Forming processing device and method for PVC cable pipe

Abstract

The invention relates to the technical field of PVC cable pipe processing, and discloses a PVC cable pipe forming processing device and method.The PVC cable pipe forming processing device comprises a PVC cable pipe extruder and a mold arranged at the discharging end of the PVC cable pipe extruder and further comprises a PVC cable pipe preliminary cooling device used for cooling a PVC cable pipe extruded out of a discharging opening of the mold; according to the device provided by the scheme, a traditional mode that a prefabricated metal net or a reinforcing material sleeves the exterior of a prepared and formed PVC cable pipe is improved into a mode that 3D printing of the metal net or the reinforcing material is carried out on the surface of the PVC cable pipe in the preparation process of the PVC cable pipe, so that the metal net or the reinforcing material is embedded outside the PVC cable pipe, and through a synchronous cooling and solidifying method, the PVC cable pipe is subjected to 3D printing; deformation, cracks, looseness or strength reduction of the reinforcing material caused by thermal stress are avoided, and the PVC cable pipe is better protected.

Description

Technical Field

[0001] The invention relates to the technical field of PVC cable tube processing, and in particular to a PVC cable tube forming processing device and method. Background Art

[0002] PVC cable tube, as a common protective material for wires and cables, is widely used in construction, industry, communications and other fields.

[0003] At present, as the wire and cable industry continues to increase its requirements for cable tube performance, relying solely on PVC materials can no longer meet the needs of all application scenarios. Therefore, adding metal mesh or other reinforcing materials to PVC cable tubes has become a trend to increase the strength, durability and protection of cable tubes to adapt to the use requirements of complex environments; In the prior art, a prefabricated metal mesh or reinforcing material is usually sheathed on the outside of a prepared PVC cable tube. This method cannot provide good protection for the PVC cable tube because the bonding between the PVC cable tube and the reinforcing material is not tight enough and the presence of thermal stress may cause the reinforcing material to deform, crack, relax, or lose strength, leading to peeling. Summary of the invention

[0004] The object of the present invention is to provide a forming processing device and method for a PVC cable tube, aiming to solve the problems in the prior art.

[0005] The present invention is implemented as follows: a PVC cable tube forming processing device comprises a PVC cable tube extruder, a mold arranged at the discharge end of the PVC cable tube extruder, and also comprises a PVC cable tube preliminary cooling device for cooling the PVC cable tube extruded from the mold discharge port and a PVC cable tube strengthening processing device, wherein the PVC cable tube strengthening processing device comprises a U-shaped bracket, on which two groups of guide cylinders coaxially arranged with the discharge end of the PVC cable tube extruder are continuously mounted, and a protective cover is also slidably mounted on the guide cylinder at one end away from the PVC cable tube extruder; The outside of the two guide cylinders are connected with a sleeve ring and a mounting ring through a bearing, and a plurality of reinforcing mesh printing components are arranged on the outside of the mounting ring. The reinforcing mesh printing components located outside the two groups of guide cylinders rotate synchronously in opposite directions. The reinforcing mesh printing components respectively include a plurality of barrels and a print head. An electromagnetic hot melter is installed on the outside of the print head. The electromagnetic hot melter is used to hot-melt the material in the barrel and print it on the surface of the PVC cable pipe that has not been completely cooled through the print head to complete the processing operation.

[0006] Preferably, a support cover and a rotating motor are respectively provided on the top of the protective cover, the internal bearing of the support cover is connected to a first rotating rod, the first rotating rod is driven by a rotating motor belt, the upper bearing of the end of the U-shaped bracket away from the protective cover is connected to a second rotating rod, and the first rotating rod and the second rotating rod are staggered; The second rotating rod is provided with ribs on its exterior, and the first rotating rod and the second rotating rod are respectively sleeved with a first gear and a second gear meshing with each other on their exteriors.

[0007] Preferably, the first rotating rod is sleeved with a first pulley on the outside, the second rotating rod is sleeved with a second pulley on the outside through a rib, and the first rotating rod and the second rotating rod are respectively connected to the two sets of rings through belt transmission via the first pulley and the second pulley.

[0008] Preferably, a plurality of material racks are installed between the collar and the mounting ring, and the material racks are used to mount the barrel; A through slot is provided at the bottom of the material rack, and the material barrel supplies material to the print head through the through slot.

[0009] Preferably, a mounting seat is mounted on the mounting ring, and the print head is fixed via the mounting seat. A pumping machine is also provided on the mounting seat, and the pumping machine is used to pump material from the barrel to the print head.

[0010] Preferably, conductive rings are installed on the outside of the two guide tubes, and brushes acting on the surfaces of the conductive rings are evenly distributed on the inner walls of the rings.

[0011] Preferably, a switch electric telescopic machine is installed below the end of the U-shaped bracket, and the telescopic part of the switch electric telescopic machine is connected to the bottom of the protective cover.

[0012] Preferably, a connecting pipe is provided at the end of the guide cylinder facing away from one end of the PVC cable tube extruder, and the connecting pipe is provided with a liquid injection pipe, a liquid outlet pipe and a gas injection port, a heat exchange coil is connected between the liquid injection pipe and the liquid outlet pipe, the heat exchange coil is embedded in the inner wall of the guide cylinder, and the inner wall of the guide cylinder is also provided with an air jet along one side of the heat exchange coil, and the other end of the air jet is connected to the gas injection port.

[0013] A forming method for a PVC cable tube, applied to a forming device for a PVC cable tube, comprises the following steps: Step 1: According to the density of the metal mesh or reinforcing material required to be reinforced for the required PVC cable tube, assemble the barrel, the extractor, the print head and the electromagnetic fuser on the mounting ring of the PVC cable tube reinforcement processing device; Step 2: After the raw material extruded by the PVC cable tube extruder is formed by the mold, it is initially shaped by the PVC cable tube preliminary cooling device, and the temperature of the PVC cable tube is maintained between 70℃ and 80℃; Step 3: The PVC cable tube is fed into the PVC cable tube strengthening processing device. When it passes between the two sets of guide cylinders, the rotating motor is started to drive the two sets of guide cylinders to rotate synchronously in opposite directions. At the same time, the material extraction machine and electromagnetic heat fuser are started synchronously to continuously heat-melt the metal mesh or reinforcement material and then print it into a mesh through two sets of print heads; Step 4: The strengthened PVC cable tube continues to be transported to the interior of the heat exchange coil. During this process, coolant is continuously injected into the inner wall of the guide tube through the injection pipe and the outlet pipe of the takeover device, and positive pressure gas is injected through the gas injection port. After the positive pressure gas is cooled by the coolant, it is cooled through the jet port to complete the processing operation.

[0014] The invention discloses a forming and processing device and method for a PVC cable tube, and the beneficial effects are as follows: the device provided by the scheme improves the traditional preparation and forming of the PVC cable tube by sheathing a prefabricated metal mesh or reinforcing material on the outside, and performs 3D printing of the metal mesh or reinforcing material on the surface of the PVC cable tube during the preparation process, so that the metal mesh or reinforcing material is embedded outside the PVC cable tube, and the two are tightly combined. Through the method of synchronous cooling and solidification, the reinforcing material will not be deformed, cracked, loosened or the strength decreased due to thermal stress, and the PVC cable tube is better protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a molding processing device for a PVC cable tube provided in an embodiment of the present invention; Figure 2 It is a schematic diagram of a PVC cable tube strengthening processing device of a PVC cable tube forming processing device provided in an embodiment of the present invention; Figure 3 A PVC cable tube forming and processing device provided by an embodiment of the present invention Figure 2 Schematic diagram of the local internal structure at A in FIG. Figure 4 It is a schematic diagram of the internal structure of a PVC cable tube strengthening processing device of a PVC cable tube forming processing device provided in an embodiment of the present invention; Figure 5 It is a schematic structural diagram of a reinforcing mesh printing component of a PVC cable tube forming processing device provided in an embodiment of the present invention.

[0016] Marking Description: 1. PVC cable tube extruder; 2. Mould; 3. PVC cable tube preliminary cooling device; 4. PVC cable tube strengthening processing device; 41. U-shaped bracket; 42. guide tube; 43. protective cover; 44. reinforced net printing assembly; 421, receiver; 431, switch electric telescopic machine; 432, support cover; 433, first rotating rod; 434, second rotating rod; 4211, liquid injection pipe; 4212, liquid outlet pipe; 4213, gas injection port; 4214, heat exchange coil; 4215, gas injection port; 4321, a rotating motor; 4331, a first gear; 4332, a first pulley; 4341, a second gear; 4342, a second pulley; 441, sleeve ring; 442, brush; 443, conductive ring; 444, mounting ring; 445, material rack; 446, barrel; 447, extractor; 448, print head; 449, electromagnetic fuser; 4441, mounting base. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0019] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0020] In this embodiment: Reference Figure 1-5 As shown, a preferred embodiment of the present invention is provided.

[0021] The PVC cable tube forming processing device of the present embodiment comprises a PVC cable tube extruder 1, a mold 2 arranged at the discharge end of the PVC cable tube extruder 1, and also comprises a PVC cable tube preliminary cooling device 3 for cooling the PVC cable tube extruded from the discharge port of the mold 2 and a PVC cable tube strengthening processing device 4, wherein the PVC cable tube strengthening processing device 4 comprises a U-shaped bracket 41, on which two groups of guide cylinders 42 coaxially arranged with the discharge end of the PVC cable tube extruder 1 are continuously mounted, and a protective cover 43 is also slidably mounted on the guide cylinder 42 at one end away from the PVC cable tube extruder 1; The outside of the two guide cylinders 42 are connected with a ring 441 and a mounting ring 444 through a bearing. A plurality of reinforcing mesh printing components 44 are arranged on the outside of the mounting ring 444. The reinforcing mesh printing components 44 located outside the two groups of guide cylinders 42 rotate synchronously in opposite directions. The reinforcing mesh printing components 44 respectively include a plurality of barrels 446 and a print head 448. An electromagnetic hot melter 449 is installed on the outside of the print head 448. The electromagnetic hot melter 449 is used to hot-melt the material in the barrel 446 and print it on the surface of the PVC cable pipe that has not been fully cooled through the print head 448 to complete the processing operation.

[0022] In the attached Figure 2-3 In order to realize that the two groups of guide cylinders 42 can rotate synchronously in opposite directions, a support cover 432 and a rotating motor 4321 are respectively arranged on the top of the protective cover 43, and the internal bearing of the support cover 432 is connected to a first rotating rod 433, and the first rotating rod 433 is driven by a belt of the rotating motor 4321, and the upper bearing of the end of the U-shaped bracket 41 away from the protective cover 43 is connected to a second rotating rod 434, and the first rotating rod 433 and the second rotating rod 434 are staggered, and the outer part of the second rotating rod 434 is provided with ribs, and the outer parts of the first rotating rod 433 and the second rotating rod 434 are respectively sleeved with first gears 4331 and second gears 4331 and second gears 4331 and 4331 that mesh with each other. Gear 4341, the first rotating rod 433 is sleeved with a first belt pulley 4332 on its exterior, the second rotating rod 434 is sleeved with a second belt pulley 4342 on its exterior through ribs, the first rotating rod 433 and the second rotating rod 434 are respectively connected to the two sets of sleeve rings 441 through the first belt pulley 4332 and the second belt pulley 4342 through the belt transmission, when the first rotating rod 433 is driven by the rotating motor 4321 to rotate, the first gear 4331 and the second gear 4341 meshing with each other can synchronously drive the second rotating rod 434 to rotate in the opposite direction, and then the two sets of guide cylinders 42 can be driven by the belts to rotate in the opposite direction; It is worth noting that a switch electric telescopic machine 431 is installed below the end of the U-shaped bracket 41, and the telescopic part of the switch electric telescopic machine 431 is connected to the bottom of the protective cover 43. Since ribs are provided on the outside of the second rotating rod 434, when the protective cover 43 is driven by the switch electric telescopic machine 431, the second gear 4341 can still maintain a meshing state with the first gear 4331, and at the same time, it does not affect the function of the second rotating rod 434 to drive the guide cylinder 42 to rotate using the second pulley 4342.

[0023] In the attached Figure 4-5 In the figure, a plurality of material racks 445 are installed between the sleeve ring 441 and the mounting ring 444. The material rack 445 is used to mount the barrel 446. A through slot is provided at the bottom of the material rack 445. The barrel 446 supplies material to the print head 448 through the through slot. A mounting seat 4441 is installed on the mounting ring 444. The print head 448 is fixed by the mounting seat 4441. A pumping machine 447 is also provided on the mounting seat 4441. The pumping machine 447 includes a servo motor and a guide wheel sleeved on its output shaft. The guide wheel rotates and pushes the printing material of the barrel 446 toward the print head 448 through friction. The pumping machine 447 is used to pump material from the barrel 446 to the print head 448.

[0024] Among them, conductive rings 443 are installed on the outside of the two guide cylinders 42, and brushes 442 acting on the surface of the conductive rings 443 are evenly distributed on the inner wall of the ring 441. Through the action of the brushes 442, it is ensured that during the rotation of the guide cylinder 42, various electrical components thereon can be powered by the conductive rings 443.

[0025] In this embodiment, in the attached Figure 5 In the embodiment, a connecting pipe 421 is provided at the end of the guide cylinder 42 away from one end of the PVC cable tube extruder 1, and a liquid injection pipe 4211, a liquid outlet pipe 4212 and a gas injection port 4213 are provided on the connecting pipe 421, and a heat exchange coil 4214 is connected between the liquid injection pipe 4211 and the liquid outlet pipe 4212, and the heat exchange coil 4214 is embedded in the inner wall of the guide cylinder 42, and the inner wall of the guide cylinder 42 is also provided with a gas injection port 4215 along one side of the heat exchange coil 4214, and the other side of the gas injection port 4215 is provided with a gas injection port 4215. The end is connected with the gas injection port 4213, and the coolant is continuously injected into the heat exchange coil 4214 through the injection pipe 4211, and the positive-pressure gas is blown into the air jet 4215 in coordination with the air injection port 4213. The positive-pressure gas is cooled by the coolant and then cools the reinforced PVC cable pipe through the air jet 4215 to complete the processing operation, so that the printed metal mesh or reinforcement material and the PVC cable pipe are cooled at the same time, avoiding the situation that the temperature changes of the two are different, resulting in loose combination or structural damage, thereby improving the quality of the finished product.

[0026] The present embodiment also includes a forming processing method for a PVC cable tube, which is applied to the forming processing device for a PVC cable tube. According to the density of the metal mesh or reinforcing material required to be reinforced for the PVC cable tube, a barrel 446, a pumping machine 447, a printing head 448 and an electromagnetic hot melter 449 are installed on the mounting ring 444 of the PVC cable tube reinforcing processing device 4; after the raw material extruded by the PVC cable tube extruder 1 is formed by the mold 2, it is initially shaped by the PVC cable tube preliminary cooling device 3, and the temperature of the PVC cable tube is maintained between 70°C and 80°C; the PVC cable tube is sent into the PVC cable tube reinforcing processing device 4, and after passing through the two groups When the guide cylinders 42 are between each other, the rotating motor 4321 will be started to drive the two groups of guide cylinders 42 to rotate synchronously in opposite directions. At the same time, the extractor 447 and the electromagnetic heat fuser 449 will be started synchronously to continuously heat-melt the metal mesh or reinforcing material and then cross-print it into a mesh through two groups of print heads 448; the reinforced PVC cable pipe continues to be transported to the interior of the heat exchange coil 4214. During this process, coolant is continuously injected into the inner wall of the guide cylinder 42 through the injection pipe 4211 and the outlet pipe 4212 of the connecting pipe 421, and positive pressure gas is injected through the gas injection port 4213. After the positive pressure gas is cooled by the coolant, it is cooled through the air jet 4215 to complete the processing operation.

[0027] The device provided in the present invention improves the traditional PVC cable tube by sheathing a prefabricated metal mesh or reinforcing material on the outside of the prepared PVC cable tube, and performs 3D printing of the metal mesh or reinforcing material on the surface of the PVC cable tube during the preparation process, so that the metal mesh or reinforcing material is embedded outside the PVC cable tube, and the two are tightly combined. Through the method of synchronous cooling and solidification, the reinforcing material will not be deformed, cracked, relaxed or the strength decreased due to thermal stress, thereby better protecting the PVC cable tube.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A PVC cable tube forming processing device, comprising a PVC cable tube extruder, and a mold arranged at the discharge end of the PVC cable tube extruder, characterized in that: It also includes a PVC cable tube preliminary cooling device and a PVC cable tube strengthening processing device for cooling the PVC cable tube extruded from the die outlet, the PVC cable tube strengthening processing device comprising a U-shaped bracket, on which two groups of guide cylinders coaxially arranged with the discharge end of the PVC cable tube extruder are continuously mounted, and a protective cover is slidably mounted on the guide cylinder at one end away from the PVC cable tube extruder; The outside of the two guide cylinders are connected with a sleeve ring and a mounting ring through a bearing, and a plurality of reinforcing mesh printing components are arranged on the outside of the mounting ring. The reinforcing mesh printing components located outside the two groups of guide cylinders rotate synchronously in opposite directions. The reinforcing mesh printing components respectively include a plurality of barrels and a print head. An electromagnetic hot melter is installed on the outside of the print head. The electromagnetic hot melter is used to hot-melt the material in the barrel and print it on the surface of the PVC cable pipe that has not been completely cooled through the print head to complete the processing operation.

2. A PVC cable tube forming and processing device as claimed in claim 1, characterized in that: A support cover and a rotating motor are respectively arranged on the top of the protective cover, a first rotating rod is connected to the internal bearing of the support cover, and the first rotating rod is driven by the rotating motor belt, and a second rotating rod is connected to the upper bearing of the end of the U-shaped bracket away from the protective cover, and the first rotating rod and the second rotating rod are staggered; The second rotating rod is provided with ribs on its exterior, and the first rotating rod and the second rotating rod are respectively sleeved with a first gear and a second gear meshing with each other on their exteriors.

3. A PVC cable tube forming and processing device as claimed in claim 2, characterized in that: The first rotating rod is sleeved with a first belt pulley on the outside, the second rotating rod is sleeved with a second belt pulley on the outside through a rib, and the first rotating rod and the second rotating rod are respectively connected to two sets of ring belt transmissions through the first belt pulley and the second belt pulley.

4. A PVC cable tube forming and processing device as claimed in claim 1, characterized in that: A plurality of material racks are installed between the sleeve ring and the mounting ring, and the material racks are used to mount the barrel; A through slot is provided at the bottom of the material rack, and the material barrel supplies material to the print head through the through slot.

5. A PVC cable tube forming and processing device as claimed in claim 4, characterized in that: A mounting seat is mounted on the mounting ring, and the print head is fixed via the mounting seat. A material pumping machine is also arranged on the mounting seat, and the material pumping machine is used to pump material from the material barrel to the print head.

6. A PVC cable tube forming and processing device as claimed in claim 1, characterized in that: Conductive rings are installed on the outside of the two guide cylinders, and brushes acting on the surfaces of the conductive rings are evenly distributed on the inner walls of the sleeve rings.

7. A PVC cable tube forming and processing device as claimed in claim 1, characterized in that: A switch electric telescopic machine is installed below the end of the U-shaped bracket, and the telescopic part of the switch electric telescopic machine is connected to the bottom of the protective cover.

8. A PVC cable tube forming and processing device as claimed in claim 1, characterized in that: A connecting pipe is provided at the end of the guide cylinder away from one end of the PVC cable tube extruder, and the connecting pipe is provided with a liquid injection pipe, a liquid outlet pipe and an air injection port. A heat exchange coil is connected between the liquid injection pipe and the liquid outlet pipe. The heat exchange coil is embedded in the inner wall of the guide cylinder, and the inner wall of the guide cylinder is also provided with an air jet along one side of the heat exchange coil, and the other end of the air jet is connected to the air injection port.

9. A molding method for a PVC cable tube, characterized in that: A forming and processing device for a PVC cable tube as claimed in any one of claims 1 to 8 comprises the following steps: Step 1: According to the density of the metal mesh or reinforcing material required to be reinforced for the required PVC cable tube, assemble the barrel, the extractor, the print head and the electromagnetic fuser on the mounting ring of the PVC cable tube reinforcement processing device; Step 2: After the raw material extruded by the PVC cable tube extruder is formed by the mold, it is initially shaped by the PVC cable tube preliminary cooling device, and the temperature of the PVC cable tube is maintained between 70℃ and 80℃; Step 3: The PVC cable tube is fed into the PVC cable tube strengthening processing device. When it passes between the two sets of guide cylinders, the rotating motor is started to drive the two sets of guide cylinders to rotate synchronously in opposite directions. At the same time, the material extraction machine and electromagnetic heat fuser are started synchronously to continuously heat-melt the metal mesh or reinforcement material and then print it into a mesh through two sets of print heads; Step 4: The strengthened PVC cable tube continues to be transported to the interior of the heat exchange coil. During this process, coolant is continuously injected into the inner wall of the guide tube through the injection pipe and the outlet pipe of the takeover device, and positive pressure gas is injected through the gas injection port. After the positive pressure gas is cooled by the coolant, it is cooled through the jet port to complete the processing operation.

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