Combination fire barrier tape

Abstract

The utility model discloses a combined fire -resistant tape, it relates to cable fire -prevention technical field. Combined fire -resistant tape includes tape roll, shell, core column and spacing curtain. Among them, tape roll includes the core of winding and the body of layering and winding in the core of winding, and the core of winding is provided with the core hole, shell includes side wall shell and bottom plate, and the side wall shell and bottom plate surround and form the accommodation cavity, and the side opposite to bottom plate forms the opening that communicates with the accommodation cavity, and the side wall shell is provided with the export for the body of passing, and the core column is perpendicular to install in bottom plate and is cylindrical, and the core column is used for hanging tape roll, and the core column is coaxial with the core hole, and spacing curtain is used for blocking at least partial opening, and spacing curtain includes opposite setting root and free end, and the root is connected with the lateral wall of accommodation cavity, and the free end can be bent to the both sides of opening to open the opening. The combined fire -resistant tape provided by the scheme has the advantages of being capable of improving the operation efficiency of the cable coating and being convenient to replace the tape roll.

Description

Technical Field

[0001] This utility model relates to the field of cable fire protection technology, and in particular to a combined fire-retardant wrapping tape. Background Technology

[0002] Flame-retardant wrapping tape is a strip-shaped fireproof material wrapped around the outside of cables to retard flames when the cables burn. It is widely used in high and low voltage power cables. Currently, flame-retardant wrapping tape is usually applied by hand, tearing it to secure it to the cable. Therefore, some manufacturers have introduced different types of modular flame-retardant wrapping tape. These tape rolls are hung inside a protective casing, allowing the roll to rotate around the casing's axis when torn, eliminating the need for manual turning and pulling, thus improving the convenience of cable wrapping. However, once the tape roll inside the protective casing is used up, it needs to be replaced. Currently, modular flame-retardant wrapping tape suffers from inconvenient and inefficient roll replacement. Utility Model Content

[0003] The main purpose of this invention is to propose a combined fire-retardant wrapping tape, which aims to solve the technical problem of low wrapping tape roll replacement efficiency in existing combined fire-retardant wrapping tapes.

[0004] To achieve the above objectives, this utility model proposes a combined fire-retardant strap, comprising: A wrapping tape roll includes a core and a tape body layered and wound around the core, wherein the core has core holes; The outer shell includes a side shell and a bottom plate, the side shell and the bottom plate forming a receiving cavity, an opening communicating with the receiving cavity is formed on the side opposite to the bottom plate, and the side shell has an outlet for the belt to pass through; The core post is cylindrical and vertically mounted on the base plate. The core post is used to hang the tape roll, and the core post is coaxially arranged with the core hole. A limiting curtain is used to block at least part of the opening. The limiting curtain includes a root portion and a free end disposed opposite to each other. The root portion is connected to the side wall of the receiving cavity, and the free end is capable of bending to both sides of the opening to open the opening.

[0005] In one embodiment, the accommodating cavity is cylindrical in shape, and there are multiple limiting curtains arranged in a circumferential array on the side wall of the accommodating cavity.

[0006] In one embodiment, the combined fire-retardant strap further includes a cutting assembly, which includes a push button, a slider, and a blade. The side housing has a slide rail and a limiting port, the limiting port is connected to the slide rail, and the limiting port is located on the side of the side housing away from the receiving cavity. The slide rail is connected to the outlet. The slider is slidably mounted on the slide rail, the blade is mounted on the end of the slider near the outlet, the push button is mounted on the side of the slider away from the receiving cavity, and the push button passes through the limiting port. The push button is used to drive the slider to slide so that the blade extends into the outlet.

[0007] In one embodiment, the cutting assembly further includes a tension spring, the two ends of which are respectively connected to the end of the slider away from the outlet and the end of the slide away from the outlet, and the tension spring is capable of pulling the slider to slide.

[0008] In one embodiment, the slider has a slot at one end near the outlet, and the blade includes a retaining strip that engages with the slot.

[0009] In one embodiment, the blade further includes a cutting edge disposed opposite to the clip, the cutting edge being used to cut the belt body, and the cutting edge being beveled.

[0010] In one embodiment, the push button has multiple anti-slip grooves on the side away from the slider.

[0011] In one embodiment, the belt includes a mechanical protective layer, an expansion layer, a base layer and an adhesive layer arranged sequentially. The base layer includes a skeleton and a silicone filler, the silicone filler covering the skeleton, and the skeleton includes glass fiber and conductive fiber.

[0012] In one embodiment, the skeleton is a mesh structure.

[0013] In one embodiment, the mechanical protective layer comprises one of a polyurethane coating and a polyamide coating.

[0014] According to the technical solution of this utility model, the combined fire-retardant wrapping tape includes a wrapping tape roll, an outer shell, a core post, and a limiting curtain. The wrapping tape roll includes a core and a tape body layered and wound around the core, with a core hole in the core. The outer shell includes a side shell and a bottom plate, which together form a receiving cavity. An opening communicating with the receiving cavity is formed on the side opposite to the bottom plate, and an outlet for the tape body to pass through is provided on the side shell. The core post is cylindrical and vertically installed on the bottom plate, used to hang the wrapping tape roll, and is coaxially arranged with the core hole. The limiting curtain is used to block at least part of the opening, and includes a root and a free end arranged opposite each other. The root is connected to the side wall of the receiving cavity, and the free end can be bent to both sides of the opening to open it. This design allows the tape roll to be installed within the housing cavity, while the tape itself can exit through the outlet onto the side shell, facilitating the operator's tearing of the tape. During the tape removal process, the tape roll rotates around the core, eliminating the need for frequent wrist rotations and enabling quick and continuous tape removal. The inclusion of a retaining curtain prevents the tape roll from escaping the housing cavity during rotation. The free end of the retaining curtain can be bent to a certain extent, allowing the operator to easily reach into the housing cavity and remove the core when the tape roll is depleted. A new tape roll can then be directly inserted into the housing cavity. The retaining curtain automatically seals the new tape roll within the housing cavity upon its rebound, thus improving tape roll replacement efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 A schematic diagram of a structural embodiment of the combined fire-retardant strap provided by this utility model; Figure 2 for Figure 1 A structural diagram from another perspective; Figure 3 for Figure 1 A partial structural schematic diagram of the provided combined fire-retardant strap; Figure 4 for Figure 1 A schematic diagram of the side structure; Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure of section AA; Figure 6 This is a schematic diagram of the structure of one embodiment of the belt provided by this utility model.

[0017] Explanation of icon numbers: 100. Combined fire-retardant straps; 1. Packing tape roll; 11. Tape body; 111. Mechanical protective layer; 112. Expansion layer; 113. Base layer; 114. Adhesive layer; 2. Outer shell; 21. Side shell; 211. Outlet; 212. Slide rail; 213. Limiting port; 22. Base plate; 23. Receiving cavity; 24. Opening; 3. Core pillar; 4. Limiting curtain; 41. Base; 42. Free end; 5. Cutting assembly; 51. Push button; 511. Anti-slip groove; 52. Slider; 53. Blade; 54. Tension spring.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] 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.

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] Fire-retardant tape is a strip-shaped fire-resistant material specifically designed for cables, typically tightly wrapped around the outside of the cable. When a cable encounters a fire, the fire-retardant tape effectively isolates the flames, slows the spread of fire, and provides crucial protection for cable safety. Due to its excellent fire-resistant properties, fire-retardant tape is widely used in high and low voltage power supply cables. However, traditional fire-retardant tape requires manual tearing and wrapping around the cable, which is a cumbersome process. To improve efficiency, some manufacturers have developed modular fire-retardant tape, where the tape roll is placed inside a protective shell. The shell's axial design allows the tape to rotate automatically when torn, simplifying the wrapping process.

[0023] The applicant's observations revealed that while modular fire-arresting tape offers convenience in wrapping operations, it suffers from significant shortcomings in tape roll replacement. When the tape roll inside the protective casing is depleted, the operator must replace it for continued use. However, current modular fire-arresting tapes on the market have flawed tape roll replacement designs, resulting in a complex and time-consuming process. This not only affects the operator's experience but also reduces overall operational efficiency, becoming a bottleneck restricting the further promotion and application of modular fire-arresting tape.

[0024] In view of this, the present invention proposes a combined fire-retardant wrap to solve or at least alleviate the above problems.

[0025] Please see Figures 1 to 3 In one embodiment of this utility model, the combined fire-retardant wrapping tape 100 includes a wrapping tape roll 1, an outer shell 2, a core post 3, and a limiting curtain 4. The wrapping tape roll 1 includes a core and a tape body 11 layered and wound around the core, with a core hole in the core. The outer shell 2 includes a side shell 21 and a bottom plate 22, which together form a receiving cavity 23. An opening 24 communicating with the receiving cavity 23 is formed on the side opposite to the bottom plate 22, and an outlet 211 for the tape body 11 to pass through is formed on the side shell 21. The core post 3 is cylindrical and vertically mounted on the bottom plate 22. The core post 3 is used to hang the wrapping tape roll 1, and is coaxially arranged with the core hole. The limiting curtain 4 is used to block at least part of the opening 24. The limiting curtain 4 includes a root 41 and a free end 42 arranged opposite each other. The root 41 is connected to the side wall of the receiving cavity 23, and the free end 42 can be bent to both sides of the opening 24 to open the opening 24.

[0026] The limiting curtain 4 has a certain degree of elasticity, allowing it to automatically rebound after bending and promptly seal the outlet 211 to prevent the cable tape roll 1 from detaching from the receiving cavity 23. The limiting curtain 4 is made of either rubber or polyurethane, and its hardness can be adjusted by using modified rubber or other polymer materials. In use, after installing the cable tape roll 1 onto the core post 3, the tape body 11 is pulled out from the outlet 211 to perform cable wrapping. The operator can hold the side casing 21 to adjust the wrapping direction of the tape body 11. It is understood that this combined fire-retardant cable tape 100 is also suitable for wrapping optical cables or other cables requiring tape body 11. For shorter cables, a longitudinal wrapping method can be used to wrap the tape body 11 onto the cable surface. In this process, the operator does not need to frequently rotate their arm to pull out the tape body 11; they only need to hold the side casing 21 at a certain angle and pull from one end of the cable to the other, thus improving the efficiency of cable wrapping. When it is necessary to wrap the cable by wrapping, the operator does not need to frequently rotate his wrist to control the direction of the belt 11. He only needs to keep the outlet 211 in contact with the surface of the cable to complete the wrapping process, thereby improving the wrapping efficiency of the cable.

[0027] After the cable is wrapped, the remaining tape 11 is still stored in the receiving cavity 23 to reduce the impact of external dust on the adhesiveness of the tape 11. After the tape is broken, the tape 11 located at the outlet 211 can be directly glued to the vicinity of the outlet 211 to prevent the tape 11 from rolling back and sticking together, thus facilitating its use in the next operation. It should be noted that the core column 3 has a through hole in the center, which helps to save manufacturing materials and also makes it easy to use as a hanging hole to hang it on the wall or on the worker's waist for easy storage and retrieval.

[0028] According to the technical solution of this embodiment, the tape roll 1 can be installed in the receiving cavity 23 of the outer shell 2, and the tape body 11 can pass through the outlet 211 to exit the side shell 21, which facilitates the operator to tear the tape body 11. During the process of pulling out the tape body 11, since the tape roll 1 can rotate around the core column 3, the operator does not need to frequently rotate their wrist, which is conducive to the operator to quickly and continuously pull out the tape body 11. By setting the limiting curtain 4, the tape roll 1 will not fall out of the receiving cavity 23 during rotation, and the free end 42 of the limiting curtain 4 can be bent to a certain extent, so that when the tape roll 1 is used up, the operator can directly put their hand into the receiving cavity 23 and take out the core, and then directly press the new tape roll 1 into the receiving cavity 23. After the limiting curtain 4 springs back, it can automatically seal the new tape roll 1 in the receiving cavity 23, which helps to improve the replacement efficiency of the tape roll 1.

[0029] In one embodiment of this utility model, please refer to Figure 1The accommodating cavity 23 is cylindrical in shape, and multiple limiting curtains 4 are arranged in a circumferential array on the side wall of the accommodating cavity 23. Specifically, in this embodiment, the limiting curtains 4 are triangular in shape, and multiple limiting curtains 4 are arranged in a circumferential array on the side wall of the accommodating cavity 23 to achieve the function of omnidirectionally blocking the opening 24. The triangular shape design has the advantage that, on the one hand, the bending resistance of the limiting curtains 4 gradually decreases along the direction gradually approaching the free end 42, in order to accommodate the gradually decreasing thickness of the wrapping tape roll 1. That is to say, when the wrapping tape roll 1 is thicker, a larger resistance is required to stably install the wrapping tape roll 1 in the accommodating cavity 23, and as the thickness of the wrapping tape roll 1 gradually decreases, the resistance required to prevent the wrapping tape roll 1 from falling out of the accommodating cavity 23 also gradually decreases. Therefore, the triangular limiting curtain design can adapt to this change process, so as to achieve the purpose of stably installing the wrapping tape roll 1 in the accommodating cavity 23, and also to save the material used to manufacture the limiting curtains 4. On the other hand, the use of a triangular limiting curtain 4 reduces the resistance required when the free end 42 bends, making it easier for the operator to reach into the receiving cavity 23 to retrieve the used packing tape roll 1, which helps to reduce the difficulty of the operator retrieving the packing tape roll 1.

[0030] In one embodiment of this utility model, please refer to Figure 1 , Figure 4 and Figure 5The combined fire-retardant tape 100 also includes a cutting assembly 5, which includes a push button 51, a slider 52, and a blade 53. The side housing 21 has a slide 212 and a limiting port 213. The limiting port 213 communicates with the slide 212 and is located on the side of the side housing 21 away from the receiving cavity 23. The slide 212 communicates with the outlet 211. The slider 52 is slidably mounted on the slide 212. The blade 53 is mounted on the end of the slider 52 near the outlet 211. The push button 51 is mounted on the side of the slider 52 away from the receiving cavity 23 and passes through the limiting port 213. The push button 51 is used to drive the slider 52 to slide so that the blade 53 extends into the outlet 211. The push button 51 and the slider 52 are integrally formed to avoid relative displacement between them. With this setup, once the cable wrapping operation is complete, simply pressing the push button 51 and sliding it towards the outlet 211 will insert the blade 53 into the outlet 211, allowing the tape 11 to contact the blade 53 and thus easily cut it. This eliminates the need for the operator to carry a cutting tool to cut the tape 11, improving cutting efficiency. Furthermore, when cutting the tape 11 is not required, the operator can control the push button 51 to retract the blade 53 into the slide rail 212, preventing the blade 53 from cutting them. It should be noted that the slide rail 212 is shaped to match the slider 52; within the slide rail 212, the slider 52 can only slide towards or away from the outlet 211, and cannot slide to other sides. In addition, the limiting port 213 is used to limit the position of the push button 51, so that the push button 51 can only slide within the range of the limiting port 213, thereby making it easier to control the length of the blade 53 extending into the outlet 211 and avoiding the blade 53 extending into the outlet 211 for too long, which would affect the cutting process of the belt body 11.

[0031] In one embodiment of this utility model, please refer to Figure 5 The cutting assembly 5 also includes a tension spring 54, with its two ends connected to the end of the slider 52 away from the outlet 211 and the end of the slide rail 212 away from the outlet 211, respectively. The tension spring 54 can pull the slider 52 to slide. The tension spring 54 can continuously apply a force to the slider 52 away from the outlet 211, thereby keeping the blade 53 continuously contained in the slide rail 212 when the push button 51 is not pushed by the operator, which helps to improve the safety of the cutting assembly 5. In addition, after the cutting of the tape body 11 is completed, when the operator releases the push button 51, the tension spring 54 can also directly pull the slider 52 to reset, causing the blade 53 to automatically retract into the slide rail 212, thereby preventing the blade 53 from being continuously exposed in the outlet 211 due to the operator forgetting to reset the push button 51.

[0032] In one embodiment of this utility model, a slot is provided at one end of the slider 52 near the outlet 211, and the blade 53 includes a retaining strip that engages with the slot. The extending direction of the retaining strip and the slot is parallel to the direction from the opening 24 towards the base plate 22, to facilitate the disassembly and replacement of the blade 53. The length of the retaining strip and the blade 53 should be designed with the width of the outlet 211 in mind to avoid the situation where the retaining strip or the blade 53 is too long and abuts against the side wall of the outlet 211, making disassembly difficult.

[0033] In one embodiment of this utility model, the blade 53 further includes a cutting edge disposed opposite to the retaining strip. The cutting edge is used to cut the belt body 11, and the cutting edge is beveled. This reduces the contact area between the cutting edge and the belt body 11, thereby increasing the pressure applied by the cutting edge to the belt body 11, achieving a force-saving cutting effect. At the same time, the beveled design allows the cutting edge to cut from one side of the belt body 11 to the other, which helps to ensure a neat cut.

[0034] In one embodiment of this utility model, please refer to Figure 4 Multiple anti-slip grooves 511 are provided on the side of the push button 51 away from the slider 52. The protective grooves are used to increase the friction between the push button 51 and the user's hand, preventing the fingers from slipping on the push button 51 due to sweaty hands in high temperatures. The textured design of the anti-slip grooves 511 also helps to improve the recognizability of the push button 51, allowing the operator to locate the push button 51 blindly, thus improving the user experience.

[0035] In one embodiment of this utility model, please refer to Figure 6 The tape body 11 includes a mechanical protective layer 111, an expansion layer 112, a base layer 113, and an adhesive layer 114 arranged sequentially. The base layer 113 includes a skeleton and silicone filler, with the silicone filler covering the skeleton. The skeleton includes glass fiber and conductive fiber. In this embodiment, the skeleton has a mesh structure, and the adhesive layer 114 is epoxy resin, which is used to bond the tape body 11 to the cable surface to prevent the tape body 11 from falling off.

[0036] Specifically, the skeleton is woven primarily from glass fiber, with conductive fibers embedded in it at a 1:5 warp ratio. This means that a conductive fiber is woven in every five glass fibers along the warp. The type of conductive fiber can be selected based on the type of loom. The surface of the conductive fibers is coated with a 5% silane coupling agent and dried at 60°C for 2 minutes to enhance chemical bonding with the silicone. After the skeleton is completed, it is immersed in an impregnation solution, which can be composed of 70% liquid silicone, 25% flame retardant aluminum hydroxide, and 5% crosslinking agent by mass. After impregnation, it is cured at high temperature to form the base layer 113. The base layer 113 formed through this process possesses both a certain degree of toughness, allowing it to serve as the base for the expansion layer 112 and the adhesive layer 114, and antistatic properties.

[0037] In this embodiment, the material of the expanded layer 112 is either vermiculite-graphite or zinc borate. Taking vermiculite-graphite as an example, its base material is water-based acrylic resin, with 50% vermiculite (calcined and expanded type) and 20% expandable graphite (80 mesh particle size) added, and 5% ammonium polyphosphate (APP) added as a synergist. After mixing, it is coated on the top surface of the base layer 113 and cured.

[0038] In one embodiment of this utility model, the mechanical protective layer 111 includes one of a polyurethane coating and a polyamide coating. Both the polyurethane coating and the polyamide coating have strong wear resistance and a certain degree of toughness, making them suitable for applications where the tape 11 is wrapped around a cable.

[0039] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A composite fire-retardant wrapping tape, characterized in that, include: A wrapping tape roll includes a core and a tape body layered and wound around the core, wherein the core has core holes; The outer shell includes a side shell and a bottom plate, the side shell and the bottom plate forming a receiving cavity, an opening communicating with the receiving cavity is formed on the side opposite to the bottom plate, and the side shell has an outlet for the belt to pass through; The core post is cylindrical and vertically mounted on the base plate. The core post is used to hang the tape roll, and the core post is coaxially arranged with the core hole. A limiting curtain is used to block at least part of the opening. The limiting curtain includes a root portion and a free end disposed opposite to each other. The root portion is connected to the side wall of the receiving cavity, and the free end is capable of bending to both sides of the opening to open the opening.

2. The combined fire-retardant wrapping tape as described in claim 1, characterized in that, The accommodating cavity is cylindrical in shape, and there are multiple limiting curtains arranged in a circumferential array on the side wall of the accommodating cavity.

3. The combined fire-retardant wrapping tape as described in claim 1, characterized in that, The combined fire-retardant strap also includes a cutting assembly, which includes a push button, a slider, and a blade. The side enclosure has a slide rail and a limiting port. The limiting port is connected to the slide rail and is located on the side of the side enclosure away from the receiving cavity. The slide rail is connected to the outlet. The slider is slidably mounted on the slide rail, the blade is mounted on the end of the slider near the outlet, the push button is mounted on the side of the slider away from the receiving cavity, and the push button passes through the limiting port. The push button is used to drive the slider to slide so that the blade extends into the outlet.

4. The combined fire-retardant wrapping tape as described in claim 3, characterized in that, The cutting assembly also includes a tension spring, the two ends of which are respectively connected to the end of the slider away from the outlet and the end of the slide away from the outlet, and the tension spring is capable of pulling the slider to slide.

5. The combined fire-retardant wrapping tape as described in claim 3, characterized in that, The slider has a slot at one end near the outlet, and the blade includes a retaining strip that engages with the slot.

6. The combined fire-retardant wrapping tape as described in claim 5, characterized in that, The blade also includes a cutting edge disposed opposite to the card strip, the cutting edge being used to cut the belt body, and the cutting edge being beveled.

7. The combined fire-retardant wrapping tape as described in claim 3, characterized in that, The push button has multiple anti-slip grooves on the side away from the slider.

8. The combined fire-retardant wrapping tape as described in any one of claims 1 to 7, characterized in that, The belt includes a mechanical protective layer, an expansion layer, a base layer and an adhesive layer arranged in sequence. The base layer includes a skeleton and a silicone filler. The silicone filler covers the skeleton. The skeleton includes glass fiber and conductive fiber.

9. The combined fire-retardant wrapping tape as described in claim 8, characterized in that, The skeleton has a mesh structure.

10. The combined fire-retardant wrapping tape as described in claim 8, characterized in that, The mechanical protective layer includes one of a polyurethane coating and a polyamide coating.

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