Device and method for preparing easy-to-penetrate cable protection tube

Abstract

The invention discloses a device and a method for preparing an easy-to-penetrate cable protection pipe, and the device and the method are applied to the technical field of cable protection pipe preparation. A cooling channel formed in the protection pipe body through the internal air cooling assembly firstly makes contact with the interior of the just-extruded high-temperature protection pipe to rapidly absorb internal heat, meanwhile, the external spraying assembly sprays cooling liquid to the outer surface of the protection pipe body to further take away the heat, and the interior and the exterior of the protection pipe body are cooled at the same time; the internal air cooling assembly directly acts on the core part of the protection pipe main body and is combined with the external spraying assembly, so that the temperature gradient is effectively reduced, cooling of all parts of the protection pipe main body is more uniform, and size deviation and performance difference caused by uneven cooling are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of cable protection tube preparation, and in particular relates to a preparation device and a preparation method of an easy-to-insert cable protection tube. Background Art

[0002] Cable protection tube is also known as cable tube, power cable tube, cement cable tube, power drainage tube, power cable protection tube, etc. The outstanding features of cable protection tube are high strength and low friction resistance. It can be used for laying roads of various levels. The low friction resistance between the inner wall and the cable is the most prominent advantage of cable protection tube.

[0003] During the preparation of the existing easy-to-insert cable protection tube, it is extruded into shape by an extruder and cooled by a cooling device. However, the conventional cooling device used for extrusion of the cable protection tube can only cool the outside of the cable protection tube, but lacks cooling inside, resulting in a large temperature gradient during cooling, that is, a large temperature difference between the inside and the outside, which can easily lead to dimensional deviation and performance differences due to uneven cooling.

[0004] Combining the above two issues, we find that it is difficult to avoid the above problems when the existing devices on the market are in use, and thus it is impossible to achieve the desired effect. Therefore, we propose a device and a method for preparing an easy-to-insert cable protection tube, which can simultaneously perform internal and external cooling on the extruded cable protection tube during use, accelerate the cooling rate, and improve the uniformity of packaging cooling. Summary of the invention

[0005] The purpose of the present invention is to provide a preparation device for an existing easy-to-insert cable protection tube. The advantage of the present invention is that a dual cooling structure consisting of an internal air-cooling component and an external spray component is set up. The cooling channel formed by the internal air-cooling component inside the protection tube body first contacts the inside of the high-temperature protection tube that has just been extruded, and quickly absorbs the internal heat. At the same time, the external spray component sprays coolant on the outer surface of the protection tube body to further take away the heat, so that the inside and outside of the protection tube body are cooled simultaneously, so that the temperature of the protection tube body can be rapidly and evenly reduced. The internal air-cooling component directly acts on the core part of the protection tube body, and is combined with the external spray component to effectively reduce the temperature gradient, so that the cooling of various parts of the protection tube body is more uniform, and the dimensional deviation and performance difference caused by uneven cooling are reduced.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a device for preparing an easy-to-insert cable protection tube, comprising an extruder, an extrusion die and a cooling box, the extrusion die comprising a die sleeve and a die core, the die sleeve is bolted to the front side of the inside of the extruder, and the front side of the die sleeve is bolted to the cooling box, the surface of the die core is bolted with a connecting block, and the die core is bolted to the inside of the die sleeve through the connecting block, the top and bottom of the inner wall of the cooling box are bolted to two brackets, and a traction roller is rotatably connected between the opposite sides of the two brackets, a protection tube body is in rolling contact between the top and bottom traction rollers, a double cooling structure is arranged inside the cooling box, and the double cooling structure is used in conjunction with the protection tube body;

[0007] The double cooling structure includes an internal air cooling component and an external spray component. The rear side of the internal air cooling component is bolted to the mold core, and the front side of the internal air cooling component extends to the interior of the protective tube body. The external spray component is sleeved on the surface of the protective tube body and used in conjunction with it.

[0008] By adopting the above technical scheme, a dual cooling structure consisting of an internal air-cooling component and an external spray component is set up. The cooling channel formed by the internal air-cooling component inside the protective tube body first contacts the inside of the high-temperature protective tube that has just been extruded, and quickly absorbs the internal heat. At the same time, the external spray component sprays coolant on the outer surface of the protective tube body to further take away the heat, so that the inside and outside of the protective tube body are cooled simultaneously, so that the temperature of the protective tube body can be rapidly and evenly reduced. The internal air-cooling component directly acts on the core part of the protective tube body, and is combined with the external spray component to effectively reduce the temperature gradient, so that the cooling of various parts of the protective tube body is more uniform, and the dimensional deviation and performance difference caused by uneven cooling are reduced.

[0009] The present invention is further configured as follows: the internal air-cooling component includes an installation box, the installation box is bolted to the front side of the mold core, the front side of the installation box is connected to a hollow tube, and a guide is provided on the surface of the hollow tube, the guide is used in conjunction with the protective tube body, the interior of the installation box is bolted with an air-cooling part, and one end of the air-cooling part passes through the mold core and the bottom connecting block and extends to the outside of the extruder, a plurality of air rings are sleeved on the surface of the hollow tube, and the surface of the air ring is connected to an air outlet pipe in a ring shape, and the air outlet pipe extends to the outside of the guide part away from the air ring.

[0010] By adopting the above technical solution and setting up an internal air-cooling component, a large amount of cold air can be generated by the air-cooling component to enter between the hollow tube and the guide component, and the cold air is distributed to multiple air outlet pipes through the air ring for discharge, so that it can come into contact with the inside of the high-temperature protective tube body that has just been extruded, and quickly absorb the internal heat. The guide component that is set up can flexibly expand or contract so that it can fit against the inner wall of the protective tube body, thereby supporting and guiding the inner wall of the protective tube body.

[0011] The present invention is further configured as follows: the guide member includes a main shaft, which is rotatably connected to the inside of the hollow tube, a plurality of active bevel gears are sleeved on the surface of the main shaft, and four driven bevel gears are connected in an annular manner on the surface of the main shaft bevel gear, a first screw is arranged inside the driven bevel gear, and the other end of the first screw extends to the outside of the hollow tube and is threadedly connected to a threaded sleeve, a pressure plate is bolted to the side of the threaded sleeve away from the first screw, a ball is arranged inside the pressure plate on the side close to the inner wall of the protective tube body, and the ball is used in conjunction with the protective tube body.

[0012] By adopting the above technical solution, by setting a guide member, the main shaft and the active bevel gear can be driven to rotate through an external driving device, and under the meshing connection between the active bevel gear and the driven bevel gear, multiple driven bevel gears can be driven to rotate synchronously, so that the first screw rotates inside the screw sleeve, and the thread cooperation between the screw sleeve and the first screw allows the outer pressure plate to expand and contract freely, thereby supporting and guiding the inner wall of the protective tube body, and the friction between the pressure plate and the inner wall of the protective tube body can be reduced by the ball bearing, so that the protective tube body can move smoothly.

[0013] The present invention is further configured as follows: the interior of the air ring is hollow, and a plurality of air holes are provided in a ring shape on the front and rear sides of the air ring.

[0014] By adopting the above technical solution, the interior of the air ring is hollow, and the front and rear sides of the air ring are both provided with a number of annular air holes, which can facilitate the circulation of cold air and play a role in uniformly cooling the interior of the protective tube body.

[0015] The present invention is further configured as follows: the air-cooling component includes a mounting frame, the mounting frame is bolted to the rear side of the inside of the mounting box, and a coil is bolted to the rear side of the inside of the mounting frame, the two ends of the coil are respectively connected to a water inlet end and a water return end, and the other ends of the water inlet end and the water return end both penetrate the mold core and the bottom connecting block and extend to the outside of the extruder, and an inlet fan is bolted to the front side of the inside of the mounting frame.

[0016] By adopting the above technical solution, through the arrangement of air-cooling parts, it can be connected with external refrigeration equipment through the water inlet end and the water return end. The cold water generated by the external refrigeration equipment will flow in the coil and dissipate the cold energy. At this time, the air inhaled by the inlet fan will be pre-cooled by the cold energy dissipated by the coil to form cold air, which is then discharged through multiple air outlet pipes. It can contact the inside of the high-temperature protection tube body that has just been extruded and quickly absorb the internal heat.

[0017] The present invention is further configured as follows: the external spray assembly includes a mounting plate, the mounting plate is bolted to the right side of the inside of the cooling box, and two movable plates are bolted to the left side of the mounting plate, the two movable plates are bolted to support plates on opposite sides, the two support plates are bolted to spray parts on opposite sides, and the spray parts are respectively located at the top and bottom of the surface of the protective tube body.

[0018] By adopting the above technical solution, an external spray piece is arranged, and the two movable plates can be moved relative or oppositely on the mounting plate, so that the spray piece can be used close to or away from the protection tube body, so that the spray piece can be applicable to the protection tube body within a certain specification range, and has flexibility in use. The spray piece can spray coolant on the outer surface of the protection tube body to further take away the heat, cool the outside of the protection tube body, and quickly reduce the temperature of the protection tube body.

[0019] The present invention is further configured as follows: the spray component includes a fixed arc plate, the side of the fixed arc plate close to the support plate is bolted thereto, both sides of the fixed arc plate are rotatably connected with an adjustable arc plate, the inner walls of the fixed arc plate and the adjustable arc plate are both annularly connected with a plurality of nozzles, the interiors of the fixed arc plate and the adjustable arc plate are provided with flow grooves, and the flow grooves are connected with the nozzles, a connecting pipe is provided inside the support plate, and the connecting pipe is connected with the fixed arc plate close to the side thereof, a curved hose is provided at the connection between the fixed arc plate and the adjustable arc plate, and both ends of the curved hose extend to the interior of the flow groove.

[0020] By adopting the above technical solution, a spray piece is set up, which can be connected to the external coolant pumping equipment through a connecting pipe, so that the coolant first enters the flow groove in the fixed arc plate through the connecting pipe, and part of the coolant enters the flow groove in the adjusting arc plate through the bent hose. Finally, the coolant is evenly sprayed on the surface of the protective tube body through a plurality of nozzles, thereby taking away the heat on the surface of the protective tube body, so that the external temperature of the protective tube body can be rapidly and evenly reduced.

[0021] The present invention is further configured as follows: a connecting plate is bolted to the right side of the movable plate, and a bidirectional screw rod is rotatably connected inside the mounting plate, and the top of the bidirectional screw rod extends to the top of the cooling box body, and the connecting plate is connected to the surface of the bidirectional screw rod.

[0022] By adopting the above technical solution, a connecting plate bidirectional screw is set, and the threaded cooperation between the connecting plate and the bidirectional screw can facilitate the adjustment of the distance between the two movable plates, so that the spray piece can be used close to or away from the protective tube body, so that the spray piece can be applicable to the protective tube body within a certain specification range, and has flexibility in use.

[0023] The present invention is further configured as follows: screw barrels are provided on both sides between the support plate and the spray piece, and the internal threads of the screw barrels are connected to two second screw rods with opposite threads, and the second screw rods are bolted to a rotating frame on one side close to the support plate and the spray piece, and the rotating frame is bolted to the support plate and the spray piece on one side respectively.

[0024] By adopting the above technical solution, a second screw, a screw barrel and a rotating frame are set. Since a thread corresponding to the second screw is set inside the screw barrel, the two second screws can enter or move out of the interior of the screw barrel by rotating the screw barrel. The telescopic length of the two second screws can be adjusted, which makes it easy to adjust the use angle of the two adjustment arc plates, thereby achieving the effect of protecting the pipe body within a certain specification range.

[0025] A method for preparing an easy-to-insert cable protection tube comprises the following steps:

[0026] S1. Ingredients: selecting and weighing the raw materials for preparing the easy-to-insert cable protection tube;

[0027] S2. Mixing: placing the selected and weighed raw materials in a mixing device and mixing them evenly;

[0028] S3. Extrusion, using an extruder and an extrusion die to extrude and form an easy-to-insert cable protection tube;

[0029] S4. Cooling: the extruded easy-to-insert cable protection tube enters the cooling box, and the internal air cooling component and the external spray component simultaneously perform internal and external dual cooling on the easy-to-insert cable protection tube, thereby accelerating the cooling process of the easy-to-insert cable protection tube;

[0030] S5. Quality inspection and packaging: perform quality inspection on the cooled easy-to-insert cable protection tube and package it for storage.

[0031] In summary, the present invention has the following beneficial effects:

[0032] By setting up a double cooling structure consisting of an internal air-cooling component and an external spray component, the cooling channel formed by the internal air-cooling component inside the protective tube body first contacts the inside of the newly extruded high-temperature protective tube to quickly absorb the internal heat. At the same time, the external spray component sprays coolant on the outer surface of the protective tube body to further take away the heat, so that the inside and outside of the protective tube body are cooled simultaneously, so that the temperature of the protective tube body can be rapidly and evenly reduced. The internal air-cooling component directly acts on the core part of the protective tube body, and combined with the external spray component, the temperature gradient is effectively reduced, so that the cooling of various parts of the protective tube body is more uniform, and the dimensional deviation and performance difference caused by uneven cooling are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0035] Figure 3 is a schematic cross-sectional view of an internal air cooling assembly of the present invention;

[0036] Figure 4 It is a schematic diagram of the connection between the guide member and the hollow tube of the present invention;

[0037] Figure 5 It is a schematic diagram of the structure of the air-cooling part of the present invention;

[0038] Figure 6 is a schematic diagram of the structure of the external spray assembly of the present invention;

[0039] Figure 7 is a schematic cross-sectional view of a spraying member of the present invention;

[0040] Figure 8 The present invention is a schematic diagram of the process of preparing the easy-to-insert cable protection tube.

[0041] Figure numerals: 1, extruder; 2, extrusion die; 21, die sleeve; 22, die core; 23, connection block; 3, cooling box; 4, bracket; 5, traction roller; 6, protection tube body; 7, double cooling structure; 8, internal air cooling component; 81, installation box; 82, hollow tube; 83, guide; 831, main shaft; 832, driving bevel gear; 833, driven bevel gear; 834, first screw; 835, screw sleeve; 836, pressure plate; 837, ball; 84, air cooling component; 841, installation frame ;842, coil;843, water inlet end;844, water return end;845, fan inlet;85, air ring;86, air outlet duct;9, external spray assembly;91, mounting plate;92, movable plate;93, support plate;94, spray part;941, fixed arc plate;942, adjustable arc plate;943, nozzle;944, flow slot;945, connecting pipe;946, bent hose;10, air hole;11, connecting plate;12, bidirectional screw;13, screw barrel;14, second screw;15, rotating frame. DETAILED DESCRIPTION

[0042] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0043] refer to Figure 1-7, a preparation device for an easy-to-insert cable protection tube, comprising an extruder 1, an extrusion die 2 and a cooling box 3, the extrusion die 2 comprising a die sleeve 21 and a die core 22, the die sleeve 21 is bolted to the front side of the inside of the extruder 1, and the front side of the die sleeve 21 is bolted to the cooling box 3, the surface of the die core 22 is bolted with a connecting block 23, and the die core 22 is bolted to the inside of the die sleeve 21 through the connecting block 23, the top and bottom of the inner wall of the cooling box 3 are bolted with two brackets 4, and a traction roller 5 is rotatably connected between the opposite sides of the two brackets 4, a protection tube body 6 is in rolling contact between the top and bottom traction rollers 5, a double cooling structure 7 is arranged inside the cooling box 3, and the double cooling structure 7 is used in conjunction with the protection tube body 6;

[0044] The double cooling structure 7 includes an internal air cooling component 8 and an external spray component 9. The rear side of the internal air cooling component 8 is bolted to the mold core 22, and the front side of the internal air cooling component 8 extends to the interior of the protection tube body 6. The external spray component 9 is sleeved on the surface of the protection tube body 6 and used in conjunction with it. By setting the double cooling structure 7 composed of the internal air cooling component 8 and the external spray component 9, the cooling channel formed by the internal air cooling component 8 inside the protection tube body 6 first contacts the interior of the high-temperature protection tube just extruded, and quickly absorbs the internal heat. At the same time, the external spray component 9 sprays coolant on the outer surface of the protection tube body 6 to further take away the heat, so that the inside and outside of the protection tube body 6 are cooled simultaneously, so that the temperature of the protection tube body 6 can drop rapidly and evenly. The internal air cooling component 8 directly acts on the core part of the protection tube body 6, and combined with the external spray component 9, the temperature gradient is effectively reduced, so that the cooling of various parts of the protection tube body 6 is more uniform, and the dimensional deviation and performance difference caused by uneven cooling are reduced.

[0045] like Figure 3 As shown, the internal air-cooling assembly 8 includes a mounting box 81, which is bolted to the front side of the mold core 22, and the front side of the mounting box 81 is connected to a hollow tube 82, and a guide 83 is provided on the surface of the hollow tube 82, and the guide 83 is used in conjunction with the protective tube body 6, and an air-cooling member 84 is bolted to the inside of the mounting box 81, and one end of the air-cooling member 84 passes through the mold core 22 and the bottom connecting block 23 and extends to the outside of the extruder 1, and a plurality of air rings 85 are sleeved on the surface of the hollow tube 82, and the surface of the air ring 85 is annularly connected to an air outlet pipe 86, and the air outlet pipe 86 is far away One side of the air ring 85 extends to the outside of the guide member 83. By setting up an internal air cooling component 8, a large amount of cold air can be generated through the air cooling member 84 to enter between the hollow tube 82 and the guide member 83, and the cold air is distributed to multiple air outlet pipes 86 through the air ring 85 for discharge, and can come into contact with the inside of the just-extruded high-temperature protection tube body 6 to quickly absorb the internal heat. The guide member 83 can be flexibly expanded or contracted so that it can fit on the inner wall of the protection tube body 6, thereby supporting and guiding the inner wall of the protection tube body 6.

[0046] like Figure 4 As shown, the guide member 83 includes a main shaft 831, which is rotatably connected to the inside of the hollow tube 82. A plurality of active bevel gears 832 are sleeved on the surface of the main shaft 831, and four driven bevel gears 833 are connected to the surface of the bevel gear of the main shaft 831 in an annular meshing manner. A first screw rod 834 is arranged inside the driven bevel gear 833, and the other end of the first screw rod 834 extends to the outside of the hollow tube 82 and is threadedly connected to a screw sleeve 835. A pressure plate 836 is bolted to the side of the screw sleeve 835 away from the first screw rod 834, and a ball 837 is arranged inside the pressure plate 836 close to the inner wall of the protection tube body 6, and the ball 837 cooperates with the protection tube body 6 to By setting a guide member 83, the main shaft 831 and the active bevel gear 832 can be driven to rotate through an external driving device, and under the meshing connection between the active bevel gear 832 and the driven bevel gear 833, multiple driven bevel gears 833 can be driven to rotate synchronously, so that the first screw 834 rotates inside the screw sleeve 835, and the threaded cooperation between the screw sleeve 835 and the first screw 834 allows the outer pressure plate 836 to expand and contract freely, thereby supporting and guiding the inner wall of the protection tube body 6, and the ball 837 can reduce the friction between the pressure plate 836 and the inner wall of the protection tube body 6, so that the protection tube body 6 can move smoothly.

[0047] like Figure 4 As shown, the interior of the air ring 85 is hollow, and the front and rear sides of the air ring 85 are provided with a plurality of air holes 10 in a ring shape. By making the interior of the air ring 85 hollow, and the front and rear sides of the air ring 85 are provided with a plurality of air holes 10 in a ring shape, the cold air can be easily circulated, thereby achieving a uniform cooling effect on the interior of the protective tube body 6.

[0048] like Figure 5 As shown, the air-cooling component 84 includes a mounting frame 841, which is bolted to the rear side of the mounting box 81, and a coil 842 is bolted to the rear side of the mounting frame 841, and the two ends of the coil 842 are respectively connected with a water inlet end 843 and a water return end 844, and the other ends of the water inlet end 843 and the water return end 844 both penetrate the mold core 22 and the bottom connecting block 23 and extend to the outside of the extruder 1, and an inlet fan 845 is bolted to the front side of the mounting frame 841. By setting the air-cooling component 84, the water inlet end 843 and the water return end 844 can be connected to the external refrigeration equipment, and the cold water generated by the external refrigeration equipment will flow in the coil 842 and dissipate the cold. At this time, the air inhaled by the inlet fan 845 will be pre-cooled by the cold dissipated by the coil 842 to form cold wind, which is then discharged through a plurality of air outlet pipes 86, and can contact the inside of the high-temperature protection tube body 6 just extruded to quickly absorb the internal heat.

[0049] like Figure 6 As shown, the external spray assembly 9 includes a mounting plate 91, which is bolted to the right side inside the cooling box 3, and two movable plates 92 are bolted to the left side of the mounting plate 91, and the two movable plates 92 are bolted to the opposite sides thereof with support plates 93, and the two support plates 93 are bolted to the opposite sides thereof with spray components 94, and the spray components 94 are respectively located at the top and bottom of the surface of the protection tube body 6, and by arranging the external spray component 94, the two movable plates 92 can be moved relative to or oppositely on the mounting plate 91, so that the spray component 94 can be used close to or away from the protection tube body 6, so that the spray component 94 can be applicable to the protection tube body 6 within a certain specification range, and has flexibility in use, and the cooling liquid can be sprayed onto the outer surface of the protection tube body 6 through the spray component 94, so as to further take away the heat, cool the outside of the protection tube body 6, and rapidly reduce the temperature of the protection tube body 6.

[0050] like Figure 7 As shown, the spraying member 94 includes a fixed arc plate 941, and the fixed arc plate 941 is bolted to the support plate 93 on one side thereof, and the fixed arc plate 941 is rotatably connected to the two sides thereof with an adjustable arc plate 942, and the inner walls of the fixed arc plate 941 and the adjustable arc plate 942 are both annularly connected to a plurality of spray heads 943, and the fixed arc plate 941 and the adjustable arc plate 942 are both provided with a flow groove 944 inside, and the flow groove 944 is connected to the spray head 943, and a connecting pipe 945 is provided inside the support plate 93, and the connecting pipe 945 is connected to the fixed arc plate 941 on one side thereof, and the fixed arc plate 941 and the adjustable arc plate 942 are connected to the fixed arc plate 941 ... A curved hose 946 is provided at the connection point, and both ends of the curved hose 946 extend to the inside of the circulation groove 944. By providing a spray part 94, it can be connected with an external coolant pumping device through a connecting pipe 945, so that the coolant first enters the circulation groove 944 in the fixed arc plate 941 through the connecting pipe 945, and part of the coolant enters the circulation groove 944 in the regulating arc plate 942 through the curved hose 946, and finally the coolant is evenly sprayed on the surface of the protection tube body 6 through a plurality of nozzles 943, thereby taking away the heat from the surface of the protection tube body 6, so that the external temperature of the protection tube body 6 can be rapidly and evenly reduced.

[0051] like Figure 6 As shown, a connecting plate 11 is bolted to the right side of the movable plate 92, and a bidirectional screw rod 12 is rotatably connected to the inside of the mounting plate 91, and the top of the bidirectional screw rod 12 extends to the top of the cooling box 3, and the connecting plate 11 is connected to the surface of the bidirectional screw rod 12. By setting the connecting plate 11 and the bidirectional screw rod 12, the distance between the two movable plates 92 can be easily adjusted through the threaded cooperation of the connecting plate 11 and the bidirectional screw rod 12, so that the spray component 94 can be used close to or away from the protective tube body 6, so that the spray component 94 can be applicable to the protective tube body 6 within a certain specification range, and has flexibility in use.

[0052] like Figure 6 As shown, a screw barrel 13 is provided on both sides between the support plate 93 and the spray part 94, and the internal thread of the screw barrel 13 is connected to two second screw rods 14 with opposite threads. The second screw rod 14 is bolted with a rotating frame 15 on the side close to the support plate 93 and the spray part 94, and the rotating frame 15 is bolted to the two on the side close to the support plate 93 and the spray part 94 respectively. By arranging the second screw rod 14, the screw barrel 13 and the rotating frame 15, since the screw barrel 13 is internally provided with a thread corresponding to the second screw rod 14, the two second screw rods 14 can enter or move out of the interior of the screw barrel 13 by rotating the screw barrel 13, and the telescopic length of the two second screw rods 14 can be adjusted, so that it is convenient to adjust the use angle of the two adjustment arc plates 942, thereby achieving the effect of protecting the pipe body 6 within a certain specification range.

[0053] Brief description of the use process: the protective tube body 6 extruded by the extrusion die 2 will move inside the cooling box 3 through the traction roller 5, and first drive the main shaft 831 and the active bevel gear 832 to rotate through the external driving device, and under the meshing connection between the active bevel gear 832 and the driven bevel gear 833, it can synchronously drive multiple driven bevel gears 833 to rotate synchronously, so that the first screw 834 rotates inside the screw sleeve 835, and the outer pressure plate 836 can expand and contract freely under the thread cooperation between the screw sleeve 835 and the first screw 834, so as to support and guide the inner wall of the protective tube body 6, and is connected with the external refrigeration equipment through the water inlet end 843 and the water return end 844. The cold water generated by the external refrigeration equipment will flow in the coil 842 and dissipate the cold. At this time, the air inhaled by the inlet fan 845 will be pre-cooled by the cold dissipated by the coil 842. Cold wind is formed, so that the incoming air enters between the hollow tube 82 and the guide member 83, and is distributed to multiple air outlet pipes 86 for discharge through the air ring 85, so that the cold wind can contact the inside of the high-temperature protection tube body 6 that has just been extruded, and quickly absorb the internal heat. While the inside of the protection tube body 6 is cooled, it is connected to the external coolant pumping equipment through the connecting pipe 945, so that the coolant first enters the flow groove 944 in the fixed arc plate 941 through the connecting pipe 945, and part of the coolant enters the flow groove 944 in the regulating arc plate 942 through the bent hose 946, and finally the coolant is evenly sprayed on the surface of the protection tube body 6 through a plurality of nozzles 943, so as to take away the heat on the surface of the protection tube body 6. The internal and external synergistic effect of the internal air cooling component 8 and the external spray component 9 can more quickly reduce the temperature of the protection tube body 6, shorten the cooling time, and thus improve production efficiency.

[0054] like Figure 8 As shown, the present invention also provides a method for preparing an easy-to-insert cable protection tube, comprising the following steps:

[0055] S1. Ingredients: selecting and weighing the raw materials for preparing the easy-to-insert cable protection tube;

[0056] S2. Mixing: placing the selected and weighed raw materials in a mixing device and mixing them evenly;

[0057] S3 extrusion, using an extruder 1 and an extrusion die 2, so that the easy insertion cable protection tube extrusion molding;

[0058] S4. Cooling, the extruded easy-to-insert cable protection tube enters the cooling box 3, and the internal air cooling component 8 and the external spray component 9 simultaneously perform dual cooling of the easy-to-insert cable protection tube inside and outside, thereby accelerating the cooling process of the easy-to-insert cable protection tube;

[0059] S5. Quality inspection and packaging: perform quality inspection on the cooled easy-to-insert cable protection tube and package it for storage.

[0060] 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 the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A device for preparing an easy-to-insert cable protection tube, comprising an extruder (1), an extrusion die (2) and a cooling box (3), characterized in that: The extrusion die (2) comprises a die sleeve (21) and a die core (22); the die sleeve (21) is bolted to the front side of the inside of the extruder (1), and the front side of the die sleeve (21) is bolted to the cooling box (3); a connection block (23) is bolted to the surface of the die core (22), and the die core (22) is bolted to the inside of the die sleeve (21) through the connection block (23); two brackets (4) are bolted to the top and bottom of the inner wall of the cooling box (3), and a traction roller (5) is rotatably connected between the opposite sides of the two brackets (4); a protective tube body (6) is in rolling contact between the top and bottom traction rollers (5); a double cooling structure (7) is provided inside the cooling box (3), and the double cooling structure (7) is used in conjunction with the protective tube body (6); The double cooling structure (7) comprises an internal air cooling component (8) and an external spray component (9), the rear side of the internal air cooling component (8) is bolted to the mold core (22), and the front side of the internal air cooling component (8) extends to the interior of the protection tube body (6), and the external spray component (9) is sleeved on the surface of the protection tube body (6) and used in conjunction with it.

2. The device for preparing an easy-to-insert cable protection tube according to claim 1, characterized in that: The internal air cooling component (8) comprises an installation box (81), the installation box (81) is bolted to the front side of the mold core (22), the front side of the installation box (81) is connected to a hollow tube (82), and a guide member (83) is arranged on the surface of the hollow tube (82), the guide member (83) is used in conjunction with the protective tube body (6), the interior of the installation box (81) is bolted to an air cooling member (84), and one end of the air cooling member (84) passes through the mold core (22) and the bottom connecting block (23) and extends to the outside of the extruder (1), the surface of the hollow tube (82) is sleeved with a plurality of air rings (85), and the surface of the air ring (85) is connected to an air outlet pipe (86) in a ring shape, and the air outlet pipe (86) extends to the outside of the guide member (83) away from the side of the air ring (85).

3. The device for preparing an easy-to-insert cable protection tube according to claim 2, characterized in that: The guide member (83) comprises a main shaft (831), the main shaft (831) is rotatably connected to the inside of the hollow tube (82), a plurality of active bevel gears (832) are sleeved on the surface of the main shaft (831), and four driven bevel gears (833) are connected in annular meshing manner on the surface of the bevel gears of the main shaft (831), a first screw rod (834) is arranged inside the driven bevel gears (833), and the other end of the first screw rod (834) extends to the outside of the hollow tube (82) and is threadedly connected to a screw sleeve (835), a side of the screw sleeve (835) away from the first screw rod (834) is bolted to a pressure plate (836), and a ball (837) is arranged inside the pressure plate (836) on a side close to the inner wall of the protection tube body (6), and the ball (837) is used in conjunction with the protection tube body (6).

4. The device for preparing an easy-to-insert cable protection tube according to claim 2, characterized in that: The interior of the air ring (85) is hollow, and a plurality of air holes (10) are provided in an annular shape on the front and rear sides of the air ring (85).

5. The device for preparing an easy-to-insert cable protection tube according to claim 2, characterized in that: The air-cooling component (84) includes a mounting frame (841), the mounting frame (841) is bolted to the rear side of the mounting box (81), and a coil (842) is bolted to the rear side of the mounting frame (841), the two ends of the coil (842) are respectively connected to a water inlet end (843) and a water return end (844), and the other ends of the water inlet end (843) and the water return end (844) both pass through the mold core (22) and the bottom connecting block (23) and extend to the outside of the extruder (1), and an air inlet fan (845) is bolted to the front side of the mounting frame (841).

6. The device for preparing an easy-to-insert cable protection tube according to claim 1, characterized in that: The external spray assembly (9) comprises a mounting plate (91), wherein the mounting plate (91) is bolted to the right side inside the cooling box (3), and two movable plates (92) are bolted to the left side of the mounting plate (91), and the two movable plates (92) are bolted to support plates (93) on opposite sides, and the two support plates (93) are bolted to spray components (94) on opposite sides, and the spray components (94) are respectively located at the top and bottom of the surface of the protective tube body (6).

7. The device for preparing an easy-to-insert cable protection tube according to claim 6, characterized in that: The spraying member (94) comprises a fixed arc plate (941), one side of the fixed arc plate (941) close to the support plate (93) is bolted thereto, both sides of the fixed arc plate (941) are rotatably connected with an adjustable arc plate (942), the inner walls of the fixed arc plate (941) and the adjustable arc plate (942) are both annularly connected with a plurality of spray heads (943), and the interiors of the fixed arc plate (941) and the adjustable arc plate (942) are both A circulation groove (944) is provided, and the circulation groove (944) is connected to the nozzle (943); a connecting pipe (945) is provided inside the support plate (93), and the connecting pipe (945) is connected to the fixed arc plate (941) at one side thereof; a curved hose (946) is provided at the connection between the fixed arc plate (941) and the adjustable arc plate (942), and both ends of the curved hose (946) extend to the inside of the circulation groove (944).

8. The device for preparing an easy-to-insert cable protection tube according to claim 6, characterized in that: The right side of the movable plate (92) is bolted with a connecting plate (11), and the inside of the mounting plate (91) is rotatably connected with a bidirectional screw rod (12), and the top of the bidirectional screw rod (12) extends to the top of the cooling box (3), and the connecting plate (11) is connected to the surface of the bidirectional screw rod (12).

9. The device for preparing an easy-to-insert cable protection tube according to claim 6, characterized in that: A screw barrel (13) is provided on both sides between the support plate (93) and the spraying part (94), and the internal thread of the screw barrel (13) is connected to two second screw rods (14) with opposite threads, and the second screw rods (14) are bolted to a rotating frame (15) on one side close to the support plate (93) and the spraying part (94), and the rotating frame (15) is bolted to the support plate (93) and the spraying part (94) on one side respectively.

10. A method for preparing an easy-to-insert cable protection tube as claimed in claims 1 to 9, characterized in that: The following steps are involved: S1. Ingredients: selecting and weighing the raw materials for preparing the easy-to-insert cable protection tube; S2. Mixing: placing the selected and weighed raw materials in a mixing device and mixing them evenly; S3 extrusion, using an extruder (1) and an extrusion die (2) to make the cable protection tube easy to insert extrusion molding; S4. Cooling, the extruded easy-to-insert cable protection tube enters the cooling box (3), and the internal air cooling component (8) and the external spray component (9) simultaneously perform internal and external dual cooling on the easy-to-insert cable protection tube, thereby accelerating the cooling process of the easy-to-insert cable protection tube; S5. Quality inspection and packaging: perform quality inspection on the cooled easy-to-insert cable protection tube and package it for storage.

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