CN114192643A - Integral type flanging flange production equipment and method - Google Patents

Abstract

The invention discloses integral flanged flange production equipment and a method, wherein a conveying device is arranged at the top of a bracket, a lifting mechanism is arranged at the bottom of the bracket, a heating device is arranged on a lifting table of the lifting mechanism, a flange forming device is arranged at the discharge end of the conveying device, the flange forming device comprises a pre-expanding die and a forming die which are arranged on a base, a clamping device is arranged on the base, and the forming die is connected with an extrusion mechanism. The connection mode ensures the pressure resistance degree of pipeline connection, avoids the problems of unreliable welding seams and high difficulty coefficient of the welding connection mode, realizes the quick and reliable connection of pipelines in a construction site, and is suitable for the technical field of pipeline connection.

Description

Integral type flanging flange production equipment and method

Technical Field

The invention belongs to the technical field of pipeline connection, and particularly relates to integral type flanging flange production equipment and method.

Background

The existing connection of polyethylene pure plastic pipes and steel wire mesh reinforced polyethylene composite pipes mostly adopts two electric melting welding modes of electric melting sleeve welding and electric melting flange welding. The electro-fusion welding has high requirements on the excircle size, the pipeline ellipticity and the environment of a pipeline port, if stains and deformation occur on the welding end face or the size is larger or smaller, installation deviation can be caused, meanwhile, the pipeline is difficult to install under the condition of ellipse, and the circumferential gaps after the electro-fusion welding are not equal, so that poor welding is caused, the molten polyethylene material is not uniformly distributed in the circumferential direction of a molten area, and the connecting face is unreliable; the electric fusion welding has strict requirements on the external environment, and if the environment is humid and has sewage, dust or water vapor, the operation is difficult, the phenomena of insecure welding craters after welding and even leakage and other serious defects of the pipeline in the using process can occur; in actual welding work, the technical capability requirement on operation technicians is very high, and if the related work cannot be carried out according to the equipment performance and the welding requirement, the quality of the welding engineering is reduced.

Disclosure of Invention

The invention provides integral flanging flange production equipment which is used for solving the technical problems that the adoption of electric fusion welding in the prior art has high difficulty coefficient, has higher requirements on the size of the excircle of a pipeline port, the ovality of a pipeline, the environment and the welding technology, ensures the difficulty of welding quality and influences the pipeline connection.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

an integral flange production device comprises a bracket, wherein a conveying device is arranged at the top of the bracket, a lifting mechanism is arranged at the bottom of the bracket, a heating device is arranged on a lifting platform of the lifting mechanism, a flange forming device is arranged at the discharge end of the conveying device, the flange forming device comprises a pre-expanding die and a forming die which are arranged on a base, a clamping device is arranged on the base, the forming die is connected with an extrusion mechanism, the conveying device is matched with the lifting mechanism to lift the heating device to the top of the bracket, a pipeline is conveyed to a station of the heating device through a conveying part of the conveying device, an inner supporting device and an inner supporting sleeve are arranged at the port of the pipeline, the inner supporting device is arranged at a position close to the port of the pipeline, the inner supporting device is arranged at the side of the inner supporting sleeve, which is far away from the port of the pipeline and is fixedly connected with the inner supporting device, and the side wall of the pipeline is uniformly heated under the combined action of a rotary supporting part of the conveying device and the heating device, and pre-expanding the pipeline port through a pre-expanding die, and finishing the flange structure processing of the pipeline port part through an extrusion mechanism by a forming die.

Further, the internal stay device includes internal stay mechanism, internal stay optical axis and with the tight portion that props of pipeline internal diameter adaptation, prop tight portion and include the tight piece that props of a plurality of arc structure, a plurality of props tight piece and passes through rubber ring suit in the internal stay mechanism outside, internal stay mechanism suit in the internal stay optical axis outside, the internal stay optical axis is kept away from pipeline port side lateral wall and is seted up the constant head tank, is equipped with the location portion of propping optical axis axial position in the mechanism edge of injecing in the constant head tank.

Further, the internal stay mechanism includes the tight structure of propping of suit in the internal stay optical axis outside, prop tight structure both ends and cooperate with the internal stay optical axis through the bush, the internal diameter and the external diameter looks adaptation of internal stay optical axis of bush, the external diameter of bush with prop tight structure's internal diameter looks adaptation and be connected rather than through the bolt, prop tight structure and keep away from the pipeline port side and be equipped with integrated into one piece's positioning disk, opposite side swing joint has the pressure disk, the pressure disk outside is equipped with gland nut, gland nut and internal stay structure threaded connection positioning disk and pressure disk structure all make the big-end-up little conical surface, each prop tight piece structure have with the conical surface of positioning disk and pressure disk adaptation.

Further, prop tight structure outer wall integrated into one piece structure and have a plurality of guide post, each prop tight block inner wall structure have with the guiding hole of guide post adaptation, interior propping cover is including integrated into one piece's connecting axle and sleeve, connecting axle and inside lining optical axis threaded connection and fixed through round nut locking, sleeve external diameter and pipeline internal diameter looks adaptation.

Further, clamping device is equipped with pipeline anchor clamps and die cavity anchor clamps that link to each other with the mounting bracket through the centre gripping cylinder respectively including setting firmly the mounting bracket on the base in the mounting bracket, expands device and forming device in advance and link to each other on sliding template through feeding cylinder movable mounting respectively, and sliding template passes through first slip subassembly slidable mounting on the die carrier and links to each other with the die carrier through first cylinder, and the die carrier passes through second slip subassembly slidable mounting on the base and links to each other with the base through the second cylinder.

Furthermore, the pre-expanding device comprises a primary expanding buckle die and a secondary expanding buckle die, the primary expanding buckle die is connected with the sliding template through the expanding buckle die mounting plate and the first ejection cylinder, and the secondary expanding buckle die is sleeved on the outer side of the primary expanding buckle die and is coaxially connected with the primary expanding buckle die.

Furthermore, a small-sized direct current sucker type electromagnet is fixedly arranged inside the primary buckle expanding die through a connecting plate, and a magnetic sucker is arranged inside the inner support sleeve.

Furthermore, the molding device comprises a mold cavity and a molding mold core, the mold cavity is arranged on the outer side of the port of the pipeline through a mold cavity clamp, and the molding mold core is connected with the sliding mold plate through a mold core positioning sleeve and a second ejection cylinder.

Further, heating device includes far infrared ceramic heating case, power unit, go up compression roller and two snub rollers, it is parallel with the axis of pipeline to go up compression roller and two snub rollers, power unit includes the motor, transmission assembly and chain, rotatory supporting part includes lift cylinder and two supporting rollers, the cylinder body of lift cylinder sets firmly in the bracket bottom, its expansion end passes through the support frame and links to each other with two backing rollers, the motor passes through transmission assembly and chain drive and goes up compression roller and snub roller and rotate, simultaneously under the combined action of two supporting rollers, the pipeline in the middle of drive compression roller and the snub roller rotates in the heating, guarantee that the pipeline port can be heated evenly in infrared ceramic heating case.

The invention also discloses a production method of the integral flanging flange, which comprises the following steps:

s1: the equipment installation is carried out according to the integral type flanging flange production equipment of claim 1, and the equipment is electrified;

s2: the end part is propped tightly, the inner supporting device is placed into the end opening of the pipeline to prop the end part of the pipeline tightly, then the inner supporting sleeve is placed and connected and fixed with the inner supporting device, and the distance between the inner supporting sleeve and the end part of the pipeline is set according to the requirement;

s3: heating the port, namely moving the port of the pipeline to a station of a heating device through a conveying device and a lifting mechanism to heat the port of the pipeline;

s4: performing pipe orifice preforming, matching the pipeline with a lifting mechanism through a conveying device after heating is completed, moving the pipeline to a pre-expansion station, clamping the pipeline through a clamping device, clamping a mold cavity outside the position of a molding flange of a pipeline port, and pre-expanding the pipeline port through the pre-expansion device to form a micro horn-shaped structure;

s5: forming a flange, removing the pre-expanding device after the pipeline port is preformed, moving the forming device to the station, forming a flange structure through the forming device and the extruding mechanism, and maintaining pressure;

s6: cooling and opening the die, maintaining the pressure, actuating the clamping device, loosening the pipeline, cooling the formed flange structure in the forming device by circulating water, and then opening the die to form the flange structure at the port of the pipeline;

s7: and (4) connecting pipelines, namely selecting a flange plate matched with the flange structure formed by the pipeline ports to complete mechanical connection among the pipelines.

Due to the adoption of the structure, compared with the prior art, the invention has the technical progress that:

utilize conveyor and elevating system to cooperate, rise to the bracket top with heating device, carry the pipeline to the heating device station through conveyor's conveying part, pipeline port department is equipped with interior strutting arrangement and interior brace, interior brace is located and is close to pipeline port position, interior strutting arrangement locates interior brace and keeps away from pipeline port side and rather than fixed connection, carry out the even heating to pipeline lateral wall under conveyor's rotation support portion and heating device combined action, the back is through expanding the mould in advance and expanding the pipeline port, forming die accomplishes the flange structure processing of pipeline port part through extrusion mechanism.

The inner support device and the inner support sleeve are used for supporting and correcting the size of the pipeline in the forming process, so that the size precision of the pipeline is ensured, the size precision problem of a pipeline port is avoided, and the size precision of the pipeline is influenced due to the fact that the pipeline is heated and deformed in the pre-expanding and forming processes, so that the pressure resistance strength of the pipeline is reduced and the connection is difficult; the flange structure is directly formed on the pipeline body through the processing material of the pipeline body, the flange structure formed by the end part of the pipeline to be connected is connected through the bolt, the pipeline and the pipeline are connected in a direct mechanical mode, the pressure resistance degree of the pipeline connection is ensured by the connection mode, the flange structure and the pipeline are integrated, the connection strength and the rigidity are high, the problems that the welding seam reliability is poor and the welding difficulty coefficient is large due to the adoption of the welding connection mode are solved, the installation process can be saved, the number of pipe fittings in the pipeline is reduced, the reliability of the pipeline connection can be ensured, the controllability is high, the sealing performance of a joint can be better realized, the pipeline can be quickly and reliably connected on a construction site, the construction process is simple and convenient, the interface quality can be ensured, manpower and material resources can be saved, and the later-stage pipeline maintenance is convenient.

In conclusion, the invention solves the technical problems that the prior art has high difficulty coefficient of electrofusion welding, has high requirements on the size of the excircle of the pipeline port, the ovality of the pipeline, the environment and the welding technology, has difficult guarantee of the welding quality and influences the pipeline connection, and is suitable for the technical field of pipeline connection.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the apparatus before forming a flange according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a heating device according to an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion A of FIG. 1;

FIG. 5 is a relative position diagram of the clamping assembly prior to pre-expansion of the flange forming assembly in accordance with an embodiment of the present invention;

FIG. 6 is a schematic view of the mechanism for connecting the inner supporting device and the inner liner according to the embodiment of the present invention;

fig. 7 is an exploded view of an inner support device in an embodiment of the present invention.

Labeling components: 00-a base, 01-a second sliding assembly, 02-a first sliding assembly, 1-a pipeline, 2-an internal supporting device, 21-an internal supporting optical axis, 211-a positioning groove, 22-a compression nut, 23-a bushing, 24-a tightening structure, 240-a compression disc, 241-a guide column, 242-a positioning disc, 25-a positioning part, 251-a positioning block, 252-a sliding shoe, 253-a spring, 26-a tightening block, 27-a rubber strip, 3-an internal supporting sleeve, 31-a sleeve, 32-a connecting shaft, 33-a round nut, 34-a magnetic suction cup, 4-a heating device, 5-a bracket, 51-a lifting mechanism, 511-a lifting platform, 52-a rotating supporting part, 521-a lifting cylinder and 522-a supporting roller, 53-conveying part, 531-transmission mechanism, 532-conveying motor, 533-roller, 6-power mechanism, 61-upper press roller, 62-lower carrier roller, 63-transmission component, 64-motor, 65-telescopic cylinder, 7-clamping device, 70-clamping cylinder, 71-pipeline clamp, 72-cavity clamp, 8-flange forming device, 81-cavity, 82-forming mold core, 83-primary button expanding mold, 84-secondary button expanding mold, 85-mold core positioning sleeve, 86-button expanding mold mounting plate, 87-small direct current suction cup type electromagnet, 91-mold base, 92-sliding mold plate, 93-shifting cylinder, 94-first ejection cylinder and 95-second ejection cylinder.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present invention.

The invention discloses integral flanged flange production equipment, as shown in figure 1-2, which comprises a bracket 5, wherein the top of the bracket 5 is provided with a conveying device, the bottom of the bracket is provided with a lifting mechanism 51, a lifting platform 511 of the lifting mechanism 51 is provided with a heating device 4, the discharge end of the conveying device is provided with a flange forming die 8, the flange forming die 8 comprises a pre-expanding die and a forming die which are arranged on a base 00, the base 00 is provided with a clamping device 7, the forming die is connected with an extrusion mechanism, the conveying device is matched with the lifting mechanism 51 to lift the heating device 4 to the top of the bracket 5, a pipeline 1 is conveyed to a station of the heating device 4 through a conveying part 53 of the conveying device, an inner supporting device 2 and an inner supporting sleeve 3 are arranged at the port position of the pipeline 1, the inner supporting sleeve 3 is arranged at the position close to the port of the pipeline 1, the inner supporting device 2 is arranged at the side of the inner supporting sleeve 3 far away from the port of the pipeline 1 and is fixedly connected with the inner supporting sleeve, the side wall of the pipeline 1 is uniformly heated under the combined action of the rotary supporting part 52 of the conveying device and the heating device 4, then the port of the pipeline 1 is pre-expanded to be in a micro-horn structure through a pre-expanding die, and the flange structure processing of the port part of the pipeline 1 is completed through an extrusion mechanism by a forming die. The forming die is a flange root die.

The clamping device 7 comprises a mounting frame fixedly arranged on the base 00, a pipeline clamp 71 and a die cavity 81 clamp 72 which are connected with the mounting frame through a clamping cylinder 70 are arranged in the mounting frame, a pre-expansion die and a forming die are movably arranged on a sliding template 92 through a feeding cylinder respectively, the sliding template 92 is slidably arranged on the die carrier 91 through a first sliding assembly 02 and is connected with the die carrier 91 through a shifting cylinder 93, and the die carrier 91 is slidably arranged on the base 00 through a second sliding assembly 01 and is connected with the base 00 through a second cylinder.

The invention has the beneficial effects that: utilize conveyor and elevating system 51 to cooperate, rise heating device 4 to bracket 5 top, conveying pipeline 1 to 4 stations of heating device through conveyor's conveying part 53, pipeline 1 port department is equipped with interior strutting arrangement 2 and interior strutting arrangement 3, interior strutting arrangement 3 is located and is close to pipeline 1 port position, interior strutting arrangement 2 is located interior strutting arrangement 3 and is kept away from pipeline 1 port side and rather than fixed connection, carry out the even heating to pipeline 1 lateral wall under conveyor's rotation support portion 52 and heating device 4 combined action, it is little horn-shaped structure to expand pipeline 1 port through expanding the mould in advance afterwards, forming die accomplishes the flange structure processing of pipeline 1 port part through extrusion mechanism.

The size of the pipeline 1 is supported and corrected through the inner supporting device 2 and the inner supporting sleeve 3 in the forming process, the size precision of the pipeline 1 is ensured, the size precision problem existing in the port of the pipeline 1 is avoided, and the size precision of the pipeline is influenced due to the fact that the pipeline 1 is subjected to thermal deformation in the pre-expanding and forming processes, so that the compression strength of the pipeline 1 is reduced and the connection is difficult; the flange structure is directly formed on the pipeline 1 body through the processing material of the pipeline 1 body, the flange structures formed at the end parts of the pipelines 1 to be connected are connected through bolts, the direct mechanical connection can be realized between the pipelines, the connecting mode ensures the pressure resistance degree of pipeline connection, the flange structure and the pipeline 1 are integrated, the connecting strength and rigidity are high, the problems of poor welding seam reliability and large welding difficulty coefficient caused by adopting a welding connecting mode are avoided, the installation procedure can be saved, the number of pipe fittings in the pipeline is reduced, the reliability of pipeline connection can be ensured, the controllability is high, can better realize the leakproofness of joint department, has realized that the pipeline can be quick, reliable connection at the job site, and the work progress is simple convenient, can guarantee the interface quality and can use manpower and materials sparingly again, and later stage pipeline 1 maintains the convenience.

As a preferred embodiment of the present invention, as shown in fig. 4-7, the inner supporting device 2 includes an inner supporting mechanism, an inner supporting optical axis 21, and a supporting portion adapted to the inner diameter of the pipeline 1, where the supporting portion includes a plurality of supporting blocks 26 with arc structures, the plurality of supporting blocks 26 are sleeved outside the inner supporting mechanism through rubber rings 27, the inner supporting mechanism is sleeved outside the inner supporting optical axis 21, a positioning groove 211 is disposed on a side wall of the inner supporting optical axis 21 away from the end of the pipeline 1, and a positioning portion 25 for limiting the axial position of the inner supporting mechanism along the inner supporting optical axis 21 is disposed in the positioning groove 211. The inner supporting mechanism comprises a supporting structure 24 sleeved outside an inner supporting optical axis 21, two ends of the supporting structure 24 are matched with the inner supporting optical axis 21 through a bushing 23, the inner diameter of the bushing 23 is matched with the outer diameter of the inner supporting optical axis 21, the outer diameter of the bushing 23 is matched with the inner diameter of the supporting structure 24 and is connected with the inner supporting optical axis through a bolt, the supporting structure 24 is far away from a port side of the pipeline 1 and is provided with an integrally formed positioning disc 242, the other side of the supporting structure is movably connected with a pressing disc 240, the outer side of the pressing disc 240 is provided with a pressing nut 22, the pressing nut 22 is in threaded connection with the inner supporting structure, the positioning disc 242 and the pressing disc 240 are both provided with conical surfaces with large inner parts and small outer parts, and each supporting block 26 is provided with a conical surface matched with the positioning disc 242 and the pressing disc 240. Prop tight structure 24 outer wall integrated into one piece structure and have a plurality of guide post 241, each prop tight 26 inner wall structure have with the guiding hole of guide post 241 adaptation, interior brace 3 includes integrated into one piece's connecting axle 32 and sleeve 31, connecting axle 32 and inside lining optical axis threaded connection and through round nut 33 locking fixed, sleeve 31 external diameter and 1 internal diameter looks adaptation of pipeline. The tightening structure 24 is provided with the guide post 241 which is matched with the rubber ring 27, so that the tightening and loosening actions of the tightening blocks 26 can be guided.

The positioning portion 25 includes a sliding shoe 252 having a sliding slot and a positioning block 251 adapted to the positioning slot 211, the sliding shoe 252 is fixedly connected to the positioning plate 242 through a bolt, the positioning block 251 is connected to the positioning block 251 through a screw, and a spring 253 is sleeved on the screw.

The working principle of the embodiment is as follows: the supporting structure 24 is connected with the inner supporting optical axis 21 through the bushings 23 at the two ends to carry out radial limiting; the positioning block 251 of the positioning portion 25 is clamped in the positioning groove 211, so as to limit the axial position of the tightening structure 24 on the inner supporting optical axis 21, and perform axial limiting. Prop tight structure 24 one end and set firmly positioning disk 242, other end swing joint has gland plate 240, and both all are equipped with the conical surface, can adjust the relative distance between gland plate 240 and the positioning disk 242 through rotatory gland nut 22, be the conical surface structure because of each props tight 26 both ends, so change positioning disk 242 and compress tightly the distance between the plate 240, can make each of propping tight portion prop tight 26 and draw close or keep away from each other under the rubber circle 2727 effect, thereby the adjustment props the external diameter size of tight portion, accomplish propping of pipeline 1 internal diameter and relaxing. The spring 253 is sleeved on the screw, so that the positioning block 251 is stably clamped in the positioning groove 211 to play a role in preventing looseness.

The beneficial effect of this embodiment lies in: the inner part of the pipeline 1 tightly supports the side wall of the pipeline 1 through the inner supporting device 2, the outer part of the pipeline 1 is externally clamped through the pipeline clamp 71, and through the fixing mode of the inner supporting outer clamp, on one hand, the pipeline 1 can be effectively fixed, and the phenomenon that the pipeline 1 displaces in the process that a port of the pipeline 1 is pre-expanded to form a bell-mouth-shaped structure and in the process that an extrusion mechanism forms a flange in a mold cavity 81, so that the forming quality of the flange structure is influenced, is prevented; on the other hand, interior strutting arrangement 2 is used for correcting the inside school circle of pipeline 1 simultaneously at the in-process of preheating, and interior brace 3 can effectively control in the shaping 1 inner wall structures of pipeline level and smooth, no step, fold and weld mark. The size precision of the pipeline 1 is guaranteed, deformation cannot occur under the clamping pressure of the pipeline clamp 71, the ovality of the pipeline 1 is corrected, the size precision of the pipeline 1 is guaranteed, the precision of flange forming of the port of the pipeline 1 is improved, and the structural strength and the installation precision of the pipeline 1 are guaranteed.

As a preferred embodiment of the present invention, as shown in fig. 3, the heating device 4 includes a far infrared ceramic heating box, a power mechanism 6, an upper press roller 61 and two lower support rollers 62, the upper press roller 61 and the two lower support rollers 62 are parallel to the axis of the pipeline 1, the power mechanism 6 includes a motor 64, a transmission assembly 63 and a chain, the rotating support portion 52 includes a lifting cylinder 521 and two support rollers 522, the cylinder body of the lifting cylinder 521 is fixedly disposed at the bottom of the bracket 5, the movable end of the lifting cylinder is connected to the two support rollers 522 through the support frames, the motor 64 drives the upper press roller 61 and the lower support rollers 62 to rotate through the transmission assembly 63 and the chain, and simultaneously, under the combined action of the two support rollers 522, the pipeline 1 between the upper press roller 61 and the lower support rollers 62 is driven to rotate while heating, so as to ensure that the port of the pipeline 1 can be heated uniformly in the infrared ceramic heating box. The conveying part 53 comprises a conveying motor 532 and a transmission mechanism 531, the conveying motor 532 is fixedly arranged on the bracket 5, and the roller 533 is driven to rotate through the transmission mechanism 531, so that the pipeline 1 can transversely move. The bottom of the lifting platform 511 is provided with a telescopic cylinder 65, the telescopic cylinder 65 is connected with the upper press roller 61 through a cross beam and used for adjusting the position of the upper press roller 61 and matching with the lower carrier roller 62 to realize the positioning and pressing functions of the pipeline 1.

The working principle and the beneficial effects of the embodiment are as follows: heating device 4 can carry out the hot melt to a certain extent with 1 body tip of pipeline for heat the shaping of being convenient for 1 tip of pipeline, make 1 body of pipeline and the better connection of forming flange structure be a whole, avoid 1 body of pipeline and the not firm phenomenon of butt fusion to appear in the flange structure that the shaping was gone out. The conveying part 53 can convey the pipeline 1 to realize transverse movement, and convey the pipeline 1 to a heating station or a flange forming station; the rotary supporting part 52 can be matched with an upper press roller 61 and a lower carrier roller 62 of the heating device 4 to enable the pipeline 1 to rotate and heat uniformly, and the lifting cylinder 521 is used for ascending or descending to realize switching between the conveying function and the rotating function of the pipeline 1; elevating system 51 can carry out fore-and-aft lift to heating device 4, make heating device 4 rise to the heating station when 1 heating of pipeline, during the flange shaping, reduce heating device 4, for 1 port flange shaping of pipeline provides the space, do not need pipeline 1 to carry out artifical the removal between heating station and shaping station, improve the linking speed between heating process and the shaping process, avoid pipeline 1 to descend at removal in-process port temperature, influence flange shaping effect, improve degree of automation.

As a preferred embodiment of the present invention, as shown in fig. 2, the pre-expansion die comprises a primary expansion die 83 and a secondary expansion die 84, the primary expansion die 83 is connected to a sliding template 92 through an expansion die mounting plate 86 and a first ejection cylinder 94, and the secondary expansion die 84 is sleeved outside the primary expansion die 83 and coaxially connected therewith. The inside of the primary buckle expanding die 83 is fixedly provided with a small direct current sucker type electromagnet 87 through a connecting plate, and the inside of the inner support sleeve 3 is provided with a magnetic sucker 34.

The molding die comprises a die cavity 81 and a molding die core 82, the die cavity 81 is arranged outside the port of the pipeline 1 through a die cavity 81 clamp 72, and the molding die core 82 is connected with a sliding die plate 92 through a die core positioning sleeve 85 and a second ejection cylinder 95.

The working principle and the beneficial effects of the embodiment are as follows: the port of the pipeline 1 is fully heated by a heating device 4 and then transferred to a pre-expanding station through the transverse movement of a conveying device, a clamping cylinder 70 acts to enable a pipeline clamp 71 to clamp the outer side of an inner support device 2, a mold cavity 81 is fixed at the position of a flange formed at the port of the pipeline 1 through a mold cavity 81 clamp 72, then the position of a pre-expanding mold is adjusted through a shifting cylinder 93 and a first sliding assembly 02, a primary expanding mold 83 is aligned with the port of the pipeline 1, a piston rod of a first ejection cylinder 94 advances, the primary expanding mold 83 is inserted into the port of the pipeline 1 to perform preliminary prefabrication on the port of the pipeline 1, and the primary expanding mold 83 performs prefabrication the port of the pipeline 1 to form a micro-horn structure; then, the small-sized direct current sucker type electromagnet 87 is electrified to act and is sucked with the magnetic sucker 34 in the inner support sleeve 3, the first ejection cylinder 94 continues to advance, and the port of the micro-horn structure pushed up by the primary buckle expanding die 83 is shaped through the secondary buckle expanding die 84, so that the pre-expanding process of the port of the pipeline 1 is completed; after pre-expanding is completed, a piston rod of a first ejection cylinder 94 retreats to drive a pre-expanding die to retreat, a magnetic sucker 34 drives an inner support sleeve 3 to move to the position flush with the port of the pipeline 1, a small direct current sucker type electromagnet 87 is powered off and is separated from the magnetic sucker 34 inside the inner support sleeve 3, the first ejection cylinder 94 continuously retreats to a specified position, a rear sliding template 92 moves upwards through a shifting cylinder 93 and a first sliding assembly 02 to move the pre-expanding die to the upper part, the forming die is moved to a forming station and is aligned to a micro-horn structure, a piston rod of a second ejection cylinder 95 advances to push the forming die core 82 to move towards a die cavity 81 to realize die assembly, a pipeline 1 material in a molten state is injected through an extrusion mechanism, and a flange structure is formed through pressure maintaining.

Before the flange structure is formed at the end part of the pipeline 1, prefabricating the port of the pipeline 1 to form a micro-horn structure, and flanging the polyethylene composite pipeline 1 body with the steel wire mesh framework to ensure that no steel wire is exposed at the end part of the pipeline 1; the micro-horn structure is prefabricated through the primary expanding and buckling die 83, and the micro-horn structure is formed through moulding and forming of the secondary expanding and buckling die 84, so that the ports are pre-expanded step by step in a subsection mode, and the problem that the port shape of the pipeline 1 is suddenly broken to influence the pre-expanding quality of the ports due to the fact that the primary expanding and forming are carried out is avoided. The change of the position of the inner supporting sleeve 3 in the pipeline 1 is realized by the way that the small-sized direct current sucker type electromagnet 87 is attracted with the magnetic sucker 34. When the port of the pipeline 1 is heated and pre-expanded, the inner bushing 23 is away from the port of the pipeline 1 by a certain distance, so that the inner wall of the pipeline 1 is supported, and the pipeline 1 is prevented from deforming in the heating process and the pre-expansion process of the port of the pipeline 1 to influence the size precision; after pre-expansion is completed, the first ejection cylinder 94 retreats, the small direct current sucker type electromagnet 87 and the magnetic sucker 34 are attracted, the magnetic sucker 34 drives the inner support sleeve 3 to move backwards and pull out to the position parallel to and level with the port of the pipeline 1 or the designated position, support preparation is made for flange structure forming, and the phenomenon that the port of the pipeline 1 deforms in the flange forming process to affect the precision of the pipeline 1 is avoided.

In a word, through the mode that small-size direct current sucking disc formula electro-magnet 87 and magnetic force sucking disc 34 actuation mutually, realize interior brace 3 in the change of pipeline 1 internal position, realize interior brace 3 and switch over in the position between different processes, can both accomplish effectively supporting pipeline 1 inner wall in every process, guarantee pipeline 1 size precision.

According to different sizes of the pipeline 1, the forming process is realized by replacing the pre-expansion die and the forming die and adjusting the heating time of the heating device 4, and a steel wire mesh reinforced polyethylene composite pipe (DN250) is taken as a test pipe fitting.

S1: the equipment installation is carried out according to the integral type flanging flange production equipment of claim 1, and the equipment is electrified;

s2: the end part is braced tightly, the inner bracing device 2 is placed in the port of the pipeline 1, the compression nut 22 is rotated to enable the compression disc 240 to move towards the positioning disc 242, the distance between the compression disc and the positioning disc is reduced, then the compression blocks 26 of the bracing part are pushed to expand outwards, the inner wall of the pipeline 1 is braced tightly, the end part of the pipeline 1 is braced tightly, then the inner bracing sleeve 3 is placed, the connecting shaft 32 of the inner bracing sleeve 3 is connected with the inner bracing optical axis 21 and is locked and fixed through the round nut 33, the connection and the fixation with the inner bracing device 2 are realized, and the distance between the end part of the sleeve 31 of the inner bracing sleeve 3 and the end part of the pipeline 1 is set according to requirements;

s3: heating the port, namely moving the port of the pipeline 1 to a station of a heating device 4 through a conveying device and a lifting mechanism 51 to heat the port of the pipeline 1; specifically, the infrared ceramic heating box is lifted to the height of the port of the pipeline 1 by the lifting mechanism 51, the port of the pipeline 1 is moved into the infrared ceramic heating box by the conveying motor 532 through the transmission mechanism 531 and the rollers 533, the position of the lower carrier rollers 62 is adjusted by the lifting mechanism 51, the pipeline 1 is positioned between the two lower carrier rollers 62, the two support rollers 522 are lifted by the action of the lifting cylinder 521, the pipeline 1 is separated from the rollers 533 of the conveying part 53, the motor 64 drives the upper press roller 61 and the lower carrier rollers 62 to rotate through the transmission assembly 63 and the chain, and simultaneously, under the combined action of the two support rollers 522, the pipeline 1 in the middle of the upper press roller 61 and the lower carrier rollers 62 is driven to rotate while being heated, so that the port of the pipeline 1 can be uniformly heated in the infrared ceramic heating box, and the heating time is 520 s;

s4: performing a pipe orifice, matching the pipeline 1 with the lifting mechanism 51 through the conveying device after heating, moving to a pre-expansion station, clamping the pipeline 1 through the clamping device, clamping the mold cavity 81 at the outer side of the position of the molding flange at the port of the pipeline 1, and pre-expanding the port of the pipeline 1 through the pre-expansion mold to form a micro horn-shaped structure; specifically, after the heating device 4 and the rotary supporting part 52 are retracted, the pipeline 1 is positioned on the roller 533 of the conveying part 53, the specific action is opposite to the action in step 3, and details are not repeated herein, the conveying part 53 continues to move the pipeline 1 transversely to the pre-expansion station, the clamping cylinder 70 acts to clamp the pipeline clamp 71 on the outer side of the internal support device 2, the mold cavity 81 is fixed at the position of the flange formed at the port of the pipeline 1 through the mold cavity 81 clamp 72, then the position of the pre-expansion mold is adjusted through the shifting cylinder 93 and the first sliding assembly 02, the primary buckle expanding mold 83 is aligned with the port of the pipeline 1, the piston rod of the first ejecting cylinder 94 advances, the primary buckle expanding mold 83 is inserted into the port of the pipeline 1 to perform preliminary prefabrication the port of the pipeline 1, and the primary buckle expanding mold 83 performs prefabrication the micro-horn structure at the port of the pipeline 1; then, the small-sized direct current sucker type electromagnet 87 is electrified to act and is sucked with the magnetic sucker 34 in the inner support sleeve 3, the first ejection cylinder 94 continues to advance, and the port of the micro-horn structure pushed up by the primary buckle expanding die 83 is shaped through the secondary buckle expanding die 84, so that the pre-expanding process of the port of the pipeline 1 is completed;

s5: forming a flange, namely removing the pre-expanding die after the port of the pipeline 1 is preformed, moving the forming die to the station, forming a flange structure through the forming die and an extrusion mechanism, and maintaining pressure; specifically, after pre-expansion is completed, a piston rod of a first ejection cylinder 94 retreats to drive a pre-expansion die to retreat, a magnetic sucker 34 drives an inner support sleeve 3 to move to a position flush with the port of the pipeline 1, a small direct current sucker type electromagnet 87 is powered off and is separated from the magnetic sucker 34 inside the inner support sleeve 3, the pre-expansion die continuously retreats to a specified position along with the first ejection cylinder 94, a rear sliding die plate 92 moves upwards through a shifting cylinder 93 and a first sliding assembly 02 to move the pre-expansion die to the upper part, the forming die is moved to a forming station and is aligned to a micro-horn structure, a piston rod of a second ejection cylinder 95 advances to push a forming die core 82 to move towards a die cavity 81 to realize die assembly, a pipeline 1 material in a molten state is injected through an extrusion mechanism, a flange structure is formed through pressure maintaining, and the pressure maintaining time is 3 minutes;

s6: cooling and opening the mold, maintaining the pressure, moving the clamping device 7, loosening the pipeline 1, performing circulating water cooling on the formed flange structure in a forming mold, and then opening the mold to form the flange structure at the port of the pipeline 1;

s7: the pipelines 1 are connected, and a flange plate matched with a flange structure formed at the end port of the pipeline 1 is selected to complete mechanical connection between the pipelines 1.

In conclusion, the invention solves the technical problems that the prior art has high difficulty coefficient of electric fusion welding, has high requirements on the size of the excircle of the port of the pipeline 1, the ovality of the pipeline 1, the environment and the welding technology, has difficult guarantee on the welding quality and affects the connection of the pipeline 1, and is suitable for the technical field of the connection of the pipeline 1.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. The utility model provides an integral turn-ups flange production facility, includes the bracket, its characterized in that: the top of the bracket is provided with a conveying device, the bottom of the bracket is provided with a lifting mechanism, a lifting platform of the lifting mechanism is provided with a heating device, the discharge end of the conveying device is provided with a flange forming device, the flange forming device comprises a pre-expanding die and a forming die which are arranged on a base, the base is provided with a clamping device, the forming die is connected with an extruding mechanism, the conveying device is matched with the lifting mechanism to lift the heating device to the top of the bracket, the pipeline is conveyed to a station of the heating device by a conveying part of the conveying device, an inner supporting device and an inner supporting sleeve are arranged at the port of the pipeline, the inner supporting sleeve is arranged at a position close to the port of the pipeline, the inner supporting device is arranged at the side of the inner supporting sleeve far away from the port of the pipeline and is fixedly connected with the inner supporting sleeve, the side wall of the pipeline is uniformly heated under the combined action of the rotary supporting part of the conveying device and the heating device, then the port of the pipeline is pre-expanded through a pre-expanding die, and the flange structure of the port part of the pipeline is machined through an extrusion mechanism by a forming die.

2. The integral type flanging flange production device of claim 1, which is characterized in that: interior strutting arrangement includes interior bracing mechanism, interior bracing optical axis and with the tight portion that props of pipeline internal diameter adaptation, props tight portion and includes the tight piece that props of a plurality of arc structure, a plurality of props tight piece and passes through rubber circle suit in the interior bracing mechanism outside, and interior bracing mechanism suit is in the interior bracing optical axis outside, and the pipeline port side lateral wall is kept away from to interior bracing optical axis has seted up the constant head tank, is equipped with the location portion of interior bracing mechanism edge interior bracing optical axis axial position of injecing in the constant head tank.

3. The production equipment of the integral flanging flange according to claim 2, characterized in that: the utility model discloses a pipe end mouth of pipe end mouth, including the interior bracing mechanism of suit in the interior bracing optical axis outside prop tight structure, prop tight structure both ends and cooperate with the interior bracing optical axis through the bush, the internal diameter and the interior bracing optical axis external diameter looks adaptation of bush, the external diameter of bush with prop tight structure's internal diameter looks adaptation and be connected rather than through the bolt, prop tight structure and keep away from pipeline port side and be equipped with integrated into one piece's positioning disk, opposite side swing joint has the pressure disk, the pressure disk outside is equipped with gland nut, gland nut and interior bracing structure threaded connection positioning disk and pressure disk structure all make the big-end-up conical surface, each props tight piece structure and has the conical surface with positioning disk and pressure disk adaptation.

4. The production equipment of the integral flanging flange according to claim 3, characterized in that: prop tight structure outer wall integrated into one piece structure have a plurality of guide post, prop tight block inner wall structure have with the guiding hole of guide post adaptation, interior brace cover is including integrated into one piece's connecting axle and sleeve, connecting axle and inside lining optical axis threaded connection and fixed through round nut locking, sleeve external diameter and pipeline internal diameter looks adaptation.

5. The integral type flanging flange production device of claim 1, which is characterized in that: the clamping device comprises a mounting frame fixedly arranged on the base, a pipeline clamp and a die cavity clamp which are respectively connected with the mounting frame through a clamping cylinder are arranged in the mounting frame, the pre-expanding device and the forming device are respectively movably arranged on the sliding template through a feeding cylinder, the sliding template is slidably arranged on the die carrier through a first sliding assembly and is connected with the die carrier through a first cylinder, and the die carrier is slidably arranged on the base through a second sliding assembly and is connected with the base through a second cylinder.

6. The integral type flanging flange production device of claim 5, which is characterized in that: the pre-expanding device comprises a primary expanding buckle die and a secondary expanding buckle die, the primary expanding buckle die is connected with the sliding template through the expanding buckle die mounting plate and the first ejection cylinder, and the secondary expanding buckle die is sleeved on the outer side of the primary expanding buckle die and is coaxially connected with the primary expanding buckle die.

7. The integral type flanging flange production device of claim 6, which is characterized in that: the inside of the primary buckle expanding die is fixedly provided with a small direct current sucker type electromagnet through a connecting plate, and a magnetic sucker is arranged inside the inner support sleeve.

8. The integral type flanging flange production device of claim 5, which is characterized in that: the molding device comprises a mold cavity and a molding mold core, the mold cavity is arranged on the outer side of the port of the pipeline through a mold cavity clamp, and the molding mold core is connected with the sliding mold plate through a mold core positioning sleeve and a second ejection cylinder.

9. The integral flange production equipment of claim 1, characterized in that: heating device includes far infrared ceramic heating case, power unit, go up compression roller and two snub rollers, it is parallel with the axis of pipeline to go up compression roller and two snub rollers, power unit includes the motor, transmission assembly and chain, rotatory supporting part includes lift cylinder and two supporting rollers, the cylinder body of lift cylinder sets firmly in the bracket bottom, its expansion end passes through the support frame and links to each other with two backing rollers, the motor passes through transmission assembly and chain drive and goes up compression roller and snub roller and rotate, simultaneously under the combined action of two supporting rollers, the pipeline in the middle of drive compression roller and the snub roller rotates in the heating, guarantee that the pipeline port can be heated evenly in infrared ceramic heating case.

10. The production method of the integral type flanging flange according to claim 1, characterized in that: the method comprises the following steps:

s1: the equipment installation is carried out according to the integral type flanging flange production equipment of claim 1, and the equipment is electrified;

s2: the end part is propped tightly, the inner supporting device is placed into the end opening of the pipeline to prop the end part of the pipeline tightly, then the inner supporting sleeve is placed and connected and fixed with the inner supporting device, and the distance between the inner supporting sleeve and the end part of the pipeline is set according to the requirement;

s3: heating the port, namely moving the port of the pipeline to a station of a heating device through a conveying device and a lifting mechanism to heat the port of the pipeline;

s4: performing pipe orifice preforming, matching the pipeline with a lifting mechanism through a conveying device after heating is completed, moving the pipeline to a pre-expansion station, clamping the pipeline through a clamping device, clamping a mold cavity outside the position of a molding flange of a pipeline port, and pre-expanding the pipeline port through the pre-expansion device to form a micro horn-shaped structure;

s5: forming a flange, removing the pre-expanding device after the pipeline port is preformed, moving the forming device to the station, forming a flange structure through the forming device and the extruding mechanism, and maintaining pressure;

s6: cooling and opening the die, maintaining the pressure, actuating the clamping device, loosening the pipeline, cooling the formed flange structure in the forming device by circulating water, and then opening the die to form the flange structure at the port of the pipeline;

s7: and (4) connecting pipelines, namely selecting a flange plate matched with the flange structure formed by the pipeline ports to complete mechanical connection among the pipelines.

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