Opto-electric hybrid cable extrusion die

Abstract

The application relates to the field of molds, in particular to a photoelectric hybrid cable extrusion mold, which comprises a first mold, a second mold and a third mold connected in sequence, the first mold is provided with a first wire inlet hole, the second mold is provided with a first extrusion outlet, a cooling cavity, a drying cavity and a second wire inlet hole communicated in sequence, the third mold is provided with a second extrusion outlet, the second mold is further provided with a fiber inclined inlet hole communicated with the second wire inlet hole; a gap between the first mold and the second mold forms a first flow channel, the second mold is provided with a first feeding port communicated with the first flow channel; a gap between the second mold and the third mold forms a second flow channel, the third mold is provided with a second feeding port communicated with the second flow channel, and the application has the advantages that the two steps of cable extrusion and photoelectric hybrid cable extrusion are combined into one, and the production steps are simplified.

Description

Technical Field

[0001] This invention relates to the field of molds, and in particular to an extrusion mold for a hybrid optoelectronic cable. Background Technology

[0002] Optical fiber has a large bandwidth and a long transmission distance, but it cannot supply power; while cable can supply power, but its bandwidth and transmission distance are not good. With the development of society, in order to solve the problem of providing power to equipment while transmitting signals over long distances, people have proposed the optical-electric hybrid cable. The optical-electric hybrid cable combines the advantages of optical fiber and cable and is being used more and more.

[0003] In the manufacturing process of hybrid optical and fiber optic cables, the conductors are first extruded and coated to form finished cables, and then the finished cables and optical fibers are extruded and coated together to form hybrid optical and fiber optic cables. The two steps are carried out independently. After the finished cables are made, they need to be wound up, and when producing hybrid optical and fiber optic cables, they need to be unwound, which affects production efficiency. In addition, the two steps use separate equipment, which occupies a large space. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an extrusion mold for a hybrid optoelectronic cable.

[0005] The objective of this invention is achieved through the following technical solution: an extrusion mold for a hybrid optical-electric cable, comprising a first mold, a second mold, and a third mold connected in sequence, wherein the first mold is provided with a first inlet hole, the second mold is provided with a first extrusion port, a cooling chamber, a drying chamber, and a second inlet hole connected in sequence, the third mold is provided with a second extrusion port, and the second mold is also provided with an optical fiber oblique inlet, the optical fiber oblique inlet being connected to the second inlet hole;

[0006] A first conical portion is provided at the end where the first mold connects to the second mold, and a first concave portion is provided at the end where the second mold connects to the first mold. The gap between the first conical portion and the first concave portion forms a first flow channel. A first feed port is provided on the second mold, and the first feed port communicates with the first flow channel. A second conical portion is provided at the end where the second mold connects to the third mold, and a second concave portion is provided at the end where the third mold connects to the second mold. The gap between the second conical portion and the second concave portion forms a second flow channel. A second feed port is provided on the third mold, and the second feed port communicates with the second flow channel. By setting the extrusion of the cable and the extrusion of the optoelectronic hybrid cable in the same mold, the production steps are simplified and production efficiency is improved.

[0007] In some embodiments, the second module includes a first unit and a second unit, the first unit being connected to the first module, and the second unit being connected to the third module. The first unit and the second unit are connected by a plurality of connecting arms arranged in a circumferential array, and a wrapping mechanism is provided between the first unit and the second unit. The wrapping mechanism in the second module wraps the optical fiber and cable before secondary extrusion to prevent loosening.

[0008] In some embodiments, the wrapping mechanism includes a wrapping motor, a wrapping ring, a wrapping disc, and a material tray mounting post. The two ends of the wrapping ring are rotatably connected to the first unit and the second unit, respectively. The wrapping motor is embedded in the second unit near the first unit. A gear is connected to the power output end of the wrapping motor. Gear teeth are provided on the outer wall of one end of the wrapping ring, and the gear meshes with the gear teeth. The wrapping disc is obliquely disposed on the wrapping ring. The material tray mounting post is disposed on the wrapping disc and is used to mount the material strip. The wrapping ring has a material strip inlet for the material strip to pass through. By setting the wrapping mechanism in the second mold, the wrapping layer can be wrapped around the optical fiber and cable before extrusion of the optoelectronic hybrid cable, making the wire cylindrical and preventing the cable from becoming loose.

[0009] In some embodiments, the material tray mounting post includes a mounting base, a mounting post, a spring, a movable pin, and a limiting cover. The mounting base is fixedly connected to the wrapping reel, and the mounting base has a mounting cavity. The mounting post is slidably disposed in the mounting cavity, and one end of the mounting post has a limiting portion. The limiting cover is disposed at one end of the mounting base, and one end of the mounting post passes through the limiting cover. The spring is sleeved on the mounting post, and both ends of the spring abut against the limiting portion and the limiting cover, respectively. The end of the mounting post passing through the limiting cover has a movable pin mounting groove, and the movable pin is rotatably disposed in the movable pin mounting groove. By providing the material tray mounting post, the material reel can be firmly installed on the wrapping reel, preventing the material reel from falling off when the wrapping ring rotates.

[0010] In some embodiments, the feed strip inlet edge is a smooth curved surface to prevent feed strip breakage.

[0011] In some embodiments, at least two first inlet holes are provided, and correspondingly, at least two first extrusion ports are also provided, with the number corresponding to the number of the first inlet holes. Providing at least two first inlet holes and two extrusion ports ensures that the die can extrude at least positive and negative cables.

[0012] In some embodiments, a transition hole is provided between the cooling chamber and the drying chamber, the transition hole connecting the cooling chamber and the drying chamber, and a rubber ring is provided at one end of the transition hole connecting to the cooling chamber. The rubber ring can scrape off water droplets on the cable, facilitating rapid drying of the cable when it enters the drying chamber.

[0013] In some embodiments, the cross-sectional area of ​​both the first and second flow channels decreases along the flow direction. This provides a pressurizing effect during the extrusion of the coating material.

[0014] In some embodiments, the front section of the second inlet hole is disposed on the first unit, and the rear section of the second inlet hole is disposed on the second unit. The junction of the optical fiber oblique inlet and the front section of the second inlet hole is a smooth curved surface. This prevents the optical fiber from being broken at angle changes.

[0015] The present invention has the following advantages:

[0016] 1. By simultaneously setting a first flow channel and a second flow channel in the mold, the cable is extruded through the first flow channel. After extrusion, the cable passes through the cooling chamber, where cooling water is rapidly introduced from top to bottom to cool the cable quickly. After cooling, the cable enters the drying chamber, where hot air is introduced from bottom to top to dry the cable. After drying, the cable and optical fiber are combined and then extruded again to form a hybrid optical-electric cable, simplifying the production process.

[0017] 2. By setting a wrapping mechanism in the second module, the fiber and cable can be wrapped after they are joined, so that the fiber and cable are cylindrical. After wrapping, extrusion is performed to prevent the cable and fiber from becoming loose during extrusion. Attached Figure Description

[0018] Figure 1 This is a side cross-sectional view of the extrusion mold for the optoelectronic hybrid cable of the present invention.

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a top cross-sectional view of the extrusion mold for the optoelectronic hybrid cable of the present invention.

[0021] Figure 4 for Figure 3 Enlarged view at point B in the middle;

[0022] Figure 5 This is a cross-sectional view of the wrapping mechanism of the present invention;

[0023] Figure 6 for Figure 5 Enlarged view of point C.

[0024] In the diagram: 1. First mold; 11. First inlet hole; 12. First cone; 2. Second mold; 21. First unit; 211. First recess; 212. Cooling chamber; 213. Drying chamber; 214. First feed inlet; 215. First extrusion port; 216. Fiber optic oblique inlet; 217. First boss; 218. Transition hole; 219. Rubber ring; 22. Second unit; 221. Second inlet hole; 222. Second boss; 223. Connecting arm; 224. Second cone; 3. Third mold; 31. Second extrusion port; 32. Second feed port; 33. Second recess; 4. First flow channel; 5. Second flow channel; 61. Wrapping ring; 611. Material strip inlet; 612. Gear tooth; 62. Wrapping motor; 63. Bearing; 64. Gear; 65. Wrapping disc; 66. Material disc mounting post; 661. Mounting base; 662. Mounting post; 663. Spring; 664. Limiting cover; 665. Movable pin; 6621. Limiting part; 6622. Movable pin mounting groove. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0027] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0029] like Figure 1-6 As shown, an extrusion mold for a hybrid optical and electrical cable includes a first mold 1, a second mold 2, and a third mold 3 connected in sequence. The first mold 1 is provided with a first inlet hole 11. The second mold 2 is provided with a first extrusion port 215, a cooling chamber 212, a drying chamber 213, and a second inlet hole 221 connected in sequence. The third mold 3 is provided with a second extrusion port 31. The second mold 2 is also provided with an optical fiber oblique inlet 216, which is connected to the second inlet hole 221.

[0030] A first conical portion 12 is provided at the end where the first mold 1 connects to the second mold 2, and a first recess 211 is provided at the end where the second mold 2 connects to the first mold 1. The gap between the first conical portion 12 and the first recess 211 forms a first flow channel 4. A first feed port 214 is provided on the second mold 2, and the first feed port 214 communicates with the first flow channel 4. A second conical portion 224 is provided at the end where the second mold 2 connects to the third mold 3, and a second recess 33 is provided at the end where the third mold 3 connects to the second mold 2. The gap between the second conical portion 224 and the second recess 33 forms a second flow channel 5. A second feed port 32 is provided on the third mold 3, and the second feed port 32 communicates with the second flow channel 5. In this embodiment, both the first feed port 214 and the second feed port 32 are connected to the extrusion port of the extruder. The first mold 1 and the second mold 2 are connected by a flange, and the second mold 2 and the third mold are connected by a flange. To accelerate cooling and facilitate processing, the cooling chamber 212 is designed as a long, narrow, straight-through structure, allowing cooling water to flow at a high velocity and accelerating cable cooling. The drying chamber 213 is also a long, narrow, straight-through structure, with a large volume of warm air introduced at its bottom inlet to quickly dry the cable. When using the mold, the conductor enters the first mold 1 through the first inlet port. The first feed port 214 introduces coating material through an extruder to coat the conductor. After coating, the conductor is extruded through the first extrusion port 215, then enters the second inlet port 221, merges with the optical fiber, and is extruded again through the second extrusion port 31, completing all steps. This invention integrates the previously multi-step process of producing hybrid optoelectronic cables into a single mold, simplifying the production process, reducing equipment size, and improving production efficiency.

[0031] Furthermore, the second module 2 is configured as a split structure, which includes a first unit 21 and a second unit 22. The first unit 21 is connected to the first module 1, and the second unit 22 is connected to the third module 3. The first unit 21 and the second unit 22 are connected by a plurality of connecting arms 223 arranged in a circumferential array. A wrapping mechanism is provided between the first unit 21 and the second unit 22. In this embodiment, the wrapping mechanism is used to wrap and wind the optical fiber and cable with material tape to facilitate a second wrapping. Setting the second module 2 as a split structure facilitates the setting of the wrapping mechanism between the first unit 21 and the second unit 22.

[0032] Furthermore, the wrapping mechanism includes a wrapping motor 62, a wrapping ring 61, a wrapping disc 65, and a material tray mounting post 66. The two ends of the wrapping ring 61 are rotatably connected to the first unit 21 and the second unit 22, respectively. The wrapping motor 62 is embedded in the second unit 22 near the first unit 21. A gear 64 is connected to the power output end of the wrapping motor 62. Gear teeth 612 are provided on the outer wall of one end of the wrapping ring 61, and the gear 64 meshes with the gear teeth 612. The wrapping disc 65 is obliquely disposed on the wrapping ring 61. The material tray mounting post 66 is disposed on the wrapping disc 65 for mounting the material strip. The wrapping ring 61 has a material strip inlet 611 for the material strip to pass through. In this embodiment, a motor mounting cavity is provided on the second unit 22 near the first unit 21, and the wrapping motor 62 is embedded in the motor mounting cavity. Both ends of the wrapping ring 61 are equipped with rolling bearings 63. The wrapping ring 61 is rotatably connected to the first unit 21 and the second unit 22 via the rolling bearings 63 and the bosses. The material tape inlet 611 and the wrapping disc 65 are both angled to facilitate the formation of a wrapping angle during wrapping. The wire and optical fiber converge in the first unit 21. When using the mold, after the conductor and the optical fiber are joined, the wrapping motor 62 is started through the wrapping mechanism, and the wrapping ring 61 is driven to rotate through the gear 64. After the wrapping ring 61 rotates, the material strip is wrapped around the conductor and the optical fiber, so that the conductor and the optical fiber form a tight column shape. This makes it easier to prevent the conductor and the optical fiber from spreading out during secondary wrapping and subsequent use. In addition to the optical fiber, the optical fiber oblique inlet 216 can also be filled with filler wire such as cotton thread along with the optical fiber, so that the wrapped conductor and optical fiber are fuller, reducing the amount of wrapping material used during secondary extrusion wrapping, and also avoiding unevenness of the cable after secondary extrusion.

[0033] Furthermore, the tray mounting post 66 includes a mounting base 661, a mounting post 662, a spring 663, a movable pin 665, and a limiting cover 664. The mounting base 661 is fixedly connected to the wrapping tray 65. The mounting base 661 has a mounting cavity. The mounting post 662 is slidably disposed in the mounting cavity. One end of the mounting post 662 is provided with a limiting part 6621. The limiting cover 664 is disposed at one end of the mounting base 661. One end of the mounting post 662 passes through the limiting cover 664. The spring 663 is sleeved on the mounting post 662. Both ends of the spring 663 abut against the limiting part 6621 and the limiting cover 664, respectively. One end of the mounting post 662 that passes through the limiting cover 664 is provided with a movable pin mounting groove 6622. The movable pin 665 is rotatably disposed in the movable pin mounting groove 6622. In this embodiment, the depth of the movable pin mounting groove 6622 is greater than half the length of the movable pin 665, so that one end of the movable pin 665 can be rotated into the movable pin mounting groove 6622. When using the mold to install the tape reel, rotate one end of the movable pin 665 into the movable pin mounting slot 6622, then align the tape reel with the tape reel mounting post 66 and install it in place. Pull out the mounting post 662. After pulling out the mounting post 662, rotate the movable pin 665 to a direction perpendicular to the axis of the mounting post 662 and release the mounting post 662. The elastic force of the spring 663 will cause the mounting post 662 to rebound. Since the movable pin 665 is perpendicular to the axis of the mounting post 662, the movable pin 665 will pull and lock the tape reel, fixing it to the wrapping reel 65. When the wrapping mechanism is running, the tape reel will rotate as the tape is wound onto the mixing cable. The movable pin 665 will press the tape reel onto the wrapping reel 65, providing resistance to the rotation of the tape reel and thus providing a certain preload for the wrapping tape.

[0034] Furthermore, the edge of the material strip inlet 611 is a smooth curved surface. Since the material strip has a certain preload, the smooth curved surface prevents the material strip from being pulled apart when it enters the material strip inlet 611.

[0035] Furthermore, two of each of the first inlet holes 11 and the first extrusion ports 215 are provided, and the two first inlet holes 11 and the two first extrusion ports 215 are arranged adjacent to each other. In this embodiment, two of each of the first inlet holes and the first extrusion ports 215 are provided, so that the optoelectronic hybrid cable has at least the ability to supply power.

[0036] Furthermore, a transition hole 218 is provided between the cooling chamber 212 and the drying chamber 213. The transition hole 218 connects the cooling chamber 212 and the drying chamber 213. A rubber ring 219 is provided at one end of the transition hole 218 that connects to the cooling chamber 212. After the cooling water cools the wire, a lot of water droplets will remain on the wire, which is not conducive to the subsequent drying step in the drying chamber 213. By providing the rubber ring 219, the water droplets on the wire are scraped off after the wire passes through the rubber ring 219, so that the wire can be quickly dried in the drying chamber.

[0037] Furthermore, the cross-sectional area of ​​the first flow channel 4 decreases along the flow direction, and the cross-sectional area of ​​the second flow channel 5 also decreases along the flow direction. The gradually decreasing cross-sectional areas of both the first flow channel 4 and the second flow channel 5 can increase the pressure at the extrusion port during extrusion, facilitating extrusion.

[0038] Furthermore, the front section of the second inlet hole 221 is disposed on the first unit 21, and the rear section of the second inlet hole 221 is disposed on the second unit 22. The junction of the optical fiber oblique inlet 216 and the front section of the second inlet hole 221 is a smooth curved surface. Since the angle of movement of the optical fiber changes during junctioning, the optical fiber will inevitably experience wear. The smooth curved surface transition can prevent excessive wear of the optical fiber during junctioning.

[0039] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the present invention. Any person skilled in the art can make many possible variations and modifications to the technical solution of the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of the present invention without departing from the scope of the present invention are within the protection scope of the present invention.

Claims

1. A hybrid optical and electrical cable extrusion mold, characterized in that, The device includes a first mold (1), a second mold (2), and a third mold (3) connected in sequence. The first mold (1) is provided with a first inlet hole (11). The second mold (2) is provided with a first extrusion port (215), a cooling chamber (212), a drying chamber (213), and a second inlet hole (221) connected in sequence. The third mold (3) is provided with a second extrusion port (31). The second mold (2) is also provided with an optical fiber oblique inlet (216), which is connected to the second inlet hole (221). The first mold (1) is connected to the second mold (2) with a first cone (12) at one end, and the second mold (2) is connected to the first mold (1) with a first recess (211) at one end. The gap between the first cone (12) and the first recess (211) forms a first flow channel (4). The second mold (2) is provided with a first feed port (214) which is connected to the first flow channel (4). The second mold (2) is connected to the third mold (3) with a second cone (224) at one end, and the third mold (3) is connected to the second mold (2) with a second recess (33) at one end. The gap between the second cone (224) and the second recess (33) forms a second flow channel (5). The third mold (3) is provided with a second feed port (32) which is connected to the second flow channel (5). The second module (2) includes a first unit (21) and a second unit (22). The first unit (21) is connected to the first module (1), and the second unit (22) is connected to the third module (3). The first unit (21) and the second unit (22) are connected by a plurality of connecting arms (223) arranged in a circumferential array. A wrapping mechanism is provided between the first unit (21) and the second unit (22). A transition hole (218) is provided between the cooling chamber (212) and the drying chamber (213). The transition hole (218) is used to connect the cooling chamber (212) and the drying chamber (213). A rubber ring (219) is provided at one end of the transition hole (218) that connects to the cooling chamber (212).

2. The extrusion mold for a hybrid optoelectronic cable according to claim 1, characterized in that, The wrapping mechanism includes a wrapping motor (62), a wrapping ring (61), a wrapping disc (65), and a material tray mounting post (66). The two ends of the wrapping ring (61) are rotatably connected to the first unit (21) and the second unit (22), respectively. The wrapping motor (62) is embedded in the second unit (22) near the end of the first unit (21). A gear (64) is connected to the power output end of the wrapping motor (62). A gear tooth (612) is provided on the outer wall of one end of the wrapping ring (61), and the gear (64) meshes with the gear tooth (612). The wrapping disc (65) is obliquely arranged on the wrapping ring (61). The material tray mounting post (66) is arranged on the wrapping disc (65) for installing the material strip. The wrapping ring (61) is provided with a material strip inlet (611) for the material strip to pass through.

3. The extrusion mold for a hybrid optoelectronic cable according to claim 2, characterized in that, The tray mounting post (66) includes a mounting base (661), a mounting post (662), a spring (663), a movable pin (665), and a limiting cover (664). The mounting base (661) is fixedly connected to the wrapping tray (65). The mounting base (661) has a mounting cavity. The mounting post (662) is slidably disposed in the mounting cavity. One end of the mounting post (662) is provided with a limiting part (6621). The limiting cover (664) is disposed on the mounting base (661). 61) At one end, the mounting post (662) passes through the limiting cover (664), the spring (663) is sleeved on the mounting post (662), and the two ends of the spring (663) abut against the limiting part (6621) and the limiting cover (664) respectively. The mounting post (662) is provided with a movable pin mounting groove (6622) at one end that passes through the limiting cover (664), and the movable pin (665) is rotatably disposed in the movable pin mounting groove (6622).

4. The extrusion mold for a hybrid optoelectronic cable according to claim 2, characterized in that, The edge of the feed strip inlet (611) is a smooth curved surface.

5. The extrusion mold for a hybrid optoelectronic cable according to claim 1, characterized in that, The first inlet hole (11) is provided with at least two, and correspondingly, the first extrusion port (215) is also provided with at least two, and the number corresponds to the first inlet hole (11).

6. The extrusion mold for a hybrid optoelectronic cable according to claim 1, characterized in that, The cross-sectional area of ​​the first flow channel (4) decreases along the flow direction, and the cross-sectional area of ​​the second flow channel (5) decreases along the flow direction.

7. The extrusion mold for a hybrid optoelectronic cable according to claim 1, characterized in that, The front section of the second inlet hole (221) is disposed on the first unit (21), and the rear section of the second inlet hole (221) is disposed on the second unit (22). The optical fiber oblique inlet (216) and the front section of the second inlet hole (221) merge, and the junction of the merging points is a smooth curved surface.

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