CN205148834U - Injection molding machine preformed back pressure control return circuit - Google Patents
Injection molding machine preformed back pressure control return circuit Download PDFInfo
- Publication number
- CN205148834U CN205148834U CN201520876809.0U CN201520876809U CN205148834U CN 205148834 U CN205148834 U CN 205148834U CN 201520876809 U CN201520876809 U CN 201520876809U CN 205148834 U CN205148834 U CN 205148834U
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- valve
- plug
- preformed
- overflow
- overflow valve
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- Expired - Fee Related
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses an injection molding machine preformed back pressure control return circuit, including injection switching -over valve, overflow valve and preformed valve, the preformed valve is installed in a valve piece, and characteristics are that the overflow valve is cartridge formula overflow valve, and cartridge formula overflow valve is installed on the valve piece, and cartridge formula overflow valve sets up at inserted valve plug -in components and cartridge valve gap including integrative, and the inserted valve plug -in components lie in the valve piece, and the cartridge valve gap lies in the valve piece, is provided with first overflow valve and check valve on the cartridge formula overflow valve, and first overflow valve setting is covered at the inserted valve. The advantage adopts cartridge formula overflow valve to replace traditional electromagnetic relief valve to realize preformed back pressure control, and cartridge formula overflow valve is small to can direct cartridge on the valve piece, reduced whole hydraulic circuit's volume and consumptive material volume effectively, simultaneously owing to directly be located the valve piece during inserted valve plug -in components of cartridge formula overflow valve, therefore can directly set up the oil circuit pipeline in the valve piece, thereby further reduce whole hydraulic circuit's whole volume, simplified the assembly process simultaneously.
Description
Technical field
The utility model relates to a kind of machine Control system loop, particularly relates to a kind of injection molding machine preplasticizing back pressure control loop.
Background technology
Current existing the injection moulding machine preforms backpressure control device, as shown in Figure 1, generally by injection reversal valve V1, overflow valve V2, electric control one-way valve V3, the compositions such as proportional pressure control valve V4, overflow valve V2 generally adopts board-like overflow valve, and the volume of board-like overflow valve is larger, in order to install this board-like overflow valve, general needs install transition block 3 additional between the main valve 1 and pilot valve 2 of introduction valve V1, this makes the overall volume of whole device large, consumptive material is many and occupation of land space is large, adopt board-like overflow valve in addition, oil circuit control (B to Y) needs external pipe arrangement, this makes the workload of assembling strengthen.
Summary of the invention
Technical problem to be solved in the utility model is to provide that a kind of structure is simple, consumptive material is few, small volume and the little injection molding machine preplasticizing back pressure control loop of assembly work amount.
The utility model solves the problems of the technologies described above adopted technical scheme:
A kind of injection molding machine preplasticizing back pressure control loop, comprise injection reversal valve, the overflow valve controlled for back pressure and preformed valve, described preformed valve is arranged in a valve block, described overflow valve is plug-in overflow valve, described plug-in overflow valve is arranged on described valve block, described plug-in overflow valve comprises and is wholely set at inserted valve plug-in unit and plug-in mounting valve gap, described inserted valve plug-in unit is positioned at described valve block, described plug-in mounting valve gap is positioned on described valve block, described plug-in overflow valve is provided with the first overflow valve and check valve, the first described overflow valve is arranged on described inserted valve and covers.
Described check valve is arranged in described plug-in mounting valve gap.Check valve is arranged in plug-in mounting valve gap, reasonably make use of the space of plug-in mounting valve gap, makes the structure of hydraulic circuit compacter.
Described check valve is hydraulic control one-way valve.Check valve adopts hydraulic control one-way valve, compared with the electric control one-way valve adopted in common injection molding machine preplasticizing back pressure control loop, can reduce the output point controlling computer, simplify control program.
Also comprise injection cylinder, described injection cylinder is connected with described injection reversal valve, be provided with many oil line pipes in described valve block, described plug-in overflow valve is connected with described injection cylinder with described injection reversal valve, described check valve, the first described overflow valve, described preformed valve respectively by described oil line pipe.Plug-in overflow valve, injection reversal valve, check valve, the first overflow valve, preformed valve is made to be communicated with the complete hydraulic circuit of formation one with injection cylinder by oil line pipe, and oil line pipe is arranged in valve plate, reasonably make use of the space of valve plate, decrease the use of outside pipe arrangement, simplify assembly process, make the structure of whole hydraulic circuit compacter.
Described preformed valve comprises plug-in preformed valve, described plug-in preformed valve comprises and is wholely set at plug-in mounting preformed valve plug-in unit and plug-in mounting preformed valve gap, described plug-in mounting preformed valve plug-in unit is positioned at described valve block, described plug-in mounting preformed valve gap is positioned on described valve block, described plug-in preformed valve is provided with the first preformed valve, and the first described preformed valve is arranged on described plug-in mounting preformed valve gap.First preformed valve is arranged on plug-in mounting preformed valve gap, reasonably make use of the space of plug-in mounting preformed valve gap, makes the structure of hydraulic circuit compacter.
Compared with prior art, the utility model has the advantage of: adopt plug-in overflow valve to substitute traditional electromagnetic relief valve and realize the control of preformed back pressure, plug-in overflow valve bulk volume is little, and can directly be inserted on valve block, efficiently reduce volume and the consumable quantity of whole hydraulic circuit, be located immediately in valve block during inserted valve plug-in unit simultaneously due to plug-in overflow valve, therefore directly oil line pipe can be set in valve block, thus further reduce the overall volume of whole hydraulic circuit, simplify assembly process simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of prior art;
Fig. 2 is schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.
As shown in Figure 2, a kind of injection molding machine preplasticizing back pressure control loop, comprise injection reversal valve 4, for back pressure control overflow valve 5 and preformed valve 6, preformed valve 6 is arranged in a valve block 7, overflow valve 5 is plug-in overflow valve, plug-in overflow valve is arranged on valve block 7, plug-in overflow valve comprises and is wholely set at inserted valve plug-in unit 51 and plug-in mounting valve gap 52, inserted valve plug-in unit 51 is positioned at valve block 7, plug-in mounting valve gap 52 is positioned on valve block 7, plug-in overflow valve is provided with the first overflow valve 8 and check valve 9, first overflow valve 8 is arranged on plug-in mounting valve gap 52.
In this particular embodiment, check valve 9 is arranged in plug-in mounting valve gap 52.Check valve 9 is arranged in plug-in mounting valve gap 52, reasonably make use of the space of plug-in mounting valve gap 52, makes the structure of hydraulic circuit compacter.
In this particular embodiment, check valve 9 is hydraulic control one-way valve.Check valve 9 adopts hydraulic control one-way valve, compared with the electric control one-way valve adopted in common injection molding machine preplasticizing back pressure control loop, can reduce the output point controlling computer, simplify control program.
In this particular embodiment, also comprise injection cylinder 10, injection cylinder 10 is connected with injection reversal valve 4, be provided with many oil line pipes in valve block 7, plug-in overflow valve is connected with injection cylinder 10 with injection reversal valve 4, check valve 9, first overflow valve 8, preformed valve 6 respectively by oil line pipe.Plug-in overflow valve, injection reversal valve 4, check valve 9, first overflow valve 8, preformed valve 6 is made to be communicated with the complete hydraulic circuit of formation one with injection cylinder 10 by oil line pipe, and oil line pipe is arranged in valve plate 7, reasonably make use of the space of valve plate 7, decrease the use of outside pipe arrangement, simplify assembly process, make the structure of whole hydraulic circuit compacter.
In this particular embodiment, preformed valve 6 comprises plug-in preformed valve 61, plug-in preformed valve 61 comprises and is wholely set at plug-in mounting preformed valve plug-in unit 611 and plug-in mounting preformed valve gap 612, plug-in mounting preformed valve plug-in unit 611 is positioned at valve block 7, plug-in mounting preformed valve gap 612 is positioned on valve block 7, plug-in preformed valve 61 is provided with the first preformed valve 62, first preformed valve 62 to be arranged on plug-in mounting preformed valve gap 612.First preformed valve 62 is arranged on plug-in mounting preformed valve gap 612, reasonably make use of the space of plug-in mounting preformed valve gap 612, makes the structure of hydraulic circuit compacter.
Concrete hydraulic circuit is: the injection port of injection reversal valve 4 is connected with the oil-in of the inserted valve plug-in unit 51 of the plug-in overflow valve controlled for back pressure, and the oil-out of inserted valve plug-in unit 51 is connected with the T mouth of injection reversal valve 4; The oil inlet and outlet of plug-in preformed valve 61 is connected with P, T hydraulic fluid port of injection reversal valve 4; The seam of hydraulic control one-way valve 9 is connected with the pit of the stomach in inserted valve plug-in unit 51, and the port of hydraulic control one-way valve 9 is connected with the P mouth of the first overflow valve 8, and the control mouth of hydraulic control one-way valve 9 is connected with the B mouth of the first preformed valve 62 by the Z2 mouth of plug-in mounting preformed valve gap 612; The A mouth of the first preformed valve 62 is connected with the P mouth of injection reversal valve 4 by the Z1 mouth of plug-in mounting preformed valve gap 612; The T mouth of the first overflow valve 8 and the equal oil return box of oil return inlet T of the first preformed valve 62.
Claims (5)
1. an injection molding machine preplasticizing back pressure control loop, comprise injection reversal valve, the overflow valve controlled for back pressure and preformed valve, described preformed valve is arranged in a valve block, it is characterized in that described overflow valve is plug-in overflow valve, described plug-in overflow valve is arranged on described valve block, described plug-in overflow valve comprises and is wholely set at inserted valve plug-in unit and plug-in mounting valve gap, described inserted valve plug-in unit is positioned at described valve block, described plug-in mounting valve gap is positioned on described valve block, described plug-in overflow valve is provided with the first overflow valve and check valve, the first described overflow valve is arranged on described inserted valve and covers.
2. a kind of injection molding machine preplasticizing back pressure control loop as claimed in claim 1, is characterized in that described check valve is arranged in described plug-in mounting valve gap.
3. a kind of injection molding machine preplasticizing back pressure control loop as claimed in claim 1, is characterized in that described check valve is hydraulic control one-way valve.
4. a kind of injection molding machine preplasticizing back pressure control loop as claimed in claim 1, characterized by further comprising injection cylinder, described injection cylinder is connected with described injection reversal valve, be provided with many oil line pipes in described valve block, described plug-in overflow valve is connected with described injection cylinder with described injection reversal valve, described check valve, the first described overflow valve, described preformed valve respectively by described oil line pipe.
5. a kind of injection molding machine preplasticizing back pressure control loop as claimed in claim 1, it is characterized in that described preformed valve comprises plug-in preformed valve, described plug-in preformed valve comprises and is wholely set at plug-in mounting preformed valve plug-in unit and plug-in mounting preformed valve gap, described plug-in mounting preformed valve plug-in unit is positioned at described valve block, described plug-in mounting preformed valve gap is positioned on described valve block, described plug-in preformed valve is provided with the first preformed valve, and the first described preformed valve is arranged on described plug-in mounting preformed valve gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520876809.0U CN205148834U (en) | 2015-11-05 | 2015-11-05 | Injection molding machine preformed back pressure control return circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520876809.0U CN205148834U (en) | 2015-11-05 | 2015-11-05 | Injection molding machine preformed back pressure control return circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205148834U true CN205148834U (en) | 2016-04-13 |
Family
ID=55684569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520876809.0U Expired - Fee Related CN205148834U (en) | 2015-11-05 | 2015-11-05 | Injection molding machine preformed back pressure control return circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205148834U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111559060A (en) * | 2020-05-20 | 2020-08-21 | 宁波华美达机械制造有限公司 | Zero back pressure injection oil piping system |
-
2015
- 2015-11-05 CN CN201520876809.0U patent/CN205148834U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111559060A (en) * | 2020-05-20 | 2020-08-21 | 宁波华美达机械制造有限公司 | Zero back pressure injection oil piping system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20191105 |