CN201143759Y - Positioning and locking oil cylinder hydraulic circuit of double-plate plastic jetting-moulding machine - Google Patents
Positioning and locking oil cylinder hydraulic circuit of double-plate plastic jetting-moulding machine Download PDFInfo
- Publication number
- CN201143759Y CN201143759Y CNU2007201382808U CN200720138280U CN201143759Y CN 201143759 Y CN201143759 Y CN 201143759Y CN U2007201382808 U CNU2007201382808 U CN U2007201382808U CN 200720138280 U CN200720138280 U CN 200720138280U CN 201143759 Y CN201143759 Y CN 201143759Y
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- valve
- inserted valve
- communicated
- port
- control end
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- Expired - Lifetime
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a hydraulic circuit for an adjusting and locking cylinder of a two-plate injection machine, belonging to the hydraulic circuit control equipment; and the hydraulic circuit comprises a hydraulic cylinder (9), cartridge inserted valves (1, 2, 3 and 4), piloted direction valves (5, 6, 7 and 8), an oil passage and a CPU. The input control terminals of the piloted direction valves (5, 6, 7 and 8) are connected with a signal oil passage XP1, and the output terminals are connected with the control terminals of the cartridge inserted valves (1, 2, 3 and 4), thus realizing the open and close control of the cartridge inserted valves (1, 2, 3 and 4) and realizing the oil pressure control of a front cavity and a back cavity of the hydraulic cylinder (9). The hydraulic circuit is used for adjusting and locking mold control of the two-plate injection machine.
Description
Technical field:
The present invention relates to a kind of oil circuit control loop of hydraulic jack, particularly a kind of positioning locking cylinder hydraulic circuit of two board injection machines
Background technology
At present, the kind of injection machine is substantially based on the crank connecting rod formula, and two board injection machines are few; But with regard to whole superior function, two board injection machines are more and more favored by people, will represent the developing direction of injection machine, adopt two board injection machine templates of cascade mould-regulating mould-locking hydraulic cylinder stressed evenly, be out of shape for a short time, clamp force can arbitrarily be controlled, and die life is prolonged.The maintenance of equipment difficulty reduces, and long service life, can conveniently implement secondary locked mode back-pressure forming process, improves the quality of products greatly.Oil pressure when the hydraulic circuit of the hydraulic jack of injection machine of the prior art can not be realized transferring film lock film is controlled, thereby makes the unstable product quality of injection machine extrusion, has increased the material cost of equipment simultaneously.
Summary of the invention
The positioning locking cylinder hydraulic circuit of two board injection machines provided by the invention, the technical problem of the oil pressure control when having overcome hydraulic circuit of the prior art and can not realize transferring film lock film makes double-plate injection moulding machine realize the function of locked mode, mode transfer,
The present invention solves above technical problem by the following technical programs:
The positioning locking cylinder hydraulic circuit of two board injection machines, comprise that hydraulic jack 9, inserted valve 1,2,3,4, guide control direction valve 5,6,7,8, oil circuit and CPU, the input control end that described guide controls direction valve 5 is connected on the signal oil circuit XP1, the control end of its output and inserted valve 1 links together, realization is to the opening and closing control of inserted valve 1, a valve port of inserted valve 1 is communicated with oil return circuit T, and another valve port is communicated with the back cavity of hydraulic jack 9 by hydraulic fluid port A; The input control end that the guide controls direction valve 6 is connected on the signal oil circuit XP1, the control end of its output and inserted valve 2 links together, realization is to the opening and closing control of inserted valve 2, a valve port of inserted valve 2 is communicated with high-pressure oil passage P, and another valve port is communicated with the back cavity of hydraulic jack 9 by hydraulic fluid port A; The input control end that the guide controls direction valve 7 is connected on the signal oil circuit XP1, the control end of its output and inserted valve 3 links together, realization is to the opening and closing control of inserted valve 3, a valve port of inserted valve 3 is communicated with high-pressure oil passage P, and another valve port is communicated with the ante-chamber of hydraulic jack 9 by hydraulic fluid port B; The input control end that the guide controls direction valve 8 is connected on the signal oil circuit XP1, and the control end of its output and inserted valve 4 links together, and realizes the opening and closing control to inserted valve 4; A valve port of inserted valve 4 is communicated with oil return circuit T, and another valve port is communicated with the back cavity of hydraulic jack 9 by hydraulic fluid port B.
Described guide controls direction valve 5,6,7,8 and is electrically connected with CPU, and the programme-control among the CPU they get electric and dead electricity.
The present invention has realized the purpose that the oil pressure of the positioning locking cylinder hydraulic circuit of two board injection machines is controlled according to the requirement of injection machine mould-regulating mould-locking, and it is few to have reached element, and control is simple, and cost is low, the purpose that performance is good.
Description of drawings
Fig. 1 is a structural representation of the present invention
The specific embodiment
The specific embodiment of the present invention is as follows:
It is by inserted valve 1, the guide controls direction valve 5, inserted valve 2, and the guide controls direction valve 6, control mode transfer big (little) and die sinking action, simultaneously, inserted valve 1 is closed, and inserted valve 2 is opened, inserted valve 3 is closed, inserted valve 4 is opened, and piston rod (pull bar) is realized mode transfer big (little) and die sinking action fast forward.At this moment D29, D30 simultaneously electric, inserted valve 1 is closed, inserted valve 2 is opened, the oil-feed of A point, the oil return of B point is moved more than realizing.When realizing the action of locked mode and mode transfer little (greatly), electromagnet D31, the D32 of pilot-actuated valve 7,8 gets electric, and inserted valve 3 is opened, inserted valve 4 is closed, the oil-feed of B point, the oil return of A point, inserted valve 1 is opened, and pull bar (piston rod) moves backward, has realized the action request of locked mode and mode transfer little (greatly).Mode-locking oil cylinder commutation direction valve adopts the plug-in mounting system, and four plug-in mounting switch mouths are controlled separately by four pilot valves respectively, can conveniently realize multiple logic function.Make logic function reliable, key is that the sealing of four plug-in mounting poppet valve cores is reliable, and plug-in mounting poppet valve core and plug-in mounting body can effectively address this problem after grinding.Each magnetic valve all must not when electricity, and inserted valve 1,4 is opened, and inserted valve 2,3 is closed.The ante-chamber of oil cylinder and back cavity oil-feed, when lumen was fuel-displaced: D31, D32 got electric, and inserted valve 1,3 is opened, and inserted valve 2,4 is closed, the oil-feed of B mouth, the oil return of A mouth.When requiring pressure maintenance or piston rod requirement location in the oil cylinder: D29, D32 get electric, inserted valve 1,2,3,4 contract fullys, A mouth, the sealing of B mouth.The ante-chamber and the back cavity of oil cylinder are fuel-displaced, and during the lumen oil-feed: D29, D30 get electric, and inserted valve 2,4 is opened, and inserted valve 1,3 is closed, A oil-feed, B oil return.(piston rod floats) each magnetic valve all must not be electric during mode transfer, and inserted valve 1,4 is opened, and inserted valve 2,3 is closed, and P shuts, and A, B and T are logical.
This loop has following three big characteristics:
1. oil cylinder two oil-ins are shut, and two oil return openings are opened, and piston is in quick condition, and are fast Move the oil cylinder pushing template and move to the chucking orientation, can rapidly, accurately, conveniently set up chucking The position.
2. oil cylinder two oil-ins and two oil return openings are shut entirely, and piston rod is in stationary state, live Stopper rod location status retentivity is good, i.e. the repetitive positioning accuracy height.
3. system sealing is good, and after oil cylinder two oil-ins and two oil return openings were shut entirely, pressure was protected Holding property is good, and oil pocket pressure can arbitrarily be set, and the impact that not changed by system pressure.
Claims (2)
1, a kind of positioning locking cylinder hydraulic circuit of two board injection machines, comprise that hydraulic jack (9), inserted valve (1,2,3,4), guide control direction valve (5,6,7,8), oil circuit and CPU, it is characterized in that, the input control end that described guide controls direction valve (5) is connected on the signal oil circuit XP1, the control end of its output and inserted valve (1) links together, realization is to the opening and closing control of inserted valve (1), a valve port of inserted valve (1) is communicated with oil return circuit T, and another valve port is communicated with the back cavity of hydraulic jack (9) by hydraulic fluid port A; The input control end that the guide controls direction valve (6) is connected on the signal oil circuit XP1, the control end of its output and inserted valve (2) links together, realization is to the opening and closing control of inserted valve (2), a valve port of inserted valve (2) is communicated with high-pressure oil passage P, and another valve port is communicated with the back cavity of hydraulic jack (9) by hydraulic fluid port A; The input control end that the guide controls direction valve (7) is connected on the signal oil circuit XP1, the control end of its output and inserted valve (3) links together, realization is to the opening and closing control of inserted valve (3), a valve port of inserted valve (3) is communicated with high-pressure oil passage P, and another valve port is communicated with the ante-chamber of hydraulic jack (9) by hydraulic fluid port B; The input control end that the guide controls direction valve (8) is connected on the signal oil circuit XP1, and the control end of its output and inserted valve (4) links together, and realizes the opening and closing control to inserted valve (4); A valve port of inserted valve (4) is communicated with oil return circuit T, and another valve port is communicated with the back cavity of hydraulic jack (9) by hydraulic fluid port B.
2, the positioning locking cylinder hydraulic circuit of a kind of two board injection machines according to claim 1 is characterized in that, described guide controls direction valve (5,6,7,8) and is electrically connected with CPU, and the programme-control among the CPU they get electric and dead electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201382808U CN201143759Y (en) | 2007-12-14 | 2007-12-14 | Positioning and locking oil cylinder hydraulic circuit of double-plate plastic jetting-moulding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201382808U CN201143759Y (en) | 2007-12-14 | 2007-12-14 | Positioning and locking oil cylinder hydraulic circuit of double-plate plastic jetting-moulding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201143759Y true CN201143759Y (en) | 2008-11-05 |
Family
ID=40080626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201382808U Expired - Lifetime CN201143759Y (en) | 2007-12-14 | 2007-12-14 | Positioning and locking oil cylinder hydraulic circuit of double-plate plastic jetting-moulding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201143759Y (en) |
-
2007
- 2007-12-14 CN CNU2007201382808U patent/CN201143759Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20071214 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |