CN111702089A - Multi-section double-variable adaptive end expansion equipment for expansion joint of metal pipe product - Google Patents
Multi-section double-variable adaptive end expansion equipment for expansion joint of metal pipe product Download PDFInfo
- Publication number
- CN111702089A CN111702089A CN202010580072.3A CN202010580072A CN111702089A CN 111702089 A CN111702089 A CN 111702089A CN 202010580072 A CN202010580072 A CN 202010580072A CN 111702089 A CN111702089 A CN 111702089A
- Authority
- CN
- China
- Prior art keywords
- expansion
- fixedly connected
- dual
- motor
- double
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/02—Enlarging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/06—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes in openings, e.g. rolling-in
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/08—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal
Abstract
The invention discloses a multi-section double-change adaptive end expansion device for metal pipe product expansion joint, belonging to the expansion joint technical field, which can realize a gradual change type mechanical expansion principle, adopts a special double-change expansion head, greatly reduces the gradual change amplitude change on the premise of keeping the expansion length unchanged, ensures that the expansion pressure of the metal pipe product is always kept in a certain safety range, is not easy to crack or deform unevenly due to overlarge expansion pressure, realizes free conversion between the hardness and the softness of the double-change expansion head under the air pressure condition through the inflation principle and the application of D3O material, further can realize the mutual interval adaptation between the metal pipe product and the double-change expansion head, finishes the multi-section expansion of the specified expansion length of the end, avoids the expansion over-limit condition, obviously improves the end expansion quality and the forming strength of the metal pipe product, and the expansion efficiency can be improved, and the method has a relatively high application prospect.
Description
Technical Field
The invention relates to the technical field of expansion joint, in particular to a multi-section double-variable adaptive end expansion device for expansion joint of a metal pipe product.
Background
The hydraulic pipe expander is special hydraulic expansion joint equipment for expansion joint of pipes and pipe plates in the manufacture of equipment such as heat exchangers, condensers, high-pressure heaters and the like, and the hydraulic expansion joint technology has the advantages of low manufacturing cost, light labor intensity, short manufacturing period, uniform and reliable expansion joint quality and the like. The hydraulic expansion joint technology is widely applied to the manufacture of heat exchangers in the fields of petrifaction, electric power, boilers, nuclear power, refrigeration and the like, and the quality and the production efficiency of domestic heat exchanger equipment are greatly improved.
The connection of the heat exchange tube and the tube plate mainly comprises expansion joint, welding, expansion welding and other methods, and the expansion joint method can be divided into mechanical expansion joint, hydraulic expansion joint, rubber expansion joint, explosion expansion joint and other methods. Domestic enterprises generally adopt a mechanical expansion joint method, and the method has high labor intensity and low working efficiency. When the heat exchanger with the tube plate exceeding 100mm cannot realize full-thickness expanded joint, the indexes such as actual tube expansion rate, pull-off force, sealing pressure and the like are not directly related, an operator determines the expanded joint tightness mainly according to experience, and the expanded joint quality is greatly influenced by human factors. And the lubricating medium used in the expansion joint can permeate into the gaps between the tubes and the tube plates, so that the subsequent welding quality is adversely affected.
The hydraulic pipe expander for domestic hydraulic expansion joint technology consists of high strength alloy steel core rod and high pressure resistant imported elastic rubber, and is one integral design, and can bear superhigh pressure without need of sealing part.
Particularly, when the end of a metal pipe product is expanded, the problem faced by hydraulic expansion is the problem of pressure control, the advantage of uniformity of the hydraulic expansion is converted into a defect at this time, the pressure on the end and the deep part of an expansion area is consistent, but the deep part of the end is easy to deform, so that the expansion crack phenomenon caused by overlarge pressure is easy to occur, the expansion crack phenomenon in the deep part is easy to occur, the mechanical expansion is gradually-changed extrusion expansion, but the expansion length is limited, the gradual change amplitude is large, the pressure during pipe expansion is still large, the expansion crack or uneven deformation phenomenon is easy to occur, the pipe expansion failure is caused, and the mode of adopting multiple progressive pipe expansion can undoubtedly reduce the pipe expansion efficiency and increase the cost.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a multi-section double-variable adaptive end expansion device for metal pipe product expansion joint, which can realize a gradual change type mechanical expansion principle, adopts a special double-variable expansion head, greatly reduces gradual change amplitude change on the premise of keeping the expansion length unchanged, ensures that the expansion pressure of a metal pipe product is always kept in a certain safety range, is not easy to crack or deform unevenly due to overlarge expansion pressure, realizes free transition between the hardness and the softness of the double-variable expansion head under the condition of air pressure through the inflation principle and the application of D3O material, further can realize the mutual interval adaptation between the metal pipe product and the double-variable expansion head, finishes the multi-section expansion of the specified expansion length of the end, avoids the condition of expansion over limit, obviously improves the end expansion quality and the forming strength of the metal pipe product, and the expansion efficiency can be improved, and the method has a relatively high application prospect.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A multi-section double-variable adaptive end expansion device for expansion joint of metal tube products comprises a workbench, wherein the upper end of the workbench is fixedly connected with a workpiece clamping box, a forming pipe cavity is dug on the workpiece clamping box, a metal pipe product is inserted into the forming pipe cavity, the right side of the workpiece clamping box is provided with a mounting rack fixedly connected with the upper end of the workbench, the right end of the mounting rack is fixedly provided with a cylinder, the output end of the cylinder is fixedly connected with a motor box, a first motor is fixedly arranged in the motor box, the output end of the first motor is fixedly connected with a ventilation base, one end of the ventilation base, which is close to the workpiece clamping box, is fixedly connected with a dual-change expansion head, the dual-change expansion head comprises an alloy steel part and a dual-change part, the alloy steel part is fixedly connected with the ventilation base, and the diameter of the dual-change part is gradually reduced in the direction away from one side of the alloy steel part.
Further, an air pump is fixedly installed in the air exchange base, an air exchange pipe is connected to the air pump, the air exchange pipe penetrates through the alloy steel part and extends to the inner side of the dual-property part, air pressure in the dual-property part is controlled based on the air suction and air exhaust principle of the air pump, the dual-property part can be hardened when the air pressure is sufficiently large, and the dual-property part can be softened when the air pressure is reduced.
Further, the double-property part comprises an innermost inner elastic air bag, the outer surface of the inner elastic air bag is covered with a double-property self-changing layer, an elastic metal layer is fixedly connected to the outer surface of the dual self-changing layer, one end of the inner elastic air bag, far away from the alloy steel part, is fixedly connected with a matched alloy head, one end of the inner elastic air bag, far away from the alloy steel part, is fixedly connected with the alloy steel part, the elastic metal layer is fixedly connected between the alloy steel part and the alloy head, the inner elastic air bag plays a role of containing air, the dual self-changing layer plays a role of protecting the inner elastic air bag on one hand, and also has the characteristic of hardening under pressure on the other hand, the integral hardening strength of the dual part after being inflated is improved, the elastic metal layer plays a role of supporting and directly contacts and extrudes the metal pipe product, and the double-property part can be elastically deformed after being softened to realize self-adaptation, thereby playing the roles of shaping and fixing.
Furthermore, the dual-property self-changing layer is made of D3O materials, the elastic metal layers are a plurality of elastic metal sheets distributed in an annular array and are independent of each other, the D3O materials are kept in a loose state in a normal state, and are soft and elastic, once being violently impacted or extruded, molecules are locked with each other at once, and are quickly tightened and hardened to digest external force, so that a protective layer is formed, after the external force disappears, the materials can return to the original loose soft elastic state, and the elastic metal layers can be deformed more conveniently for the independent elastic metal sheets.
Further, the dual nature is inlayed in the automorphism layer and is had many heating wires that are the annular array and distribute, and heating wire electric connection has the group battery of installation in the interior elasticity gasbag including, still fixedly connected with design heat conduction net between dual nature automorphism layer and the elasticity metal level, many heat conduction wires of fixedly connected with between design heat conduction net and the heating wire, the heating wire plays the effect that heats up, conveniently forces tubular metal resonator goods to take place expend with heat and contract with cold phenomenon and expand more easily, design heat conduction net plays the pressure dispersion effect to the elasticity metal level on the one hand, protects dual nature automorphism layer, and on the other hand can utilize the heat conduction of heat conduction silk with the heating wire production to tubular metal resonator goods on rapidly.
Further, workstation upper end fixedly connected with slider, slider upper end sliding connection has assorted slide rail, and fixed connection between slide rail upper end and the motor case, through the high accuracy cooperation between slide rail and the slider, improves the precision that the amphimorphic expansion head marchd and expand the in-process, is difficult for appearing the skew error, improves the expansion quality.
Further, a pair of symmetrically distributed vacuum pumps are fixedly mounted in the workpiece clamping box, a plurality of uniformly distributed adsorption holes are formed in the side wall of the forming tube cavity, the vacuum pumps are communicated with the adsorption holes through air pipes, the vacuum pumps are used for pumping air in the adsorption holes to form a vacuum state, the metal tube product is positioned under the action of atmospheric pressure, and the metal tube product is not prone to deviation errors in the expansion process.
Further, shaping lumen right side is equipped with the limiting plate of pressing from both sides the box lateral wall with the work piece and laminating, the limiting plate is close to work piece and presss from both sides box one end and installs pressure sensor, work piece presss from both sides the incasement fixedly connected with second motor, the output and the limiting plate one end fixed connection of second motor play the initial positioning effect to tubular metal resonator goods on the one hand, and on the other hand can regard as the trigger signal that the vacuum adsorption was fixed a position, can carry out the location of high accuracy to tubular metal resonator goods fast, guarantees the normal clear of the work that expands.
Furthermore, the inner end of the inner elastic air bag is fixedly connected with a transversely-arranged breathable core part, the ventilation pipes extend into the breathable core part and are communicated with each other, a plurality of uniformly-distributed ventilation holes are formed in the second motor, the breathable core part can play a role in transversely positioning the dual-property part on one hand, the retraction phenomenon is not easy to occur in the expansion process, on the other hand, air flow can be sprayed out in a dispersing high-pressure mode, the impact force of air on the inner elastic air bag and the dual-property self-changing layer is improved, and further the hardening degree of the dual-property self-changing layer is improved.
Further, still install the control cabinet that is connected with the main power supply on the workstation, vacuum pump, cylinder, first motor, second motor, air pump, group battery and pressure sensor all are connected with the control cabinet, and technical staff can realize programming input control command, can realize the automatic inflation that expands of tubular metal resonator goods, reduces the human cost, improves the efficiency of expanding, and is difficult for makeing mistakes.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) the scheme can realize a gradual change type mechanical expansion principle, adopts a special dual-change expansion head, greatly reduces gradual change amplitude change on the premise of maintaining the expansion length unchanged, ensures that the expansion pressure of the metal pipe product is always kept in a certain safety range, is not easy to crack or deform unevenly due to overlarge expansion pressure, realizes free conversion between the rigidity and the softness of the dual-change expansion head under the air pressure condition through the inflatable principle and the application of a D3O material, further can realize mutual interval adaptation between the metal pipe product and the dual-change expansion head, completes the multi-section expansion of the appointed expansion length of the end part, avoids the expansion overrun condition, obviously improves the end expansion quality and the forming strength of the metal pipe product, can improve the expansion efficiency, and has a higher application prospect.
(2) Fixed mounting has the air pump in the base of taking a breath, is connected with the pipe of taking a breath on the air pump, and the pipe of taking a breath runs through alloy steel portion and extends to the amphiprotic portion inboard, controls the atmospheric pressure in the amphiprotic portion based on breathing in of air pump and the principle of bleeding, can realize the sclerosis of amphiprotic portion when atmospheric pressure is big enough, can realize the softening of amphiprotic portion when atmospheric pressure reduces.
(3) The double-nature portion includes the innermost interior elasticity gasbag, interior elasticity gasbag surface covering has the double-nature from the layer of changing, double-nature is from changing layer external surface fixed connection elastic metal layer, alloy steel portion one end fixedly connected with assorted alloy head is kept away from to interior elasticity gasbag, interior elasticity gasbag is kept away from between one end and the alloy steel portion fixed connection, and elastic metal layer fixed connection is between alloy steel portion and alloy head, interior elasticity gasbag plays the effect of holding gas, double-nature is from changing the layer and is played the guard action to interior elasticity gasbag on the one hand, on the other hand has the characteristic of pressurized hardening equally, improve the whole hardening intensity of aerifing back double-nature portion, elastic metal layer plays supporting action direct contact extrusion tubular metal product, and can take place elastic deformation after double-nature portion softens and realize self-adaptation, play setting and fixed effect.
(4) The dual-property self-changing layer is made of a D3O material, the elastic metal layers are a plurality of elastic metal sheets distributed in an annular array and are independent of each other, the D3O material is kept in a loose state in a normal state, and is soft and elastic, once being violently impacted or extruded, molecules are locked with each other at once, and are quickly tightened and hardened to digest external force, so that a protective layer is formed, after the external force disappears, the material can return to the initial loose soft elastic state, and the elastic metal layers can be deformed more conveniently for the independent elastic metal sheets.
(5) The dual nature is inlayed in the automorphism layer and is had many heating wires that are the annular array and distribute, and heating wire electric connection has the group battery of installation in the interior elasticity gasbag, still fixedly connected with design heat conduction net between dual nature automorphism layer and the elasticity metal level, many heat conduction wires of fixedly connected with between design heat conduction net and the heating wire, the heating wire plays the effect that heats up, conveniently force the tubular metal resonator goods to take place expend with heat and contract with cold phenomenon and expand more easily, design heat conduction net plays the pressure dispersion effect to the elasticity metal level on the one hand, protect dual nature automorphism layer, on the other hand can utilize the heat conduction wire to conduct the heat that the heating wire produced to the tubular metal resonator goods rapidly.
(6) Workstation upper end fixedly connected with slider, slider upper end sliding connection has assorted slide rail, and fixed connection between slide rail upper end and the motor case, through the high accuracy cooperation between slide rail and the slider, improves the precision that the amphimorphic expansion head marchd and expand the in-process, is difficult for appearing the skew error, improves the expansion quality.
(7) A pair of vacuum pumps which are symmetrically distributed are fixedly installed in the workpiece clamping box, a plurality of adsorption holes which are evenly distributed are formed in the side wall of the forming tube cavity, the vacuum pumps are communicated with the adsorption holes through air pipes, air in the adsorption holes is pumped out through the vacuum pumps to form a vacuum state, the metal tube product is positioned under the action of atmospheric pressure, and the metal tube product is not prone to deviation errors in the expansion process.
(8) The limiting plate that the shaping lumen right side was equipped with and presss from both sides the box lateral wall with the work piece and laminate mutually, the limiting plate is close to work piece and presss from both sides box one end and installs pressure sensor, work piece presss from both sides the incasement fixedly connected with second motor, the output and the limiting plate one end fixed connection of second motor play the initial positioning effect to tubular metal resonator goods on the one hand, on the other hand can regard as the trigger signal of vacuum adsorption location, can carry out the location of high accuracy to tubular metal resonator goods fast, guarantee the normal clear of the work that expands.
(9) The ventilative core that interior elastic air bag inner fixedly connected with transversely set up, the scavenge pipe extends to in the ventilative core and communicates each other, it has a plurality of evenly distributed's bleeder vent to cut on the second motor, ventilative core can play the transverse orientation effect to the amphiprotic portion on the one hand, difficult appearance is expanding the in-process and appears retracting the phenomenon, on the other hand can disperse the air current high pressure blowout, improve the impact force on the internal elastic air bag of gas and amphiprotic automorphism layer, and then improve the amphiprotic automorphism degree of hardening on the layer.
(10) Still install the control cabinet that is connected with the main power supply on the workstation, vacuum pump, cylinder, first motor, second motor, air pump, group battery and pressure sensor all are connected with the control cabinet, and technical staff can realize programming input control command, can realize the automatic inflation of tubular metal resonator goods, reduces the human cost, improves the inflation efficiency, and is difficult for makeing mistakes.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the bi-variably expandable head portion of the present invention;
FIG. 3 is an exploded view of a bi-directionally varying expansion head portion of the present invention;
FIG. 4 is a schematic view of the structure at A in FIG. 3;
FIG. 5 is a schematic structural view of the present invention in a state where the dual part is softened;
FIG. 6 is a schematic structural view of the expansion process of the metal tube article according to the present invention;
fig. 7 is a schematic view of a prior art mechanical expansion.
The reference numbers in the figures illustrate:
1 workbench, 2 workpiece clamping boxes, 3 molding tube cavities, 4 vacuum pumps, 5 ventilation bases, 6 dual-change expansion heads, 61 alloy steel parts, 62 dual-change parts, 621 inner elastic air bags, 622 dual-change layers, 623 elastic metal layers, 63 ventilation core parts, 7 mounting frames, 8 cylinders, 9 motor boxes, 10 first motors, 11 sliding rails, 12 sliding blocks, 13 second motors, 14 limiting plates, 15 air pumps, 16 ventilation holes, 17 ventilation tubes, 18 electric heating wires, 19 shaping heat-conducting nets and 20 control tables.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" 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 otherwise specifically stated or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are used in a broad sense, and for example, "connected" may be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements.
Example 1:
referring to fig. 1, a multi-section double-adaptation type end expansion device for metal pipe product expansion comprises a workbench 1, a work clamp box 2 is fixedly connected to the upper end of the workbench 1, a forming tube cavity 3 is drilled on the work clamp box 2, the forming tube cavity 3 is a tube cavity formed by expanding and forming a metal pipe product, the metal pipe product is inserted into the forming tube cavity 3, a mounting frame 7 fixedly connected to the upper end of the workbench 1 is arranged on the right side of the work clamp box 2, a cylinder 8 is fixedly mounted at the right end of the mounting frame 7, a motor box 9 is fixedly connected to the output end of the cylinder 8, a first motor 10 is fixedly mounted in the motor box 9, a ventilation base 5 is fixedly connected to the output end of the first motor 10, the metal pipe product is expanded by using the rotating force of the first motor 10 in a spinning manner, expansion is more facilitated due to the relation of stress and heat generation, a double-change expansion head 6 is fixedly connected to one end of the ventilation base, the upper end of the workbench 1 is fixedly connected with a slide block 12, the upper end of the slide block 12 is slidably connected with a matched slide rail 11, the upper end of the slide rail 11 is fixedly connected with a motor box 9, the precision of the double-change expansion head 6 in the advancing and expansion process is improved through high-precision matching between the slide rail 11 and the slide block 12, the offset error is not easy to occur, the expansion quality is improved, a pair of symmetrically distributed vacuum pumps 4 are fixedly arranged in the workpiece clamping box 2, a plurality of uniformly distributed adsorption holes are drilled on the side wall of the forming tube cavity 3, the vacuum pumps 4 are communicated with the adsorption holes through air pipes, the air in the adsorption holes is pumped out by the vacuum pumps 4 to form a vacuum state, the metal tube product is positioned by the action of atmospheric pressure, the offset error is not easy to occur in the expansion process, a limiting plate 14 which is attached to the side wall of the workpiece clamping box 2 is arranged on the right side of the forming, fixedly connected with second motor 13 in the work holder case 2, the output and the 14 one end fixed connection of limiting plate of second motor 13 play the initial positioning effect to tubular metal resonator goods on the one hand, and on the other hand can regard as the trigger signal of vacuum adsorption location, can carry out the location of high accuracy to tubular metal resonator goods fast, guarantees the normal clear of the work of expanding.
Referring to fig. 2, the dual-change expansion head 6 includes an alloy steel portion 61 and a dual-property portion 62, the alloy steel portion 61 is fixedly connected with the air exchange base 5, the diameter of the dual-property portion 62 gradually decreases toward a side away from the alloy steel portion 61, an air pump 15 is fixedly installed in the air exchange base 5, an air exchange tube 17 is connected to the air pump 15, the air exchange tube 17 penetrates through the alloy steel portion 61 and extends to the inner side of the dual-property portion 62, the air pressure in the dual-property portion 62 is controlled based on the air suction and air exhaust principle of the air pump 15, the dual-property portion 62 is hardened when the air pressure is sufficiently high, the dual-property portion 62 is softened when the air pressure decreases, a transversely-disposed ventilation core portion 63 is fixedly connected to the inner end of the inner elastic air bag 621, the ventilation tube 17 extends into the ventilation core portion 63 and is communicated with each other, a plurality of uniformly-distributed ventilation holes 16 are drilled in the second motor 13, and the ventilation core portion 63 can laterally, the retraction phenomenon is not easy to occur in the expansion process, and on the other hand, the gas flow can be sprayed out in a dispersed high pressure manner, so that the impact force of the gas on the inner elastic airbag 621 and the dual self-changing layer 622 is improved, and the hardening degree of the dual self-changing layer 622 is further improved.
Referring to fig. 3, the dual-property portion 62 includes an innermost inner elastic airbag 621, an outer surface of the inner elastic airbag 621 is covered with a dual-property self-changing layer 622, an outer surface of the dual-property self-changing layer 622 is fixedly connected with an elastic metal layer 623, one end of the inner elastic airbag 621 away from the alloy steel portion 61 is fixedly connected with a matched alloy head 624, one end of the inner elastic airbag 621 away from 624 is fixedly connected with the alloy steel portion 61, and the elastic metal layer 623 is fixedly connected between the alloy steel portion 61 and the alloy head 624, the inner elastic airbag 621 plays a role of containing gas, the dual-property self-changing layer 622 plays a role in protecting the inner elastic airbag 621 on one hand, and also has a function of hardening under pressure on the other hand, so as to improve the overall hardening strength of the inflated dual-property portion 62, the elastic metal layer 623 plays a role in supporting and directly contacts with an extruded metal tube product, and can, the alloy head 624 plays a role in shaping and fixing, the dual self-changing layer 622 is made of D3O material, the elastic metal layer 623 is a plurality of elastic metal sheets distributed in a circular array and independent from each other, the D3O material is kept in a relaxed state in a normal state, is soft and elastic, once being severely impacted or extruded, molecules are locked with each other immediately, and are rapidly tightened and hardened to digest external force to form a protective layer, when the external force disappears, the material can return to the original relaxed soft elastic state, and the elastic metal layer 623 is made of the independent elastic metal sheets and can deform more conveniently.
Referring to fig. 4, a plurality of heating wires 18 distributed in an annular array are embedded in the dual self-changing layer 622, the heating wires 18 are electrically connected to a battery pack installed in the inner elastic airbag 621, a shaping heat conduction net 19 is further fixedly connected between the dual self-changing layer 622 and the elastic metal layer 623, a plurality of heat conduction wires are fixedly connected between the shaping heat conduction net 19 and the heating wires 18, the heating wires 18 perform heating and warming functions to facilitate expansion and contraction of the metal tube product, the shaping heat conduction net 19 performs a pressure dispersion function on the elastic metal layer 623 to protect the dual self-changing layer 622, and heat generated by the heating wires 18 can be rapidly conducted to the metal tube product by the heat conduction wires.
Still install the control cabinet 20 that is connected with the main power supply on workstation 1, control cabinet 20 is prior art, consults the digit control machine tool, and concrete structural circuit and control principle are known technology, and no longer give unnecessary details here, and vacuum pump 4, cylinder 8, first motor 10, second motor 13, air pump 15, group battery and pressure sensor all are connected with control cabinet 20, and technical staff can realize programming input control command, can realize the automatic inflation of tubular metal product, reduces the human cost, improves the efficiency of expanding, and is difficult for makeing mistakes.
During expansion, a technician inserts the end part to be expanded of a metal pipe product from the left side of a forming pipe cavity 3 to a limit plate 14 for contact, a pressure sensor receives a pressure signal and sends the pressure signal to a console 20, the console 20 controls a vacuum pump 4 to start to carry out vacuum adsorption positioning on the metal pipe product, then a second motor 13 is started to drive the limit plate 14 to rotate and move away from the right side of the forming pipe cavity 3, a cylinder 8 is started to indirectly drive a dual-property change expansion head 6 to approach and insert the metal pipe product, an air pump 15 is started to inflate an inner elastic air bag 621, the inner elastic air bag 621 and a dual-property self-changing layer 622 are gradually hardened along with the impact of air flow and the increase of air pressure, please refer to fig. 5, after the metal pipe product is hardened to a certain degree, the first motor 10 is started to drive the dual-property change expansion head 6 to rotate, please refer to fig. 6, after spinning expansion for, the air pump 15 is started to pump out partial air to reduce the air pressure in the inner elastic air bag 621, the dual-property portion 62 is softened and recovers a deformable state, at the moment, the alloy steel portion 61 just contacts with the expansion end portion, the dual-property portion 62 automatically adapts to the deformation of the metal pipe product in the process of continuing screwing, expansion of the metal pipe product is not carried out, the front end of the dual-property portion 62 starts to correct the shape of the attached metal pipe product, then the alloy steel portion 61 carries out final expansion on the metal pipe product to realize final forming, and the metal pipe product can be taken down after the dual-property change expansion head 6 is withdrawn.
Compared with the existing mechanical expansion, please refer to fig. 7, the invention can realize the gradual change type mechanical expansion principle, adopt the special dual-change expansion head 6, greatly reduce the gradual change amplitude change on the premise of maintaining the expansion length unchanged, keep the expansion pressure of the metal tube product in a certain safe range all the time, and is not easy to crack or deform unevenly due to the overlarge expansion pressure, through the inflation principle and the application of the D3O material, realize the free transformation between the hardness and softness of the dual-change expansion head 6 under the air pressure condition, further realize the mutual interval adaptation between the metal tube product and the dual-change expansion head 6, complete the multi-stage expansion of the specified expansion length of the end part, avoid the expansion over limit condition, obviously improve the end part expansion quality and the forming strength of the metal tube product, and can improve the expansion efficiency, has a high application prospect.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (10)
1. The utility model provides a two become adaptive type tip dilatations equipment of multistage for expanded joint of tubular metal product, includes workstation (1), its characterized in that: the work piece presss from both sides case (2) on workstation (1) upper end fixedly connected with work piece, it has shaping lumen (3) to cut on work piece presss from both sides case (2), the interpolation of shaping lumen (3) is equipped with tubular metal product, work piece presss from both sides case (2) right side and is equipped with mounting bracket (7) of fixed connection in workstation (1) upper end, mounting bracket (7) right-hand member fixed mounting has cylinder (8), the output fixedly connected with motor case (9) of cylinder (8), fixed mounting has first motor (10) in motor case (9), the output fixedly connected with of first motor (10) base of taking a breath (5), base of taking a breath (5) are close to work piece presss from both sides case (2) one end fixedly connected with amphichroic change expansion head (6), amphichroic change expansion head (6) includes alloy steel portion (61) and amphichroic portion (62), fixed connection between alloy steel portion (61) and the base of taking a breath (5), the diameter of the dual-property portion (62) gradually decreases in a direction away from the alloy steel portion (61).
2. The multi-section double-variable adaptive end expansion device for metal tube product expansion joint according to claim 1, wherein: an air pump (15) is fixedly installed in the air exchange base (5), an air exchange pipe (17) is connected to the air pump (15), and the air exchange pipe (17) penetrates through the alloy steel part (61) and extends to the inner side of the dual-property part (62).
3. The multi-section double-variable adaptive end expansion device for metal tube product expansion joint according to claim 1, wherein: the utility model discloses a dual-property portion, including innermost interior elasticity gasbag (621), interior elasticity gasbag (621) surface covers has dual nature from changing layer (622), dual nature is from changing layer (622) external surface fixed connection elastic metal layer (623), interior elasticity gasbag (621) are kept away from alloy steel portion (61) one end fixedly connected with assorted alloy head (624), fixed connection between clutch alloy head (624) one end and alloy steel portion (61) is kept away from to interior elasticity gasbag (621), and elastic metal layer (623) fixed connection is between alloy steel portion (61) and alloy head (624).
4. The multi-section double-variable adaptive end expansion device for metal tube product expansion joint according to claim 3, wherein: the double-nature self-changing layer (622) is made of D3O material, and the elastic metal layer (623) is a plurality of elastic metal sheets distributed in a circular array and independent of each other.
5. The multi-section double-variable adaptive end expansion device for metal tube product expansion joint according to claim 3, wherein: a plurality of heating wires (18) distributed in an annular array are embedded in the dual self-changing layer (622), the heating wires (18) are electrically connected with a battery pack installed in the inner elastic air bag (621), a shaping heat-conducting net (19) is fixedly connected between the dual self-changing layer (622) and the elastic metal layer (623), and a plurality of heat-conducting wires are fixedly connected between the shaping heat-conducting net (19) and the heating wires (18).
6. The multi-section double-variable adaptive end expansion device for metal tube product expansion joint according to claim 1, wherein: workstation (1) upper end fixedly connected with slider (12), slider (12) upper end sliding connection has assorted slide rail (11), and fixed connection between slide rail (11) upper end and motor case (9).
7. The multi-section double-variable adaptive end expansion device for metal tube product expansion joint according to claim 1, wherein: the workpiece clamping box is characterized in that a pair of symmetrically-distributed vacuum pumps (4) are fixedly mounted in the workpiece clamping box (2), a plurality of uniformly-distributed adsorption holes are formed in the side wall of the forming tube cavity (3), and the vacuum pumps (4) are communicated with the adsorption holes through air pipes.
8. The multi-section double-variable adaptive end expansion device for metal tube product expansion joint according to claim 1, wherein: shaping lumen (3) right side is equipped with limiting plate (14) of laminating mutually with work piece clamp case (2) lateral wall, limiting plate (14) are close to work piece clamp case (2) one end and install pressure sensor, fixedly connected with second motor (13) in work piece clamp case (2), the output and limiting plate (14) one end fixed connection of second motor (13).
9. The multi-section double-variable adaptive end expansion device for metal tube product expansion joint according to claim 1, wherein: the inner end of the inner elastic air bag (621) is fixedly connected with a transversely arranged ventilation core part (63), the ventilation pipes (17) extend into the ventilation core part (63) and are communicated with each other, and a plurality of ventilation holes (16) which are uniformly distributed are drilled in the second motor (13).
10. The multi-section double-variable adaptive end expansion device for metal tube product expansion joint according to claim 1, wherein: the air pump is characterized in that a control console (20) connected with a main power supply is further mounted on the workbench (1), and the vacuum pump (4), the air cylinder (8), the first motor (10), the second motor (13), the air pump (15), the battery pack and the pressure sensor are all connected with the control console (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010580072.3A CN111702089B (en) | 2020-06-23 | 2020-06-23 | Multi-section double-variable adaptive end expansion equipment for expansion joint of metal pipe product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010580072.3A CN111702089B (en) | 2020-06-23 | 2020-06-23 | Multi-section double-variable adaptive end expansion equipment for expansion joint of metal pipe product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111702089A true CN111702089A (en) | 2020-09-25 |
| CN111702089B CN111702089B (en) | 2021-11-26 |
Family
ID=72542645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010580072.3A Active CN111702089B (en) | 2020-06-23 | 2020-06-23 | Multi-section double-variable adaptive end expansion equipment for expansion joint of metal pipe product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111702089B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040199239A1 (en) * | 2003-04-04 | 2004-10-07 | Michael Austin | Protective loading of stents |
| JP2015128786A (en) * | 2014-01-08 | 2015-07-16 | 株式会社Fts | Pipe diameter expansion device and pipe diameter expansion method |
| CN108500155A (en) * | 2018-03-28 | 2018-09-07 | 广东知识城运营服务有限公司 | A kind of efficient electric tube expander |
| CN208004638U (en) * | 2018-01-11 | 2018-10-26 | 武汉鲁台法兰机械制造有限公司 | A kind of pipe fitting production expanding device |
| CN210208355U (en) * | 2019-03-21 | 2020-03-31 | 安徽伟凯型材有限公司 | Nonrust steel pipe diffusion equipment |
| CN210614892U (en) * | 2019-09-25 | 2020-05-26 | 天津鑫泽昊钢塑复合管有限公司 | Steel-plastic composite pipe end expanding device |
| CN210730764U (en) * | 2019-09-26 | 2020-06-12 | 大连福赛汽车部件有限公司 | Flaring tool for automobile exhaust pipe orifice |
| CN210788930U (en) * | 2019-10-18 | 2020-06-19 | 天津千荣自动化技术有限公司 | Automatic pipe expander with protective structure |
-
2020
- 2020-06-23 CN CN202010580072.3A patent/CN111702089B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040199239A1 (en) * | 2003-04-04 | 2004-10-07 | Michael Austin | Protective loading of stents |
| JP2015128786A (en) * | 2014-01-08 | 2015-07-16 | 株式会社Fts | Pipe diameter expansion device and pipe diameter expansion method |
| CN208004638U (en) * | 2018-01-11 | 2018-10-26 | 武汉鲁台法兰机械制造有限公司 | A kind of pipe fitting production expanding device |
| CN108500155A (en) * | 2018-03-28 | 2018-09-07 | 广东知识城运营服务有限公司 | A kind of efficient electric tube expander |
| CN210208355U (en) * | 2019-03-21 | 2020-03-31 | 安徽伟凯型材有限公司 | Nonrust steel pipe diffusion equipment |
| CN210614892U (en) * | 2019-09-25 | 2020-05-26 | 天津鑫泽昊钢塑复合管有限公司 | Steel-plastic composite pipe end expanding device |
| CN210730764U (en) * | 2019-09-26 | 2020-06-12 | 大连福赛汽车部件有限公司 | Flaring tool for automobile exhaust pipe orifice |
| CN210788930U (en) * | 2019-10-18 | 2020-06-19 | 天津千荣自动化技术有限公司 | Automatic pipe expander with protective structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111702089B (en) | 2021-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103878928B (en) | The fixture of auto_mosaicking cylinder mold insert in mould | |
| CN111702089B (en) | Multi-section double-variable adaptive end expansion equipment for expansion joint of metal pipe product | |
| CN210011252U (en) | Injection mold convenient to unloading | |
| CN104942760B (en) | Spring machine is inserted for preparing the stretch tight automatic rotary cutting of film frame of outstanding film double glazing | |
| CN216182148U (en) | Supercritical mould pressing foaming equipment | |
| BR0210647A (en) | Method and apparatus for shaping and curing a vehicle wheel tire | |
| CN214419366U (en) | Automatic stripper for medical rubber gloves | |
| CN213383081U (en) | Mask forming machine | |
| CN112810113B (en) | Blow molding mold and blow molding process | |
| CN211564266U (en) | Positioning tool for die machining | |
| CN211440792U (en) | Vulcanizer for rubber soft joint | |
| CN113442348A (en) | Vulcanization mold for air spring leather bag | |
| CN210026014U (en) | Compression molding machine for melamine tableware | |
| CN210477629U (en) | Mold for retainer capable of preventing injection molding blockage | |
| CN203030771U (en) | Molding producing processing device of propelling rod | |
| CN207403117U (en) | A kind of demolding structure of plastic mould | |
| CN211440894U (en) | Fixing equipment for hardware mould | |
| CN110328789A (en) | A kind of notebook keycap plastic mould cooler | |
| CN215550249U (en) | Vulcanization mold for air spring leather bag | |
| CN210670501U (en) | Withstand voltage type earphone earmuff mould | |
| CN213789878U (en) | Thermal correction machine | |
| CN218489019U (en) | High-efficient shaping injection molding machine | |
| CN218640113U (en) | UV curing module with improved sealing mechanism | |
| CN202439227U (en) | Forked end setting machine for intrauterine device placing tube | |
| CN218615539U (en) | SMC combined material car roof shaping is with school shape device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230104 Address after: Room 305, Floor 3, Urban Energy Empowerment Center, No. 817 Bingsheng Road, Guangrao Economic Development Zone, Guangrao County, Dongying City, Shandong Province, 257000 Patentee after: Dongying Jiamai E-commerce Co.,Ltd. Address before: 225300 building 7, north of Chuangye Avenue, Gaogang Science Park, Taizhou City, Jiangsu Province Patentee before: Taizhou Hongcai Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230612 Address after: Room 702, Building A1, Longgang Science and Technology Park, No.1 Hengyuan Road, Nanjing Economic and Technological Development Zone, Jiangsu Province, 211899 Patentee after: Nanjing Yiyi Technology Co.,Ltd. Address before: Room 305, Floor 3, Urban Energy Empowerment Center, No. 817 Bingsheng Road, Guangrao Economic Development Zone, Guangrao County, Dongying City, Shandong Province, 257000 Patentee before: Dongying Jiamai E-commerce Co.,Ltd. |
|
| TR01 | Transfer of patent right |