WO2003011564A1

WO2003011564A1 - An apparatus for producing corrugated covering duct in use for multi-optical cable

Info

Publication number: WO2003011564A1
Application number: PCT/CN2002/000525
Authority: WO
Inventors: Lingxiu Xu
Original assignee: Lingxiu Xu
Priority date: 2001-08-01
Filing date: 2002-07-29
Publication date: 2003-02-13

Abstract

An apparatus which can produce corrugated covering duct for multi-optical cable comprises extruder, die, guider, vacuum moulding device, and winding up device. The die fixed to the extruder exit end has 'T' shape, the vertical end connecting to the outlet of the extruder and the transverse ends connecting to the guider and vacuum moulding device, respectively. The screw of the extruder has a solid phase transferring zone (feeding zone) a compressing zone, a solid-liquor separating zone and a liquor phase transferring zone, in which the solid phase transferring zone and solid-liquor separating zone have multiple thread, i.e. main thread and auxiliary thread, moreover in the solid-liquor separating zone the auxiliary thread's outer diameter is smaller than the main thread's. The corrugated covering duct made by the invention apparatus has good quality, high pressure-resistant and flexural strength, convenience of storing and transporting and simplicity for installation.

Description

Production equipment for corrugated multi-cavity optical cable conduit

Technical field

The invention relates to a plastic control machine, in particular to a corrugated multi-cavity optical cable duct production equipment.

Background technique

The stress caused by the cross-section structure of ordinary multi-cavity optical cable conduits (such as plum-shaped five-lumen tubes, nine-gong shaped nine-lumen tubes, etc.) produced by existing process equipment is too concentrated, the ring stiffness is poor, and it cannot reach the load resistance during laying. The requirements cannot be bent and not long enough. Therefore, a kind of corrugated multi-cavity optical cable guide tube with high pressure resistance and flexibility was born. This corrugated multi-cavity optical cable conduit is shown in Figs. 3 and 4, which are covered with a layer of spiral single-wall corrugated tube 3 on the outside of a number of optical cable inner conduits 1. The inner diameter of the spiral is heat-sealed in a number of optical cables. The catheter 1 consists of the catheter bundle on the outer circumference. This corrugated multi-cavity optical cable duct 4 is composed of a high-pressure-resistant and flexible single-wall corrugated tube 3 as an outer tube, and a plurality of silicon-wall tubes or prismatic-wall tubes with low friction coefficients and different colors are used as inner tubes. High-performance pipes. Compared with the previous various pipes, this corrugated fiber optic cable duct has almost all the characteristics greatly improved. However, since there is no complete set of equipment to guarantee it in manufacturing, it cannot reach a high level in terms of the size, shape accuracy, load resistance, and productivity of the product. In addition, the processing mechanisms of single and twin screw extruders commonly used in general plastic pipe processing are focused on dispersion and mixing during processing and lack the necessary means of distributed mixing. Therefore, it is difficult to solve the various unevenness of the materials in the molding process, such as: uneven temperature distribution of materials, uneven pressure distribution, uneven distribution of pigments and auxiliaries, and these unevenness all affect the intrinsic and appearance of the product quality. On the other hand, the common structure of various extruded pipe heads is prone to be invisible on the surface, but there are actually melting marks in the interior, thereby reducing the resistance to hoop pressure and impact of the pipe. and also That is to say, a propylene copolymer material with excellent performance cannot produce a pipe product with higher performance that it should have in the molding process of a universal single-screw or twin-screw extruded pipe.

Disclosure of invention

An object of the present invention is to provide a corrugated multi-cavity optical cable duct production equipment. The use of this device can solve the stress of the cross section of the ordinary multi-cavity optical cable duct in the existing structure due to poor structure, the ring stiffness is poor, and the load resistance is not met. The multi-cavity optical cable duct can withstand high pressure, The bendability is greatly enhanced, which meets the requirements of use and improves the dimensional accuracy. And productivity increases.

An object of the present invention is achieved according to the following technical scheme.

The invention relates to a corrugated multi-cavity optical cable duct production equipment, which is characterized in that it includes a plastic pipe extruder, a composite die, a guide, and a rotary vacuum forming device. A composite die is installed at the exit end of the outer plastic pipe extruder. The composite head is τ-shaped, one end of which is vertically connected to the outlet of the plastic pipe extruder, and two ends of which are connected to the guide and the rotary vacuum forming device. The composite head includes a mixing flow channel and a multi-head leakage mechanism. One end of the mixing flow channel is connected to the outlet of the plastic pipe extruder, and the other end is connected to a multi-head leakage mechanism vertically disposed thereon. The multi-head leakage mechanism includes a movement. One end of the movement is connected with the guide, the center of the movement has an axial through hole, and the outer surface is provided with a connecting groove and a spiral groove communicating with the mixing channel, and the other end of the movement is connected with a vacuum forming device. The rotary vacuum forming device includes a vacuum box and a rotary sleeve installed in the vacuum box. The rotary sleeve has a spiral channel. The bottom diameter of the spiral channel is adapted to the outer diameter of the inner tube bundle. There are small holes evenly distributed.

In the present invention, a guide is used to guide and arrange several optical cable tubes to form an inner tube bundle.

The extruded material in the T-type composite head is sent to the composite head through the distribution mixing channel, and is extruded by the movement of the core, and then extruded into an outer tube blank without welding marks, and sent to the vacuum setting. In the rotating sleeve of the device, through the spiral channel in the rotating sleeve, with the feeding of the inner tube bundle and the rotation of the rotating sleeve, a layer of spiral single-wall corrugations formed by the outer tube blank is heat-sealed on the outside of the inner tube bundle. The crest of the tube is the outer diameter of the corrugated tube, and the trough is the inner diameter of the corrugated tube. It is heat-sealed on the outer tangent circle of the inner tube bundle to become a corrugated multi-lumen tube. Then, the product is sent to the cooling and setting water tank by the rotating molding device to be shaped, dewatered by the dewatering device, and printed by the inkjet printer, and then sent to the winding device by the tractor to be taken up and cut and stored.

Another object of the present invention is to provide a single-screw plastic pipe extruder, which can solve various inhomogeneities of materials in the molding process and the welding marks existing in the plastic during processing, so that the processed plastic pipe products The internal quality such as resistance to hoop pressure, high and low temperature, impact resistance, etc., and appearance quality are greatly improved.

Another object of the present invention is achieved according to the following technical scheme.

The single-screw plastic pipe extruder of the present invention includes the screw comprising a solid-phase conveying section with a feeding section, a compression section, a solid-liquid separation section, and a liquid-phase conveying section, and has a non-return thread at the rear of the screw. The solid-phase conveying section and the solid-liquid separation section are multi-threaded, including the main thread and the auxiliary thread. In the solid-liquid separation section, the start and end points of the auxiliary thread are overlapped with the main thread to form a closed structure, and the outer diameter of the auxiliary thread is slightly smaller than Outside diameter of the main thread, with a tap at the exit end of the screw. The head has a mixing flow channel and a multi-head leakage mechanism. The mixing flow channel on the machine head is spiral, and the left spiral and the right spiral threads are alternately connected in series. Or it is a double-spiral type, with a double left-handed thread channel and a double right-handed thread channel in series, with a mixed variable angle space between them. The other type of flow channel is radial. It is radiated from the inlet of the flow channel to the outlet through a number of flow channels. The flow channels of the former flow path unit and the corresponding flow channels of the next unit are staggered. Blending variable angle space. The multi-head spiral leakage flow structure includes a plurality of connection holes and spiral grooves. The plurality of connection holes are led out from the outlet end of the mixing flow channel to communicate with the spiral grooves, and the inner diameter of the spiral grooves gradually increases in the axial direction toward the outlet direction. The processing mechanism of the present invention is In the continuous molding process, the processed materials are subject to disordered dispersion mixing and orderly distributed mixing, and both are plasticized, and the product does not produce welding marks. The solid-liquid separation section of the screw separates the solid-liquid and strengthens the disordered dispersion and mixing ability of the material during the plasticizing process. The most important thing is that when these molten materials are squeezed into the mixing flow of the machine head in a fixed amount and constant pressure, they are forcibly and orderly mixed into a uniform temperature, homogeneous, and uniform pressure melt. When the melt passes through the leakage flow forming structure of the machine head, a plastic pipe without welding marks is obtained, which not only ensures the high resistance to the hoop pressure of the product, but also comprehensively improves the internal and appearance quality of the product. Due to the uniformity of the wall thickness of the plastic pipe product, it largely depends on the radial temperature difference of the material in the die part. The larger the radial temperature difference, the more uneven the wall thickness of the product, even if the gap between the die is not helpful. The head of the invention adopts a mixed flow channel, so that the radial temperature difference of the material becomes extremely small, so the uniform wall thickness of the product is controlled.

The invention uses a five-stage screw to efficiently melt plastic raw materials, so that the materials sent out do not carry solids, which strengthens the ability of materials to disperse and mix during the plasticization process, guarantees the quality and production capacity of the products, and the materials pass through the machine head. When mixing the flow channel, it is forced to mix in an orderly manner to form a melt that is uniform in humidity and pressure, and then passes through the leakage molding structure of the machine head to produce a product without welding marks, thereby greatly improving its internal quality. And appearance quality.

A third object of the present invention is to provide a coiling device for a corrugated fiber optic cable guide, so that the storage and transportation of the product occupy a small area and are convenient to use.

Brief description of the drawings

FIG. 1 is a schematic plan layout of the device of the present invention.

FIG. 2 is a schematic structural diagram of the guide 11, the composite head 12, and the rotary vacuum forming device 13 in FIG. 1,

Figure 3 is a diagram of a product made using the equipment of the present invention.

FIG. 4 is a cross-sectional view taken along the line AA of each product in FIG. 3, FIG. 02 00525

Figure 5 is a schematic structural diagram of a plastic pipe extruder.

Figure 6 is a schematic diagram of the screw of the extruder,

Figures 7, 7A, 7B, 8, 9 are schematic diagrams of each mixed flow channel.

Figure 10 is a schematic view of the straight head of a plastic pipe extruder.

FIG. 11 is a schematic diagram of a winding device.

Fig. 12 is an enlarged sectional view of X-X in Fig. 11 (clockwise to horizontal),

FIG. 13 is a Y-direction view in FIG. 11.

Code in the picture:

Fiber optic cable inner tube 1A inner tube bundle 3 single wall corrugated tube

A outer tube blank 4 corrugated multi-cavity cable guide

Plastic pipe extruder 5 A plastic pipe extruder 51 hopper

2 base 53 bushing 54 barrel

5 screw 57 diverter 58 fan

9 heater 510 rack 511 motor

12 coupling 513 reducer

Straight head 61 Distributed mixing runner 62 Head body

0 runner body 11 guide 111 fiber optic cable duct hole

2 composite head 122 movement 123 connection slot

24 spiral groove

3 rotary vacuum forming device 14 vacuum box 15 rotary sleeve

51 small hole 152 spiral channel 153 bottom diameter

6 Cooling and setting water tank 17 Dewatering device 18 Inkjet printer

9 tractor 20A cutting device 20 winding device

Way of carrying out the invention T / CN02 / 00525

Fig. 1 is a schematic diagram showing the arrangement of a corrugated multi-cavity optical cable production equipment according to the present invention, and Fig. 2 is a schematic view showing the structure of the guide 11, the composite head 12, and the rotary vacuum forming device 13 in Fig. 1. As shown in FIG. 1, the device of the present invention includes a plastic extruder 5, 5A, a composite head 12, a guide 11, and a rotary vacuum forming device 13. A composite head 12 is installed at an outlet end of the plastic extruder 5, and the composite head 12 is T-shaped, one end in the vertical direction is connected to the outlet of the plastic extruder 5, and the two lateral ends are connected to the extruder 5A, the guide 11, and the rotary vacuum forming device 13. As shown in Fig. 2, the guide 11 of the extruder 5 has a fiber optic cable guide hole 111 corresponding to the product shown in Figs. The composite head 12 includes a distributed mixing flow channel 61 and a multi-head leakage mechanism. One end of the mixing flow channel 61 is connected to the outlet of the plastic pipe extruder 5, and the other end is connected to a multi-head leakage mechanism vertically disposed thereon. The mechanism includes a movement 122. One end of the movement 122 is connected with the guide 11, and the center of the movement 122 has an axial through hole to pass through each optical cable conduit 1. The outer surface of the movement 122 has a connection groove 123 and a spiral groove 124 connected to the mixing flow channel 61. The other end of the core 122 is connected to the vacuum forming apparatus 13. The rotary vacuum forming device 13 includes a vacuum box 14 and a rotary sleeve 15 therein. The rotary sleeve 15 is driven by a speed regulating motor (not shown). The rotary sleeve 15 has a spiral channel 152 and a spiral channel 152. The bottom diameter 153 is adapted to the outer diameter of the inner tube bundle 1A, and the forming part of the rotating sleeve 15 has small holes 151 uniformly distributed. As shown in FIG. 1, a cooling and setting water tank 16, a dewatering device 17, an inkjet printer 18, a tractor 19, a cutting device 20A, and a winding device 20 are sequentially installed on the exit side of the rotary vacuum forming device 13.

When the equipment is used, first the optical fiber cable inner ducts 1 made of the extruder 5A are inserted into the guide holes of the guide 11, and each inner duct 1 is guided and arranged into an inner tube bundle 1A and passes through the movement, and is made of a plastic tube The material extruded by the extruder 5 enters the connecting groove 123 and the spiral groove 124 on the movement 122 through the distribution mixing channel 61, and is sent to the rotary sleeve 15 in the rotary vacuum device 13 through the outlet, and is sent out from the spiral channel 152 Is coated on the outside of the inner tube bundle 1A. After When the spiral channel 152 is used, the outer tube blank 3A is vacuum-shaped into a helical single-wall corrugated tube 3, and its structure is such that the crest is the outer diameter of the corrugated tube, and the trough is heat-sealed on the outer tangent circle of the inner tube bundle 1A, becoming corrugated. As shown in FIG. 4, the number of the optical fiber cable conduits 4 can be made from 4 to 9 tubes in FIG. 4 according to the use requirements. Then it is sent to the cooling water tank 16 by the rotating vacuum setting device 13, dewatered by the dewatering device 17, the logo is printed by the inkjet printer 18, and pulled by the tractor 19. After being sent to the winding device 20, it is rolled into a roll and cut by the cutting device 20A. . In this embodiment, the inner cable guide 1 used is made of a plastic pipe extruder 5A. Its structure is slightly different from that of the plastic except that the straight head 6 is straight and the T-shaped composite head 12 The tube extruder 5 is similar, and its structure is now described as follows:

FIG. 5 is a schematic diagram of the extruder 2A. The working process is that the frequency modulation motor 511 installed in the frame 510 drives the screw 55 to rotate through the coupling 512 and the reducer 513, and the material enters the drying bucket 51 and is removed. Moisture or bottom molecular volatiles are then conveyed forward by the screw. A number of heaters 59 and fans 58 are installed outside the barrel 54. The screw 55 squeezes and melts the material and sends it to the straight head 6 through the manifold 57. The flow channel body 61 is formed into an orderly mixture and extruded to form a plastic tube. As shown in FIG. 6, the screw 55 includes a solid-phase conveying section 551 with a feeding section, a compression section 552, a solid-liquid separation section 553, and a liquid-phase conveying section 554. On the right part of the screw 55, there is a non-return thread 555B and a cylindrical portion 555C. For preventing leakage, the spline part 556 is used for transmission. Both the solid-phase conveying section 551 and the solid-liquid separation section 553 are multi-threaded threads. In this embodiment, double-headed threads are used, and the double-threaded threads of the solid-liquid separation section 553 are mainly used. Thread 557 and auxiliary thread 557A. The starting point and end point of auxiliary thread 557A are overlapped with the main thread 557 to form a closed structure. The outer diameter D1 of the auxiliary thread 557A is slightly smaller than the outer diameter D of the main thread 557. The difference between D and D1 is used to pass the molten liquid, while blocking the unmelted solid material, so that it continues to be heated until it can be passed before melting. The diameter of the two threads in the solid-phase conveying section 551 is the same. One of the auxiliary threads 555A is open and does not overlap with the other main thread 555. 0525

There are transition sections 551A, 552A between the delivery section 551, the compression section 552, and the solid-liquid separation section 553. The material flows from the liquid phase conveying section 554 to 6 straight heads. As shown in FIG. 7, the mixing flow path 61 on the head body 62 is spiral, and the left spiral 61B and the right spiral 61C are alternately connected in series, so that the flow is divided and shifted in the flow, and the hook is mixed, as shown in FIG. 7A. Three views of the left spiral unit 61B, FIG. 7B is three views of the right spiral unit 61C, and the left and right spiral units can be twisted with a steel sheet. As shown in FIG. 8, the flow channel 61 on the head body 62 is double-spiral. The double-left spiral 61F (same as 61B) flow channel and the double-right spiral 61E (same as 61C) flow channel are alternately connected in series to perform the shunt shift. There is a convergent variable angle space 61H between the two, so that the confluent and mixed logistics can change the angle and increase the average degree of mixing. FIG. 9 shows another form. The flow path 61 is a self-contained type. It is concentrated at the inlet of the flow path and radiates to the outlet through a number of flow paths. The flow path 61N in the former flow path unit 61K and the next unit 61L The directions of the corresponding shunt channels 61N are staggered, and there is a confluence angle space 61M between two adjacent flow channel units 61K and 61L. As shown in FIG. 10, the straight head head body 62 has a multi-head spiral groove rotating leakage structure, including a plurality of connection holes 66 and a spiral groove 67, and a plurality of connection holes 66 are led out from the left end of the mixing flow channel 61 and communicate with the spiral groove 67. The inner diameter dl of the spiral groove 67 gradually increases along the axial direction toward the left exit direction. Under the rotation pressure of the screw 5, the material flows out through the compression sleeve 63 and the flow channel 64 in the die 65 to form a plastic optical cable inner duct 1.

Figures 11, 12, and 13 show the winding device. 20 includes a winding mechanism 25 and a winding mechanism 27. The winding mechanism 25 is mounted on a seat 278 on the side of the winding mechanism 27. As shown in Figure 12, the winding mechanism The mechanism 25 includes a fixing plate 251, a screw 253, a clamping plate 254, a guide roller 256, a nut 257, and a guide rod 258. The two fixing plates 251 are respectively assembled on the two base bodies 278, and a screw 253 and A guide rod 258 is provided with a nut 257 on the outer surface of the screw 253, and two clamping plates 254 are provided on both sides of the nut 257. Each clamping plate 254 has two through holes 259, which are respectively sleeved on the screw 253 and the guiding rod 258, and outside the nut 257. Bearing on surface N02 / 00525

255 sets have 256 guide rollers. As shown in FIG. 13, the winding mechanism 27 includes a seat body 278, a backing plate 277, a thimble assembly 275, a winding roller 273, and a winding assembly 271; the thimble assembly 275 and the winding assembly 271 are respectively installed in two symmetrically arranged seats On the body 278, a pad plate 277 is placed between the two seat bodies 278. When the take-up roller 273 is located on the pad plate 277, the cross head 272 of the take-up assembly is aligned with the cross hole at one end of the take-up roller, and the thimble is aligned. The ejector pin 274 in the assembly 275 is aligned upward with the ejector pin hole at the other end of the take-up roller 273.

In use, as shown in FIG. 11, the inner tube 4 is sent to the guide winding mechanism 25 through the supporting roller 22, the pressure roller 23, and the swing roller 24. As shown in FIG. 12, the screw 253 is rotated by the power input at the right end of the screw 253. Due to the limitation of the guide rod 258, it cannot rotate with the screw 253, and can only move laterally. However, the guide roll 256 mounted on the nut 257 has the bearing 55 in the middle, and can be freely rotated to guide the product tube 4 in a lateral direction to guide the product tube 4 according to the guide direction and width of the guide roll 256. The rotation speed and direction of the screw 253, as shown in FIG. 13, in the winding mechanism 27, the cross head 272 in the winding assembly 271 is driven by the driving system 279 to rotate and wind, so that the product tube 4 is evenly wound around the winding roller 273. on. When the take-up roller 273 is installed, push it onto the pad 277. The height of the pad 277 is such that the tips of the cross heads 272 and thimble heads 274 on both sides are aligned with the upper positions of the center holes C at both ends of the take-up roller. When the hand wheel 276 pushes out the ejector needle 274, the cross ejector is pushed into the cross center hole of the take-up roller 273, so that the take-up roller 273 is lifted off the pad 277 and enters the working position. When removing, the ejector head 274 is returned, and the take-up roller 273 falls on the backing plate 277.

Possibility of industrial application

In summary, the structure of the present invention has the following advantages and is suitable for industrial applications.

1. The spiral single-wall corrugated pipe can be industrially produced, and its structure is a flexible single-wall corrugated pipe that is covered with multiple optical cable inner conduits. Compared with various existing pipes, this kind of The pressure resistance of the structure is greatly improved, and the structure can be connected to the outside and the inside at the same time. Due to the flexibility, the optical cable can be laid safely and reliably.

2. Ensure that the material is efficiently plasticized without solids and without welding marks. Due to the use of special screws and mixing channels, the molten materials are forcibly and orderly mixed into a homogeneous pressure and homogeneous melt, and then through the leakage molding of the composite head, products without melting marks can be produced, which greatly improves the product. The inherent quality and appearance quality of the products ensure the requirements of the corrugated fiber optic cable conduit on the load pressure.

3. The products can be stored in rolls, occupying a small area, convenient for lifting and transportation and storage.

4. As the unit production is used to ensure the shape accuracy of the product and increase productivity, reduce costs.

The corrugated multi-cavity optical cable duct produced by the corrugated multi-cavity optical cable duct production equipment of the present invention has been tested to have extremely high impact resistance, and the ring steel degree is above 40KN / m ² . And the installation is fast, safe and reliable.

Claims

Rights request

1. A corrugated multi-cavity optical cable duct production equipment, characterized in that it includes a plastic pipe extruder, a composite die, a guide, and a rotary vacuum forming device, and a composite die is installed at the exit end of the plastic pipe extruder The composite head is T-shaped, one end of which is vertically connected to the outlet of the plastic pipe extruder, and two ends of which are connected to the guide and the rotary vacuum forming device.

2. The corrugated multi-cavity optical cable duct production equipment according to claim 1, wherein the composite head includes a mixing flow path and a multi-head leakage mechanism, and one end of the mixing flow path is connected to the outlet of the plastic pipe extruder, The other end is connected to a multi-head leakage mechanism vertically arranged thereon. The multi-head leakage mechanism includes a movement, one end of which is connected to a guide, the movement has an axial through hole in the center, and an outer surface is provided with a mixing flow channel. The connecting groove and the spiral groove, and the other end of the movement is connected with a vacuum forming device.

3. The production equipment for a corrugated multi-cavity optical cable conduit according to claim 1, wherein the rotary vacuum forming device comprises a vacuum box and a rotary sleeve installed in the vacuum box, and a spiral channel is provided in the rotary sleeve, The bottom diameter of the channel with the spiral is adapted to the outer diameter of the inner tube bundle, and the forming part of the rotating sleeve has uniformly distributed small holes.

4. The corrugated multi-cavity optical cable duct production equipment according to claim 1, further comprising: a cooling and setting water tank, a dewatering device, an inkjet printer, a tractor, Cutting device, take-up device.

5. The corrugated multi-cavity optical cable duct production equipment according to claim 1, wherein the plastic pipe extruder comprises a screw, and the screw has a solid-phase conveying section and a compression section with a feeding section. , A solid-liquid separation section, and a liquid-phase transport section, the solid-phase transport section and the solid-liquid separation section have multiple threads, including a main thread and an auxiliary thread, and in the solid-liquid separation section, the starting point and the end point of the auxiliary thread are the same as the main thread Overlap to form a closed structure, the outer diameter of the auxiliary thread is less than The outer diameter of the main thread is at the outlet end of the screw, and has a head, which has a mixing flow channel and a multi-head leakage mechanism.

6. The corrugated multi-cavity optical cable duct production equipment according to claim 2 or 5, characterized in that: the mixed flow channel of the head or the composite head is a spiral type, alternately connected in series by left and right threads, or The double spiral type is composed of a double left-handed thread channel and a double right-handed thread channel in series, and has a mixed variable angle space between the two.

7. The corrugated multi-cavity optical cable duct production equipment according to claim 6, characterized in that: the spiral or double spiral mixed flow channel is twisted from a steel sheet.

8. The corrugated multi-cavity optical cable duct production equipment according to claim 2 or 5, characterized in that: the flow path on the head or the composite head is radial, and is radiated from the inlet of the flow channel through a plurality of branch channels to the At the exit, the direction of the shunt channel of the first-stage channel unit and the corresponding shunt channel of the next unit alternates, and there is a blending variable angle space between the two adjacent channel units.

9. The corrugated multi-cavity optical cable duct production equipment according to claim 5, characterized in that: the multi-head leakage structure on the handpiece comprises a plurality of connection holes and spiral grooves, each connection hole is led out from the mixing flow channel and is connected with the spiral The grooves communicate with each other, and the inner diameter of the spiral groove gradually increases in the axial direction toward the exit direction.

10. The equipment for producing a corrugated multi-cavity optical cable duct according to claim 4, wherein: the winding device comprises a winding mechanism and a winding mechanism, and the winding mechanism is installed on one side of the winding mechanism, The winding mechanism includes a fixing plate, a screw, a plywood, a guide roll, a nut, and a guide rod. A screw and a guide rod are installed between the two fixing plates, a nut is installed on the screw jacket, and a splint is installed on each side of the nut. There are two holes on the screw rod and the guide rod, and a guide winding roller is sleeved on the bearing outside the nut. The winding mechanism includes a seat body, a backing plate, a thimble assembly, a winding roller, and a winding assembly. The thimble assembly and the take-up assembly are respectively installed on two symmetrically arranged base bodies, and a pad is placed between the two bases. When the take-up roller is located on the pad, At this time, the cross-head of the take-up assembly and the cross-hole of one end of the take-up roll, and between the ejector pin of the ejector assembly and the take-up pin of the other end of the take-up roll are all aligned in an upper position.