Paper tube for winding thick metal strip with in-line pressure-resistant structure

By incorporating a support ring and support rod structure inside the paper tube, combined with a waterproof skin, the problem of insufficient compressive strength of the paper tube is solved, thereby improving the stability and waterproof effect of the paper tube.

CN224324972UActive Publication Date: 2026-06-05HANGZHOU JINFENG PAPER PIPE CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HANGZHOU JINFENG PAPER PIPE CO LTD
Filing Date
2025-08-11
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

The existing thick paper tubes have insufficient compressive strength when winding metal strips, which makes them prone to deformation and loosening of the metal strips during transportation.

Method used

A support ring and support rod structure are set inside the paper tube body. The support rod is quickly connected by a connecting ring and a fixing block. Combined with the inner and outer waterproof skin, the paper tube's compressive strength and waterproof performance are improved.

Benefits of technology

This technology improves the compressive strength of paper tubes, prevents deformation, and enables quick assembly and disassembly, thus enhancing stability and waterproofing during transportation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to metal thin strip production technical field discloses thick type metal thin strip winding paper tube with anti -pressure structure in area, including paper tube body, two ends of paper tube body inside respectively swing joint has a set of support ring, the center line of support ring and the center line of paper tube body are on the same horizontal plane. That thick type metal thin strip winding paper tube with anti -pressure structure in area through setting up support ring, support rod and connecting ring, the support ring of installing in the paper tube body inside both ends of this structure can support the pipe mouth of paper tube body, and the support rod is installed between two sets of support rings, and the inner wall of paper tube body can support the whole paper tube body that the support rod is pasted, can effectively improve the compression resistance of paper tube body, and the connecting ring installed between multiple sets of support rods can support each set of support rod, to further improve the support performance to paper tube body, solve the problem of insufficient compression resistance.
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Description

Technical Field

[0001] This utility model relates to the field of metal strip production technology, specifically to a paper tube for winding thick metal strip with an internal pressure-resistant structure. Background Technology

[0002] Metal strip is a long strip of metal material with uniform thickness, which is produced by rolling process. This material retains the physical properties of metal while being flexible and foldable. It is widely used in a variety of industrial production fields. After rolling, metal strip generally needs to be wound for storage and transportation. Thick paper tubes are commonly used for winding metal strip.

[0003] However, the thick paper tubes used for winding metal strips still have some defects in use. Due to the paper material, the compressive strength is not high when winding metal strips, and the metal strips are prone to deformation during transportation, causing them to loosen.

[0004] A novel paper tube for winding thick metal strips with an internal compressive strength structure is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a paper tube for winding thick metal strips with an internal pressure-resistant structure, so as to solve the problem of insufficient pressure resistance mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a thick metal strip winding paper tube with an internal pressure-resistant structure, comprising a paper tube body, wherein a set of support rings are movably connected to both ends of the paper tube body, the center line of the support rings is on the same horizontal plane as the center line of the paper tube body, and the inside of the paper tube body is provided with a pressure-resistant structure for improving pressure resistance.

[0007] The compression-resistant structure includes support rods. A set of support rods is movably connected to both sides and both ends inside the paper tube body. A connecting ring is fixedly connected to the outside of the support rods.

[0008] As a further technical solution of this utility model, the center line of the connecting ring and the center line of the paper tube body are on the same vertical plane, and the support rods inside the paper tube body are arranged symmetrically.

[0009] As a further technical solution of this utility model, the support rod has grooves at both ends, a connecting spring is fixedly connected to one end of the groove, a sloping locking block is fixedly connected to one end of the connecting spring, and fixing blocks are fixedly connected to both sides and both ends of the support ring. A connecting slot is opened at one end of the fixing block, and a slot is opened on one side of the fixing block.

[0010] As a further technical solution of this utility model, the inclined card block is movably connected to the connecting slot, and the slot is movably connected to the support rod.

[0011] As a further technical solution of this utility model, a positioning baffle is fixedly connected to one end of the support ring, an outer waterproof skin is fixedly connected to the outside of the paper tube body, and an inner waterproof skin is fixedly connected to the inside of the paper tube body.

[0012] As a further technical solution of this utility model, the positioning baffle is movably connected to the paper tube body, and the center line of the positioning baffle and the center line of the paper tube body are on the same vertical plane.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the paper tube for winding thick metal thin strip with internal pressure-resistant structure not only improves the pressure resistance and enables rapid assembly, but also improves the waterproof effect;

[0014] (1) By setting up support rings, support rods and connecting rings, the support rings installed at both ends inside the paper tube body can support the opening of the paper tube body, and the support rods are installed between the two sets of support rings. The support rods are attached to the inner wall of the paper tube body to support the overall paper tube body, which can effectively improve the compressive strength of the paper tube body. The connecting rings installed between the multiple sets of support rods can connect and support each set of support rods to further improve the support performance of the paper tube body, thus realizing the improvement of the compressive strength of the paper tube.

[0015] (2) By setting up a support ring, support rod, fixing block, connecting slot, groove, connecting spring, inclined plate and slot, before use, the support rod is inserted into the inside of the paper tube body, and then the two sets of support rings are inserted into the inside of the paper tube body from both ends, and each set of support rods is inserted into the slot. At the same time, the connecting spring in the groove rebounds and drives the inclined plate to be inserted into the connecting slot and engaged with it. Thus, the support ring is connected and positioned by the fixing block, and the structure can be quickly disassembled and assembled.

[0016] (3) By setting up positioning baffles, inner waterproof skin and outer waterproof skin, an outer waterproof skin is attached to the inner wall of the paper tube body of the structure, and an inner waterproof skin is attached to the outer wall of the paper tube body. The inner and outer waterproof skins seal the inner and outer layers of the paper tube body, which can effectively prevent moisture and prevent the paper tube body from being affected by moisture and causing deformation. In addition, the positioning baffles outside the support ring are attached to both ends of the paper tube body to prevent the edge of the paper tube body from getting wet. They can also be positioned when the metal strip is wound, thus improving the waterproof effect of the paper tube. Attached Figure Description

[0017] Figure 1 This is a frontal cross-sectional view of the present invention.

[0018] Figure 2 This is a side view sectional view of the support ring structure of this utility model;

[0019] Figure 3 This is a side sectional view of the fixing block of this utility model.

[0020] Figure 4 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0021] In the diagram: 1. Paper tube body; 2. Support ring; 3. Positioning baffle; 4. Support rod; 5. Fixing block; 6. Connecting ring; 7. Inner waterproof skin; 8. Outer waterproof skin; 9. Connecting slot; 10. Groove; 11. Connecting spring; 12. Angled locking block; 13. Slot. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example: Please refer to Figure 1-4 A thick metal strip winding paper tube with an internal pressure-resistant structure includes a paper tube body 1. A set of support rings 2 are movably connected to both ends inside the paper tube body 1. The center line of the support rings 2 is on the same horizontal plane as the center line of the paper tube body 1. The inside of the paper tube body 1 is provided with a pressure-resistant structure to improve the pressure resistance.

[0024] The compression-resistant structure includes support rods 4. A set of support rods 4 is movably connected to both sides and both ends inside the paper tube body 1. A connecting ring 6 is fixedly connected to the outside of the support rods 4.

[0025] The centerline of the connecting ring 6 is on the same vertical plane as the centerline of the paper tube body 1, and the support rods 4 inside the paper tube body 1 are arranged symmetrically.

[0026] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the support rings 2 installed at both ends inside the paper tube body 1 of this structure can support the opening of the paper tube body 1, and the support rods 4 are installed between the two sets of support rings 2. The support rods 4 fit against the inner wall of the paper tube body 1 and can support the entire paper tube body 1, which can effectively improve the compressive strength of the paper tube body 1. The connecting rings 6 installed between the multiple sets of support rods 4 can connect and support each set of support rods 4 to further improve the support performance of the paper tube body 1, thereby improving the compressive strength of the paper tube.

[0027] The support rod 4 has grooves 10 at both ends. A connecting spring 11 is fixedly connected to one end of the groove 10. A sloping block 12 is fixedly connected to one end of the connecting spring 11. Fixing blocks 5 are fixedly connected to both sides and both ends inside the support ring 2. A connecting slot 9 is opened at one end of the fixing block 5. A slot 13 is opened on one side of the fixing block 5.

[0028] The inclined block 12 is movably connected to the connecting slot 9, and the slot 13 is movably connected to the support rod 4;

[0029] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, before use, the support rod 4 is inserted into the inside of the paper tube body 1. Then, the two sets of support rings 2 are inserted into the inside of the paper tube body 1 from both ends, and the support rods 4 are inserted into the slots 13. At the same time, the connecting spring 11 inside the groove 10 rebounds, which can drive the inclined card block 12 to be inserted into the connecting card slot 9 and engage with it. Thus, the support ring 2 is connected and positioned by the fixing block 5, which enables the structure to be quickly assembled and disassembled.

[0030] A positioning baffle 3 is fixedly connected to one end of the support ring 2, an outer waterproof skin 8 is fixedly connected to the outside of the paper tube body 1, and an inner waterproof skin 7 is fixedly connected to the inside of the paper tube body 1.

[0031] The positioning baffle 3 is movably connected to the paper tube body 1, and the center line of the positioning baffle 3 and the center line of the paper tube body 1 are on the same vertical plane.

[0032] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, an outer waterproof layer 8 is attached to the inner wall of the paper tube body 1, and an inner waterproof layer 7 is attached to the outer wall of the paper tube body 1. The inner and outer waterproof layers 7 and 8 seal the inner and outer layers of the paper tube body 1, which can effectively prevent moisture and prevent the paper tube body 1 from being affected by moisture and deformed. In addition, the positioning baffle 3 outside the support ring 2 is attached to both ends of the paper tube body 1 to prevent the edge of the paper tube body 1 from getting wet. It can also be positioned when the metal strip is wound, thus improving the waterproof effect of the paper tube.

[0033] Working Principle: In use, the support rod 4 is first inserted into the paper tube body 1. Then, two sets of support rings 2 are inserted into the paper tube body 1 from both ends, and the support rods 4 are inserted into the slots 13. At the same time, the connecting spring 11 inside the groove 10 rebounds, which can drive the inclined locking block 12 to insert into the connecting slot 9 and engage with it. Thus, the support rings 2 are connected and positioned by the fixing block 5. The support rings 2 installed at both ends inside the paper tube body 1 can support the opening of the paper tube body 1. The support rod 4 is installed between the two sets of support rings 2. The support rod 4 fits against the inner wall of the paper tube body 1 and can support the overall structure of the paper tube body 1. The support can effectively improve the compressive strength of the paper tube body 1. The connecting ring 6 installed between the multiple sets of support rods 4 can connect and support each set of support rods 4 to further improve the support performance of the paper tube body 1. An outer waterproof skin 8 is attached to the inner wall of the paper tube body 1 in this structure, and an inner waterproof skin 7 is attached to the outer wall of the paper tube body 1. The inner waterproof skin 7 and the outer waterproof skin 8 seal the inner and outer layers of the paper tube body 1 to effectively prevent moisture and prevent the paper tube body 1 from being affected by moisture and causing deformation. In addition, the positioning baffle 3 outside the support ring 2 is attached to both ends of the paper tube body 1 to prevent the edge of the paper tube body 1 from getting wet, and can also be used to position it when the metal strip is wound.

Claims

1. A paper tube for winding thick metal strip with an internal pressure-resistant structure, comprising a paper tube body (1), characterized in that: The paper tube body (1) has a set of support rings (2) movably connected to both ends inside. The center line of the support rings (2) is on the same horizontal plane as the center line of the paper tube body (1). The paper tube body (1) is provided with a compression-resistant structure to improve its compression resistance. The pressure-resistant structure includes support rods (4). A set of support rods (4) is movably connected to both sides and both ends inside the paper tube body (1). A connecting ring (6) is fixedly connected to the outside of the support rods (4).

2. The paper tube for winding thick metal strips with an internal compressive strength structure according to claim 1, characterized in that: The centerline of the connecting ring (6) is on the same vertical plane as the centerline of the paper tube body (1), and the support rods (4) inside the paper tube body (1) are arranged symmetrically.

3. The paper tube for winding thick metal strips with an internal compressive strength structure according to claim 1, characterized in that: The support rod (4) has grooves (10) at both ends. A connecting spring (11) is fixedly connected to one end of the groove (10). A sloping locking block (12) is fixedly connected to one end of the connecting spring (11). Fixing blocks (5) are fixedly connected to both sides and both ends of the support ring (2). A connecting slot (9) is opened at one end of the fixing block (5). A slot (13) is opened on one side of the fixing block (5).

4. The paper tube for winding thick metal strips with an internal compressive strength structure according to claim 3, characterized in that: The inclined plate block (12) is movably connected to the connecting slot (9), and the slot (13) is movably connected to the support rod (4).

5. The paper tube for winding thick metal strips with an internal compressive strength structure according to claim 1, characterized in that: A positioning baffle (3) is fixedly connected to one end of the support ring (2), an outer waterproof skin (8) is fixedly connected to the outside of the paper tube body (1), and an inner waterproof skin (7) is fixedly connected to the inside of the paper tube body (1).

6. The paper tube for winding thick metal strips with an internal compressive strength structure according to claim 5, characterized in that: The positioning baffle (3) is movably connected to the paper tube body (1), and the center line of the positioning baffle (3) and the center line of the paper tube body (1) are on the same vertical plane.