CN202527664U - Double-acting section combined hydraulic cylinder - Google Patents
Double-acting section combined hydraulic cylinder Download PDFInfo
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- CN202527664U CN202527664U CN2012200096068U CN201220009606U CN202527664U CN 202527664 U CN202527664 U CN 202527664U CN 2012200096068 U CN2012200096068 U CN 2012200096068U CN 201220009606 U CN201220009606 U CN 201220009606U CN 202527664 U CN202527664 U CN 202527664U
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Abstract
The utility model discloses a double-acting section combined hydraulic cylinder which comprises a middle body, a first oil cylinder and a second oil cylinder, wherein a hydraulic cavity is arranged on the middle body; the hydraulic cavity is communicated with a high-level oil tank by an electric control check valve; the first oil cylinder is arranged at one end of the middle body; the first oil cylinder comprises a first piston rod, a first plunger and a first cylinder barrel; the second oil cylinder is arranged at the other end of the middle body; and the second oil cylinder comprises a second piston rod, a second plunger and a second cylinder barrel. According to the double-acting section combined hydraulic cylinder provided by the utility model, inlet and return ports of the oil cylinders are arranged on the middle body in a centralized mode, so that the complete machine is neater and is easy to maintain and repair. The hydraulic cavity on the middle body is communicated with the high-level oil tank by the electric control check valve; one oil cylinder is saved, so that the cost is saved; and pressure oil is directly applied to the acting cylinder barrels, so that the response speed is high and the double-acting section combined hydraulic cylinder is convenient to accurately control the position and the speed.
Description
Technical field
The utility model relates to the hydraulic system technical field, more particularly, relates to a kind of double acting cross section assembled hydraulic cylinder.
Background technology
It is real that shoot squeeze molding machine utilizes compressed air that molding sand is injected the sandbox pretension equably, and then exert pressure and carry out compacting.Commonly used have vertical parting flaskless shoot-squeeze moulding machine and a horizontal parting slip flask shoot-squeeze moulding machine.The vertical parting flaskless shoot-squeeze moulding machine moulding is without sandbox, and molding sand is directly injected the moulding chamber that has template, and institute's sand mold dimensional accuracy of making is high, and because of all there is die cavity on the sandbox two sides, productivity ratio is very high, but core is relatively more difficult down, molding sand quality is required tight.Horizontal parting slip flask shoot-squeeze moulding machine utilizes sandbox to carry out moulding, and sand mold is made back mould assembly drawing, and following core is more convenient, and productivity ratio is high.
The moulding speed that shoot squeeze molding machine is had relatively high expectations, higher moulding precision, stably the mould assembly performance, stablize adjustable compaction force.Existing execution oil cylinder is used by two oil cylinder combinations; One of them oil cylinder is the speedup oil cylinder; All be that two oil cylinders move at the same time in the modeling process; And complicated heavy cylinder structure and sealing ring, cause that the moulding action response lags behind, inertia is big, be not easy to accurate control position and speed, and manufacturing cost is high, installation and maintenance are complicated, oil pipe is many and staggered complicated, easy leakage of oil.
Therefore, how a kind of double acting cross section assembled hydraulic cylinder is provided, to reduce manufacturing cost.
The utility model content
In view of this, the utility model provides a kind of double acting cross section assembled hydraulic cylinder, to reduce manufacturing cost.
For realizing above-mentioned purpose, the utility model provides following technical scheme:
A kind of double acting cross section assembled hydraulic cylinder comprises:
Intermediate offers hydraulic cavities on it, said hydraulic cavities is connected with top petrol tank through electric control one-way valve, and on the direction of said top petrol tank, said electric control one-way valve is in conducting state in said hydraulic cavities;
Be arranged at first oil cylinder of said intermediate one end, said first oil cylinder comprises first piston bar, first plunger and first cylinder barrel; One end of said first cylinder barrel links to each other with said intermediate, and its inner chamber communicates with said hydraulic cavities; Said first piston bar is arranged in said first cylinder barrel; And the one of which end is provided with first piston; Said first piston is connected with the bore seal of said first cylinder barrel; Have first gap between said first piston bar and said first cylinder barrel, said first cylinder barrel is provided with second hydraulic fluid port that communicates with said first gap; Said first plunger is a hollow tube, and the one of which end is connected with first hydraulic fluid port of said intermediate, and the other end passes the intracavity inter-connection of said first piston and said first piston bar;
Be arranged at second oil cylinder of the said intermediate other end, said second oil cylinder comprises second piston rod, second plunger and second cylinder barrel; One end of said second cylinder barrel links to each other with said intermediate, and its inner chamber communicates with said hydraulic cavities; Said second piston rod is arranged in said second cylinder barrel; And the one of which end is provided with second piston; Said second piston is connected with the bore seal of said second cylinder barrel; Have second gap between said second piston rod and said second cylinder barrel, said second cylinder barrel is provided with the 3rd hydraulic fluid port that communicates with said second gap; Said second plunger is a hollow tube, and the one of which end is connected with the 4th hydraulic fluid port of said intermediate, and the other end passes the intracavity inter-connection of said second piston and said second piston rod.
Preferably, in the assembled hydraulic cylinder of above-mentioned double acting cross section, the afterbody of said first cylinder barrel and said second cylinder barrel is equipped with the cylinder barrel end cap.
Preferably, in the assembled hydraulic cylinder of above-mentioned double acting cross section, said intermediate is arranged on the base.
Preferably, in the assembled hydraulic cylinder of above-mentioned double acting cross section, the periphery of said first cylinder barrel and said second cylinder barrel is equipped with the cylinder barrel bracing or strutting arrangement.
Preferably, in the assembled hydraulic cylinder of above-mentioned double acting cross section, the head of said first cylinder barrel and said second cylinder barrel is equipped with the sealing cylinder head.
Can find out that from above-mentioned technical scheme the double acting cross section assembled hydraulic cylinder that the utility model provides has removed the speedup cylinder; At former piston rod set inside one plunger; At former piston place sealing is set and forms a single-action plunger piston cylinder, the chamber, heavy in section leads to top petrol tank through an electric control one-way valve, makes simple in structure; Reduce equipment volume, layout is attractive in appearance.Save a speedup cylinder and practiced thrift cost, pressure oil acts directly on the actuating strut, makes response fast, is convenient to accurate control position and speed.Reduced intermediate link, the oil leakage fault point is significantly reduced.Former oil cylinder is fixed with two ends, and cylinder head also need be provided with the seam and fixing keyway and screw hole of adjustment oil cylinder precision except arranging oil inlet and oil return hole, steam vent, piston packing, copper sheathing, guidance tape etc., and complex structure and processing request are higher.Oil cylinder after the improvement is fixed with the intermediate place, owing to do not had higher processing precision and higher requirement of strength, cylinder head is in piston rod packing and guiding layout and the copper sheathing, and fuel feed hole can be directly with on joint form setting and the cylinder barrel.
Description of drawings
The structural representation of the double acting cross section assembled hydraulic cylinder that Fig. 1 provides for the utility model embodiment.
The specific embodiment
The utility model discloses a kind of double acting cross section assembled hydraulic cylinder, to reduce manufacturing cost.
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
See also Fig. 1, the structural representation of the double acting cross section assembled hydraulic cylinder that Fig. 1 provides for the utility model embodiment.
The double acting cross section assembled hydraulic cylinder that the utility model provides comprises intermediate 1, first oil cylinder and second oil cylinder.Wherein, offer hydraulic cavities C on the intermediate 1, hydraulic cavities C is connected with top petrol tank 9 through electric control one-way valve 8, and on the direction of top petrol tank 9, electric control one-way valve 8 is in conducting state at hydraulic cavities C.
First oil cylinder is arranged at an end of intermediate 1, and first oil cylinder comprises first piston bar 4, first plunger 3 and first cylinder barrel 5; One end of first cylinder barrel 5 links to each other with intermediate 1, and its inner chamber communicates with hydraulic cavities C; First piston bar 4 is arranged in first cylinder barrel 5; And the one of which end is provided with first piston 2; First piston 2 is connected with the bore seal of first cylinder barrel 5, has first gap between the first piston bar 4 and first cylinder barrel 5, and first cylinder barrel 5 is provided with the second hydraulic fluid port B that communicates with first gap; First plunger 3 is a hollow tube, and the one of which end is connected with the first hydraulic fluid port A of intermediate 1, and the other end passes the intracavity inter-connection of first piston 2 and first piston bar 4.
Second oil cylinder is arranged at the other end of intermediate 1, and second oil cylinder comprises second piston rod, second plunger and second cylinder barrel; One end of second cylinder barrel links to each other with intermediate, and its inner chamber communicates with hydraulic cavities C; Second piston rod is arranged in second cylinder barrel, and the one of which end is provided with second piston, and second piston is connected with the bore seal of second cylinder barrel, has second gap between second piston rod and second cylinder barrel, and second cylinder barrel is provided with the 3rd hydraulic fluid port E that communicates with second gap; Second plunger is a hollow tube, and the one of which end is connected with the 4th hydraulic fluid port D of intermediate 1, and the other end passes the intracavity inter-connection of second piston and second piston rod.
The double acting cross section assembled hydraulic cylinder that the utility model provides; Removed the speedup cylinder,, at former piston place sealing has been set and forms a single-action plunger piston cylinder at former piston rod set inside one plunger; The chamber, heavy in section leads to top petrol tank through an electric control one-way valve; Make simple in structurely, reduce equipment volume, layout is attractive in appearance.Save a speedup cylinder and practiced thrift cost, pressure oil acts directly on the actuating strut, makes response fast, is convenient to accurate control position and speed.Reduced intermediate link, the oil leakage fault point is significantly reduced.Former oil cylinder is fixed with two ends, and cylinder head also need be provided with the seam and fixing keyway and screw hole of adjustment oil cylinder precision except arranging oil inlet and oil return hole, steam vent, piston packing, copper sheathing, guidance tape etc., and complex structure and processing request are higher.Oil cylinder after the improvement is fixed with the intermediate place, owing to do not had higher processing precision and higher requirement of strength, cylinder head is in piston rod packing and guiding layout and the copper sheathing, and fuel feed hole can be directly with on joint form setting and the cylinder barrel.
Cylinder barrel (first cylinder barrel 5 and second cylinder barrel) is logical to be connected with intermediate 1 one with platen 7 by key.Be processed with seam on the intermediate 1, guarantee the axiality and the perpendicularity of axis of two cylinder barrels (first cylinder barrel 5 and second cylinder barrel) axis and the intermediate 1 of first oil cylinder and second oil cylinder.Be processed with the platen very high on the plunger (first plunger 3 and second plunger) with axis verticality; Axle head accurately cooperates with hole on the intermediate 1, the platen of intermediate 1 and plunger (first plunger 3 and second plunger) is fixed together and the axiality and the perpendicularity of assurance and intermediate 1 through screw.Piston (first piston 2 and second piston) and piston rod (the first piston bar 4 and second piston rod) link together through seam and screw; Require piston rod and piston that higher axiality is arranged, wherein piston requires in processing to guarantee that outside piston and endoporus have higher axiality.Cylindrical cooperates with the interior circle of cylinder barrel, and interior circle cooperates with plunger.
The head of first cylinder barrel 5 and second cylinder barrel is equipped with sealing cylinder head 6; Sealing cylinder head 6 endoporus cooperate with piston rod (the first piston bar 4 and second piston rod); Outer hole also cylinder barrel (first cylinder barrel 5 and second cylinder barrel) endoporus cooperates, and through screw the flange and the cylinder barrel (first cylinder barrel 5 and second cylinder barrel) of sealing cylinder head 6 is linked together.
The afterbody of first cylinder barrel 5 and second cylinder barrel is equipped with the cylinder barrel end cap, and intermediate 1 is generally positioned on the base.The end of the first piston bar 4 and second piston rod is equipped with the piston rod end plate.
With first oil cylinder is the course of work of representative explanation the utility model:
First piston bar 4 is control objects of the utility model; The first hydraulic fluid port A gets into when the hydraulic oil warp, the second hydraulic fluid port B oil return, and fluid acts on first piston bar inner chamber through the hole in the middle of first plunger; Hydraulic cavities C opens through electric control one-way valve 8; From top petrol tank 9, suck hydraulic oil, first piston bar 4 stretches out, and the hydraulic oil active area is π D3
2/ 4 (D3 is the external diameter of first plunger); When the second hydraulic fluid port B oil-feed, the first hydraulic fluid port A oil return, fluid directly acts on the first piston 2 of first piston bar 4, and the hydraulic oil of hydraulic cavities C is pressed into top petrol tank 9 to hydraulic oil through electric control one-way valve 8,4 withdrawals of first piston bar, the hydraulic oil active area is π (D1
2-D2
2)/4 (D1 is the diameter of bore of first cylinder barrel 5, and D2 is the external diameter of first piston bar 4).Because these two cross sections are less, make oil cylinder obtain responsiveness faster.When moulding machine needs high compaction force in the compacting operation; The first hydraulic fluid port A, the 4th hydraulic fluid port D oil-feed, the second hydraulic fluid port B, the 3rd hydraulic fluid port E oil return, pressure oil makes the first hydraulic fluid port A be communicated with hydraulic cavities C through squeeze valve simultaneously; Electric control one-way valve 8 is closed simultaneously, and the effective active area of hydraulic oil is π (D1
2-D3
2)/4+ π D3
2/ 4=π D1
2/ 4, make piston rod obtain high compaction force.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (5)
1. a double acting cross section assembled hydraulic cylinder is characterized in that, comprising:
Intermediate (1) offers hydraulic cavities (C) on it, said hydraulic cavities (C) is connected with top petrol tank (9) through electric control one-way valve (8), and on the direction of said top petrol tank (9), said electric control one-way valve (8) is in conducting state in said hydraulic cavities (C);
Be arranged at first oil cylinder of said intermediate (1) one end, said first oil cylinder comprises first piston bar (4), first plunger (3) and first cylinder barrel (5); One end of said first cylinder barrel (5) links to each other with said intermediate (1), and its inner chamber communicates with said hydraulic cavities (C); Said first piston bar (4) is arranged in said first cylinder barrel (5); And the one of which end is provided with first piston (2); Said first piston (2) is connected with the bore seal of said first cylinder barrel (5); Have first gap between said first piston bar (4) and said first cylinder barrel (5), said first cylinder barrel (5) is provided with second hydraulic fluid port (B) that communicates with said first gap; Said first plunger (3) is a hollow tube, and the one of which end is connected with first hydraulic fluid port (A) of said intermediate (1), and the other end passes the intracavity inter-connection of said first piston (2) and said first piston bar (4);
Be arranged at second oil cylinder of said intermediate (1) other end, said second oil cylinder comprises second piston rod, second plunger and second cylinder barrel; One end of said second cylinder barrel links to each other with said intermediate, and its inner chamber communicates with said hydraulic cavities (C); Said second piston rod is arranged in said second cylinder barrel; And the one of which end is provided with second piston; Said second piston is connected with the bore seal of said second cylinder barrel; Have second gap between said second piston rod and said second cylinder barrel, said second cylinder barrel is provided with the 3rd hydraulic fluid port (E) that communicates with said second gap; Said second plunger is a hollow tube, and the one of which end is connected with the 4th hydraulic fluid port (D) of said intermediate (1), and the other end passes the intracavity inter-connection of said second piston and said second piston rod.
2. double acting according to claim 1 cross section assembled hydraulic cylinder is characterized in that the afterbody of said first cylinder barrel (5) and said second cylinder barrel is equipped with the cylinder barrel end cap.
3. double acting according to claim 1 cross section assembled hydraulic cylinder is characterized in that said intermediate (1) is arranged on the base.
4. double acting according to claim 1 cross section assembled hydraulic cylinder is characterized in that the periphery of said first cylinder barrel (5) and said second cylinder barrel is equipped with the cylinder barrel bracing or strutting arrangement.
5. double acting according to claim 1 cross section assembled hydraulic cylinder is characterized in that the head of said first cylinder barrel (5) and said second cylinder barrel is equipped with the sealing cylinder head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200096068U CN202527664U (en) | 2012-01-11 | 2012-01-11 | Double-acting section combined hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200096068U CN202527664U (en) | 2012-01-11 | 2012-01-11 | Double-acting section combined hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202527664U true CN202527664U (en) | 2012-11-14 |
Family
ID=47128870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200096068U Expired - Fee Related CN202527664U (en) | 2012-01-11 | 2012-01-11 | Double-acting section combined hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202527664U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368768A (en) * | 2014-11-04 | 2015-02-25 | 胡建波 | Hydraulic system, vertical parting molding machine and control method |
-
2012
- 2012-01-11 CN CN2012200096068U patent/CN202527664U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368768A (en) * | 2014-11-04 | 2015-02-25 | 胡建波 | Hydraulic system, vertical parting molding machine and control method |
| CN104368768B (en) * | 2014-11-04 | 2018-07-13 | 永红保定铸造机械有限公司 | A kind of hydraulic system, vertical parting molding machine and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20210111 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |