Cable protection tube extrusion molding device and production method thereof

Abstract

The application discloses a cable protection pipe extrusion forming device and a production method thereof, and relates to the technical field of cable protection pipe production. The device comprises a base, an extrusion cylinder and a forming outer die. The top of the base is provided with the extrusion cylinder, and the outer end of the extrusion cylinder is provided with the forming outer die. The top of the fixed outer pipe frame is provided with a movable outer pipe frame, and the inner sides of the fixed outer pipe frame and the movable outer pipe frame are provided with cooling covers. The outer end of the forming outer die is provided with an outer cooling assembly. The circulating pump runs to extract cooling water in the circulating water tank. The cooling water is sprayed out through the cooling covers to continuously water-cool the outer wall of the cable protection pipe. The forced air fan runs to spray forced cooling air through the cooling head to air-cool the inner wall of the cable protection pipe. The inner wall and the outer wall of the extruded cable protection pipe are double-cooled to prevent the bending deformation of the formed cable protection pipe, and the good use performance of the formed cable protection pipe is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable protection pipe production, in particular to an extrusion molding device for cable protection pipe and a production method thereof. BACKGROUND

[0002] The cable protection pipe is a metal protection pipe with certain mechanical strength laid on the outer layer of the cable to prevent damage to the cable. The cable protection pipe can prolong the service life of the cable. It is mainly installed in the section where the communication cable intersects with the power line to prevent the power line from breaking and causing a short circuit accident, which causes the communication cable and steel wire rope to be electrified. The processing of the cable protection pipe is to heat and extrude the raw material master batch by using a screw extruder, and form the cable protection pipe through the extrusion die at the end of the extruder.

[0003] The defects of the existing extrusion molding device are:

[0004] 1. Patent document US20210107178A1 discloses an extrusion molding machine and a manufacturing method of a molded body, which "includes: an extrusion part having a screw and a barrel capable of accommodating the screw; a molding part having one end and the other end, the one end having a mold, and the other end connected to the extrusion port of the extrusion part; and a rectifier arranged between the extrusion part and the molding part. A heat insulation member is further arranged between the molding part and the rectifier." The molding machine cannot cool the inner wall and outer wall of the molded part in time after extrusion, which is easy to cause the bending deformation of the molded part and cannot guarantee the good use performance of the molded part.

[0005] 2. Patent document US20220111558A1 discloses an extrusion molding machine and a method for producing a molded body, which "includes: a molding part having one end and the other end, the one end having a mold, and the other end connected to the extrusion port of the extrusion part, the molding part further including a screen arranged therein. The molding part includes: at least one first temperature control member between the screen and the mold, the first temperature control member including a plurality of first regions divided in a circumferential direction. The temperature of the plurality of first regions can be controlled individually." The extrusion molding machine can only control and adjust the molding extrusion temperature, and cannot accurately adjust the internal humidity according to the internal hot melting state of the molding machine. The unadjustable humidity can adversely affect the hot melting effect of the raw material, and cannot guarantee the extrusion molding quality of the protection pipe.

[0006] 3、The patent document CN215661747U discloses an extrusion shaping device for power cable protection tube production, which comprises a base, a support foot fixedly connected to the lower surface of the base, a feeding mechanism fixedly connected to the left end of the upper surface of the base, an extrusion mechanism fixedly connected to the middle of the upper surface of the base through a support, a shaping mechanism comprising a base plate, a support and a shaping roller, the base plate being fixedly connected to the right end of the upper surface of the base, the upper surface of the base plate being fixedly connected with a support, and the upper end of the support being rotatably connected with the shaping roller, and a drainage mechanism arranged at the upper end of the base. The advantages of the present utility model lie in that the water in the raw material can be discharged during the extrusion shaping of the protective sleeve, improving the extrusion molding quality of the protective sleeve, and the outer surface of the extruded protective sleeve is pressed by the shaping roller to increase the smoothness of the outer surface of the protective sleeve. The extrusion shaping device cannot support the shaped protective tube, which is easy to cause the fracture of the shaped protective tube, and cannot guarantee the production quality of the protective tube.

[0007] 4、The patent document CN215472940U discloses an extrusion molding device for cable protection tube, which comprises a screw extruder, an extrusion molding die is arranged at the output end of the screw extruder, the extrusion molding die comprises a die sleeve and a die core, the die sleeve and the die core are fixedly connected through a plurality of connecting blocks, a cooling water channel is arranged in the die core, the cooling water channel extends to one end of the tapered structure of the die core, a plurality of atomizing heads are arranged on the circumferential surface of the tapered structure of the die core in a ring shape, the atomizing heads are in communication with the cooling water channel, a booster pump is arranged outside the screw extruder, a high-pressure water pipe is connected to the booster pump, and the high-pressure water pipe is in communication with the cooling water channel. The extrusion molding device for cable protection tube can quickly water cool the inner wall of the extrusion molded cable protection tube to ensure the rapid cooling and shaping of the cable protection tube and improve its quality. The extrusion molding device cannot process the attached water on the inner wall of the cable protection tube after water cooling, and the water attached to the inner wall of the cable protection tube is easy to cause damage and is not conducive to the next process of the extrusion molded protective tube. SUMMARY

[0008] The present application aims to provide an extrusion molding device for cable protection tube and a production method thereof to solve the problems in the background art.

[0009] In order to achieve the above object, the present application provides the following technical scheme: a cable protection pipe extrusion forming device, comprising a base, an extrusion cylinder and a forming outer mold, the top of the base is provided with the extrusion cylinder, the outer end of the extrusion cylinder is provided with the forming outer mold, the outer side of the base is provided with a circulating water tank, the outer end of the forming outer mold is provided with an outer cooling assembly, the outer cooling assembly is used for cooling the outer side of the cable protection pipe, the outer cooling assembly comprises a fixed outer pipe frame and a movable outer pipe frame, the bottom of the fixed outer pipe frame is symmetrically provided with a cylinder two, the bottom end of the cylinder two is installed on the top of the circulating water tank, the top of the fixed outer pipe frame is provided with the movable outer pipe frame, and the inner sides of the fixed outer pipe frame and the movable outer pipe frame are provided with cooling covers.

[0010] Preferably, the inner side of the extrusion cylinder is provided with a heating inner cylinder, the inner side of the heating inner cylinder is provided with a feeding screw, the outer side of the extrusion cylinder is provided with a feeding motor, the output end of the feeding motor is connected with the input end of the feeding screw, the top inner side of the heating inner cylinder is provided with a detection groove, the inner wall of the detection groove is provided with a humidity sensor, the inner side of the detection groove is provided with a temperature sensor, the top of the extrusion cylinder is provided with a humidifying device, the output end of the humidifying device is provided with a humidifying head, the top center of the base is provided with a support, the top end of the support is connected with the bottom of the extrusion cylinder, and the front of the extrusion cylinder is provided with an exhaust fan.

[0011] Preferably, the front top end of the extrusion cylinder is provided with a moisture outlet, the inner wall of the moisture outlet is provided with a sealing groove, the inner side of the moisture outlet is provided with a sealing baffle, the outer end of the sealing baffle slides on the inner side of the sealing groove, the top of the extrusion cylinder is provided with a flow frame, the flow frame is located above the moisture outlet, the top of the flow frame is provided with a cylinder one, the output end of the cylinder one is connected with the top center of the sealing baffle, the front of the extrusion cylinder is provided with a drainage frame, the drainage frame is matched with the moisture outlet, and the front of the drainage frame is provided with an exhaust fan.

[0012] Preferably, the inside of the forming outer mold is coaxially provided with a mold core, the inner ring of the mold core is provided with a conduction groove, the bottom wall of the conduction groove is provided with a cooling head, the top of the extrusion cylinder is provided with a forced air fan, and the output end of the forced air fan is connected with the input end of the cooling head.

[0013] Preferably, the top of the extrusion cylinder is provided with a particle feeding bin, the top of the particle feeding bin is provided with a storage tank, the inner wall of the storage tank is provided with a motor plate, the top of the motor plate is provided with a stirring motor, the output end of the stirring motor is provided with a dispersion frame, the inner wall of the particle feeding bin is provided with a bending plate, and the bottom of the bending plate is provided with a discharging valve.

[0014] Preferably, the inner side of the circulating water tank is provided with a fine filter screen, the front side of the circulating water tank is provided with a circulating pump, the output end of the circulating pump is connected with the input end of the cooling cover, the top of the fixed outer pipe frame is provided with a guide groove, the bottom wall of the guide groove is provided with a lifting hand lever, the telescopic end of the lifting hand lever is connected with the bottom of the movable outer pipe frame, the top of the circulating water tank is provided with a wiping chassis, the top of the wiping chassis is provided with a wiping frame, the inner side of the wiping frame is provided with a quick-drying suction pad, and the side of the wiping frame close to the fixed outer pipe frame is provided with a water scraping frame.

[0015] Preferably, the top end inner wall center position of the circulating water tank is provided with a support plate, the top of the support plate is provided with a hydraulic seat, the output end of the hydraulic seat is provided with a smooth support frame, the inner side of the smooth support frame is provided with a power-assisted groove, the inner wall of the power-assisted groove is provided with a horizontal hand lever, the inner side of the power-assisted groove is movably provided with a stabilizing block, the telescopic end of the horizontal hand lever is connected with the outer side of the stabilizing block, the top of the stabilizing block is provided with a regulating groove, the bottom wall of the regulating groove is provided with a micro hand lever, and the telescopic end of the micro hand lever is provided with a power-assisted plate.

[0016] Preferably, the top of the base is provided with a controller, the controller comprises a control module and a receiving module, the control module is used for controlling the working state of the extrusion molding device, the receiving module is used for receiving the output signals of the humidity sensor and the temperature sensor, the output end of the control module is connected with a feeding pretreatment unit, a discharging auxiliary unit, a hot melt humidity adjusting unit and a cooling molding module, the feeding pretreatment unit is used for pretreating and discharging the raw materials, the discharging auxiliary unit is used for assisting the discharge of the cable protection pipe, the hot melt humidity adjusting unit is used for detecting and controlling the temperature and humidity inside the heating inner cylinder, and the cooling molding module is used for cooling and shaping the cable protection pipe, the cooling molding module comprises an outer cooling assembly and an inner cooling unit, the inner cooling unit air cools the inner wall of the cable protection pipe, and the output end of the receiving module is connected with a humidity comparison unit, which is used for comparing the humidity value inside the heating inner cylinder with a preset value.

[0017] Preferably, the production steps of the extrusion molding device are as follows:

[0018] S1, first, add the production plastic raw materials to the storage tank, operate the stirring motor to drive the dispersion rack to rotate to uniformly stir and scatter the raw materials in the storage tank, open the discharge valve to make the raw materials in the storage tank fall into the extrusion cylinder, the heating inner cylinder heats the raw materials, the feeding motor rotates to drive the feeding screw to rotate and continuously convey the hot melt raw materials, the outer forming mold hot melt extrudes the raw materials, and the exhaust fan works to exhaust the gas in the heating inner cylinder to the outside;

[0019] S2, the extruded cable protection tube moves to the circulating water tank direction, when the cable protection tube moves to the top of the smooth support frame, the hydraulic seat works to make the cable protection tube in a horizontal state, the smooth support frame supports the cable protection tube, the outer wall of the cable protection tube contacts the booster plate and continues to move to the outer end, the micro hand lever works to push the booster plate to make the booster plate move inward to hold up the cable protection tube, a plurality of horizontal hand levers work to push the stabilizing blocks to make them move in the booster groove to drive the booster plate to adjust the position in the horizontal direction, the booster plate assists the cable protection tube to move to make the moving efficiency higher, after one boosting operation is completed, the booster plate resets and performs the next assisting operation;

[0020] S3, the cable protection tube passes through the inside of the outer cooling assembly during the discharging process, the lifting hand lever works to push the bottom end of the movable outer pipe frame to adjust the distance between the movable outer pipe frame and the fixed outer pipe frame so that the movable outer pipe frame and the fixed outer pipe frame do not contact the outer wall of the cable protection tube, the circulating pump runs to extract the cooling water in the circulating water tank, the cooling water is sprayed out through the cooling cover to continuously water-cool the outer wall of the cable protection tube, and the cooling water falls into the circulating water tank after being filtered through the fine filter screen.

[0021] Preferably, in the step S1, the following step is further included:

[0022] S11, the temperature sensor and the humidity sensor monitor the temperature and humidity in the heating inner cylinder in real time, when the humidity in the heating inner cylinder is higher than the preset humidity value, the cylinder one works to pull the sealing baffle, the outer end of the sealing baffle slides in the sealing groove and moves upward to remove the shielding of the moisture outlet, the gas in the heating inner cylinder is discharged through the moisture outlet, and the exhaust fan works to speed up the gas discharge efficiency;

[0023] S12, when the humidity in the heating inner cylinder is lower than the preset humidity value, the humidifying device works to increase the humidity in the heating inner cylinder through the humidifying head.

[0024] In the step S3, the following steps are further included:

[0025] S31, while the outer cooling assembly performs the water cooling operation on the outer wall of the cable protection tube, the forced air fan runs to spray the forced cooling air through the cooling head to perform the air cooling treatment on the inner wall of the cable protection tube;

[0026] S32, when the cable protection tube after cooling passes through the wiping chassis and the inside of the wiping frame, the water scraping frame scrapes off the water attached to the outer wall of the cable protection tube, and the quick-drying suction pad contacts the outer wall of the cable protection tube to wipe the residual water.

[0027] Compared with the prior art, the beneficial effects of the present application are as follows:

[0028] 1. The present application sets up an outer cooling assembly at the outer end of the outer mold, the cable protection tube passes through the inside of the outer cooling assembly during discharging, the lifting hand lever pushes the bottom end of the movable outer pipe support, adjusts the distance between the movable outer pipe support and the fixed outer pipe support, so that the movable outer pipe support and the fixed outer pipe support do not contact the outer wall of the cable protection tube, the circulating pump extracts the cooling water in the circulating water tank, the cooling water is sprayed out through the cooling cover to continuously water cool the outer wall of the cable protection tube, the outer cooling assembly water cools the outer wall of the cable protection tube while the forced air fan operates, the forced cooling air is sprayed out through the cooling head to air cool the inner wall of the cable protection tube, and the inner wall and the outer wall of the extruded cable protection tube are double cooled to prevent the bending deformation of the formed cable protection tube, and the good use performance of the formed cable protection tube is ensured.

[0029] 2. The present application sets up a moisture outlet on the front top end of the extrusion cylinder, when the humidity inside the heating inner cylinder is higher than the preset humidity value, the cylinder works to pull the sealing baffle, the outer end of the sealing baffle slides in the sealing groove and moves upward to remove the shielding of the moisture outlet, the gas in the heating inner cylinder is discharged through the moisture outlet, and the exhaust fan works to speed up the gas discharge efficiency, when the humidity inside the heating inner cylinder is lower than the preset humidity value, the humidifying device works to increase the humidity inside the heating inner cylinder through the humidifying head, the internal humidity is accurately adjusted according to the hot melting state of the molding device, the adverse effects of excessive or insufficient humidity on the hot melting effect of the raw materials are avoided, and the extrusion molding quality of the cable protection tube is improved.

[0030] 3. The present application sets up a smooth support frame on the output end of the hydraulic seat, the extruded cable protection tube moves to the circulating water tank, the hydraulic seat works to make the cable protection tube in a horizontal state when the cable protection tube moves above the smooth support frame, the smooth support frame supports the cable protection tube, the outer wall of the cable protection tube contacts the booster plate and continues to move to the outer end, the micro hand lever works to push the booster plate to make the booster plate move inward to hold up the cable protection tube, a plurality of horizontal hand levers work to push the stabilizing blocks to move in the booster groove to drive the booster plate to adjust the position in the horizontal direction, the booster plate assists the pushing of the cable protection tube to make the moving efficiency higher, the support of the formed protection tube prevents the fracture of the formed cable protection tube during discharging, ensures the discharging rate, and further improves the production quality of the cable protection tube.

[0031] 4、The present application is through the installation of the wiping chassis on the top of the circulating water tank, the water adhered to the outer wall of the cable protection pipe is scraped by the scraping frame when the cable protection pipe after cooling is wiped through the wiping chassis and the inner side of the wiping frame, the residual water on the outer wall of the cable protection pipe is wiped by the quick-drying suction pad in contact with the outer wall, the water adhered to the outer wall of the cable protection pipe after water cooling is wiped and treated, the damage caused by the water adhered to the inner wall of the cable protection pipe is effectively prevented, the subsequent process treatment of the cable protection pipe after extrusion molding is facilitated, the labor intensity of workers is reduced, and the energy waste caused by drying is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a three-dimensional structure schematic diagram of the present application;

[0033] Figure 2 It is a three-dimensional structure schematic diagram of the present application;

[0034] Figure 3 It is a three-dimensional structure schematic diagram of the present application;

[0035] Figure 4 It is a three-dimensional structure schematic diagram of the present application;

[0036] Figure 5 It is a three-dimensional structure schematic diagram of the present application;

[0037] Figure 6 It is a three-dimensional structure schematic diagram of the present application;

[0038] Figure 7 It is a three-dimensional structure schematic diagram of the present application;

[0039] Figure 8 It is a three-dimensional structure schematic diagram of the present application;

[0040] Figure 9 It is a three-dimensional structure schematic diagram of the present application;

[0041] Figure 10 It is a three-dimensional structure schematic diagram of the present application;

[0042] In the figure: 1, base; 2, extrusion cylinder; 3, moisture outlet; 4, forming outer mold; 5, particle feeding bin; 6, circulating water tank; 7, fixed outer tube frame; 8, hydraulic seat; 9, wiping chassis; 10, controller; 11, heating inner cylinder; 12, conveying screw; 13, conveying motor; 14, detection groove; 15, humidity sensor; 16, temperature sensor; 17, humidifying device; 18, humidifying head; 19, support; 20, exhaust fan; 21, forced air fan; 22, sealing groove; 23, sealing baffle; 24, flow-through frame; 25, air cylinder one; 26, water scraping frame; 27, drainage frame; 28, exhaust fan; 29, mold core; 30, conduction groove; 31, cooling head; 32, storage tank; 33, motor plate; 34, stirring motor; 35, dispersion material frame; 36, bending plate; 37, discharging valve; 38, fine filter screen; 39, support plate; 40, circulating pump; 41, air cylinder two; 42, guide groove; 43, lifting hand lever; 44, movable outer tube frame; 45, cooling cover; 46, smooth support frame; 47, power-assisted groove; 48, horizontal hand lever; 49, stabilizing block; 50, control groove; 51, micro hand lever; 52, power-assisted plate; 53, wiping frame; 54, quick-drying suction pad. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0044] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection or movable connection, can be detachable connection, or integral connection; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] Referring to Figure 1 , Figure 3 , Figure 5 and Figure 8 , the present application provides an embodiment: a cable protection pipe extrusion molding device and its production method;

[0047] The outer end of the extrusion barrel 2 is provided with a forming outer mold 4, and the outer end of the forming outer mold 4 is provided with an outer cooling assembly. The outer cooling assembly is used for cooling the outer side of the cable protection pipe. The outer cooling assembly comprises a fixed outer pipe frame 7 and a movable outer pipe frame 44. The bottom of the fixed outer pipe frame 7 is symmetrically provided with a second air cylinder 41, and the bottom end of the second air cylinder 41 is installed on the top of the circulating water tank 6. The top of the fixed outer pipe frame 7 is provided with the movable outer pipe frame 44. The inner sides of the fixed outer pipe frame 7 and the movable outer pipe frame 44 are provided with a cooling cover 45. The inner side of the circulating water tank 6 is provided with a fine filter screen 38. The front of the circulating water tank 6 is provided with a circulating pump 40, and the output end of the circulating pump 40 is connected with the input end of the cooling cover 45. The top of the fixed outer pipe frame 7 is provided with a guide groove 42. The bottom wall of the guide groove 42 is provided with a lifting hand rod 43, and the telescopic end of the lifting hand rod 43 is connected with the bottom of the movable outer pipe frame 44. The top of the circulating water tank 6 is provided with a wiping chassis 9. The top of the wiping chassis 9 is provided with a wiping frame 53. The inner side of the wiping frame 53 is provided with a quick-drying suction pad 54. The side of the wiping frame 53 close to the fixed outer pipe frame 7 is provided with a water scraping frame 26.

[0048] The cable protection pipe passes through the inner side of the outer cooling assembly during discharging. The second air cylinder 41 works to adjust the use height of the outer cooling assembly. The guide groove 42 provides an installation position for the lifting hand rod 43. The lifting hand rod 43 works to push the bottom end of the movable outer pipe frame 44. The distance between the movable outer pipe frame 44 and the fixed outer pipe frame 7 is adjusted so that the movable outer pipe frame 44 and the fixed outer pipe frame 7 do not contact the outer wall of the cable protection pipe. The circulating pump 40 runs to extract the cooling water in the circulating water tank 6. The cooling water is sprayed out of the cooling cover 45 to continuously water cool the outer wall of the cable protection pipe. The cooling water is filtered by the fine filter screen 38 and falls into the circulating water tank 6.

[0049] The water scraping frame 26 preliminarily scrapes the water attached to the outer wall of the cable protection pipe when the cable protection pipe passes through the inner side of the wiping chassis 9 and the wiping frame 53 after cooling. The scraped water falls into the circulating water tank 6. The quick-drying suction pad 54 contacts the outer wall of the cable protection pipe to wipe and absorb the residual water.

[0050] Referring to Figure 1 , Figure 2 and Figure 4 , a cable protection pipe extrusion molding device and its production method;

[0051] It includes a base 1, an extrusion barrel 2 and a particle loading silo 5, the top of the base 1 is installed with the extrusion barrel 2, the inner side of the extrusion barrel 2 is installed with a heating inner barrel 11, the inner side of the heating inner barrel 11 is installed with a feeding screw 12, the outer side of the extrusion barrel 2 is installed with a feeding motor 13, and the output end of the feeding motor 13 is connected to the input end of the feeding screw 12, and a detection groove 14 is provided on the inner side of the top of the heating inner barrel 11, a bracket 19 is installed at the top center of the base 1, and the top of the bracket 19 is connected to the bottom of the extrusion barrel 2, the top of the extrusion barrel 2 is installed with a particle loading silo 5, the top of the particle loading silo 5 is installed with a storage tank 32, the inner wall of the storage tank 32 is installed with a motor plate 33, the top of the motor plate 33 is installed with a stirring motor 34, the output end of the stirring motor 34 is installed with a dispersion rack 35, the inner wall of the particle loading silo 5 is installed with a bending plate 36, and the bottom of the bending plate 36 is installed with a discharge valve 37;

[0052] The production plastic raw materials are added into the storage tank 32. The motor plate 33 provides an installation position for the stirring motor 34 while ensuring its stability during operation. The stirring motor 34 drives the dispersion rack 35 to rotate to evenly disperse the raw materials in the storage tank 32. The discharge valve 37 is opened to allow the raw materials in the storage tank 32 to fall into the extrusion barrel 2. The discharge amount of the raw materials is accurately controlled by the discharge valve 37. The bending plate 36 is flat in the middle and inclined at both ends to facilitate the discharge of the raw materials. The heating inner barrel 11 heats the raw materials. The feeding motor 13 drives the feeding screw 12 to rotate and promotes the continuous delivery of the hot-melt raw materials. The molding outer mold 4 and the mold core 29 cooperate to perform hot-melt extrusion processing on the raw materials. The exhaust fan 20 works to discharge the gas of the heated inner barrel 11 to the outside, thereby avoiding excessive pressure inside the heated inner barrel 11.

[0053] See also Figure 1 、 Figure 2 and Figure 3 , a cable protection tube extrusion molding device and a production method thereof;

[0054] The detection groove 14, the humidifying device 17 and the moisture outlet 3 are arranged on the top inner side of the heating inner cylinder 11, the humidity sensor 15 is arranged on the inner wall of the detection groove 14, the temperature sensor 16 is arranged on the inner side of the detection groove 14, the humidifying device 17 is arranged on the top of the extrusion cylinder 2, the output end of the humidifying device 17 is provided with the humidifying head 18, the exhaust fan 20 is arranged on the front of the extrusion cylinder 2, the moisture outlet 3 is arranged on the top end of the front of the extrusion cylinder 2, the sealing groove 22 is arranged on the inner wall of the moisture outlet 3, the sealing baffle 23 is arranged on the inner side of the moisture outlet 3, and the outer end of the sealing baffle 23 slides on the inner side of the sealing groove 22, the circulation frame 24 is arranged on the top of the extrusion cylinder 2, and the circulation frame 24 is located above the moisture outlet 3, the air cylinder one 25 is arranged on the top of the circulation frame 24, and the output end of the air cylinder one 25 is connected with the top center position of the sealing baffle 23, the drainage frame 27 is arranged on the front of the extrusion cylinder 2, and the drainage frame 27 cooperates with the moisture outlet 3, and the exhaust fan 28 is arranged on the front of the drainage frame 27.

[0055] The detection groove 14 provides the mounting position for the humidity sensor 15 and the temperature sensor 16, the humidity sensor 15 and the temperature sensor 16 can detect the temperature and humidity of the heating inner cylinder 11 in real time, when the humidity in the heating inner cylinder 11 is higher than the preset humidity value, the air cylinder one 25 works to pull the sealing baffle 23, the outer end of the sealing baffle 23 slides on the inner side of the sealing groove 22 and moves upward to remove the shielding of the moisture outlet 3, the gas in the heating inner cylinder 11 is discharged through the moisture outlet 3, the drainage frame 27 provides the mounting position for the exhaust fan 28, the exhaust fan 28 works to accelerate the gas discharge efficiency, when the humidity in the heating inner cylinder 11 is lower than the preset humidity value, the humidifying device 17 works to increase the humidity in the heating inner cylinder 11 through the humidifying head 18, and the humidity in the heating inner cylinder 11 is accurately adjusted according to the hot melt state of the molding device.

[0056] Please refer to Figure 1 、 Figure 3 、 Figure 5 、 Figure 6 and Figure 7 , a cable protection pipe extrusion molding device and a production method thereof.

[0057] The top end inner wall center position of the circulating water tank 6 is provided with a support plate 39, the top of the support plate 39 is provided with a hydraulic seat 8, the output end of the hydraulic seat 8 is provided with a smooth support frame 46, the inner side of the smooth support frame 46 is provided with a power assisting groove 47, the inner wall of the power assisting groove 47 is provided with a horizontal hand rod 48, the inner side of the power assisting groove 47 is movably provided with a stabilizing block 49, the telescopic end of the horizontal hand rod 48 is connected with the outer side of the stabilizing block 49, the top of the stabilizing block 49 is provided with a regulating groove 50, the bottom wall of the regulating groove 50 is provided with a micro hand rod 51, the telescopic end of the micro hand rod 51 is provided with a power assisting plate 52, the outer end of the forming outer mold 4 is provided with an outer cooling assembly, the outer cooling assembly is used for cooling the outer side of the cable protection pipe, the outer cooling assembly comprises a fixed outer pipe support 7 and a movable outer pipe support 44, the bottom of the fixed outer pipe support 7 is symmetrically provided with a cylinder two 41, the bottom end of the cylinder two 41 is installed on the top of the circulating water tank 6, the top of the fixed outer pipe support 7 is provided with the movable outer pipe support 44, the inner side of the fixed outer pipe support 7 and the movable outer pipe support 44 is provided with a cooling cover 45, the inside of the forming outer mold 4 is coaxially provided with a mold core 29, the inner ring outer side of the mold core 29 is provided with a conduction groove 30, the bottom wall of the conduction groove 30 is provided with a cooling head 31, the top of the extrusion cylinder 2 is provided with a forced air fan 21, the output end of the forced air fan 21 is connected with the input end of the cooling head 31;

[0058] After the extrusion molding, the cable protection pipe moves to the circulating water tank 6, when the cable protection pipe moves above the smooth support frame 46, the hydraulic seat 8 works to make the cable protection pipe in a horizontal state, the smooth support frame 46 supports the cable protection pipe, the inner surface of the smooth support frame 46 is made of smooth material and does not hinder the movement of the cable protection pipe, the outer wall of the cable protection pipe contacts with the power assisting plate 52 and continues to move to the outer end, the micro hand rod 51 works to push the power assisting plate 52 to move inward to hold up the cable protection pipe, a plurality of horizontal hand rods 48 work to push the stabilizing block 49 to move in the power assisting groove 47 to drive the power assisting plate 52 to adjust the position in the horizontal direction, the power assisting plate 52 assists to push the cable protection pipe to make the movement more efficient, supporting the formed protection pipe prevents the formed cable protection pipe from being broken during the discharging process;

[0059] During the discharging process of the cable protection pipe, the cable protection pipe passes through the inner side of the outer cooling assembly, the lifting hand rod 43 works to push the bottom end of the movable outer pipe support 44, the circulating pump 40 runs to extract the cooling water in the circulating water tank 6, the cooling water is sprayed out through the cooling cover 45 to continuously water cool the outer wall of the cable protection pipe, while the outer cooling assembly water cools the outer wall of the cable protection pipe, the forced air fan 21 runs to spray the forced cooling air through the cooling head 31 to air cool the inner wall of the cable protection pipe, the inner wall and the outer wall of the extruded cable protection pipe are respectively air cooled and water cooled to prevent the bending deformation of the formed cable protection pipe.

[0060] Please refer to Figure 1 、 Figure 2 and Figure 9 , a cable protection pipe extrusion molding device and its production method;

[0061] The controller 10 and the cooling molding module are mounted on the top of the base 1, the controller 10 includes a control module and a receiving module, the control module is used for controlling the working state of the extrusion molding device, and the receiving module is used for receiving the output signals of the humidity sensor 15 and the temperature sensor 16; the output end of the control module is connected with the feeding pretreatment unit, the discharging auxiliary unit, the hot-melt humidity adjusting unit and the cooling molding module; and the cooling molding module includes an outer cooling assembly and an inner cooling unit;

[0062] The feeding pretreatment unit is used for pretreating and discharging the raw materials; the discharging auxiliary unit is used for assisting the discharge of the cable protection pipe; the hot-melt humidity adjusting unit is used for detecting and controlling and adjusting the internal temperature and humidity of the heating inner cylinder 11; the cooling molding module is used for cooling and shaping the cable protection pipe; the inner cooling unit air-cools the inner wall of the cable protection pipe; and the output end of the receiving module is connected with a humidity comparison unit, which is used for comparing the internal humidity value of the heating inner cylinder 11 with a preset value.

[0063] The production steps of the extrusion molding device are as follows:

[0064] S1, first, the production plastic raw materials are added into the storage tank 32, the stirring motor 34 is operated to drive the dispersion rack 35 to rotate to uniformly stir and scatter the raw materials in the storage tank 32, the discharging valve 37 is opened to make the raw materials in the storage tank 32 fall into the extrusion cylinder 2, the heating inner cylinder 11 heats the raw materials, the feeding motor 13 is operated to drive the feeding screw 12 to rotate to continuously feed the hot-melt raw materials, the outer forming die 4 hot-melt extrudes and processes the raw materials, and the exhaust fan 20 works to exhaust the gas in the heating inner cylinder 11 to the outside;

[0065] S2, the extrusion-molded cable protection pipe moves towards the circulating water tank 6, when the cable protection pipe moves above the smooth support frame 46, the hydraulic seat 8 works to make the cable protection pipe in a horizontal state, the smooth support frame 46 supports the cable protection pipe, the outer wall of the cable protection pipe contacts the power assisting plate 52 and continues to move to the outer end, the micro hand lever 51 works to push the power assisting plate 52 to make the power assisting plate 52 move inward to hold up the cable protection pipe, a plurality of horizontal hand levers 48 work to push the stabilizing blocks 49 to move in the power assisting groove 47 to drive the power assisting plate 52 to adjust the position in the horizontal direction, the power assisting plate 52 assists the pushing of the cable protection pipe to make the moving efficiency higher, after one power assisting operation is completed, the power assisting plate 52 is reset and the next assisting operation is performed;

[0066] S3, the cable protection pipe passes through the inside of the outer cooling assembly during discharging, the lifting handle 43 works to push the bottom end of the movable outer pipe frame 44, the distance between the movable outer pipe frame 44 and the fixed outer pipe frame 7 is adjusted so that the movable outer pipe frame 44 and the fixed outer pipe frame 7 do not contact the outer wall of the cable protection pipe, the circulating pump 40 runs to extract the cooling water in the circulating water tank 6, the cooling water is sprayed out of the cooling cover 45 to continuously water cool the outer wall of the cable protection pipe, and the cooling water is filtered by the fine filter screen 38 and falls into the circulating water tank 6.

[0067] In step S1, the following steps are further included:

[0068] S11, the temperature sensor 16 and the humidity sensor 15 monitor the temperature and humidity in the heating inner cylinder 11 in real time, when the humidity in the heating inner cylinder 11 is higher than the preset humidity value, the air cylinder 25 works to pull the sealing baffle 23, the outer end of the sealing baffle 23 slides in the sealing groove 22 and moves upward to remove the shielding of the humidity outlet 3, the gas in the heating inner cylinder 11 is discharged through the humidity outlet 3, and the exhaust fan 28 works to speed up the gas discharge efficiency.

[0069] S12, when the humidity in the heating inner cylinder 11 is lower than the preset humidity value, the humidifying device 17 works to increase the humidity in the heating inner cylinder 11 through the humidifying head 18.

[0070] In step S3, the following steps are further included:

[0071] S31, while the outer cooling assembly performs water cooling operation on the outer wall of the cable protection pipe, the forced air blower 21 runs to spray forced cooling air through the cooling head 31 to air cool the inner wall of the cable protection pipe;

[0072] S32, when the cable protection pipe after cooling passes through the wiping chassis 9 and the inside of the wiping frame 53, the water scraping frame 26 scrapes the water attached to the outer wall of the cable protection pipe, and the quick-drying suction pad 54 contacts the outer wall of the cable protection pipe to wipe the residual water.

[0073] Working principle: when using the device, first add the production of plastic raw materials to the storage tank 32, stirring motor 34 operation drives the dispersion material frame 35 rotation to the uniform stirring of the raw material in the storage tank 32, the discharge valve 37 open the raw material in the storage tank 32 falls into the extrusion cylinder 2, heating inner cylinder 11 on the raw material heating, feed motor 13 operation drives the feed screw 12 rotation to push the hot melt material for continuous conveying, forming outer mold 4 on the raw material for hot melt extrusion processing, exhaust fan 20 work will heat the inner cylinder 11 of the gas to the outside, temperature sensor 16 and humidity sensor 15 on the temperature and humidity of the heating inner cylinder 11 real-time monitoring, heating inner cylinder 11 inside the humidity is higher than the preset humidity value when the cylinder 25 work on the sealing baffle 23 pull, sealing baffle 23 outer end in the sealing groove 22 inside the slide and move up to remove the shielding of the moisture outlet 3, the gas in the heating inner cylinder 11 through the moisture outlet 3 exhaust, exhaust fan 28 work to speed up the gas exhaust efficiency, heating inner cylinder 11 inside the humidity is lower than the preset humidity value when the humidification device 17 work through the humidification head 18 to increase the humidity inside the heating inner cylinder 11;

[0074] The extruded cable protection tube moves to the circulating water tank 6, the hydraulic seat 8 works to make the cable protection tube in a horizontal state when the cable protection tube moves above the smooth support frame 46, the smooth support frame 46 supports the cable protection tube, the outer wall of the cable protection tube contacts the booster plate 52 and continues to move to the outer end, the micro hand lever 51 works to push the booster plate 52 to make it move inward to hold up the cable protection tube, the multiple horizontal hand levers 48 work to push the stabilizing block 49 to make it move inside the booster groove 47 to drive the booster plate 52 to adjust the position in the horizontal direction, the booster plate 52 assists the pushing of the cable protection tube to make the moving efficiency higher, after one boosting operation, the booster plate 52 resets and performs the next assisting operation;

[0075] The cable protection tube passes through the inside of the outer cooling assembly during the discharging process, the lifting hand lever 43 works to push the bottom end of the movable outer pipe frame 44 to adjust the distance between the movable outer pipe frame 44 and the fixed outer pipe frame 7 so that they do not contact the outer wall of the cable protection tube, the circulating pump 40 runs to extract the cooling water in the circulating water tank 6, the cooling water is sprayed out through the cooling cover 45 to continuously water cool the outer wall of the cable protection tube, the cooling water falls into the circulating water tank 6 after being filtered by the fine filter screen 38, the outer cooling assembly performs water cooling operation on the outer wall of the cable protection tube while the forced draught fan 21 runs to spray the forced cooling air through the cooling head 31 to air cool the inner wall of the cable protection tube, the cable protection tube after cooling passes through the inside of the wiping chassis 9 and the wiping frame 53, the water scraping frame 26 scrapes off the water attached to the outer wall of the cable protection tube.

[0076] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims with respect to the figures of the patent document.

Claims

1. A cable protection tube extrusion molding device, comprising a base (1), an extrusion cylinder (2) and a molding outer mold (4), characterized in that: An extrusion barrel (2) is installed on the top of the base (1), a forming outer mold (4) is installed on the outer end of the extrusion barrel (2), a circulating water tank (6) is installed on the outer side of the base (1), an outer cooling component is provided on the outer end of the forming outer mold (4), and the outer cooling component is used to cool the outer side of the cable protection tube, the outer cooling component includes a fixed outer tube rack (7) and a movable outer tube rack (44), a cylinder 2 (41) is symmetrically installed on the bottom of the fixed outer tube rack (7), and the bottom end of the cylinder 2 (41) is installed on the top of the circulating water tank (6), a movable outer tube rack (44) is provided on the top of the fixed outer tube rack (7), and a cooling cover (45) is installed on the inner side of the fixed outer tube rack (7) and the movable outer tube rack (44); A heating inner cylinder (11) is installed on the inner side of the extrusion cylinder (2), a feeding screw (12) is installed on the inner side of the heating inner cylinder (11), a feeding motor (13) is installed on the outer side of the extrusion cylinder (2), and the output end of the feeding motor (13) is connected to the input end of the feeding screw (12), a detection groove (14) is opened on the inner side of the top of the heating inner cylinder (11), a humidity sensor (15) is installed on the inner wall of the detection groove (14), and a temperature sensor (16) is installed on the inner side of the detection groove (14), a humidifying device (17) is installed on the top of the extrusion cylinder (2), and a humidifying head (18) is installed on the output end of the humidifying device (17), a bracket (19) is installed at the top center position of the base (1), and the top end of the bracket (19) is connected to the bottom of the extrusion cylinder (2), and an exhaust fan (20) is installed on the front of the extrusion cylinder (2); A moisture outlet (3) is provided through the top of the front face of the extrusion barrel (2), a sealing groove (22) is provided on the inner wall of the moisture outlet (3), a sealing baffle (23) is installed on the inner side of the moisture outlet (3), and the outer end of the sealing baffle (23) slides on the inner side of the sealing groove (22), a circulation rack (24) is installed on the top of the extrusion barrel (2), and the circulation rack (24) is located directly above the moisture outlet (3), a cylinder 1 (25) is installed on the top of the circulation rack (24), and the output end of the cylinder 1 (25) is connected to the top center position of the sealing baffle (23), a drainage rack (27) is installed on the front face of the extrusion barrel (2), and the drainage rack (27) cooperates with the moisture outlet (3), and an exhaust fan (28) is installed on the front face of the drainage rack (27); A mold core (29) is coaxially arranged inside the outer molding mold (4), a conduction groove (30) is provided on the outer side of the inner ring of the mold core (29), a cooling head (31) is installed on the bottom wall of the conduction groove (30), a forced fan (21) is installed on the top of the extrusion barrel (2), and the output end of the forced fan (21) is connected to the input end of the cooling head (31); A pellet feeding bin (5) is mounted on the top of the extrusion barrel (2), a storage tank (32) is mounted on the top of the pellet feeding bin (5), a motor plate (33) is mounted on the inner wall of the storage tank (32), a stirring motor (34) is mounted on the top of the motor plate (33), a dispersion rack (35) is mounted on the output end of the stirring motor (34), a bending plate (36) is mounted on the inner wall of the pellet feeding bin (5), and a discharge valve (37) is mounted on the bottom of the bending plate (36); A fine filter (38) is installed on the inner side of the circulating water tank (6), a circulating pump (40) is installed on the front side of the circulating water tank (6), and the output end of the circulating pump (40) is connected to the input end of the cooling cover (45), a guide groove (42) is opened on the top of the fixed outer tube rack (7), a lifting handle (43) is installed on the bottom wall of the guide groove (42), and the telescopic end of the lifting handle (43) is connected to the bottom of the movable outer tube rack (44), a wiping base (9) is installed on the top of the wiping base (9), a wiping frame (53) is installed on the top of the wiping base (9), a quick-drying suction pad (54) is installed on the inner side of the wiping frame (53), and a wiper frame (26) is installed on the side of the wiping frame (53) close to the fixed outer tube rack (7); A support plate (39) is installed at the center position of the inner wall of the top end of the circulating water tank (6), a hydraulic seat (8) is installed on the top of the support plate (39), a smooth support frame (46) is installed on the output end of the hydraulic seat (8), a power-assisting groove (47) is opened on the inner side of the smooth support frame (46), a horizontal hand lever (48) is installed on the inner wall of the power-assisting groove (47), a stabilizing block (49) is movably installed on the inner side of the power-assisting groove (47), and the telescopic end of the horizontal hand lever (48) is connected to the outer side of the stabilizing block (49), a regulating groove (50) is opened on the top of the stabilizing block (49), a micro hand lever (51) is installed on the bottom wall of the regulating groove (50), and a power-assisting plate (52) is installed on the telescopic end of the micro hand lever (51).

2. The cable protection tube extrusion molding device according to claim 1, characterized in that: A controller (10) is installed on the top of the base (1), and the controller (10) includes a control module and a receiving module. The control module is used to control the working state of the extrusion molding device, and the receiving module is used to receive the output signals of the humidity sensor (15) and the temperature sensor (16). The output end of the control module is connected to a loading pretreatment unit, a discharging auxiliary unit, a hot melt humidity adjustment unit and a cooling molding module. The loading pretreatment unit is used to pretreatment and discharge the raw materials, the discharging auxiliary unit is used to assist the cable protection tube in discharging, the hot melt humidity adjustment unit is used to detect and control the internal temperature and humidity of the heating inner tube (11), and the cooling molding module is used to cool and shape the cable protection tube. The cooling molding module includes an external cooling component and an internal cooling unit. The internal cooling unit performs air cooling on the inner wall of the cable protection tube. The output end of the receiving module is connected to a humidity comparison unit, and the humidity comparison unit is used to compare the internal humidity value of the heating inner tube (11) with a preset value.

3. The production method of a cable protection tube extrusion molding device according to claim 2, characterized in that: The production steps of the extrusion molding device are as follows: S1. First, the production plastic raw materials are added into the storage tank (32). The stirring motor (34) is operated to drive the dispersion rack (35) to rotate and uniformly disperse the raw materials in the storage tank (32). The discharge valve (37) is opened to allow the raw materials in the storage tank (32) to fall into the extrusion barrel (2). The heating inner barrel (11) heats the raw materials. The feeding motor (13) is operated to drive the feeding screw (12) to rotate and push the hot melt raw materials to be continuously conveyed. The forming outer mold (4) performs hot melt extrusion processing on the raw materials. The exhaust fan (20) is operated to discharge the gas in the heating inner barrel (11) to the outside. S2, the cable protection tube after extrusion is moved toward the circulating water tank (6), and when the cable protection tube moves to the top of the smooth support frame (46), the hydraulic seat (8) works to make the cable protection tube in a horizontal state, and the smooth support frame (46) supports the cable protection tube. The outer wall of the cable protection tube contacts the power plate (52) and continues to move toward the outer end. The micro hand lever (51) works to push the power plate (52) so that the power plate (52) moves inward to lift the cable protection tube. The multiple sets of horizontal hand levers (48) work to push the stable block (49) so that it moves inside the power groove (47) and drives the power plate (52) to adjust its position in the horizontal direction. The power plate (52) assists in pushing the cable protection tube to make it move more efficiently. After one power operation is completed, the power plate (52) is reset and the next auxiliary operation is performed. S3. During the discharge process, the cable protection tube passes through the inner side of the outer cooling assembly, and the lifting lever (43) works to push the bottom end of the movable outer tube rack (44), and adjusts the distance between the movable outer tube rack (44) and the fixed outer tube rack (7) so that the movable outer tube rack (44) and the fixed outer tube rack (7) do not contact the outer wall of the cable protection tube. The circulating pump (40) operates to extract the cooling water in the circulating water tank (6), and the cooling water is sprayed out through the cooling cover (45) to continuously cool the outer wall of the cable protection tube. The cooling water is filtered by the fine filter (38) and falls into the circulating water tank (6).

4. The production method of a cable protection tube extrusion molding device according to claim 3, characterized in that: In the step S1, the following steps are also included: S11, the temperature sensor (16) and the humidity sensor (15) monitor the temperature and humidity in the heating inner cylinder (11) in real time. When the humidity inside the heating inner cylinder (11) is higher than the preset humidity value, the cylinder 1 (25) works to pull the sealing baffle (23). The outer end of the sealing baffle (23) slides inside the sealing groove (22) and moves upward to remove the obstruction of the moisture outlet (3). The gas in the heating inner cylinder (11) is discharged through the moisture outlet (3). The exhaust fan (28) works to accelerate the gas discharge efficiency. S12, when the humidity inside the heating inner cylinder (11) is lower than the preset humidity value, the humidifying device (17) works to increase the humidity inside the heating inner cylinder (11) through the humidifying head (18). In step S3, the following steps are also included: S31, the external cooling component performs water cooling on the outer wall of the cable protection tube and at the same time forces the fan (21) to operate, ejecting forced cooling air through the cooling head (31) to cool the inner wall of the cable protection tube; S32, after the cooling is completed, the cable protection tube passes through the wiping chassis (9) and the inner side of the wiping frame (53), and the water scraping frame (26) scrapes off the water attached to the outer wall of the cable protection tube, and the quick-drying suction pad (54) contacts the outer wall of the cable protection tube to wipe the residual water on the outer wall.

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