Production equipment and production method of plastic steel winding pipe

Abstract

The present application relates to the technical field of winding pipe processing, and particularly relates to a plastic-steel winding pipe production equipment and a production method. The technical scheme is as follows: comprising a winding forming device, a steel belt guiding device and a plastic belt extruding device, the plastic belt extruding device is used for extruding a sheet plastic belt, the winding forming device is used for moving the sheet plastic belt in a spiral track and winding the sheet plastic belt in a partially overlapped manner to form a pipeline, and the steel belt guiding device is used for inserting a steel belt into the overlapped sheet plastic belt. The beneficial effects are as follows: the sheet plastic belt is wound in a partially overlapped manner, and the steel belt is directly inserted into the overlapped sheet plastic belt during the winding process, so that the plastic-steel winding pipe does not need a long production line to process the plastic belt with the steel belt in the middle, and does not need to be wound and fixed after being heated and softened for the second time, the production process of the plastic-steel winding pipe can be greatly simplified, the production efficiency is improved, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of winding pipe processing, in particular to a plastic-steel winding pipe production equipment and a production method. BACKGROUND

[0002] The plastic-steel winding pipe is a kind of drainage pipe for urban drainage system. Initially, the pipe is formed by winding the sheet plastic material after being softened by heating. Although the plastic material is wear-resistant and has strong corrosion resistance, its mechanical performance is poor, and its strength and deformation resistance are low. If the performance requirements of the drainage pipe are to be met, the thickness of the pipe needs to be increased, which will inevitably increase the weight and production cost of the pipe. Therefore, after improvement, a pipe formed by winding the steel belt inserted in the middle of the plastic material is produced, which is called plastic-steel winding pipe. The current plastic-steel winding pipe is formed by extruding two plastic belts and inserting a steel belt in the middle at the same time, and then cooling to form a plastic belt with a steel belt in the middle. Then the plastic belt with the steel belt is heated to soften it, and then wound by a winding forming device. The current processing method not only needs a long production line to extrude, cool and shape the plastic belt with the steel belt in the middle, but also needs to be heated again to soften it before winding at the winding forming device. It not only needs a large processing space, but also the processing process is complicated and the processing cost is high. SUMMARY

[0003] The present application aims to provide a plastic-steel winding pipe production equipment and a production method, in particular to provide a production equipment and a production method for winding the sheet plastic belt in a partially overlapping manner and directly inserting the steel belt into the overlapping sheet plastic belt during winding, to realize the rapid and efficient production of plastic-steel winding pipe.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a plastic-steel winding pipe production equipment, comprising a winding forming device, a steel belt guiding device and a plastic belt extruding device, the discharge port of the plastic belt extruding device is arranged above the winding forming device, the plastic belt extruding device is used to extrude sheet plastic belt, the winding forming device is used to move the sheet plastic belt extruded by the plastic belt extruding device in a spiral trajectory and wind it in a partially overlapping manner to form a pipe, and the steel belt guiding device is used to insert the steel belt into the overlapping sheet plastic belt.

[0005] Specifically, the steel belt guiding device comprises a steel belt coiling mechanism and a steel belt guiding mechanism, the steel belt coiling mechanism is arranged below the winding forming device, and the steel belt guiding mechanism is in a spiral shape and is arranged outside the winding forming device, and the end of the steel belt guiding mechanism is located below the discharge port of the plastic belt extruding device.

[0006] Further, the steel belt molding device is arranged below the winding forming device and connected with the steel belt coiling mechanism of the steel belt guiding device; the steel belt molding device comprises an upper molding roller and a lower molding roller.

[0007] Specifically, the discharge port of the plastic belt extruding device is two-step shaped, and the sheet plastic belt extruded by the plastic belt extruding device is also two-step shaped.

[0008] Specifically, the winding forming device is provided with a spraying cooling device on both sides, and the spraying cooling device is composed of a plurality of universal spraying pipes.

[0009] Specifically, the winding forming device is further provided with a pipe shaping roller on both sides, and the pipe shaping roller comprises a mounting bracket and a shaping roller rotatably connected with the mounting bracket, and the shaping roller is in abutting contact with the outer surface of the pipe on the winding forming device.

[0010] Specifically, the winding forming device is provided with a pipe receiving device at the end, and the pipe receiving device is composed of a support frame and a receiving roller arranged on the support frame, and the receiving roller is at least two and symmetrically arranged relative to the pipe extending from the end of the winding forming device, and the receiving roller is below the pipe extending from the end of the winding forming device and is in supporting connection with the outer surface of the pipe.

[0011] A production method of plastic-steel winding pipe, which utilizes a plastic belt extruding device to extrude a sheet plastic belt on a winding forming device, and drives the sheet plastic belt to move on the surface of the winding forming device in a spiral track, so that the sheet plastic belt is wound in a partially overlapped manner to form a pipe, and a coiled and shaped steel belt is inserted into the overlapped sheet plastic belt during the winding process, and finally a plastic-steel winding pipe with a steel belt in the middle is formed; wherein the width of the overlapped part of the sheet plastic belt is greater than the width of the steel belt.

[0012] Specifically, when the steel belt is inserted into the overlapped sheet plastic belt, the steel belt first covers the rear end of the sheet plastic belt wound on the winding forming device in the previous turn, and then the front end of the newly extruded sheet plastic belt covers the steel belt and overlaps with the rear end of the sheet plastic belt in the previous turn, so that the steel belt is inserted into the overlapped sheet plastic belt to form a plastic-steel winding pipe.

[0013] Specifically, the cross section of the sheet plastic belt is two-step shaped, and the sheet plastic belt comprises an outer layer part, an inner layer part and a connecting part, and when the sheet plastic belt is wound on the winding forming device, the outer layer part is located at the front end and the inner layer part is located at the rear end, and the outer layer part of the newly extruded sheet plastic belt overlaps with the inner layer part of the sheet plastic belt wound in the previous turn.

[0014] Specifically, after the plastic-steel winding pipe with a steel belt in the middle is finally formed, the plastic-steel winding pipe is cooled and shaped by spraying cooling.

[0015] The beneficial effect of the present application is that by winding the sheet-shaped plastic belt in a partially overlapping manner and directly inserting the steel belt into the overlapping sheet-shaped plastic belt during the winding process, the plastic-steel winding pipe does not need a long production line to process the plastic belt with the steel belt in between, nor does it need to be heated and softened again for winding and setting, which can greatly simplify the production process of the plastic-steel winding pipe, improve production efficiency and reduce production cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the production equipment for the plastic-steel winding pipe in the embodiment. Figure 1 Figure 2 is a schematic diagram of the overall structure of the production equipment for the plastic-steel winding pipe in the embodiment with the spray cooling device hidden.

[0017] Figure 3 is a schematic diagram of the overall structure of the production equipment for the plastic-steel winding pipe in the embodiment from another angle. Figure 2 Figure 4 is a schematic diagram of the overall structure of the production equipment for the plastic-steel winding pipe in the embodiment with the spray cooling device hidden. Figure 1 Figure 5 is a schematic diagram of the overall structure of the production equipment for the plastic-steel winding pipe in the embodiment with the spray cooling device hidden.

[0018] Figure 6 is a schematic diagram of the overall structure of the production equipment for the plastic-steel winding pipe in the embodiment with the spray cooling device hidden. Figure 3 Figure 7 is a schematic diagram of the specific structure at the winding and forming device in the embodiment.

[0019] Figure 4 Figure 8 is a schematic diagram of the connection between the sheet-shaped plastic belt and the steel belt during the winding process in the embodiment.

[0020] Figure 9 is a schematic diagram of the connection between the sheet-shaped plastic belt and the steel belt during the winding process in the embodiment. Figure 5 Figure 10 is a cross-sectional view of the plastic-steel winding pipe after processing and forming in the embodiment.

[0021] Figure 6 Figure 11 is a cross-sectional view of the plastic-steel winding pipe after processing and forming in the embodiment. EMBODIMENT

[0022] Embodiment 1, with reference to Figures 1-6 A production equipment for a plastic-steel winding pipe, comprising a winding and forming device 1, a steel belt guiding device 2 and a plastic belt extruding device 3, the discharge port of the plastic belt extruding device 3 is arranged above the winding and forming device 1, the plastic belt extruding device 3 is used to extrude a sheet-shaped plastic belt 4, the winding and forming device 3 is used to move the sheet-shaped plastic belt 4 extruded by the plastic belt extruding device 3 in a spiral trajectory and wind it in a partially overlapping manner to form a pipe, and the steel belt guiding device 2 is used to insert a steel belt 5 into the middle of the overlapping sheet-shaped plastic belt 4.

[0023] ​​In the embodiment, the winding forming device 1 is a device commonly used in the art for winding forming plastic tapes, which is composed of a plurality of driving rollers arranged in an equidistant circumferential array with a certain inclination angle. Among the plurality of driving rollers, there are driving rollers and driven rollers. The driving rollers are driven to rotate by a chain and sprocket, and are mainly used to drive the sheet plastic tape 4 to move in a spiral trajectory. The driven rollers can rotate freely and are mainly used to support the sheet plastic tape 4 to make the sheet plastic tape wind to form a pipe. The winding forming device 1 is a technology commonly used in the art, and only the main structure thereof is shown in the drawing. The specific driving device is not shown in the drawing. The plastic tape extrusion device 3 is used to extrude the sheet plastic tape 4. The sheet plastic tape 4 is extruded from the discharge port and falls on the winding forming device 1, which is driven to move in a spiral trajectory. The plastic tape extrusion device 3 only shows the extrusion die at the end thereof in the drawing. The top end of the extrusion die is used to connect with the extrusion equipment to realize the extrusion of the sheet plastic tape 4. The sheet plastic tape 4 is wound in a partially overlapping manner on the winding forming device 1. The width of the sheet plastic tape 4 is larger than that of the plastic tape processed by the conventional method. During the winding process of the sheet plastic tape 4 in a partially overlapping manner, the steel tape guide device 2 inserts the steel tape 5 into the overlapping sheet plastic tape 4. The specific process of winding is as follows. The winding forming device 1 first drives the sheet plastic tape 4 to rotate one circle in a spiral trajectory, then the steel tape 5 covers the rear end of the sheet plastic tape 4 wound on the winding forming device 1 in the previous circle, and then the front end of the newly extruded sheet plastic tape 4 covers the steel tape 5 and partially overlaps with the rear end of the sheet plastic tape 4 in the previous circle, so as to realize the insertion of the steel tape 5 into the overlapping sheet plastic tape 4 to form a plastic-steel winding pipe.

[0024] Specifically, the discharge port of the plastic tape extrusion device 3 is in a two-step ladder shape, and the cross section of the sheet plastic tape 4 extruded by the plastic tape extrusion device 3 also has a two-step ladder shape corresponding to the shape of the discharge port. The cross section of the sheet plastic tape 4 is in a two-step ladder shape, and the sheet plastic tape 4 includes an outer layer portion 41, an inner layer portion 42 and a connecting portion 43. When the sheet plastic tape 4 is wound on the winding forming device 1, the outer layer portion 41 is located at the front end, the inner layer portion 42 is located at the rear end, and the outer layer portion 41 of the newly extruded sheet plastic tape 4 overlaps with the inner layer portion 42 of the sheet plastic tape 4 wound in the previous circle. The two-step ladder-shaped cross section of the sheet plastic tape 4 makes the inner layer portion 42 able to fit with the outer surface of the winding forming device 1 when the outer layer portion 41 fits with the steel tape 5 during the winding process, which is convenient for pipe forming.

[0025] In addition, the winding forming device 1 is provided with a spraying cooling device 6 on both sides, which is composed of a plurality of universal spraying pipes 61. The winding forming device 1 is also provided with a pipe shaping roller 7, which includes a mounting bracket 71 and a shaping roller 72 rotationally connected with the mounting bracket 71, and the shaping roller 72 is in abutting contact with the outer surface of the pipe on the winding forming device 1. The spraying cooling device 6 can spray cooling liquid to the sheet-shaped plastic belt 4 in the winding process, so as to accelerate the cooling and shaping of the sheet-shaped plastic belt 4. The universal spraying pipe 61 can be arbitrarily bent to align with the pipe on the winding forming device 1. The pipe shaping roller 7 limits and shapes the shape of the pipe by abutting contact with the outer surface of the pipe, so as to avoid the situation that the outer surface of the pipe formed by winding is protruding.

[0026] In a further embodiment, the winding forming device 1 is provided with a pipe receiving device 8 at the end, which is composed of a support frame 81 and a receiving roller 82 arranged on the support frame 81. The receiving roller 82 is at least two and symmetrically arranged relative to the pipe extending from the end of the winding forming device 1. The receiving roller 82 is located below the pipe extending from the end of the winding forming device 1 and is in supporting connection with the outer surface of the pipe. Since the length of the plastic steel winding pipe is relatively long, the pipe formed by winding through the winding forming device 1 can be supported by the pipe receiving device 8 after being pushed out of the winding forming device 1, so as to avoid excessive pressure on the winding forming device 1 and also avoid the problem of deformation of the newly formed pipe.

[0027] Specifically, the above-mentioned steel belt guiding device 2 includes a steel belt coiling mechanism 21 and a steel belt guiding mechanism 22. The steel belt coiling mechanism 21 is arranged below the winding forming device 1, and the steel belt guiding mechanism 22 is in a spiral shape and is arranged outside the winding forming device 1. The end of the steel belt guiding mechanism 22 is located below the discharge port of the plastic belt extruding device 3. The steel belt coiling mechanism 21 is composed of a plurality of coiling rollers, which can coil the straight steel belt 5, so as to facilitate the insertion of the steel belt 5 into the overlapped sheet-shaped plastic belt 4. In addition, the steel belt guiding mechanism 22 is in a spiral shape and is arranged outside the winding forming device. The steel belt guiding mechanism 22 can limit the coiled steel belt 5 and make the steel belt 5 move forward in a spiral trajectory and be inserted into the sheet-shaped plastic belt 4 in the winding process.

[0028] Further, the steel band moulding device 9 is arranged below the winding forming device 1 and connected with the steel band winding mechanism 21 of the steel band guiding device 2, and the steel band moulding device 9 comprises an upper moulding roller 91 and a lower moulding roller 92. The steel band moulding device 9 is used to mould the steel band with a flat cross section into a steel band with a wave cross section, so that the steel band can provide greater support for the final formed plastic-steel winding pipe when inserted into the plastic strip, and the strength of the plastic-steel winding pipe is improved. The upper moulding roller 91 and the lower moulding roller 92 of the steel band moulding device 9 can be multiple groups to improve the moulding effect of the steel band, wherein the lower moulding roller 92 can be a driven roller rotating freely, and the upper moulding roller 91 is driven to rotate by a rotating driving mechanism, and the moulding forming of the steel band 5 is realized by the cooperation of the rotating upper moulding roller 91 and the lower moulding roller 92.

[0029] The embodiment also provides a production method of the plastic-steel winding pipe. The plastic strip extruding device 3 is used to extrude the plastic strip 4 on the winding forming device 1, the winding forming device 1 drives the plastic strip 4 to move on the surface thereof in a spiral track, so that the plastic strip 4 is wound to form a pipe in a partially overlapped manner, the steel band 5 wound into a circle is inserted into the overlapped plastic strip 4 during the winding process, and finally a plastic-steel winding pipe with the steel band in the middle is formed. The width of the overlapped part of the plastic strip 4 is greater than the width of the steel band 5.

[0030] Specifically, when the steel band 5 is inserted into the overlapped plastic strip 4, the steel band covers the rear end of the plastic strip 4 wound on the winding forming device 1 in the previous turn, and then the front end of the newly extruded plastic strip 4 covers the steel band 5 and overlaps with the rear end of the plastic strip 4 in the previous turn, so that the steel band 5 is inserted into the overlapped plastic strip 4 to form the plastic-steel winding pipe.

[0031] Specifically, the cross section of the plastic strip 4 is in a two-step ladder shape, the plastic strip 4 comprises an outer layer part 41, an inner layer part 42 and a connecting part 43, when the plastic strip 4 is wound on the winding forming device 1, the outer layer part 41 is located at the front end, the inner layer part 42 is located at the rear end, and the outer layer part 41 of the newly extruded plastic strip 4 overlaps with the inner layer part 42 of the plastic strip 4 wound in the previous turn.

[0032] Of course, the above is only a preferred embodiment of the present application, and does not limit the use range of the present application, so any equivalent changes made on the principle of the present application shall be included in the protection scope of the present application.

Claims

1. A production equipment for plastic-coated steel spiral wound pipes, characterized in that: The device includes a winding forming apparatus, a steel strip guiding apparatus, and a plastic strip extrusion apparatus. The outlet of the plastic strip extrusion apparatus is located above the winding forming apparatus. The plastic strip extrusion apparatus is used to extrude sheet-like plastic strips. The winding forming apparatus is used to move the sheet-like plastic strips extruded by the plastic strip extrusion apparatus along a spiral trajectory and to wind them in a partially overlapping manner to form a pipe. The steel strip guiding apparatus is used to insert a steel strip into the middle of the overlapping sheet-like plastic strips. The steel strip guiding apparatus includes a steel strip winding mechanism and a steel strip guiding mechanism. The steel strip winding mechanism is located below the winding forming apparatus. The steel strip guide mechanism is spiral-shaped and wound around the outside of the winding forming device. The end of the steel strip guide mechanism is located below the discharge port of the plastic strip extrusion device. The discharge port of the plastic strip extrusion device is in a two-stage stepped shape. The sheet plastic strip extruded by the plastic strip extrusion device corresponds to the shape of the discharge port and is also in a two-stage stepped shape. The sheet plastic strip includes an outer layer, an inner layer and a connecting part. When the sheet plastic strip is wound on the winding forming device, the outer layer is located at the front end and the inner layer is located at the rear end. The outer layer of the newly extruded sheet plastic strip overlaps with the inner layer of the sheet plastic strip wound in the previous turn.

2. The production equipment for plastic-coated steel spiral pipe according to claim 1, characterized in that: It also includes a steel strip molding device, which is located below the winding forming device and connected to the steel strip rolling mechanism of the steel strip guiding device; the steel strip molding device includes an upper molding roller and a lower molding roller.

3. The production equipment for plastic-coated steel spiral pipe according to claim 1, characterized in that: The winding forming device is equipped with a spray cooling device on both sides, which consists of multiple universal spray pipes.

4. The production equipment for plastic-coated steel spiral pipe according to claim 3, characterized in that: The winding forming device is also provided with pipe shaping rollers on both sides. The pipe shaping rollers include mounting brackets and shaping rollers rotatably connected to the mounting brackets. The shaping rollers abut against the outer surface of the pipe on the winding forming device.

5. The production equipment for plastic-coated steel spiral pipe according to claim 1, characterized in that: The end of the winding forming device is provided with a pipe receiving device, which consists of a support frame and receiving rollers set on the support frame. There are at least two receiving rollers, which are symmetrically arranged with respect to the pipe extending from the end of the winding forming device. The receiving rollers are located below the pipe extending from the end of the winding forming device and are supported and connected to the outer surface of the pipe.

6. A method for producing a plastic-coated steel spiral wound pipe, characterized in that: The process is carried out using the production equipment for plastic-steel spiral wound pipes as described in any one of claims 1-5: a sheet plastic strip is extruded onto a winding forming device using a plastic strip extrusion device, and the winding forming device drives the sheet plastic strip to move in a spiral trajectory on its surface, so that the sheet plastic strip is wound in a partially overlapping manner to form a pipe. During the winding process, a rolled steel strip is inserted into the middle of the overlapping sheet plastic strips, ultimately forming a plastic-steel spiral wound pipe with a steel strip in the middle; wherein, the width of the overlapping part of the sheet plastic strip is greater than the width of the steel strip; when the steel strip is inserted into the middle of the overlapping sheet plastic strips, the steel strip first covers the rear end of the previous turn of the sheet plastic strip wound on the winding forming device, and then the front end of the newly extruded sheet plastic strip covers the steel strip and partially overlaps with the rear end of the previous turn of the sheet plastic strip, so that the steel strip is inserted into the middle of the overlapping sheet plastic strips to form a plastic-steel spiral wound pipe.

7. The method for producing a plastic-coated steel spiral wound pipe according to claim 6, characterized in that: The cross-section of the sheet-like plastic strip is in the shape of a two-stage step. The sheet-like plastic strip includes an outer layer, an inner layer, and a connecting part. When the sheet-like plastic strip is wound on the winding forming device, the outer layer is located at the front end and the inner layer is located at the rear end. The outer layer of the newly extruded sheet-like plastic strip overlaps with the inner layer of the sheet-like plastic strip wound in the previous turn.

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