CN115255166B

CN115255166B - Hydraulic pipe end forming machine with heat dissipation function

Info

Publication number: CN115255166B
Application number: CN202211214839.6A
Authority: CN
Inventors: 汤亚勇; 郭杰; 贾文英; 张金香
Original assignee: Suzhou Rongna Automation Technology Co ltd
Current assignee: Suzhou Rongna Automation Technology Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2022-12-09
Anticipated expiration: 2042-09-30
Also published as: CN115255166A

Abstract

The invention discloses a hydraulic pipe end forming machine with a heat dissipation function, which relates to the field of pipe end forming machines and comprises a forming head assembly and a supporting plate, wherein the supporting plate can support one end of a pipe, the forming head assembly can move into the other end of the pipe to expand the end part of the pipe, the forming head assembly comprises a pre-expansion piece, a slotting piece, a flat groove piece and a re-expansion piece, and the pre-expansion piece, the slotting piece, the flat groove piece and the re-expansion piece can sequentially enter one end of the pipe. Can prevent once with pipe fitting extrusion, the pressure that leads to the pipe fitting to bear leads to crooked and excessive deformation too greatly, has improved the shaping effect of pipe fitting, simultaneously through the extrusion to the pipe fitting many times, can effectively reduce the regional calorific capacity of extrusion, prevents the excessive loss of former, prolongs former's life, reduces calorific capacity and also can improve the shaping quality of pipe fitting.

Description

Hydraulic pipe end forming machine with heat dissipation function

Technical Field

The invention relates to the field of pipe end forming machines, in particular to a hydraulic pipe end forming machine with a heat dissipation function.

Background

The pipe end forming machine is a processing and forming device for expanding, reducing and shrinking a pipe fitting under normal conditions, and is controlled by an integrated touch display screen, a pipe or steel is manually fed into a clamping die to be clamped, a positioning oil cylinder pushes a positioning body to automatically position a workpiece, the positioned workpiece pushes the clamping die to be clamped through a clamping oil cylinder, a stamping oil cylinder pushes a sliding block to push a punch to perform stamping forming, and after the work is finished, each oil cylinder resets.

The Chinese patent application CN108435858A discloses a pipe end forming machine, which comprises a rack and a control device, wherein a first forming device is arranged on the rack, the first forming device comprises a first support, a pushing mechanism, a transposition mechanism and a clamping mechanism, the first support is fixed on the rack, the pushing mechanism is arranged at one end of the first support, the clamping mechanism is arranged on the side surface of the pushing mechanism and connected with the first support, the transposition mechanism is arranged between the pushing mechanism and the clamping mechanism, a punch shaft is arranged in the transposition mechanism, one end of the punch shaft is connected with the pushing mechanism, the other end of the punch shaft is connected with a punch, a feeding device is arranged behind the clamping mechanism and fixed on the rack, the control device is connected with the pushing mechanism, the transposition mechanism and the clamping mechanism, and the control device is arranged on the rack. The machine has high automation degree and high processing efficiency, realizes the automatic replacement of the die, and can process pipe ends in various shapes.

The above patents and prior art also suffer from the following drawbacks:

when expanding the pipe end and increasing the diameter, the existing equipment once extrudes the pipe end, the extrusion force that the pipe fitting received is great, and the pipe fitting is buckled easily, and when once expanding the pipe fitting and increasing the diameter, the calorific capacity at extrusion position is great, influences the life of former and the shaping quality of steel pipe simultaneously.

Therefore, the application provides a hydraulic pipe end forming machine with a heat dissipation function to meet the requirements.

Disclosure of Invention

An object of this application is to provide a hydraulic pressure pipe end make-up machine with heat dissipation function, can prevent once with pipe fitting extrusion, the pressure that leads to the pipe fitting to bear leads to crooked and excessive deformation too greatly, the shaping effect of pipe fitting has been improved, simultaneously through the extrusion to the pipe fitting many times, can effectively reduce the regional calorific capacity of extrusion, prevent the excessive loss of former, the life of extension former, reduce calorific capacity and also can improve the shaping quality of pipe fitting.

In order to achieve the above purpose, the present application provides the following technical solutions: a hydraulic pipe end forming machine with a heat dissipation function comprises a forming head assembly and a pressing plate, wherein the pressing plate can press one end of a pipe against the forming head assembly, and the forming head assembly can move into the other end of the pipe to expand the end of the pipe;

the forming head assembly comprises a pre-expansion piece, a slotting piece, a flat-slot piece and a re-expansion piece, wherein the pre-expansion piece, the slotting piece, the flat-slot piece and the re-expansion piece can enter one end of a pipe in sequence; the pre-expansion piece enters one end of the pipe fitting to enable the diameter of the pipe fitting to be expanded to be consistent with the diameter of the pre-expansion piece; the end, entering the pipe fitting, of the slotted piece can extrude the pipe fitting, the pipe wall is extruded outwards to form a plurality of inner grooves, the pipe fitting is positioned between two adjacent inner grooves to form inner bulges, and the flat slotted piece can rotate in the process of entering the end of the pipe fitting to extrude the inner bulges of the pipe fitting outwards; the re-expansion element entering the end of the tubular member can expand the diameter of the tubular member to conform to the diameter of the re-expansion element.

Preferably, the forming head assembly further comprises an oil cooling assembly, and the oil cooling assembly comprises an oil injection hole, an oil blocking air bag and an oil receiving bottom shell; the oil spray holes are arranged in a plurality and are uniformly formed in the pre-expansion piece, and cooling oil can be sprayed out of the oil spray holes; the oil blocking air bag can move along with the pre-expansion piece, the oil blocking air bag is in a contraction state when entering the pipe fitting, and the oil blocking air bag is in an expansion state after entering the pipe fitting; when the pre-expansion piece is moved out of the pipe fitting, the oil blocking air bag in an expanded state can scrape cooling oil out of the pipe fitting; the oil receiving bottom shell can receive cooling oil scraped by the oil blocking air bag.

Preferably, the molding head assembly further comprises a moving head, the pre-expansion piece comprises an expansion head, and the expansion head is fixedly mounted at one end of the moving head close to the abutting plate; the slotting part comprises a plurality of slotting strips, the slotting strips are uniformly and fixedly installed on the outer wall of the moving head, and the slotting strips are positioned on one side of the expansion head, which is far away from the abutting plate; the slotted piece comprises a rotating ring and a slotted block, the rotating ring is rotatably sleeved on the moving head, the slotted block is fixedly arranged on the rotating ring, and the rotating ring is positioned on one side of the slotted strip, which is far away from the expansion head; the rotating ring can rotate on the moving head through a driving assembly; the re-expansion piece comprises an expansion ring which is fixedly sleeved on the moving head, and the expansion ring is positioned on one side, far away from the grooving strip, of the flat groove block.

Preferably, drive assembly includes the actuating lever, the actuating lever can rotate, gear fixed mounting be in the actuating lever is close to the one end of slotted link piece, the fixed cup of ring gear is in on the rotating ring, just the gear with the ring gear meshes mutually.

Preferably, an air pipe is arranged in the oil blocking air bag and penetrates through the oil blocking air bag and extends outwards, a plurality of elastic ropes are fixedly mounted on the air pipe, and the other ends of the elastic ropes are fixedly mounted on the inner wall of the oil blocking air bag.

Preferably, the expansion head is arranged in a conical shape; one end of the slotted strip close to the expansion head is arranged in an arc shape; the flat groove block is arranged in a semi-cone shape.

Preferably, the supporting plate is fixedly installed on a processing table, a hydraulic press is fixedly installed on the processing table, a moving plate is fixedly installed at the output end of the hydraulic press, and the moving head is fixedly installed on the moving plate.

Preferably, the processing bench is provided with two centre gripping subassemblies, two centre gripping subassembly symmetry sets up at the processing bench, the centre gripping subassembly includes cylinder and grip block, processing bench fixed mounting has the backup pad, cylinder fixed mounting is in the backup pad, the grip block fixed mounting be in the output of cylinder, just the grip block is the arc setting.

Preferably, a shell is fixedly mounted on the processing table, the hydraulic machine and the forming head assembly are both arranged in the shell, one end, close to the abutting plate, of the shell is provided with an opening, and the oil receiving bottom shell is fixedly mounted at the opening end of the shell.

Preferably, connect the drain pan to keep away from the one end fixed mounting of casing has the limiting plate, seted up on the limiting plate and supported the breach, the bottom that supports the breach is the arc setting, fixed mounting has a plurality of gag lever posts between casing and the limiting plate, the gag lever post run through the movable plate and with movable plate sliding fit.

In conclusion, the technical effects and advantages of the invention are as follows:

1. in the invention, a pre-expansion piece, a slotted piece, a flat slot piece and a re-expansion piece are used; can prevent once with pipe fitting extrusion, the pressure that leads to the pipe fitting to bear leads to crooked and excessive deformation too greatly, the shaping effect of pipe fitting has been improved, simultaneously through the extrusion to the pipe fitting many times, can effectively reduce the calorific capacity in extrusion region, prevent the excessive loss of former, the life of extension former, reduce calorific capacity and also can improve the shaping quality of pipe fitting, and it is inseparabler to connect between the many times extrusion process of pipe fitting, the interval is short between the process, machining efficiency can not be reduced by a wide margin.

2. According to the invention, the oil spray hole sprays cooling oil, when the forming head assembly expands the pipeline, the cooling oil lubricates the pipeline and the forming head assembly, the heating amount is reduced, meanwhile, the heat can be taken away, the heat dissipation effect is good, when the forming head assembly moves out of the pipeline, the expansion head moves the oil blocking air bag to move out of the pipeline, the oil blocking air bag in the expansion state scrapes out the cooling oil in the pipeline, and the oil receiving bottom shell receives the scraped cooling oil, so that the recovery is convenient.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is also possible for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2 in accordance with the present invention;

FIG. 4 is a schematic view of the present invention with the housing removed;

FIG. 5 is a schematic view of a former head assembly according to the present invention;

FIG. 6 is a schematic view of the construction of the former assembly of the present invention;

FIG. 7 is a schematic view of the construction of the former assembly of the present invention;

FIG. 8 is a schematic view of the construction of the former head assembly of the present invention;

fig. 9 is an enlarged view of portion B of fig. 8 according to the present invention.

In the figure: 1. a former head assembly; 2. a resisting plate; 3. a pre-expander; 31. an expansion head; 4. slotting parts; 41. grooving; 5. a pan member; 51. a rotating ring; 52. a flat groove block; 6. a re-expanding member; 61. an expansion ring; 7. an oil-cooled component; 71. an oil spray hole; 72. an oil blocking air bag; 73. an oil receiving bottom shell; 8. a clamping assembly; 81. a cylinder; 82. a clamping plate; 9. a drive assembly; 91. a drive rod; 92. a gear; 93. a ring gear; 10. an air tube; 11. an elastic cord; 13. a processing table; 14. a hydraulic press; 15. moving the plate; 16. a moving head; 17. a housing; 18. a limiting plate; 19. a limiting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): referring to fig. 1-4, a hydraulic pipe end forming machine with heat dissipation function includes a forming head assembly 1 and a pressing plate 2, where the pressing plate 2 can press one end of a pipe against, and the forming head assembly 1 can move into the other end of the pipe to expand the end of the pipe;

the forming head assembly 1 comprises a pre-expansion piece 3, a slotting piece 4, a flat slot piece 5 and a re-expansion piece 6, wherein the pre-expansion piece 3, the slotting piece 4, the flat slot piece 5 and the re-expansion piece 6 can enter one end of a pipe in sequence; the pre-expansion piece 3 enters one end of the pipe fitting to expand the diameter of the pipe fitting to be consistent with the diameter of the pre-expansion piece 3; the grooving piece 4 can extrude the pipe fitting when entering one end of the pipe fitting, the pipe wall is extruded outwards to form a plurality of inner grooves, the pipe fitting is positioned between two adjacent inner grooves to form inner bulges, and the flat groove piece 5 can rotate when entering one end of the pipe fitting to extrude the inner bulges of the pipe fitting outwards; the entry of the re-expander 6 into one end of the tubular member enables the diameter of the tubular member to be expanded to conform to the diameter of the re-expander 6.

The butt plate 2 butts one end of a pipe, the forming head assembly 1 enters the other end of the pipe to expand the pipe, the pre-expanding piece 3 enters the pipe firstly, the pre-expanding piece 3 expands the diameter of the pipe to be consistent with the diameter of the pre-expanding piece 3, then the slotted piece 4 enters the pipe, a plurality of inner grooves are extruded on the inner wall of the pipe, the pipe is located between two adjacent inner grooves to form an inner bulge, namely, the end part of the pipe is not extruded by the slotted piece 4, then the flat groove piece 5 enters the pipe, the flat groove piece 5 rotates when entering the pipe, the flat groove piece 5 rotates to bulge the inner part of the end part of the pipe, namely, the part which is not extruded by the slotted piece 4 is extruded outwards, the diameter of the pipe is increased, finally, the re-expanding piece 6 enters the pipe, the diameter of the pipe is expanded again, and the pipe is leveled.

Through the pre-expander 3, the slotted member 4, the flat slotted member 5 and the re-expander 6; can prevent once with pipe fitting extrusion, the pressure that leads to the pipe fitting to bear leads to crooked and excessive deformation too greatly, the shaping effect of pipe fitting has been improved, simultaneously through the extrusion to the pipe fitting many times, can effectively reduce the regional calorific capacity of extrusion, prevent the excessive loss of former, the life of extension former, reduce calorific capacity and also can improve the shaping quality of pipe fitting, it is inseparabler to connect between the many times extrusion process of pipe fitting, the interval is short between the process, machining efficiency can not be reduced by a wide margin.

Further, referring to fig. 1, 2, 3, 8 and 9, the former head assembly 1 further includes an oil cooling assembly 7, and the oil cooling assembly 7 includes an oil injection hole 71, an oil blocking air bag 72 and an oil receiving bottom case 73; the oil spray holes 71 are arranged in a plurality and are uniformly formed in the pre-expanding piece 3, and cooling oil can be sprayed out of the oil spray holes 71; the oil blocking air bag 72 can move along with the pre-expansion piece 3, the oil blocking air bag 72 is in a contraction state when entering the pipe fitting, and the oil blocking air bag 72 is in an expansion state after entering the pipe fitting; when the pre-expansion piece 3 is removed from the pipe fitting, the oil blocking air bag 72 in an expansion state can scrape cooling oil in the pipe fitting; the oil receiver 73 can receive the cooling oil scraped by the oil baffle bladder 72.

Oil blocking air bag 72 is installed on pre-expansion piece 3, before former die assembly 1 gets into the pipeline, oil blocking air bag 72 is the contraction state, it is the inflation state to aerify after oil blocking air bag 72 gets into the pipeline, oil blocking air bag 72 plugs the pipeline, nozzle hole 71 blowout coolant oil, when former die assembly 1 expands the pipeline, coolant oil lubricates pipeline and former die assembly 1, reduce calorific capacity, can take away the heat simultaneously, the radiating effect is good, when former die assembly 1 shifts out from the pipeline, pre-expansion piece 3 drives oil blocking air bag 72 and shifts out from the pipeline, the oil blocking air bag 72 of inflation state scrapes out the coolant oil in the pipeline, connect oil pan 73 to accept the coolant oil of scraping, convenient the recovery.

Further, referring to fig. 1, 3, 5, 6 and 7, the molding head assembly 1 further includes a moving head 16, the pre-expansion member 3 includes an expansion head 31, and the expansion head 31 is fixedly mounted at one end of the moving head 16 close to the butt plate 2; the grooving part 4 comprises a plurality of grooving strips 41, the grooving strips 41 are uniformly and fixedly arranged on the outer wall of the moving head 16, and the grooving strips 41 are positioned on one side of the expansion head 31 far away from the abutting plate 2; the flat groove piece 5 comprises a rotating ring 51 and a flat groove block 52, the rotating ring 51 is rotatably sleeved on the moving head 16, the flat groove block 52 is fixedly arranged on the rotating ring 51, and the rotating ring 51 is positioned on one side of the grooving bar 41 far away from the expansion head 31; the rotating ring 51 can rotate on the moving head 16 by the driving assembly 9; the re-expanding member 6 comprises an expanding ring 61, the expanding ring 61 is fixedly attached to the moving head 16, and the expanding ring 61 is located on the side of the flat groove block 52 away from the grooved strip 41.

The moving head 16 moves to drive the expansion head 31, the slotted bars 41, the flat slot blocks 52 and the expansion ring 61 to sequentially enter the pipeline, the diameter of the expansion head 31 is greatly larger than the diameter of the pipe, the expansion head 31 enters the pipe to enable the diameter of the pipe to be expanded in a small range, the slotted bars 41 are arranged on the moving head 16 in a circumferential mode, the distance between the farthest ends of the two symmetrical slotted bars 41 is greatly larger than the diameter of the pipe, the slotted bars 41 can enter the pipe to enable the pipe to be extruded into a deeper groove, the pipe is subjected to interval slotting through the slotted bars 41 and cannot be greatly increased in stress, excessive deformation cannot be easily generated, the force applied to the pipe is smaller, the pipe is not easy to bend when being extruded, the pipe is good in forming effect, the part, which is not extruded by the slotted bars 41, in the pipe is outwards extruded through the flat slot blocks 52, the diameter of the pipe is greatly expanded, the pipe is deformed by gradual extrusion, the pipe is not easy to be broken due to excessive stress, the pipe is expanded again in a small range by the expansion ring 61, the small range of the diameter of the pipe, the flatness and the unevenness cannot be caused by gradual extrusion of the slotted blocks 52.

Further, referring to fig. 3 and 7, the driving assembly 9 includes a driving rod 91, the driving rod 91 is capable of rotating, a gear 92 is fixedly installed at one end of the driving rod 91 close to the flat slot block 52, a gear ring 93 is fixedly sleeved on the rotating ring 51, and the gear 92 is meshed with the gear ring 93.

One end fixed mounting of removal head 16 has driving motor, driving motor passes through belt transmission and connects on actuating lever 91, driving motor can drive actuating lever 91 through belt transmission when rotating and rotate, belt transmission includes two belt pulleys and belt, two belt pulleys are installed respectively on driving motor's output and actuating lever 91, the belt is connected on two belt pulleys, start driving motor, driving motor drives the belt pulley and rotates, the belt pulley drives another belt pulley through the belt and rotates, another belt pulley drives actuating lever 91 and rotates, actuating lever 91 drives gear 92 and rotates, gear 92 drives ring gear 93 and rotates, ring gear 93 drives swivel becket 51 and rotates, swivel becket 51 drives plain groove piece 52 and rotates, make plain groove piece 52 extrude the pipeline, actuating lever 91 runs through expansion ring 61 and rotates with expansion ring 61 and is connected.

Further, referring to fig. 8 and 9, an air tube 10 is disposed in the oil blocking air bag 72, the air tube 10 passes through the oil blocking air bag 72 and extends outward, a plurality of elastic ropes 11 are fixedly mounted on the air tube 10, and the other ends of the elastic ropes 11 are fixedly mounted on the inner wall of the oil blocking air bag 72.

One end fixed mounting of removal head 16 has the air pump, and trachea 10 runs through removal head 16 and connects on the air pump, and the air pump can let in the air in to keeping off oily gasbag 72 through trachea 10, makes to keep off oily gasbag 72 and is in the inflation state, can take out the air that keeps off in oily gasbag 72 through trachea 10, makes to keep off oily gasbag 72 and is in the contraction state, and elastic rope 11 makes to keep off oily gasbag 72 shrink more fast.

Keep off oily gasbag 72 and be the double-deck setting, keep off oily gasbag 72 and include skin and inlayer, and outer material is the nylon material, and the inlayer material is the rubber material, makes to keep off oily gasbag 72 and has better wearability and leakproofness.

Further, referring to fig. 5, the expanding head 31 is provided in a conical shape; one end of the slotted bar 41 close to the expansion head 31 is arranged in an arc shape; the flat groove block 52 is in a semi-cone shape, and one end of the expansion ring 61 corresponding to the flat groove block is in an arc shape.

The ends of the expansion head 31, the grooving bars 41 and the grooving blocks 52 which are firstly contacted with the pipe are all arranged on an inclined plane, so that the pipe deforms under the pressure of the inclined plane.

Further, referring to fig. 4 and 8, the resisting plate 2 is fixedly mounted on the processing table 13, the hydraulic press 14 is fixedly mounted on the processing table 13, the moving plate 15 is fixedly mounted at the output end of the hydraulic press 14, and the moving head 16 is fixedly mounted on the moving plate 15.

The moving head 16 is fixedly mounted on the moving plate 15 through the supporting columns, that is, one end of each of the supporting columns is fixedly mounted on the moving plate 15, and the other end of each of the supporting columns is fixedly mounted on the moving head 16.

After the hydraulic machine 14 is started, the moving plate 15 can be pushed to move, the moving plate 15 pushes the moving head 16 to move through the supporting column, and the moving head 16 drives the forming head assembly 1 to push into the pipe to expand the pipe.

Further, referring to fig. 1 and 4, two clamping assemblies 8 are arranged on the processing table 13, the two clamping assemblies 8 are symmetrically arranged on the processing table 13, each clamping assembly 8 comprises an air cylinder 81 and a clamping plate 82, a supporting plate is fixedly arranged on the processing table 13, the air cylinder 81 is fixedly arranged on the supporting plate, the clamping plate 82 is fixedly arranged at the output end of the air cylinder 81, and the clamping plate 82 is arranged in an arc shape.

The cylinder 81 pushes the clamping plates 82 to move, so that the two clamping plates 82 clamp the pipeline, the pipeline is more stable, the pipeline is positioned, and the processing is convenient.

Further, referring to fig. 1, fig. 2 and fig. 4, a housing 17 is further fixedly mounted on the processing table 13, the hydraulic machine 14 and the forming head assembly 1 are both disposed in the housing 17, one end of the housing 17 close to the abutting plate 2 is open, and the oil receiving bottom shell 73 is fixedly mounted at the open end of the housing 17.

The casing 17 can shield the device main body, and safety is improved.

Further, referring to fig. 2 and 4, a limiting plate 18 is fixedly mounted at one end of the oil receiving bottom shell 73, which is far away from the casing 17, a supporting notch is formed in the limiting plate 18, the bottom of the supporting notch is arranged in an arc shape, a plurality of limiting rods 19 are fixedly mounted between the casing 17 and the limiting plate 18, and the limiting rods 19 penetrate through the moving plate 15 and are in sliding fit with the moving plate 15.

The support can be added to the moving process of the moving plate 15, so that the moving plate 15 is more stable and is not easy to shake.

The working principle of the invention is as follows: placing a pipe between a supporting plate 2 and a forming head assembly 1, moving the forming head assembly 1 towards the pipe, enabling one end of the pipe to abut against the supporting plate 2, enabling the forming head assembly 1 to enter the other end of the pipe, enabling a moving head 16 to move, enabling the pipe to be in contact with a conical surface of an expansion head 31 firstly, enabling the pipe to be gradually expanded to be consistent with the maximum diameter of the expansion head 31 under the extrusion of the conical surface, enabling a grooving strip 41 to enter the pipe, enabling the wall of the pipe to be outwards extruded to form an inner groove matched with the grooving strip 41, enabling the pipe between two adjacent inner grooves to form an inner bulge, enabling a flat groove piece 5 to enter the pipe, enabling a driving rod 91 to be driven to rotate through a power source, enabling the driving rod 91 to drive a gear 92 to rotate, enabling the gear 92 to drive a gear ring 93 to rotate, enabling the gear ring 93 to drive a rotating ring 51 to rotate on the moving head 16, enabling a flat groove block 52 to rotate when the pipe is extruded to be inwards extruded, enabling the flat groove piece 5 to abut against the inner bulge of the pipe and extrude the bulge outwards, enabling the inner bulge of the pipe to be evenly extruded to be consistent with the inner bulge of the inner groove, enabling the pipe to be expanded again, enabling the pipe to pass through an expansion piece 3 and the expansion head 6; the pipe fitting extrusion molding device has the advantages that the pipe fitting can be prevented from being extruded and molded at one time, bending and excessive deformation caused by too large pressure born by the pipe fitting can be prevented, the molding effect of the pipe fitting is improved, meanwhile, through multiple times of extrusion molding on the pipe fitting, the heat productivity of an extrusion area can be effectively reduced, the excessive loss of molding equipment is prevented, the service life of the molding equipment is prolonged, the heat productivity is reduced, the molding quality of the pipe fitting can also be improved, the connection among multiple extrusion molding processes of the pipe fitting is tighter, the interval between the processes is short, and the processing efficiency cannot be greatly reduced;

oil blocking air bag 72 is installed on expansion head 31, before former die head subassembly 1 gets into the pipeline, oil blocking air bag 72 is the contraction state, it is the inflation state to aerify after oil blocking air bag 72 gets into the pipeline, oil blocking air bag 72 plugs the pipeline, oil spout 71 blowout coolant oil, when former die head subassembly 1 expands the pipeline, the coolant oil lubricates pipeline and former die head subassembly 1, reduce calorific capacity, can take away the heat simultaneously, the radiating effect is good, when former die head subassembly 1 shifts out from the pipeline, expansion head 31 drives oil blocking air bag 72 and shifts out from the pipeline, the oil blocking air bag 72 of expansion state scrapes out the coolant oil in the pipeline, oil receiving bottom shell 73 accepts the coolant oil of scraping, convenient recovery.

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 modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a hydraulic pressure pipe end make-up machine with heat dissipation function, includes former head subassembly (1) and supports board (2), its characterized in that: the pressing plate (2) can press one end of the pipe against the pressing plate, and the forming head assembly (1) can move into the other end of the pipe to expand the end of the pipe;

the forming head assembly (1) comprises a pre-expansion piece (3), a slotting piece (4), a flat-slotted piece (5) and a re-expansion piece (6), wherein the pre-expansion piece (3), the slotting piece (4), the flat-slotted piece (5) and the re-expansion piece (6) can enter one end of a pipe in sequence; the pre-expansion piece (3) enters one end of the pipe fitting to expand the diameter of the pipe fitting to be consistent with the diameter of the pre-expansion piece (3); the grooving piece (4) can extrude the pipe fitting when entering one end of the pipe fitting, the pipe wall is extruded outwards to form a plurality of inner grooves, the pipe fitting is positioned between two adjacent inner grooves to form inner bulges, and the flat groove piece (5) can rotate when entering one end of the pipe fitting to extrude the inner bulges of the pipe fitting outwards; the entrance of the re-expansion element (6) into one end of the tubular element enables the diameter of the tubular element to expand to be consistent with the diameter of the re-expansion element (6).

2. The hydraulic pipe end forming machine with a heat dissipation function according to claim 1, wherein: the forming head assembly (1) further comprises an oil cooling assembly (7), wherein the oil cooling assembly (7) comprises an oil injection hole (71), an oil blocking air bag (72) and an oil receiving bottom shell (73); the oil spray holes (71) are arranged in a plurality and are uniformly formed in the pre-expanding piece (3), and cooling oil can be sprayed out of the oil spray holes (71); the oil blocking air bag (72) can move along with the pre-expansion piece (3), the oil blocking air bag (72) is in a contraction state when entering the pipe fitting, and the oil blocking air bag (72) is in an expansion state after entering the pipe fitting; when the pre-expansion piece (3) is removed from the pipe fitting, the oil blocking air bag (72) in an expanded state can scrape cooling oil out of the pipe fitting; the oil receiving bottom shell (73) can receive the cooling oil scraped by the oil blocking air bag (72).

3. The hydraulic pipe end forming machine with a heat dissipation function according to claim 2, wherein: the forming head assembly (1) further comprises a moving head (16), the pre-expansion piece (3) comprises an expansion head (31), and the expansion head (31) is fixedly installed at one end, close to the abutting plate (2), of the moving head (16); the slotting part (4) comprises a plurality of slotting strips (41), the slotting strips (41) are uniformly and fixedly installed on the outer wall of the moving head (16), and the slotting strips (41) are positioned on one side, away from the abutting plate (2), of the expansion head (31); the slotted piece (5) comprises a rotating ring (51) and a slotted block (52), the rotating ring (51) is rotatably sleeved on the moving head (16), the slotted block (52) is fixedly installed on the rotating ring (51), and the rotating ring (51) is positioned on one side of the slotted strip (41) far away from the expansion head (31); the rotating ring (51) can rotate on the moving head (16) through a driving assembly (9); the re-expanding piece (6) comprises an expanding ring (61), the expanding ring (61) is fixedly sleeved on the moving head (16), and the expanding ring (61) is positioned on one side, far away from the grooving strip (41), of the flat groove block (52).

4. The hydraulic pipe end forming machine with a heat dissipation function according to claim 3, wherein: drive assembly (9) are including actuating lever (91), gear (92) and ring gear (93), actuating lever (91) can rotate, gear (92) fixed mounting be in actuating lever (91) is close to the one end of slotted block (52), ring gear (93) are fixed to be cup jointed on swivel becket (51), just gear (92) with ring gear (93) mesh mutually.

5. The hydraulic pipe end forming machine with a heat dissipation function according to claim 2, wherein: be provided with trachea (10) in fender oil gasbag (72), trachea (10) pass keep off oil gasbag (72) and outside extension, fixed mounting has a plurality of elasticity ropes (11) on trachea (10), the other end fixed mounting of elasticity rope (11) be in keep off on the inner wall of oil gasbag (72).

6. The hydraulic pipe end forming machine with a heat dissipation function according to claim 3, wherein: the expansion head (31) is arranged in a conical shape; one end of the slotted bar (41) close to the expansion head (31) is arranged in an arc shape; the flat groove block (52) is arranged in a semi-cone shape.

7. The hydraulic pipe end forming machine with a heat dissipation function according to claim 3, wherein: the pressing plate (2) is fixedly arranged on a processing table (13), a hydraulic machine (14) is fixedly arranged on the processing table (13), a moving plate (15) is fixedly arranged at the output end of the hydraulic machine (14), and the moving head (16) is fixedly arranged on the moving plate (15).

8. The hydraulic pipe end forming machine with a heat dissipation function according to claim 7, wherein: processing is provided with two centre gripping subassemblies (8) on platform (13), two centre gripping subassembly (8) symmetry sets up on processing platform (13), centre gripping subassembly (8) include cylinder (81) and grip block (82), fixed mounting has the backup pad on processing platform (13), cylinder (81) fixed mounting is in the backup pad, grip block (82) fixed mounting be in the output of cylinder (81), just grip block (82) are the arc setting.

9. The hydraulic pipe end forming machine with a heat dissipation function according to claim 7, wherein: the processing table (13) is further fixedly provided with a shell (17), the hydraulic machine (14) and the forming head assembly (1) are arranged in the shell (17), one end, close to the abutting plate (2), of the shell (17) is provided with an opening, and the oil receiving bottom shell (73) is fixedly arranged at the opening end of the shell (17).

10. The hydraulic pipe end forming machine with a heat dissipation function according to claim 9, wherein: connect drain pan (73) to keep away from the one end fixed mounting of casing (17) has limiting plate (18), seted up on limiting plate (18) and supported the breach, the bottom that supports the breach sets up for the arc, fixed mounting has a plurality of gag lever posts (19) between casing (17) and limiting plate (18), gag lever post (19) run through movable plate (15) and with movable plate (15) sliding fit.