CN114261120B - Manufacturing method and equipment for socket-and-spigot type winding structure wall pipe - Google Patents
Manufacturing method and equipment for socket-and-spigot type winding structure wall pipe Download PDFInfo
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- CN114261120B CN114261120B CN202111355652.3A CN202111355652A CN114261120B CN 114261120 B CN114261120 B CN 114261120B CN 202111355652 A CN202111355652 A CN 202111355652A CN 114261120 B CN114261120 B CN 114261120B
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- 238000004804 winding Methods 0.000 title claims abstract description 71
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 41
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 142
- 239000010959 steel Substances 0.000 claims abstract description 142
- 239000000463 material Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000001746 injection moulding Methods 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 9
- 238000002844 melting Methods 0.000 claims abstract description 5
- 230000008018 melting Effects 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 68
- 230000006698 induction Effects 0.000 claims description 37
- 230000007246 mechanism Effects 0.000 claims description 35
- 238000001125 extrusion Methods 0.000 claims description 19
- 238000003825 pressing Methods 0.000 claims description 17
- 230000005855 radiation Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
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- 239000004033 plastic Substances 0.000 description 10
- 229920003023 plastic Polymers 0.000 description 10
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
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- 238000006467 substitution reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
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- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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- Injection Moulding Of Plastics Or The Like (AREA)
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Abstract
The invention relates to the technical field of socket type winding structure wall pipes, and discloses a manufacturing method of a socket type winding structure wall pipe, which comprises the steps of firstly manufacturing a socket pipe fitting through injection molding, and extending one end of the manufactured socket pipe fitting to form a lap joint section; sleeving the bell and spigot pipe fitting on a steel mould, and carrying out hot melting on the lap joint section; finally, the steel mould is rotated, and in the rotation process of the steel mould, the winding machine moves from the lap joint section along the direction away from the bell and spigot pipe fitting, and meanwhile, the material extruded by the winding machine is coated on the steel mould to form a pipe body, so that the cost can be reduced, the product size is stable, the precision is high, and the production efficiency is high. The invention also provides manufacturing equipment of the socket type winding structure wall pipe, which is used for realizing the method and is convenient to use.
Description
Technical Field
The invention relates to the technical field of socket type winding structure wall pipes, in particular to a manufacturing method and equipment of a socket type winding structure wall pipe.
Background
The hollow winding structure wall pipe is a structure wall pipe made of High Density Polyethylene (HDPE) as raw material and adopting a thermal state winding forming process, and is suitable for municipal drainage, outdoor drainage of buildings, buried farmland drainage, industrial sewage discharge, road drainage, sewage treatment plants, playground square engineering drainage, electric telecommunication engineering and the like with water delivery temperature below 45 ℃. The hollow winding structure wall pipe is a novel acid-resistant, corrosion-resistant, compression-resistant and nontoxic green environment-friendly pipe, belongs to an environment-friendly and energy-saving high-technology product, and has important significance in saving energy, reducing pollution and protecting environment.
In long distance transportation, a plurality of pipes are required to be connected in sequence, and socket connection is currently performed with other pipes by arranging socket pipe fittings at the ends of the pipes. The existing manufacturing method of the socket-type winding structure wall pipe comprises three methods: (1) Firstly, manufacturing a bell and spigot pipe fitting, and then connecting the bell and spigot pipe fitting and the pipe together in a butt-joint manner through end face welding, wherein the manner is generally applied to the connection of water supply pipelines, the pipe is required to have enough thickness, the end face is flat and has good roundness, the connection of the pipe with thinner wall thickness is not applicable, and the conditions of connection dislocation and insufficient strength can easily occur when the pipe is used in a barely way; (2) Firstly, processing a pipe, trimming and leveling end surfaces, and then placing the pipe into an injection molding machine for injection molding bell and spigot for cooling molding, wherein the mode has higher requirements on the inner diameter and the outer diameter of the pipe, the glue leakage condition is easy to occur after the pipe exceeds the tolerance, and the problem that the pipe cannot be molded easily occurs when the injection molding pressure is insufficient; (3) The pipe fitting is cut and processed after the pipe fitting is integrally formed, but the socket expands with heat and contracts with cold, so that the precision fluctuation after processing is large; because the wall thickness of the solid wall faucet can not be infinitely increased, the interface is difficult to be matched with an inspection well product, and the thickening can increase the cost, if an adapter mode is adopted, the construction cost can be increased, and the risk of connection leakage can be increased.
Chinese patent application CN102233673a (publication date: 2011, 11, 09) discloses a process for manufacturing a plastic winding structure wall socket pipe, which comprises cutting a plastic winding structure wall pipe into a length of 6000mm according to a size; placing the plastic winding structure wall pipe on a pipe support, pushing an opened opening and closing die with the length of 200mm for connecting the plastic winding structure wall pipe into the pipe support to serve as a fusion end, closing the opening and closing die, pushing a movable die plate by an oil cylinder to enable a die core to enter the opening and closing die, closing the movable die plate and the opening and closing die, starting a heating device in the opening and closing die, and heating to 80 ℃ to heat the fusion end; meanwhile, PE materials for the extruder are melted at the constant temperature of 180 ℃, PE hot plastic is extruded into an opening and closing die by the extruder within 6 minutes to form a flaring head fused with a fusion end of a wall pipe of a plastic winding structure, after the extrusion process is finished, the opening and closing die is cooled by water for 10 minutes, the flaring head is cooled and shaped to form a wall socket pipe of the plastic winding structure, a movable template is separated from the opening and closing die under the action of an oil cylinder, a die core is pulled out, the opening and closing die is opened again, the wall socket pipe of the plastic winding structure is taken out, and after flash is removed, inspection and warehousing are performed. The method is that the end part of the pipe is hot melted and then injection molded to form the socket pipe fitting, firstly, the die of the socket pipe fitting is complex to manufacture, and if the pipe with various specifications is to be produced, the dies of the socket pipe fittings are required to be manufactured, and the replacement is troublesome; secondly, the end part of the pipe needs to be accurately connected with the die of the bell and spigot pipe fitting, so that the difficulty is high, errors are easy to occur, the position of the bell and spigot is deviated, and the like are unqualified, and the efficiency is low; in addition, the requirement on the inner diameter and the outer diameter of the pipe is high, the glue leakage is easy to occur after the pipe exceeds the tolerance, the problem that the pipe cannot be molded easily occurs when the injection pressure is insufficient, and the end part of the pipe needs to be trimmed and then the faucet pipe is injection molded.
Disclosure of Invention
The invention aims to provide a manufacturing method and equipment for a socket type winding structure wall pipe, which have stable product size, high precision and high production efficiency.
In order to achieve the above object, the present invention provides a method for manufacturing a wall pipe of a socket-and-spigot winding structure, comprising the steps of:
s1, manufacturing a socket pipe fitting through injection molding, and extending one end of the manufactured socket pipe fitting to form an overlap joint section;
s2, sleeving the bell and spigot pipe fitting on a steel die, and carrying out hot melting on the lap joint section;
s3, rotating the steel die, moving the winding machine from the lap joint section along the direction away from the bell and spigot pipe fitting in the rotating process of the steel die, and simultaneously, coating the steel die with the material extruded by the winding machine to form a pipe body.
Preferably, in step S2, the overlap is heated internally and externally.
Preferably, the steel die is heated up by induction heating to internally heat the overlap section and the outer surface of the overlap section is irradiated by radiation to externally heat the overlap section.
The invention also provides manufacturing equipment of the socket type winding structure wall pipe, which comprises a winding machine, a steel die, a heating device, a fixing device and a driving device, wherein the end part of the steel die is detachably arranged on the fixing device, the driving device is in transmission connection with the fixing device to drive the steel die to rotate, the winding machine is positioned on one side of the steel die and can move along the axial direction of the steel die, and the heating device is arranged close to the end part of the steel die.
Preferably, the heating device comprises an external heating mechanism, the external heating mechanism comprises an external heater and a first moving mechanism, and the external heater is rotatably connected to the first moving mechanism so as to drive the external heater to move along the direction approaching or separating from the steel mould.
Preferably, the first moving mechanism comprises a first bracket and a telescopic cylinder connected to the first bracket, the external heater is rotatably connected to the extending end of the telescopic cylinder, and the telescopic cylinder is obliquely arranged with the extending end upward.
As the preferred scheme, first moving mechanism still includes first gag lever post, be equipped with the mounting panel on the first support, be equipped with first mounting hole and second mounting hole on the mounting panel, flexible cylinder with the mounting panel is connected and its end of stretching out passes first mounting hole, first gag lever post wears to locate in the second mounting hole, just the one end of gag lever post with the end of stretching out of flexible cylinder is connected, the other end of gag lever post is equipped with the stopper.
Preferably, the heating device comprises an internal heating mechanism, the internal heating mechanism comprises an internal heater, and the internal heater is arranged below the steel die.
Preferably, the inner heater comprises an induction coil and an induction module, the induction coil is arranged above the induction module, and the induction coil is electrically connected with the induction module.
As the preferable scheme, the winding machine further comprises a pressing wheel capable of moving along the axial direction of the steel mould, the pressing wheel is positioned on one side of the steel mould, the pressing wheel can move along the direction perpendicular to the axial direction of the steel mould, the winding machine comprises a sheet material extruding device and a pipe material extruding device, and the sheet material extruding device, the pressing wheel and the pipe material extruding device are sequentially arranged along the axial direction of the steel mould.
Compared with the prior art, the invention has the beneficial effects that:
according to the method, the bell and spigot pipe fitting is manufactured through injection molding, then the bell and spigot pipe fitting is sleeved on the steel mould, the lap joint section of the extruded material and the bell and spigot pipe fitting is coated and extended to form the pipe body, after cooling, the bell and spigot pipe fitting is formed into the bell and spigot winding structure wall pipe, the bell and spigot pipe fitting is of an injection molding structure wall structure, the structure wall structure can be manufactured into different heights, the cost difference is small, bell and spigot pipe fittings of various structures can be manufactured, the bell and spigot pipe fitting and the pipe body are connected in a coating lap joint mode, the connection of thick and thin wall structure pipe fittings can be adapted at the same time, the integration of the pipe fitting and the pipe body is good, the product size is stable, the precision is high, in addition, the bell and spigot pipe fitting after injection molding only needs to be sleeved on the steel mould, the connection is convenient, the efficiency is high, and the end part of the pipe fitting does not need to be trimmed.
The manufacturing equipment provided by the invention can be used for sleeving the injection-molded socket pipe fitting by arranging the steel mould, and the lap joint section of the socket pipe fitting is fused with the material of the pipe body by the heating device to realize connection, and the fixing device for fixing the steel mould is driven to rotate by the driving device, so that the steel mould is driven to rotate, the heating device can conveniently perform circumferential heating on the lap joint section of the socket pipe fitting sleeved on the steel mould, and the winding machine positioned at one side of the steel mould can wind the pipe body only by moving, so that the pipe body is convenient to use.
Drawings
Fig. 1 is a flowchart of a method for manufacturing a wall pipe of a socket type winding structure according to a first embodiment of the present invention.
Fig. 2 is a schematic diagram of the positioning of the bell and spigot pipe on the steel die to wrap around the pipe body according to the first, second and third embodiments of the invention.
Fig. 3 is a schematic view of a first view of an apparatus for manufacturing a wall pipe of a socket type winding structure according to a third embodiment of the present invention.
Fig. 4 is a schematic view of a second view of an apparatus for manufacturing a wall pipe of a socket type winding structure according to a third embodiment of the present invention.
Fig. 5 is a schematic cross-sectional view of the end of a steel die according to a third embodiment of the invention.
In the drawings, 1-socket pipe fittings; 2-lap joint section; 3-steel mould; 301-connecting holes; 4, a pipe body; 5-driving wheels; 6-an external heater; 7-a first bracket; 8-a telescopic cylinder; 9-a first limiting rod; 10-mounting plates; 11-limiting blocks; 12-an induction coil; 13-a sensing module; 14-a second bracket; 15-lifting device; 16-a base; 17-a second limiting rod; 18-fixing plates; 19-a positioning head; 20-moving wheels; 21-a screw rod; 22-a screw rod sliding block; 23-a hand wheel; 24-pressing wheel; 25-a sheet extrusion device; 26-tubing extrusion device; 27-positioning columns.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
As shown in fig. 1, a method for manufacturing a wall pipe of a socket type winding structure according to a preferred embodiment of the present invention includes the steps of:
s1, manufacturing a socket pipe fitting 1 through injection molding, and extending one end of the manufactured socket pipe fitting 1 to form an overlap section 2;
s2, sleeving the bell and spigot pipe fitting 1 on the steel die 3, and carrying out hot melting on the lap joint section 2;
s3, rotating the steel die 3, moving the winding machine from the lap joint section 2 along the direction away from the bell and spigot pipe fitting 1 in the rotating process of the steel die 3, and simultaneously, coating the steel die 3 with the material extruded by the winding machine to form a pipe body 4. As shown in fig. 2.
In the embodiment, the socket pipe fitting 1 is manufactured through injection molding, then the socket pipe fitting 1 is sleeved on the steel die 3, the lap joint section 2 of the socket pipe fitting 1 is coated and extended to form the pipe body 4 through a winding machine, after cooling, a socket type winding structure wall pipe is formed, the socket pipe fitting 1 is of an injection molding structure wall structure, the structure wall structure can be manufactured into different heights, the cost difference is small, the socket pipe fitting 1 of various structures can be manufactured, the connection of the socket pipe fitting 1 and the pipe body 4 adopts a coating lap joint mode, the connection of thick thin wall structure pipe materials can be simultaneously adapted, the integration of the pipe fitting and the pipe body is good, the product size is stable, the precision is high, the interchangeability is good, in addition, the injection molded socket pipe fitting 1 only needs to be sleeved on the steel die 3, the connection is convenient, the efficiency is high, the end part of the pipe material is not needed to be trimmed, the flow is reduced, and the time and the cost are saved.
Example two
The difference between the embodiment and the first embodiment is that, in the first embodiment, in step S2, the overlap section 2 is heated internally and externally, so as to improve the heating efficiency, and the overlap section 2 is heated uniformly, and is fully fused with the material extruded by the winding machine, so that the structural strength of the joint of the pipe body 4 and the bell and spigot pipe fitting 1 is improved, the inner wall and the outer wall of the pipe are smooth, and the problem of deformation of a single heating pipe fitting is avoided. In this embodiment, the lap joint section 2 is first internally heated and then externally heated. In this example, the steel die 3 is heated by internal heating to a temperature of 50% of the temperature required for the pipe to be in a molten state, and then externally heated.
In this embodiment, the steel die 3 is raised in temperature by induction heating to internally heat the overlap section 2, and the outer surface of the overlap section 2 is irradiated with radiation to externally heat the overlap section 2. Through induction heating, can make steel mould 3 need not external, avoid hindering steel mould 3 rotation, and can be under the condition of not damaging bell and spigot pipe fitting 1, with the relative part heating of overlap joint section 2 of steel mould 3. Induction heating is a method of generating electric current in a heated metal material by electromagnetic induction, and achieves the heating purpose by means of the energy of eddy currents. The external heating of the lap joint section 2 is non-contact heating through radiation heating, so that materials extruded by a winding machine are conveniently coated on the lap joint section 2 and wound from the lap joint section 2 to form a pipe body 4. The present embodiment uses infrared radiation for heating and also achieves localized heating of the thin long overlap section 2 of the socket pipe 1 without overheating elsewhere in the socket pipe 1. In this embodiment, the lap joint section 2 is heated to a molten state and then subjected to cladding lap joint.
In addition, the end of the steel die 3 in this embodiment is of a variable diameter structure, that is, the end of the steel die 3 is folded before the socket pipe fitting 1 is sleeved, so that the diameter of the end of the steel die 3 is reduced, the socket pipe fitting 1 is easy to sleeve, after the socket pipe fitting 1 is positioned, the end of the steel die 3 is opened, and even if the diameter of the end of the steel die 3 is increased, the socket pipe fitting 1 is expanded on the steel die 3, so that the socket pipe fitting 1 is prevented from being shifted. In this embodiment, the plurality of positioning columns 27 are arranged at the end of the steel die 3, the positioning columns 27 are arranged along the radial direction of the steel die 3 and can move along the radial direction of the steel die 3, before the socket pipe fitting 1 is sleeved, the positioning columns 27 retract, after the socket pipe fitting 1 is sleeved on the steel die 3, the positioning columns 27 extend and are propped against the inner wall of the socket pipe fitting 1, so that tensioning positioning is realized.
It should be noted that the socket pipe fitting 1 according to the present embodiment is a pipe fitting with a pipe end for socket connection, and may be a socket or a spigot.
Other steps of this embodiment are the same as those of the first embodiment, and will not be described here again.
Example III
As shown in fig. 2 and 4, the manufacturing equipment of the socket-type winding structure wall pipe according to the preferred embodiment of the invention comprises a winding machine, a steel die 3, heating devices, fixing devices and driving devices, wherein the end parts of the steel die 3 are detachably arranged on the fixing devices, the driving devices are in transmission connection with the fixing devices to drive the steel die 3 to rotate, the winding machine is positioned on one side of the steel die 3 and can move along the axial direction of the steel die 3, the number of the heating devices is two, and the two heating devices are respectively arranged close to two ends of the steel die 3. The manufacturing equipment of this embodiment is through setting up steel mould 3, can be used to suit the bell and spigot pipe fitting 1 that moulds plastics, and make the overlap joint section 2 of bell and spigot pipe fitting 1 fuse with the material of pipe shaft 4 through heating device, realize the connection, and drive the fixing device of fixed steel mould 3 through drive arrangement and rotate, and then drive steel mould 3 and rotate, can make things convenient for heating device to carry out circumference heating to the overlap joint section of bell and spigot pipe fitting 1 of suit on steel mould 3, and make the coiler that is located steel mould 3 one side only need remove and can twine and produce pipe shaft 4, convenient to use, the manufacturing equipment of this embodiment can realize moulding plastics bell and spigot pipe fitting 1 earlier and twine on bell and spigot pipe fitting 1 again and extend and form pipe shaft 4. The manufacturing apparatus of the present embodiment further includes an injection molding machine and a socket pipe injection mold for injection molding of the socket pipe 1. Heating devices are arranged at two ends of the pipe fitting, and can respectively heat overlapping sections of the bell pipe fitting and the spigot pipe fitting of the pipe.
In this embodiment, the heating device includes external heating mechanism, external heating mechanism includes external heater 6 and first moving mechanism, external heater 6 rotationally connects on first moving mechanism in order to drive external heater 6 along being close to or keep away from the direction of steel mould 3 and remove, can carry out external heating to socket pipe fitting 1 of suit on steel mould 3, and be close to steel mould 3 when heating, leave steel mould 3 after heating is accomplished, avoid hindering the winding shaping of pipe shaft 4, and make things convenient for socket pipe fitting 1 to cup joint and the unloading after the tubular product shaping, and external heater 6 is rotatable, make the circular arc center of external heater 6 concentric with the center of steel mould 3, make the pipe fitting heat more evenly. . Specifically, the first moving mechanism comprises a first bracket 7 and a telescopic cylinder 8 connected to the first bracket 7, the external heater 6 is rotatably connected to the extending end of the telescopic cylinder 8, the telescopic cylinder 8 is obliquely arranged and the extending end of the telescopic cylinder faces upwards, the external heater 6 can be made to move obliquely upwards to be close to the steel die 3 and obliquely downwards to be far away from the steel die 3 through the telescopic cylinder 8, the socket pipe fitting 1 sleeved on the steel die 3 can be heated from the obliquely upper part or the obliquely lower part, and the external heater 6 can be rotated to perform angle adjustment. In addition, first moving mechanism still includes first gag lever post 9, be equipped with mounting panel 10 on the first support 7, be equipped with first mounting hole and second mounting hole on the mounting panel 10, telescopic cylinder 8 is connected with mounting panel 10 and its end of stretching out passes first mounting hole, first gag lever post 9 wears to locate in the second mounting hole, and the one end of gag lever post 9 is connected with telescopic cylinder 8's end of stretching out, telescopic cylinder 8's the other end is equipped with stopper 11, make telescopic cylinder 8 drive the maximum distance that outer heater 6 removed be the distance of first gag lever post 9 and telescopic cylinder 8's one end to stopper 11, prevent outer heater 6 contact to steel mould 3 on the bell and spigot pipe fitting 1 of suit. In addition, the external heater 6 of the present embodiment has an arc-shaped structure, which can increase the heating area and is beneficial to uniformly heating the socket pipe fitting 1. Alternatively, the external heater 6 is an infrared radiation heating device.
The heating device of this embodiment includes internal heating mechanism, and internal heating mechanism includes internal heater, and the below of steel mould 3 is located to internal heater. The part of the steel mould 3 opposite to the lap joint section 2 of the socket pipe fitting 1 can be heated by the inner heater, and the part of the steel mould 3 opposite to the lap joint section 2 of the socket pipe fitting 1 and the lap joint section 2 of the socket pipe fitting 1 can be heated to the required temperature by matching with the outer heater, so that the internal and external heating of the socket pipe fitting 1 is realized. The inner heater of this embodiment is an induction heating device, and the inner heater includes an induction coil 12 and an induction module 13, where the induction coil 12 is disposed above the induction module 13, and the induction coil 12 is electrically connected with the induction module 13. In addition, the internal heating mechanism further comprises a second moving mechanism, the induction module 13 is connected to the second moving mechanism to drive the induction module 13 to move along the direction close to or far away from the steel die 3, when the internal heating mechanism heats, the induction module 13 is close to the steel die 3, after the internal heating mechanism heats, the induction module 13 leaves the steel die 3, and winding forming of the pipe body 4, blanking after pipe forming and the like are prevented from being hindered. The induction module 13 of the embodiment has an arc structure, which can increase the heating area and is beneficial to uniform heating. The second moving mechanism of the present embodiment is disposed below the steel die 3. The second moving mechanism of the embodiment comprises a second bracket 14, a lifting device 15 and a base 16, wherein the lifting device 15 is arranged on the second bracket 14, the sensing module 13 is rotatably connected with the lifting device 15, and the lifting device 15 drives the sensing module 13 to move up and down so as to approach or separate from the steel die 3. The second moving mechanism further comprises a second limiting rod 17, a fixed plate 18 is arranged on the second support 14, the sensing module 13 is connected to the movable end of the lifting device 15, the fixed plate 18 is horizontally arranged, a through hole is formed in the fixed plate 18, the second limiting rod 17 penetrates through the through hole, one end of the second limiting rod 17 is connected with the movable end of the lifting device 15, the other end of the second limiting rod 17 is provided with a limiting head 19, the maximum moving distance of the sensing module 13 is the distance between one end, connected with the lifting device 15, of the second limiting rod 17 and the limiting head 19, and the sensing module 13 is prevented from contacting the socket pipe fitting 1 sleeved on the steel die 3. The second support 14 of the present embodiment is disposed on the base 16, and the base 16 is connected to a moving wheel 20, so that the base 16 is movable. In addition, the second moving mechanism further comprises a screw rod 21 and a screw rod sliding block 22, the screw rod 21 is rotatably connected to the base 16, the screw rod sliding block 22 is in threaded connection with the screw rod 21, the second bracket 14 is connected to the screw rod sliding block 22, a hand wheel 23 is arranged at one end of the screw rod 21, the screw rod 22 can be rotated through the hand wheel 23, and the position of the induction module 13 is adjusted so that the induction module 13 is opposite to the lap joint section 2 of the induction coil 12 and the socket pipe fitting 1.
In addition, the manufacturing equipment of the socket-type winding structure wall pipe of the embodiment further comprises a pressing wheel 24 capable of moving along the axial direction of the steel die 3, the pressing wheel 24 is located on one side of the steel die 3, the pressing wheel 24 can move along the direction perpendicular to the axial direction of the steel die, the winding machine comprises a plate extrusion device 25 and a pipe extrusion device 26, and the plate extrusion device 25, the pressing wheel 24 and the pipe extrusion device 26 are sequentially arranged along the axial direction of the steel die 3. After the plate extruded by the plate extruding device 25 is covered on the steel die 3, the pressing wheel 24 moves to be close to the steel die 3, the wheel surface of the pressing wheel 24 is contacted with the plate covered on the steel die 3 to be flattened, and then the pipe extruded by the pipe extruding device 26 is wound on the steel die 3. The manufacturing equipment of the socket-and-spigot winding structure wall pipe of the embodiment further comprises a pinch roller support, and the pinch roller 24 is rotatably connected to the pinch roller support. In addition, the manufacturing equipment of this implementation further includes the removal track that is parallel with the axial of steel mould 3 and extends along with the length direction of steel mould 3, and the removal track is located one side of steel mould 3, is equipped with the sliding seat that can follow its length direction on the removal track, and pinch roller 24, sheet extrusion device 25 and pipe extrusion device 26 are respectively connected on the sliding seat through a telescoping device, make pinch roller 24, sheet extrusion device 25 and pipe extrusion device 26 be close to or keep away from steel mould 3 through the telescoping device, and follow the axial movement of steel mould 3 through sliding seat and removal track. In addition, the fixing device of this embodiment includes four drive wheels 5, and the both ends of steel mould 3 respectively are equipped with two drive wheels 5, and two drive wheels 5 interval setting and the pivot that are located steel mould 3 one end are parallel, and two drive wheels 5 that are located steel mould 3 one end can be close to each other or keep away from, and drive arrangement is the motor, and the motor is connected with drive wheel 5 transmission in order to drive wheel 5 rotation, places steel mould 3 on drive wheel 5, and drive wheel 5 rotation can drive steel mould 3 rotation.
The steel die 3 of this embodiment is of a cylindrical structure and is steel. As shown in fig. 5, the end of the steel mold 3 is provided with a plurality of connection holes 301 provided along the circumferential direction thereof, the connection holes 301 are provided along the radial direction of the steel mold 3, and positioning posts 27 movable along the radial direction of the steel mold 3 are inserted into the connection holes 301. One end of the steel die 3 sleeved with the socket pipe fitting 1 of the embodiment is provided with a positioning column 27 capable of moving along the radial direction of the socket pipe fitting, and when the socket pipe fitting 1 is sleeved with the steel die 3, the positioning column 27 is retracted, so that the socket pipe fitting 1 is sleeved conveniently; after the socket pipe fitting 1 is sleeved into the steel mould 3, the positioning column 27 stretches out to prop against the inner wall of the socket pipe fitting 1, and the socket pipe fitting 1 is tightly supported, so that the socket pipe fitting 1 is positioned and prevented from moving. The movement of the positioning column 27 of the present embodiment is driven by a telescopic mechanism.
The distributed layout structure is adopted in the implementation, the plate extrusion device 25, the pipe extrusion device 26 and the heating device are ingeniously arranged on the pipe winding machine, and an operator only needs to control each mechanism to work in a coordinated mode according to the process requirements, so that needed pipes can be produced, and the pipe winding machine is convenient to use.
The working process of the embodiment is as follows: (1) The socket pipe fitting 1 is formed by injection molding through an injection molding machine and a socket pipe fitting injection mold.
(2) Position adjustment: according to the specification of the pipe body 4, the spacing between the driving wheels 5 is adjusted, the empty steel mould 3 is lifted into a winding table and supported on the four driving wheels 5. The external heater 6 is adjusted through the telescopic cylinder 8, so that the external heater 6 is concentric with the steel die 3, and the position of the limiting block 11 on the first limiting rod 9 is adjusted. The base 16 is moved to the lower side of the steel mould 3 by the moving wheel 20; the hand wheel 23 is rotated to enable the screw rod sliding block 22 to move along the screw rod 21, the induction module 13 is moved upwards through the lifting device 15, the induction module 13 is concentric with the steel mould 3, and the position of the limiting head 19 on the second limiting rod 17 is adjusted.
(3) After the position is adjusted, the steel mould 3 is lifted, the socket pipe fitting 1 is sleeved into the steel mould 3, and the socket pipe fitting 1 is positioned. The steel mould 3 is then placed over the drive wheel 5. The motor is started to rotate the driving wheel 5 and drive the steel mould 3 to rotate together. The lifting device 15 drives the induction module 13 to lift, heats the part of the steel mould 3 covered by the lap joint section 2 of the socket pipe fitting 1, and enables the inner wall of the lap joint section 2 of the socket pipe fitting 1 to be heated simultaneously through heat transfer of the steel mould 3, at the moment, the steel mould 3 is rotated and heated simultaneously, and the outer surface of the lap joint section 2 is heated uniformly.
(4) When the temperature of the part of the steel die 3 covered by the overlap section 2 is heated to about 50% of the required melting temperature, the telescopic cylinder 8 drives the external heater 6 to be close to the steel die 3, and the overlap section 2 of the socket pipe fitting 1 is externally heated. After the overlap section 2 is heated to a molten state, the induction module 13 is lowered by the lifting device 15, the external heater 6 is removed by the telescopic cylinder 8, and the heating is stopped.
(5) Starting a winding machine, extruding the sheet material from a sheet material extruding device 25, starting winding the sheet material at the lap joint section 2, and after winding for 1-2 circles, moving a pressing wheel 24 to contact the sheet material, and pressing the sheet material in a follow-up manner to enable the lap joint section 2 and the sheet material to be welded in a molten state. The tubing extrusion device 26 is turned on, extruding the coated tubing, and winding on the outside of the sheet. At this time, the plate material and the pipe material are simultaneously wound to form the pipe body 4.
In summary, the embodiment of the invention provides a manufacturing method of a socket type winding structure wall pipe, which is characterized in that a socket pipe fitting 1 is manufactured through injection molding, then the socket pipe fitting 1 is sleeved on a steel mould 3, a lap joint section 2 of an extrusion material of a winding machine and the socket pipe fitting 1 is coated and extended to form a pipe body 4, and after cooling, the socket type winding structure wall pipe is formed, so that the pipe production is facilitated, the pipe fitting can be uniformly allocated, the socket size is stable, and the interchangeability is good. The embodiment of the invention also provides manufacturing equipment for the socket-and-spigot winding structure wall pipe for realizing the method, by arranging the steel mould 3, the manufacturing equipment can be used for sleeving the injection-molded socket pipe fitting 1, and the driving device drives the fixing device for fixing the steel mould 3 to rotate, so that the heating device can conveniently perform circumferential heating on the lap joint section 2 of the socket pipe fitting 1 sleeved on the steel mould 3, and the winding machine positioned at one side of the steel mould 3 can wind the pipe body 4 only by moving, so that the manufacturing equipment is convenient to use.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (5)
1. The manufacturing equipment of the socket-type winding structure wall pipe is characterized by comprising a winding machine, a steel mould (3), heating devices, fixing devices and driving devices, wherein the end parts of the steel mould (3) are detachably arranged on the fixing devices, the driving devices are in transmission connection with the fixing devices to drive the steel mould (3) to rotate, the winding machine is positioned on one side of the steel mould (3) and can move along the axial direction of the steel mould (3), the number of the heating devices is two, and the two heating devices are respectively arranged close to two ends of the steel mould (3); the heating device comprises an internal heating mechanism, wherein the internal heating mechanism comprises an internal heater, and the internal heater is arranged below the steel die (3); the inner heater comprises an induction coil (12) and an induction module (13), wherein the induction coil (12) is arranged above the induction module (13), and the induction coil (12) is electrically connected with the induction module (13);
the heating device comprises an external heating mechanism, the external heating mechanism comprises an external heater (6) and a first moving mechanism, and the external heater (6) is rotatably connected to the first moving mechanism so as to drive the external heater (6) to move along the direction approaching or separating from the steel mould (3).
2. The manufacturing equipment of the socket and spigot winding structure wall pipe according to claim 1, wherein the first moving mechanism comprises a first bracket (7) and a telescopic cylinder (8) connected to the first bracket (7), the external heater (6) is rotatably connected to the extending end of the telescopic cylinder (8), and the telescopic cylinder (8) is obliquely arranged with the extending end facing upwards.
3. The manufacturing equipment of the socket-and-spigot winding structure wall pipe according to claim 2, wherein the first moving mechanism further comprises a first limiting rod (9), a mounting plate (10) is arranged on the first bracket (7), a first mounting hole and a second mounting hole are arranged on the mounting plate (10), the telescopic cylinder (8) is connected with the mounting plate (10) and the extending end of the telescopic cylinder penetrates through the first mounting hole, the first limiting rod (9) penetrates through the second mounting hole, one end of the limiting rod is connected with the extending end of the telescopic cylinder (8), and a limiting block (11) is arranged at the other end of the limiting rod.
4. The manufacturing equipment of the socket and spigot winding structure wall pipe according to claim 1, further comprising a pressing wheel capable of moving along the axial direction of the steel die (3), wherein the pressing wheel is located on one side of the steel die (3), the pressing wheel can move along the direction perpendicular to the axial direction of the steel die (3), the winding machine comprises a sheet extrusion device (25) and a pipe extrusion device (26), and the sheet extrusion device (25), the pressing wheel and the pipe extrusion device (26) are sequentially arranged along the axial direction of the steel die (3).
5. A method for manufacturing a tube based on the manufacturing apparatus of a wall tube of a socket and spigot winding structure according to claims 1-4, characterized by comprising the steps of:
s1, manufacturing a socket pipe fitting through injection molding, and extending one end of the manufactured socket pipe fitting to form an overlap joint section;
s2, sleeving the bell and spigot pipe fitting on a steel die, and carrying out hot melting on the lap joint section; heating the lap joint section internally and externally; raising the temperature of the steel die by induction heating to internally heat the overlap section, and irradiating the outer surface of the overlap section by radiation to externally heat the overlap section;
s3, rotating the steel die, moving the winding machine from the lap joint section along the direction away from the bell and spigot pipe fitting in the rotating process of the steel die, and simultaneously, coating the steel die with the material extruded by the winding machine to form a pipe body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111355652.3A CN114261120B (en) | 2021-11-16 | 2021-11-16 | Manufacturing method and equipment for socket-and-spigot type winding structure wall pipe |
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| CN202111355652.3A CN114261120B (en) | 2021-11-16 | 2021-11-16 | Manufacturing method and equipment for socket-and-spigot type winding structure wall pipe |
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| CN114261120A CN114261120A (en) | 2022-04-01 |
| CN114261120B true CN114261120B (en) | 2024-04-02 |
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| CN117087217B (en) * | 2023-10-20 | 2024-01-02 | 山东浩源管业有限公司 | Device and process for extrusion coating of inner wall of polyethylene plastic steel winding pipe |
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| CN114261120A (en) | 2022-04-01 |
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