CN108405737A - Sizing mill - Google Patents
Sizing mill Download PDFInfo
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- CN108405737A CN108405737A CN201810234592.1A CN201810234592A CN108405737A CN 108405737 A CN108405737 A CN 108405737A CN 201810234592 A CN201810234592 A CN 201810234592A CN 108405737 A CN108405737 A CN 108405737A
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- Prior art keywords
- flaring
- die
- oil
- plate body
- core
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- 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
- B21D41/026—Enlarging by means of mandrels
- B21D41/028—Enlarging by means of mandrels expandable mandrels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The invention discloses a kind of sizing mills, including fuel tank and plug die, plug die includes rise core, flaring die and the reducing die that is sheathed on flaring die, the core that rises has the flaring driving portion being inserted into flaring die, flaring die is made of multiple flaring mold sections circumferentially, and the flaring driving portion is eight prismatic structures, and flaring driving portion has eight drive surfaces circumferentially, it is plane that the flaring mold section, which has the mating surface contacted with drive surface, drive surface and mating surface,.The sizing mill of the present invention, the core that rises is changed to eight prismatic structures, the contact area between flaring die can be increased, to reduce the abrasion of flaring die and the core that rises, extend service life, and due to there is no the phenomenon that point contact between the driving for the core that rises and the mating surface of flaring die, so as to improve the machining accuracy of pipe fitting, the yields of pipe fitting is improved.
Description
Technical field
The invention belongs to metal machining equipment technical fields, specifically, the present invention relates to a kind of sizing mills.
Background technology
In automobile exhaust pipe production process, flaring sizing is one of important process, for this reason, it may be necessary to use sizing mill.
On sizing mill, mold used by sizing exhaust pipe pipe end is plug die.Existing plug die can only be simply flared
Sizing is more valve structures since flaring die has the core that rises, and product after flaring is affected there is circularity dimensional accuracy is poor
Product quality, the tube outer diameter size after processing is difficult to accurately ensure, while plug die is easy to wear, and service life is short.
The cylinder structure of existing sizing mill, use is all knockdown, and oil cylinder layout is single.Combined oil cylinder itself is tied
Structure is complicated, and when making is comparatively laborious, and processing cost is also higher than common oil cylinder.Although fabricated structure reduces oil cylinder whole empty
Between, but the effective heat dissipation area of cylinder block is decreased simultaneously, easily there is phenomena such as fever is fast, heat dissipation is slow, high temperature is creeped in oil cylinder.
Prolonged high temperature can also accelerate the aging of sealing ring simultaneously, cause oil cylinder on service life will be well below general expression structure
Oil cylinder.The excessively high stability that can also reduce oil cylinder of temperature, causes oil cylinder creeping phenomenon occur.Complicated structure is replaced in repair
Sealing element is also very inconvenient.
Existing sizing mill, for the fuel tank used for the body structure of monoblock type, both sides can only pass through both sides with window is repaired
Repairing window place under repair the part of box house, extremely limited due to repairing window, repairing the part of box house also can be by
To limitation.And fuel tank internal does not have deflector, hydraulic oil that can not fully be recycled in fuel tank, the impurity of case internal deposition also without
Method is cleaned out.When the fluid for carrying high temperature in hydraulic system flows into babinet, since high-temperature oil liquid can not be in box house
Circulating cooling is carried out, is sucked again by oil pump, reenters hydraulic system, quick heating, temperature are high when oil pressure unit being caused to run,
Lead to problems such as the hydraulic actuating mechanisms such as oil cylinder occur fluctuation of service, oil leak, sealing element loss it is fast.
Invention content
The present invention is directed at least solve one of the technical problems existing in the prior art.Determine for this purpose, the present invention provides one kind
Diameter machine, it is therefore an objective to improve pipe fitting machining accuracy.
To achieve the goals above, the technical solution that the present invention takes is：Sizing mill, including fuel tank and plug die, sizing
Mould includes rise core, flaring die and the reducing die that is sheathed on flaring die, and the core that rises has the flaring driving portion being inserted into flaring die, expands
Mouth mold is made of multiple flaring mold sections circumferentially, and the flaring driving portion is eight prismatic structures, flaring driving portion tool
There are eight drive surfaces circumferentially, the flaring mold section that there is the mating surface contacted with drive surface, drive surface and mating surface
For plane.
The drive surface is that the width of tapered plane and drive surface is to be gradually reduced to the other end since one end, drive surface
Vertical range between the maximum one end of width and the axis of the core that rises is less than one end of the width minimum of drive surface and the core that rises
Axis between vertical range.
The sizing mill further includes necking oil cylinder and connect with the core that rises and moved in an axial direction for controlling the core that rises
Dynamic flaring oil cylinder, the plug die further include the pressing sleeve being sheathed on the reducing die, and necking oil cylinder is for controlling pressing sleeve edge
Axially moved.
The flaring oil cylinder is between the plug die and the necking oil cylinder, flaring oil cylinder, plug die and necking oil
Cylinder is coaxial arrangement.
The fuel tank includes the first upper cover plate and second for storing the main box of hydraulic oil, being set on main box
Cover board and the guiding device for being set to inside main box and making hydraulic oil to be flowed by setting path.
First upper cover plate is equipped with oil inlet, and second upper cover plate is equipped with inlet port, and guiding device is arranged to
The hydraulic oil in the main box is set to be flowed at inlet port from oil inlet by setting path.
First upper cover plate and second upper cover plate and the main box are detachable connection.
The guiding device includes the first deflector and the second deflector, and the first deflector is located under the oil inlet
Side, the second deflector are located at the lower section of inlet port, and the first deflector and the second deflector are L-shaped, and S-shaped is in the path that sets.
First deflector includes the first plate body and the second plate body being connected, and second deflector includes being connected
Third plate body and the 4th plate body, the first plate body and third plate body are to be oppositely arranged and have between the first plate body and third plate body
Allow hydraulic oil by gap, the first plate body and third plate body are connect with the main box.
The sizing mill further includes the motor being set on the fuel tank, the oil pump being connect with motor, solenoid valve
Group and forced air cooler and water cooler for reducing hydraulic fluid temperature, oil pump is pair vane pump, forced air cooler and electromagnetism
Valve group is to be oppositely arranged.
The sizing mill of the present invention, the core that rises are changed to eight prismatic structures, it is possible to increase the contact area between flaring die, to drop
The abrasion of low flaring die and the core that rises, extends service life, and due between the driving for the core that rises and the mating surface of flaring die
There is no the phenomenon that point contact, so as to improve the machining accuracy of pipe fitting, improves the yields of pipe fitting.
Description of the drawings
This specification includes the following drawings, and shown content is respectively：
Fig. 1 is the structural schematic diagram of sizing mill of the present invention；
Fig. 2 is the structural schematic diagram of another angle of sizing mill of the present invention；
Fig. 3 is the structural schematic diagram of plug die；
Fig. 4 is the sectional view of flaring die and the core that rises；
Fig. 5 is the structural schematic diagram of core of rising；
Fig. 6 is the structural schematic diagram of flaring die；
Fig. 7 is the sectional view for being flared oil cylinder；
Fig. 8 is the sectional view of necking oil cylinder；
Fig. 9 is the structural schematic diagram of fuel tank；
Figure 10 is the decomposition diagram of fuel tank；
Figure 11 is the vertical view of main box, and arrow indicates running of hydraulic power oil direction in figure；
Figure 12 is the assembling schematic diagram of the components such as fuel tank and motor；
Figure 13 is the principle schematic of hydraulic system；
Figure 14 is the assembling schematic diagram of the components such as fuel tank and water cooler；
In figure label for：
1, forced air cooler；
2, motor；3, oil pump；301, the first oil outlet；302, the second oil outlet；303, inlet port；
4, solenoid valve block；
5, plug die；501, necking mold section；502, it is flared mold section；503, it is flared driving portion；504, interconnecting piece；505, it drives
Face；506, mating surface；507, shell；508, it is flared working face；
6, fuel tank；601, oil inlet；602, inlet port；603, the first upper cover plate；604, the second upper cover plate；605, it repairs
Window；606, the first lateral wall；607, the second lateral wall；608, third lateral wall；609, the 4th lateral wall；610, bottom wall；611、
First plate body；612, the second plate body；613, third plate body；614, the 4th plate body；
7, holder；8, necking oil cylinder；9, it is flared oil cylinder；10, water cooler；11, connecting rod.
Specific implementation mode
Below against attached drawing, by the description of the embodiment, making to the specific implementation mode of the present invention further details of
Explanation, it is therefore an objective to those skilled in the art be helped to have more complete, accurate and deep reason to the design of the present invention, technical solution
Solution, and contribute to its implementation.
As shown in Fig. 1 to Figure 14, the present invention provides a kind of sizing mills, including fuel tank 6 and plug die 5, plug die 5 to include
Rise core, flaring die and the reducing die being sheathed on flaring die, and the core that rises has the flaring driving portion 503 being inserted into flaring die, flaring
Mould is made of multiple flaring mold sections 502 circumferentially, and flaring driving portion 503 is eight prismatic structures, is flared driving portion 503
With eight drive surfaces 505 circumferentially, flaring mold section 502 has the mating surface 506 contacted with drive surface 505, driving
Face 505 and mating surface 506 are plane.
Specifically, the sizing mill of the present invention is for carrying out flaring and necking processing to pipe fitting, pipe fitting is automobile exhaust
Pipe.As depicted in figs. 1 and 2, sizing mill of the invention further includes the holder 7 being set on fuel tank 6, and plug die 5 is set to holder 7
On, holder 7 is fixedly installed on the top surface of fuel tank 6, and fuel tank 6 is for storing hydraulic oil.
As shown in Figures 1 to 6, plug die 5 further includes shell 507 and the pressing sleeve that is sheathed on reducing die, and pressing sleeve is annulus
Shape structure and pressing sleeve are axially mobile setting, and pressing sleeve is coaxial arrangement with reducing die, flaring die and the core that rises.Reducing die is
It is made of multiple necking mold sections 501 circumferentially, shell 507 is fixedly connected with holder 7, and necking mold section 501 can be radially
It is moved, flaring mold section 502 can be moved radially, and shell 507 plays guiding to necking mold section 501 and flaring mold section 502
One end of effect, necking mold section 501 is inserted into shell 507, and the other end of necking mold section 501 is inserted into the centre bore of pressing sleeve, is expanded
One end of mouth mold valve 502 is inserted into shell 507, and the other end of flaring mold section 502 is inserted into the centre bore of reducing die.
As shown in Figures 1 to 6, flaring die is made of eight flaring mold sections 502 being circumferentially evenly arranged, and reducing die is
It is made of eight necking mold sections 501 being circumferentially evenly arranged, the inner cylinder face that the inner surface of each necking mold section 501 surrounds is constituted
The outer surface of undergauge working face, each necking mold section 501 surrounds an outer conical surface, and pressing sleeve with the male cone (strobilus masculinus) in being bonded
Circular conical surface, the axial movement of pressing sleeve can oppress necking mold section 501 by cone match and move radially inwardly to tighten, in turn
Necking forming is carried out to pipe fitting by undergauge working face.The external cylindrical surface that the outer surface of each flaring mold section 502 surrounds constitutes flaring
Working face 508, flaring working face 508 are opposite with undergauge working face.
As shown in Figures 1 to 6, the core that rises is that flaring driving portion 503 by being connected and interconnecting piece 504 are constituted, flaring driving
Portion 503 is sequentially arranged and is flared one end of one end and interconnecting piece 504 of driving portion 503 along the axial direction for the core that rises with interconnecting piece 504
It is fixedly connected, eight flaring mold sections 502 are uniformly distributed circumferentially in the outside of flaring driving portion 503, and flaring driving portion 503 is edge
Axially movable setting, flaring driving portion 503 for pushing eight flaring mold sections 502 to move radially with outside spreading, into
And flare formation is carried out to pipe fitting by being flared working face 508.Be flared driving portion 503 cross section (cross section be and the core that rises
Axis perpendicular plane) be octagon, be flared generally eight pyramids of driving portion 503, drive surface 505 be flaring drive
The outer surface in portion 503, it is the length direction along drive surface 505 from one end that drive surface 505, which is the width of tapered plane and drive surface 505,
Start to the other end to be gradually reduced, it is sharp to have angle and the angle between the length direction of drive surface 505 and the axis for the core that rises
Angle, the width that the vertical range between maximum one end of width of drive surface 505 and the axis for the core that rises is less than drive surface 505 are minimum
One end and the axis for the core that rises between vertical range.Maximum one end of width of drive surface 505 is nearest apart from interconnecting piece 504
One end, one end of the width minimum of drive surface 505 is one end far from interconnecting piece 504, and drive surface 505 has eight, flaring
Eight drive surfaces 505 on driving portion 503 are to be uniformly distributed circumferentially, and the flaring driving portion 503 of formation is eight pyramid-shaped structures,
The external diameter of a circle for being flared one end of driving portion 503 is maximum, and the external diameter of a circle of the other end is minimum, is flared driving portion 503
The center of circle of circumscribed circle be located on the axis for the core that rises, be flared the maximum one end of circumscribed circle diameter and the interconnecting piece 504 of driving portion 503
It is fixedly connected.Each flaring mold section 502 tool there are one mating surface 506, be flared each drive surface 505 of driving portion 503 respectively with
The mating surface 506 of one flaring mold section 502 contacts and mating surface 506 can remain the state being bonded, shape with drive surface 505
It is contacted at face, mating surface 506 is identical as the shape of drive surface 505, cross section (cross section of the centre bore of the flaring die of formation
For the plane of the axis perpendicular with flaring die) it is in that octagon rises by core in an axial direction in this way when carrying out expanding to pipe fitting
Mobile, eight drive surfaces 505 of the core that rises and eight mating surfaces 506 of flaring die are always maintained at surface contact state, this avoid
The generation of point contact phenomenon reduces the abrasion of rise core and flaring die, extends the service life of mold, avoids the pipe of pipe fitting
The problem for holding sizing inaccurate occurs.Even if rising by core and flaring die abrasion in use, due to being the abrasion feelings in face eight faces of contact
Condition is consistent, and the pipe end out of roundness of the pipe fitting of processing will not reduce, and ensure that the machining accuracy of pipe fitting.With pipe fitting
Out of roundness improve, the yields of product also gets a promotion.
As depicted in figs. 1 and 2, sizing mill of the invention further includes necking oil cylinder 8 and connect with the core that rises and rise for controlling
Core flaring oil cylinder 9 movable along the axial direction, necking oil cylinder 8 are movable along the axial direction for controlling pressing sleeve.Flaring oil cylinder 9 is located at
Between plug die 5 and necking oil cylinder 8, flaring oil cylinder 9, plug die 5 and necking oil cylinder 8 are coaxial arrangement.Rise the interconnecting piece 504 of core
Positioned at the outside of flaring die, interconnecting piece 504 is fixedly connected with the piston rod of flaring oil cylinder 9, and the piston rod of necking oil cylinder 8 passes through company
Bar 11 is connect with pressing sleeve, and connecting rod 11 is arranged two and two connecting rods 11 are located at the side of necking oil cylinder 8, the length of connecting rod 11
Direction is parallel with the axis of necking oil cylinder 8, and necking oil cylinder 8 drives pressing sleeve to carry out straight line shifting in an axial direction by two connecting rods 11
It is dynamic.
As shown in Figure 7 and Figure 8, it is hydraulic cylinder with double piston rods to be flared oil cylinder 9 and necking oil cylinder 8, is flared oil cylinder 9 and necking
Oil cylinder 8 increases effective heat dissipation area of oil cylinder using layout type one in front and one in back, and expand the sky of oil cylinder heat dissipation
Between, avoid oil cylinder from phenomena such as fever is fast, heat dissipation is slow occur.It is not in that high temperature is climbed at runtime to be flared oil cylinder 9 and necking oil cylinder 8
Row, the sealing element loss rate being flared inside oil cylinder 9 and necking oil cylinder 8 will decline, and the service life of two oil cylinders can obtain
Extend, the stability of the influence oil cylinder of high temperature will be obviously improved yet.Common hydraulic cylinder with double piston rods is simple due to it
Structure, is dismantled in repair and replacement sealing element is very convenient, substantially reduces maintenance time.When avoiding maintenance of equipment simultaneously
Downtime is long, and damp production is led to problems such as to influence production efficiency.
As shown in Figure 1, Figure 2, shown in Fig. 9 to Figure 11, fuel tank 6 is that necking oil cylinder 8 and flaring oil cylinder 9 provide hydraulic oil, and fuel tank 6 wraps
Include the main box for storing hydraulic oil, the first upper cover plate 603 for being set on main box and the second upper cover plate 604 and setting
Inside main box and make hydraulic oil by the guiding device of setting path flowing.Main box is the square of open top and inner hollow
Shape babinet, the first upper cover plate 603 and the second upper cover plate 604 are used to close the open top of main box, the first upper cover plate 603 and the
Two upper cover plates 604 are rectangular flat, and the first upper cover plate 603 and the second upper cover plate 604 are to be sequentially arranged along first direction, first party
To for horizontal direction and first direction it is parallel with the length direction of main box.Oil inlet there are one being set on first upper cover plate 603
601, it sets on the second upper cover plate 604 there are one inlet port 602, guiding device is arranged to make the hydraulic oil in main box by setting road
Diameter is flowed to from oil inlet 601 at inlet port 602.Oil inlet 601 is to run through to set in 603 upper edge plate thickness direction of the first upper cover plate
The circular hole set, inlet port 602 are the circular hole through setting, oil inlet 601 and oil suction in 604 upper edge plate thickness direction of the second upper cover plate
The axis of mouth 602 is parallel, and the hydraulic oil in necking oil cylinder 8 and flaring oil cylinder 9 is flowed into through oil inlet 601 inside fuel tank 6, fuel tank
Hydraulic oil inside 6 flows to necking oil cylinder 8 and flaring oil cylinder 9 through inlet port 602.
As shown in Figure 10, preferably, the first upper cover plate 603 and the second upper cover plate 604 with main box are detachable
Connection.First upper cover plate 603 and the second upper cover plate 604 are fixedly connected by screw with main box, the first upper cover plate 603 and second
Upper cover plate 604, which has, allows the through-hole that screw passes through.First upper cover plate 603 and the second upper cover plate 604 can be removed from main box, be torn open
Just there are enough spaces after opening the first upper cover plate 603 and the second upper cover plate 604, repairs parts inside main box and clear
The impurity for managing main tank internal deposition, it is more convenient and efficient than the part in babinet that can only be placed under repair before by repairing window, it is ensured that
Impurity inside main box also can be cleaned out adequately.
As shown in Figures 9 to 11, main box includes bottom wall 610 and the first lateral wall being vertically installed on bottom wall 610
606, the second lateral wall 607, third lateral wall 608 and the 4th lateral wall 609, the first lateral wall 606 and third lateral wall 608 are
It is oppositely arranged and the first lateral wall 606 and third lateral wall 608 is parallel, the second lateral wall 607 and the 4th lateral wall 609 are phase
To setting and the second lateral wall 607 and the 4th lateral wall 609 it is parallel, the length of the first lateral wall 606 and third lateral wall 608
Direction is parallel with second direction, and second direction is horizontal direction and second direction is parallel with the width direction of main box, the
The length direction of two lateral walls 607 and the 4th lateral wall 609 is parallel with first direction, and first direction mutually hangs down with second direction
Directly.Bottom wall 610 is located at the bottom of main box, the first lateral wall 606, the second lateral wall 607, outside third lateral wall 608 and the 4th
Side wall 609 is fixedly connected with bottom wall 610 and the first lateral wall 606, the second lateral wall 607, third lateral wall 608 and the 4th outside
Wall 609 extends towards the top of bottom wall 610, bottom wall 610, the first lateral wall 606, the second lateral wall 607, third lateral wall 608
It is rectangular flat with the 4th lateral wall 609, the edges at two ends of the first lateral wall 606 and third lateral wall 608 is respectively with second
Lateral wall 607 is fixedly connected with the edges at two ends of the 4th lateral wall 609, and the hollow cavity of the main box of formation is rectangular cavities.
As shown in Figures 9 to 11, guiding device is set in the hollow cavity of main box, and guiding device includes the first deflector and second
Deflector, the first deflector are located at the lower section of oil inlet 601, and the second deflector is located at the lower section of inlet port 602, the first deflector
It is L-shaped with the second deflector, sets path as S-shaped.First deflector includes the first plate body 611 and the second plate body being connected
612, the second deflector includes the third plate body 613 and the 4th plate body 614 being connected, and the first plate body 611 and third plate body 613 are
Be oppositely arranged and have between the first plate body 611 and third plate body 613 allow hydraulic oil by gap, the first plate body 611 and the
Three plate bodys 613 are connect with main box.First plate body 611, the second plate body 612, third plate body 613 and the 4th plate body 614 are square
Shape tablet, the first plate body 611, the second plate body 612, third plate body 613 and the 4th plate body 614 are vertically installed on bottom wall 610, the
One plate body 611, the second plate body 612, third plate body 613 and the 4th plate body 614 extend towards the top of bottom wall 610, the first water conservancy diversion
Plate is located at the lower section of the first upper cover plate 603, and the second deflector is located at the lower section of the second upper cover plate 604.First plate body 611 and third
The length direction of plate body 613 is parallel with second direction, the length direction and first party of the second plate body 612 and the 4th plate body 614
To parallel, the first plate body 611 and third plate body 613 are parallel with the first lateral wall 606, the second plate body 612 and the 4th plate body
614 is parallel with the second lateral wall 607, and one end on the length direction of the first plate body 611 is fixed with the 4th lateral wall 609 to be connected
It connects, the other end on the length direction of the first plate body 611 is fixedly connected with one end of the second plate body 612, the length of third plate body 613
One end on degree direction is fixedly connected with the second lateral wall 607, the other end on the length direction of third plate body 613 and the 4th plate
One end of body 614 is fixedly connected.Second plate body 612 is between the first lateral wall 606 and the first plate body 611, the second plate body 612
Extend towards at the first lateral wall 606 along first direction, has between the second plate body 612 and the first lateral wall 606 and allow hydraulic oil
By gap, the axis of oil inlet 601 and the second plate body 612 are located at the same side of the first plate body 611.4th plate body 614
Between third lateral wall 608 and third plate body 613, the 4th plate body 614 is along first direction towards prolonging at third lateral wall 608
Stretch, between third plate body 613 and third lateral wall 608 have allow hydraulic oil by gap, the axis of inlet port 602 and the 4th
Plate body 614 is located at the same side of third plate body 613.First plate body 611 and third plate body 613 are located at parallel with second direction
On same straight line, the first deflector and the second deflector match so that the hydraulic oil in main box is flowed by the setting path of S-shaped
It is dynamic.The hydraulic oil with high temperature enters from oil inlet 601 in main box in hydraulic system, and guiding device has been obstructed with high temperature
Hydraulic oil is fed directly to inlet port 602, and hydraulic oil will be flowed along the first deflector and the second deflector in main box
It is dynamic, extend the flow path of hydraulic oil, it is ensured that high-temperature oil liquid can quickly radiate in box house, and oil temperature is avoided to increase
Soon, the problems such as oil liquid temperature is high occurs, while solving fluid again and radiating in babinet non-uniform phenomenon, to ensure that hydraulic pressure
The stability of executive component work, indirectly improves product yield.
As shown in Figure 1, Figure 2, shown in Figure 12 to Figure 14, sizing mill of the invention further include the motor 2 being set on fuel tank 6,
Solenoid valve block 4 and the oil pump 3 being connect with motor 2, oil pump 3 and motor 2 are fixedly installed on the top surface of fuel tank 6, and oil pump 3 is used
In providing hydraulic oil to flaring oil cylinder 9 and necking oil cylinder 8, oil pump 3 is connect with fuel tank 6, flaring oil cylinder 9 and necking oil cylinder 8.Oil pump
3 preferably pair vane pump, motor 2 are used to provide the power for making oil pump 3 operate, and there are one inlet ports 303, one for the tool of oil pump 3
A first oil outlet 301 and second oil outlet 302, the inlet port 303 of oil pump 3 are connected to the inlet port 602 of fuel tank 6, oil
When 3 operating of pump, the hydraulic oil in fuel tank 6 is flowed into through inlet port 303 in oil pump 3.When carrying out expanding to pipe fitting, oil pump 3
In hydraulic oil through the first oil outlet 301 flow to flaring oil cylinder 9；When carrying out necking processing to pipe fitting, the hydraulic oil warp of oil pump 3
Second oil outlet 302 flows to necking oil cylinder 8.
As shown in Figure 1, Figure 2, shown in Figure 12 to Figure 14, oil pump 3 and motor 2 are fixedly installed on the second upper cover plate 604 of fuel tank 6
On, the first oil outlet 301 of oil pump 3 is connect by solenoid valve block 4 with the oil inlet 601 of fuel tank 6, the second oil outlet of oil pump 3
302 are connect by another solenoid valve block 4 with the oil inlet 601 of fuel tank 6, and solenoid valve block 4 is preferably electromagnetic pilot overflow valve, electromagnetism
Valve group 4 is fixedly installed on the first upper cover plate 603 of fuel tank 6, the oil inlets of two solenoid valve blocks 4 by oil pipe respectively with oil pump
3 the first oil outlet 301 and the connection of the second oil outlet 302, the oil inlet that the oil outlet of solenoid valve block 4 passes through oil pipe and fuel tank 6
601 connections.The sizing mill of the present invention uses a motor 2 instead in fuel system and pair vane pump is driven to carry out fuel feeding, in this way
Equipment cost is saved, while also reducing equipment overall dimensions, reduces occupation area of equipment.It is added in hydraulic system
Electromagnetic pilot overflow valve, the fluid that equipment duplex pump when standby is confessed directly are flowed by oil return line in fuel tank 6, in this way
There will be no pressure in hydraulic system, are ejected from damaged oil pipe so as to avoid hydraulic oil and hurt operator.Electromagnetism
Valve group 4 can be by adjusting output pressure, to ensure that the operating pressure of sizing mill is in zone of reasonableness manually.Solenoid valve block 4 is normal
Valve opening door.When equipment workpieces processing time interval is more than 2s, the PLC in circuit system can give one electricity of electromagnetic pilot overflow valve
Signal, electromagnetic pilot overflow valve obtain the movement of signal back valve core, and electromagnetic pilot overflow valve becomes normally closed by normally opened, and oil pump 3 is confessed
Fluid will be fed directly in fuel tank 6 (system working pressure will become zero at this time).Operating pressure is zero, even if working oil path
In oil pipe it is damaged, fluid will not be ejected from oil pipe, will not thus be damaged to operator.
As shown in Figure 1, Figure 2, shown in Figure 12 to Figure 14, sizing mill of the invention further includes for reducing the air-cooled of hydraulic fluid temperature
But device 1, forced air cooler 1 and solenoid valve block 4 are to be oppositely arranged, and forced air cooler 1 is fixedly installed on the first upper cover plate 603, fuel tank 6
Oil inlet 601 between forced air cooler 1 and solenoid valve block 4.Forced air cooler 1 be use air as the medium of heat exchange into
The cooler of row heat exchange, heat are taken away by air, also referred to as aerial cooler.Forced air cooler 1 is arranged two, two wind
Cooler 1 is respectively to be oppositely arranged with a solenoid valve block 4, and two forced air coolers 1 are in and the with a solenoid valve block 4 respectively
On the parallel same straight line in two directions, two forced air coolers 1 are arranged side by side and two forced air coolers 1 are in and first direction
On parallel same straight line.Motor 2 is located at the same side of two solenoid valve blocks 4 and two forced air coolers 1, by motor 2
It is placed directly in side individually to radiate, in order to avoid the high temperature that motor 2 generates directly influences solenoid valve block 4, while increasing wind again
Cooler 1 being capable of rapid cooling with the high-temperature oil liquid ensured in hydraulic system.Two typhoon coolers 1 are inhaled from 4 side of solenoid valve block
Enter cold wind, is discharged finally by the fan side on forced air cooler 1, can not only quickly reduce fluid in hydraulic system in this way
Temperature can also reduce the temperature of solenoid valve block 4.
As shown in Figure 1, Figure 2, shown in Figure 12 to Figure 14, sizing mill of the invention further includes the water cooling for reducing hydraulic fluid temperature
But device 10, water cooler 10 are fixedly connected with fuel tank 6, and water cooler 10 is located at the lower section of forced air cooler 1.Water cooler 10 is located at
In the hollow cavity of main box, water cooler 10 cools down to the hydraulic oil in fuel tank 6, and cooling water flows in water cooler 10
Dynamic, high temperature hydraulic oil is flowed through from the outside of water cooler 10, the heat exchange that hydraulic oil passes through 10 surface of water cooler with cooling water
Play the role of heat dissipation, 10 radiating efficiency of water cooler is high, compact-sized.There are inlet and outlet, water on water cooler 10
The external cooling water supplied of inlet and outlet connection of cooler 10.
The present invention is exemplarily described above in association with attached drawing.Obviously, present invention specific implementation is not by above-mentioned side
The limitation of formula.As long as using the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress；Or not
It is improved, the above-mentioned design of the present invention and technical solution are directly applied into other occasions, in protection scope of the present invention
Within.
Claims (10)
1. sizing mill, including fuel tank and plug die, plug die includes rise core, flaring die and the reducing die that is sheathed on flaring die,
There is the core that rises the flaring driving portion being inserted into flaring die, flaring die to be made of multiple flaring mold sections circumferentially, special
Sign is：The flaring driving portion is eight prismatic structures, and flaring driving portion has eight drive surfaces circumferentially, the expansion
It is plane that mouth mold valve, which has the mating surface contacted with drive surface, drive surface and mating surface,.
2. sizing mill according to claim 1, it is characterised in that：The drive surface is that the width of tapered plane and drive surface is
Be gradually reduced to the other end since one end, between the maximum one end of width and the axis of the core that rises of drive surface it is vertical away from
The vertical range between one end and the axis for the core that rises from the width minimum less than drive surface.
3. sizing mill according to claim 1 or 2, it is characterised in that：Further include necking oil cylinder and is connect with the core that rises
And for controlling the core that rises flaring oil cylinder movable along the axial direction, the plug die further includes the pressure being sheathed on the reducing die
Set, necking oil cylinder are movable along the axial direction for controlling pressing sleeve.
4. sizing mill according to claim 3, it is characterised in that：The flaring oil cylinder is located at the plug die and the contracting
Between mouth oil cylinder, flaring oil cylinder, plug die and necking oil cylinder are coaxial arrangement.
5. sizing mill according to any one of claims 1 to 4, it is characterised in that：The fuel tank includes for storing hydraulic oil
Main box, the first upper cover plate for being set on main box and the second upper cover plate and be set to inside main box and make hydraulic oil
By the guiding device of setting path flowing.
6. sizing mill according to claim 5, it is characterised in that：First upper cover plate is equipped with oil inlet, and described the
Two upper cover plates are equipped with inlet port, and guiding device is arranged to make the hydraulic oil in the main box by setting path from oil inlet
It flows at inlet port.
7. sizing mill according to claim 5 or 6, it is characterised in that：First upper cover plate and second upper cover plate
It is detachable connection with the main box.
8. the sizing mill described according to claim 6 or 7, it is characterised in that：The guiding device includes the first deflector and the
Two deflectors, the first deflector are located at the lower section of the oil inlet, and the second deflector is located at the lower section of inlet port, the first deflector
It is L-shaped with the second deflector, S-shaped is in the path that sets.
9. sizing mill according to claim 8, it is characterised in that：First deflector includes the first plate body being connected
With the second plate body, second deflector includes the third plate body and the 4th plate body being connected, and the first plate body and third plate body are
Be oppositely arranged and have between the first plate body and third plate body allow hydraulic oil by gap, the first plate body and third plate body and institute
State main box connection.
10. sizing mill according to any one of claims 1 to 9, it is characterised in that：It further include the electricity being set on the fuel tank
Motivation, the oil pump being connect with motor, solenoid valve block and forced air cooler and water cooler for reducing hydraulic fluid temperature, oil
Pump is pair vane pump, and forced air cooler and solenoid valve block are to be oppositely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810234592.1A CN108405737B (en) | 2018-03-21 | 2018-03-21 | Sizing mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810234592.1A CN108405737B (en) | 2018-03-21 | 2018-03-21 | Sizing mill |
Publications (2)
| Publication Number | Publication Date |
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| CN108405737A true CN108405737A (en) | 2018-08-17 |
| CN108405737B CN108405737B (en) | 2019-11-08 |
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ID=63133128
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810234592.1A Active CN108405737B (en) | 2018-03-21 | 2018-03-21 | Sizing mill |
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| Country | Link |
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| CN (1) | CN108405737B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110153298A (en) * | 2019-06-27 | 2019-08-23 | 烟台豪德博尔机械设备有限公司 | Steel pipe bell and spigot automatic moulding production line |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108405737B (en) | 2019-11-08 |
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