CN203635895U - Injection system of die-casting machine - Google Patents

Injection system of die-casting machine Download PDF

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Publication number
CN203635895U
CN203635895U CN201320876467.3U CN201320876467U CN203635895U CN 203635895 U CN203635895 U CN 203635895U CN 201320876467 U CN201320876467 U CN 201320876467U CN 203635895 U CN203635895 U CN 203635895U
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CN
China
Prior art keywords
pressure
casting machine
oil circuit
pressure oil
die casting
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Application number
CN201320876467.3U
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Chinese (zh)
Inventor
杨大鹏
耿向宇
蔡骏
吴骏
E·霍尔格
陈永伯
王伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bosch Rexroth Changzhou Co Ltd
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Bosch Rexroth Changzhou Co Ltd
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Priority to CN201320876467.3U priority Critical patent/CN203635895U/en
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Abstract

The utility model discloses an injection system of a die-casting machine. The injection system of the die-casting machine comprises a system pressure device and a pressure oil cylinder, wherein a piston rod is arranged in the pressure oil cylinder, a rodless cavity and a rod cavity are formed in the pressure oil cylinder, a first pressure oil circuit and a second pressure oil circuit are arranged in the rodless cavity in a communicated mode, pressure of the first pressure oil circuit and pressure of the second pressure oil circuit are provided by the system pressure device, and an active cartridge valve is arranged in the first pressure oil circuit. According to the arrangement, the injection system of the die-casting machine is simple in structure and convenient to install and repair.

Description

A kind of die casting machine injection system
Technical field
The utility model relates to a kind of die casting machine injection system, especially relates to a kind of simple in structure, installation and die casting machine injection system easy to maintenance.
Background technology
In mechanical manufacturing field, die casting is a kind of common machine-building form.In use, by the metal of liquefaction, the metal such as aluminium, the zinc etc. that are generally low melting point inject in liquid metal vessels.The hydraulic jack of peripheral hardware is under the effect of flow, and after in liquid metal press-in die, and pressurized hydraulic oil cylinder makes the metal cooling forming in mould, completes die casting manufacture process.
Refer to shown in Fig. 1, die casting machine injection system 1 comprises system pressure device 11, system pressure device 11 can act on the first pressure oil circuit 12, on the first pressure oil circuit 12, be provided with the open/closure that reversal valve 13, one magnetic valves (not label) and described reversal valve 13 are connected to control the first pressure oil circuit 12.In oil pressure cylinder 15, be provided with piston rod 151, oil pressure cylinder inner chamber is divided into rod chamber 152 and rodless cavity 153 by it.Described the first pressure oil circuit 12 is communicated with the rodless cavity 153 of oil pressure cylinder 15, thereby the pressure oil of quick propelling piston bar 151 is provided.On described rodless cavity 153, be also communicated with the second pressure oil circuit 16, described the second pressure oil circuit 16 provides the pressure oil that is greater than the pressure in the first pressure oil circuit 12 by the accumulator 18 of the second pressure oil circuit.Thereby, make piston rod 151 keep motionless after liquid metal injection is entered to mould, liquid metal is solidified.But, because the pressure in the second pressure oil circuit 16 is greater than the pressure in the first pressure oil circuit 12, and the speed that traditional reversal valve 13 cuts out is slower, pressure oil is back to the first oil circuit 12 when preventing that the second pressure oil circuit 16 is communicated with, in oil pressure cylinder 15, be provided with check valve 17, enter the first oil circuit 12 to stop hydraulic oil to reflux.
In traditional mode of operation, check valve 17 and reversal valve 13 are separately manufactured and are installed, and installation and manufacturing cost are higher.In addition, be arranged at oil pressure cylinder 15 internal check valves 17 and easily damage, in the time of maintain and replace, after oil cylinder need to being disassembled, keep in repair again, work is complicated, and after being dismounted for multiple times, the overall precision of product can reduce.
Utility model content
In order to make up the deficiencies in the prior art, that the utility model provides is simple in structure, installation and die casting machine injection system easy to maintenance.
In order to complete the object of upper utility model, a kind of die casting machine injection system is provided, comprise system pressure device and oil pressure cylinder, in described oil pressure cylinder, be provided with piston rod and in oil pressure cylinder, form rodless cavity and rod chamber, in described rodless cavity, be communicated with the first pressure oil circuit and the second pressure oil circuit that pressure is provided by described system pressure device, in described the first pressure oil circuit, be provided with active inserted valve.
The utility model also has following characteristics, and described active inserted valve is arranged on the oil circuit board of described die casting machine injection system.
The utility model also has following characteristics, and described die casting machine injection system also has controls the magnetic valve that described active inserted valve is opened.
The utility model also has following characteristics, and the pressure in described the first pressure oil circuit is less than the pressure in the second pressure oil circuit.
The utility model also has following characteristics, and described die casting machine injection system also has energy storage equipment, in order to the pressure in the second pressure oil circuit to be provided.
The utility model also has following characteristics, and described die casting machine injection system also has the controller of controlling the first pressure oil circuit and the second pressure oil circuit work.
The utility model also has following characteristics, has the 3rd pressure oil circuit that institute's piston rod is retracted is provided in the rod chamber of described oil pressure cylinder.
The utility model also has following characteristics, on described the first pressure oil circuit, has the return line that pressure oil is transmitted back to fuel tank.
The utility model also has following characteristics, and described return line is arranged between described active inserted valve and described rodless cavity.
Therefore, use die casting machine injection system of the present utility model, it is simple in structure, installation and easy to maintenance.
Accompanying drawing explanation
Accompanying drawing below detailed description described later combination can comprehend aforementioned and other side of the present utility model.In the accompanying drawings:
Fig. 1 is the structural principle schematic diagram of die casting machine injection system of the prior art;
Fig. 2 is the hydraulic principle schematic diagram of die casting machine injection system of the present utility model, only shows in the drawings the part-structure relevant to the utility model;
Fig. 3 is the structural principle schematic diagram of die casting machine injection system of the present utility model; Only show in the drawings the part-structure relevant to the utility model;
Pressure and rate curve when Fig. 4 is die casting machine injection system work of the present utility model.
The specific embodiment
Exemplary embodiment of the present utility model is described with reference to the accompanying drawings.It should be noted that, in each accompanying drawing, identical Reference numeral represents function and/or identical element or the parts of structure.
Refer to shown in Fig. 2 and Fig. 3, die casting machine injection system 200 of the present utility model comprises system pressure device 20, and system pressure device 20 is by can be to the first pressure oil circuit 30 discharge pressure oil, and described the first pressure oil circuit 30 is connected with oil pressure cylinder 40.Die casting machine injection system 200 also has energy storage equipment 21 can provide pressure oil to the second pressure oil circuit 50.Pressure in described the second pressure oil circuit 50 is greater than the pressure in the first pressure oil circuit 30.On the first pressure oil circuit 30, be provided with active inserted valve 31, described active inserted valve 31 is arranged in the oil circuit board (not shown) of die casting machine injection system 200, certainly in other embodiments, active inserted valve 31 also can be arranged at similar position, as long as it is convenient to install and change.In addition, on the first pressure oil circuit 30, be provided with magnetic valve (not label) simultaneously control the open-minded of active inserted valve 31.
In described oil pressure cylinder 40, be provided with piston rod 41, the inner chamber of oil pressure cylinder 40 is separated into rod chamber 42 and rodless cavity 43 by described piston rod 41, rod chamber 42 and not UNICOM of rodless cavity 43.Aforesaid the first pressure oil circuit 30 and the second pressure oil circuit 50 are all connected with rodless cavity 43, can be to the corresponding pressure oil of the interior injection of rodless cavity 43.
In the rod chamber 42 of oil pressure cylinder 40, be connected with the 3rd pressure oil circuit (not shown), the 3rd pressure oil circuit also can provide pressure oil by other pressure source, and piston rod 41 is return.
Shown in Fig. 4, in figure, show die casting machine injection system 200 pressure in oil pressure cylinder 20 and the variation of speed at work, comprise pressure curve P and rate curve V., describe the course of work of die casting machine injection system 200 in conjunction with Fig. 2 and Fig. 3 below, the job control of die casting machine injection system 200 is undertaken by controller (not shown), and controller belongs to prior art, does not repeat them here.
System pressure device 20 is pressed into pressure oil by the first pressure oil circuit 30 the active inserted valve 31 being arranged on the first pressure oil circuit 30, in the utility model, open active inserted valve 31 by magnetic valve, after active inserted valve 31 is opened, pressure oil enters the rodless cavity 43 of oil pressure cylinder 40.Under the effect of pressure oil, piston rod 41, with V curve in as shown in Figure 4, acts on the T1 time altogether, the first stage that die casting machine injection system 200 is worked, that is to say that injection stage completes.In this stage, liquid metal injection moulding mould.Simultaneously, the second pressure oil circuit 50 injects the pressure oil of the second pressure aforementioned rodless cavity 43 under the effect of energy storage equipment, the pressure that now the first pressure oil circuit 30 produces is less than the second pressure oil circuit 50 and spring applied force, under this acting in conjunction, active inserted valve 31 is closed rapidly, so the pressure oil in the second pressure oil circuit 50 can not reflux from the first pressure oil circuit 30.The second pressure oil acts on piston rod 41, makes piston rod 41 keep the T2 time motionless, and the second stage that die casting machine injection system 200 is worked, that is to say that packing stage completes.In this stage, metal is cooling forming in mould.After second stage completes, the first pressure oil circuit 30 and the second pressure oil circuit 50 are all opened.And pressurize from the 3rd pressure oil circuit of the rod chamber 42 that is connected in oil pressure cylinder 40, thereby piston rod 41 is return rapidly, be ready to complete next workflow.In addition, in the present embodiment, on the rod chamber 42 of oil pressure cylinder 40, there is oil returning tube 60, between rodless cavity 43 and described active inserted valve 31, be further connected with oil returning tube 70, for the oil after release being back to fuel tank (not label).
Owing to only there being an active inserted valve of parts, and it is arranged on the oil circuit board of die casting machine injection system, and it is simple in structure, easy for installation.And active inserted valve is installed on oil circuit board, even if product has damage, also can convenient for maintaining and replacing.
Although describe specific implementations of the present utility model here in detail, the object that they are only used to explain provides, and should not think that they are construed as limiting scope of the present utility model.Do not departing under the prerequisite of the utility model spirit and scope, various replacements, change and transformation can be conceived out.

Claims (9)

1. a die casting machine injection system, it is characterized in that: comprise system pressure device and oil pressure cylinder, in described oil pressure cylinder, be provided with piston rod, in described oil pressure cylinder, be partitioned into not rodless cavity and the rod chamber of UNICOM by above-mentioned piston rod, in described rodless cavity, be communicated with respectively the first pressure oil circuit and the second pressure oil circuit that pressure is provided by described system pressure device, in described the first pressure oil circuit, be provided with active inserted valve.
2. die casting machine injection system as claimed in claim 1, is characterized in that, described active inserted valve is arranged on the oil circuit board of described die casting machine injection system.
3. die casting machine injection system as claimed in claim 2, is characterized in that, described die casting machine injection system also has controls the magnetic valve that described active inserted valve is opened.
4. die casting machine injection system as claimed in claim 3, is characterized in that, the pressure in described the first pressure oil circuit is less than the pressure in the second pressure oil circuit.
5. die casting machine injection system as claimed in claim 4, is characterized in that, described die casting machine injection system also has energy storage equipment, in order to the pressure in the second pressure oil circuit to be provided.
6. die casting machine injection system as claimed in claim 5, is characterized in that, described die casting machine injection system also has the controller of controlling the first pressure oil circuit and the second pressure oil circuit work.
7. die casting machine injection system as claimed in claim 6, is characterized in that, has the 3rd pressure oil circuit that institute's piston rod is retracted is provided in the rod chamber of described oil pressure cylinder.
8. die casting machine injection system as claimed in claim 7, is characterized in that, on described the first pressure oil circuit, has the return line that pressure oil is transmitted back to fuel tank.
9. die casting machine injection system as claimed in claim 8, is characterized in that, described return line is arranged between described active inserted valve and described rodless cavity.
CN201320876467.3U 2013-12-27 2013-12-27 Injection system of die-casting machine Active CN203635895U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320876467.3U CN203635895U (en) 2013-12-27 2013-12-27 Injection system of die-casting machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320876467.3U CN203635895U (en) 2013-12-27 2013-12-27 Injection system of die-casting machine

Publications (1)

Publication Number Publication Date
CN203635895U true CN203635895U (en) 2014-06-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320876467.3U Active CN203635895U (en) 2013-12-27 2013-12-27 Injection system of die-casting machine

Country Status (1)

Country Link
CN (1) CN203635895U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109982789A (en) * 2016-11-24 2019-07-05 罗伯特·博世有限公司 Hydraulic casting unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109982789A (en) * 2016-11-24 2019-07-05 罗伯特·博世有限公司 Hydraulic casting unit
CN109982789B (en) * 2016-11-24 2021-11-02 罗伯特·博世有限公司 Hydraulic casting unit

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