CN219754954U - Controllable multi-cavity multi-action hydraulic cylinder - Google Patents
Controllable multi-cavity multi-action hydraulic cylinder Download PDFInfo
- Publication number
- CN219754954U CN219754954U CN202321164222.8U CN202321164222U CN219754954U CN 219754954 U CN219754954 U CN 219754954U CN 202321164222 U CN202321164222 U CN 202321164222U CN 219754954 U CN219754954 U CN 219754954U
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- piston
- rear end
- inner cavity
- oil
- end cover
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- 238000007789 sealing Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 abstract description 7
- 238000004512 die casting Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 37
- 239000010720 hydraulic oil Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model relates to a controllable multi-cavity multi-action hydraulic cylinder which is provided with a cylinder barrel, a front end cover and a rear end cover, wherein a piston rod is arranged in an inner hole of the front end cover in a sliding manner, a front oil hole is formed in the side wall of the front end cover, a rear oil hole is formed in the side wall of the rear end cover, a first piston is arranged in a first inner cavity surrounded by the inner cavity of the cylinder barrel, the front end cover and the rear end cover in a sliding manner, a second inner cavity sealed and separated from the first inner cavity is arranged in the first piston, a second piston is arranged in the second inner cavity in a sliding manner, the inner end of the piston rod extends into the second inner cavity and is fixedly connected with the front end face of the second piston, a first oil pipe for communicating oil to the front end of the second piston is connected with the rear end of the second piston. According to the utility model, through oil inlet control, the movement of the first piston in the first inner cavity and the movement of the second piston in the second inner cavity are respectively correspondingly pushed, so that the multi-action extension or retraction movement of the piston rod is realized, and the functional requirements of extrusion core pulling in the die casting process are met.
Description
Technical Field
The utility model relates to the technical field of hydraulic cylinders, in particular to a controllable multi-cavity multi-action hydraulic cylinder for the die casting industry.
Background
In the die casting process, under certain specific technical requirements, the oil cylinder is required to realize the action of two or more times, namely the action of forward extrusion after the main shaft is extruded in place is completed. The inside of the structure of traditional twice action hydro-cylinder generally is provided with two inner chambers, adopts two independent piston rods, reaches the operation requirement of extrusion re-extrusion through the action sequence of control main, vice piston rod, but the hydro-cylinder of this kind of structure can only realize the secondary extrusion action mostly, and the action sequence is uncontrollable, if relate to the core-pulling when needing many times sequential action, because the multiaxis design structure of its inside adoption, can't reach the operation requirement.
Disclosure of Invention
The utility model aims to solve the technical problems that: in order to overcome the defects in the prior art, the utility model provides a controllable multi-cavity multi-action hydraulic cylinder capable of realizing the multi-action extrusion core pulling function.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a controllable multi-cavity multi-action hydraulic cylinder, has the cylinder, and the cylinder front end is sealed to be fixed with the front end housing, the rear end is sealed to be fixed with the rear end housing, and the interior hole sliding of front end housing is equipped with the piston rod, has seted up preceding oilhole on the front end housing lateral wall, has seted up the back oilhole on the rear end housing lateral wall, cylinder inner chamber, the first intracavity that front end housing and rear end housing enclose slide and be equipped with first piston, the second inner chamber that separates with first inner chamber is sealed to be equipped with the second piston in the second inner chamber, the piston rod inner stretches into in the second inner chamber and the preceding terminal surface rigid coupling of second piston, the second piston rear end is connected with the first oil pipe that leads to oil to the second piston front end, first piston rear end is connected with the second oil pipe that leads to oil to the second piston rear end.
Preferably, the second piston, the first oil pipe and the piston rod are of an integrated structure.
Further, the open end of the second inner cavity is connected with a threaded guide sleeve in a sealing way, and the piston rod is in sliding fit with an inner hole of the threaded guide sleeve.
The beneficial effects of the utility model are as follows: according to the utility model, through controlling the oil inlets of the front oil hole, the rear oil hole, the first oil pipe and the second oil pipe, the movement of the first piston in the first inner cavity and the movement of the second piston in the second inner cavity are respectively correspondingly pushed, so that the multi-action extending or retracting movement of the piston rod is realized, and the functional requirements of extrusion core pulling in the die casting process are met.
Drawings
The utility model will be further described with reference to the drawings and embodiments.
Fig. 1 is a schematic view of the piston rod according to the present utility model in a state of extension.
In the figure: 1. the cylinder barrel comprises a cylinder barrel, a front end cover, a rear end cover, a piston rod, a front oil hole, a rear oil hole, a first inner cavity, a first piston, a second inner cavity, a second piston, a first oil pipe, a second oil pipe and a threaded guide sleeve.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.
The controllable multi-cavity multi-action hydraulic cylinder shown in fig. 1 comprises a cylinder barrel 1, a front end cover 2, a rear end cover 3 and a piston rod 4, wherein the front end cover 2 is fixedly connected with the front end of the cylinder barrel 1 in a sealing way, the rear end cover 3 is fixedly arranged at the rear end of the cylinder barrel 1 in a sealing way, the piston rod 4 slides with an inner hole of the front end cover 2 and stretches into the cylinder barrel 1, a front oil hole 5 is formed in the side wall of the front end cover 2, and a rear oil hole 6 is formed in the side wall of the rear end cover 3.
The inner cavity of the cylinder barrel 1 between the front end cover 2 and the rear end cover 3 forms a first inner cavity 7 of the oil cylinder, a first piston 8 is arranged in the first inner cavity 7 in a sliding mode, a second inner cavity 9 with an opening facing the front end cover 2 is arranged in the first piston 8, a threaded guide sleeve 13 for sealing and separating the first inner cavity 7 from the second inner cavity 9 is connected to the open end of the second inner cavity 9, and a second piston 10 is arranged in the second inner cavity 9 in a sliding mode.
The second inner cavity 9 is slidably provided with a second piston 10, and the inner end of the piston rod 4 is fixedly connected with the front end surface of the second piston 10 by extending into the second inner cavity 9 after being slidably matched with the inner hole of the threaded guide sleeve 13.
The rear end face of the second piston 10 is connected with a first oil pipe 11 which is used for communicating oil to the front end of the second piston 10, the rear end of the first piston 8 is connected with a second oil pipe 12 which is used for communicating oil to the rear end of the second piston 10, the outer ends of the first oil pipe 11 and the second oil pipe 12 are both positioned outside the rear end cover 3, and the outer ends of the first oil pipe 11 and the second oil pipe 12 are both provided with oil ports.
In order to simplify the manufacturing, the second piston 10, the first oil pipe 11 and the piston rod 4 are integrated.
When hydraulic oil is introduced through the rear oil hole 6, the first piston 8 drives the second piston 10 and the piston rod 4 to move forwards, and when hydraulic oil is introduced through the front oil hole 5, the first piston 8 drives the second piston 10 and the piston rod 4 to move backwards; when hydraulic oil passes through the second oil pipe 12, the second piston 10 and the piston rod 4 can be pushed to move forwards, and when the hydraulic oil passes through the first oil pipe 11, the second piston 10 and the piston rod 4 can be pushed to move backwards, so that the multi-action extension or retraction of the piston rod 4 can be realized by controlling the oil feeding of the front oil hole 5, the rear oil hole 6, the first oil pipe 11 and the second oil pipe 12.
With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (3)
1. The utility model provides a controllable multi-chamber multi-action hydraulic cylinder, has cylinder (1), and cylinder (1) front end seal is fixed with front end housing (2), rear end seal is fixed with rear end housing (3), and the hole of front end housing (2) is interior to slide and is equipped with piston rod (4), has seted up preceding oilhole (5) on front end housing (2) lateral wall, has seted up back oilhole (6), characterized by on rear end housing (3) lateral wall: the cylinder barrel (1) inner chamber, first inner chamber (7) that front end housing (2) and rear end housing (3) enclose slide and be equipped with first piston (8), set up in first piston (8) with first inner chamber (7) seal the second inner chamber (9) that separates, slide and be equipped with second piston (10) in second inner chamber (9), piston rod (4) inner stretch into in second inner chamber (9) with second piston (10) preceding terminal surface rigid coupling, second piston (10) rear end face is connected with first oil pipe (11) that lead to second piston (10) front end oil, first piston (8) rear end is connected with second oil pipe (12) that lead to second piston (10) rear end oil.
2. A controllable multi-chamber, multi-acting hydraulic ram according to claim 1, wherein: the second piston (10), the first oil pipe (11) and the piston rod (4) are of an integrated structure.
3. A controllable multi-chamber, multi-acting hydraulic ram according to claim 2, wherein: the open end of the second inner cavity (9) is connected with a threaded guide sleeve (13) in a sealing way, and the piston rod (4) is in sliding fit with an inner hole of the threaded guide sleeve (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321164222.8U CN219754954U (en) | 2023-05-15 | 2023-05-15 | Controllable multi-cavity multi-action hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321164222.8U CN219754954U (en) | 2023-05-15 | 2023-05-15 | Controllable multi-cavity multi-action hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219754954U true CN219754954U (en) | 2023-09-26 |
Family
ID=88086583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321164222.8U Active CN219754954U (en) | 2023-05-15 | 2023-05-15 | Controllable multi-cavity multi-action hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219754954U (en) |
-
2023
- 2023-05-15 CN CN202321164222.8U patent/CN219754954U/en active Active
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