Extrusion molding equipment for processing cable protection tubes

Abstract

The present invention relates to the technical field of cable protection tube processing, specifically to an extrusion molding device for processing cable protection tubes, comprising an extrusion device, a cooling box installed on the right side of the die head of the extrusion device, a post-cooling part installed on the inner side of the cooling box, and three sizing rings, three active rings and a plurality of driven components provided on the inner side of the cooling box. The present invention provides an extrusion molding device for processing cable protection tubes, which has the advantages of improving cooling uniformity, and can adjust the spray angle of the spray nozzle relative to the cable protection tube as needed, so that the water flows along the surface of the tube at a certain angle, expanding the cooling coverage, and making the impact force of the spray water relatively dispersed, with less impact on the surface of the tube, and has the advantages of being divided into front and rear sections for differential cooling, so that the surface temperature of the tube is quickly reduced in the area where the tube just enters the cooling box, and the spray intensity is reduced in the later area of ​​the tube cooling, thereby reducing the cooling stress.

Description

Technical Field

[0001] The invention relates to the technical field of cable protection tube processing, in particular to extrusion molding equipment for processing cable protection tubes. Background Art

[0002] As we all know, cable protection tubes are pipes used to protect cables and are widely used in power engineering, communication engineering and other fields. During production and processing, they are usually completed by an extrusion molding machine, which allows the heated and molten plastic and other polymer materials to pass through a die of a specific shape under pressure, thereby continuously extruding the cable protection tube and cutting it after cooling, sizing and shaping.

[0003] When forming cable protection tubes, extrusion forming equipment is required. The existing technology has the following problems: after the tube is extruded from the extruder die head, it is usually necessary to quickly cool and shape it. However, when the cooling in the existing technology is directly sprayed through the bamboo tube and the nozzle, the spraying point is relatively concentrated, and different parts of the tube surface receive different amounts of cooling water, resulting in different cooling rates. The side that cools faster will shrink first, while the side that cools slower is still at a relatively high temperature and softer state. This uneven shrinkage will generate cooling stress, which may cause the tube to deform into an elliptical shape. In the case of too thin tube walls, the spraying vertically toward the tube surface may cause the incompletely solidified tube to deform due to its own impact.

[0004] Based on the above-mentioned situation, we found that it is difficult for the existing cable protection tube extrusion molding equipment to avoid the above problems at the same time. Therefore, we proposed a method to cover the entire circumference of the tube through a surrounding spray structure to improve the cooling uniformity. At the same time, the spray angle of the spray nozzle relative to the cable protection tube can be adjusted as needed, so that the water flow flows along the surface of the tube at a certain angle, expands the cooling coverage, reduces the cooling blind area, and makes the impact force of the spray water flow relatively dispersed, with less impact on the surface of the tube. In addition, the method has the function of different cooling in the front and rear sections, so that the spray intensity is greater in the area where the tube just enters the cooling box, so as to quickly reduce the surface temperature of the tube. In the later cooling area of ​​the tube, the spray intensity is reduced, so that the tube cools slowly and the cooling stress is reduced. Summary of the Invention

[0005] In response to the shortcomings of the prior art, the present invention provides an extrusion molding equipment for processing cable protection tubes, which has the function of covering the entire circumference of the tube through a surrounding spray structure to improve the cooling uniformity. At the same time, the spray angle of the spray nozzle relative to the cable protection tube can be adjusted as needed, so that the water flow flows at a certain angle along the surface of the tube body, thereby expanding the cooling coverage range and reducing the cooling blind area. At the same time, the impact force of the spray water flow is relatively dispersed, and the impact on the surface of the tube is relatively small. In addition, the equipment has the advantages of being divided into front and rear sections for differential cooling, so that the spray intensity is greater in the area where the tube has just entered the cooling box, so as to quickly reduce the surface temperature of the tube, and in the later area of ​​the tube cooling, the spray intensity is reduced, so that the tube is cooled slowly, thereby reducing the cooling stress.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: an extrusion molding device for processing cable protection tubes, comprising an extrusion device, a cooling box installed on the right side of the die head of the extrusion device, a post-cooling unit installed inside the cooling box, and three sizing rings, three driving rings and a plurality of driven components provided inside the cooling box;

[0007] The driven assembly includes an angle bracket and a front cold nozzle, the left side of the angle bracket is fixedly connected to a limit plate, the left side of the limit plate is fixedly connected to a side plate, two inclined plates are provided between the angle bracket and the side plate, the two inclined plates are rotatably connected to the angle bracket and the side plate on one side close to the angle bracket and the side plate, the inclined plate is installed on the side close to the front cold nozzle and the front cold nozzle, and the inner side of the inclined plate is movably connected to a rotating sleeve;

[0008] The side of the angle bracket close to the sizing ring is rotatably connected to the sizing ring, the left side of the active ring is fixedly connected to a push rod, the left side of the push rod is movably connected to the angle bracket, and the inner side of the rotating sleeve is rotatably connected to the limiting ring.

[0009] By adopting the above technical solution, an extrusion device is set up to melt the raw material and extrude it through a die head. After extrusion, it will directly fall into the interior of the cooling box, and after passing through the active ring and the sizing ring for preliminary cooling and forming, it will be further shaped and cooled through the post-cooling part, and finally output from the right side of the cooling box to the subsequent traction and cutting equipment. Before operation, the position of the active ring can be adjusted according to the radius of the cable protection tube. When the active ring approaches the sizing ring, the push rod will push the angle bracket of the driven component to rotate and tilt along the sizing ring. At the same time, the front cooling nozzle at its end will approach or move away from the cable The surface of the cable protection tube is provided with multiple follower components in a ring shape surrounding the outside of the cable protection tube, so it can cover the entire outer circumference of the cable protection tube, so that it is cooled evenly, and it is not easy to have quality problems caused by different cooling rates on a single cross-section. At the same time, the inclined plate can be rotated between the angle bracket, the limit plate and the side plate as needed to tilt the inclined plate and the front cold nozzle connected to it, so that the spray angle is adjusted so that it will not be perpendicular to the cable protection tube. While reducing the impact force, it can also further increase the coverage area during spray cooling, thereby improving the shaping quality and the cooling efficiency of the cable protection tube.

[0010] The present invention is further configured as follows: the after-cooling part includes a cooling pipe and a after-cooling nozzle, the bottom of the inner side of the cooling box is fixedly connected to an empty frame, the left side of the empty frame is rotatably connected to a plurality of water baffles through a damping shaft, a leakage hole is opened on the inner side of the water baffle, and the side of the cooling pipe away from the after-cooling nozzle is externally connected to a cooling water pump.

[0011] By adopting the above technical solution, a cooling pipe is set up to adjust the position and spray angle of the rear cooling nozzle and supply water for spraying. The empty frame is used to install the water baffle. When the water flow is sprayed onto the surface of the water baffle, it will be guided along its inclined surface, while reducing the impact force. Compared with the spraying of the front cooling nozzle, its cooling efficiency is reduced. However, since rapid cooling has been carried out at the front cooling nozzle, the pipe is cooled slowly at the rear cooling nozzle, which can reduce the cooling stress.

[0012] The present invention is further configured as follows: two connecting plates are fixedly connected between opposite sides of the two inclined plates, a sliding groove is provided on the inner side of the inclined plates, a sliding pin is movably connected to the inner side of the sliding groove, and the sliding pin is fixedly connected to the rotating sleeve on one side close to the rotating sleeve.

[0013] By adopting the above technical solution, two connecting plates are set up to further connect the two inclined plates, while guiding and protecting the pipes passing through the inside. The sliding pin is set up to connect the rotating sleeve and the inclined plate, so that the rotating sleeve can be displaced and rotated to a certain extent relative to the inclined plate.

[0014] The present invention is further configured as follows: the side of the angle bracket close to the sizing ring is fixedly connected to the sizing ring through a rotating shaft, a limiting groove is provided on the right side of the angle bracket, and the inner side of the limiting groove is movably connected to the left side of the push rod through the rotating shaft.

[0015] By adopting the above technical solution, a rotating shaft is set to connect the sizing ring and the angle bracket, so that the angle bracket can be rotated along the sizing ring to facilitate angle adjustment. The limit groove is connected to the push rod through the rotating shaft to facilitate pushing and pulling the angle bracket to rotate along the sizing ring when the push rod moves horizontally.

[0016] The present invention is further configured as follows: the front side of the top angle bracket and the rear side of the bottom angle bracket are both fixedly connected to a structural frame, an electric cylinder is installed on the inner side of the structural frame, the telescopic end of the electric cylinder is fixedly connected to an arc block, and the front side of the outer side of the top rotating sleeve and the rear side of the outer side of the bottom rotating sleeve are both fixedly connected to a force-bearing plate.

[0017] By adopting the above technical solution, a structural frame is set up in conjunction with the electric cylinder. When it is necessary to adjust the tilting plate and the spray angle of the front cold nozzle connected thereto, the force-bearing plate can be pushed by the electric cylinder and the arc block, causing the top and bottom rotating sleeves to generate axial force under the connection of the limit ring, thereby rotating and tilting along the axial direction perpendicular to the cable protection tube. The tilting frame connected to the rotating sleeve by the sliding pin rotates along the connection between the angle frame and the side plate after being pushed and pulled by the rotating sleeve, thereby achieving the effect of tilting the spray angle of the front cold nozzle.

[0018] The present invention is further configured as follows: the two inclined plates are fixedly connected to the corner frame and the side plate on one side thereof; and the two torsion springs are fixedly connected to the corner frame and the side plate on one side thereof.

[0019] By adopting the above technical solution, a torsion spring is set up so that the tilting piece can always maintain its initial position when it is not subjected to the thrust of the rotating sleeve. When the tilting piece is pushed to tilt, the torsion spring stores force, and when the force stops, the structure rebounds and resets, which is convenient for subsequent use.

[0020] The present invention is further configured as follows: the rotating sleeve and the limiting ring are both hollow, the top and bottom of the rotating sleeve are open, a supply hose is installed on the inner side of the front cold nozzle, and the side of the supply hose away from the front cold nozzle passes through the two connecting plates and the inner side of the rotating sleeve in sequence, and is installed with a distributor.

[0021] By adopting the above technical solution, a rotating sleeve is arranged to cooperate with the limiting ring, and the rotating sleeve and the limiting ring can rotate with each other. In addition to serving as a connecting part between the inclined plate and the limiting ring and a transmission component for adjusting the inclination, the hollow interior of the rotating sleeve can allow a hose for transporting cooling water to pass through. The distributor arranged cooperates with the hose to directly supply cooling water to the front cooling nozzle, and the cooling water is evenly supplied to the front cooling nozzle.

[0022] The present invention is further configured as follows: the right side of the distributor is fixedly connected to the angle bracket, the top of the distributor is fixedly connected to an input pipe, the input pipe is externally connected to a cooling water pump, the inner side of the cooling box is fixedly connected to a bracket, and the side of the bracket close to the sizing ring is fixedly connected to the sizing ring.

[0023] By adopting the above technical solution, an input pipe is provided to input cooling water into the interior of the distributor, and a bracket is used to fix the position of the sizing ring to prevent the structure from moving together with the driven component when it is pushed or pulled.

[0024] The present invention is further configured as follows: three guide rails are fixedly connected to the top of the rear side of the inner wall of the cooling box, the inner side of the right guide rail is rotatably connected to a screw rod, the inner sides of the two left guide rails are installed with a light rod, the right side of the right guide rail is externally connected to a control motor, the output end of the control motor is fixedly connected to the screw rod, the outer side of the screw rod is threadedly connected to a transmission block, the outer side of the light rod is slidably connected to two driven blocks, the front sides of the transmission block and the two driven blocks are respectively fixedly connected to the tops of the three active rings, the front side of the transmission block is fixedly connected to a linkage frame, and the linkage frame is fixedly connected to the front side of the driven block.

[0025] By adopting the above technical solution, by setting a guide rail and a screw rod, when the external control motor drives the screw rod to rotate, the transmission block moves along the right guide rail, and at the same time, the linkage frame pushes the driven block to move synchronously, so as to achieve the effect of synchronously pushing the three active rings to move horizontally.

[0026] The present invention is further configured as follows: a bracket is fixedly connected to the bottom of the inner side of the cooling box, and an air bag is installed on the top of the bracket.

[0027] By adopting the above technical solution, a bracket is set to install the airbag, and the airbag is used to lift and support the continuously moving cable protection tube, thereby reducing stress concentration caused by improper support, causing less damage to the tube surface, and leaving no obvious marks on the tube surface.

[0028] Compared with the prior art, the present invention provides an extrusion molding device for processing cable protection tubes, which has the following beneficial effects:

[0029] The extrusion molding equipment for processing the cable protection tube melts the raw material by setting an extrusion device and extrudes it through a die head. After extrusion, it will directly fall into the interior of the cooling box, and after passing through the active ring and the sizing ring for preliminary cooling and forming, it will be further shaped and cooled through the post-cooling part, and finally output from the right side of the cooling box to the subsequent traction and cutting equipment. Before the operation, the position of the active ring can be adjusted according to the radius of the cable protection tube. When the active ring approaches the sizing ring, the push rod will push the angle bracket of the driven component to rotate and tilt along the sizing ring. At the same time, the front cooling nozzle at its end will approach or It is the surface away from the cable protection tube. Since a plurality of driven components are arranged in a ring shape surrounding the outside of the cable protection tube, the entire outer circumference of the cable protection tube can be covered, so that it is cooled evenly, and it is not easy to have quality problems caused by different cooling rates on a single cross-section. At the same time, the inclined plate can be rotated between the angle bracket, the limit plate and the side plate as needed to tilt the inclined plate and the front cold nozzle connected to it, so as to adjust the spray angle not to be perpendicular to the cable protection tube. While reducing the impact force, it can also further increase the coverage area during spray cooling, thereby improving the shaping quality and the cooling efficiency of the cable protection tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the main structure of the present invention;

[0031] Figure 2 Schematic diagram of the internal structure of the cooling box in the present invention;

[0032] Figure 3 Schematic diagram of the connection of the sizing ring in the present invention;

[0033] Figure 4 Schematic diagram of the right structure of the sizing ring in the present invention;

[0034] Figure 5 This is a schematic diagram of the connection of the transfer sleeve in the present invention;

[0035] Figure 6 Schematic diagram of the movement of the driven component in the present invention;

[0036] Figure 7 It is a left side view of the sizing ring in the present invention;

[0037] Figure 8 Schematic diagram of the structure of the driven component in the present invention.

[0038] In the figure: 1. Extrusion device; 2. Cooling box; 3. After-cooling part; 301. Cooling pipe; 302. After-cooling nozzle; 303. Empty frame; 304. Water baffle; 4. Sizing ring; 5. Active ring; 6. Driven assembly; 61. Angle bracket; 62. Limiting plate; 63. Side plate; 64. Inclined plate; 65. Front cooling nozzle; 66. Rotary sleeve; 7. Push rod; 8. Limiting ring; 9. Connecting plate; 10. Sliding pin; 11. Structural frame; 12. Electric cylinder; 13. Arc block; 14. Force plate; 15. Torsion spring; 16. Supply hose; 17. Distributor; 18. Input pipe; 19. Bracket; 20. Guide rail; 21. Screw rod; 22. Polished rod; 23. Transmission block; 24. Driven block; 25. Linkage frame; 26. Bracket; 27. Airbag. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments 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 efforts are within the scope of protection of the present invention.

[0040] Example 1: Please refer to Figure 1-2 An extrusion molding device for processing a cable protection tube includes an extrusion device 1. A cooling box 2 is installed on the right side of the die head of the extrusion device 1. A post-cooling part 3 is installed inside the cooling box 2. Three sizing rings 4, three active rings 5 ​​and a plurality of driven components 6 are provided inside the cooling box 2.

[0041] The side of the angle bracket 61 close to the sizing ring 4 is rotatably connected to the sizing ring 4. The left side of the active ring 5 is fixedly connected to the push rod 7. The left side of the push rod 7 is movably connected to the angle bracket 61. The inner side of the rotating sleeve 66 is rotatably connected to the limit ring 8.

[0042] The extrusion device 1 is provided to melt the raw material and extrude it through the die head. After extrusion, it will directly fall into the interior of the cooling box 2, and after passing through the active ring 5 and the sizing ring 4 for preliminary cooling and forming, it will be further shaped and cooled through the post-cooling part 3, and finally output from the right side of the cooling box 2 to the subsequent traction and cutting equipment.

[0043] Among them, the rear cooling part 3 includes a cooling pipe 301 and a rear cooling nozzle 302, and the bottom of the inner side of the cooling box 2 is fixedly connected to an empty frame 303. The left side of the empty frame 303 is rotatably connected to a number of water baffles 304 through a damping shaft. The inner side of the water baffle 304 is provided with a leakage hole. The side of the cooling pipe 301 away from the rear cooling nozzle 302 is externally connected to a cooling water pump. The cooling pipe 301 is provided to adjust the position and spray angle of the rear cooling nozzle 302 and supply water for spraying. The empty frame 303 is used to install the water baffle 304. When the water flow is sprayed onto the surface of the water baffle 304, it will be guided along its inclined surface. Toward, while reducing the impact force, compared with the spraying of the front cold nozzle 65, its cooling efficiency is reduced, but since rapid cooling has been carried out at the front cold nozzle 65, the rear cold nozzle 302 makes the pipe slowly cooled, which can reduce the cooling stress. The bottom of the inner side of the cooling box 2 is fixedly connected with a bracket 26, and the top of the bracket 26 is equipped with an airbag 27. The airbag 27 is installed by setting the bracket 26, and the continuously moving cable protection tube is lifted and supported by the airbag 27, thereby reducing the stress concentration caused by improper support, causing little damage to the pipe surface, and leaving no obvious marks on the pipe surface.

[0044] The working principle of this embodiment is: first, the extrusion device 1 melts the raw material, and the extrusion device 1 extrude the melted raw material through the die head. The formed cable protection tube falls directly into the cooling box 2, and the cable protection tube passes through the active ring 5 and the sizing ring 4 in turn. During this process, the front cold nozzle 65 of the driven component 6 performs preliminary cooling on it, and the water flow sprayed by the rear cold nozzle 302 is sprayed onto the surface of the water baffle 304. The water flow is guided along the inclined surface of the water baffle 304, and the impact force is reduced at the same time, so that the pipe is cooled slowly and the cooling stress is reduced. During the cooling process, the air bag 27 on the bracket 26 supports the continuously moving cable protection tube to reduce stress concentration and avoid damage to the surface of the tube. After sufficient cooling and shaping, the cable protection tube is output from the right side of the cooling box 2 to the subsequent traction and cutting equipment, and the production and processing is completed after the stage.

[0045] Example 2: Reference Figure 1-8 , an extrusion molding device for processing a cable protection tube further includes a driven component 6, wherein the driven component 6 includes an angle bracket 61 and a front cold nozzle 65, the left side of the angle bracket 61 is fixedly connected to a limit plate 62, the left side of the limit plate 62 is fixedly connected to a side plate 63, two inclined plates 64 are provided between the angle bracket 61 and the side plate 63, the two inclined plates 64 are rotatably connected to the angle bracket 61 and the side plate 63 on one side close to the angle bracket 61 and the side plate 63 respectively, the inclined plate 64 is installed on the side close to the front cold nozzle 65 and the front cold nozzle 65, and the inner side of the inclined plate 64 is movably connected to a rotating sleeve 66;

[0046] Before operation, the position of the active ring 5 can be adjusted according to the radius of the cable protection tube. When the active ring 5 is close to the sizing ring 4, the push rod 7 will push the angle bracket 61 of the driven component 6 to rotate and tilt along the sizing ring 4. While tilting, the front cold nozzle 65 at its end will approach or move away from the surface of the cable protection tube. Since a plurality of driven components 6 are arranged in a ring shape surrounding the outside of the cable protection tube, the entire outer circumference of the cable protection tube can be covered, so that it is cooled evenly and it is not easy to have quality problems caused by different cooling rates on a single cross-section. At the same time, the tilting piece 64 can be rotated between the angle bracket 61, the limit piece 62 and the side piece 63 as needed, so that the tilting piece 64 and the front cold nozzle 65 connected thereto are tilted, thereby adjusting the spray angle so that it will not be perpendicular to the cable protection tube. While reducing the impact force, it can also further increase the coverage area during spray cooling, improve the shaping quality and the cooling efficiency of the cable protection tube.

[0047] Among them, two connecting plates 9 are fixedly connected between the opposite sides of the two inclined pieces 64, and a slide groove is provided on the inner side of the inclined piece 64, and a sliding pin 10 is movably connected to the inner side of the slide groove. The sliding pin 10 is fixedly connected to the rotating sleeve 66 on one side close to the rotating sleeve 66. The two connecting plates 9 are used to further connect the two inclined pieces 64, and at the same time, guide and protect the pipeline passing inside. The sliding pin 10 is used to connect the rotating sleeve 66 and the inclined piece 64, so that the rotating sleeve 66 can undergo a certain degree of displacement and rotation relative to the inclined piece 64. The side of the angle bracket 61 close to the sizing ring 4 is fixedly connected to the sizing ring 4 through the rotating shaft. A limiting groove is provided on the right side of the angle bracket 61, and the inner side of the limiting groove is movably connected to the left side of the push rod 7 through the rotating shaft. The diameter ring 4 and the angle bracket 61 can make the angle bracket 61 rotate along the sizing ring 4 to facilitate angle adjustment. The limit groove is connected through the rotating shaft and the push rod 7 to facilitate pushing and pulling the angle bracket 61 to rotate along the sizing ring 4 when the push rod 7 moves horizontally. The front side of the top angle bracket 61 and the rear side of the bottom angle bracket 61 are fixedly connected to the structural frame 11, and the inner side of the structural frame 11 is installed with an electric cylinder 12. The telescopic end of the electric cylinder 12 is fixedly connected to the arc block 13. The front side of the outer side of the top rotating sleeve 66 and the rear side of the outer side of the bottom rotating sleeve 66 are fixedly connected to the force-bearing piece 14. By setting the structural frame 11 to cooperate with the electric cylinder 12, when it is necessary to adjust the spray angle of the tilting piece 64 and the front cold nozzle 65 connected thereto, the force-bearing piece 14 can be pushed by the electric cylinder 12 and the arc block 13, resulting in The top and bottom rotating sleeves 66 generate axial force under the connection of the limiting ring 8, thereby rotating and tilting along the axial direction perpendicular to the cable protection tube, and the tilting frame connected to the rotating sleeve 66 by the sliding pin 10 rotates along the connection between the angle frame 61 and the side piece 63 after being pushed and pulled by the rotating sleeve 66, thereby achieving the effect of tilting the spray angle of the front cold nozzle 65. The two tilting pieces 64 are fixedly connected with torsion springs 15 on one side close to the limiting piece angle frame 61 and the side piece 63, and the two torsion springs 15 are fixedly connected with the angle frame 61 and the side piece 63 on one side. By setting the torsion spring 15, the tilting piece 64 can always maintain its initial position when it is not pushed by the rotating sleeve 66, and when the tilting piece 64 is pushed and tilted, the torsion spring 15 The spring 15 stores force and makes the structure rebound and reset when the force stops, which is convenient for subsequent use. The rotating sleeve 66 and the limiting ring 8 are both hollow. The top and bottom of the rotating sleeve 66 are open. A supply hose 16 is installed on the inner side of the front cold nozzle 65. The side of the supply hose 16 away from the front cold nozzle 65 passes through the two connecting plates 9 and the inner side of the rotating sleeve 66 in turn, and is installed with a distributor 17. The rotating sleeve 66 is matched with the limiting ring 8, and the rotating sleeve 66 and the limiting ring 8 can rotate with each other. In addition to serving as a connector between the inclined plate 64 and the limiting ring 8 and a transmission component for adjusting the inclination, the rotating sleeve 66 has a hollow interior for a hose used to transport cooling water to pass through. The distributor 17 is provided to cooperate with the hose to directly supply cooling water to the front cold nozzle 65.And the cooling water is evenly supplied to the front cold nozzle 65. The right side of the distributor 17 is fixedly connected to the angle bracket 61. The top of the distributor 17 is fixedly connected to an input pipe 18. The input pipe 18 is externally connected to the cooling water pump. The inner side of the cooling box 2 is fixedly connected to a bracket 19. The side of the bracket 19 close to the sizing ring 4 is fixedly connected to the sizing ring 4. The input pipe 18 is used to input cooling water into the inside of the distributor 17. The bracket 19 is used to fix the position of the sizing ring 4 to prevent the structure from moving together when the driven component 6 is pushed and pulled. Three guide rails 20 are fixedly connected to the top of the rear side of the inner wall of the cooling box 2. The inner side of the right guide rail 20 is rotatably connected to a screw rod 21, and the inner sides of the two left guide rails 20 are installed with a polished rod 22. The right side of the right guide rail 20 is externally connected to a control motor. The output end of the control motor is fixedly connected to the screw rod 21. The outer side of the screw rod 21 is threadedly connected to a transmission block 23. The outer side of the polished rod 22 is slidably connected to two driven blocks 24. The front sides of the transmission block 23 and the two driven blocks 24 are respectively fixedly connected to the tops of the three active rings 5. The front side of the transmission block 23 is fixedly connected to a linkage frame 25. The linkage frame 25 is fixedly connected to the front side of the driven blocks 24. By arranging the guide rail 20 in conjunction with the screw rod 21, when the external control motor drives the screw rod 21 to rotate, the transmission block 23 moves along the right guide rail 20, and at the same time, the linkage frame 25 pushes the driven blocks 24 to move synchronously, thereby achieving the effect of synchronously pushing the three active rings 5 ​​to move horizontally.

[0048] Working principle of this embodiment: First, according to the radius of the cable protection tube, the external control motor drives the screw 21 to rotate, so that the transmission block 23 moves along the right guide rail 20, and pushes the driven block 24 to move synchronously through the linkage frame 25, driving the three active rings 5 ​​to move horizontally. When the active ring 5 approaches the sizing ring 4, the push rod 7 pushes the angle frame 61 of the driven assembly 6 to rotate and tilt along the sizing ring 4, driving the front cold nozzle 65 to approach or move away from the surface of the cable protection tube. The cooling water pump inputs cooling water into the distributor 17 through the input pipe 18, and the distributor 17 evenly transports the cooling water to the front cold nozzle 65 through the supply hose 16, thereby ensuring the cable protection tube is in good condition. The protective pipe is spray-cooled, and the cooling pipe 301 of the rear cooling part 3 is externally connected to a cooling water pump, and the pipe is further cooled by the rear cooling nozzle 302. The electric cylinder 12 in the structural frame 11 is started as needed, and the telescopic end of the electric cylinder 12 pushes the arc block 13, and the arc block 13 pushes the force-bearing piece 14, so that the top and bottom rotating sleeves 66 generate axial force under the connection of the limit ring 8, and rotate and tilt in the direction perpendicular to the axis of the cable protection pipe. The rotating sleeve 66 pushes and pulls the inclined piece 64 through the sliding pin 10, thereby adjusting the spray angle of the front cooling nozzle 65. When the inclined piece 64 is not pushed by the rotating sleeve 66, the torsion spring 15 makes the inclined piece 64 rebound and return to its initial position.

[0049] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An extrusion molding device for processing a cable protection tube, comprising an extrusion device (1), characterized in that: A cooling box (2) is installed on the right side of the die head of the extrusion device (1), a post-cooling section (3) is installed on the inner side of the cooling box (2), and three sizing rings (4), three driving rings (5) and a plurality of driven components (6) are provided on the inner side of the cooling box (2); The driven assembly (6) includes an angle bracket (61) and a front cold spray head (65), the left side of the angle bracket (61) is fixedly connected to a limit plate (62), the left side of the limit plate (62) is fixedly connected to a side plate (63), two inclined plates (64) are provided between the angle bracket (61) and the side plate (63), the two inclined plates (64) are rotatably connected to the angle bracket (61) and the side plate (63) on one side close to the angle bracket (61) and the side plate (63), the inclined plate (64) is installed on the side close to the front cold spray head (65), and the inner side of the inclined plate (64) is movably connected to a rotating sleeve (66); The angle bracket (61) is rotatably connected to the sizing ring (4) on one side thereof, the left side of the active ring (5) is fixedly connected to a push rod (7), the left side of the push rod (7) is movably connected to the angle bracket (61), and the inner side of the rotating sleeve (66) is rotatably connected to a limiting ring (8). Two connecting plates (9) are fixedly connected between opposite sides of the two inclined pieces (64). A sliding groove is provided on the inner side of the inclined piece (64). A sliding pin (10) is movably connected to the inner side of the sliding groove. The sliding pin (10) is fixedly connected to the rotating sleeve (66) on the side close to the rotating sleeve (66). The side of the angle frame (61) close to the sizing ring (4) is fixedly connected to the sizing ring (4) through a rotating shaft. A limiting groove is provided on the right side of the angle frame (61). The inner side of the limiting groove is movably connected to the left side of the push rod (7) through a rotating shaft. The front side of the top angle frame (61) and the rear side of the bottom angle frame (61) are both fixedly connected to the structural frame (11). An electric cylinder (12) is installed on the inner side of the structural frame (11), and the telescopic end of the electric cylinder (12) is fixedly connected to an arc block (13). The front side of the outer side of the top rotating sleeve (66) and the rear side of the outer side of the bottom rotating sleeve (66) are fixedly connected to a force-bearing plate (14). The rotating sleeve (66) and the limiting ring (8) are both hollow. The top and bottom of the rotating sleeve (66) are open. A supply hose (16) is installed on the inner side of the front cold nozzle (65). The side of the supply hose (16) away from the front cold nozzle (65) passes through between the two connecting plates (9) and the inner side of the rotating sleeve (66) in sequence, and is installed with a distributor (17).

2. The extrusion molding equipment for processing a cable protection tube according to claim 1, characterized in that: The rear cooling part (3) comprises a cooling pipe (301) and a rear cooling nozzle (302); an empty frame (303) is fixedly connected to the bottom of the inner side of the cooling box (2); a plurality of water baffles (304) are rotatably connected to the left side of the empty frame (303) via a damping shaft; a leakage hole is provided on the inner side of the water baffle (304); and a cooling water pump is externally connected to the side of the cooling pipe (301) away from the rear cooling nozzle (302).

3. The extrusion molding equipment for processing a cable protection tube according to claim 1, characterized in that: The two inclined pieces (64) are fixedly connected to the torsion springs (15) on one side close to the limiting piece angle frame (61) and the side piece (63), and the two torsion springs (15) are fixedly connected to the angle frame (61) and the side piece (63) on one side close to the angle frame (61) and the side piece (63).

4. The extrusion molding equipment for processing a cable protection tube according to claim 1, characterized in that: The right side of the distributor (17) is fixedly connected to the angle bracket (61), the top of the distributor (17) is fixedly connected to an input pipe (18), the input pipe (18) is externally connected to a cooling water pump, the inner side of the cooling box (2) is fixedly connected to a bracket (19), and the side of the bracket (19) close to the sizing ring (4) is fixedly connected to the sizing ring (4).

5. The extrusion molding equipment for processing a cable protection tube according to claim 1, characterized in that: Three guide rails (20) are fixedly connected to the top of the rear side of the inner wall of the cooling box (2), the inner side of the right guide rail (20) is rotatably connected to a screw rod (21), and the inner sides of the two left guide rails (20) are installed with a light rod (22). The right side of the right guide rail (20) is externally connected to a control motor, and the output end of the control motor is fixedly connected to the screw rod (21). The outer side of the screw rod (21) is threadedly connected to a transmission block (23), and the outer side of the light rod (22) is slidably connected to two driven blocks (24). The front sides of the transmission block (23) and the two driven blocks (24) are respectively fixedly connected to the tops of the three active rings (5), and the front side of the transmission block (23) is fixedly connected to a linkage frame (25), and the linkage frame (25) is fixedly connected to the front side of the driven block (24).

6. The extrusion molding equipment for processing a cable protection tube according to claim 1, characterized in that: A bracket (26) is fixedly connected to the bottom of the inner side of the cooling box (2), and an air bag (27) is installed on the top of the bracket (26).

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