CN105736518A - Injection molding machine - Google Patents
Injection molding machine Download PDFInfo
- Publication number
- CN105736518A CN105736518A CN201610220104.2A CN201610220104A CN105736518A CN 105736518 A CN105736518 A CN 105736518A CN 201610220104 A CN201610220104 A CN 201610220104A CN 105736518 A CN105736518 A CN 105736518A
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- CN
- China
- Prior art keywords
- oil
- return pipe
- arm
- oil return
- injection machine
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/047—Preventing foaming, churning or cavitation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/82—Hydraulic or pneumatic circuits
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The invention belongs to the technical field of plastic production equipment, and discloses an injection molding machine. The injection molding machine comprises an injection molding machine body and an oil tank system. The oil tank system comprises a tank body, a connecting oil pump, a connecting oil way block, an oil outlet pipe and an oil return pipe, wherein the connecting oil pump and the connecting oil way block are arranged on the upper portion of the tank body and communicate with each other; the oil outlet pipe communicates with the connecting oil pump, and one end of the oil outlet pipe extends into the tank body; and one end of the oil return pipe extends into the tank body. An outlet of the oil return pipe is inserted into liquid in the tank body, and the cross section area of the outlet of the oil return pipe is greater than the cross section area of an inlet of the oil return pipe. The oil tank system is optimized, the jet flow speed of the oil return pipe is decreased, and bubbles caused by high liquid flow speed of the oil return pipe are eradicated. In the next place, turbulence to hydraulic oil in an oil tank is reduced due to the decreased jet flow speed, so that impurity deposition is better facilitated. Moreover, disturbance to impurities deposited at the bottom is reduced due to the decreased jet flow speed.
Description
Technical field
The invention belongs to plastic cement and produce equipment technical field, particularly relate to a kind of injection machine.
Background technology
Injection machine is the main production equipments of plastics, rubber, has the advantages such as low cost, small size, long-life, automaticity height, good reliability in view of hydraulic pressure, and most injection machines adopt hydraulic system.Impact and the reliability of hydraulic system are played vital effect by the quality of hydraulic oil.The bubble in the hydraulic oil quality important to oil.
Angle from economy and system work quality, the harm of system is sizable by the bubble in oil, mainly has the following aspects: system work is bad, oil temperature raises, accelerate the oxidation of oil, the greasy property of oil declines, accelerate the generation that sealing member is aging, cause cavitation erosion.Specifically, the generation of bubble includes following two mode:
(1) oil product is contacting with air in the processes such as production, accumulating, and air and hydraulic oil infiltrate fusion mutually.Facts have proved the air being dissolved in fluid, do not have anything directly to affect the physical property of oil.But dissolve a number of air and be in the fluid of saturation, flow through restriction or pump intake section, when the air that absolute pressure drops to fluid separates pressure, in oil, oversaturated air is just precipitated, and makes the micro air bubble being originally dissolved in oil be gathered into bigger bubble and occurs in systems；
(2) bubble formation blends in hydraulic oil mainly by oil return pipe, is the off working state of oil tank for injection molding machine system as shown in Figure 1, and below liquid level is inserted in the outlet 21 of the oil return pipe 2 within casing 1.Being duty as shown in Figure 2, the hydraulic oil of oil return pipe 2 ejection that outlet 21 is arranged in below liquid level is ejected into casing 1.Injection stream in oil return pipe 2 is not at the uniform velocity stable, sometimes jet velocity is high, injection stream oil return pipe 2 export periphery formed negative pressure, formed diagram liquid stream circulation, oil return pipe 2 periphery formed air column 6 can go directly oil return pipe outlet 21, under the effect of injection stream, form a large amount of bubble 8, and this bubble diameter is little, is not easily broken, cause hydraulic oil emulsifying, very harmful.Injection stream at a high speed has influence on the sedimentation of hydraulic oil impurity, can be kicked up by the deposition layer 7 of box house, again be mixed in oil.Especially, having in the injection machine of accumulator, this harm is more very.
According to fluid ultimate principle, it is clear that know that oil return pipe inserts the sufficiently large oil return pipe bubble of just stopping of liquid level depth below, but be limited by the restriction of injection machine structure, fuel tank height is typically not too high, and oil return pipe insertion liquid level depth below is therefore limited.If it is too big that oil return pipe inserts liquid level depth below, causing that impurity deposition effect is poor, and oil tank wall is had the harm of fretting fatigue by the injection stream being mingled with impurity, forms similar sandblasting effect, impurity increases.
Summary of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, provide a kind of injection machine, which reduce the injection Flow Velocity of oil return pipe, stopped the bubble because oil return pipe flow stream velocity causes soon, it is more conducive to impurity sedimentation, reduces the disturbance of bottom deposit impurity simultaneously.
A kind of injection machine of offer is provided, including injection machine main body and oil tank system, described oil tank system includes casing, be arranged on above described casing and be interconnected connect oil pump and connect oil path block and connect and one end extends into the flowline in described casing with the described oil pump that is connected, and one end extends into the oil return pipe in described casing, the outlet of described oil return pipe is inserted in the liquid of described casing and the cross-sectional area of the outlet of described oil return pipe is more than the cross-sectional area of the entrance of described oil return pipe.
Implement a kind of injection machine of the present invention, having the advantages that its cross-sectional area by the cross-sectional area of the outlet of oil return pipe being set greater than its entrance, reducing the injection Flow Velocity of oil return pipe, stopped the bubble because oil return pipe flow stream velocity causes soon；Secondly, the reduction of injection Flow Velocity reduces the turbulent flow of hydraulic oil in fuel tank, is more conducive to impurity sedimentation；Furthermore, the reduction of injection Flow Velocity reduces the disturbance of bottom deposit impurity.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in the embodiment of the present invention, the accompanying drawing used required in embodiment will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the off working state schematic diagram of existing oil tank system；
Fig. 2 is the working state schematic representation of existing oil tank system；
Fig. 3 is the oil tank system structural representation that first embodiment of the invention provides；
Fig. 4 is oil return pipe fluid flow inside schematic diagram in first embodiment of the invention；
Fig. 5 is the oil tank system structural representation that second embodiment of the invention provides；
Fig. 6 is the oil tank system structural representation that third embodiment of the invention provides.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
It should be noted that be referred to as " being fixed on " or " being arranged at " another element when element, it can directly on another element or be connected on this another element.When an element is known as " being connected to " another element, it can be directly to another element or be indirectly connected on this another element.
Also, it should be noted the orientation term such as left and right, upper and lower in the embodiment of the present invention, be only relative concept or with the normal operating condition of product for reference each other, and should not be regarded as have restrictive.
As shown in Figures 3 to 6, the injection machine that the embodiment of the present invention provides includes injection machine main body and oil tank system, and this oil tank system includes casing 1, oil return pipe 2, flowline 3, connects oil pump 4 and connect oil path block 5.Wherein, in one particular embodiment of the present invention, connect oil pump 4 and connect oil path block 5 and be arranged on the top of casing 1 and be interconnected, flowline 3 be connected oil pump 4 and connect and one end extends in casing 1, oil return pipe 2 be connected oil path block 5 and connect and one end extends in casing 1.Therefore, casing 1, oil return pipe 2, connection oil path block 5, connection oil pump 4, flowline 3 and casing 1 are sequentially communicated one loop of formation.In embodiments of the present invention, in the liquid of the outlet 21 insertion casing 1 of oil return pipe 2, and the cross-sectional area of the outlet 21 of oil return pipe 2 is more than the cross-sectional area of the entrance of oil return pipe 2.Wherein, the entrance of oil return pipe 2 refers to oil return pipe 2 and 5 ports of one end connected that are connected oil path block.In embodiments of the present invention, the liquid in casing 1 is hydraulic oil.
The embodiment of the present invention, by the cross-sectional area of the outlet 21 of oil return pipe 2 is set greater than the cross-sectional area of its entrance, reduces the injection Flow Velocity of oil return pipe 2, has stopped the bubble because oil return pipe 2 flow stream velocity causes soon；Secondly, the reduction of injection Flow Velocity reduces the turbulent flow of hydraulic oil in casing 1, is more conducive to impurity sedimentation；Furthermore, the reduction of injection Flow Velocity reduces the disturbance of casing 1 bottom deposit impurity.
Embodiment 1
As it is shown on figure 3, oil tank system includes casing 1, connects the flowline 3 of oil pump 4 and connect the oil return pipe 2 in oil path block 5 loop.Wherein, oil return pipe 2 is sudden expansion pipe, it specifically includes and is connected the first arm 22 that oil path block 5 connects and has above-mentioned entrance, and extending and have the second arm 23 of above-mentioned outlet 21 along the first arm 22 away from the direction connecting oil path block 5, above-mentioned second arm 23 inserts in the liquid of casing 1 and the cross-sectional area of the second arm 23 is more than the cross-sectional area of the first arm 22.In the present embodiment, the cross section of the first arm 22 and the second arm 23 is all rounded, oval or polygon, and oil return pipe 2 extends vertically in the hydraulic oil of casing 1 from top to bottom.Preferably, in the present embodiment, the first arm 22 and the second arm 23 are one-body molded.
In the present embodiment, flow of pressurized in first arm 22 is equal uniform flow, at the joining place of the first arm 22 and the second arm 23, equal uniform flow suffers that local failure causes the change of the size of flow velocity, direction or distribution, and thereby produce energy loss, form local losses, and then reduce the injection Flow Velocity of oil return pipe 2.As Fig. 4 illustrates oil return pipe 2 fluid flow inside situation.
Embodiment 2
As it is shown in figure 5, oil tank system includes casing 1, connects the flowline 3 of oil pump 4 and connect the oil return pipe 2 in oil path block 5 loop.Wherein, oil return pipe 2 is sudden expansion pipe, it specifically includes and is connected the first arm 22 that oil path block 5 connects and has above-mentioned entrance, and the second arm 23 and the 3rd arm 24 extended along the first arm 22 away from the direction connecting oil path block 5 successively, 3rd arm 24 has above-mentioned outlet 21, second arm 23 and the 3rd arm 24 insert in the liquid of casing 1, and the 3rd the cross-sectional area of arm 24 more than the cross-sectional area of the second arm 23, and the cross-sectional area of the second arm 23 is more than the cross-sectional area of the first arm 22.In the present embodiment, the cross section of first arm the 22, second arm 23 and the 3rd arm 24 is all rounded, oval or polygon, and oil return pipe 2 extends vertically in the hydraulic oil of casing 1 from top to bottom.Preferably, in the present embodiment, first arm the 22, second arm 23 and the 3rd arm 24 are one-body molded.
In the present embodiment, flow of pressurized in first arm 22 is equal uniform flow, at the joining place of the first arm 22 and the second arm 23, equal uniform flow suffers that local failure causes the change of the size of flow velocity, direction or distribution, and thereby produce energy loss, form local losses, and then reduce the injection Flow Velocity of oil return pipe 2；Suffer that local failure causes the change of the size of flow velocity, direction or distribution by the fluid of the second arm 23 at the joining place of the second arm 23 and the 3rd arm 24, and thereby produce energy loss, form local losses, further reduce the injection Flow Velocity of oil return pipe 2.It is understood that due to the limited height of casing 1, and if oil return pipe 2 to insert liquid level depth below too big, can cause that impurity deposition effect is poor, therefore oil return pipe 2 is not easily long.
Embodiment 3
As shown in Figure 6, oil tank system includes casing 1, connects the flowline 3 of oil pump 4 and connect the oil return pipe 2 in oil path block 5 loop.Wherein, oil return pipe 2 is increaser, namely in horn-like.Specifically, the cross-sectional area of oil return pipe 2 is gradually increased to outlet 21 by its porch.In the present embodiment, the circular in cross-section of oil return pipe 2, ellipse or polygon, and it from top to bottom extends vertically into casing 1, horn mouth stretches in hydraulic oil.
In the present embodiment, flow of pressurized in oil return pipe 2 can suffer that on its inwall being gradually increased local failure causes the change of the size of flow velocity, direction or distribution, and thereby produce energy loss, form local losses, and then reduce the injection Flow Velocity of oil return pipe 2.
In sum, implementing a kind of injection machine of the present invention, it, by the cross-sectional area of the outlet 21 of oil return pipe 2 is set greater than the cross-sectional area of its entrance, reduces the injection Flow Velocity of oil return pipe 2, has stopped the bubble because oil return pipe 2 flow stream velocity causes soon；Secondly, the reduction of injection Flow Velocity reduces the turbulent flow of hydraulic oil in casing 1, is more conducive to impurity sedimentation；Furthermore, the reduction of injection Flow Velocity reduces the disturbance of casing 1 bottom deposit impurity.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement or improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.
Claims (9)
1. an injection machine, it is characterized in that, including injection machine main body and oil tank system, described oil tank system includes casing, be arranged on above described casing and be interconnected connect oil pump and connect oil path block and connect and one end extends into the flowline in described casing with the described oil pump that is connected, and one end extends into the oil return pipe in described casing, the outlet of described oil return pipe is inserted in the liquid of described casing and the cross-sectional area of the outlet of described oil return pipe is more than the cross-sectional area of the entrance of described oil return pipe.
2. injection machine as claimed in claim 1, it is characterised in that described oil return pipe is sudden expansion pipe.
3. injection machine as claimed in claim 1, it is characterised in that described oil return pipe is increaser.
4. injection machine as claimed in claim 2, it is characterized in that, described oil return pipe includes the first arm being connected oil path block connection with described and having described entrance, and extending and have the second arm of described outlet along described first arm away from the direction of described connection oil path block, described second arm inserts in the liquid of described casing and the cross-sectional area of described second arm is more than the cross-sectional area of described first arm.
5. injection machine as claimed in claim 2, it is characterized in that, described oil return pipe includes the first arm being connected oil path block connection with described and having described entrance, and extend along described first arm away from the direction of described connection oil path block successively and the second arm of increasing successively of cross-sectional area and the 3rd arm, described second arm and the 3rd arm insert in the liquid of described casing and described 3rd arm and have described outlet.
6. injection machine as claimed in claim 4, it is characterised in that described first arm and the second arm are one-body molded.
7. injection machine as claimed in claim 5, it is characterised in that described first arm, the second arm and the 3rd arm are one-body molded.
8. the injection machine as described in any one of claim 1-7, it is characterised in that the circular in cross-section of described oil return pipe, ellipse or polygon.
9. the injection machine as described in any one of claim 1-7, it is characterised in that described oil return pipe extends vertically into described casing from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610220104.2A CN105736518A (en) | 2016-04-11 | 2016-04-11 | Injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610220104.2A CN105736518A (en) | 2016-04-11 | 2016-04-11 | Injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105736518A true CN105736518A (en) | 2016-07-06 |
Family
ID=56253027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610220104.2A Pending CN105736518A (en) | 2016-04-11 | 2016-04-11 | Injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105736518A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2744706A1 (en) * | 1977-10-05 | 1979-04-12 | Daimler Benz Ag | Hydraulic oil air separation system - has reservoir inlet diffusers widening and outlet jets narrowing in flow direction |
| US6116454A (en) * | 1998-10-01 | 2000-09-12 | Caterpillar Inc. | Hydraulic oil tank with integral baffle |
| JP2004011873A (en) * | 2002-06-11 | 2004-01-15 | Komatsu Ltd | Liquid tank |
| CN201026661Y (en) * | 2007-03-08 | 2008-02-27 | 东华机械有限公司 | Rapid highly effective plastic jetting-moulding machine structure for foaming and thin-wall plastics products |
| CN202483973U (en) * | 2012-03-22 | 2012-10-10 | 斗山工程机械（中国）有限公司 | Hydraulic oil tank and excavator with same |
| CN102762874A (en) * | 2010-02-03 | 2012-10-31 | 优铁工有限公司 | Oil tank |
| CN203525371U (en) * | 2013-10-14 | 2014-04-09 | 中国中轻国际工程有限公司 | Oil-water separator |
-
2016
- 2016-04-11 CN CN201610220104.2A patent/CN105736518A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2744706A1 (en) * | 1977-10-05 | 1979-04-12 | Daimler Benz Ag | Hydraulic oil air separation system - has reservoir inlet diffusers widening and outlet jets narrowing in flow direction |
| US6116454A (en) * | 1998-10-01 | 2000-09-12 | Caterpillar Inc. | Hydraulic oil tank with integral baffle |
| JP2004011873A (en) * | 2002-06-11 | 2004-01-15 | Komatsu Ltd | Liquid tank |
| CN201026661Y (en) * | 2007-03-08 | 2008-02-27 | 东华机械有限公司 | Rapid highly effective plastic jetting-moulding machine structure for foaming and thin-wall plastics products |
| CN102762874A (en) * | 2010-02-03 | 2012-10-31 | 优铁工有限公司 | Oil tank |
| CN202483973U (en) * | 2012-03-22 | 2012-10-10 | 斗山工程机械（中国）有限公司 | Hydraulic oil tank and excavator with same |
| CN203525371U (en) * | 2013-10-14 | 2014-04-09 | 中国中轻国际工程有限公司 | Oil-water separator |
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Application publication date: 20160706 |
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| RJ01 | Rejection of invention patent application after publication |