Co-extrusion special-shaped optical fiber luminous body and automobile interior and exterior trim parts

Abstract

The utility model provides a co-extrusion special-shaped optical fiber illuminant and automobile interior and exterior trims, which mainly comprises a first sheath, a second sheath and at least one group of optical fiber micro-beam tubes, each optical fiber micro-beam tube is formed by extruding a plurality of optical fibers and an optical fiber protection layer, and the optical fiber protection layer wraps the optical fibers. And the optical fiber micro-beam tube, the first sheath and the second sheath are subjected to integral co-extrusion molding through a forming device. The LED light source has the advantages that the color matching of the first sheath and the second sheath is controlled, the light emitting color of the product can be realized without replacing the LED light source, and one product can meet the requirements of different light colors and the adjustment of the light emitting brightness, so that the requirements of more light emitting surfaces are met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of luminous optical fiber, specifically relates to a co-extrusion special-shaped optical fiber luminous body, forming device and automotive interior and exterior trim part, can realize two or more than two luminous effects. BACKGROUND

[0002] At present, the automotive interior and exterior trim product develops rapidly in the direction of luminous, needs to take the luminous interior and exterior trim as the carrier of improving the safety, the aesthetic appearance and the intelligent interaction ability of whole vehicle, and the luminous uniformity, the consistency of brightness and color, the flexibility and other advantages of luminous optical fiber product can satisfy the requirement of many interior and exterior trim luminous products. For some products with complex shape and limited space, the luminous optical fiber is the optimal technical choice, however, the luminous optical fiber products on the market are all once extrusion forming, only have one color, the color is single, and there is no mature double-color / multi-color luminous product, the luminous color of the luminous optical fiber product cannot be adjusted after lighting, only the color of light can be changed after changing the color of LED light source, in addition, the shape of the existing luminous optical fiber only has a circular cross section, cannot satisfy the requirement of relatively wide luminous surface, the product shape is single, and the luminous window of the luminous product using the optical fiber as the luminous carrier is limited by the requirement of such optical fiber, leading to that the use scene of the luminous optical fiber is too limited. CONTENT OF THE UTILITY MODEL

[0003] The utility model solves the technical problem that the present situation of prior art provides a co-extrusion special-shaped optical fiber luminous body, forming device and automotive interior and exterior trim part, can satisfy two or more than two color requirements, and twice or multiple extrusion can satisfy more application scene requirement, and different shapes of products can be extruded according to different installation conditions.

[0004] The utility model adopts the technical scheme that a co-extrusion special-shaped optical fiber luminous body is provided, characterized by comprising a first sheath, a second sheath and at least one group of optical fiber micro-beam tubes, the optical fiber micro-beam tube is extruded from a plurality of optical fiber filaments and an optical fiber protective layer, the optical fiber protective layer covers the plurality of optical fiber filaments, and the optical fiber micro-beam tube is integrally co-extruded with the first sheath and the second sheath.

[0005] In the co-extrusion special-shaped optical fiber luminous body, the plurality of optical fiber filaments are uniformly adhered and arranged or hinged and arranged.

[0006] In the co-extrusion special-shaped optical fiber luminous body, the optical fiber protective layer is one of POE material or nylon material. Here, the POE material is a thermoplastic elastomer that is in-situ polymerized by ethylene and octene, has a low temperature resistance of 120 DEG C, is milky white in color, soft and light-transmitting, and plays a role in protecting the optical fiber and homogenizing light. The nylon material is mainly composed of polyamide, which is a polymer composed of acyl and amine groups, has a temperature resistance of 250 DEG C, is transparent in color, soft and flexible, and plays a role in protecting the optical fiber and transmitting light.

[0007] As one of the ways, in the above-mentioned co-extrusion special-shaped optical fiber light emitting body, the first sheath and the second sheath are different colors, and the optical fiber micro-beam tube and the first sheath and the second sheath are formed by segmented double-color extrusion molding. The first sheath and the second sheath can be set to different colors according to actual needs, and the required color can be customized as needed, so that one product can meet the needs of two or more light colors.

[0008] As another way, in the above-mentioned co-extrusion special-shaped optical fiber light emitting body, the first sheath and the second sheath are the same color.

[0009] In the above-mentioned co-extrusion special-shaped optical fiber light emitting body, the first sheath and the second sheath are one of POE, PC, PMMA, PET, PVC, and PP materials.

[0010] In the above-mentioned co-extrusion special-shaped optical fiber light emitting body, the material of the optical fiber protection layer has a higher temperature resistance than the materials of the first sheath and the second sheath.

[0011] In the above-mentioned co-extrusion special-shaped optical fiber light emitting body, multiple groups of optical fiber micro-beam tubes are arranged in parallel or staggered vertically in the first sheath and the second sheath.

[0012] The present patent also provides a co-extrusion special-shaped optical fiber light emitting body forming device, characterized by comprising a beam combining mechanism, a primary extrusion mechanism, and a secondary extrusion mechanism. The primary extrusion mechanism and the secondary extrusion mechanism are arranged in segments before and after. Multiple optical fiber filaments are formed into multiple groups of optical fiber micro-beam tubes through the beam combining mechanism. After the first sheath is extruded and formed by the primary extrusion mechanism, the second sheath is extruded and formed by the secondary extrusion mechanism.

[0013] In the above-mentioned co-extrusion special-shaped optical fiber light emitting body forming device, the material temperature of the second sheath extruded by the secondary extrusion mechanism is lower than the material temperature of the first sheath extruded by the primary extrusion mechanism.

[0014] In the above-mentioned co-extrusion special-shaped optical fiber light emitting body forming device, the beam combining mechanism comprises a micro-beam tube extruder, which has an optical fiber filament inlet end and a micro-beam tube outlet end. The micro-beam tube extruder is divided into a positioning section and an extrusion section. The positioning section is divided into a guide transition part and a core positioning part. The multiple optical fiber filaments enter from the optical fiber filament inlet end, pass through the positioning section and the extrusion section, and are formed into optical fiber micro-beam tubes from the micro-beam tube outlet end.

[0015] In the molding device of the co-extrusion special-shaped optical fiber light emitting body, the primary extrusion mechanism also comprises a positioning section and an extrusion section, and has a micro-beam tube inlet end and a first sheath outlet end, wherein the positioning section is also divided into a guide transition part and a core positioning part, the optical fiber micro-beam tube enters from the micro-beam tube inlet end and is molded into the optical fiber micro-beam tube with the first sheath from the first sheath outlet end after passing through the positioning section and the extrusion section.

[0016] In the molding device of the co-extrusion special-shaped optical fiber light emitting body, the primary extrusion mechanism also comprises a positioning section and an extrusion section, and has a micro-beam tube inlet end and a first sheath outlet end, wherein the positioning section is also divided into a guide transition part and a core positioning part, the optical fiber micro-beam tube enters from the micro-beam tube inlet end and is molded into the optical fiber micro-beam tube with the first sheath from the first sheath outlet end after passing through the positioning section and the extrusion section.

[0017] An automotive interior and exterior trim part characterized by being provided with the special-shaped optical fiber light emitting body. Here, since the special-shaped optical fiber light emitting body is soft and light-transmissive, it can be installed on the automotive interior and exterior trim part to emit light, and the color matching of the first sheath and the second sheath can not only control the light emitting color but also control the light emitting brightness, thereby satisfying more light emitting surface requirements.

[0018] Compared with the prior art, the special-shaped optical fiber light emitting body has the following advantages:

[0019] 1. By controlling the color matching of the first sheath and the second sheath, the light emitting color of the product can be realized without replacing the LED light source, and one product can use different colors to realize white light / amber light / red light and other light color requirements.

[0020] 2. By controlling the thickness adjustment of the first sheath and the second sheath, the light emitting brightness of the product can be controlled without additional mold investment and LED replacement or circuit modification.

[0021] 3. Twice or multiple extrusion can meet more application scene requirements, different shapes of products can be extruded according to different installation conditions, and more light emitting surface requirements can be met.

[0022] 4. Only the die head needs to be replaced for different product shapes, the die head is low in price, the replacement cost is low, and the product process flow is simple. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the co-extrusion special-shaped optical fiber light emitting body;

[0024] Figure 2 is a schematic diagram of the molding process structure of the co-extrusion special-shaped optical fiber light emitting body;

[0025] Figure 3is a schematic diagram of a forming structure of a fiber micro-beam tube;

[0026] Figure 4 is a schematic diagram of a primary extrusion forming structure of the co-extrusion special-shaped optical fiber light emitter;

[0027] Figure 5 is a schematic diagram of a secondary extrusion forming structure of the co-extrusion special-shaped optical fiber light emitter;

[0028] Figure 6 is a schematic diagram of a beam combining mechanism. DETAILED DESCRIPTION

[0029] The following is a specific embodiment of the present application and further describes the technical scheme of the present application in combination with the drawings, but the present application is not limited to these embodiments.

[0030] In the figure, the first sheath 100; the second sheath 200; the fiber micro-beam tube 300; the fiber filament 301; the hinged fiber filament 301a; the fiber protection layer 302; the beam combining mechanism 400; the pay-off device 401; the tensioning wheel 402; the preheater 403; the automatic feeding device 404; the micro-beam tube extruder 405; the fiber filament entry end 405a; the micro-beam tube exit end 405b; the water tank 406; the traction wheel 407; the wire collecting and arranging device 408; the control screen 409; the positioning section 500; the extrusion section 600; the guide transition part 700; the wire core positioning part 800; the primary extrusion mechanism 900; the micro-beam tube entry end 900a; the first sheath exit end 900b; the secondary extrusion mechanism 1000; the first sheath entry end 1000a; the second sheath exit end 1000b.

[0031] As shown in Figure 1 , the co-extrusion special-shaped optical fiber light emitter includes the first sheath 100, the second sheath 200, and at least one group of fiber micro-beam tubes 300, and in the present patent, the fiber micro-beam tube 300 is integrally co-extruded with the first sheath 100 and the second sheath 200, here the first sheath 100 and the second sheath 200 can be different colors or the same color, and the color can be customized according to the required light transmission requirements, so that by controlling the color matching of the first sheath 100 and the second sheath 200, the product light emitting color can be realized, here the first sheath 100 and the second sheath 200 can be one of POE, PC, PMMA, PET, PVC, PP, or PUR materials, in the present embodiment, the first sheath 100 and the second sheath 200 are both made of POE material, which is soft and can transmit light, and plays a role in protecting the optical fiber and uniform light. The co-extrusion special-shaped optical fiber light emitter can also be used after co-extrusion molding, embedded injection molding with other components, or separately installed.

[0032] As shown in Figure 3As shown, in addition to the whole co-extrusion profile fiber light emitting body for manufacturing, the patent also sets the forming device, mainly including the beam combination mechanism 400, the first extrusion mechanism 900 and the second extrusion mechanism 1000, the first extrusion mechanism 900 and the second extrusion mechanism 1000 are arranged in front and back sections, a plurality of optical fiber filaments 301 are formed into a plurality of groups of optical fiber micro-beam tubes 300 through the beam combination mechanism 400, and the plurality of groups of optical fiber micro-beam tubes 300 are extruded into the first sheath 100 through the first extrusion mechanism 900 and then are extruded into the second sheath 200 through the second extrusion mechanism 1000.

[0033] Specifically, the optical fiber micro-beam tube 300 is extruded by a plurality of optical fiber filaments 301 and an optical fiber protective layer 302, and the optical fiber protective layer 302 covers the plurality of optical fiber filaments 301. Here, in order to meet the light transmission requirement, the optical fiber protective layer 302 is one of POE material or nylon material. Here, the POE material is a thermoplastic elastomer realized by in-situ polymerization of ethylene and octene, with a low temperature resistance of 120°C, a milky white color, soft and light-transmitting, and plays a role in protecting the optical fiber and uniform light. The main component of the nylon material is polyamide, which is a polymer composed of acyl and amine groups, with a temperature resistance of 250°C, a transparent color, soft and tough, and plays a role in protecting the optical fiber and light transmission. The diameter of the optical fiber filament 301 can be determined according to the overall brightness requirement. The higher the brightness requirement, the smaller the diameter of the optical fiber filament 301. In this patent, the sheath and the optical fiber protective layer can be combined for selection. The requirement for selection is that the temperature resistance of the optical fiber protective layer is greater than that of the first sheath and the second sheath. This is because the first sheath 100 and the second sheath 200 are extruded later, which needs to prevent damage to the optical fiber protective layer. Therefore, in this embodiment, the nylon material is preferred. This is because the nylon material not only can resist high temperature, but also can meet the soft and light-transmitting performance. In order to realize various light emitting requirements, the plurality of groups of optical fiber micro-beam tubes 300 are arranged in parallel or staggered up and down in the first sheath 100 and the second sheath 200. Here, the plurality of groups of optical fiber micro-beam tubes 300 can be arranged in parallel or staggered up and down in one layer or multiple layers.

[0034] In this patent, the optical fiber micro-beam tube 300 is mainly completed through the beam combination mechanism 400, like Figure 6As shown, the beam combining mechanism 400 has a wire feeding device 401, a tensioning wheel 402, a preheater 403, an automatic feeding device 404, a micro-beam tube extruder 405, a water tank 406, a traction wheel 407, a wire collecting device 408, and a control screen 409. Before the optical fiber filaments 301 are positioned in the micro-beam tube extruder 405, the traction force and the rotation speed of the rotation mechanism are reasonably controlled. The rotation mechanism can be added to the wire feeding device 401. Assuming that there are 10 optical fiber filaments 301 in a single micro-beam tube, 10 wire reels are placed in the wire feeding device 401, and the entire wire feeding device 401 can rotate around the axis. In order to ensure more accurate positioning of the optical fiber micro-beam tube 300 in the mold, the multiple optical fiber filaments 301 are uniformly attached and arranged or hinged together to form a hinged optical fiber filament 301a. In the embodiment, the multiple optical fiber filaments 301 are mainly hinged together to form a hinged optical fiber filament 301a by the rotation mechanism when reaching the positioning plate. The shape is basically consistent and approximately circular, ensuring more accurate positioning of the optical fiber bundle in the mold. This effectively reduces the shaking of the wire core and the movement of the inner core in the mold during the traction process, ensuring the roundness of the optical fiber micro-beam tube 300 formed by the first beam combining of the optical fiber filaments 301. The roundness of the optical fiber micro-beam tube 300 has a critical impact on the subsequent positioning of the micro-beam tube in the mold and its relative position in the sheath. Ultimately, it will affect the appearance of the product and thus the lighting effect. In this patent, the micro-beam tube extruder 405 has an optical fiber filament inlet end 405a and a micro-beam tube outlet end 405b. The micro-beam tube extruder 405 is divided into a positioning section 500 and an extrusion section 600. The positioning section 500 is divided into a guide transition part 700 and a wire core positioning part 800. The front half is the guide transition part 700, and the rear half is the wire core positioning part 800. By controlling the positioning gap value between the wire core of the optical fiber filament 301 and the mold, which is recommended to be 0.1 mm in this embodiment, the traction speed and the actual production can be adjusted. In this way, the multiple optical fiber filaments 301 enter from the optical fiber filament inlet end 405a, pass through the positioning section 500 and the extrusion section 600, and are formed into the optical fiber micro-beam tube 300 from the micro-beam tube outlet end 405b.

[0035] In this patent, one-time extrusion molding or two-time extrusion molding can be used. This patent mainly uses segmented double-color extrusion molding. Double-color extrusion molding refers to a product with two different colors that is processed by an extrusion device through different flow channels. During the molding process, the two materials form a whole during the extrusion process by using a mold. The double-color product is divided into two extrusion processes, a total of two sets of die, namely, a one-time extrusion mechanism 900 and a two-time extrusion mechanism 1000. Different colors are provided by different component materials through two-time extrusion, and the material temperature of the second sheath 200 extruded by the two-time extrusion mechanism 1000 needs to be lower than the material temperature of the first sheath 100 extruded by the one-time extrusion mechanism 900. In this embodiment, the two-time extrusion material temperature is 40-50℃ lower than the one-time extrusion material temperature.

[0036] Specifically, as shown in Figure 4 The primary extrusion mechanism 900 also includes a positioning section 500 and an extrusion section 600, and has a micro-beam tube inlet end 900a and a first sheath outlet end 900b, wherein the positioning section 500 is also divided into a guide transition part 700 and a core positioning part 800, the optical fiber micro-beam tube 300 enters from the micro-beam tube inlet end 900a and is formed into the optical fiber micro-beam tube 300 with the first sheath 100 from the first sheath outlet end 900b after passing through the positioning section 500 and the extrusion section 600, and the guide transition part 700 is mainly to ensure the guide position of the optical fiber micro-beam tube 300, and the core positioning part 800 is used for extrusion positioning, and the first sheath 100 is selected to have a colored plastic raw material component, such as adding a color paste of a specific color in the POE material, and after melting and plasticizing by an extruder, the first sheath 100 is integrally co-extruded with the optical fiber micro-beam tube 300 to form the optical fiber micro-beam tube 300 with the color of the first sheath 100, and the first sheath 100 can be extruded into various shapes, such as wide type, round type and various special shapes.

[0037] As shown in Figure 5 After the primary extrusion is completed, the secondary extrusion is performed, and the secondary extrusion mechanism 1000 also includes a positioning section 500 and an extrusion section 600, and has a first sheath inlet end 1000a and a second sheath outlet end 1000b, wherein the positioning section 500 is also divided into a guide transition part 700 and a core positioning part 800, the optical fiber micro-beam tube 300 with the first sheath 100 enters from the first sheath inlet end 1000a and is formed into a finished optical fiber illuminator from the second sheath outlet end 1000b after passing through the positioning section 500 and the extrusion section 600, and the second sheath 200 is selected to have another color of plastic raw material component, and a color paste of a specific color can also be added according to actual needs, and after melting and plasticizing by an extruder, the two materials converge under the action of a flow shuttle, and are cooled and solidified in a mold cavity, and finally form the optical fiber illuminator finished product with two colors, and the second sheath 200 can also be extruded into various shapes, such as wide type, round type and various special shapes, so as to form a special-shaped optical fiber illuminator, and different product shapes only need to replace the die, and the die is low in price and low in replacement cost.

[0038] The special-shaped optical fiber illuminator manufactured through the above process can be installed on the interior and exterior trim parts of the automobile for use, and the color matching of the first sheath 100 and the second sheath 200 can realize that the product light-emitting color does not need to replace the LED light source, one product can use different colors to meet the needs, and meet the light-emitting needs of various automobile interior and exterior trim parts.

[0039] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, as long as the combination of the technical features does not exist in contradiction, it shall be considered as the scope of the description.

[0040] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, under the premise of not departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model.

Claims

1. A co-extruded profiled optical fiber light emitter, characterized in that, The application relates to a special-shaped optical fiber light-emitting body, which comprises a first sheath, a second sheath and at least one group of optical fiber micro-beam tubes, the optical fiber micro-beam tubes are extruded from a plurality of optical fiber filaments and an optical fiber protective layer, the optical fiber protective layer covers the plurality of optical fiber filaments, and the optical fiber micro-beam tubes are integrally co-extruded with the first sheath and the second sheath.

2. A co-extruded profiled optical fiber light emitter as claimed in claim 1, characterized in that, The plurality of optical fiber filaments are uniformly adhered and arranged or hinged and arranged into a strand.

3. A co-extruded profiled optical fiber light emitter as claimed in claim 1, characterized in that, The optical fiber protective layer is one of POE material or nylon material.

4. A co-extruded profiled optical fiber light emitter as claimed in claim 1, characterized in that, The first sheath and the second sheath are different in color, and the optical fiber micro-beam tubes are segmentally double-color extrusion molded with the first sheath and the second sheath.

5. A co-extruded profiled optical fiber light emitter as claimed in claim 1, characterized in that, The first sheath and the second sheath are the same in color.

6. A co-extruded profiled optical fiber light emitter according to claim 4 or 5, characterized in that, The first sheath and the second sheath are one of POE, PC, PMMA, PET, PVC or PP material.

7. A co-extruded profiled optical fiber light emitter as claimed in claim 6, characterized in that, The material of the optical fiber protective layer is higher in temperature resistance than the material of the first sheath and the second sheath.

8. A co-extruded profiled optical fiber light emitter as claimed in claim 1, characterized in that, The plurality of groups of optical fiber micro-beam tubes are arranged in parallel at intervals or arranged in up-down staggered mode at intervals in the first sheath and the second sheath.

9. An automotive interior and exterior trim part characterized by, The special-shaped optical fiber light-emitting body is installed.

Images