Sheath extrusion equipment suitable for optical cable production process

Abstract

The invention relates to the technical field of cable sheath forming, and discloses sheath extrusion equipment suitable for an optical cable production process, which comprises a base, an extruder is arranged on the base, a cable penetrates through the extruder to form a sheath on the surface, and an extrusion head of the extruder can be replaced, so that sheath layers with different thicknesses can be formed; the winding machine is arranged on one side of the extruder and is used for winding the cable; the cooling system is arranged between the extruder and the winding machine and is used for cooling a sheath on the surface of the cable; the sheath extrusion equipment further comprises a heat preservation material barrel, the heat preservation material barrel is arranged on the top of the extruder, an air cylinder is arranged on the top of the heat preservation material barrel, and the output end of the air cylinder extends into the heat preservation material barrel and is provided with a sealing push disc. According to the sheath extrusion equipment suitable for the optical cable production process, when the moving speed of a cable in the extruder is increased, the flow of sheath materials in the extruder is synchronously increased, so that the sheath forming quality is guaranteed, and the situation that the local thickness is not uniform is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of cable sheath molding, and in particular to a sheath extrusion device suitable for use in the production process of optical cables. Background Art

[0002] Optical cable cables are usually composed of a central optical fiber core, optical fiber cladding, buffer layer, reinforcement layer and outer sheath. The sheath is the outer layer of the optical cable, which protects the optical fiber and other internal structures from the external environment. In the optical cable production process, the sheath extrusion equipment is used to apply a layer of sheath material to the outside of the optical cable. The sheath material can be various plastics, such as polyethylene (PE), polyurethane (PU), etc. These materials have excellent mechanical strength and corrosion resistance, and can protect the optical cable from physical damage and chemical corrosion. The extrusion equipment melts the plastic material through heating and pressure, and extrude it through a mold to form the sheath of the optical cable. The extruder pushes the molten raw plastic into the mold, and the sheath is formed by the shape of the mold. The molded sheath is cooled by the cooling system, and finally the optical cable is pulled out and reeled by the traction system.

[0003] However, as the winding roller reels the cable, the cable's movement speed will gradually increase. This is mainly because when the cable is wound onto the reel, the reel's diameter will gradually increase. With each rotation, the length of the cable wound by the winding roller will also increase. As the reel diameter increases, the length of the path that the winding roller travels through each rotation becomes longer. Therefore, the linear speed of the cable moving in the extruder will gradually increase, resulting in the following defects:

[0004] Sheath thickness: During the sheath extrusion process, the thickness of the sheath is usually related to the moving speed of the cable and the material flow of the extruder. If the cable moving speed increases and the material flow of the extruder is not properly adjusted, the sheath thickness will become thinner because the extrusion speed of the sheath material cannot keep up with the moving speed of the cable.

[0005] Uniformity: Changes in moving speed result in uneven distribution of the sheath material on the optical cable, which affects the overall uniformity and consistency of the sheath. If the speed changes quickly, the sheath material may not be able to evenly wrap the optical fiber bundle, resulting in local uneven thickness of the sheath. Summary of the invention

[0006] In view of the problem in the prior art that as the reel is wound, the linear speed of the cable moving in the extruder gradually increases, resulting in thinner sheath thickness, a sheath extrusion device suitable for the production process of optical cables is proposed.

[0007] The present application provides a sheath extrusion device suitable for use in the production process of optical cables, the purpose of which is to automatically adjust the material flow of the extruder according to the cable movement speed, and to apply a circumferentially uniform rolling pressure to the cable sheath in transit, so that the sheath is more firmly and evenly coated on the cable, thereby achieving the solidification of the cable sheath.

[0008] The technical solution of the present invention is: a sheath extrusion device suitable for use in the production process of optical cables, comprising:

[0009] A base, wherein an extruder is arranged on the base, and the cable passes through the extruder to form a sheath on the surface, and the extrusion head of the extruder is replaceable, so as to form sheath layers of different thicknesses;

[0010] A winder, arranged on one side of the extruder, for winding the cable;

[0011] The cooling system is installed between the extruder and the winder to cool the sheath on the cable surface;

[0012] The sheath extrusion equipment also includes an insulation barrel, which is arranged on the top of the extruder, and a cylinder is arranged on the barrel top of the insulation barrel, and the output end of the cylinder extends into the insulation barrel and is provided with a sealing push plate;

[0013] A support frame, wherein the support frame is arranged on the cooling system through a connecting column, a tachometer wheel is rotatably arranged in the support frame, and the tachometer wheel abuts against the cable, and the movement of the cable drives the tachometer wheel to rotate;

[0014] A magnet and a reed switch, wherein the magnet is arranged on the side wall of the speed measuring wheel, and the reed switch is arranged on the inner side wall of the support frame;

[0015] A host code meter and a controller, wherein the host code meter is arranged on the outer wall of the support frame, and the controller is arranged on the cooling system. The host code meter is connected to the reed switch and the controller through wire signals, and the controller is connected to the cylinder through wire control.

[0016] Furthermore, a support column is provided at the inner bottom of the cooling system, a support tube is movably sleeved on the support column, a tension wheel is provided on the top of the support tube, the tension wheel is in contact with the cable, and the movement of the cable drives the tension wheel to rotate, a spring is jointly provided between the inner bottom of the cooling system and the bottom of the support tube, and the spring is movably sleeved on the support column.

[0017] Furthermore, the cooling system includes a circulating water tank arranged between the extruder and the winder, the lower end of the spring is arranged at the inner bottom of the circulating water tank, a front water storage plate and a rear water storage plate are symmetrically arranged in the circulating water tank, and two circumferential solid mechanisms are symmetrically arranged in the circulating water tank between the front water storage plate and the rear water storage plate, the cable passes through the two circumferential solid mechanisms in sequence, and the speed measuring wheel and the two circumferential solid mechanisms are connected through a transmission mechanism.

[0018] Furthermore, the circumferential solid-shaped mechanism includes two rotating frames arranged on the inner wall of the circulating water tank, a circumferential tube is arranged between the two rotating frames for common rotation, a plurality of solid-shaped components are arranged in a ring shape with the cable as the axis in the circumferential tube, and a circumferential compression component is commonly arranged on the plurality of solid-shaped mechanisms.

[0019] Furthermore, the solid component includes an extrusion plate movably arranged in the circumferential tube, the side of the extrusion plate close to the front water storage plate is arranged in an arc shape, a plurality of solid balls are evenly distributed in the horizontal direction on the side of the extrusion plate close to the cable, and a passive telescopic rod is symmetrically arranged between the extrusion plate and the circumferential tube, and the solid balls are rollingly arranged on the cable.

[0020] Furthermore, the transmission mechanism includes a support rod symmetrically arranged between the front water storage plate and the rear water storage plate with respect to the circumferential solid mechanism, a drive frame movably arranged in the circulating water tank between the front water storage plate and the rear water storage plate, the support rod movably penetrates the drive frame, one end of the tachometer wheel movably penetrates the support frame and is provided with a drive wheel, a drive pin is provided on the other side of the drive wheel, a drive bar is hingedly connected to the drive pin and the drive frame, and a drive groove adjacent to each other and in a wave shape is opened on the outer tube wall of the circumferential tube, push pins are symmetrically and movably arranged in the drive groove, and the other end of the push pin is arranged on the corresponding inner wall of the drive bar.

[0021] Furthermore, the circumferential compression component includes compression recesses evenly distributed along a horizontal straight line direction and arranged on a side of the extrusion plate away from the cable, and an elastic rope ring is commonly sleeved on multiple compression recesses located on the same vertical plane.

[0022] Furthermore, a feeding pipe is arranged on the outer barrel wall of the heat-insulating barrel, and a one-way valve is arranged on the feeding pipe.

[0023] Furthermore, water outlets are provided at the bottom of both ends of the circulating water trough located outside the front water storage plate and the rear water storage plate, a water inlet is provided at the bottom of the circulating water trough located between the front water storage plate and the rear water storage plate, and guide plates are symmetrically provided on the opposite sides of the front water storage plate and the rear water storage plate about the cable.

[0024] Beneficial effects of the present invention:

[0025] 1. By detecting the moving speed of the cable, when the cable is wound along with the winder and the moving speed in the extruder increases, the flow rate of the sheath material in the extruder is increased simultaneously, thereby ensuring the quality of the sheath formation and avoiding the occurrence of local uneven thickness.

[0026] 2. While the sheath on the cable surface is cooling and shaping, the solid ball rolls back and forth in the circumferential direction on the surface of the cable sheath in linear motion, thereby improving the solidification and forming effect and ensuring the uniformity of the sheath forming. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an overall three-dimensional schematic diagram of the present invention;

[0028] Figure 2 It is a three-dimensional schematic diagram of the connection part between the extruder and the heat-insulating barrel of the present invention;

[0029] Figure 3 for Figure 2 Middle BB section view;

[0030] Figure 4 It is a three-dimensional schematic diagram of the internal structure of the circulating water tank of the present invention;

[0031] Figure 5 A three-dimensional schematic diagram of the speed measuring wheel portion of the present invention Figure 1 ;

[0032] Figure 6 A three-dimensional schematic diagram of the speed measuring wheel portion of the present invention Figure 2 ;

[0033] Figure 7 for Figure 1 Middle AA section view;

[0034] Figure 8 is a three-dimensional schematic diagram of the circumferential solid structure of the present invention;

[0035] Fig. 9 for Figure 8 Middle CC section view;

[0036] Fig.10 It is a three-dimensional schematic diagram of the circumferential inner tube structure of the circumferential solid-shaped mechanism of the present invention.

[0037] In the figure:

[0038] 1. Base; 2. Extruder; 3. Insulated barrel; 4. Guide plate; 5. Cylinder; 6. Support frame; 7. Tachometer; 8. Magnet; 9. Reed switch; 10. Main unit meter; 11. Controller; 12. Support column; 13. Support pipe; 14. Tension wheel; 15. Spring; 16. Circulating water tank; 17. Front water storage plate; 18. Rear water storage plate; 19. Rotating frame; 20. Circumferential tube; 21. Extrusion plate; 22. Solid ball; 23. Passive telescopic rod; 24. Support rod; 25. Drive frame; 26. Drive wheel; 27. Drive pin; 28. Drive bar; 29. ​​Drive groove; 30. Push pin; 31. Compression concave block; 32. Elastic rope ring; 33. Feeding pipe; 34. One-way valve; 35. Sealing push plate. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0040] Example 1, reference Figure 1-6, which is the first embodiment of the present invention, provides a sheath extrusion device suitable for the production process of optical cables, including: a base 1, an extruder 2 is installed on the base 1, the cable to be formed with a sheath layer is passed through the extruder 2 to form a sheath on the cable surface, and the extruder head of the extruder 2 is replaceable, so that sheath layers of different thicknesses can be formed; a winder is arranged on one side of the extruder 2, and the cable with a sheath layer formed on the winding surface is wound; a cooling system is arranged between the extruder 2 and the winder to cool the sheath on the cable surface; the sheath extrusion device also includes an insulation barrel 3, and the sheath material in the molten state is added to the insulation barrel 3, the insulation barrel 3 is connected to the top of the extruder 2, and a cylinder 5 is installed on the barrel top of the insulation barrel 3, and the output end of the cylinder 5 extends into the insulation barrel 3 and is provided with a sealing push plate 35, the sealing push plate 35 and the insulation barrel 3 are sealingly and slidably connected, and the cylinder 5 pushes the sealing push plate 35 to move downward in the insulation barrel 3, and the sheath material in the insulation barrel 3 is squeezed, so that the sheath material enters the extruder 2; Support frame 6, support frame 6 is connected to the cooling system through a connecting column, a tachometer wheel 7 is rotatably connected inside the support frame 6, and anti-skid patterns are arranged on the surface of the tachometer wheel 7 to increase the friction between the tachometer wheel 7 and the surface of the cable sheath, and the tachometer wheel 7 abuts against the cable, and the movement of the cable drives the tachometer wheel 7 to rotate; magnet 8 and reed switch 9, magnet 8 is connected to the side wall of the tachometer wheel 7, and the reed switch 9 is connected to the inner wall of the support frame 6 at the position corresponding to the magnet 8, and when the cable moves, the tachometer wheel 7 is driven to rotate, thereby driving the tachometer wheel The magnet 8 on 7 rotates, and when the magnet 8 is close to the reed switch 9, the reed switch 9 will turn on the circuit. Conversely, when the magnet 8 is away from the reed switch 9, the reed switch 9 will disconnect the circuit; the host code meter 10 and the controller 11, the host code meter 10 is installed on the outer wall of the support frame 6, and the controller 11 is installed on the cooling system. The host code meter 10 is connected to the reed switch 9 and the controller 11 through wire signals, and the controller 11 is connected to the cylinder 5 through wire control, and the electrical equipment of the entire device is powered by an external power supply.

[0041] Specifically, when the cable passes through the extruder 2, a sheath is formed on its surface, and then enters the cooling system to cool the sheath layer. As the cable is reeled up by the reel, the cable moves in the cooling system, driving the speed measuring wheel 7 to rotate. Each time the speed measuring wheel 7 rotates one circle, it will periodically approach the reed switch 9 once. The reed switch 9 transmits a signal to the host code meter 10 to obtain the rotation speed of the speed measuring wheel 7. The host code meter 10 transmits the rotation speed of the speed measuring wheel 7 to the controller 11, thereby obtaining the moving speed Y of the cable. As the number of cables wound up on the reel increases, the diameter becomes larger, and the winding speed gradually increases, the controller 11 obtains the increasingly faster cable movement signal, controls the cylinder 5 to increase the output speed of the sealing push plate 35 during the downward stroke, increases the extrusion force on the material in the insulation barrel 3, thereby increasing the flow rate of the material entering the extruder 2, thereby ensuring the quality of the sheath formation and avoiding the occurrence of local uneven thickness.

[0042] Set a threshold value X, where X is the moving speed of the cable. When Y < X, the controller 11 controls the cylinder 5 to squeeze downward at a constant speed; when Y ≥ X, the controller 11 gradually increases the output speed of the cylinder 5 during the downward stroke according to the increase of the Y value.

[0043] Refer to Figure 1 and Figure 4 Refer to

[0044] Specifically, when the cable is slack during the winding and movement process, the compressed spring 15 will push the support tube 13 upward, thereby driving the tension wheel 14 to move, ensuring the stability of the cable tension during the movement process.

[0045] Refer to Figure 1-3 Refer to

[0046] Specifically, the molten sheath material is pressed into the feeding pipe 33, pushes open the one-way valve 34 and then is supplemented into the heat preservation barrel 3.

[0047] During use, as the winding machine winds, the moving speed of the cable becomes faster, and the rotation speed of the speed measuring wheel 7 also continuously increases. Every time the speed measuring wheel 7 rotates one circle, it will periodically approach the reed switch 9 once. The reed switch 9 transmits the signal to the host meter 10 to obtain the rotation speed of the speed measuring wheel 7. The host meter 10 transmits the rotation speed of the speed measuring wheel 7 to the controller 11. The controller 11 obtains the moving speed of the cable. While the moving speed of the cable increases, it controls the cylinder 5 to increase the output speed, increasing the extrusion pressure on the material in the heat preservation barrel 3, thereby increasing the flow rate of the material entering the extruder 2, thus ensuring the quality of the sheath formation and avoiding the situation of uneven thickness in some parts.

[0048] Embodiment 2, refer to Figure 1 and Figure 7, which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the cooling system includes a circulating water tank 16 arranged between the extruder 2 and the winder, the lower end of the spring 15 is connected to the inner tank bottom of the circulating water tank 16, a front water storage plate 17 and a rear water storage plate 18 are symmetrically connected in the circulating water tank 16, two circumferential solid-shaped mechanisms are symmetrically connected in the circulating water tank 16 located between the front water storage plate 17 and the rear water storage plate 18, the cable passes through the two circumferential solid-shaped mechanisms in sequence, the speed measuring wheel 7 and the two circumferential solid-shaped mechanisms are connected by a transmission mechanism, the bottoms of both ends of the circulating water tank 16 located outside the front water storage plate 17 and the rear water storage plate 18 are connected with water outlets, the bottoms of the circulating water tank 16 located inside the front water storage plate 17 and the rear water storage plate 18 are connected with a water inlet, the opposite sides of the front water storage plate 17 and the rear water storage plate 18 are provided with guide plates 4 with respect to the cable, and the front water storage plate 17 and the rear water storage plate 18 are provided with recesses for the cable to move through.

[0049] Specifically, when the tachometer wheel 7 rotates, force is applied to the two circumferential solid mechanisms through the transmission mechanism. The two circumferential solid mechanisms perform circumferential compression on the surface of the cable sheath. External cold water is continuously replenished into the circulating water tank 16 through the water inlet to store water, so as to cool the cable surface sheath in this section. The water that absorbs heat then passes through the recesses on the front water storage plate 17 and the rear water storage plate 18, and is then discharged through the water outlets on both sides. The water between the front water storage plate 17 and the rear water storage plate 18 is guided by the guide plate 4, so that the water flows out in a directional manner, thereby improving the cooling effect on the cable surface sheath.

[0050] Reference Figure 7-8 The circumferential solid-shaped mechanism includes two rotating frames 19 connected to the inner wall of the circulating water tank 16, and a circumferential tube 20 is arranged between the two rotating frames 19 through two bearings for common rotation. A plurality of solid-shaped components are arranged in a ring shape with the cable as the axis in the circumferential tube 20, and a circumferential compression component is commonly arranged on the plurality of solid-shaped mechanisms.

[0051] Specifically, the plurality of solid components in the circumferential tube 20 are squeezed by the circumferential pressing component, so that the sheath cooled on the cable surface is circumferentially pressed, so that the solidification effect is improved and the uniformity of the sheath forming is ensured.

[0052] Reference Figure 8-10 The solid component includes an extrusion plate 21 movably arranged in the circumferential tube 20. The side of the extrusion plate 21 close to the front water storage plate 17 is set to an arc shape. The side of the extrusion plate 21 close to the cable is evenly distributed in the horizontal direction and inlaid with multiple rolling solid balls 22. A passive telescopic rod 23 is symmetrically connected between the extrusion plate 21 and the circumferential tube 20, and the solid balls 22 are rollingly connected to the cable.

[0053] Specifically, the arc position of the extrusion plate 21 facilitates the cable to pass through the circumferential solidification mechanism. Under the pressure of the circumferential compression component, the solidification balls 22 on the multiple extrusion plates 21 are squeezed onto the sheath surface of the cable, thereby improving the solidification effect.

[0054] Reference Figure 1 , Figure 4 and Figure 7-8 The transmission mechanism includes a support rod 24 symmetrically connected between the front water storage plate 17 and the rear water storage plate 18 with respect to the circumferential solid mechanism, a driving frame 25 is movably arranged in the circulating water tank 16 between the front water storage plate 17 and the rear water storage plate 18, the support rod 24 movably penetrates the driving frame 25, one end of the speed measuring wheel 7 movably penetrates the support frame 6 and is provided with a driving wheel 26, a driving pin 27 is arranged on the other side of the driving wheel 26, a driving bar 28 is hingedly connected to the driving pin 27 and the driving frame 25, and a driving groove 29 adjacent to each other and in a wave shape is opened on the outer tube wall of the circumferential tube 20, a pushing pin 30 is symmetrically and movably arranged in the driving groove 29, and the other end of the pushing pin 30 is arranged on the corresponding inner side wall of the driving bar 28.

[0055] Specifically, the driving frame 25 is supported to a certain extent by the support rod 24. When the speed measuring wheel 7 rotates, it drives the driving wheel 26 to rotate synchronously. Then, through the transmission of the driving pin 27 and the driving bar 28, the driving frame 25 is pulled to perform reciprocating horizontal motion on the support rod 24, thereby driving the pushing pin 30 on the driving frame 25 to move back and forth in the driving groove 29 in the circumferential tube 20, thereby pushing the circumferential tube 20 to reciprocate circumferentially in the rotating frame 19, and then the extrusion plate 21 is driven to perform synchronous circumferential motion through the passive telescopic rod 23, so that the solid ball 22 is reciprocated circumferentially rolled on the surface of the cable sheath moving along the linear motion, so that the solidification forming effect is improved.

[0056] Reference Fig.10 The circumferential compression component includes compression recesses 31 evenly distributed along the horizontal straight line direction and connected to the side of the extrusion plate 21 away from the cable. An elastic rope ring 32 is commonly sleeved on multiple compression recesses 31 located on the same vertical plane, and the elastic rope ring 32 is in a deformed state.

[0057] Specifically, the restoring force of the elastic rope ring 32 applies an inward extrusion force to the compression concave block 31, thereby pushing the compression plate 21 to apply pressure in the direction of the cable.

[0058] During use, the cable passes through the circumferential tube 20, and under the action of the restoring force of the elastic rope ring 32, the compression concave block 31 pushes the extrusion plate 21, so that the solid ball 22 pushing the extrusion plate 21 is squeezed on the sheath surface of the cable, and the speed measuring wheel 7 rotates to drive the driving wheel 26 to rotate, and then through the transmission of the driving pin 27 and the driving bar 28, the driving frame 25 is pulled to perform reciprocating horizontal motion on the support rod 24, and the pushing pin 30 on the driving frame 25 moves back and forth in the driving groove 29 in the circumferential tube 20, thereby pushing the circumferential tube 20 to reciprocate circumferentially in the rotating frame 19, and then the extrusion plate 21 is driven to perform synchronous circumferential motion through the passive telescopic rod 23, so that the solid ball 22 is reciprocated circumferentially rolled on the surface of the cable sheath moving along the linear motion, so that the solidification forming effect is improved, and the uniformity of the sheath forming is ensured.

[0059] The remaining structures are the same as those of Example 1.

[0060] Based on Examples 1-2, the working principle of the present invention is as follows:

[0061] First, the head end of the wound cable to be released passes through the extruder 2, the circulating water tank 16 and the circumferential tube 20 in sequence, and then is fixed on the winder. The molten sheath material is added to the insulation barrel 3 through the feeding pipe 33. Then the entire sheath extrusion equipment is started, and the cylinder 5 pushes the sealing push plate 35 downward at a constant speed to extrude the sheath material in the insulation barrel 3. The sheath material enters the extruder 2, and a sheath is formed on the surface of the cable through the extruder 2. Then the cable with the sheath enters the circulating water tank 16 for cooling and is wound by the winder. As the winder is wound, the cable moves faster, and the speed measuring wheel The rotation speed of 7 is also increasing. Every time the tachometer wheel 7 rotates one circle, it will periodically approach the reed switch 9 once. The reed switch 9 transmits the signal to the host code meter 10 to obtain the rotation speed of the tachometer wheel 7. The host code meter 10 transmits the rotation speed of the tachometer wheel 7 to the controller 11. The controller 11 obtains the moving speed of the cable. When the cable moving speed is Y≧X, the controller 11 controls the cylinder 5 to increase the output speed of the sealing push plate 35, increases the extrusion force on the material in the insulation barrel 3, thereby increasing the flow rate of the material entering the extruder 2, thereby ensuring the quality of the sheath formation and avoiding the occurrence of local uneven thickness.

[0062] While the sheath on the cable surface is cooling, under the action of the restoring force of the elastic rope ring 32, the compression concave block 31 pushes the extrusion plate 21, so that the solid ball 22 pushing the extrusion plate 21 is squeezed on the sheath surface of the cable, and the speed measuring wheel 7 rotates to drive the driving wheel 26 to rotate, and then through the transmission of the driving pin 27 and the driving bar 28, the driving frame 25 is pulled to perform reciprocating horizontal motion on the support rod 24, and the pushing pin 30 on the driving frame 25 moves back and forth in the driving groove 29 in the circumferential tube 20, thereby pushing the circumferential tube 20 to reciprocate circumferentially in the rotating frame 19, and then the extrusion plate 21 is driven to perform synchronous circumferential synchronous motion through the passive telescopic rod 23, so that the solid ball 22 is reciprocated circumferentially rolled on the surface of the cable sheath moving along the linear motion, so that the solidification forming effect is improved, and the uniformity of the sheath forming is ensured.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A sheath extrusion device suitable for use in the production process of optical cables, comprising: A base (1), wherein an extruder (2) is arranged on the base (1), and the cable passes through the extruder (2) to form a sheath on the surface; A winder, arranged on one side of the extruder (2), for winding the cable; A cooling system is arranged between the extruder (2) and the winder to cool the sheath on the surface of the cable; The sheath extrusion device is characterized in that: the insulation barrel (3) is further provided with an insulation barrel (3), the insulation barrel (3) is arranged on the top of the extruder (2), a cylinder (5) is arranged on the barrel top of the insulation barrel (3), the output end of the cylinder (5) extends into the insulation barrel (3) and is provided with a sealing push plate (35); A support frame (6), the support frame (6) being arranged on the cooling system via a connecting column, a tachometer wheel (7) being rotatably arranged inside the support frame (6), and the tachometer wheel (7) being in contact with a cable, and the movement of the cable driving the tachometer wheel (7) to rotate; A magnet (8) and a reed switch (9), wherein the magnet (8) is arranged on the side wall of the speed measuring wheel (7), and the reed switch (9) is arranged on the inner side wall of the support frame (6); A host code meter (10) and a controller (11), wherein the host code meter (10) is arranged on the outer wall of the support frame (6), and the controller (11) is arranged on the cooling system. The host code meter (10) is connected to the reed switch (9) and the controller (11) via wire signals, and the controller (11) is connected to the cylinder (5) via wire control.

2. The sheath extrusion device applicable to the production process of optical cables according to claim 1 is characterized in that: The inner bottom of the cooling system is provided with a support column (12), a support tube (13) is movably sleeved on the support column (12), a tension wheel (14) is provided on the top of the support tube (13), the tension wheel (14) is in contact with the cable, and the movement of the cable drives the tension wheel (14) to rotate, and a spring (15) is provided between the inner bottom of the cooling system and the bottom of the support tube (13), and the spring (15) is movably sleeved on the support column (12).

3. The sheath extrusion device for use in the production process of optical cables according to claim 2 is characterized in that: The cooling system comprises a circulating water tank (16) arranged between the extruder (2) and the winder, the lower end of the spring (15) is arranged at the inner tank bottom of the circulating water tank (16), a front water storage plate (17) and a rear water storage plate (18) are symmetrically arranged in the circulating water tank (16), two circumferential solid-shaped mechanisms are symmetrically arranged in the circulating water tank (16) between the front water storage plate (17) and the rear water storage plate (18), the cable passes through the two circumferential solid-shaped mechanisms in sequence, and the speed measuring wheel (7) and the two circumferential solid-shaped mechanisms are connected through a transmission mechanism.

4. The sheath extrusion device for use in the production process of optical cables according to claim 3 is characterized in that: The circumferential solid-shaped mechanism comprises two rotating frames (19) arranged on the inner wall of the circulating water tank (16); a circumferential tube (20) is arranged between the two rotating frames (19) for common rotation; a plurality of solid-shaped components are arranged in a ring shape in the circumferential tube (20) with the cable as the axis; and a circumferential pressing component is commonly arranged on the plurality of solid-shaped mechanisms.

5. The sheath extrusion device for use in the production process of optical cables according to claim 4, characterized in that: The solid component comprises an extrusion plate (21) movably arranged in the circumferential tube (20); a side of the extrusion plate (21) close to the front water storage plate (17) is arranged in an arc shape; a side of the extrusion plate (21) close to the cable is evenly distributed with a plurality of solid balls (22) in the horizontal direction; a passive telescopic rod (23) is symmetrically arranged between the extrusion plate (21) and the circumferential tube (20); and the solid balls (22) are rollingly arranged on the cable.

6. The sheath extrusion device for use in the production process of optical cables according to claim 4, characterized in that: The transmission mechanism comprises a support rod (24) symmetrically arranged between the front water storage plate (17) and the rear water storage plate (18) with respect to the circumferential solid structure; a drive frame (25) is movably arranged in the circulating water tank (16) between the front water storage plate (17) and the rear water storage plate (18); the support rod (24) movably penetrates the drive frame (25); one end of the speed measuring wheel (7) movably penetrates the support frame (6) and is provided with a drive wheel (26); a drive pin (27) is arranged on the other side of the drive wheel (26); a drive bar (28) is hingedly connected to the drive pin (27) and the drive frame (25); an outer tube wall of the circumferential tube (20) is provided with a wave-shaped drive groove (29) adjacent to each other end to end; a push pin (30) is symmetrically movably arranged in the drive groove (29), and the other end of the push pin (30) is arranged on the corresponding inner side wall of the drive bar (28).

7. The sheath extrusion device for use in the production process of optical cables according to claim 5, characterized in that: The circumferential compression component comprises compression recesses (31) evenly distributed along a horizontal straight line direction on a side of the extrusion plate (21) away from the cable, and a plurality of compression recesses (31) located on the same vertical plane are collectively sleeved with an elastic rope ring (32).

8. The sheath extrusion device for use in the production process of optical cables according to claim 1, characterized in that: A feeding pipe (33) is arranged on the outer barrel wall of the heat-insulating barrel (3), and a one-way valve (34) is arranged on the feeding pipe (33).

9. The sheath extrusion device for use in the production process of optical cables according to claim 3, characterized in that: Water outlets are provided at the bottom of both ends of the circulating water tank (16) located outside the front water storage plate (17) and the rear water storage plate (18), a water inlet is provided at the bottom of the circulating water tank (16) located between the front water storage plate (17) and the rear water storage plate (18), and guide plates (4) are symmetrically provided on the opposite sides of the front water storage plate (17) and the rear water storage plate (18) with respect to the cable.

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