Concentric soft rubber tube for two-component adhesive

Abstract

The invention relates to the technical field of rubber tubes, and aims to provide a concentric soft rubber tube for a two-component adhesive, the concentric soft rubber tube comprises an inner tube and an outer tube which are concentrically arranged, the inner tube and the outer tube are made of soft materials, one end of the inner tube is open, the other end of the outer tube is closed, the open end of the inner tube is connected with an inner connecting tube, and the open end of the outer tube is connected with an outer connecting tube. A first storage cavity used for storing a first component adhesive is formed in an inner cavity of the inner pipe, a second storage cavity used for storing a second component adhesive is formed between the outer pipe and the inner pipe, the inner connecting pipe is used for extruding the first component adhesive, and a gap is formed between the outer connecting pipe and the inner pipe and used for extruding the second component adhesive. The outer pipe and the inner pipe are both made of soft materials, so that the adhesive of two components can be simultaneously extruded by matching with a single-component glue gun with a protective pipe during use; in addition, due to the soft structures of the inner pipe and the outer pipe, the problem that the extruded part is broken due to external force can be avoided.

Description

Technical Field

[0001] This invention relates to the field of hose technology, and more specifically, to a concentric flexible hose for two-component adhesives. Background Technology

[0002] Two-component adhesives are widely used in electronic packaging, structural bonding, automotive, and industrial assembly. Their key characteristic is that the two adhesive components must be stored separately before use and then extruded and mixed simultaneously in a predetermined ratio. Therefore, dual-lumen tubing, concentric tubing, or parallel tubing are commonly used in the market as packaging and adhesive supply carriers.

[0003] In the prior art, a concentric circular packaging tube for two-component adhesives has been disclosed. It uses two concentrically arranged hollow cylinders to form a first fluid storage area and a second fluid storage area, respectively, achieving simultaneous storage and extrusion of the two-component adhesive. Patent CN207360987U discloses a concentric circular packaging tube for two-component adhesives. This design structurally meets the basic usage requirements of two-component adhesives and can adapt to different mixing ratios by changing the volume ratio of the two storage areas. However, in practical use, the above-mentioned prior art still has the following shortcomings: 1. Its inner hollow cylinder is made of rigid material, and its connection with the adhesive outlet is prone to breakage. Once broken, the adhesive product will become ineffective and unusable. 2. This structure requires two pistons (i.e., the first fluid bottom cover and the second fluid bottom cover as described in the patent document) to drive the adhesive in the first fluid storage area and the second fluid storage area to be extruded outward, respectively; 3. This two-component adhesive requires a special two-component glue gun for application, resulting in poor versatility; furthermore, the strong reaction force between the two components requires considerable force to apply the glue, making application difficult. 4. Some adhesives have a certain penetrating power into plastics, which leads to a shortened shelf life of two-component adhesives.

[0004] Therefore, there is an urgent need for a new type of two-component adhesive packaging tube to solve the technical problems encountered in the above-mentioned practical operations. Summary of the Invention

[0005] To address the problems existing in the prior art, the present invention provides a concentric flexible tubing for two-component adhesives to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a concentric flexible tube for a two-component adhesive, comprising an inner tube and an outer tube arranged concentrically, both the inner and outer tubes being made of a flexible material and both having one open end and one closed end. The open end of the inner tube is connected to an inner connecting tube, and the open end of the outer tube is connected to an outer connecting tube. The inner cavity of the inner tube forms a first storage cavity for storing a first component adhesive, and a second storage cavity for storing a second component adhesive is formed between the outer tube and the inner tube. The inner connecting tube is used for extruding the first component adhesive, and the outer connecting tube and the inner tube have a gap for extruding the second component adhesive.

[0007] By adopting the above technical solution, both the outer tube and the inner tube are made of soft materials. When used, they can be extruded simultaneously by using a single-component glue gun with a protective tube. In addition, the soft structure of the inner and outer tubes can prevent the extruded part from breaking due to external force.

[0008] The present invention is further configured such that a connecting structure is provided between the inner connecting tube and the outer connecting tube, and a channel for extruding the second component adhesive is formed between the connecting structure and the inner connecting tube, the channel being in communication with the gap.

[0009] The present invention is further configured such that the inner connecting tube includes a first tube body and a first connecting ring, the inner tube being sleeved outside the first tube body, and the first connecting ring being sleeved outside the entire inner tube and the first tube body. The first tube body and the first connecting ring are used to fix the inner tube.

[0010] The present invention is further configured such that the outer connecting pipe includes a second pipe body and a second connecting ring, the outer pipe being sleeved outside the second pipe body, and the second connecting ring being sleeved outside the entire outer pipe and the second pipe body. The second tube body and the second connecting ring are used to fix the outer tube.

[0011] The present invention is further configured such that the connecting structure is composed of a plurality of connecting blocks, which are fixed at equal intervals along the circumferential direction to the inner wall of the outer connecting pipe. The connecting block is located outside the first connecting ring, and the first connecting ring and the connecting block are interference-fitted.

[0012] The present invention is further configured such that the gap between any two adjacent connecting blocks serves as a channel for the extrusion of the second component adhesive.

[0013] Compared with the prior art, the present invention provides a concentric flexible tubing for two-component adhesives, which has the following beneficial effects: 1. Both the inner and outer tubes are made of soft materials, so the base of the first component adhesive will not break under external force, thus minimizing the risk of failure of the two-component adhesive mixture.

[0014] 2. When using this concentric soft hose, it can be adapted to a corresponding single-component glue gun equipped with a protective tube, so as to realize the synchronous extrusion of two-component adhesives through the single-component glue gun. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a concentric flexible tubing used for two-component adhesives; Figure 2 for Figure 1 A structural diagram from another perspective; Figure 3 A schematic diagram of the cross-sectional structure from a certain perspective; Figure 4 A schematic diagram of the cross-sectional structure from a certain perspective; Figure 5 for Figure 3 A partial structural diagram of region A in the middle; Figure 6 This is a schematic diagram of the overall structure viewed from below.

[0016] In the figure: 1. Inner tube; 101. First storage cavity; 2. Outer tube; 201. Second storage cavity; 3. Inner connecting tube; 301. First tube body; 302. First connecting ring; 4. Outer connecting tube; 401. Second tube body; 402. Second connecting ring; 5. Connecting structure; 501. Connecting block; 6. Connecting thread. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0019] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0020] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0021] Please see Figure 1-6 A concentric flexible tubing for a two-component adhesive includes an outer tube 2 and an inner tube 1 arranged concentrically. Both the inner tube 1 and the outer tube 2 are open at one end and closed at the other. The open end of the inner tube 1 is connected to an inner connecting tube 3, and the open end of the outer tube 2 is connected to an outer connecting tube 4. The inner cavity of the inner tube 1 forms a first storage cavity 101 for storing a first component adhesive, and a second storage cavity 201 for storing a second component adhesive is formed between the outer tube 2 and the inner tube 1.

[0022] The inner tube 1 and the outer tube 2 are both made of soft materials such as soft plastic or aluminum-plastic film, and their closed ends are sealed by metal buckles or heat sealing. The inner connecting tube 3 is used for the extrusion of the first component adhesive, and the outer connecting tube 4 has a gap with the inner tube 1 for the extrusion of the second component adhesive.

[0023] Specifically, the inner connecting tube 3 includes a first tube body 301 and a first connecting ring 302. The inner tube 1 is sleeved outside the first tube body 301, and the first connecting ring 302 is sleeved outside the inner tube 1 and the first tube body 301 as a whole. The first tube body 301 and the first connecting ring 302 cooperate to fix the inner tube 1. The outer connecting pipe 4 includes a second pipe body 401 and a second connecting ring 402. The outer pipe 2 is sleeved outside the second pipe body 401, and the second connecting ring 402 is sleeved outside the outer pipe 2 and the second pipe body 401 as a whole. The second pipe body 401 and the second connecting ring 402 cooperate to fix the outer pipe 2.

[0024] like Figure 3-5 As shown, a connecting structure 5 is provided between the inner connecting pipe 3 and the outer connecting pipe 4. A channel for the extrusion of the second component adhesive is formed between the connecting structure 5 and the inner connecting pipe 3. This channel is connected to the gap.

[0025] The connecting structure 5 is composed of several connecting blocks 501. The several connecting blocks 501 are fixed at equal intervals along the circumferential direction to the inner wall of the outer connecting tube 4. The connecting blocks 501 are located outside the first connecting ring 302, and the first connecting ring 302 and the connecting blocks 501 are interference fit. The gap between any two adjacent connecting blocks 501 serves as a channel for the second component adhesive to be extruded.

[0026] Specifically, several connecting blocks 501 are integrally formed with the second tube body 401 in the external connecting pipe 4.

[0027] like Figure 1 As shown, the second connecting ring 402 has a connecting thread 6 on its outer side, which is used to connect with an external sealing cap or a mixing pipe.

[0028] Specifically, when the finished product is being sold or stored, the sealing cap is connected to the connecting thread 6 to seal the adhesive inside the first tube 301 and the second tube 401. When using this finished product, remove the sealing cap, replace the corresponding mixing tube, and apply the adhesive with the corresponding single-component glue gun equipped with a protective tube.

[0029] In all the solutions mentioned above, although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concentric flexible tubing for two-component adhesives, characterized in that, It includes an inner tube (1) and an outer tube (2) arranged concentrically. Both the inner tube (1) and the outer tube (2) are made of soft material and are open at one end and closed at the other. The inner tube (1) is connected to an inner connecting tube (3) at its open end, and the outer tube (2) is connected to an outer connecting tube (4) at its open end. The inner cavity of the inner tube (1) forms a first storage cavity (101) for storing the first component adhesive. A second storage cavity (201) for storing the second component adhesive is formed between the outer tube (2) and the inner tube (1). The inner connecting tube (3) is used for the extrusion of the first component adhesive, and the outer connecting tube (4) has a gap with the inner tube (1) for the extrusion of the second component adhesive.

2. The concentric flexible tubing for two-component adhesives according to claim 1, characterized in that, A connecting structure (5) is provided between the inner connecting tube (3) and the outer connecting tube (4), and a channel for the second component adhesive to be extruded is formed between the connecting structure (5) and the inner connecting tube (3), and the channel is in communication with the void.

3. The concentric flexible tubing for two-component adhesives according to claim 2, characterized in that, The inner connecting tube (3) includes a first tube body (301) and a first connecting ring (302). The inner tube (1) is sleeved outside the first tube body (301), and the first connecting ring (302) is sleeved outside the inner tube (1) and the first tube body (301) as a whole. The first tube body (301) and the first connecting ring (302) are used to fix the inner tube (1).

4. A concentric flexible tubing for two-component adhesives according to claim 3, characterized in that, The external connecting pipe (4) includes a second pipe body (401) and a second connecting ring (402). The outer pipe (2) is sleeved on the outside of the second pipe body (401), and the second connecting ring (402) is sleeved on the outside of the outer pipe (2) and the second pipe body (401) as a whole. The second tube (401) and the second connecting ring (402) are used to fix the outer tube (2).

5. A concentric flexible tubing for a two-component adhesive according to claim 4, characterized in that, The connection structure (5) is composed of several connecting blocks (501), which are fixed at equal intervals along the circumferential direction to the inner wall of the outer connecting pipe (4). The connecting block (501) is located outside the first connecting ring (302), and the first connecting ring (302) and the connecting block (501) are interference fit.

6. A concentric flexible tubing for a two-component adhesive according to claim 5, characterized in that, The gap between any two adjacent connecting blocks (501) serves as a channel for the extrusion of the second component adhesive.

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