A water-blocking material applying apparatus for a water-blocking cable

Abstract

The utility model relates to a kind of water-blocking material applying equipment of special-shaped water-blocking cable, including glue injection mould and stranded wire mould, glue injection mould is equipped with glue applying cavity, glue injection mould is equipped with glue injection hole with glue applying cavity intercommunication, one end of glue injection hole is communicated with glue applying cavity, the other end of glue injection hole is connected with glue supply source, stranded wire mould is equipped with the forming hole coaxially arranged with glue applying cavity.The utility model has the beneficial effects that when the glue supply amount is greater than the set value, the pressure in the glue applying cavity is large, and then the elastic deformation part on the elastic diaphragm is opened, and then the excess water-blocking glue is backflowed from the elastic deformation part, when the pressure in the glue applying cavity is normal, the elastic deformation part on the elastic diaphragm is closed, and then the water-blocking glue is not backflowed from the elastic deformation part, which solves the technical problem that excessive water-blocking glue filling may cause water-blocking glue leakage, and then may cause water-blocking glue waste or pollution, and water-blocking glue filling too little may produce bubbles.

Description

Technical Field

[0001] This application relates to the field of cable technology, and specifically to a device for applying water-blocking material to a non-circular water-blocking cable. Background Technology

[0002] With the continuous development of marine resources by humankind, the exploration of the deep sea has been expanding in recent years, leading to an increasing demand for deep-sea cables. This requires cables to have a certain degree of waterproofness. For multi-core cables, large gaps will form between the cores after cabling, which need to be filled to prevent water from entering. Water-blocking yarn, water-blocking rope, or water-blocking adhesive are usually used for filling.

[0003] The existing publication number is CN 212411689 U's Chinese patent document discloses a single-wire forming hole arranged along the axial direction in the twisting die. The single-wire forming hole consists of two inclined hole sections with gradually decreasing inclination, a straight hole section, and a discharge hole section inclined to the other side. When the single wire passes through the single-wire inlet section, the distance between the single wire and the die wall in the injection die cannot be too large or too small. The single wire forms a relatively sealed state in the inclined hole section, the straight hole section, and the discharge hole section. Due to the rotation of the stranding body and the pulling of the discharge hole section, the single wire is evenly twisted into a conductor to form a pitch. The gap between the single wires is filled with water-blocking adhesive to achieve the purpose of water blocking, so that the excess water-blocking adhesive is left in the inclined die wall and the water-blocking adhesive is prevented from leaking out at the interface. However, when the water-blocking adhesive is filled too much in the injection die, the inclined die wall alone is not enough to recover all the water-blocking adhesive, and there may be overflow of adhesive, which will cause waste or pollution. When the water-blocking adhesive is filled too little in the injection die, air bubbles may enter, resulting in poor coating effect. Utility Model Content

[0004] The purpose of this utility model is to provide a water-blocking material application device for irregularly shaped water-blocking cables, so as to solve the technical problems that excessive water-blocking glue filling may cause water-blocking glue leakage, which in turn will lead to waste or pollution of water-blocking glue, and insufficient water-blocking glue filling will cause air bubbles.

[0005] The technical solution of this utility model is as follows: A water-blocking material application device for a special-shaped water-blocking cable includes an injection mold and a stranding mold. The injection mold has a coating cavity and an injection hole communicating with the coating cavity. One end of the injection hole is connected to the coating cavity, and the other end is connected to a glue supply source. The stranding mold has a forming hole coaxially arranged with the coating cavity and communicating with the interior of the coating cavity. The injection mold has an overflow hole communicating with the coating cavity. An elastic diaphragm is provided inside the overflow hole, and an elastic deformation part is provided on the elastic deformation part. The elastic deformation part has an open position and a closed position. When the water-blocking glue fills the coating cavity and reaches the set pressure, the slit opens, the elastic deformation part is in the open position, and the water-blocking glue overflows from the slit. When the set pressure is not reached, the slit closes, the elastic deformation part is in the closed position, and the overflow hole is closed.

[0006] The beneficial effects of this technical solution are as follows: Because the elastic diaphragm has a certain elasticity, when the amount of adhesive supplied is greater than the set value, the pressure inside the coating chamber is high, which causes the elastic deformation part on the elastic diaphragm to open, allowing excess water-blocking adhesive to flow back from the elastic deformation part. When the pressure inside the coating chamber is at a normal value, the elastic deformation part on the elastic diaphragm closes, preventing the water-blocking adhesive from flowing back from the elastic deformation part. By using the elastic diaphragm, the issue of adhesive supply can be eliminated. At the same time, the elastic diaphragm is simple and convenient, and has a certain pressure-holding capacity, similar to an overflow valve. This solves the technical problems that excessive water-blocking adhesive filling may cause leakage, resulting in waste or contamination of the water-blocking adhesive, and insufficient water-blocking adhesive filling may cause air bubbles.

[0007] Preferably, the overflow hole has an internal thread, and a threaded cylinder is connected to the internal thread of the overflow hole. The threaded cylinder has a through hole that is coaxial with the overflow hole. An annular baffle is fixedly connected to the inner wall of the overflow hole, and the edge of the elastic diaphragm is pressed against the annular baffle by the threaded cylinder.

[0008] Preferably, the glue supply source includes a glue supply pipe and a glue supply box, and a recovery pipe is fixedly connected to the glue supply box, with the recovery pipe communicating with the interior of the overflow hole.

[0009] Preferably, the glue supply box is equipped with a material level sensor, which is used to monitor the material level in real time and prompt for adding material.

[0010] Preferably, multiple elastic diaphragms are provided, and the elastic diaphragms are arranged linearly inside the overflow hole.

[0011] Preferably, the cut is cross-shaped or straight.

[0012] Preferably, the elastically deformable portion has a shape that is thin in the middle and thick at both sides. Attached Figure Description

[0013] Figure 1This is a cross-sectional structural diagram of the present invention; Figure 2 This utility model Figure 1 Enlarged structural diagram at point A; Figure 3 The three-dimensional elastic diaphragm of this utility model Figure 1 ; Figure 4 The three-dimensional elastic diaphragm of this utility model Figure 2 .

[0014] In the diagram: 1-Injection mold, 101-Glue application cavity, 102-Injection hole, 103-Overflow hole, 104-Threaded cylinder, 105-Annular ring, 2-Stranded wire mold, 201-Forming hole, 3-Elastic diaphragm, 301-Slit. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0018] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0019] A specific embodiment of the water-blocking material application device for the irregularly shaped water-blocking cable of this utility model is as follows: Figures 1 to 2 As shown, a device for applying water-blocking material to a non-standard water-blocking cable includes an injection mold 1 and a stranding mold 2. The injection mold 1 has an adhesive coating cavity 101 and an injection hole 102 communicating with the adhesive coating cavity 101. One end of the injection hole 102 is connected to the adhesive coating cavity 101, and the other end is connected to an adhesive supply source. The stranding mold 2 has a forming hole 201 coaxially arranged with the adhesive coating cavity 101 and communicating with the interior of the adhesive coating cavity 101. The injection mold 1 also has an overflow hole 1. 03. The overflow hole 103 is connected to the adhesive application chamber 101. An elastic diaphragm 3 is provided inside the overflow hole 103. An elastic deformation part is provided on the elastic diaphragm 3. A slit 301 is opened on the elastic deformation part. The elastic deformation part has an open position and a closed position. When the water-blocking adhesive fills the adhesive application chamber 101 and reaches the set pressure, the slit 301 opens and the elastic deformation part is in the open position, and the water-blocking adhesive overflows from the slit 301. When the set pressure is not reached, the slit 301 closes and the elastic deformation part is in the closed position to close the overflow hole 103.

[0020] In use, the monofilaments pass sequentially through the coating chamber 101 and the overflow hole 103. Water-blocking adhesive is added into the coating chamber 101 through the injection hole 102, so that each monofilament is coated with water-blocking adhesive. After coating, when passing through the twisting mold 2, the water-blocking adhesive enters the mold along with the conductor, pressing the water-blocking adhesive into the gap. The monofilaments are twisted into conductors and discharged from the overflow hole 103. When adding water-blocking adhesive into the coating chamber 101, if the amount of adhesive supplied is greater than the set value, the pressure inside the coating chamber 101 is high, which causes the elastic deformation part on the elastic diaphragm 3 to open, and the excess water-blocking adhesive flows back from the cut 301. When the pressure inside the coating chamber 101 is at the normal value, the elastic deformation part on the elastic diaphragm 3 closes. Regarding the set pressure, the set pressure value is determined by the thickness and shape of the elastic deformation part, which is obtained through experiments.

[0021] The overflow hole 103 has an internal thread, and a threaded cylinder 104 is connected to the internal thread of the overflow hole 103. The threaded cylinder 104 has a through hole coaxially arranged with the overflow hole 103. An annular baffle 105 is fixedly connected to the inner wall of the overflow hole 103. The edge of the elastic diaphragm 3 is pressed onto the annular baffle 105 by the threaded cylinder 104.

[0022] When installing the elastic diaphragm 3, the threaded cylinder 104 is rotated so that the elastic diaphragm 3 can be pressed against the bottom of the annular ring 105, thereby completing the installation of the elastic diaphragm 3. The threaded cylinder 104 is connected to the inner wall of the overflow hole 103 by threads, making the installation and removal of the elastic diaphragm 3 simple and convenient.

[0023] The glue supply source includes a glue supply pipe and a glue supply box. A recovery pipe is fixedly connected to the glue supply box, and the recovery pipe is connected to the inside of the overflow hole 103.

[0024] When the amount of adhesive supplied exceeds the set value, the pressure inside the adhesive application chamber 101 is high, which causes the elastic deformation part on the elastic diaphragm 3 to open, allowing the excess water-blocking adhesive to flow from the overflow hole 103 into the inside of the recovery pipe, and then back into the adhesive supply box through the recovery pipe, thus preventing the waste of water-blocking adhesive.

[0025] The glue supply box is equipped with a material level sensor, which is used to monitor the material level in real time and prompt for adding material.

[0026] Multiple elastic diaphragms 3 are provided, and the elastic diaphragms 3 are arranged linearly inside the overflow hole 103.

[0027] By setting multiple elastic diaphragms 3, the strength and sealing performance of the elastic diaphragms 3 can be improved, thereby further enhancing the load-bearing capacity and sealing effect of the elastic diaphragms 3.

[0028] The elastically deformable part is thin in the middle and thick at both sides.

[0029] By designing the elastic deformation section to be thin in the middle and thick on both sides, the threaded cylinder 104 becomes more stable when it abuts against the two sides of the elastic deformation section.

[0030] like Figure 3 and Figure 4 As shown, the shape of the cut 301 is either cross-shaped or straight.

[0031] A pressure gauge and a flow meter can also be installed on the glue inlet pipe connected to the glue supply source. The pressure gauge can monitor the pressure of the delivery pipe. If a blockage or abnormal pressure occurs, it will immediately alarm and stop the machine. The flow meter can adjust the flow rate of the glue.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A device for applying water-blocking material to a non-standard water-blocking cable, comprising an injection mold and a stranding mold, wherein the injection mold has an adhesive coating cavity, and the injection mold has an injection hole communicating with the adhesive coating cavity, one end of the injection hole communicating with the adhesive coating cavity, and the other end of the injection hole being connected to an adhesive supply source; the stranding mold has a forming hole coaxially arranged with the adhesive coating cavity, and the forming hole communicating with the interior of the adhesive coating cavity, characterized in that: The injection mold has an overflow hole that communicates with the coating cavity. An elastic diaphragm is provided inside the overflow hole, and the elastic diaphragm has an elastic deformation part with a slit. The elastic deformation part has an open position and a closed position. When the water-blocking adhesive fills the coating cavity and reaches the set pressure, the slit opens and the elastic deformation part is in the open position, and the water-blocking adhesive overflows from the slit. When the set pressure is not reached, the slit closes and the elastic deformation part is in the closed position to close the overflow hole.

2. The water-blocking material application device for a non-circular water-blocking cable according to claim 1, characterized in that, The overflow hole has an internal thread, and a threaded cylinder is connected to the internal thread of the overflow hole. The threaded cylinder has a through hole that is coaxial with the overflow hole. An annular baffle is fixedly connected to the inner wall of the overflow hole. The edge of the elastic diaphragm is pressed against the annular baffle by the threaded cylinder.

3. The water-blocking material application device for a non-circular water-blocking cable according to claim 1, characterized in that, The glue supply source includes a glue supply pipe and a glue supply box. A recovery pipe is fixedly connected to the glue supply box, and the recovery pipe is connected to the inside of the overflow hole.

4. The water-blocking material application device for a non-circular water-blocking cable according to claim 3, characterized in that, The glue supply box is equipped with a material level sensor, which is used to monitor the material level in real time and prompt for adding material.

5. The water-blocking material application device for a non-circular water-blocking cable according to claim 1, characterized in that, Multiple elastic diaphragms are provided, and the elastic diaphragms are arranged linearly inside the overflow orifice.

6. The water-blocking material application device for a non-circular water-blocking cable according to claim 1, characterized in that, The cut shape is either cross-shaped or straight.

7. The water-blocking material application device for a non-circular water-blocking cable according to claim 1, characterized in that, The elastically deformable part is thin in the middle and thick at both sides.

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