layer 30 and the paper outer tube 10 and in the second reinforcing channel 35 formed between the corrugated layer 30 and the paper inner tube 20. The outer wall of the reinforcing tube 40 is connected to the contacting surface by an adhesive, so that a tight connection is formed between the reinforcing tube 40 and the corrugated layer 30, the paper outer tube 10 and the paper inner tube 20, thereby further enhancing the deformation resistance of the paper core tube wall.

[0027] Example 3

[0028] See also Figures 1 to 3 As shown, the paper core tube involved in this embodiment is further configured on the basis of Example 2, wherein a spiral reinforcement sheet 41 is provided in the reinforcement tube 40, and the spiral reinforcement sheet 41 extends along the axis of the reinforcement tube 40, and the outer side surface of the spiral reinforcement sheet 41 is connected to the inner wall surface of the reinforcement tube 40.

[0029] In this embodiment, a spiral reinforcing sheet 41 extending along the axis of the reinforcing tube 40 is provided in the reinforcing tube 40, thereby improving the deformation resistance of the reinforcing tube 40 and further improving the deformation resistance of the entire tube wall of the paper core tube.

[0030] The paper core tube involved in the utility model achieves the effect of effectively improving the deformation resistance of the tube wall without significantly increasing the overall mass of the paper core tube by adding a corrugated layer between the paper outer tube and the paper inner tube and adding a reinforcing tube in the channel formed between the corrugated layer and the paper outer tube and the paper inner tube. The overall function is perfect and the practicability is strong.

[0031] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationship are based on the orientation or positional relationship actually shown, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in combination with the embodiments and according to specific circumstances.

[0032] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A paper core tube, characterized in that: It comprises a coaxially arranged paper outer tube and a paper inner tube, a corrugated layer is arranged between the paper inner tube and the paper outer tube, the corrugated layer comprises a plurality of outer ribs attached to the paper outer tube, an inner rib attached to the paper inner tube is arranged between two adjacent outer ribs, and the inner ribs are connected to the outer ribs by two oblique struts arranged symmetrically to the left and right; a first reinforcement channel is formed between the outer ribs and the two oblique struts connected thereto; a second reinforcement channel is formed between the inner ribs and the two oblique struts connected thereto; a reinforcement tube extending along the axis of the paper outer tube or the paper inner tube is respectively arranged in the first reinforcement channel and the second reinforcement channel; the tube wall of the reinforcement tube in the first reinforcement channel is respectively connected to the oblique struts and the paper inner tube; the tube wall of the reinforcement tube in the second reinforcement channel is respectively connected to the oblique struts and the paper outer tube.

2. The paper core tube according to claim 1, characterized in that: A spiral reinforcement sheet is arranged inside the reinforcement tube, and the spiral reinforcement sheet extends along the axis of the reinforcement tube, and the outer side surface of the spiral reinforcement sheet is connected to the inner wall surface of the reinforcement tube.

3. The paper core tube according to claim 1 or 2, characterized in that: The thickness of the paper outer tube and the paper inner tube is equal.

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