CN114362056B - Plastic pipeline on-line cable laying device and process - Google Patents
Plastic pipeline on-line cable laying device and process Download PDFInfo
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- CN114362056B CN114362056B CN202111541103.5A CN202111541103A CN114362056B CN 114362056 B CN114362056 B CN 114362056B CN 202111541103 A CN202111541103 A CN 202111541103A CN 114362056 B CN114362056 B CN 114362056B
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- 229920003023 plastic Polymers 0.000 title claims abstract description 27
- 239000004033 plastic Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000012943 hotmelt Substances 0.000 claims abstract description 245
- 238000005520 cutting process Methods 0.000 claims abstract description 66
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 46
- 238000003825 pressing Methods 0.000 claims description 35
- 238000004804 winding Methods 0.000 claims description 24
- 230000000903 blocking effect Effects 0.000 claims description 17
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 8
- 230000008093 supporting effect Effects 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000001133 acceleration Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
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- Lining Or Joining Of Plastics Or The Like (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The application discloses a device and a process for laying cables on line of a plastic pipeline, wherein the device comprises a pipeline, an unpowered carrier roller assembly, a powered carrier roller assembly, a tractor, a pipeline cutting machine, a cable laying assembly, a cable cutting device, a hot melt strip laying assembly and a hot melt strip cutting device which are sequentially arranged along the direction from upstream to downstream; the tractor is used for driving the pipeline to move downstream, the pipeline cutting machine cuts off the pipeline by a fixed length, the top of the pipeline is provided with a groove, the cable laying assembly buries the cable into the bottom of the groove along the axial direction on line at the upstream, the hot melt strip laying assembly lays the hot melt strip into the opening at the upper part of the groove along the axial direction on line at the downstream, and the hot melt strip fully buries and extrudes the cable into the groove to form a whole with the pipeline. The device and the process for laying the cable on line of the plastic pipeline can lay the cable in the pipeline wall on line, can be suitable for laying and sealing the cable on line of pipelines with different specifications, and can lead the cable to exceed the end face of the pipeline so as to be convenient for wiring.
Description
Technical Field
The application belongs to the field of plastic pipe processing, and particularly relates to a device and a process for laying cables on line for plastic pipes.
Background
Some plastic pipes are required to be longitudinally grooved on the outer surface, and are provided with cables, thermocouple wires and the like for laying transmission communication along with a pipeline, monitoring the temperature of the pipeline and the like, and after the grooves are formed, the cables are required to be placed in the grooves and fixed. Because the pipeline needs to be buried, contacted with corrosive media or used outdoors, the cable is usually required to be integrated with the pipeline after being reliably sealed for a long time in order to fix the cable and prevent the cable from being corroded and short-circuited for a long time. Compared with the cable laying mode, the cable is independently arranged outside the pipeline, so that the cable laying method is higher in installation efficiency, wider in application scene and better in cable protection. In order to improve efficiency, pipeline grooving and cable laying are usually processed on line, and in order to meet the requirement of cable end connection, the cable needs to exceed the end face of the pipe by a distance. The prior patent CN203809883U discloses a buried polyethylene pipe with a trace wire, which comprises a trace wire and a covering and sealing mode, but does not provide an on-line production solution, including a method that a cable exceeds the end face of the pipe, and the cable outer layer is easily melted by hot-melt covering. The remaining patents also do not provide the above-described cabling functionality.
Disclosure of Invention
Aiming at the technical problems existing in the prior art, the application aims to provide a device and a process for laying cables on line for plastic pipelines. The process for laying the cable in the pipeline wall on line provided by the application can be suitable for laying and sealing the cable on line for pipelines with different specifications, and the cable is enabled to extend out of the end face of the pipeline so as to be convenient for wiring.
The technical scheme adopted by the application is as follows:
the on-line cable laying device for the plastic pipeline is characterized by comprising a pipeline, an unpowered carrier roller assembly, a powered carrier roller assembly, a tractor, a pipeline cutting machine, a cable laying assembly, a cable cutting device, a hot melt strip laying assembly and a hot melt strip cutting device, wherein the tractor, the pipeline cutting machine, the cable laying assembly, the cable cutting device, the hot melt strip laying assembly and the hot melt strip cutting device are sequentially arranged along the direction from upstream to downstream;
the traction machine is used for driving the pipeline to move downstream, the pipeline is cut off by the pipeline cutting machine in a fixed length way, the top of the pipeline is provided with a groove, the cable laying assembly is used for burying the cable in the bottom of the groove in an axial and online way at the upstream, the hot melt strip laying assembly is used for laying the hot melt strip in the upper opening of the groove in the axial and online way at the downstream, and the hot melt strip is used for completely burying and extruding the cable in the groove to form a whole with the pipeline;
the cable cutting device is provided with a cable length fixing or position detecting function, and cuts the cable between two pipelines after a cable with a set length is laid on one pipeline or the cable is laid at the tail end position of the pipeline is detected; the hot melt strip cutting device is provided with a hot melt strip fixed length or position detection function and is used for cutting off redundant hot melt strips between two pipelines;
the unpowered carrier roller assembly is arranged between the downstream of the pipeline cutting machine and the upstream of the cable cutting device and is used for providing rolling support function for the pipeline and supporting the pipeline to advance; the power idler assembly is arranged at a position between the downstream of the cable cutting device and the upstream of the hot melt strip cutting device and used for driving the pipeline to move forwards.
Further, the groove at the top of the pipeline is divided into a lower groove and an upper groove from inside to outside, the lower groove is a square groove, the bottom surface of the square groove is a plane or an arc surface, and the depth of the square groove is smaller than the diameter of the cable; the upper groove is divided into two sections of gradually-expanded trapezoid flaring grooves from inside to outside, the joint of the first section of trapezoid flaring groove and the lower groove is an annular flat step, two side inclined planes of the first section of trapezoid flaring groove are used for being welded with a hot melt strip in a contact mode, and the second section of trapezoid flaring groove is used for receiving hot melt strip raw materials overflowed from the side surfaces during hot melt.
Further, the whole hot-melt strip is in an inverted isosceles trapezoid structure, the top surface of the hot-melt strip is an arc with the same circular curvature as the outer surface of the pipeline, the thickness of the hot-melt strip is the same as the depth of the groove above, and the distance between the inclined planes at two sides of the hot-melt strip is slightly larger than the distance between the inclined planes at two sides of the trapezoid flaring slot at the first section so as to ensure that the hot-melt strip and the hot-melt strip are tightly attached to each other; the bottom surface of the hot melt strip is a plane, chamfers are arranged on two sides of the lower end of the hot melt strip, and a reserved space between the chamfers of the lower end of the hot melt strip and the inner wall of the first section of trapezoid flaring slot is used for receiving hot melt strip materials overflowed from the side surface during hot melt.
Further, the hot melt strip laying assembly comprises a hot melt strip winding drum, a hot melt plate, a hot melt strip pressing roller and two tensioning drums, wherein the hot melt strip winding drum is wound with the hot melt strip, and the hot melt strip axially passes through the interiors of the two tensioning drums after unreeling and is pressed into a groove at the top of the pipeline by the hot melt strip pressing roller; the hot melt plate sets up in the middle of two tensioning cylinders, and the hot melt plate has upper portion and both ends all to set up open-ended trapezoidal hot melt groove, can heat the hot melt strip when this trapezoidal hot melt groove's both sides face and hot melt strip side laminating, and the hot melt plate slope is arranged, two tensioning cylinders can be with the hot melt strip between them along the direction slant of perpendicular to hot melt plate upwards or slant down remove, make the hot melt strip compress tightly or break away from in the trapezoidal hot melt groove of hot melt plate to provide certain tensioning force and prevent the hot melt strip sag.
Further, the cable laying assembly comprises a cable winding drum, a tensioning roller and a cable pressing roller, wherein a cable is wound on the cable winding drum, and the cable is pressed into a groove at the top of the pipeline by the cable pressing roller after being unreeled; the tensioning roller is arranged between the cable winding drum and the cable compression roller and is used for compressing cables, and the roller surface of the tensioning roller adopts a V-shaped structure so as to have an automatic centering function and prevent the cables from running out of the width range of the roller surface.
Further, the roller surface of the cable compression roller is of a step shape and comprises a middle large roller surface and a small roller surface arranged at the outer side edge of the large roller surface, and the outer small roller surface can extend into a groove at the top of the pipeline to compress the cable; a plurality of groups of blocking rod assemblies are further arranged at intervals along the direction from the upstream to the downstream, each group of blocking rod assemblies comprises a pair of rotary blocking rods arranged on two sides of the pipeline, the rotary blocking rods are in fit contact with the side parts of the pipeline, and the rotary blocking rods can be driven to rotate when the pipeline advances.
The device also comprises a disqualification marking device, after automatic marking is started, when the cable laying assembly or the hot melt strip laying assembly does not work normally and the pipeline is still advancing normally, namely, the cable or the hot melt strip is not laid normally, the outer surface of the pipeline is sprayed with a color line to make disqualification marks, and signals are transmitted to be used for alarming and downstream reject disqualification devices.
Further, the unpowered carrier roller assembly comprises at least one unpowered roller, the powered carrier roller assembly comprises at least 2 powered rollers, each powered roller is driven by a motor to rotate, the rotating speeds of the powered rollers are consistent all the time and can be set to be adjusted, each powered roller is arranged at the downstream of the unpowered roller, and the first powered roller is arranged at the downstream of the cable pressing roller. The power roller and the unpowered roller are both in V-shaped structures so as to prevent the pipeline from rotating on the roller surfaces of the power roller or the unpowered roller.
The process for laying the cable on line by using the plastic pipeline is characterized by comprising the following steps of:
1) After the pipeline with the groove formed at the top is produced on line according to the conventional process, the pipeline advances downstream under the driving action of the tractor, the pipeline is cut off by the pipeline cutting machine in a fixed length, the cut pipeline is pushed by the upstream pipeline to advance, and at the moment, the unpowered roller provides a rolling supporting effect for the pipeline, so that the pipeline is supported to advance conveniently;
2) In the process of conveying the pipeline from upstream to downstream, the cable laying assembly firstly embeds the cable in the groove bottom of the pipeline along the axial direction on line, when the front end of the pipeline moves onto the power roller, the power roller drives the pipeline to keep constant speed and continuously advance, then the hot melt strip laying assembly lays the hot melt strip in the upper opening of the groove of the pipeline along the axial direction on line, and the hot melt strip fully embeds and extrudes the cable in the groove to form a whole with the pipeline;
3) Opening an unqualified marking assembly to automatically mark, and starting to automatically monitor and mark;
4) After the cable is laid at the tail end cutting part of the pipeline through the cable press roller, the power roller drives the cut pipeline to be pulled away from the upstream pipeline by a certain distance in an accelerating way, so that the wiring speed of the cable is accelerated, the speed of the cut pipeline is driven to be restored to be synchronous with the traction speed of the upstream pipeline, and then the cable between the two pipelines is automatically cut when the cut pipeline reaches the cable cutting device;
5) After the cable is cut, the power roller drives the cut pipeline to slow down until the gap between the cut pipeline and the upstream pipeline is shortened to a set distance, so that the hot melt strip compression roller of the hot melt strip laying assembly can cross the gap to reach the upstream pipeline, and then drives the speed of the cut pipeline to recover to be synchronous with the traction speed of the upstream pipeline;
6) After the gap disconnection position between the two pipelines reaches the hot melt strip cutting device, the end parts of the two pipelines respectively cut off the residual hot melt strips, so that the cables extend out of the end surfaces of the pipelines to be connected; at this time, the tail end cutting part of the upstream pipeline in the two pipelines does not pass through the cable press roller, the pipeline keeps normal traction speed, namely the traction speed is the same as that of the tractor, and when the tail end cutting part of the pipeline passes through the cable press roller 8, the pipeline is pulled and accelerated, so that the operation returns to the step 4), and the automatic cycle is started;
7) When the cable is used up and the cable reel needs to be replaced, the unqualified marking device always starts the mark until the following actions are completed: after lifting the tensioning roller and replacing the cable winding drum, the cable is unreeled and then pressed into the bottom of the groove of the pipeline by the cable pressing roller again, and the tensioning roller is pressed down to tension the cable. When the hot melt strip is used up and needs to exchange the hot melt strip winding drum, the unqualified marking device always starts the mark until the following actions are completed: lifting the tensioning cylinder, replacing the hot melt strip winding drum, unreeling the hot melt strip, penetrating through the tensioning cylinder and the hot melt plate, pressing the hot melt strip into an opening at the upper part of a groove of the pipeline again by the hot melt strip pressing roller, and pressing the tensioning cylinder to heat two sides of the hot melt strip by the hot melt plate.
The beneficial effects obtained by the application are as follows:
1) The device and the process for laying the cable on line of the plastic pipeline can lay the cable in the pipeline wall on line, can be suitable for laying and sealing the cable on line of pipelines with different specifications, and can lead the cable to exceed the end face of the pipeline so as to be convenient for wiring.
2) The whole hot melt strip is in an inverted isosceles trapezoid structure, the bottom surface is a plane, the top surface is an arc surface, the hot melt strip is a special-shaped strip, and the hot melt strip can be manufactured by conventional extrusion through a special-shaped strip extruder, and is simple and easy to obtain;
3) In the application, the groove is formed at the top of the pipeline, and the inventor specially designs the groove structure at the top of the pipeline and divides the groove structure into a lower groove and an upper groove from inside to outside. The depth of the lower groove is slightly smaller than the diameter of the cable, and when the hot melt strip is laid in the later stage, the cable is slightly compressed and deformed, so that the cable is tightly pressed and fixed in the lower groove to prevent the cable from loosening and shifting. The upper groove is divided into two sections of gradually-expanded trapezoid flaring grooves from inside to outside, two side inclined planes of the first section of trapezoid flaring groove are used for being welded with a hot melt strip in a contact mode, in addition, the junction of the first section of trapezoid flaring groove and the lower groove is an annular flat step, when the later-stage hot melt strip is pressed into the upper groove, the bottom surface of the melt strip press is tightly contacted with the table surface of the annular flat step, and hot melt high-temperature materials overflowed from the side surfaces of the hot melt strip in a compression mode are difficult to enter the lower groove, so that a cable and the hot melt high-temperature materials can be separated, and the cable is fully protected.
Drawings
FIG. 1 is a diagram showing the operational state of a plastic pipeline on-line cabling apparatus when an upstream pipeline is just cut off in an embodiment of the present application;
FIG. 2 is a diagram showing the operation of the cable laying device of the plastic pipeline when the end cutting part of the pipeline passes through the cable pressing roller just before passing through the cable pressing roller in the embodiment of the application;
FIG. 3 is a diagram showing the operation of the cable laying device of the plastic pipeline when the cable is cut in the embodiment of the application;
FIG. 4 is a diagram showing the operation of the plastic pipeline on-line cabling apparatus with downstream pipeline deceleration in accordance with an embodiment of the present application;
FIG. 5 is a diagram showing the operation of the plastic pipe on-line cabling system when the gap between two pipes is broken and reaches the hot melt strip cutting device in the embodiment of the present application;
FIG. 6 is a schematic view of the structure of a hot melt bar as it is heated in a melt plate;
FIG. 7 is a schematic view of a cable roll pressing a cable into the bottom of a groove of a duct;
FIG. 8 is a schematic view of a hot melt strip roll pressing a hot melt strip into the upper portion of a groove of a pipe;
FIG. 9 is a schematic diagram of the structure of a cable and a hot melt strip laid in a groove of a pipe;
FIG. 10 is a schematic view of a cable roll pressing a cable into the bottom of a groove of a duct when the roll surface of the unpowered roll is of a V-shaped configuration;
FIG. 11 is a schematic view showing a structure in which a hot melt strip is pressed into the upper portion of a groove of a pipe by a hot melt strip pressing roller when the roller surface of the power roller has a V-shaped structure.
Detailed Description
The application will be further illustrated with reference to specific examples, but the scope of the application is not limited thereto.
Examples: reference is made to FIGS. 1-11
A plastic pipeline on-line cable laying device comprises a pipeline 1, an unpowered carrier roller assembly, a powered carrier roller assembly, a tractor, a pipeline cutting machine, a cable laying assembly, a cable cutting device, a hot melt strip laying assembly, a disqualified marking device 13 and a hot melt strip cutting device, wherein the tractor, the pipeline cutting machine, the cable laying assembly, the cable cutting device, the hot melt strip cutting device are sequentially arranged along the direction from upstream to downstream.
In contrast to the present application, fig. 1 and 5 are schematic diagrams showing the positions of the pipe cutter 3, the tractor 2 and the hot melt bar cutting device 15, respectively.
The tractor is used for driving the pipeline 1 to move downstream, the pipeline cutting machine cuts off the pipeline 1 at a fixed length, the top of the pipeline 1 is provided with a groove, the cable laying assembly buries the cable 17 into the bottom of the groove along the axial direction on line at the upstream, the hot melt strip laying assembly lays the hot melt strip 16 into the opening at the upper part of the groove along the axial direction on line at the downstream, and the hot melt strip 16 fully buries and extrudes the cable 17 into the groove to form a whole with the pipeline 1. The unpowered carrier roller assembly is arranged between the downstream of the pipeline cutting machine and the upstream of the cable cutting device and is used for providing rolling support function for the pipeline and supporting the pipeline to advance; the power idler assembly is arranged at a position between the downstream of the cable cutting device and the upstream of the hot melt strip cutting device and used for driving the pipeline to move forwards.
The groove at the top of the pipeline 1 is divided into a lower groove and an upper groove from inside to outside, the lower groove is a square groove, the bottom surface of the square groove is a plane or an arc surface, and the depth of the square groove is smaller than the diameter of a cable, so that the cable can be pressed by the roller. The upper groove is divided into two sections of gradually-expanded trapezoid flaring grooves from inside to outside, inclined planes on two sides of the first section of trapezoid flaring groove are used for being in contact welding with the hot melt strip, the junction of the first section of trapezoid flaring groove and the lower groove is an annular flat step, when the table top of the annular flat step is used for welding, the hot melt strip is limited to continuously sink, so that the upper surface of the hot melt strip is not flush with the outer surface of a pipeline, and the cable is prevented from being stressed too much and being in contact with hot melt high-temperature materials. The second trapezoid flaring slot (i.e. the outermost flaring of the groove at the top of the pipeline 1) is used for receiving hot melt strip raw materials overflowed from the side surface during hot melting, and prevents the materials from melting the cable skin and overflowing the outer surface of the pipeline.
In contrast to fig. 7 and fig. 9, the whole hot-melt strip 16 has an inverted isosceles trapezoid structure, the top surface of the hot-melt strip 16 is an arc with the same curvature as the outer surface of the pipeline 1, the thickness of the hot-melt strip 16 is the same as the depth of the upper groove, and the distance between the inclined surfaces at two sides of the hot-melt strip 16 is slightly larger than the distance between the inclined surfaces at two sides of the trapezoid flaring slot at the first section so as to ensure that the two surfaces are tightly attached during hot-melt; the bottom surface of the hot melt strip 16 is a plane, both sides of the lower end of the hot melt strip 16 are respectively provided with a chamfer 16a (in contrast fig. 6), and a reserved space between the chamfer of the lower end of the hot melt strip 16 and the inner wall of the first section of trapezoid flaring slot is used for receiving hot melt strip materials overflowed from the side surface during hot melt, namely, the reserved space with the chamfer at the lower end of the hot melt strip 16 is used for receiving materials overflowed from the side surface during hot melt.
As can be seen in fig. 9, the cable diameter is slightly larger than the depth of the groove below the pipe 1, and the cable can be slightly compressed when the hot melt strip 16 is press-fitted and fixed in the groove above the pipe 1.
The hot melt strip of the hot melt strip laying assembly can be in an online extrusion or winding drum unreeling mode, the hot melt strip material is the same as the pipeline or good in welding property with the pipeline material, and the hot melt strip winding drum (containing the hot melt strip) is preferably used as a supply mode. In the application, the hot melt strip laying assembly comprises a hot melt strip winding drum 9, a hot melt plate 11, a hot melt strip pressing roller 12 and two tensioning drums 10, wherein a hot melt strip 16 is wound on the hot melt strip winding drum 9, and the hot melt strip 16 axially passes through the interiors of the two tensioning drums 10 after being unreeled and is pressed into a groove at the top of the pipeline 1 by the hot melt strip pressing roller 12. The hot melt plate 11 sets up in the department in the middle of two tensioning cylinder 10, and hot melt plate 11 has upper portion and both ends all set up the trapezoidal hot melt groove of open-ended, can heat the hot melt strip when this trapezoidal hot melt groove's both sides face and hot melt strip side laminating, and hot melt plate 11 slope is arranged, two tensioning cylinder 10 can be with the hot melt strip 16 between them along the direction slant of perpendicular to hot melt plate 11 upwards or slant downwardly moving, makes hot melt strip 16 compress tightly or break away from the trapezoidal hot melt groove of hot melt plate 11 to provide certain tensioning force and prevent the hot melt strip sagging. Wherein, the fixed square shaft that is provided with in the middle of the hot melt strip reel 9, the hot melt strip reel 9 drives the square shaft rotation when unreeling hot melt strip 16, and rotation sensor is installed to the square shaft end, sensor monitoring rotational speed. The hot melt strip compression roller 12 is an unpowered roller, a square shaft is adopted as a roller shaft, the hot melt strip compression roller 12 can drive the square shaft to rotate, a rotation sensor is arranged at the tail end of the square shaft, and the rotation speed is monitored by the sensor.
The cable laying assembly comprises a cable drum 6, a tensioning roller 7 and a cable pressing roller 8, a cable 17 is wound on the cable drum 6, the cable drum adopts a structure similar to that of a hot melt strip drum, and a rotation sensor is arranged at the tail end of the square shaft to monitor the rotation speed. After unreeling, the cable 17 is pressed into a groove at the top of the pipeline 1 by a cable press roller 8; the tensioning roller 7 is arranged between the cable drum 6 and the cable press roller 8 and is used for compressing the cable 17, and the roller surface of the tensioning roller 7 adopts a V-shaped structure so as to have an automatic centering function and prevent the cable from running out of the roller surface width range. The cable compression roller 8 is an unpowered roller, the roller shaft adopts a square shaft, the cable compression roller 8 can drive the square shaft to rotate, and a rotation sensor is arranged at the tail end of the square shaft.
The roller surface of the cable compression roller 8 is stepped (in comparison with fig. 7), and comprises a middle large roller surface and a small roller surface arranged at the outer side edge of the large roller surface, wherein the small roller surface at the outer side can extend into a groove at the top of the pipeline 1 to compress the cable.
The unpowered roller assembly comprises at least one unpowered roller 5, wherein the unpowered roller 5 is only used for supporting a pipeline to advance, and is unpowered and arranged downstream of the pipeline cutting machine. The unpowered roller 5 can be adjusted and maintained up and down, is suitable for production of pipelines with different specifications on a production line, and the roller surface of the unpowered roller is preferably of a V-shaped structure (compare with fig. 10) so as to prevent the pipeline from rotating to influence the cable laying.
The power idler assembly comprises at least 2 power rollers 4, each power roller 4 is driven by a motor to rotate, the rotating speeds of the power rollers 4 are consistent all the time and can be set and adjusted, the power idler assembly is arranged at the downstream of the unpowered roller, and the first power roller is arranged at the downstream of the cable press roller. The power roller 4 can be adjusted and maintained up and down, and is suitable for the production of pipelines with different specifications on a production line. The roll surfaces of the power rolls 4 are each of a V-shaped configuration (see fig. 11) to prevent the pipe from rotating on the roll surfaces of the power rolls 4.
In the device structure, a plurality of groups of blocking rod assemblies are further arranged at intervals along the direction from the upstream to the downstream, each group of blocking rod assemblies comprises a pair of rotary blocking rods 14 arranged on two sides of a pipeline, the rotary blocking rods 14 are in contact with the side parts of the pipeline in a fitting manner, and the rotary blocking rods 14 can be driven to rotate when the pipeline advances.
In the application, the cable cutting device is arranged at a position between the cable pressing roller 8 of the cable laying assembly and the hot melt strip pressing roller 12 of the hot melt strip laying assembly, and has a cable fixed length or position detection function, such as grating detection, when a cable with a set length is laid on a section of pipeline or the cable is laid at the tail end position of the pipeline, the cable in the middle of the two pipelines is cut.
The unqualified marking device 13 is arranged behind the hot melt strip press roll 12, is connected with the tractor speed measuring device, the cable winding drum square shaft and the rotation sensor on the hot melt strip winding drum square shaft by signals, and comprises an operation mode of manually closing the marking and opening the automatic marking. After automatic marking is started, when a square shaft does not rotate and the pipeline is still advancing normally, namely, a cable or a hot melt strip is considered to be laid normally, a color line is sprayed on the outer surface of the pipeline to serve as a disqualified mark, and a signal is transmitted to be used for alarming and a downstream disqualified product removing device. The situation is used when the winding drum is just started, the cable and the hot melt strip are used up and replaced in the middle, and when the winding drum is blocked and can not be normally unreeled during laying, and at the moment, the cable or the hot melt strip winding drum can be considered to be abnormally laid as the pipeline is not stopped from advancing during online production.
The hot melt strip cutting device is arranged behind the unqualified marking device 13 and is provided with a hot melt strip fixed length or position detection function and is used for cutting off redundant hot melt strips between two pipelines.
A process for laying cables on line by using a plastic pipeline, which comprises the following steps:
1) After the pipe 1 with the groove formed at the top is produced on line according to the conventional process, the height of the unpowered roller is adjusted so that the upper roller surface of the unpowered roller can be in contact with the bottom surface of the pipe. The power roller is started and the rotating speed is regulated, so that the speed of driving the pipeline to advance is the same as the speed of driving the pipeline to advance by the tractor, and the height of the power roller is regulated, so that the upper roller surface of the power roller can be contacted with the bottom surface of the pipeline. The rolling blocking rods on two sides of the pipeline are adjusted, so that the rolling blocking rods clamp the pipeline and rotate along with the pipeline.
2) The cable is manually buried in the bottom of the channel groove and pressed over the cable with the cable press roller. The hot melt strip is manually passed through a tensioning cylinder and a hot melt plate, the hot melt plate is heated, the hot melt strip is placed above a cable in a pipeline groove, a hot melt strip pressing roller is used for pressing the hot melt strip above the hot melt strip, and the tensioning cylinder moves downwards to press the hot melt strip on the hot melt plate. And as the side surface of the hot melt strip is softened, the hot melt strip and the groove of the pipeline are welded into a whole, and the cable is pressed.
3) When the cable is normally laid on line, the pipeline 1 advances downstream under the driving action of the tractor, the pipeline 1 is cut off by the pipeline cutting machine at a fixed length (in comparison with the state that the upstream pipeline is just cut off in FIG. 1), the cut pipeline is pushed by the upstream pipeline to advance, and at the moment, the unpowered roller 5 provides a rolling supporting action for the pipeline to support the pipeline so as to facilitate the pipeline to advance; in the process of conveying the pipeline from upstream to downstream, the cable laying assembly firstly embeds the cable 17 into the bottom of the groove of the pipeline 1 on line in the axial direction at the upstream, when the front end of the pipeline moves onto the power roller 4, the power roller 4 drives the pipeline to keep advancing continuously at a constant speed, then the hot melt strip laying assembly lays the hot melt strip 16 into the upper opening of the groove of the pipeline 1 on line in the axial direction, and the hot melt strip 16 fully embeds and extrudes the cable 17 into the groove to form a whole with the pipeline 1;
4) Opening an unqualified marking assembly to automatically mark, and starting to automatically monitor and mark;
5) When the tail end cutting part of the pipeline passes through the cable press roller 8 and cables are laid (the tail end cutting part of the pipeline just passes through the cable press roller 8 in comparison with fig. 2, the downstream pipeline is accelerated in advance), the power roller 4 drives the cut pipeline to be pulled away from the upstream pipeline in an accelerating way, so that the cable wiring speed is accelerated, then the speed of the cut pipeline is driven to be recovered to be synchronous with the traction speed of the upstream pipeline, and then the cable in the middle of the two pipelines is automatically cut when the cut pipeline reaches a cable cutting device (the state when the cut pipeline is cut in comparison with fig. 3, and at the moment, the two pipelines at the upstream and the downstream keep constant speed);
6) After cutting the cable, the power roller 4 drives the cut pipeline to slow down until the gap between the cut pipeline and the upstream pipeline is shortened to a set distance (compared with the speed reduction of the downstream pipeline in fig. 4, the distance between the upstream pipeline and the downstream pipeline is reduced to a certain gap), so that the hot melt strip compression roller 12 of the hot melt strip laying assembly can pass through the gap to reach the upstream pipeline, and then drives the speed of the cut pipeline to be recovered to be synchronous with the traction speed of the upstream pipeline;
7) In contrast to fig. 5, after the gap break between the two pipes reaches the hot melt strip cutting device, the ends of the two pipes are respectively cut off the hot melt strip, so that the cable extends beyond the end face of the pipe for connection. Referring to fig. 5, in the two pipes, the end cutting point of the upstream pipe does not pass through the cable press roller 8, the pipe is kept at the normal traction speed (that is, the traction speed is the same as that of the traction machine), and when the end cutting point of the pipe passes through the cable press roller 8, the pipe is pulled and accelerated, so that the operation returns to the step 5, and the automatic cycle is started.
8) When the cable is used up and the cable reel 6 needs to be replaced, the unqualified marking device always starts the mark until the following actions are completed: after the tensioning roller 7 is lifted and the cable drum 6 is replaced, the cable 17 is unreeled and then is pressed into the bottom of the groove of the pipeline 1 by the cable press roller 8, and the tensioning roller is pressed down to tension the cable 17. When the hot melt strip is used up and needs to exchange the hot melt strip winding drum 9, the unqualified marking device always starts the mark until the following actions are completed: lifting the tensioning cylinder, replacing the hot melt strip winding drum 9, unreeling the hot melt strip 16, passing through the tensioning cylinder 10 and the hot melt plate 11, and pressing the hot melt strip into the upper opening of the groove of the pipeline 1 by the hot melt strip pressing roller 12 again, and then pressing down the tensioning cylinder to heat the two sides of the hot melt strip by the hot melt plate 11.
What has been described in this specification is merely an enumeration of possible forms of implementation for the inventive concept and may not be considered limiting of the scope of the present application to the specific forms set forth in the examples.
Claims (10)
1. The device for laying the cable on line of the plastic pipeline is characterized by comprising a pipeline (1), an unpowered carrier roller assembly, a powered carrier roller assembly, and a tractor, a pipeline cutting machine, a cable laying assembly, a cable cutting device, a hot melt strip laying assembly and a hot melt strip cutting device which are sequentially arranged along the direction from upstream to downstream;
the tractor is used for driving the pipeline (1) to move downwards, the pipeline cutting machine cuts the pipeline (1) to a fixed length, a groove is formed in the top of the pipeline (1), the cable laying assembly embeds the cable (17) in the bottom of the groove along the axial direction at the upstream, the hot melt strip laying assembly lays the hot melt strip (16) in the upper opening of the groove along the axial direction at the downstream, and the hot melt strip (16) fully embeds and extrudes the cable (17) in the groove to form a whole with the pipeline (1);
the cable cutting device is provided with a cable length fixing or position detecting function, and cuts the cable between two pipelines after a cable with a set length is laid on one pipeline or the cable is laid at the tail end position of the pipeline is detected; the hot melt strip cutting device is provided with a hot melt strip fixed length or position detection function and is used for cutting off redundant hot melt strips between two pipelines;
the unpowered carrier roller assembly is arranged between the downstream of the pipeline cutting machine and the upstream of the cable cutting device and is used for providing rolling support function for the pipeline and supporting the pipeline to advance; the power idler assembly is arranged between the downstream of the cable cutting device and the upstream of the hot melt strip cutting device and is used for driving the pipeline to move forwards;
the hot melt strip laying assembly comprises a hot melt strip winding drum (9), a hot melt plate (11), a hot melt strip pressing roller (12) and two tensioning drums (10), wherein a hot melt strip (16) is wound on the hot melt strip winding drum (9), and the hot melt strip (16) axially passes through the interiors of the two tensioning drums (10) after being unreeled and is pressed into a groove at the top of the pipeline (1) by the hot melt strip pressing roller (12); the hot melt plate (11) is arranged in the middle of the two tensioning cylinders (10), and the hot melt plate (11) can heat the hot melt strip.
2. A plastic pipeline on-line cabling device as claimed in claim 1, characterized in that the groove at the top of the pipeline (1) is divided into a lower groove and an upper groove from inside to outside, the lower groove is a square groove, the bottom surface of the square groove is a plane or an arc surface, and the depth of the square groove is smaller than the diameter of the cable; the upper groove is divided into two sections of gradually-expanded trapezoid flaring grooves from inside to outside, the joint of the first section of trapezoid flaring groove and the lower groove is an annular flat step, two side inclined planes of the first section of trapezoid flaring groove are used for being welded with a hot melt strip in a contact mode, and the second section of trapezoid flaring groove is used for receiving hot melt strip raw materials overflowed from the side surfaces during hot melt.
3. The plastic pipeline on-line cable laying device according to claim 2, wherein the whole hot-melt strip (16) is in an inverted isosceles trapezoid structure, the top surface of the hot-melt strip (16) is an arc with the same circular curvature as the outer surface of the pipeline (1), the thickness of the hot-melt strip (16) is the same as the depth of the upper groove, and the distance between the inclined surfaces at two sides of the hot-melt strip (16) is slightly larger than the distance between the inclined surfaces at two sides of the trapezoid flaring groove at the first section so as to ensure that the hot-melt strip and the hot-melt strip are tightly attached to each other; the bottom surface of the hot melt strip (16) is a plane, both sides of the lower end of the hot melt strip (16) are respectively provided with a chamfer, and a reserved space between the chamfer of the lower end of the hot melt strip (16) and the inner wall of the first section of trapezoid flaring slot is used for receiving hot melt strip materials overflowed from the side surface during hot melt.
4. A plastic pipeline on-line cabling device as claimed in claim 1, characterized in that the hot melt plate (11) is provided with a trapezoid hot melt groove with openings at the upper part and at both ends, the hot melt strip can be heated when the two sides of the trapezoid hot melt groove are attached to the sides of the hot melt strip, the hot melt plate (11) is obliquely arranged, the two tensioning drums (10) can move the hot melt strip (16) between the two tensioning drums obliquely upwards or downwards along the direction perpendicular to the hot melt plate (11), so that the hot melt strip (16) is pressed or separated from the trapezoid hot melt groove of the hot melt plate (11), and a certain tensioning force is provided to prevent the hot melt strip from hanging down.
5. A plastic pipeline on-line cabling arrangement as claimed in claim 1, characterized in that the cabling assembly comprises a cable drum (6), a tension roller (7) and a cable press roller (8), the cable drum (6) is wound with a cable (17), and the cable (17) is pressed into a groove at the top of the pipeline (1) by the cable press roller (8) after unreeling; the tensioning roller (7) is arranged between the cable winding drum (6) and the cable compression roller (8) and is used for compressing the cable (17), and the roller surface of the tensioning roller (7) adopts a V-shaped structure so as to have an automatic centering function and prevent the cable from escaping from the roller surface width range.
6. The plastic pipeline on-line cable laying device according to claim 5, wherein the roller surface of the cable pressing roller (8) is stepped and comprises a middle large roller surface and a small roller surface arranged at the outer side edge of the large roller surface, and the outer small roller surface can extend into a groove at the top of the pipeline (1) to press the cable; a plurality of groups of blocking rod assemblies are further arranged at intervals along the direction from the upstream to the downstream, each group of blocking rod assemblies comprises a pair of rotary blocking rods (14) arranged on two sides of the pipeline, the rotary blocking rods (14) are in contact with the side parts of the pipeline in a fitting way, and the rotary blocking rods (14) can be driven to rotate when the pipeline advances;
the unpowered carrier roller assembly comprises at least one unpowered roller (5), the powered carrier roller assembly comprises at least 2 powered rollers (4), each powered roller (4) is driven by a motor to rotate, the rotating speeds of the powered rollers are consistent all the time and can be set to be adjusted, each powered roller is arranged at the downstream of the unpowered roller, and the first powered roller is arranged at the downstream of the cable pressing roller; the roller surfaces of the power roller (4) and the unpowered roller (5) are of V-shaped structures so as to prevent the pipeline from rotating on the roller surfaces of the power roller (4) or the unpowered roller (5).
7. The on-line cabling system of claim 1, further comprising a reject marking means for applying a color line to the outer surface of the conduit for reject marking and transmitting a signal to the alarm and downstream reject removal means when no normal operation of the cabling assembly or the hot melt strip cabling assembly occurs and the conduit is still traveling normally, i.e., when no normal cabling or hot melt strip is considered.
8. The process for laying the cable on line by using the plastic pipeline is characterized by comprising the following steps of:
1) After the pipeline (1) with the groove formed at the top is produced on line according to the conventional process, the pipeline (1) advances downstream under the driving action of a tractor, the pipeline (1) is cut off by a pipeline cutting machine in a fixed length, the cut pipeline is pushed by an upstream pipeline to advance, and at the moment, the unpowered roller (5) provides a rolling supporting effect for the pipeline to support the pipeline so as to facilitate the pipeline to advance;
2) In the process of conveying the pipeline from upstream to downstream, a cable laying assembly firstly embeds a cable (17) in the bottom of a groove of the pipeline (1) in an axial direction, when the front end of the pipeline moves onto a power roller (4), the power roller (4) drives the pipeline to keep advancing continuously at a constant speed, then a hot melt strip laying assembly lays a hot melt strip (16) in the upper opening of the groove of the pipeline (1) in the axial direction in a linear manner, and the hot melt strip (16) fully embeds and extrudes the cable (17) in the groove to form a whole with the pipeline (1);
3) Opening an unqualified marking assembly to automatically mark, and starting to automatically monitor and mark;
4) After a cable is laid at the tail end cutting position of the pipeline through a cable press roller (8), the power roller (4) drives the cut pipeline to be pulled and opened at a certain distance from the adjacent upstream pipeline by acceleration, so that the wiring speed of the cable is increased, the speed of the cut pipeline is driven to be restored to be synchronous with the traction speed of the upstream pipeline, and then the cable in the middle of the two pipelines is automatically cut when the cut pipeline reaches a cable cutting device;
5) After cutting the cable, the power roller (4) drives the cut pipeline to slow down until the gap between the cut pipeline and the adjacent upstream pipeline is shortened to a set distance, so that a hot melt strip compression roller (12) of the hot melt strip laying assembly can cross the gap to reach the upstream pipeline, and then drives the speed of the cut pipeline to be recovered to be synchronous with the traction speed of the upstream pipeline;
6) After the gap disconnection part between the two pipelines reaches the hot melt strip cutting device, the end parts of the two pipelines respectively cut off the residual hot melt strips, so that the cables extend out of the end surfaces of the pipelines to be connected.
9. A process for the on-line cabling of plastic pipes as claimed in claim 8, characterized in that, when the strip of excess heat is sheared off in step 6), the end cut of the upstream pipe of the two pipes is not passed by the cable roller, the pipe is maintained at a normal drawing speed, i.e. the drawing speed is the same as that of the drawing machine, and the pipe is drawn up after the end cut of the pipe has passed by the cable roller 8, thereby returning to the action of step 4), and the automatic cycle is started.
10. A process for in-line cabling of plastic tubing as claimed in claim 8, further comprising the steps of: when the cable is used up and the cable reel (6) needs to be replaced, the unqualified marking device always starts the mark until the following actions are completed: after lifting the tensioning roller (7) and replacing the cable reel (6), unreeling the cable (17), pressing the cable into the bottom of the groove of the pipeline (1) by the cable pressing roller (8) again, and pressing the tensioning roller to tension the cable (17);
when the hot melt strip is used up and needs to be replaced by the hot melt strip winding drum (9), the unqualified marking device always starts the mark until the following actions are completed: lifting the tensioning cylinder, replacing the hot melt strip winding drum (9), unreeling the hot melt strip (16), penetrating through the tensioning cylinder (10) and the hot melt plate (11), and pressing the hot melt strip into an opening at the upper part of a groove of the pipeline (1) by the hot melt strip pressing roller (12), and then pressing down the tensioning cylinder to heat two sides of the hot melt strip by the hot melt plate (11).
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| CN202111541103.5A CN114362056B (en) | 2021-12-16 | 2021-12-16 | Plastic pipeline on-line cable laying device and process |
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| CN202111541103.5A CN114362056B (en) | 2021-12-16 | 2021-12-16 | Plastic pipeline on-line cable laying device and process |
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| CN114362056A (en) | 2022-04-15 |
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