A spiral cluster optical cable and a rotary extrusion manufacturing method

Abstract

The present invention relates to a spiral bundled optical cable and a rotary extrusion manufacturing method, comprising a spiral cylinder, in which a photoelectric unit is arranged; the spiral cylinder is composed of several sheaths and connecting ribs, and the connecting ribs are connected to several sheaths in an annular shape on the outer periphery; the photoelectric unit is located in the sheath; the photoelectric unit comprises an optical cable core or an electrical cable core or a mixture of the two; the shape of the photoelectric unit comprises a circular and non-circular fan-shaped, flat, and elliptical shape. A new structure of a spiral bundled optical cable is invented, which solves the structural design problem of the longitudinal spiral shape of the bundled optical cable. The longitudinal spiral structure of this type of cable makes the bundled optical cable have excellent comprehensive performance advantages and overall flexibility, and is suitable for frequent movement and bending environment conditions, and is not easy to damage the structure and materials of the cable; when the cable is divided and bifurcated, the photoelectric unit and the sheath can be easily peeled off from the connecting rib, which is convenient for wiring in a limited space and maintains the integrity and reliability of the sheaths of each photoelectric unit in the cable.

Description

Technical Field

[0001] The invention belongs to the technical field of optical cables and electric cables, and relates to a spirally bundled optical cable and a rotary extrusion manufacturing method. Background Art

[0002] Bundled optical cables, including bundled cables, optical cables and optoelectronic composite cables, are usually arranged in parallel or in a star shape by multiple conductive units, optical fiber units and steel strand reinforcements. The sheaths of each unit are connected by a thinner connecting rib. This structure is convenient for overall construction and cable laying. The connecting ribs between the units are easy to tear without damaging the sheath, and the wiring of each unit is convenient after separation. However, the units of common bundled optical cables are arranged in parallel in a longitudinal straight line, which is difficult to make into a spiral shape. This type of bundled optical cable is rigid as a whole and has poor bending performance, which greatly limits the application pattern. It is only suitable for limited laying methods such as outdoor overhead and pipelines, and is not suitable for frequent bending and moving places. Example 1: The bundled overhead conductor is composed of 3 to 5 hard aluminum conductors arranged in parallel in a longitudinal straight line, with a one-time extruded insulation layer and connecting ribs; Example 2: The 8-shaped steel wire self-supporting communication optical cable is composed of steel strands and optical fiber units arranged in parallel in a longitudinal straight line, with a one-time extruded sheath and connecting ribs. This type of bundled optical cable, in which each unit is circular in shape and arranged in parallel in longitudinal lines, adopts a manufacturing method in which each unit is laid out in parallel in straight lines and the extrusion mold is fixed.

[0003] With the rapid integration and development of mobile communications, industrial automation, and artificial intelligence technologies, there are more and more types of wiring in communication rooms and smart substations. In particular, with the rapid development of intelligent manufacturing technology, the wiring space of intelligent robotic arms and mobile robots is even more limited. Due to frequent movement and bending, the bending performance of optical cables is more prominent. The simple bundling harnesses of commonly used wires and cables, optical fiber cables, and the overall rigid bundled optical cables cannot meet the requirements of frequent movement and bending. This has also become one of the problems that the industry urgently needs to solve.

[0004] To this end, how to design a reasonable structure of spiral bundled optical cables, break through the limitations of existing manufacturing technology, and study new manufacturing methods to arrange the optoelectronic units of the bundled optical cables in a longitudinal spiral manner, while meeting the requirements that the optoelectronic units of the bundled optical cables have different shapes, frequent movements and bending, and tight sizes, has become the key to cutting-edge technology for solving the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a spirally bundled optical cable and a rotary extrusion manufacturing method, which can solve the above-mentioned problems and has a high value of popularization and application in the industry.

[0006] According to the technical solution provided by the present invention: a spiral bundled optical cable includes a spiral cylinder, in which a photoelectric unit is arranged; the spiral cylinder is composed of several sheaths and connecting ribs, and the connecting ribs are annularly connected to several sheaths; the photoelectric unit is located in the sheath.

[0007] As a further improvement of the present invention, the optoelectronic unit comprises an optical cable core or an electrical cable core or a mixture of the two.

[0008] As a further improvement of the present invention, the shape of the photovoltaic unit includes circular and non-circular fan-shaped, flat and elliptical shapes.

[0009] As a further improvement of the present invention, the sheath and the connecting ribs are integrally formed and are made of the same thermoplastic insulating material.

[0010] As a further improvement of the present invention, the thermoplastic insulating material includes polyolefin or soft polyvinyl chloride or polyurethane or rubber-plastic elastomer.

[0011] As a further improvement of the present invention, the spiral direction of the longitudinal spiral of the spiral column is S direction or Z direction.

[0012] As a further improvement of the present invention,

[0013] Step 1: prepare the photoelectric unit and load several photoelectric units into the pay-off drums in the cage stranding machine; the cage stranding machine can drive the photoelectric unit forward;

[0014] Step 2, assemble the production line and make adjustments; the production line consists of a cage stranding machine, an extruder, a rotary extruder head, a hot water spray box, a cooling water tank, a traction device and a wire take-up machine arranged in sequence; the rotary extruder head includes a head cover; the mold shaft is rotatably installed in the head cover, and the mold shaft hole axially passes through the mold shaft, and the mold shaft hole is used to pass the photoelectric unit; the front end of the mold shaft is connected to the mold seat, the mold core is installed in the middle of the mold seat, and the front end of the mold seat is connected to the mold sleeve; a feed port is provided on the head cover, and a pressure equalizing hole connected thereto is provided on the mold seat, and the feed port and the pressure equalizing hole are connected through a distributor; the mold core passes through uniformly distributed photoelectric unit positioning holes; the mold sleeve passes through the column positioning holes, and the rear end of the mold shaft extends out of the head cover Connected to the driving device; adjusting the driving device so that the rotation direction of the cage twisting machine and the mold shaft is the same as the spiral mode of the spiral bundled optical cable, and the mold shaft, mold seat, mold core, and mold sleeve operate synchronously; adjusting the pay-off mode of each pay-off drum of the cage twisting machine, the circular photoelectric unit adopts the back-twisting pay-off mode, and the non-circular photoelectric unit adopts the non-back-twisting pay-off mode; adjusting the position of the photoelectric positioning hole on the mold core and the column positioning hole on the mold sleeve so that the shape and position of the photoelectric positioning hole on the mold core and the column positioning hole on the mold sleeve correspond; leading each photoelectric unit from the pay-off drum of the cage twisting machine, passing through the mold hole of the mold shaft, the photoelectric positioning hole on the mold core, and the column positioning hole on the mold sleeve to reach the cable drum of the take-up machine;

[0015] Step 3, extrusion of spiral bundled optical cables;

[0016] 1. Synchronously rotate the cage stranding machine and the mold shaft as well as the mold base, mold core, and mold sleeve, and pay off the photoelectric unit at the same time;

[0017] 2. Use an extruder at the extrusion temperature to push the melted and softened sheath material through the feed port of the head cover in the rotating extruder head, through the distributor, the pressure ring hole, and the material channel between the mold core and the mold cover to reach the periphery of each photoelectric unit. The heat cable extruded by the mold core and the mold cover comes out from the mold cover port;

[0018] 3. Straight-line traction of the cable: The traction device presses the cooled and shaped cable and prevents it from twisting. On the one hand, the cable is pulled out of the cold water tank in a straight line for routing. On the other hand, the cable is twisted into a longitudinal spiral shape in the rotating state of the mold core and the mold sleeve. Synchronously, the cable is formed into a longitudinal spiral structure in the hot water spray box and the cooling water tank and cooled and shaped.

[0019] Step 4, forming of the longitudinal spiral structure: the extruded heat cable enters a hot water spray box, and the sheath and connecting ribs are sprayed with hot water for preliminary cooling; when the surface of the sheath and connecting ribs has been initially cooled but the inside has not been completely cooled, the synchronously rotating mold core and mold sleeve drive the cable to twist, so that the longitudinal spiral structure is gradually formed;

[0020] Step 5: Cable cooling and shaping: After the longitudinal spiral structure of the cable is formed, it enters a cooling water tank for sufficient cooling and shaping, and then drops to room temperature.

[0021] As a further improvement of the present invention, in step two, a distributor sleeve in the rotary extruder head is arranged on the outer periphery of the front end of the mold shaft, between the mold shaft and the head sleeve; a distributor cavity is provided in the distributor, and the distributor cavity connects the feed port and the pressure equalizing hole; the pressure equalizing hole on the mold sleeve seat is a row of inclined holes distributed in concentric circles; the mold shaft is rotatably installed in the head sleeve through a bearing group.

[0022] As a further improvement of the present invention, the bearing group is composed of several bearings, and the positioning sleeves and bearings are installed at intervals on the outer periphery of the rear section of the mold shaft; a bearing cavity is opened on the head cover, and a pressure plate is installed on the right side of the bearing cavity through a pressure plate fixing screw, and the pressure plate fixes the positioning sleeve and the bearing in the bearing cavity; the bearing group is composed of a number of concentric bearings and a number of plane bearings; the plane bearing is in contact with the pressure plate, and the positioning sleeve located in the front row is in contact with the inner wall of the bearing cavity, and the forward and backward moving position of the mold shaft is fixed; a coolant jacket is provided at the rear section of the head cover, and the coolant jacket is located on the outer periphery of the bearing cavity; the coolant jacket cools the concentric bearings and the plane bearings through coolant.

[0023] As a further improvement of the present invention, a plurality of spiral mold shaft return grooves are distributed on the outer periphery of the front section of the mold shaft, and the spiral direction of the mold shaft return groove is the same as the spiral direction of the longitudinal spiral of the cable; a plurality of spiral mold seat return grooves are distributed on the outer periphery of the rear section of the mold seat, and the spiral direction of the mold seat return groove is opposite to the spiral direction of the longitudinal spiral of the cable. 。

[0024] The positive effects of this application are:

[0025] The advantages of the present invention are: the spiral bundled optical cable and the rotary extrusion manufacturing method provided by the present invention have a reasonably designed product structure and adopt a new process method and device, and have the following characteristics:

[0026] (1) A new structure of spiral bundled optical cable was invented, which solved the design problem of the longitudinal spiral structure of bundled optical cable. The longitudinal spiral structure of this cable makes the bundled optical cable have excellent comprehensive performance advantages and overall flexibility, suitable for frequent movement and bending environment conditions, and is not easy to damage the structure and materials of the cable; when the cable is divided and bifurcated, the photoelectric unit and the sheath can be easily peeled off from the connecting rib, which is convenient for wiring in limited space and maintains the integrity and reliability of the sheath of each photoelectric unit in the cable.

[0027] (2) A new manufacturing technology for spirally bundled optical cables was invented. It uses a linkage manufacturing technology process that uses a cage stranding machine and a rotating extruder head to rotate the mold core and mold sleeve synchronously, a combined cooling method, and a crawler linear traction method to achieve the formation of the longitudinal spiral structure of the bundled optical cable.

[0028] (3) The rotary extruder head of the present invention has a mold core and a mold sleeve that can rotate synchronously; the pressure equalizing ring is arranged to make the pressure of the molten plastic between the mold core and the mold sleeve more uniform, so as to ensure the structural shape of the extruded optical cable.

[0029] The above-mentioned characteristics, on the one hand, solve the structural design and manufacturing method of spiral bundled optical cables, and improve the frequent movement and bending performance and reliability of bundled optical cables. On the other hand, it makes cabling and wiring more convenient, greatly reducing the comprehensive cost of manufacturing and installation of optical cables. It is suitable for large-scale industrial promotion and application, and has high industrial promotion and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of the spiral bundled optical cable of the present invention.

[0031] Figure 2 It is a schematic diagram of the rotary extruder head of the present invention.

[0032] Figure 3 Schematic diagram of the mold core of the present invention.

[0033] Figure 4 It is a schematic diagram of the mold sleeve of the present invention.

[0034] Figure 5 It is a schematic diagram of the return trough of the present invention.

[0035] Figure 1-Figure 5 It includes: 1-photoelectric unit, 2-sheath, 3-connecting rib, 5-machine head cover, 51-feeding port, 6-distributor, 7-rotating mold shaft, 71-mold shaft return trough, 72-mold shaft threaded interface, 73-mold shaft hole, 8-mold sleeve seat, 81-equalizing ring, 82-mold sleeve seat return trough, 83-mold sleeve seat threaded interface, 9-mold core, 91-photoelectric unit positioning hole, 10-mold sleeve, 101-column positioning hole, 11-coolant jacket, 12-concentric bearing, 13-positioning sleeve, 14-plane bearing, 15-pressing plate, 16-fixing screw, 17-fixing screw. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0038] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, similar terms such as "including" and "having" mean that in addition to those contents already listed in "including" and "having", other contents that have not been listed may also be "included" and "having"; for example, a process, method, system, product or device that may include a series of steps or units is not necessarily limited to those steps or units that have been clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0039] Due to the angle of the drawing, some components may not be drawn, but their positions and connection relationships can be partially understood based on the text expression.

[0040] like Figure 1 As shown, the present invention is a spiral bundled optical cable, including a spiral cylinder, in which a photoelectric unit 1 is arranged; the spiral cylinder is composed of several sheaths 2 and connecting ribs 3, and the connecting ribs 3 are annularly connected to several sheaths 2 on the outer periphery; the photoelectric unit 1 is located in the sheath 2.

[0041] The optoelectronic unit 1 comprises an optical cable core or an electrical cable core or a mixture of the two.

[0042] The shapes of the photovoltaic unit 1 include circular, non-circular sector, flat, and elliptical.

[0043] The sheath 2 and the connecting rib 3 are integrally formed and are made of the same thermoplastic insulating material.

[0044] Thermoplastic insulating materials include polyolefins or soft polyvinyl chloride or polyurethane or rubber-plastic elastomers.

[0045] The spiral direction of the longitudinal spiral of the spiral column is S direction or Z direction, and the two spiral directions are opposite.

[0046] A method for manufacturing a spirally bundled optical cable by rotary extrusion, which is used to manufacture the spirally bundled optical cable as described above, comprises the following steps:

[0047] Step 1: prepare the photoelectric unit 1 and load several photoelectric units 1 into each pay-off drum in the cage stranding machine. The cage stranding machine can pay off the photoelectric unit 1 on the pay-off drum with a preset tension.

[0048] Step 2, assemble the production line and make adjustments. The production line consists of a cage stranding machine, an extruder, a rotary extruder head, a hot water spray box, a cooling water tank, a traction device and a take-up machine arranged in sequence; the overall cable is driven forward by the traction device and the take-up machine. The rotary extruder head includes a head cover 5, in which a mold shaft 7 is rotatably installed, and a mold shaft hole 73 is axially penetrated in the mold shaft 7, and the mold shaft hole 73 is used to pass the photoelectric unit 1; the front end of the mold shaft 7 is connected to the mold seat 8, and the mold core 9 is installed in the middle of the mold seat 8, and the front end of the mold seat 8 is connected to the mold sleeve 10. A feed port 51 is provided on the head cover 5, and a pressure equalizing hole 81 connected thereto is provided on the mold seat 8, and the feed port 51 is connected to the pressure equalizing hole 81 through a distributor 6. The mold core 9 is penetrated with uniformly distributed photoelectric unit positioning holes 91 for positioning the photoelectric unit 1. The mold sleeve 10 is penetrated with a column positioning hole 101 for positioning the column.

[0049] The distributor 6 is sleeved on the outer periphery of the front end of the mold shaft 7, between the mold shaft 7 and the head cover 5. The distributor 6 is provided with a distribution cavity, which is connected with the feed port 51 and the pressure equalizing hole 81.

[0050] The pressure equalizing holes 81 on the mold sleeve seat 8 are a row of inclined holes distributed in concentric circles. The function of the pressure equalizing holes 81 is to make the pressure of the melted and softened insulating material entering the material channel between the mold core 9 and the mold sleeve 10 more uniform in all directions after the melted and softened insulating material is initially pressure-equalized by the distributor 6 and then pressure-equalized by the pressure equalizing holes 81.

[0051] The mold shaft 7 is rotatably installed in the machine head cover 5 through a bearing group. Specifically, the bearing group is composed of several bearings, and the positioning sleeves 13 and bearings are installed at intervals on the outer periphery of the rear section of the mold shaft 7. A bearing cavity is opened on the machine head cover 5, and a pressure plate 15 is installed on the right side of the bearing cavity through a pressure plate fixing screw 16, and the pressure plate 15 fixes the positioning sleeve 13 and the bearing in the bearing cavity. In this embodiment, the bearing group is composed of two concentric bearings 12 and one plane bearing 14. The plane bearing 14 is in contact with the pressure plate 15, and the positioning sleeve 13 located in the front row is in contact with the inner wall of the bearing cavity, and the forward and backward movement position of the mold shaft 7 is fixed.

[0052] In order to reduce the working temperature of the mold shaft and each bearing, a coolant jacket 11 is provided at the rear section of the head cover 5, and the coolant jacket 11 is located at the outer periphery of the bearing cavity. The coolant jacket 11 cools the concentric bearing 12 and the plane bearing 14 through the coolant.

[0053] The mold base 8 is threadedly connected to the mold shaft 7; the rear end of the mold base 8 is provided with an external thread, and the front end of the mold shaft 7 is provided with an adapted mold shaft thread interface 72. The mold core 9 is threadedly installed at the middle and rear end of the mold base 8 and is connected to the mold shaft 7. Specifically, the middle and rear end of the mold base 8 is provided with a mold sleeve seat thread interface 83 that matches the mold core 9.

[0054] Specifically, the mold sleeve 10 is fixed to the mold base 8 by mold sleeve fixing screws 17 .

[0055] like Figure 5 As shown, the front section periphery of the mold shaft 7 is distributed with several spiral mold shaft return grooves 71, and the spiral direction of the mold shaft return grooves 71 is the same as the spiral direction of the longitudinal spiral of the cable. The rear section periphery of the mold seat 8 is distributed with several spiral mold seat return grooves 82, and the spiral direction of the mold seat return grooves 82 is opposite to the spiral direction of the longitudinal spiral of the cable. The function of the spiral return grooves 71 and 82 is to extrude a small amount of melted and softened insulating material squeezed into the dynamic gap of the operating part under high pressure, and use the reverse thrust generated by the rotation of the return grooves to prevent the insulating material from further squeezing in and push it back into the material channel, thereby avoiding the normal operation of the rotating parts in the rotary extruder head 5.

[0056] The rear end of the mold shaft 7 extends out of the machine head cover 5 and is connected to the driving device, and the driving mechanism can be a motor. The driving device is adjusted so that the rotation direction of the cage stranding machine and the mold shaft 7 is the same as the spiral mode of the spiral bundled optical cable, and the mold shaft 7 drives the mold seat 8, the mold core 9, and the mold sleeve 10 to operate synchronously.

[0057] The pay-off method of each pay-off drum of the cage stranding machine is adjusted. The circular photoelectric unit 1 adopts the back-twisting pay-off method, and the non-circular photoelectric unit 1 adopts the non-back-twisting pay-off method.

[0058] The positions of the photoelectric positioning hole 91 on the mold core 9 and the column positioning hole 101 on the mold sleeve 10 are adjusted so that the shapes and positions of the photoelectric positioning hole 91 on the mold core 9 and the column positioning hole 101 on the mold sleeve 10 correspond to each other.

[0059] Each photoelectric unit is led out from the pay-off drum of the cage stranding machine, passes through the mold hole 73 of the mold shaft 7, the photoelectric unit positioning hole 91 on the mold core 9, and the column positioning hole 101 on the mold sleeve 10 to reach the cable drum of the take-up machine.

[0060] The above is a spiral bundled optical cable with an S-direction spiral direction and a manufacturing method. From the direction of unwinding to the direction of rewinding, the rotation direction of the mold core shaft, mold core, and mold sleeve in the cage stranding machine and the rotary extruder head is clockwise.

[0061] If a spirally bundled optical cable with a Z-direction spiral direction is manufactured, the rotation direction of the mold core shaft, mold core, and mold sleeve in the above-mentioned corresponding cage stranding machine and rotary extruder head, and the spiral direction of the return trough are adjusted in the opposite direction.

[0062] Step three: extrusion of spiral bundled optical cables.

[0063] 1. The cage stranding machine and the mold shaft 7 as well as the mold base 8, the mold core 9, and the mold sleeve 10 are rotated synchronously, and the photoelectric unit 1 is released at the same time.

[0064] 2. Use an extruder at the extrusion temperature to push the molten and softened insulating material through the feed port 51 of the head cover 5 in the rotating extruder head, and sequentially pass through the distributor 6, the pressure-equalizing ring hole 81, and the material channel between the mold core 9 and the mold sleeve 10 to reach the periphery of each photovoltaic unit 1. The heat cable extruded by the mold core 9 and the mold sleeve 10 is discharged from the mold sleeve 10.

[0065] 3. Straight-line traction of the cable. The traction device presses the cable that is cooled and shaped and prevents it from twisting. On the one hand, the cable is pulled straight out of the cold water tank for routing. On the other hand, the cable is twisted into a longitudinal spiral shape in the rotating state of the mold core and the mold sleeve. Synchronously, the cable is formed into a longitudinal spiral structure in the hot water spray box and the cooling water tank and cooled and shaped.

[0066] Step 4, forming of the longitudinal spiral structure: the extruded thermal cable enters a hot water spray box, and the sheath 2 and the connecting ribs 3 are sprayed with hot water for preliminary cooling; when the surface of the sheath 2 and the connecting ribs 3 has been initially cooled but the inside has not been completely cooled, the synchronously rotating mold core 9 and mold sleeve 10 drive the cable to twist, so that the longitudinal spiral structure is gradually formed.

[0067] Step 5: Cable cooling and shaping: After the longitudinal spiral structure of the cable is formed, it enters a cooling water tank for sufficient cooling and shaping, and then drops to room temperature.

[0068] Step six, use a take-up machine to wind the cooled and shaped cable onto the cable drum.

[0069] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A method for manufacturing a spirally bundled optical cable by rotary extrusion, characterized in that: include Step 1: prepare the photoelectric unit (1), and load several photoelectric units (1) into each pay-off drum in the cage stranding machine; the cage stranding machine can drive the photoelectric unit (1) forward; Step 2, assembling the production line and adjusting it; the production line is composed of a cage stranding machine, an extruder, a rotary extruder head, a hot water spray box, a cooling water tank, a traction device and a wire take-up machine arranged in sequence; the rotary extruder head includes a head cover (5); a mold shaft (7) is rotatably installed in the head cover (5), and a mold shaft hole (73) is axially penetrated in the mold shaft (7), and the mold shaft hole (73) is used to pass the photoelectric unit (1); the front end of the mold shaft (7) is connected to the mold base (8), the mold core (9) is installed in the middle of the mold base (8), and the front end of the mold base (8) is connected to the mold cover (10); a feed port (51) is provided on the head cover (5), and a pressure equalizing hole (81) connected thereto is provided on the mold base (8), and the feed port (51) and the pressure equalizing hole (81) are connected through a distributor (6); the mold core (9) is penetrated by uniformly distributed photoelectric unit positioning holes (91); the mold cover (10) is penetrated by a column positioning hole (101), and the rear end of the mold shaft (7) extends out of the machine The head cover (5) is connected to the driving device; the driving device is adjusted so that the rotation direction of the cage twisting machine and the mold shaft (7) is the same as the spiral mode of the spiral bundled optical cable, and the mold shaft (7), the mold seat (8), the mold core (9), and the mold sleeve (10) operate synchronously; the pay-off mode of each pay-off drum of the cage twisting machine is adjusted, and the circular photoelectric unit (1) adopts the back-twisting pay-off mode, and the non-circular photoelectric unit (1) adopts the non-back-twisting pay-off mode; the position of the photoelectric positioning hole (91) on the mold core (9) and the column positioning hole (101) on the mold sleeve (10) is adjusted so that the shape and position of the photoelectric positioning hole (91) on the mold core (9) and the column positioning hole (101) on the mold sleeve (10) correspond; each photoelectric unit is led out from the pay-off drum of the cage twisting machine, passes through the mold shaft hole (73) of the mold shaft (7), the photoelectric positioning hole (91) on the mold core (9), and the column positioning hole (101) on the mold sleeve (10) to reach the cable drum of the take-up machine; Step 3, extrusion of spiral bundled optical cables; 1. Synchronously rotating the cage stranding machine and the mold shaft (7) as well as the mold base (8), the mold core (9), and the mold sleeve (10), while simultaneously paying out the photoelectric unit (1); 2. Using an extruder at an extrusion temperature, the melted and softened sheath material is pushed through the feed port (51) of the head cover (5) in the rotating extruder head, and sequentially passes through the distributor (6), the pressure equalizing hole (81), and the material channel between the mold core (9) and the mold cover (10) to reach the periphery of each photovoltaic unit (1), and the heat cable extruded under the action of the mold core (9) and the mold cover (10) is discharged from the mold cover (10); Step 4, forming of longitudinal spiral structure: straight line traction of cable; the traction device presses the cable that is cooled and shaped to prevent the cable from twisting, on the one hand, the cable is pulled out of the cold water tank in a straight line for routing, on the other hand, the cable is twisted into a longitudinal spiral shape in the rotating state of the mold core and the mold sleeve, and the cable is synchronously formed into a longitudinal spiral structure in the hot water spray box and the cooling water tank and cooled and shaped; The specific operation is as follows: the extruded heat cable enters a hot water spray box, and the hot water is used to spray the jacket (2) and the connecting rib (3) for preliminary cooling; when the surface of the jacket (2) and the connecting rib (3) has been initially cooled but the inside has not been completely cooled, the synchronously rotating mold core (9) and the mold sleeve (10) drive the cable to twist, so that the longitudinal spiral structure is gradually formed; After the longitudinal spiral structure of the cable is formed, it enters a cooling water tank for full cooling and shaping, and then drops to room temperature; The spiral bundled optical cable comprises a spiral column, in which a photoelectric unit (1) is arranged; the spiral column is composed of a plurality of sheaths (2) and connecting ribs (3), and the connecting ribs (3) are connected to the plurality of sheaths (2) in an annular manner at the periphery; and the photoelectric unit (1) is located inside the sheath (2).

2. The method for manufacturing a spirally bundled optical cable by rotary extrusion as claimed in claim 1, characterized in that: The optoelectronic unit (1) comprises an optical cable core or an electrical cable core or a mixture of the two.

3. The method for manufacturing a spirally bundled optical cable by rotary extrusion as claimed in claim 1, characterized in that: The shape of the photovoltaic unit (1) includes circular, non-circular sector-shaped, flat, and elliptical.

4. The method for manufacturing a spirally bundled optical cable by rotary extrusion as claimed in claim 1, characterized in that: The sheath (2) and the connecting rib (3) are integrally formed and are made of the same thermoplastic insulating material.

5. The method for manufacturing a spirally bundled optical cable by rotary extrusion as claimed in claim 1, characterized in that: Thermoplastic insulating materials include polyolefins, soft polyvinyl chloride, polyurethane, and rubber and plastic elastomers.

6. The method for manufacturing a spirally bundled optical cable by rotary extrusion as claimed in claim 1, characterized in that: The spiral direction of the longitudinal spiral of the spiral column is S direction or Z direction.

7. The method for manufacturing a spirally bundled optical cable by rotary extrusion as claimed in claim 1, characterized in that: Step 2: The distributor (6) in the rotary extruder head is sleeved on the outer periphery of the front end of the mold shaft (7) and between the mold shaft (7) and the head cover (5); a distributor cavity is provided in the distributor (6), and the distributor cavity communicates with the feed inlet (51) and the pressure equalizing hole (81); the pressure equalizing hole (81) on the mold base (8) is a row of inclined holes distributed in concentric circles; the mold shaft (7) is rotatably mounted in the head cover (5) through a bearing group.

8. The method for manufacturing a spirally bundled optical cable by rotary extrusion as claimed in claim 1, characterized in that: The bearing group is composed of a plurality of bearings, and the outer periphery of the rear section of the mold shaft (7) is installed with positioning sleeves (13) and bearings at intervals; a bearing cavity is opened on the head cover (5), and a pressure plate (15) is installed on the right side of the bearing cavity through a pressure plate fixing screw (16), and the pressure plate (15) fixes the positioning sleeve (13) and the bearing in the bearing cavity; the bearing group is composed of two concentric bearings (12) and one plane bearing (14) arranged in an arranged manner; the plane bearing (14) is in contact with the pressure plate (15), and the positioning sleeve (13) located in the front row is in contact with the inner wall of the bearing cavity, and the forward and backward movement position of the mold shaft (7) is fixed; a coolant jacket (11) is provided at the rear section of the head cover (5), and the coolant jacket (11) is located on the outer periphery of the bearing cavity; the coolant jacket (11) cools the concentric bearing (12) and the plane bearing (14) through the coolant.

9. The method for manufacturing a spirally bundled optical cable by rotary extrusion as claimed in claim 1, characterized in that: A plurality of spiral mold shaft return grooves (71) are distributed on the outer periphery of the front section of the mold shaft (7), and the spiral direction of the mold shaft return groove (71) is the same as the spiral direction of the longitudinal spiral shape of the cable; a plurality of spiral mold seat return grooves (82) are distributed on the outer periphery of the rear section of the mold seat (8), and the spiral direction of the mold seat return groove (82) is opposite to the spiral direction of the longitudinal spiral shape of the cable.

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