CN203476906U - Improved oil cylinder - Google Patents
Improved oil cylinder Download PDFInfo
- Publication number
- CN203476906U CN203476906U CN201320571920.XU CN201320571920U CN203476906U CN 203476906 U CN203476906 U CN 203476906U CN 201320571920 U CN201320571920 U CN 201320571920U CN 203476906 U CN203476906 U CN 203476906U
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- oil
- oil pressure
- piston
- pressure chamber
- oil cylinder
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Abstract
The utility model relates to an improved oil cylinder which comprises an oil cylinder body, a piston and an oil cylinder cover. An oil pressure cavity, a transition cavity and an opening are arranged in the oil cylinder body, the oil cylinder cover is fixed to the opening of the oil cylinder body in a sealed mode so as to seal the oil pressure cavity and the transition cavity, the side face, in contact with the oil pressure cavity, of the piston is provided with a seal ring, the oil cylinder body is provided with a first oil inlet hole and a second oil inlet hole, the first oil inlet hole is formed in the side face of the transition cavity and is communicated with the transition cavity, the second oil inlet hole is formed in the side face of the rear end of the oil pressure cavity and is communicated with the oil pressure cavity, the inner diameter of the transition cavity is larger than that of the oil pressure cavity, and the transition cavity and the oil pressure cavity are in slope transition. When the improved oil cylinder is installed, the seal ring on the piston cannot be make contact with the oil inlet holes, completeness of the seal ring can be guaranteed, the sealing effect is guaranteed, and service life of the whole oil cylinder is prolonged.
Description
Technical field
The utility model relates to the oil cylinder for TOP-TIP, refers in particular to a kind of improved oil cylinder that prevents that seal ring is worn.
Background technique
In Hot runner Technology field, needle valve type hot runner to be to save material, plastic surface aesthetic, simultaneously internal soundness closely, intensity advantages of higher and being widely used.Along with the development of Hot runner Technology, needle valve type hot runner system is widely used in injection molding process.Oil cylinder is as the critical component of needle valve type hot runner system, and the optimal design of its structure, directly affects the using effect of TOP-TIP and the manufacture cost of TOP-TIP.Needle valve type oil cylinder in TOP-TIP, as shown in Figure 1, comprises cylinder body 1, and piston 2, needle 3 and oil cylinder cover 4 are provided with oil pressure chamber 5 in described cylinder body 1; Described cylinder body 1 is provided with the first filler opening 9 and the second filler opening 10; Described cylinder body 1 front end be provided with opening 11; Described oil pressure chamber 5 is communicated with opening 11; Described oil cylinder cover 4 sealings are fixed on opening 11 places of cylinder body 1, to seal oil pressure chamber 5; Described oil cylinder cover 4 is provided with piston mounting hole; Described piston 2, comprises piston only 6 and piston rod 7, and described piston only 6 is arranged in oil pressure chamber 5, and described piston only 6 can be in the interior movement in oil pressure chamber 5; Described piston rod 7 is through the piston mounting hole on oil cylinder cover 4; The side that described piston only 6 contacts with oil pressure chamber 7 is provided with seal ring 8, to prevent that the hydraulic oil in cylinder body 1 from flowing by the space between piston only 6 and cylinder body 1; The mounting hole inner side of described oil cylinder cover 4 is provided with guiding wear ring and piston packing; Needle 3 is fixed on the end of above-mentioned piston rod 7; During work, hydraulic oil enters by the first filler opening 9 space that cylinder body 1, piston only 6 and oil cylinder cover 4 surround, and piston 2 is moved to the left under the driving of hydraulic oil, and drives needle 3 to be moved to the left, and needle 3, away from injecting products, starts injection moulding; After injection moulding completes, hydraulic oil enters in the space that cylinder body 1 and piston only 6 surround by the second filler opening 10, and piston 2 moves right under the driving of hydraulic oil, and drives needle 3 to move right, and needle 3 cuts off sizing material at injecting products place, complete sealing.But, the first filler opening 9 on current cylinder body 1 is on the rubbing surface of piston only 6, when piston 3 is installed, seal ring 8, through the first filler opening 9, can expand in the first filler opening 9, firmly by meeting, make the edge of the first filler opening 9 shovel seal ring 8 inward, cause seal ring 8 to be shoveled out a breach (as shown in Figure 2), affect sealability, cause piston leakage of oil, finally cause piston motionless, cannot work.
Model utility content
The utility model object is that a kind of improved oil cylinder that prevents that seal ring is worn is provided in order to overcome the deficiencies in the prior art.
For achieving the above object, the technical solution adopted in the utility model is: a kind of improved oil cylinder, comprises cylinder body, piston and oil cylinder cover; In described cylinder body, be provided with oil pressure chamber; Described cylinder body front end be provided with opening; In the middle of described oil pressure chamber and opening, be provided with adapter cavity, described adapter cavity and oil pressure chamber and open communication; Described oil cylinder cover sealing is fixed on the opening of cylinder body, to seal oil pressure chamber and adapter cavity; Described oil cylinder cover is provided with piston mounting hole; Described piston, comprises piston only and piston rod, and described piston only is arranged in oil pressure chamber, and described piston rod is through the piston mounting hole on oil cylinder cover; Described piston only is provided with seal ring with the side that oil pressure chamber contacts; Described cylinder body is provided with the first filler opening and the second filler opening; Described the first filler opening is arranged on the sidepiece of adapter cavity, and is communicated with adapter cavity; Described the second filler opening is arranged on the rear end sidepiece in oil pressure chamber, and is communicated with oil pressure chamber; The internal diameter of described adapter cavity is larger than the internal diameter in oil pressure chamber; Between described adapter cavity and oil pressure chamber, pass through slope transition.
Preferably, the inwall joint in described slope and described adapter cavity and oil pressure chamber is provided with rounding.
Due to the utilization of technique scheme, the utility model compared with prior art has following advantages:
A kind of improved oil cylinder of the utility model scheme, compared with prior art, when piston being installed into the oil pressure chamber of cylinder body, because adapter cavity is larger than the internal diameter in oil pressure chamber, the internal diameter of adapter cavity is more bigger than the external diameter of seal ring, and adopts round and smooth slope transition between adapter cavity and oil pressure chamber, seal ring on piston can not shoveled by filler opening, can guarantee the integrity of seal ring, and then guarantee sealing effect, extend the working life of whole oil cylinder.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, technical solutions of the utility model are described further:
Accompanying drawing 1 is the structural representation of needle valve type oil cylinder in prior art;
Accompanying drawing 2 is the local enlarged diagram of needle valve type oil cylinder in prior art;
The structural representation that accompanying drawing 3 is a kind of improved oil cylinder of the present utility model;
The local enlarged diagram that accompanying drawing 4 is a kind of improved oil cylinder of the present utility model;
Accompanying drawing 5 is the structural representation of cylinder body in a kind of improved oil cylinder of the present utility model;
Wherein: 1, cylinder body; 2, piston; 3, needle; 4, oil cylinder cover; 5, the first filler opening; 6, the second filler opening; 7, piston only; 8, piston rod; 9, seal ring; 10, seal ring guiding slope; 11, opening; 12, adapter cavity; 13, slope.
embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
Accompanying drawing 3,4,5 is a kind of improved cylinder structure described in the utility model, comprises cylinder body 1, piston 2 and oil cylinder cover 3; In described cylinder body 1, be provided with oil pressure chamber 5; Described cylinder body 1 front end be provided with opening 11; Described oil pressure chamber 5 is provided with adapter cavity 12 with opening 11 is middle, and described adapter cavity 12 is communicated with oil pressure chamber 5 and opening 11; Described oil cylinder cover 4 sealings are fixed on opening 11 places of cylinder body 1, to seal oil pressure chamber 5 and adapter cavity 12; Described oil cylinder cover 4 is provided with piston mounting hole; Described piston 2, comprises piston only 6 and piston rod 7, and described piston only 6 is arranged in oil pressure chamber 5, and described piston rod 7 is through the piston mounting hole on oil cylinder cover 4; The side that described piston only 6 contacts with oil pressure chamber 5 is provided with seal ring 8; Described cylinder body 1 is provided with the first filler opening 9 and the second filler opening 10; Described the first filler opening 9 is arranged on the sidepiece of adapter cavity 12, and is communicated with adapter cavity 12; Described the second filler opening 10 is arranged on the rear end sidepiece in oil pressure chamber 5, and is communicated with oil pressure chamber 5; The internal diameter of described adapter cavity 12 is larger than the internal diameter in oil pressure chamber 5; Between described adapter cavity 5 and oil pressure chamber 12, pass through slope 13 transition; Described slope 13 is provided with rounding with the inwall joint in described adapter cavity 12 and oil pressure chamber 5.
Due to the utilization of technique scheme, the utility model compared with prior art has following advantages:
A kind of improved oil cylinder of the utility model scheme, compared with prior art, when piston being installed into the oil pressure chamber of cylinder body, because adapter cavity is larger than the internal diameter in oil pressure chamber, the internal diameter of adapter cavity is more bigger than the external diameter of seal ring, and adopts round and smooth slope transition between adapter cavity and oil pressure chamber, seal ring on piston can not shoveled by filler opening, can guarantee the integrity of seal ring, and then guarantee sealing effect, extend the working life of whole oil cylinder.
Below be only concrete exemplary applications of the present utility model, protection domain of the present utility model is not constituted any limitation.All employing equivalents or equivalence are replaced and the technological scheme of formation, within all dropping on the utility model rights protection scope.
Claims (2)
1. an improved oil cylinder, comprises cylinder body, piston and oil cylinder cover; In described cylinder body, be provided with oil pressure chamber; The front end of described cylinder body is provided with opening; In the middle of described oil pressure chamber and opening, be provided with adapter cavity, described adapter cavity and oil pressure chamber and open communication; Described oil cylinder cover sealing is fixed on the opening of cylinder body, to seal oil pressure chamber and adapter cavity; Described oil cylinder cover is provided with piston mounting hole; Described piston, comprises piston only and piston rod, and described piston only is arranged in oil pressure chamber, and described piston rod is through the piston mounting hole on oil cylinder cover; Described piston only is provided with seal ring with the side that oil pressure chamber contacts; Described cylinder body is provided with the first filler opening and the second filler opening; It is characterized in that: described the first filler opening is arranged on the sidepiece of adapter cavity, and be communicated with adapter cavity; Described the second filler opening is arranged on the rear end sidepiece in oil pressure chamber, and is communicated with oil pressure chamber; The internal diameter of described adapter cavity is larger than the internal diameter in oil pressure chamber; Between described adapter cavity and oil pressure chamber, pass through slope transition.
2. improved oil cylinder according to claim 1, is characterized in that: the inwall joint in described slope and described adapter cavity and oil pressure chamber is provided with rounding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320571920.XU CN203476906U (en) | 2013-09-16 | 2013-09-16 | Improved oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320571920.XU CN203476906U (en) | 2013-09-16 | 2013-09-16 | Improved oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203476906U true CN203476906U (en) | 2014-03-12 |
Family
ID=50225242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320571920.XU Expired - Lifetime CN203476906U (en) | 2013-09-16 | 2013-09-16 | Improved oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203476906U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511386A (en) * | 2013-09-16 | 2014-01-15 | 苏州好特斯模具有限公司 | Modified oil cylinder |
| CN106051279A (en) * | 2016-07-27 | 2016-10-26 | 苏州好特斯模具有限公司 | Square piston oil cylinder system with valve needle positioning function |
| CN114278637A (en) * | 2021-12-03 | 2022-04-05 | 浙江恒道科技有限公司 | Oil-gas dual-purpose cylinder and control system thereof |
-
2013
- 2013-09-16 CN CN201320571920.XU patent/CN203476906U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511386A (en) * | 2013-09-16 | 2014-01-15 | 苏州好特斯模具有限公司 | Modified oil cylinder |
| CN106051279A (en) * | 2016-07-27 | 2016-10-26 | 苏州好特斯模具有限公司 | Square piston oil cylinder system with valve needle positioning function |
| CN114278637A (en) * | 2021-12-03 | 2022-04-05 | 浙江恒道科技有限公司 | Oil-gas dual-purpose cylinder and control system thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140312 |