Fireproof sealing strip and manufacturing method

Abstract

The invention provides a fireproof sealing strip and a manufacturing method thereof, and relates to the technical field of sealing strips, the fireproof sealing strip comprises a rectangular body, and because the body is rectangular, when a fireproof door is closed, the rectangular body is extruded, deformation of the body is increased, the contact area between the body and a door frame and the contact area between the body and a door leaf are increased, and the sealing effect is improved. An inner foaming layer and an outer fireproof layer are arranged on the body from inside to outside, exhaust holes are formed between the inner foaming layer and the outer fireproof layer, the exhaust holes are formed in the positions of rectangular corners, and the exhaust holes penetrate through the body in the length direction. Gas exists when the plane on the inner foaming layer makes contact with the inner side face of the outer fireproof layer, and when people conduct processing, due to the fact that sharp water corners are arranged on the periphery of a selected core mold, exhaust holes are formed in the positions of the water corners when materials of the outer fireproof layer flow, and it is guaranteed that the inner foaming layer is connected with the outer fireproof layer.

Description

Technical Field

[0001] The invention relates to the technical field of sealing strips, and in particular to a fireproof sealing strip and a manufacturing method thereof. Background Art

[0002] Sealing strip products are widely used in the market at this stage. The requirements are not high under normal working conditions. They mainly play the role of dustproof and waterproof sealing performance. However, they may fail to function in special environments, such as high temperature and high pressure environments; and even worse use scenarios with flames will cause sealing strip products to fail.

[0003] Among the existing technologies, most are round or irregular in shape, which results in a low fire prevention effect. In more severe usage scenarios with flames, the sealing strip products will fail. Summary of the invention

[0004] The purpose of the present invention is to provide a fireproof sealing strip and a manufacturing method to solve the technical problem that the existing fireproof sealing strips in the prior art have relatively low fireproof effects. The preferred technical solutions among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention provides a fireproof sealing strip, comprising a main body arranged in a rectangular shape, wherein the main body is provided with an inner foaming layer and an outer fireproofing layer from the inside to the outside, and an exhaust hole is provided between the inner foaming layer and the outer fireproofing layer, and the exhaust hole is arranged at the corner of the rectangle, and the exhaust hole runs through the length of the main body.

[0007] Preferably, the inner foaming layer is a silica gel foaming layer.

[0008] Preferably, the outer fireproof layer is configured as a ceramic silicone layer.

[0009] Preferably, the thickness of the outer fireproof layer is 1-3 mm.

[0010] Preferably, the inner foam layer and the outer fireproof layer are combined together by coating and co-extrusion, and the two layers are welded and fixed, and an adhesive layer is arranged on the periphery of the inner foam layer.

[0011] The present application document also provides a method for preparing a fireproof sealing strip, which comprises:

[0012] S1, making a rectangular inner foaming layer, and applying an adhesive layer on the outer periphery after forming;

[0013] S2. Select a core mold, wherein the core mold is provided with an inner layer channel, and the outer layer of the core mold and the inner side of the mold form an outer layer channel; the inner layer channel is connected to the foamed silicone to form a silicone foaming layer, and the outer layer channel is connected to the ceramic silicone to form a ceramic silicone layer.

[0014] Preferably, the position periphery of the outlet of the core mold is set as a rectangular segment.

[0015] Preferably, the core mold further includes a tapered section, and a dividing line corresponding to the rectangle is arranged on the circumferential surface of the tapered section.

[0016] Preferably, an inclined surface is provided at the core mold outlet position to reduce the distance between the inner foaming layer and the outer foaming layer.

[0017] The technical solution provided by this application document includes the following beneficial effects:

[0018] The present invention provides a fireproof sealing strip and a manufacturing method thereof, wherein the fireproof sealing strip comprises a main body arranged in a rectangular shape. In the prior art, the fireproof sealing strip is arranged in a circular shape or a special shape, which results in that when the fireproof door is closed, the contact area between the sealing strip and the door frame is relatively small, so that the fireproof effect is relatively poor. Since the main body is arranged in a rectangular shape, when the fireproof door is closed, the rectangular main body is squeezed, the deformation of the main body is increased, and the contact area between the main body and the door frame and the door leaf is increased. The main body is provided with an inner foaming layer, an outer foaming layer and an outer foaming layer from the inside to the outside. The outer fireproof layer, the inner foam layer and the outer fireproof layer are provided with exhaust holes, and the exhaust holes are arranged at the corners of the rectangle, and the exhaust holes run through the length of the main body. When the inner foam layer is connected to the outer fireproof layer, there is gas when the plane on the inner foam layer contacts the inner side of the outer fireproof layer. In this way, when people are processing, since the outer periphery of the selected core mold is provided with sharp corners, exhaust holes are formed at the corners when the outer fireproof layer material flows, so as to ensure that the inner foam layer is connected to the outer fireproof layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic structural diagram of a fireproof sealing strip provided in Embodiment 1 of the present invention;

[0021] Figure 2 is a cross-sectional view showing a fireproof sealing strip according to an exemplary embodiment;

[0022] Figure 3 is a schematic structural diagram showing a core mold according to an exemplary embodiment;

[0023] Figure 4 It is a structural schematic diagram showing a core mold installed in a mold according to an exemplary embodiment.

[0024] In the figure: 1, inner foaming layer; 2, outer fireproof layer; 3, exhaust hole; 4, conical section; 5, inclined surface; 6, rectangular section. DETAILED DESCRIPTION

[0025] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0026] This specific implementation provides a fireproof sealing strip and a manufacturing method, which solves the technical problem that the existing fireproof sealing strips in the prior art have relatively low fireproof effects.

[0027] The following is an explanation of the embodiments with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the invention described in the claims. In addition, the entire contents of the configurations shown in the following embodiments are not limited to the solutions required as the invention described in the claims.

[0028] Reference Figure 1-Figure 4 The present invention provides a fireproof sealing strip, including a main body set to be rectangular. In the prior art, the fireproof sealing strip is set to be circular or special-shaped, which results in a relatively small contact area between the sealing strip and the door frame when the fireproof door is closed, so that the fireproof effect is relatively poor. Since the main body is set to be rectangular, when the fireproof door is closed, the rectangular main body is squeezed, increasing the deformation of the main body, thereby increasing the contact area between the main body and the door frame and the door leaf. The main body is provided with an inner foaming layer 1 and an outer fireproofing layer 2 from the inside to the outside. The inner foaming layer 1 and the outer fireproofing layer 2 are provided. An exhaust hole 3 is arranged between the foam layer 1 and the outer fireproof layer 2, and the exhaust hole 3 is arranged at the corner of the rectangle, and the exhaust hole 3 runs through the length of the main body. When the inner foam layer 1 is connected to the outer fireproof layer 2, there is gas when the plane on the inner foam layer contacts the inner side of the outer fireproof layer. In this way, when people are processing, since the outer periphery of the selected core mold is provided with sharp corners, the outer fireproof layer material forms exhaust holes at the corners when it flows, so as to ensure that the inner foam layer is connected to the outer fireproof layer.

[0029] To further optimize the solution, in order to ensure that the main body has high elasticity, the inner foaming layer 1 is a silicone foaming layer. The inner layer is made of high-resilience basic flame-retardant silicone material through additives and a traditional sealing strip process. The sealing strip is soft and elastic. After special processing, it is non-toxic and odorless, and can withstand high temperature and high pressure of 200°C and multiple cooking.

[0030] Further optimization scheme, the outer fireproof layer 2 is set as a ceramic silicone layer, and the wall thickness is set at 1-3mm. Through the co-extrusion process, the outer layer of the foam sealing strip is added with a ceramic silicone layer with a wall thickness of 1-3mm. The ceramic silicone layer added by co-extrusion has a fireproof function, which can achieve 30min / 1200℃ flame combustion and play the role of outer layer flame isolation; it solves the problem that the fire inside the electrical cabinet is ignited by the combustible objects outside the cabinet.

[0031] A further optimized solution is that the inner foam layer 1 and the outer fireproof layer are combined together by coating and co-extrusion, and the two layers are fused and fixed, and an adhesive layer is arranged on the periphery of the inner foam layer 1 to facilitate the connection between the inner foam layer 1 and the outer fireproof layer 2.

[0032] The present application document also provides a method for preparing a fireproof sealing strip, which comprises:

[0033] S1. Make a rectangular inner foam layer, and apply an adhesive layer on the periphery after forming to facilitate the adhesion of the inner foam layer and the outer fireproof layer;

[0034] S2. Select a core mold, which is provided with an inner channel for the inner foaming layer to pass through. The outer layer of the core mold and the inner side of the mold form an outer channel, and the outer channel is connected to the ceramic silicone, so that the ceramic silicone is wrapped in the outer layer of the inner foaming layer to form a ceramic silicone layer.

[0035] To further optimize the solution, in order to ensure that the exhaust hole 3 can be formed, the outer periphery of the position of the outlet of the core mold is set to a rectangular section. When the fireproof material is extruded in the outer channel, it is ensured that the intersection of each plane is a diamond angle, that is, it is not easy to stack the material at the corner of the rectangle. In this way, when the fireproof material contacts the inner foaming layer 2, the air between the two contact surfaces can be discharged through the exhaust hole, which facilitates the adhesion between the outer fireproof layer 2 and the inner foaming layer 1, and avoids the problems of bulging and non-fitting due to the inability to vent.

[0036] A further optimization scheme is that the core mold also includes a conical section 4. In order to facilitate each surface to be evenly wrapped with the fireproof sealing material, a dividing line corresponding to the rectangle is arranged on the circumferential surface of the conical section 4, that is, the dividing line is in contact with the diamond edge of the rectangle, so that the fireproof sealing material can slide smoothly to each plane of the inner fireproof layer.

[0037] To further optimize the solution, in order to reduce the space between the two, an inclined surface 5 is provided at the core mold outlet to reduce the position between the inner foaming layer 1 and the outer foaming layer, thereby ensuring that the two can be tightly connected to avoid separation.

[0038] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. used herein to indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0039] In the description of this article, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0040] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

[0041] It is to be understood that the same or similar parts in the above embodiments can refer to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments. The multiple schemes provided in this application include their own basic schemes, which are independent of each other and do not restrict each other, but they can also be combined with each other without conflict to achieve multiple effects together.

[0042] Although the embodiments of the present application have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present application. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A fireproof sealing strip, characterized in that: The invention comprises a main body arranged in a rectangular shape, wherein the main body is provided with an inner foam layer (1) and an outer fireproof layer from the inside to the outside, an exhaust hole (3) is arranged between the inner foam layer (1) and the outer fireproof layer (2), and the exhaust hole (3) is arranged at a corner of the rectangle, and the exhaust hole (3) runs through the length of the main body.

2. The fireproof sealing strip according to claim 1, characterized in that: The inner foaming layer (1) is a silica gel foaming layer.

3. The fireproof sealing strip according to claim 1, characterized in that: The outer fireproof layer (2) is configured as a ceramic silica gel layer.

4. The fireproof sealing strip according to claim 1, characterized in that: The thickness of the outer fireproof layer is 1-3 mm.

5. The fireproof sealing strip according to claim 1, characterized in that: The inner foam layer (1) and the outer fireproof layer (2) are combined together by coating and co-extrusion, and the two layers are welded and fixed, and an adhesive layer is arranged on the periphery of the inner foam layer (1).

6. A method for preparing a fireproof sealing strip, characterized in that: The method for producing the fireproof sealing strip according to any one of claims 1 to 5 comprises: S1, making a rectangular inner foaming layer, and applying an adhesive layer on the outer periphery after forming; S2. Select a core mold, wherein the core mold is provided with an inner layer channel, and the outer layer of the core mold and the inner side of the mold form an outer layer channel; the inner layer channel is connected to the foamed silicone to form a silicone foaming layer, and the outer layer channel is connected to the ceramic silicone to form a ceramic silicone layer.

7. The method for preparing a fireproof sealing strip according to claim 6, characterized in that: The position periphery of the outlet of the core mold is set as a rectangular segment.

8. The method for preparing a fireproof sealing strip according to claim 6, characterized in that: The core mold also includes a tapered section (4), and a dividing line corresponding to the rectangle is arranged on the circumferential surface of the tapered section (4).

9. The method for preparing a fireproof sealing strip according to claim 6, characterized in that: An inclined surface (5) is provided at the core mold outlet to reduce the distance between the inner foaming layer (1) and the outer foaming layer.

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