CN103434105B - The stepless time adjustment device of reversal valve - Google Patents
The stepless time adjustment device of reversal valve Download PDFInfo
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- CN103434105B CN103434105B CN201310337385.6A CN201310337385A CN103434105B CN 103434105 B CN103434105 B CN 103434105B CN 201310337385 A CN201310337385 A CN 201310337385A CN 103434105 B CN103434105 B CN 103434105B
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Abstract
The invention discloses the stepless time adjustment device of a kind of reversal valve, including valve pocket and the spool that can rotate in valve pocket, speed governing commutation hole group it is shaped with on valve pocket, it is shaped with on spool and assembles the oil groove group of conjunction with speed governing commutation hole, spool is in rotary course, hole, mouth alignment that oil groove group is different from speed governing commutation Kong Zuzhong connect, to realize stepless time adjustment, commutation function.The technical program is used on high-speed injection molding machine, make injection machine angle of rotary spool during folding mould just can change the direction of inlet and outlet of fuel channel and the size of flow, finally realize the stepless time adjustment of folding mould oil cylinder piston, it is round and smooth that the folding mold process medium velocity simultaneously making injection machine becomes, and reduces jitter phenomenon.
Description
Technical field
The present invention relates to a kind of reversal valve, particularly relate to the stepless time adjustment device of a kind of reversal valve.
Background technology
High-speed injection molding machine is different from common injection machine, and the molding cycle of high-speed injection molding machine is the shortest, completes, open in general 4 seconds
Mould and the time of matched moulds, complete in respectively requiring 1 second.The stroke of folding mould is in 0.5-1 rice, average speed 0.5-1 meter per second, phase
When in 0.5-1 millimeter/millisecond.
The folding mould reversal valve control of current high-speed injection molding machine, but its response time is relatively slow, common reversal valve from
When obtaining, the signal of telecommunication fully opens to electromagnetic valve core or closes, and the time needs 0.1 second (100 milliseconds) left and right, opens at electromagnetic valve
Being out of control with the distance being equivalent to 50-100 millimeter in closing process, cause folding mould unstable, particularly matched moulds low pressure is protected
Protect (mould guarantor) position and the complete final position of die sinking.
It addition, the area at folding mould oil cylinder piston two ends (there are piston rod, other end piston-rodless in one end) is in different size,
The piston area of piston-rodless end is more than the piston area having tailpiece of the piston rod.Oil cylinder two ends oil inlet quantity is with fuel-displaced as the piston moves
The size of amount is also different.So the selection tubing diameter of the entry/exit oil of injection machine folding mould oil cylinder is also different,
Connect the tubing diameter of piston-rodless end oil pocket commonly greater than the diameter having tailpiece of the piston rod oil pocket oil pipe.But the reversal valve of folding mould
Openings of sizes identical (opening of reversal valve can not change).Finally open the speed of closing piston, by piston-rodless end
The size of the reversal valve opening of oil pocket and flow velocity (being eventually converted into the hydraulic oil pressure in piston-rodless end oil pocket) determine,
There is piston end little on speed impact.
And when controlling the size valve conversion of folding mould reversal valve, because the sudden change of flow causes the vibration of template big.Open at a high speed
During matched moulds, this situation becomes apparent from.
Summary of the invention
In order to overcome defect of the prior art, the present invention provides the stepless time adjustment dress of a kind of reversal valve for high-speed injection molding machine
Put, make injection machine angle of rotary spool during folding mould just can change the direction of inlet and outlet of fuel channel and the size of flow,
Finally realizing the stepless time adjustment of folding mould oil cylinder piston, make that the folding mold process medium velocity of injection machine becomes is round and smooth simultaneously, reduces
Jitter phenomenon.
The technical solution adopted for the present invention to solve the technical problems is:
The stepless time adjustment device of reversal valve, including valve pocket and the spool that can rotate in described valve pocket, it is characterised in that institute
State and on valve pocket, be shaped with speed governing commutation hole group, described spool is shaped with and assembles the oil groove group of conjunction with described speed governing commutation hole.
As the further optimization to technique scheme, described speed governing commutation hole group include the first spill port, second time
Oilhole, the first oil-in and the second oil-in, described first spill port, the second spill port, the first oil-in and the second oil-in
It is positioned at the middle part of described valve pocket, described valve pocket is also shaped with the first oil-out and the second oil-out, described first oil-out and institute
State the second oil-out and lay respectively at the both sides of described speed governing commutation hole group；
Described oil groove group includes that the first of annular goes out oil groove and second and goes out oil groove, and described first goes out oil groove and second goes out oil groove
Laying respectively at the position near described spool two ends, described first goes out oil groove and described second goes out to be shaped with the first oil-feed between oil groove
Groove and the second oil-feed tank, described first oil-feed tank goes out oil groove with described first and connects, and described second oil-feed tank goes out with described second
Oil groove connects；
Described spool is in rotary course, and described first goes out oil groove is directed at described first oil-out, and described second goes out oil groove
It is directed at described second oil-out；When described first oil-feed tank is directed at described first spill port, described second oil-feed tank is directed at institute
State the second oil-in；When described first oil-feed tank is directed at described first oil-in, described second oil-feed tank is still directed at described
Second oil-in；When described first oil-feed tank is directed at described second oil-in, described second oil-feed tank is directed at described second time
Oilhole.
As the further optimization to technique scheme, described second oil-in is L-shaped.
The technical program being used on high-speed injection molding machine, the angle of rotary spool is just during folding mould to make injection machine
The direction of inlet and outlet of fuel channel and the size of flow can be changed, finally realize the stepless time adjustment of folding mould oil cylinder piston, make injection simultaneously
It is round and smooth that the folding mold process medium velocity of machine becomes, and reduces jitter phenomenon.
Below in conjunction with the accompanying drawings embodiments of the present invention are described further.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of better embodiment of the present invention.
Fig. 2 is the structural representation of valve pocket in Fig. 1.
Fig. 3 is the structural representation of spool in Fig. 1.
Fig. 4 is the sectional view that Fig. 3 cuts correspondence open along the first oil-feed tank direction.
Fig. 5 is the rearview that the valve pocket of Fig. 2 is corresponding.
Fig. 6 is the schematic diagram that the present invention is corresponding.
Fig. 7 is the another kind of deformation of the present invention the second oil-in.
Fig. 8 is another deformation of the present invention the second oil-in.
Fig. 9 is the also one deformation of the present invention the second oil-in.
Figure 10 is the structural representation of the reversal valve installing present embodiment.
Detailed description of the invention
As shown in Fig. 14, the stepless time adjustment device of reversal valve, including valve pocket 2 and the spool 1 that can rotate in valve pocket 2,
One end of spool 1 is shaped with the axial trough 15 being connected with servo motor shaft.Be shaped with speed governing commutation hole group on valve pocket 2, spool 1 is shaped with
Speed governing commutation hole assembles the oil groove group of conjunction.
Above-mentioned speed governing commutation hole group includes that the first spill port T1, the second spill port T2, the first oil-in A1 and second enter
Hydraulic fluid port P, described first spill port T1, the second spill port T2, the first oil-in A1 and the second oil inlet P are positioned at described valve pocket 2
Middle part, the first spill port T1, the second spill port T2, the first oil-in A1 and the second oil inlet P all have a pair, and every pair respective
Substantially symmetrical about its central axis, by the vivider display of comparison diagram 2 and Fig. 5 about valve pocket 2.As in figure 2 it is shown, wherein the first spill port T1
Be a along the central angle that arc length L1 on valve pocket 2 surface is corresponding between the second oil inlet P, the second spill port T2 and the second oil inlet P
Between be b along the central angle that arc length L2 on valve pocket 2 surface is corresponding, meet a+b=180 ° between a, b.
The first oil-out B and the second oil-out A, the first oil-out B and the second oil-out A position respectively also it is shaped with on valve pocket 2
In the upper and lower both sides of speed governing commutation hole group, the first oil-out B and high-speed injection molding machine folding mould oil cylinder have tailpiece of the piston rod oil pocket
Oil pipe connects, and the second oil-out A is connected with the oil pipe of the piston-rodless end oil pocket of high-speed injection molding machine folding mould oil cylinder.Wherein first
Oil-in A1 and the second oil-out A or the first oil-in A1 and the connection of the second oil inlet P, both principles are the same, all for reality
The differential state of existing folding mould oil cylinder.Present embodiment uses the first oil-in A1 and the second oil-out A connection.
Above-mentioned oil groove group includes that the first of annular goes out oil groove 11 and second and goes out oil groove 14, and first goes out oil groove 11 and second goes out
Oil groove 14 lays respectively at the position near described spool 1 two ends, and first goes out oil groove 11 and second goes out oil groove 14 and be annular.First
Going out oil groove 11 and second to go out to be shaped with the first oil-feed tank 12 and the second oil-feed tank 13 between oil groove 14, the first oil-feed tank 12 and second enters
Oil groove 13 the most all has a pair, every pair of respective substantially symmetrical about its central axis about spool 1.Wherein the first oil-feed tank 12 and first goes out oil groove 11
Connection, the second oil-feed tank 13 goes out oil groove 14 with second and connects.
The plane c at a certain angle at the plane at the first oil-feed tank 12 place and the second oil-feed tank 13 place (i.e. arc length L1 '
Corresponding central angle), its size meets c=a.
In the spool 1 whole rotary course in valve pocket 2, owing to first goes out oil groove 11 and second and go out oil groove 14 and be ring
Shape, therefore first goes out oil groove 11 and is directed at the first oil-out B all the time, and second goes out oil groove 14 is directed at the second oil-out A the most all the time；But
Speed governing commutation Kong Zuyu oil groove group between close, understanding and considerate condition there will be five kinds of states, i.e. five kinds of states shown by Fig. 6, letter
Between the line of band snowflake represent that both connect.Owing to the first oil-in A1 and the second oil-out A connects, for becoming apparent from, understand
Show its connected state, schematic diagram eliminates the first oil-in A1.
The first state (intermediateness in Fig. 6): the first oil-feed tank 12 is directed at the first spill port T1, the second oil-feed tank 13
It is directed at the second oil inlet P, namely corresponding for Fig. 1 state.Now the hydraulic oil in oil pump pass sequentially through the second oil inlet P,
Two oil-feed tanks 13, second go out oil groove the 14, second oil-out A, oil pipe inject high-speed injection molding machine folding mould oil cylinder piston-rodless end
Oil pocket, the hydraulic oil in tailpiece of the piston rod oil pocket that has of folding mould oil cylinder passes sequentially through oil pipe, the first oil-out B, first goes out simultaneously
Oil groove the 11, first oil-feed tank the 12, first spill port T1 returns to fuel tank.This state is the matched moulds process of high-speed injection molding machine, but the completeest
Full matched moulds puts in place.
The second state (second state from right to left in Fig. 6): the spool 1 of Fig. 1 state rotates to an angle, extremely counterclockwise
First oil-feed tank 12 is directed at the first oil-in A1, and now the second oil-feed tank 13 is still directed at the second oil inlet P；Now in oil pump
Hydraulic oil pass sequentially through the second oil inlet P, the second oil-feed tank 13, second go out oil groove the 14, second oil-out A, oil pipe injects at a high speed
The piston-rodless end oil pocket of injection machine folding mould oil cylinder.Owing to the first oil-in A1 and the second oil-out A connects, meanwhile,
Folding mould oil cylinder have the hydraulic oil in tailpiece of the piston rod oil pocket pass sequentially through oil pipe, the first oil-out B, first go out oil groove 11,
One oil-feed tank the 12, first oil-in A1, the second oil-out A are also injected into the piston-rodless end oil of high-speed injection molding machine folding mould oil cylinder
Chamber.This state is actual is the differential state of oil cylinder, and the quick matched moulds of high-speed injection molding machine puts in place.
The third state (first state from right to left in Fig. 6): the spool 1 under above-mentioned the second state continues rotation counterclockwise
Turning certain angle, until the first oil-feed tank 12 departs from the first oil-in A1, the second oil-feed tank 13 also departs from the second oil inlet P, this
Under state, the only first oil-in A1 and the second oil-out A is in connected state, and remaining does not connects.This state
Injection state for high-speed injection molding machine.
4th kind of state (first state from left to right in Fig. 6): the spool 1 under the third state continues to rotate counterclockwise,
Going to the first oil-feed tank 12 and be directed at the second oil inlet P, now the second oil-feed tank 13 is directed at the second spill port T2.Under this state, oil
Hydraulic oil in pump pass sequentially through the second oil inlet P, the first oil-feed tank 12, first go out oil groove the 11, first oil-out B, oil pipe enters
Enter high-speed injection molding machine folding mould oil cylinder has tailpiece of the piston rod oil pocket；The hydraulic oil of the piston-rodless end oil pocket of folding mould oil cylinder is successively
By oil pipe, the second oil-out A, second go out oil groove the 14, second oil-feed tank the 13, second spill port T2 and return to fuel tank.This process is
The die sinking process of injection machine.
5th kind of state (second state from left to right in Fig. 6): the spool 1 under the 4th kind of state continues to rotate counterclockwise,
Until the first oil-feed tank 12 departs from the second oil inlet P, the second oil-feed tank 13 also departs from the second spill port T2, this state and the third
State is the same, and the most only first oil-in A1 and the second oil-out A is in connected state.This state is high-speed injection molding machine two production
The intermittent condition in cycle or the stopped status of injection machine.If spool 1 continues to rotate counterclockwise, it is returned to the first state.
In the technical program, before each oil groove, hydraulic fluid port, oilhole into and out of, return etc. word be intended merely to distinguish title to these
The general definition that structure is made, the hydraulic oil flow being not necessarily referring in counter structure to, the hydraulic oil flow of these structures is to above-mentioned
Description in five kinds of states is as the criterion.
In technique scheme, each oil groove, hydraulic fluid port, the size of oilhole specifically set according to practical situation, by above-mentioned five
Kind of state is visible, and during folding mould, the angle of rotating regulation valve core 2 can realize the direction of change inlet and outlet of fuel channel and flow
Size, finally realizes the stepless time adjustment of folding mould oil cylinder piston, and make that the folding mold process medium velocity of injection machine becomes is round and smooth, reduces
Jitter phenomenon.
In technique scheme, the position of the second spill port T2 is the most changeless, actual meeting basis
Central angle is that the variation of a, b changes.Such as when a=b=90 °, the second spill port T2 is just being located in the first spill port T1
Lower section, rather than as shown in figure 2 in the underface of the first oil-in A1.And when a=120 °, when b=60 °, the second spill port T2
Will be in the underface of the first oil-in A1.
In technique scheme, the second oil inlet P is overall in L-shaped, and its concrete structure is also not limited to Fig. 2 such as and shows
Show that suitable for reading and end opening forms, it is also possible to make any one structure of Fig. 7, Fig. 8, Fig. 9.As long as these inside configuration are all connections
(in Fig. 2's: suitable for reading connect with end opening, in Fig. 8: Zuo Kou connects with right mouth, in Fig. 9: three mouthfuls of all connections), dimensionally can simultaneously
Meet the requirement of above-mentioned five kinds of states, all can use.
As shown in Figure 10, stepless time adjustment device is arranged in valve body 3, constitute reversal valve, on valve body 3 with the first oil-out
B and the second position corresponding for oil-out A are shaped with interface 31, for the connection with oil pipe.During use, can be direct by valve body 3
It is arranged on the end cap of folding mould oil cylinder.
The preferred embodiment of the present invention described in detail above.Should be appreciated that the ordinary skill of this area is without wound
The property made work just can make many modifications and variations according to the design of the present invention.Therefore, all technical staff in the art
The most on the basis of existing technology by the available technology of logical analysis, reasoning, or a limited experiment
Scheme, all should fall within the scope of protection of the present invention.
Claims (2)
1. the stepless time adjustment device of reversal valve, including valve pocket (2) and the spool (1) that can rotate in described valve pocket (2), its feature
It is on described valve pocket (2) to be shaped with speed governing commutation hole group, described spool (1) is shaped with and assembles the oil of conjunction with described speed governing commutation hole
Groove group, described speed governing commutation hole group includes that the first spill port (T1), the second spill port (T2), the first oil-in (A1) and second enter
Hydraulic fluid port (P), described first spill port (T1), the second spill port (T2), the first oil-in (A1) and the second oil-in (P) are positioned at institute
State the middle part of valve pocket (2), described valve pocket (2) is also shaped with the first oil-out (B) and the second oil-out (A), described first fuel-displaced
Mouth (B) and described second oil-out (A) lay respectively at the both sides of described speed governing commutation hole group；
Described oil groove group includes that the first of annular goes out oil groove (11) and second and goes out oil groove (14), and described first goes out oil groove (11) and the
Two go out oil groove (14) lays respectively at the position near described spool (1) two ends, and described first goes out oil groove (11) and described second goes out
Being shaped with the first oil-feed tank (12) and the second oil-feed tank (13) between oil groove (14), described first oil-feed tank (12) goes out with described first
Oil groove (11) connects, and described second oil-feed tank (13) goes out oil groove (14) with described second and connects；
Described spool (1) is in rotary course, and described first goes out oil groove (11) is directed at described first oil-out (B), and described second
Go out oil groove (14) and be directed at described second oil-out (A)；When described first oil-feed tank (12) is directed at described first spill port (T1),
Described second oil-feed tank (13) is directed at described second oil-in (P)；When described first oil-feed tank (12) is directed at described first oil-feed
During mouth (A1), described second oil-feed tank (13) is still directed at described second oil-in (P)；When described first oil-feed tank (12) is directed at
During described second oil-in (P), described second oil-feed tank (13) is directed at described second spill port (T2).
The stepless time adjustment device of reversal valve the most according to claim 1, it is characterised in that described second oil-in (P) is in L
Font.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310337385.6A CN103434105B (en) | 2013-08-06 | 2013-08-06 | The stepless time adjustment device of reversal valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310337385.6A CN103434105B (en) | 2013-08-06 | 2013-08-06 | The stepless time adjustment device of reversal valve |
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| CN103434105A CN103434105A (en) | 2013-12-11 |
| CN103434105B true CN103434105B (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310337385.6A Active CN103434105B (en) | 2013-08-06 | 2013-08-06 | The stepless time adjustment device of reversal valve |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103448224B (en) * | 2013-08-25 | 2016-04-06 | 浙江德库玛机械有限公司 | The stepless time adjustment device of injection reversal valve |
| CN106122147B (en) * | 2016-07-25 | 2018-03-23 | 南京南瑞集团公司 | A kind of main control valve throttling window valve pocket |
| JP6847742B2 (en) * | 2017-03-31 | 2021-03-24 | 住友重機械工業株式会社 | Injection device and direction switching valve |
| CN111941786B (en) * | 2020-09-04 | 2022-06-24 | 宁波海洲机械有限公司 | Single-cylinder precise servo injection molding machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661297A (en) * | 2012-05-30 | 2012-09-12 | 江苏扬力数控机床有限公司 | Hydraulic system of numerical control turrent punch press and working method of hydraulic system |
| CN202900822U (en) * | 2012-10-12 | 2013-04-24 | 浙江交通职业技术学院 | Dual-redundancy three-position four-way directional control valve |
| CN203496247U (en) * | 2013-08-06 | 2014-03-26 | 浙江德库玛机械有限公司 | Stepless speed regulation device of reversing valve |
-
2013
- 2013-08-06 CN CN201310337385.6A patent/CN103434105B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661297A (en) * | 2012-05-30 | 2012-09-12 | 江苏扬力数控机床有限公司 | Hydraulic system of numerical control turrent punch press and working method of hydraulic system |
| CN202900822U (en) * | 2012-10-12 | 2013-04-24 | 浙江交通职业技术学院 | Dual-redundancy three-position four-way directional control valve |
| CN203496247U (en) * | 2013-08-06 | 2014-03-26 | 浙江德库玛机械有限公司 | Stepless speed regulation device of reversing valve |
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Effective date of registration: 20160801 Address after: 318000, No. 369, Jiang Jiang Road, new front street, Huangyan District, Zhejiang, Taizhou Applicant after: Sino Holdings Group Co., Ltd. Address before: 318020 Taizhou Province, Huangyan District, the new front of the West Street Village Applicant before: Zhejiang Dekuma Machinery Co., Ltd. |
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