CN218913337U - Positioning oil cylinder - Google Patents
Positioning oil cylinder Download PDFInfo
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- CN218913337U CN218913337U CN202222984223.9U CN202222984223U CN218913337U CN 218913337 U CN218913337 U CN 218913337U CN 202222984223 U CN202222984223 U CN 202222984223U CN 218913337 U CN218913337 U CN 218913337U
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- piston rod
- copper sleeve
- positioning
- cylinder
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Abstract
The utility model belongs to the technical field of hydraulic pressure, and particularly relates to a positioning oil cylinder which comprises a cylinder body and a piston rod movably arranged in the cylinder body; the positioning oil cylinder also comprises a copper sleeve; the copper bush is arranged in the cylinder body, the copper bush is provided with an inner ring and an outer ring, the inner ring of the copper bush is arranged around the piston rod, and the inner ring of the copper bush is attached to the outer side surface of the piston rod; the copper sleeve is provided with a strip-shaped groove which is used for communicating the inner ring of the copper sleeve with the outer ring of the copper sleeve; the copper sleeve is arranged around the piston rod, so that the gap between the piston rod and the cylinder body is reduced, and the shaking of the piston rod is reduced, and the piston rod is adjusted and positioned; the copper bush is additionally provided with the strip-shaped groove, so that the copper bush can slightly deform within a set range, and at the moment, the copper bush can tightly cling to the outer side of the piston rod to expand, position and maintain the pressure of the piston rod, so that the piston rod is always stable, and the situation that the piston rod shakes is avoided.
Description
Technical Field
The utility model belongs to the technical field of hydraulic pressure, and particularly relates to a positioning oil cylinder.
Background
The hydraulic cylinder rod is a moving part with frequent movement and high technical requirements, and the quality of the processing quality of each accessory on the hydraulic cylinder rod directly influences the service life and the reliability of the whole product. Chinese patent No. CN201220676060.1 discloses a copper sleeve structure for a shifting mold cylinder, "it includes a piston rod assembly, a cylinder front cover, a cylinder body, a cylinder rear cover, a copper sleeve, a dust seal, an oil seal, a wear ring, and an oil seal. The front cover of the oil cylinder is arranged at the front end of the oil cylinder body; the rear cover of the oil cylinder is arranged at the rear end of the oil cylinder body; the piston rod assembly is arranged inside the oil cylinder body; the copper sleeve is arranged at the forefront end of the front cover of the oil cylinder and is matched with the lubrication hole to perform timing lubrication; the dust seal, the oil seal, the wear-resistant ring and the oil seal are sequentially arranged behind the copper sleeve in the front cover of the oil cylinder; when the mold shifting oil cylinder is in a closed state, a piston rod of the mold shifting oil cylinder is easy to slightly shake in a state of not being subjected to hydraulic pressure, when the mold shifting oil cylinder is started again, the piston rod of the mold shifting oil cylinder is instantly subjected to hydraulic pressure to rapidly extend, and if the piston rod of the mold shifting oil cylinder is in contact with a workpiece in a short stroke and positions the workpiece, the piston rod of the mold shifting oil cylinder is easy to slightly displace in the extending process to influence the positioning function.
Disclosure of Invention
The utility model aims to provide a positioning oil cylinder and aims to solve the technical problem that the positioning accuracy of an oil cylinder in the prior art is not high enough.
In order to achieve the above purpose, the embodiment of the utility model provides a positioning oil cylinder, which comprises a cylinder body and a piston rod movably arranged in the cylinder body; the positioning oil cylinder further comprises a copper sleeve; the copper sleeve is arranged in the cylinder body, the copper sleeve is provided with an inner ring and an outer ring, the inner ring of the copper sleeve is arranged around the piston rod, and the inner ring of the copper sleeve is attached to the outer side face of the piston rod; the copper sleeve is provided with a strip-shaped groove, and the strip-shaped groove communicates the inner ring of the copper sleeve with the outer ring of the copper sleeve.
Optionally, the inner ring of the copper sleeve is provided with a groove.
Optionally, the groove of the copper sleeve inner ring is a spiral groove.
Optionally, a positioning hole is formed in the end portion of the copper sleeve, and the positioning hole is formed between the inner ring of the copper sleeve and the outer ring of the copper sleeve.
Optionally, the end part of the outer ring of the copper sleeve extends outwards to form a positioning convex edge, and the positioning convex edge is abutted with the inner side surface of the cylinder body; the positioning hole is arranged on the positioning convex edge.
Optionally, the middle part of cylinder body is equipped with the slip passageway, the piston rod with the copper sheathing is all located in the slip passageway, the first end of piston rod is connected with the piston, the second end of piston rod is connected with the thimble that is used for the location work piece.
Optionally, the first end of the cylinder body is provided with an oil cylinder upper cover, the oil cylinder upper cover is provided with an oil inlet, and the oil inlet is communicated with the sliding channel; the second end of the cylinder body is provided with an oil cylinder lower cover, and the second end of the piston rod is arranged in the oil cylinder lower cover in a penetrating way; and an oil return port is arranged on the outer side surface of the cylinder body close to the second end of the cylinder body, and the oil return port is communicated with the sliding channel.
Optionally, a pressure maintaining port is formed in the outer side face of the cylinder body, and the pressure maintaining port is communicated with the sliding channel.
Optionally, at least two strip-shaped grooves are provided.
Optionally, the copper sleeve is arranged in a circular ring structure.
The above technical solutions in the positioning cylinder provided by the embodiments of the present utility model have at least one of the following technical effects: the copper sleeve is additionally arranged in the positioning oil cylinder, and the functions of adjusting, positioning, expanding and maintaining pressure of the piston rod are realized by adding the copper sleeve. Firstly, the copper bush is arranged around the piston rod, so that the gap between the piston rod and the cylinder body is reduced, and the shaking of the piston rod is reduced, and the piston rod is adjusted and positioned; secondly, add the bar groove on the copper sheathing and make the copper sheathing can produce slight deformation at the settlement within range, the copper sheathing can paste the outside of tight piston rod and expand tight location and pressurize to the piston rod this moment for the piston rod remains stable throughout, avoids the piston rod to take place the condition of rocking.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a positioning cylinder according to an embodiment of the present utility model.
Fig. 2 is a cross-sectional view of a positioning cylinder according to an embodiment of the present utility model.
Fig. 3 is a schematic structural diagram of a copper sleeve according to an embodiment of the present utility model.
FIG. 4 is a cross-sectional view of a copper sleeve according to an embodiment of the present utility model
Wherein, each reference sign in the figure:
10-cylinder 11-sliding channel 20-piston rod
21-piston 22-thimble 23-cylinder upper cover
24-oil inlet 25-oil cylinder lower cover 26-oil return port
27-pressure maintaining port 30-copper sleeve 31-inner ring
32-outer ring 33-bar-shaped groove 34-spiral groove
35-positioning convex edges 36-positioning holes.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to fig. 1 to 4 are exemplary and intended to illustrate embodiments of the present utility model and should not be construed as limiting the utility model.
In the description of the embodiments of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the embodiments of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.
In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.
In one embodiment of the present utility model, as shown in fig. 1 to 4, a positioning cylinder is provided, which includes a cylinder body 10 and a piston rod 20 movably installed in the cylinder body 10, wherein the piston rod 20 can slide relative to the cylinder body 10. The positioning cylinder also includes a copper sleeve 30. The copper bush 30 is arranged in the cylinder body 10, the copper bush 30 is provided with an inner ring 31 and an outer ring 32, the inner ring 31 of the copper bush 30 is arranged around the piston rod 20, and the inner ring 31 of the copper bush 30 is attached to the outer side surface of the piston rod 20; the copper sleeve 30 is provided with a strip-shaped groove 33, and the strip-shaped groove 33 communicates the inner ring 31 of the copper sleeve 30 with the outer ring 32 of the copper sleeve 30.
In the embodiment of the utility model, the copper sleeve 30 is additionally arranged in the positioning oil cylinder, and the functions of adjusting, positioning, expanding and maintaining pressure of the piston rod 20 are realized by additionally arranging the copper sleeve 30. Firstly, the copper sleeve 30 is arranged around the piston rod 20, so that the gap between the piston rod 20 and the cylinder body 10 is reduced, and the shaking of the piston rod 20 is reduced, and the piston rod 20 is adjusted and positioned; secondly, add bar groove 33 on the copper sheathing 30 and make copper sheathing 30 can produce slight deformation in the settlement within range, copper sheathing 30 can paste the outside of tight piston rod 20 at this moment and expand tight location and pressurize to piston rod 20 for piston rod 20 remains stable throughout, avoids piston rod 20 to take place the condition of rocking.
The positioning oil cylinder is applied to a shoe blank machine, and the shoe blank is positioned through the positioning oil cylinder, so that the precision requirement of shoe blank processing can be better ensured.
It should be understood that the oil pressure starts, the piston rod 20 starts to work, the piston rod 20 can prop up the shoe blank, the speed is faster and the cutting amount is large because the shoe blank has larger impact force in the processing process, at this time, the copper bush 30 in the cylinder 10 props up the piston rod 20, the stability of the piston rod 20 can be improved, and the precision in the processing process is ensured; the oil pressure is closed, the piston rod 20 stops working, the gas in the cylinder body 10 is extracted to enable the cylinder body 10 to be in a vacuum state, negative pressure is arranged between the copper sleeve 30 and the piston rod 20, the copper sleeve 30 slightly deforms under the negative pressure and is tightly attached to the outer side face of the piston rod 20, and therefore the piston rod 20 is positioned, and the piston rod 20 can still keep a stable state in a working state or in a stop working state.
In another embodiment of the utility model, the inner ring 31 of the copper sleeve 30 of the positioning cylinder is provided with grooves. Specifically, the groove of the inner ring 31 of the copper sleeve 30 is a spiral groove 34. The spiral groove 34 is arranged around the piston rod 20, so that the outer circumference of the piston rod 20 is stressed uniformly, the stability of the piston rod 20 is further improved, and the positioning effect of the copper sleeve 30 is further enhanced.
In another embodiment of the present utility model, a positioning hole 36 is formed at the end of the copper sleeve 30 of the positioning cylinder, and the positioning hole 36 is disposed between the inner ring 31 of the copper sleeve 30 and the outer ring 32 of the copper sleeve 30; the copper bush 30 is positioned and connected with the cylinder body 10 through the positioning hole 36, so that the assembly is convenient, and the assembly efficiency of the positioning oil cylinder is improved.
In another embodiment of the utility model, the end part of the outer ring 32 of the copper sleeve 30 of the positioning oil cylinder extends outwards to form a positioning convex edge 35, the positioning convex edge 35 is abutted with the inner side surface of the cylinder body 10, and the positioning hole 36 is arranged on the positioning convex edge 35, so that the structure is reasonable in design and good in stability.
In another embodiment of the present utility model, a sliding channel 11 is provided in the middle of the cylinder body 10 of the positioning cylinder, a piston rod 20 and a copper sleeve 30 are both disposed in the sliding channel 11, a first end of the piston rod 20 is connected with a piston 21, and a second end of the piston rod 20 is connected with a thimble 22 for positioning a workpiece. Specifically, the copper bush 30 is mounted to a position close to the second end of the piston rod 20, the outer ring 32 of the copper bush 30 is sealed with the inner wall of the cylinder 10, the gas in the sliding channel 11 is extracted to make the sliding channel 11 in a negative pressure state, and negative pressure is formed between the inner ring 31 of the copper bush 30 and the outer side surface of the piston rod 20.
In another embodiment of the present utility model, the first end of the cylinder body 10 of the positioning cylinder is provided with a cylinder upper cover 23, the cylinder upper cover 23 is provided with an oil inlet 24, and the oil inlet 24 is communicated with the sliding channel 11; the second end of the cylinder body 10 is provided with an oil cylinder lower cover 25, and the second end of the piston rod 20 is penetrated in the oil cylinder lower cover 25; the cylinder 10 is provided with an oil return port 26 on the outer side surface near the second end thereof, and the oil return port 26 communicates with the sliding passage 11.
In another embodiment of the present utility model, the outer side surface of the cylinder body 10 of the positioning cylinder is provided with a pressure maintaining port 27, and the pressure maintaining port 27 is communicated with the sliding channel 11. The pressure maintaining port 27 is connected with a pressure maintaining pipe for maintaining the working pressure of the cylinder 10 stable all the time, and the pressure maintaining pipe realizes pressure maintaining by supplementing oil into the cylinder 10.
In another embodiment of the present utility model, the bar-shaped groove 33 of the positioning cylinder is provided with at least two; in this embodiment, four bar-shaped grooves 33 are provided, and the bar-shaped grooves 33 are provided to extend along the first end of the copper sleeve 30 toward the second end thereof.
In another embodiment of the present utility model, the copper sleeve 30 of the positioning cylinder is arranged in a circular ring structure; the piston rod 20 is adapted to the shape and diameter of the inner ring 31 of the copper sleeve 30.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. A positioning oil cylinder comprises a cylinder body and a piston rod movably arranged in the cylinder body; the method is characterized in that: the positioning oil cylinder further comprises a copper sleeve; the copper sleeve is arranged in the cylinder body, the copper sleeve is provided with an inner ring and an outer ring, the inner ring of the copper sleeve is arranged around the piston rod, and the inner ring of the copper sleeve is attached to the outer side face of the piston rod; the copper sleeve is provided with a strip-shaped groove, and the strip-shaped groove communicates the inner ring of the copper sleeve with the outer ring of the copper sleeve.
2. The positioning cylinder according to claim 1, characterized in that: the inner ring of the copper sleeve is provided with a groove.
3. The positioning cylinder according to claim 2, characterized in that: the groove of the copper sleeve inner ring is a spiral groove.
4. The positioning cylinder according to claim 1, characterized in that: the end part of the copper sleeve is provided with a positioning hole, and the positioning hole is arranged between the inner ring of the copper sleeve and the outer ring of the copper sleeve.
5. The positioning cylinder as set forth in claim 4, wherein: the end part of the outer ring of the copper sleeve extends outwards to form a positioning convex edge, and the positioning convex edge is abutted with the inner side surface of the cylinder body; the positioning hole is arranged on the positioning convex edge.
6. The positioning cylinder according to any one of claims 1 to 5, characterized in that: the middle part of cylinder body is equipped with the slip passageway, the piston rod with the copper sheathing is all located in the slip passageway, the first end of piston rod is connected with the piston, the second end of piston rod is connected with the thimble that is used for the location work piece.
7. The positioning cylinder as set forth in claim 6, wherein: the first end of the cylinder body is provided with an oil cylinder upper cover, the oil cylinder upper cover is provided with an oil inlet, and the oil inlet is communicated with the sliding channel; the second end of the cylinder body is provided with an oil cylinder lower cover, and the second end of the piston rod is arranged in the oil cylinder lower cover in a penetrating way; and an oil return port is arranged on the outer side surface of the cylinder body close to the second end of the cylinder body, and the oil return port is communicated with the sliding channel.
8. The positioning cylinder as set forth in claim 6, wherein: the outer side face of the cylinder body is provided with a pressure maintaining port, and the pressure maintaining port is communicated with the sliding channel.
9. The positioning cylinder according to any one of claims 1 to 5, characterized in that: the strip-shaped grooves are at least two.
10. The positioning cylinder according to any one of claims 1 to 5, characterized in that: the copper bush is arranged in a circular ring structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222984223.9U CN218913337U (en) | 2022-11-09 | 2022-11-09 | Positioning oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222984223.9U CN218913337U (en) | 2022-11-09 | 2022-11-09 | Positioning oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218913337U true CN218913337U (en) | 2023-04-25 |
Family
ID=86049703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222984223.9U Active CN218913337U (en) | 2022-11-09 | 2022-11-09 | Positioning oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218913337U (en) |
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2022
- 2022-11-09 CN CN202222984223.9U patent/CN218913337U/en active Active
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