CN100423928C - Injection moulding machine mode-locking hydraulic cylinder with hydraulic safety device - Google Patents
Injection moulding machine mode-locking hydraulic cylinder with hydraulic safety device Download PDFInfo
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- CN100423928C CN100423928C CNB2005100613891A CN200510061389A CN100423928C CN 100423928 C CN100423928 C CN 100423928C CN B2005100613891 A CNB2005100613891 A CN B2005100613891A CN 200510061389 A CN200510061389 A CN 200510061389A CN 100423928 C CN100423928 C CN 100423928C
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- oil cylinder
- piston
- spool
- safety device
- locking oil
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Abstract
The present invention relates to a mold-locking oil cylinder of an injection molding machine with a hydraulic safety device, which is designed for increasing the protection level of the existing mold-locking oil cylinder. The mold-locking oil cylinder of an injection molding machine with a hydraulic safety device comprises an oil cylinder, a piston and an electric protective device, wherein a piston rod is fixed on one side of the piston, and the piston is divided into a rod chamber and a rodless chamber. The joint head of the piston rod and the piston is provided with a channel from the rod chamber to the rodless chamber; a unidirectional sealing mechanism is arranged on the head of the channel; one end of the oil cylinder is correspondingly connected with a mold-locking limit rod; when the piston moves to the specified position, the mold-locking limit rod supports the unidirectional elastic sealing mechanism. The present invention has the advantages that a hydraulic safety device is added in the mold-locking oil cylinder, and the hydraulic safety device performs action when the electric safety mechanism fails. Thus, the safety of the machine is high, and the accidents of the mold-locking oil cylinder are radically stopped. Accordingly, the damage to the mold-locking oil cylinder of the injection molding machine is prevented, and economic loss is reduced. The increased hydraulic safety device has the advantages of simple structure and low cost.
Description
Technical field
The present invention relates to a kind of injection moulding machine mode-locking oil cylinder, particularly a kind of injection moulding machine mode-locking oil cylinder with hydrostatic safety device.
Background technology
Existing Mode-locking oil cylinder all has electric protective device; its locked mode stroke adopts the electic protection mode to carry out separately; but because the electric elements of electric protective device easily go wrong; after particularly in poor environments such as machine humidity, moving for many years; electric elements are easily aging or slow in reacting; and in a single day electric protective device goes wrong, and will cause oil cylinder to damage, and produces bigger economic loss.
Summary of the invention
Technical problem to be solved by this invention is to overcome the above-mentioned defective of prior art and a kind of safer injection moulding machine mode-locking oil cylinder is provided.
The present invention solves the problems of the technologies described above the technical scheme that is adopted:
The injection moulding machine mode-locking oil cylinder of band hydrostatic safety device, comprise piston one side fixed piston rod and be divided into the oil cylinder of rod chamber and rodless cavity by piston, the head of described piston rod and piston junction is opened a passage from rod chamber to rodless cavity, described passage head is established an one-way sealing mechanism, the corresponding end at oil cylinder connects the locked mode gag lever post, when piston moved to assigned position, the locked mode gag lever post backed down one-way sealing mechanism.
When the injection moulding machine mode-locking oil cylinder normally moved, owing to the one-way sealing device that is provided with between rod chamber and rodless cavity, so the liquid that can not of rod chamber entered rodless cavity, the Mode-locking oil cylinder operate as normal.
When the electric position-limit mechanism of Mode-locking oil cylinder lost efficacy, piston continues to move to the top of oil cylinder under the effect of hydraulic oil, when running into the locked mode gag lever post, its one-way sealing mechanism will be backed down by the locked mode gag lever post, therefore the highly pressurised liquid of rod chamber just can flow to rodless cavity from rod chamber by the passage on the piston rod, piston just can lose the power that advances owing to the pressure release of rod chamber to be stopped, thereby prevents piston bursting oil cylinder top.
Compared with prior art, the invention has the advantages that: in Mode-locking oil cylinder, increase hydrostatic safety device, work in the time of can losing efficacy in electric insurance institution, can make machine safety higher like this, fundamentally stop the generation of Mode-locking oil cylinder accident, thereby prevent the damage of injection moulding machine mode-locking oil cylinder, reduce economic loss.
The hydrostatic safety device that increases is simple in structure, and cost is low.
Description of drawings
Fig. 1 is the structural representation of Mode-locking oil cylinder of the present invention.
Fig. 2 is the structural representation of one-way sealing device of the present invention with the hydraulic protector that backs down mechanism's composition.
View when Fig. 3 has an effect for Mode-locking oil cylinder electric switch of the present invention.
The view of Mode-locking oil cylinder when Fig. 4 opens for hydraulic protector of the present invention.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
As shown in Figure 1; the injection moulding machine mode-locking oil cylinder of band hydrostatic safety device; comprise piston 3 one side fixed piston rods 6 and be divided into the oil cylinder 2 and the electric protective device of rod chamber and rodless cavity by piston 3; described piston rod 6 one ends are fixed on the piston 3 by nut 5; piston rod 6 and the head of piston 3 junctions are opened a passage 61 from rod chamber to rodless cavity; described passage 61 heads are established an one-way sealing mechanism 1; corresponding on Mode-locking oil cylinder bonnet 4 fixing locked mode gag lever post 15; when piston moved to assigned position, locked mode gag lever post 15 backed down one-way sealing mechanism 1.
Above-mentioned one-way sealing mechanism 1 is made up of loam cake 11, first valve seat 12, spring 17, spool 13, passage 121 is arranged in the middle of the first valve seat 12, spring 17, spool 13 are successively set in its passage 121, and be fixed on by loam cake 11 on the passway 122 of first valve seat 12, in the middle of loam cake 11, the spool 13 passage is arranged all, the channel outlet of spool 13 is in the side, be through hole 131, its head sealing and seal with first valve base channel mouth 123 when closed with the passway 123 of first valve seat 12 opposite sides, spool 13 heads and first valve seat 12 inner chambers form space 124, with reference to figure 2 (no second valve seat 14).
Above-mentioned space 124 can be dwindled and/or first valve seat 12 inner chamber corresponding positions enlarge and form the passage that liquid passes through fast during as the cylinder rod chamber pressure release by spool 13 heads.
Just often, have between cover 11 spring 17 to support because spool 13 is caught up with, so the spring force of spring 17 makes spool 13 with the closely contact and with channel seal of the passway 123 of first valve seat 12, the flow direction rodless cavity of prevention piston rod chamber and release are with reference to figure 1.
For increasing stability, the second valve seat 14 of band inner passage can be set between first valve base channel mouth 23 and spool 13, second valve seat 14 is fixed on the passway 123 of first valve seat 12, and Fig. 2 is seen in the sealing of when head of spool 13 and second valve seat 14 passwaies are closed and second valve seat 14 passwaies.
Above-mentioned locked mode gag lever post 15 passes oil cylinder back cylinder cover 4 backs and is fixed by spacing gland 16, and so fixedly the locked mode gag lever post 5.
During normal the use, the injection machine programmed, and spacing by the electric stopping means of locked mode.In the time of locked mode, rod chamber advances hydraulic oil, promotes piston 3 and moves right, rodless cavity does not have oil pressure, and piston rod 6 marches to minimum distance between piston 3 and the Mode-locking oil cylinder bonnet 4 when being L, electric stopping means effect and spacing, piston 3 halts, as shown in Figure 3.
In case electric stopping means lost efficacy; piston rod 6 can continue to promote piston 3 and advance; when the distance at piston 3 and Mode-locking oil cylinder bonnet 4 is L1; spool 13 is withstood by locked mode gag lever post 15; piston rod moves on; then locked mode gag lever post 15 overcomes spring force and hydraulic fluid pressure and backs down spool; promptly the distance of piston 3 and Mode-locking oil cylinder bonnet 4 during less than L1 spool 13 open; hydraulic oil in the piston rod chamber enters into the piston rodless cavity; make the release of piston rod chamber, piston loses thrust, so just can stop piston to continue to advance to the right; play the effect of protection lock mould oil cylinder, see Fig. 4.
If there is not this Machine guarding, piston 3 will move on, and last bumps against with Mode-locking oil cylinder bonnet 4, because of its impulse force is very big, understands and back down oil cylinder bonnet 4 and damage Mode-locking oil cylinder.
Claims (6)
1. be with the injection moulding machine mode-locking oil cylinder of hydrostatic safety device; comprise piston one side fixed piston rod and be divided into the oil cylinder and the electric protective device of rod chamber and rodless cavity by piston; it is characterized in that: the head of described piston rod and piston junction is opened a passage from rod chamber to rodless cavity; described passage head is established an one-way sealing mechanism; the corresponding end at oil cylinder connects the locked mode gag lever post; when piston moved to assigned position, the locked mode gag lever post backed down unidirectional elastic packing mechanism.
2. the injection moulding machine mode-locking oil cylinder of band hydrostatic safety device as claimed in claim 1, it is characterized in that: described one-way sealing mechanism is made up of loam cake, spring, spool, first valve seat, passage is arranged in the middle of the first valve seat, spring, spool are successively set in the passage of first valve seat, and be fixed on by loam cake on the passway of first valve seat, passage is all arranged in the middle of loam cake, the spool, the channel outlet of spool is in the side, be through hole, the sealing of its head and with the passway of first valve seat opposite side when closed with the sealing of first valve base channel mouth, spool head and valve base cavity formation space.
3. the injection moulding machine mode-locking oil cylinder of band hydrostatic safety device as claimed in claim 2, it is characterized in that: the second valve seat that the band inner passage is set between described first valve base channel mouth and the spool, the second valve seat is fixed on the passway of first valve seat, seals with second valve base channel mouth when the head of spool and second valve base channel mouth are closed.
4. as the injection moulding machine mode-locking oil cylinder of claim 2 or 3 described band hydrostatic safety devices, it is characterized in that: described spool head and valve base cavity formation space are dwindled by the spool head and/or first valve base cavity corresponding position enlarges and forms.
5. as the injection moulding machine mode-locking oil cylinder of claim 1 or 2 or 3 described band hydrostatic safety devices, it is characterized in that: described locked mode gag lever post passes behind the oil cylinder and is fixed by spacing gland behind the cylinder.
6. the injection moulding machine mode-locking oil cylinder of band hydrostatic safety device as claimed in claim 4 is characterized in that: described locked mode gag lever post passes behind the oil cylinder and is fixed by spacing gland behind the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100613891A CN100423928C (en) | 2005-11-03 | 2005-11-03 | Injection moulding machine mode-locking hydraulic cylinder with hydraulic safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100613891A CN100423928C (en) | 2005-11-03 | 2005-11-03 | Injection moulding machine mode-locking hydraulic cylinder with hydraulic safety device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1762680A CN1762680A (en) | 2006-04-26 |
| CN100423928C true CN100423928C (en) | 2008-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100613891A Active CN100423928C (en) | 2005-11-03 | 2005-11-03 | Injection moulding machine mode-locking hydraulic cylinder with hydraulic safety device |
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| Country | Link |
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| CN (1) | CN100423928C (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1232829A (en) * | 1967-09-25 | 1971-05-19 | ||
| US4009983A (en) * | 1976-01-16 | 1977-03-01 | Arthur William Jacobs | Hydraulic mold clamping mechanism for injection molding machine |
| US4577484A (en) * | 1983-07-22 | 1986-03-25 | Clecim | Hydraulic safety device for a mechanism for closing up the rolls of a rolling mill |
| CN1033025A (en) * | 1987-09-30 | 1989-05-24 | 日精树脂工业株式会社 | Device for clamping mould |
| CN2690246Y (en) * | 2004-04-01 | 2005-04-06 | 肖公平 | Mine overhead passenger cableway |
| CN2868645Y (en) * | 2005-11-03 | 2007-02-14 | 宁波大港海天机械有限公司 | Moulding-machine mould-locking oil-tank with hydraulic safety device |
-
2005
- 2005-11-03 CN CNB2005100613891A patent/CN100423928C/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1232829A (en) * | 1967-09-25 | 1971-05-19 | ||
| US4009983A (en) * | 1976-01-16 | 1977-03-01 | Arthur William Jacobs | Hydraulic mold clamping mechanism for injection molding machine |
| US4577484A (en) * | 1983-07-22 | 1986-03-25 | Clecim | Hydraulic safety device for a mechanism for closing up the rolls of a rolling mill |
| CN1033025A (en) * | 1987-09-30 | 1989-05-24 | 日精树脂工业株式会社 | Device for clamping mould |
| CN2690246Y (en) * | 2004-04-01 | 2005-04-06 | 肖公平 | Mine overhead passenger cableway |
| CN2868645Y (en) * | 2005-11-03 | 2007-02-14 | 宁波大港海天机械有限公司 | Moulding-machine mould-locking oil-tank with hydraulic safety device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1762680A (en) | 2006-04-26 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wuxi haitian machinery Co., Ltd. Assignor: Ningbo Haitian Plastics Machinery Group Co., Ltd. Contract fulfillment period: 2008.12.1 to 2018.12.1 contract change Contract record no.: 2009320000843 Denomination of invention: Injection moulding machine mode-locking hydraulic cylinder with hydraulic safety device Granted publication date: 20081008 License type: Exclusive license Record date: 2009.5.12 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.12.1 TO 2018.12.1; CHANGE OF CONTRACT Name of requester: WUXI HAITIAN MACHINERY CO., LTD. Effective date: 20090512 |
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| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Xiaogang road Beilun 315821 Zhejiang Province, Ningbo City, No. 32 Patentee after: Haitian Plastics Machinery Ltd. Address before: 315821 Zhejiang city of Ningbo province Beilun Jiangnan export processing zone Patentee before: Ningbo Haitian Plastics Machinery Group Co., Ltd. |