Extrusion molding equipment for cable protection pipe processing

Abstract

The invention relates to the technical field of cable protection tube processing, in particular to extrusion molding equipment for cable protection tube processing, which comprises an extrusion device, a cooling box is mounted on the right side of a die head of the extrusion device, and an after-cooling part is mounted on the inner side of the cooling box; three sizing rings, three driving rings and a plurality of driven assemblies are arranged on the inner side of the cooling box. The extrusion molding equipment for cable protection pipe processing has the advantages that the cooling uniformity is improved, meanwhile, the spraying angle of a spraying nozzle relative to a cable protection pipe can be adjusted according to needs, water flow flows along the surface of a pipe body at a certain angle, the cooling coverage range is enlarged, meanwhile, the impact force of spraying water flow is relatively dispersed, and the cooling effect is improved. The cooling device has the advantages that the front section and the rear section are used for cooling separately, so that the surface temperature of the pipe is quickly reduced in the area where the pipe just enters the cooling box, and the spraying strength and the cooling stress are reduced in the later cooling area of the pipe.

Description

Technical Field

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

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

[0003] When forming the cable protection tube, an extrusion forming device 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, which leads to 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 wall, the spraying vertically toward the tube surface may cause the incompletely solidified tube to deform due to its own impact. 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. It also 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, and in the later cooling area of ​​the tube, the spray intensity is reduced, so that the tube is cooled slowly, and the cooling stress is reduced. Extrusion molding equipment for cable protection tube processing Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an extrusion molding equipment for processing cable protection tubes, which has the function of covering the entire circumferential surface of the tube through a surrounding spray structure to improve cooling uniformity, and at the same time can adjust the spray angle of the spray nozzle relative to the cable protection tube as needed, so that water flows at a certain angle along the surface of the tube body, thereby expanding the cooling coverage range and reducing the cooling blind area, while making the impact force of the spray water flow relatively dispersed, with less impact on the surface of the tube, and has the advantages of being divided into front and rear sections for differentiated 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.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: an extrusion molding device for processing a cable protection tube, comprising an extrusion device, a cooling box is installed on the right side of the die head of the extrusion device, a post-cooling part is installed on the inner side of the cooling box, and three sizing rings, three active rings and a plurality of driven components are arranged on the inner side of the cooling box; 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 arranged between the limit plate and the side plate, the sides of the two inclined plates close to the limit plate and the side plate are rotatably connected to the limit plate and the side plate respectively, the side of the inclined plate close to the front cold nozzle is installed with the front cold nozzle, and the inner side of the inclined plate is movably connected to a rotating sleeve; 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 with 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 a limiting ring.

[0006] By adopting the above technical scheme, an extrusion device is set 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 the operation, the position of the active ring can be adjusted according to the radius of the cable protection tube. When the active ring is close to the sizing ring, the push rod will push the angle frame of the driven component to rotate and tilt along the sizing ring. While tilting, 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 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 frame, 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, improve the shaping quality and the cooling efficiency of the cable protection tube.

[0007] The present invention is further configured as follows: the after-cooling part includes a cooling pipe and a after-cooling nozzle, an empty frame is fixedly connected to the bottom of the inner side of the cooling box, a plurality of water baffles are rotatably connected to the left side of the empty frame through a damping shaft, a leakage hole is opened on the inner side of the water baffle, and a cooling water pump is externally connected to the side of the cooling pipe away from the after-cooling nozzle.

[0008] By adopting the above technical solution, a cooling pipe is set to adjust the position and spray angle of the rear cooling nozzle and supply water for spraying. The empty frame is used to install a 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 slowly cooled at the rear cooling nozzle, which can reduce the cooling stress.

[0009] The present invention is further configured as follows: two connecting plates are fixedly connected between opposite sides of the two inclined plates, a slide groove is provided on the inner side of the inclined plates, a slide pin is movably connected to the inner side of the slide groove, and the slide pin is fixedly connected to the rotating sleeve on one side close to the rotating sleeve.

[0010] By adopting the above technical solution, two connecting plates are provided to further connect the two inclined plates, and at the same time guide and protect the pipeline passing inside. The sliding pin is provided 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.

[0011] 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.

[0012] 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 set limit groove is connected by the rotating shaft and the push rod, which can facilitate pushing and pulling the angle bracket to rotate along the sizing ring when the push rod moves horizontally.

[0013] The present invention is further configured as follows: the front side of the top angle frame and the rear side of the bottom angle frame 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.

[0014] By adopting the above technical solution, by setting up a structural frame 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, so that the top and bottom rotating sleeves generate axial force under the connection of the limit ring, thereby rotating and tilting along the axial direction perpendicular to the cable protection tube, and 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.

[0015] The present invention is further configured as follows: one side of the two inclined plates close to the limiting plate and the side plate is respectively fixedly connected with a torsion spring, and one side of the two torsion springs close to the limiting plate and the side plate is respectively fixedly connected with the limiting plate and the side plate.

[0016] 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.

[0017] The present invention is further configured as follows: the rotating sleeve and the limiting ring are both configured to be 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, the side of the supply hose away from the front cold nozzle passes through between the two connecting plates and the inner side of the rotating sleeve in sequence, and a distributor is installed.

[0018] 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 relative to each other. In addition to serving as a connecting piece 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 set distributor 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.

[0019] 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.

[0020] 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 when the driven component is pushed or pulled.

[0021] 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, a lead screw is rotatably connected to the inner side of the right guide rail, a light rod is installed on the inner sides of the two left guide rails, 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 lead screw, the outer side of the lead screw 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.

[0022] 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 driven block is pushed to move synchronously through the linkage frame, so as to achieve the effect of synchronously pushing the three active rings to move horizontally.

[0023] 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.

[0024] 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 little damage to the surface of the tube, and leaving no obvious marks on the surface of the tube.

[0025] Compared with the prior art, the present invention provides an extrusion molding device for processing a cable protection tube, which has the following beneficial effects: The extrusion molding equipment for processing the cable protection tube melts the raw material by setting an extrusion device 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 the operation, the position of the active ring can be adjusted according to the radius of the cable protection tube. When the active ring is close to the sizing ring, the push rod will push the angle frame of the driven component to rotate and tilt along the sizing ring. While tilting, 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 to make it 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 frame, the limit plate and the side plate as needed to tilt the inclined plate and the front cold nozzle connected thereto, 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

[0026] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the cooling box in the present invention; Figure 3 It is a connection schematic diagram of the sizing ring in the present invention; Figure 4 It is a schematic diagram of the right structure of the sizing ring in the present invention; Figure 5 It is a connection diagram of the transfer sleeve in the present invention; Figure 6 A schematic diagram of the movement of the driven component in the present invention; Figure 7 It is a left side view of the sizing ring in the present invention; Figure 8 It is a schematic diagram of the structure of the driven component in the present invention.

[0027] In the figure: 1, extrusion device; 2, cooling box; 3, rear cooling part; 301, cooling pipe; 302, rear cooling nozzle; 303, empty frame; 304, water baffle; 4, sizing ring; 5, active ring; 6, driven assembly; 61, angle frame; 62, limit plate; 63, side plate; 64, tilting plate; 65, front cooling nozzle; 66, rotating sleeve; 7, push rod; 8, limit 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, light rod; 23, transmission block; 24, driven block; 25, linkage frame; 26, bracket; 27, airbag. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0029] Example 1, please refer to Figure 1-2 , an extrusion molding device for processing a cable protection tube, comprising 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, and three sizing rings 4, three active rings 5 ​​and a plurality of driven components 6 are arranged inside the cooling box 2; 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, and the inner side of the rotating sleeve 66 is rotatably connected to the limit ring 8; 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.

[0030] The rear cooling part 3 includes a cooling pipe 301 and a rear cooling nozzle 302. The bottom of the inner side of the cooling box 2 is fixedly connected with an empty frame 303. The left side of the empty frame 303 is rotatably connected with a plurality of water baffles 304 through a damping shaft. A leakage hole is provided on the inner side of the water baffle 304. The cooling pipe 301 is connected to a cooling water pump on the side away from the rear cooling nozzle 302. The cooling pipe 301 is used 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 to the surface of the water baffle 304, it will be guided along its inclined surface. Towards, 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 an airbag 27 is installed on the top of the bracket 26. 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 surface of the pipe, and leaving no obvious marks on the surface of the pipe.

[0031] Working principle of this embodiment: first, the extrusion device 1 melts the raw material, and the extrusion device 1 extrude the molten raw material through the die head. The formed cable protection tube directly falls into the cooling box 2, and the cable protection tube passes through the active ring 5 and the sizing ring 4 in turn. In 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.

[0032] Example 2, reference Figure 1-8 , an extrusion molding device for processing a cable protection tube also includes a driven component 6, wherein the driven component 6 includes an angle frame 61 and a front cold nozzle 65, the left side of the angle frame 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 arranged between the limit plate 62 and the side plate 63, the two inclined plates 64 are rotatably connected to the limit plate 62 and the side plate 63 on one side close to the limit plate 62 and the side plate 63, 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; 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 frame 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 inclined plate 64 can be rotated between the angle frame 61, the limit plate 62 and the side plate 63 as needed, so that the inclined plate 64 and the front cold nozzle 65 connected thereto are tilted, so that the spray angle is adjusted not to be perpendicular to the cable protection tube. While reducing the impact force, the coverage area during spray cooling can be further improved, and the shaping quality and the cooling efficiency of the cable protection tube can be improved.

[0033] Among them, two connecting plates 9 are fixedly connected between the opposite sides of the two inclined pieces 64, 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 the side close to the rotating sleeve 66. The two connecting plates 9 are provided 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 provided to connect the rotating sleeve 66 and the inclined piece 64, so that the rotating sleeve 66 can be displaced and rotated to a certain extent relative to the inclined piece 64. 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, and the inner side of the limiting groove is movably connected to the left side of the push rod 7 through a 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 set limit groove is connected through the rotating shaft and the push rod 7, which can facilitate the pushing and pulling of the angle bracket 61 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 with 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 with 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 with a force-bearing plate 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 inclined plate 64 and the front cold nozzle 65 connected thereto, the force-bearing plate 14 can be pushed by the electric cylinder 12 and the arc block 13, so that 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 respectively fixedly connected with torsion springs 15 on one side close to the limiting piece 62 and the side piece 63, and the two torsion springs 15 are respectively fixedly connected with the limiting piece 62 and the side piece 63 on one side. By setting the torsion spring 15, the tilting piece 64 can always maintain the initial position when it is not pushed by the rotating sleeve 66, and when the tilting piece 64 is pushed to tilt, 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 set to be 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 a distributor 17 is installed. 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 connecting piece between the inclined sheet 64 and the limiting ring 8 and a transmission component for adjusting the inclination, the hollow interior of the rotating sleeve 66 can be used for a hose for transporting cooling water to pass through. The distributor 17 is set 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 cooling 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 with an input pipe 18, and the input pipe 18 is externally connected to a cooling water pump. The inner side of the cooling box 2 is fixedly connected with 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 provided 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 being moved together when the driven component 6 is pushed or 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 with 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, 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. 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. 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. By setting the guide rail 20 to cooperate 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 driven block 24 is pushed to move synchronously through the linkage frame 25, so as to achieve the effect of synchronously pushing the three active rings 5 ​​to move in the horizontal direction.

[0034] 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 the driven block 24 is pushed 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, so as to protect the cable protection tube. 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 a 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, and then adjusts the injection 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 reset to the initial position.

[0035] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make non-creative modifications to the present embodiment as needed. Although the embodiments of the present invention have been shown and described, it is understandable to those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle 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 component (6) comprises an angle frame (61) and a front cold spray head (65); the left side of the angle frame (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 limit plate (62) and the side plate (63); the two inclined plates (64) are rotatably connected to the limit plate (62) and the side plate (63) on one side close to the limit plate (62) and the side plate (63); the inclined plate (64) is installed on one side close to the front cold spray head (65) and the front cold spray head (65); the inner side of the inclined plate (64) is movably connected to a rotating sleeve (66); 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 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 limit ring (8).

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: Two connecting plates (9) are fixedly connected between opposite sides of the two inclined plates (64); a slide groove is provided on the inner side of the inclined plate (64); a slide pin (10) is movably connected to the inner side of the slide groove; and a side of the slide pin (10) close to the rotating sleeve (66) is fixedly connected to the rotating sleeve (66).

4. The extrusion molding equipment for processing a cable protection tube according to claim 1, characterized in that: The side of the angle bracket (61) close to the sizing ring (4) is fixedly connected to the sizing ring (4) via a rotating shaft, and 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) via the rotating shaft.

5. The extrusion molding equipment for processing a cable protection tube according to claim 1, characterized in that: The front side of the top angle frame (61) and the rear side of the bottom angle frame (61) are both fixedly connected to a 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), and 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 both fixedly connected to a force-bearing sheet (14).

6. The extrusion molding equipment for processing a cable protection tube according to claim 1, characterized in that: The two inclined pieces (64) are respectively fixedly connected to torsion springs (15) on one side close to the limiting piece (62) and the side piece (63); and the two torsion springs (15) are respectively fixedly connected to the limiting piece (62) and the side piece (63) on one side close to the limiting piece (62) and the side piece (63).

7. The extrusion molding equipment for processing a cable protection tube according to claim 3, characterized in that: 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 spray head (65), and the side of the supply hose (16) away from the front cold spray head (65) passes through between the two connecting plates (9) and the inner side of the rotating sleeve (66) in sequence, and a distributor (17) is installed.

8. The extrusion molding equipment for processing a cable protection tube according to claim 7, 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).

9. 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 lead screw (21), 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, the output end of the control motor is fixedly connected to the lead screw (21), the outer side of the lead screw (21) is threadedly connected to a transmission block (23), 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), 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).

10. 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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