A kind of thermosetting adhesive coating device for reinforcing steel wire of rubber insulated cable

Abstract

The application relates to a hot-melt adhesive coating device for a steel wire of a skin wire optical cable, and belongs to the technical field of skin wire optical cable production, which comprises a coating box, filter blocks are fixedly connected to both ends in the coating box, a hot-melt adhesive hopper is fixedly connected to the top end of the coating box, fixed grooves are formed in the two sides of the inner wall of the coating box, a screw rod is rotatably connected to the inside of one of the fixed grooves, and a limiting rod is fixedly connected to the inside of the other fixed groove. The application has the beneficial effect that after the steel wire body is inserted into the coating box, the steel wire body will be in contact with the movable coating roller and the fixed coating roller on the side, so that the bristles on the coating roller can be used to coat the hot-melt adhesive on the outer periphery of the steel wire body, thereby reducing the unevenness of the hot-melt adhesive on the surface of the steel wire body, and through the arrangement of the filter blocks, the excess hot-melt adhesive on the surface of the steel wire body in the discharging state can be scraped off, so that the uniformity of the coating can be further improved.

Description

Technical Field

[0001] This application relates to the field of drop optical cable manufacturing technology, and in particular to a hot melt adhesive coating device for reinforcing steel wires of drop optical cables. Background Technology

[0002] Drop optical cables, also known as butterfly optical cables or figure-eight optical cables, are widely used in access networks due to their flexibility and light weight. In the cross-section of a drop optical cable, the optical fiber is in the center, with two parallel steel wires or FRP non-metallic reinforcing members (used to enhance tensile strength) placed on both sides. Finally, a sheath is extruded on the outside. During the production process of drop optical cables, hot melt adhesive needs to be applied to the steel wires before laying them out to enhance the adhesion of the wires and prevent the steel wires from rusting.

[0003] A search revealed a Chinese patent (authorization announcement number CN218647196U) that discloses a hot melt adhesive coating device for reinforcing steel wires of drop optical cables. The device includes a support vertically fixed to the ground and a control box mounted on the support and equipped with an electromagnetic controller. The device also includes a hot melt adhesive hopper made of steel plate mounted on the support, a mold arranged below the hot melt adhesive hopper, a wire hole horizontally opened in the mold and communicating with the hot melt adhesive hopper, a heating coil wound around the outside of the hot melt adhesive hopper and connected to the electromagnetic controller, and an insulation layer covering the outside of the heating coil. This patented technology can quickly and automatically coat the steel wire with hot melt adhesive during the production process.

[0004] However, the above-mentioned device still has some drawbacks in actual use. The most obvious one is that the hot melt adhesive in the device falls under its own gravity, and the device lacks a coating function, which makes it difficult to evenly coat the hot melt adhesive on the outer circumference of the steel wire. In addition, the device lacks a function to recover the hot melt adhesive, which makes it easy for excess hot melt adhesive to spread out from the holes at both ends of the mold, thus wasting the hot melt adhesive. Utility Model Content

[0005] In view of the above-mentioned problems in the prior art, the main objective of this application is to provide a hot melt adhesive coating device for reinforcing steel wires of drop optical cables.

[0006] The technical solution of this application is as follows: a hot melt adhesive coating device for reinforcing steel wire of a drop optical cable includes a coating box. Filter blocks are fixedly connected to both ends inside the coating box. A hot melt adhesive hopper is fixedly connected to the top of the coating box. Fixed grooves are provided on both sides of the inner wall of the coating box. A screw is rotatably connected inside one of the fixed grooves, and a limiting rod is fixedly connected inside the other fixed groove. A limiting block is slidably connected to the outside of the limiting rod. A threaded block is threadedly connected to the outside of the screw. A movable coating roller is rotatably connected between the threaded block and the limiting block. A fixed coating roller is rotatably installed inside the coating box and below the movable coating roller.

[0007] By adopting the above technical solution, the filter block can scrape off excess hot melt adhesive from the surface of the steel wire body in the discharge state, thereby further improving the uniformity of coating. The rotation of the screw can drive the threaded block to move, and under the limiting position of the limiting rod and the limiting block, the coating distance between the moving coating roller and the fixed coating roller can be adjusted.

[0008] In a preferred embodiment, the bottom of the coating box is provided with a recycling component, the recycling component including a discharge port fixedly connected to the bottom of the coating box, the outer side of the discharge port is provided with an external thread, the threaded portion of the discharge port is threadedly connected to a recycling tank, and a filter plate is fixedly installed inside the discharge port.

[0009] By adopting the above technical solution, the hot melt adhesive can be recycled through the recycling tank. Excess hot melt adhesive in the coating box will fall into the recycling tank through the discharge port. During its fall, it will come into contact with the filter plate, thereby filtering out impurities in the hot melt adhesive.

[0010] In a preferred embodiment, a main support is fixedly connected to both sides of the coating box, and a secondary support is fixedly connected to the top of the main support. The end of the secondary support away from the main support is fixedly connected to the outer wall of the hot melt adhesive hopper.

[0011] By adopting the above technical solution, the main support can provide better support for the coating box, while the secondary support can ensure the stability of the hot melt adhesive hopper.

[0012] In one preferred embodiment, a dust removal plug is adhered to the outside of one of the filter blocks, and a steel wire body is provided inside the coating box.

[0013] By adopting the above technical solution and setting the filter block, the hot melt adhesive in the coating box can be limited, preventing the hot melt adhesive from spreading out through its two ends.

[0014] In a preferred embodiment, both the filter block and the dust removal plug have insertion holes inside for use with the steel wire body.

[0015] By adopting the above technical solution, it is convenient to insert the steel wire body.

[0016] In a preferred embodiment, a drive motor is fixedly mounted on the top of the coating box, and the output shaft of the drive motor extends into the interior of the fixing groove and is fixedly connected to the screw.

[0017] By adopting the above technical solution, the rotation of the output shaft of the drive motor can drive the screw to rotate, thereby realizing the transmission of power.

[0018] In a preferred embodiment, the inner wall of the coating tank is provided with an inclined surface to facilitate drainage.

[0019] By adopting the above technical solution, the inclined surface is designed to facilitate the discharge of hot melt adhesive.

[0020] Compared with the prior art, the advantages and positive effects of this application are as follows:

[0021] 1. In this application, after the worker inserts the steel wire body into the coating box, it will come into contact with the movable coating roller and the fixed coating roller on its side. This allows the brush bristles on the coating roller to apply hot melt adhesive to the outer periphery of the steel wire body, thereby reducing the unevenness of the hot melt adhesive on the surface of the steel wire body. Furthermore, the filter block can scrape off excess hot melt adhesive on the surface of the steel wire body in the discharge state, thereby further improving the uniformity of coating. The rotation of the screw can drive the threaded block to move, and under the limiting action of the limiting rod and the limiting block, the coating distance between the movable coating roller and the fixed coating roller can be adjusted, thus adapting to different coating requirements.

[0022] 2. In this application, excess hot melt adhesive in the coating box will fall into the recycling tank through the discharge port. During its fall, it will come into contact with the filter plate, thereby filtering out impurities in the hot melt adhesive. Finally, the hot melt adhesive can be recycled through the recycling tank, avoiding the accumulation of hot melt adhesive in the coating box and causing overflow. Attached Figure Description

[0023] Figure 1 This application provides an overall perspective view of a hot melt adhesive coating device for reinforcing steel wires in drop optical cables;

[0024] Figure 2 This application provides a cross-sectional view of a hot melt adhesive coating device for reinforcing steel wires in drop optical cables;

[0025] Figure 3This application provides a bottom view of a hot melt adhesive coating device for reinforcing steel wires of drop optical cables;

[0026] Figure 4 This application provides a schematic diagram of the structure of a mobile coating roller and a fixed coating roller in a hot melt adhesive coating device for reinforcing steel wires of a drop optical cable;

[0027] Figure 5 This application provides a hot melt adhesive coating device for reinforcing steel wires in drop optical cables. Figure 2 Enlarged view of point A in the middle.

[0028] Legend: 1. Coating box; 2. Steel wire body; 3. Hot melt adhesive hopper; 4. Dust removal plug; 5. Main support; 6. Recovery tank; 7. Filter block; 8. Fixing groove; 9. Drive motor; 10. Screw; 11. Threaded block; 12. Limiting rod; 13. Limiting block; 14. Moving coating roller; 15. Fixed coating roller; 16. Filter plate; 17. Discharge port; 18. Secondary support. Detailed Implementation

[0029] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] Reference Figure 1-5A hot melt adhesive coating device for reinforcing steel wires of fiber optic cables includes a coating box 1. Filter blocks 7 are fixedly connected to both ends inside the coating box 1. A hot melt adhesive hopper 3 is fixedly connected to the top of the coating box 1. Fixing grooves 8 are provided on both sides of the inner wall of the coating box 1. A screw 10 is rotatably connected inside one fixing groove 8, and a limiting rod 12 is fixedly connected inside the other fixing groove 8. A limiting block 13 is slidably connected to the outer side of the limiting rod 12. A threaded block 11 is threadedly connected to the outer side of the screw 10. A movable coating roller 14 is rotatably connected between the threaded block 11 and the limiting block 13. A fixed coating roller 15 is rotatably installed inside the coating box 1 and below the movable coating roller 14. The operator applies the steel wire body... After being inserted into the coating box 1, the wire 2 will come into contact with the movable coating roller 14 and the fixed coating roller 15 on its side. This allows the brush bristles on the coating roller to apply hot melt adhesive to the outer periphery of the wire body 2, thereby reducing the unevenness of the hot melt adhesive on the surface of the wire body 2. Furthermore, the filter block 7 can scrape off excess hot melt adhesive on the surface of the wire body 2 during the discharge process, thereby further improving the uniformity of the coating. The rotation of the screw 10 can drive the threaded block 11 to move, and under the limiting position of the limiting rod 12 and the limiting block 13, the coating distance between the movable coating roller 14 and the fixed coating roller 15 can be adjusted to meet different coating requirements.

[0031] Specifically, a recycling component is provided at the bottom of the coating box 1. The recycling component includes a discharge port 17 fixedly connected to the bottom of the coating box 1. Excess hot melt adhesive in the coating box 1 will fall into the recycling tank 6 through the discharge port 17. During its fall, it will come into contact with the filter plate 16, thereby filtering impurities in the hot melt adhesive. Finally, the hot melt adhesive can be recycled through the recycling tank 6, preventing the hot melt adhesive from accumulating in the coating box 1 and overflowing. The discharge port 17 has an external thread on its outer side, and the threaded part of the discharge port 17 is threadedly connected to the recycling tank 6. The discharge port 17 is fixedly installed inside. The coating box 1 has a filter plate 16. Both sides of the coating box 1 are fixedly connected to the main support 5. The main support 5 provides good support for the coating box 1. The auxiliary support 18 ensures the stability of the hot melt adhesive hopper 3. The top of the main support 5 is fixedly connected to the auxiliary support 18. The end of the auxiliary support 18 away from the main support 5 is fixedly connected to the outer wall of the hot melt adhesive hopper 3. A dust removal plug 4 is glued to the outside of one of the filter blocks 7. The dust removal plug 4 can scrape off the dust on the surface of the steel wire body 2 to avoid the presence of impurities affecting the coating effect. The coating box 1 is equipped with the steel wire body 2.

[0032] Specifically, both the filter block 7 and the dust removal plug 4 have insertion holes inside that cooperate with the steel wire body 2 to limit the steel wire body 2. The filter block 7 is designed to limit the hot melt adhesive in the coating box 1, preventing the hot melt adhesive from spreading out through its two ends. A drive motor 9 is fixedly installed on the top of the coating box 1. The output shaft of the drive motor 9 extends into the interior of the fixed groove 8 and is fixedly connected to the screw 10. The rotation of the output shaft of the drive motor 9 can drive the screw 10 to rotate, thereby realizing the transmission of power. The inner wall of the coating box 1 is provided with a slope to facilitate drainage.

[0033] Working principle: First, the operator pours hot melt adhesive into the hot melt adhesive hopper 3, and then inserts the steel wire body 2 into the dust removal plug 4 and the insertion hole inside the steel wire body 2 in sequence. The coating distance between the movable coating roller 14 and the fixed coating roller 15 can then be adjusted according to different coating requirements. The drive motor 9 can be started via an external controller, which drives the screw 10 to rotate, thus moving the threaded block 11. With the cooperation of the limit rod 12 and the limit block 13, the coating height of the movable coating roller 14 can be adjusted. This allows the bristles on the coating roller to apply the hot melt adhesive to the outer periphery of the steel wire body 2, thereby reducing the surface heat of the steel wire body 2. The unevenness of the molten adhesive is addressed by the filter block 7, which scrapes off excess hot melt adhesive from the surface of the steel wire body 2 during the discharge process. This further improves the uniformity of the coating. The filter block 7 also increases the spread height of the hot melt adhesive, preventing it from spreading out from both ends. As production time gradually increases, excess hot melt adhesive in the coating box 1 falls into the recovery tank 6 through the discharge port 17. During its fall, it comes into contact with the filter plate 16, which filters out impurities in the hot melt adhesive. Finally, the hot melt adhesive can be recovered through the recovery tank 6, preventing it from accumulating in the coating box 1 and overflowing.

[0034] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0035] The above are merely preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A hot melt adhesive coating device for reinforcing steel wires of drop optical cables, comprising a coating box (1), characterized in that: The coating box (1) has filter blocks (7) fixedly connected to both ends inside. The top of the coating box (1) is fixedly connected to a hot melt adhesive hopper (3). The inner walls of the coating box (1) are provided with fixing grooves (8) on both sides. A screw (10) is rotatably connected inside one of the fixing grooves (8). A limit rod (12) is fixedly connected inside the other fixing groove (8). A limit block (13) is slidably connected to the outside of the limit rod (12). A threaded block (11) is threadedly connected to the outside of the screw (10). A movable coating roller (14) is rotatably connected between the threaded block (11) and the limit block (13). A fixed coating roller (15) is rotatably installed inside the coating box (1) and below the movable coating roller (14).

2. The hot melt adhesive coating device for reinforcing steel wires of drop optical cables according to claim 1, characterized in that: The bottom of the coating box (1) is provided with a recycling component, which includes a discharge port (17) fixedly connected to the bottom of the coating box (1). The discharge port (17) is provided with an external thread on the outside. The threaded part of the discharge port (17) is threadedly connected to a recycling tank (6). A filter plate (16) is fixedly installed inside the discharge port (17).

3. The hot melt adhesive coating device for reinforcing steel wires of drop optical cables according to claim 1, characterized in that: Both sides of the coating box (1) are fixedly connected to a main support (5), and the top of the main support (5) is fixedly connected to a secondary support (18). The end of the secondary support (18) away from the main support (5) is fixedly connected to the outer wall of the hot melt adhesive hopper (3).

4. The hot melt adhesive coating device for reinforcing steel wires of drop optical cables according to claim 1, characterized in that: One of the filter blocks (7) has a dust plug (4) bonded to its outer side, and the coating box (1) has a steel wire body (2) inside.

5. The hot melt adhesive coating device for reinforcing steel wires of drop optical cables according to claim 1, characterized in that: Both the filter block (7) and the dust removal plug (4) have insertion holes inside that are used in conjunction with the wire body (2).

6. The hot melt adhesive coating device for reinforcing steel wires of drop optical cables according to claim 1, characterized in that: A drive motor (9) is fixedly installed on the top of the coating box (1), and the output shaft of the drive motor (9) extends into the interior of the fixing groove (8) and is fixedly connected to the screw (10).

7. The hot melt adhesive coating device for reinforcing steel wires of drop optical cables according to claim 1, characterized in that: The inner wall of the coating tank (1) is provided with an inclined surface to facilitate drainage.

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