A PVC cable tube forming processing device and method

Abstract

The present invention relates to the technical field of PVC cable tube processing, and discloses a PVC cable tube forming processing device and method, comprising a PVC cable tube extruder, a mold arranged at the discharge end of the PVC cable tube extruder, and a PVC cable tube preliminary cooling device for cooling the PVC cable tube extruded from the mold discharge port. The device provided by this solution improves the traditional preparation of the PVC cable tube by sheathing a prefabricated metal mesh or reinforcing material on the outside of the 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. Through synchronous cooling and solidification, the reinforcing material will not be deformed, cracked, relaxed or reduced in strength due to thermal stress, thereby better protecting the PVC cable tube.

Description

Technical Field

[0001] The present 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 tubes, as a common protective material for wires and cables, are widely used in construction, industry, communications and other fields.

[0003] Currently, as the wire and cable industry continues to increase its requirements for cable conduit 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 conduits has become a trend to increase the strength, durability, and protective performance of cable conduits to adapt to the needs of use in complex environments.

[0004] In the prior art, a prefabricated metal mesh or reinforcing material is usually sheathed on the outside of the prepared PVC cable tube. However, due to the insufficient tightness between the PVC cable tube and the reinforcing material, the reinforcing material may deform, crack, become loose, or lose strength, leading to peeling, and thus cannot provide good protection for the PVC cable tube. Summary of the Invention

[0005] The object of the present invention is to provide a molding and processing device and method for PVC cable tubes, aiming to solve the problems in the prior art.

[0006] The present invention is achieved in this way: a PVC cable tube forming processing device includes a PVC cable tube extruder, a mold arranged at the discharge end of the PVC cable tube extruder, and also includes 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, the PVC cable tube strengthening processing device includes a U-shaped bracket, two groups of guide cylinders coaxially arranged with the discharge end of the PVC cable tube extruder are continuously mounted on the U-shaped bracket, and a protective cover is slidably mounted on the guide cylinder at one end away from the PVC cable tube extruder;

[0007] The outside of the two guide cylinders are connected to a collar and a mounting ring through a bearing. A number of reinforcing mesh printing components are provided on the outside of the mounting ring. The reinforcing mesh printing components located on the outside of the two groups of guide cylinders rotate synchronously in opposite directions. The reinforcing mesh printing components respectively include a number of barrels and print heads. 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 uncooled PVC cable pipe through the print head to complete the processing operation.

[0008] 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, and 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.

[0009] 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 that mesh with each other.

[0010] Preferably, the outside of the first rotating rod is sleeved with a first pulley, the outside of the second rotating rod is sleeved with a second pulley 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.

[0011] 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;

[0012] 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.

[0013] Preferably, a mounting seat is installed on the mounting ring, which fixes the print head through the mounting seat, and a material pump is also provided on the mounting seat, and the material pump is used to pump material from the barrel to the print head.

[0014] Preferably, 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 rings.

[0015] 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.

[0016] Preferably, 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 an injection pipe, a liquid outlet pipe and an air injection port. A heat exchange coil is connected between the injection pipe and the liquid outlet pipe, and 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.

[0017] A forming method for a PVC cable tube, applied to a forming device for a PVC cable tube, comprises the following steps:

[0018] Step 1: Install the barrel, extractor, print head, and electromagnetic fuser onto the mounting ring of the PVC cable tube reinforcement processing device according to the density of the metal mesh or reinforcement material required for the PVC cable tube.

[0019] 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℃;

[0020] Step 3: Feed the PVC cable tube into the PVC cable tube reinforcement processing device. When passing between the two sets of guide cylinders, the rotary motor is started to drive the two sets of guide cylinders to rotate synchronously in opposite directions. The material extraction machine and electromagnetic heat fuser are started simultaneously to continuously heat-fuse the metal mesh or reinforcement material and then print it into a mesh through the two sets of print heads;

[0021] 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 air jet port to complete the processing operation.

[0022] The present invention discloses a forming and processing device and method for PVC cable tubes, and the beneficial effects are as follows: the device provided by this solution improves the traditional preparation and forming of PVC cable tubes 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 combination between the two is tight. Through the method of synchronous cooling and solidification, the reinforcing material will not be deformed, cracked, relaxed or reduced in strength due to thermal stress, thereby better protecting the PVC cable tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of a PVC cable tube forming and processing device provided by an embodiment of the present invention;

[0024] Figure 2 Schematic diagram of a PVC cable tube strengthening processing device provided by an embodiment of the present invention;

[0025] Figure 3 This is a PVC cable tube forming and processing device provided by the embodiment of the present invention. Figure 2 Schematic diagram of the local internal structure at A in FIG;

[0026] Figure 4 This 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 by an embodiment of the present invention;

[0027] Figure 5 It is a structural schematic diagram of a reinforcement mesh printing component of a PVC cable tube forming and processing device provided by an embodiment of the present invention.

[0028] Marking Description:

[0029] 1. PVC cable tube extruder; 2. Mold; 3. PVC cable tube preliminary cooling device; 4. PVC cable tube strengthening processing device;

[0030] 41. U-shaped bracket; 42. Guide tube; 43. Protective cover; 44. Reinforced screen printing assembly;

[0031] 421, receiver;

[0032] 431. Switch electric telescopic mechanism; 432. Support cover; 433. First rotating rod; 434. Second rotating rod;

[0033] 4211, liquid injection pipe; 4212, liquid outlet pipe; 4213, air injection port; 4214, heat exchange coil; 4215, air jet port;

[0034] 4321, rotating motor; 4331, first gear; 4332, first pulley; 4341, second gear; 4342, second pulley;

[0035] 441. Ring; 442. Brush; 443. Conductive ring; 444. Mounting ring; 445. Material rack; 446. Material barrel; 447. Extractor; 448. Print head; 449. Electromagnetic fuser;

[0036] 4441, mounting base. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to 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.

[0038] 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 "up", "down", "left", "right", etc. indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply 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 limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0039] The implementation of the present invention is described in detail below with reference to specific embodiments.

[0040] In this embodiment:

[0041] Reference Figure 1-5 As shown, a preferred embodiment of the present invention is provided.

[0042] The PVC cable tube forming processing device of this embodiment includes a PVC cable tube extruder 1, a mold 2 arranged at the discharge end of the PVC cable tube extruder 1, and also includes 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. The PVC cable tube strengthening processing device 4 includes a U-shaped bracket 41. Two groups of guide cylinders 42 coaxially arranged with the discharge end of the PVC cable tube extruder 1 are continuously installed on the U-shaped bracket 41. A protective cover 43 is also slidably installed on the guide cylinder 42 at one end away from the PVC cable tube extruder 1.

[0043] The outside of the two guide cylinders 42 are connected to 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 uncooled PVC cable pipe through the print head 448 to complete the processing operation.

[0044] In the attached Figure 2-3 In order to realize that the above-mentioned two groups of guide cylinders 42 can rotate synchronously in opposite directions, a support cover 432 and a rotating motor 4321 are respectively provided on the top of the protective cover 43, and the internal bearing of the support cover 432 is connected to the first rotating rod 433, and the first rotating rod 433 is driven by the belt of the rotating motor 4321. The upper bearing of the end of the U-shaped bracket 41 away from the protective cover 43 is connected to the second rotating rod 434, and the first rotating rod 433 and the second rotating rod 434 are staggered. Ribs are provided on the outside of the second rotating rod 434, and the outsides 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 434 that mesh with each other. Gear 4341, the first rotating rod 433 is sleeved with a first pulley 4332 on its exterior, and the second rotating rod 434 is sleeved with a second 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 rings 441 through the first pulley 4332 and the second pulley 4342 via belt transmission. When the first rotating rod 433 is driven to rotate by the rotating motor 4321, the first gear 4331 and the second gear 4341 that are meshed 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 are driven by belts to rotate in the opposite direction.

[0045] 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 an engagement 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.

[0046] In the attached Figure 4-5 In the figure, several material racks 445 are installed between the collar 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 guide wheel sleeved with a servo motor and 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.

[0047] Among them, a conductive ring 443 is installed on the outside of the two guide cylinders 42, and brushes 442 acting on the surface of the conductive ring 443 are evenly distributed on the inner wall of the ring 441. Through the action of the brush 442, it is ensured that during the rotation of the guide cylinder 42, the various electrical components thereon can be powered by the conductive ring 443.

[0048] In this embodiment, Figure 5 In the embodiment, a pipe adapter 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 an air injection port 4213 are provided on the pipe adapter 421. A heat exchange coil 4214 is connected between the liquid injection pipe 4211 and the liquid outlet pipe 4212. 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 an air jet 4215 along one side of the heat exchange coil 4214. The other side of the air jet 4215 is provided with a nozzle 4215. The end is connected to the gas injection port 4213, and coolant is continuously injected into the heat exchange coil 4214 through the liquid injection pipe 4211, and positive pressure gas is blown into the air jet 4215 in conjunction with the air injection port 4213. After the positive pressure gas is cooled by the coolant, it is cooled by the air jet 4215 to cool the reinforced PVC cable pipe, completing the processing operation, allowing the printed metal mesh or reinforcement material and the PVC cable pipe to cool down at the same time, avoiding the situation where the temperature changes between the two are different, resulting in loose bonding or structural damage, thereby improving the quality of the finished product.

[0049] The present embodiment also includes a forming processing method of a PVC cable tube, which is applied to the forming processing device of the PVC cable tube. According to the density of the metal mesh or reinforcing material required to strengthen 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; the raw material extruded by the PVC cable tube extruder 1 is formed by the mold 2, and then is preliminarily 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 extraction machine 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 by the jet port 4215 to complete the processing operation.

[0050] The device provided in this solution improves the traditional method of sheathing a prefabricated metal mesh or reinforcing material on the outside of a prepared PVC cable tube by 3D printing a metal mesh or reinforcing material on its surface during the preparation process of the PVC cable tube. The metal mesh or reinforcing material is embedded in the outside of the PVC cable tube, and the two are tightly combined. Through synchronous cooling and solidification, the reinforcing material will not be deformed, cracked, relaxed or weakened due to thermal stress, thereby better protecting the PVC cable tube.

[0051] 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 scope of protection of the present invention.

Claims

1. A PVC cable tube forming device, comprising a PVC cable tube extruder and a mold arranged at the discharge end of the PVC cable tube extruder, characterized in that: The invention 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 includes a U-shaped bracket on which two sets of guide cylinders coaxially arranged with the discharge end of the PVC cable tube extruder are continuously mounted. A protective cover is also slidably mounted on the guide cylinder at one end away from the PVC cable tube extruder. The exteriors of the two guide cylinders are connected to collars and mounting rings via bearings. Several reinforcing mesh printing assemblies are disposed on the exteriors of the mounting rings. The reinforcing mesh printing assemblies located on the exteriors of the two sets of guide cylinders rotate synchronously in opposite directions. The reinforcing mesh printing assemblies each include several barrels and print heads. An electromagnetic hot melter is mounted on the exteriors of the print heads. The electromagnetic hot melter is used to hot melt the material in the barrels and print it on the surface of the uncooled PVC cable pipe through the print heads to complete the processing operation. A support cover and a rotating motor are respectively provided on the top of the protective cover; 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; The mounting ring is provided with a mounting seat, which fixes the print head through the mounting seat, and the mounting seat is also provided with a material pump, which is used to pump material from the material barrel to the print head; A connecting pipe is provided at the end of the guide cylinder away from one end of the PVC cable tube extruder. 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. The other end of the air jet is connected to the air injection port. A molding method for a molding device for a PVC cable tube includes the following steps: Step 1: Install the barrel, extractor, print head, and electromagnetic fuser onto the mounting ring of the PVC cable tube reinforcement processing device according to the density of the metal mesh or reinforcement material required for the PVC cable tube. 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: Feed the PVC cable tube into the PVC cable tube reinforcement processing device. When passing between the two sets of guide cylinders, the rotary motor is started to drive the two sets of guide cylinders to rotate synchronously in opposite directions. The material extraction machine and electromagnetic heat fuser are started simultaneously to continuously heat-fuse the metal mesh or reinforcement material and then print it into a mesh through the 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 air jet port to complete the processing operation.

2. A PVC cable tube forming and processing device according to claim 1, characterized in that: The inner bearing of the support cover is connected to a first rotating rod, which is driven by a rotating motor belt. The upper bearing of the end of the U-shaped bracket facing 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 that mesh with each other.

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

4. A PVC cable tube forming and processing device according to 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 rings.

5. The PVC cable tube forming device according to 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.

Images