CN109707481A - A kind of oil sump and its manufacturing method - Google Patents
A kind of oil sump and its manufacturing method Download PDFInfo
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- CN109707481A CN109707481A CN201811647793.0A CN201811647793A CN109707481A CN 109707481 A CN109707481 A CN 109707481A CN 201811647793 A CN201811647793 A CN 201811647793A CN 109707481 A CN109707481 A CN 109707481A
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- oil sump
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Abstract
The present invention relates to Diesel Engine Technique Field more particularly to a kind of oil sump and its manufacturing methods.Oil sump includes the second oil sump layer obtained after the first oil sump layer and foamed processing, and the first oil sump layer is located above the second oil sump layer.Oil sump manufacturing method includes the following steps: to obtain the first sheet material and the second sheet material；First sheet material and the second sheet material upper and lower mould swaging are at molding sheet material；Molding sheet material, which is put into mold, carries out compression molding acquisition oil sump base；Carrying out foaming to the second sheet material on the outside of oil sump base is oil pan body.Molding sheet material compression molding is after oil sump base, it is again oil pan body to oil sump base foaming, oil pan body outer layer forms multiple tiny holes, since the first sheet material does not foam, the oil sump obtained by the manufacturing method can be in the case where guaranteeing not reveal, it can guarantee that itself vibration noise of finished product oil sump reduces, the noise of the components such as crankshaft can be adsorbed.
Description
Technical field
The present invention relates to technical field of engines more particularly to a kind of oil sump and its manufacturing methods.
Background technique
Engine during operation, because fuel combustion, power output system operating, air flowing etc. reasons can generate sound
Strong very big sound.Currently, there are two types of methods for engine noise reduction.One is by increasing the components such as support plate, support bent plate
Structure noise reduction is carried out, but this kind of noise-reduction method leads to the processing technology complexity of oil sump and noise reduction effect is limited, and newly-increased machine
Structure itself vibration can also generate additional noise；And another is then to be formed at the beginning of manufacture by modes such as punching press, injection moldings
Some special denoising structures, and punching press or injection structure, are the purpose that enhancing structure is needed based on thin wall component mostly, are carried out
The design of reinforcement structure, combines noise reduction.Noise reduction is not the priority function of this class formation, and it is poor to directly result in noise reduction effect.On
Two kinds of technologies are stated to design mainly for the noise for weakening oil sump manufacturing method itself vibration, it cannot to the rotational noise of crankshaft
Carry out any effective processing.
It is, therefore, desirable to provide a kind of oil sump and its manufacturing method, are able to solve existing oil sump manufacturing method noise reduction effect
The problem of fruit is poor and noise cannot be adsorbed by itself.
Summary of the invention
It is an object of the invention to propose a kind of oil sump and its manufacturing method, vibration noise can reduce and to crankshaft etc.
The noise of components is adsorbed.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of oil sump is provided, it is described including the second oil sump layer obtained after the first oil sump layer and foamed processing
First oil sump layer is located above the second oil sump layer.
Preferably, the first oil sump layer and the second oil sump layer are ultra-high molecular weight polyethylene layer.
The present invention also provides a kind of oil sump manufacturing methods, to manufacture such as claim and the oil sump, packet
Include following steps:
Obtain the first sheet material and the second sheet material；
First sheet material and the second sheet material upper and lower mould swaging are at molding sheet material；
Molding sheet material, which is put into mold, carries out compression molding acquisition oil sump base；
Foaming is carried out to the second sheet material of oil sump base outer layer, the oil sump base is made to form oil pan body.
Preferably, first sheet material is by ultrahigh molecular weight polyethylene at second sheet material is by super high molecular weight
Polyethylene and foaming agent are made.
Preferably, further comprising the steps of:
Oil pan body is cooling, simultaneously punching obtains oil sump for finishing.
Preferably, the first sheet material of upper mould cooling by water, lower die heats second sheet material and carries out in foaming process
Foaming.
Preferably, first sheet thickness is less than second sheet thickness.
Preferably, first sheet thickness is 0.5mm-2mm.
Preferably, second sheet thickness is 1mm-3mm.
Preferably, the foaming is microwave foaming or infrared foaming.
The present invention also provides a kind of oil sumps, are fabricated using oil sump manufacturing method described above, including the
The the second oil sump layer obtained after one oil sump layer and foamed processing.
The invention has the advantages that:
Oil sump provided in the present invention, the foaming processing of the second oil sump layer obtain, and the second oil sump layer after foaming produces
Raw hole multiple tiny and unevenly distributed, sound wave, which enters in above-mentioned hole, to be absorbed, to realize the purpose of noise reduction.
Oil sump manufacturing method provided in the present invention, molding machine form two kinds of sheet materials, and two kinds of sheet material moldings are compounded to form
Molding sheet material, molding sheet material compression molding be oil sump base after, then to oil sump base carry out foaming be oil pan body, oil
This volume surrounding of bottom case is formed with multiple tiny holes, irregular hole in similar sponge, since the first sheet material does not foam,
The oil sump obtained by the manufacturing method can guarantee that finished product oil sump itself vibrates in the case where guaranteeing oil-proof
Noise reduces, additionally it is possible to adsorb to the noise of the components such as crankshaft, reduce engine noise.
Detailed description of the invention
Fig. 1 is the flow chart of oil sump manufacturing method provided in an embodiment of the present invention；
Fig. 2 is oil sump mould pressing process schematic diagram provided in an embodiment of the present invention；
Fig. 3 is oil sump foam process schematic diagram provided in an embodiment of the present invention；
Fig. 4 is oil pan structure schematic diagram provided in an embodiment of the present invention；
Fig. 5 is oil sump wall microstructure schematic diagram provided in an embodiment of the present invention.
In figure:
1, molding sheet material；2, oil sump base；3, oil sump；31, the first oil sump layer；32, the second oil sump layer；4, on
Mould；5, lower die；6, heating tube.
Specific embodiment
To keep the technical problems solved, the adopted technical scheme and the technical effect achieved by the invention clearer, below
In conjunction with attached drawing and pass through specific embodiment to further illustrate the technical scheme of the present invention.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing and it is not all.
A kind of oil sump manufacturing method is provided in the present embodiment, this method can make the oil sump own absorption obtained make an uproar
Sound plays the purpose for reducing noise.
Specifically, as shown in Figure 1, the manufacturing method specifically comprises the following steps:
S1, the first sheet material and the second sheet material are obtained；；
S2, the first sheet material and the second sheet material upper and lower mould swaging are at molding sheet material 1；
S3, molding sheet material 1, which are put into mold, carries out compression molding acquisition oil sump base 2；
S4, foaming is carried out to the second sheet material of 2 outer layer of oil sump base, the oil sump base is made to form oil pan body；
S5, oil pan body are cooling, simultaneously punching obtains oil sump 3 for finishing.
First sheet material is by ultrahigh molecular weight polyethylene at the second sheet material is by ultra-high molecular weight polyethylene and foaming agent system
At.First sheet material and the second sheet material enter molding machine by identical masterbatch and are formed, but the molding material mouth of the two is different, and second
Foaming agent is mixed in the masterbatch of sheet forming.In the fabrication process, by masterbatch and be mixed with the masterbatch of foaming agent respectively from
The different material mouths of type machine form the first sheet material and the second sheet material.It can prevent masterbatch from sharing one with the masterbatch for being mixed with foaming agent
Material mouth cause unmixed foaming agent masterbatch adulterate enter a small amount of foaming agent, in subsequent foaming process the first sheet material also with
Second sheet material foams together, causes 3 internal layer of oil sump obtained to form hole, the problem of oil sump oil leak occurs.Certainly at it
The masterbatch that the first sheet material and the second sheet material use in his embodiment can be different, but the masterbatch of the second sheet material must be energy
The material enough to foam.
Since the first sheet material and the second sheet material are formed, rear surface temperature is higher, and the two surface shows the device of melting,
Can not need any processing after molding can be realized the compound of the two.In order to save time and the heating energy of compound needs
Consumption, the material mouth of molding machine is in setting up and down, and feed opening goes out the second sheet material, and feeding port goes out the first sheet material, this kind of set-up mode can
Guarantee that combination process can be realized after the first sheet material and the second sheet material are formed.First sheet material and the second sheet material are molded complex up and down
At molding sheet material, it can guarantee the intensity for obtaining oil sump 3.
Molding sheet material 1, which is put into mold, carries out compression molding acquisition oil sump base 2, since foamed material is mostly plastics, with punching
Compression mould produces plastic oil pan, and for components manufacturing enterprise, technology upgrading difficulty is low, and transition is rapid.
Above-mentioned masterbatch is preferably ultra-high molecular weight polyethylene (Ultra-High Molecular Weight
Polyethylene, abbreviation UHMWPE), ultra-high molecular weight polyethylene refers to linear poly- second of the viscosity average molecular weigh 1,500,000 or more
Alkene is a kind of polyethylene kind engineering plastics the most special.With excellent much higher than common PE and other conventional project plastics
Anisotropic energy such as the wearability of superelevation, impact resistance, incompressible, stress crack resistant, low temperature resistant (subzero 269 DEG C still can be used), is changed
It is good (corrosion of strong alkali-acid resistance) to learn stability.
Foaming in the present embodiment to the second sheet material for being mixed with foaming agent is specifically to foam for high temperature, certainly in other implementations
It can also be microwave foaming or infrared foaming in example.In order to guarantee that the second sheet material after foaming absorbs more noise,
First sheet thickness should be less than the second sheet thickness.Above-mentioned first sheet thickness range is 0.5mm-2mm in the present embodiment, preferably
For 1mm, and the second sheet thickness range is 1mm-3mm, preferably 2mm.This kind of set-up mode guarantees the oil sump finished product obtained
It can reduce noise and will not oil leak；And guarantee oil sump 3 in the not increased situation of thickness, maximum absorption of noise.
First sheet material is fine and close UHMWPE layer, can guarantee the consistency of oil sump 3, prevent oil leak.Second sheet material is
Porous UHMWPE layer, has multiple holes in the UHMWPE layer after foaming, and to constitute the plastics after foaming porous in multiple hole
Material causes air vibration in hole when sound wave enters material internal along these pores, results from the friction of hole wall, causes hole
The difference of interior air movement speed enables a part of sound to be converted into thermal dissipation, to make because of friction and the effect of viscous force
Sound wave is weak, reflected sound decrease achievees the purpose that sound absorption.
By carrying out foaming processing to 2 outer layer of oil sump base (i.e. the second sheet material), it can guarantee that finished product oil sump itself shakes
Moving noise reduces, and can adsorb to the noise of the components such as crankshaft.
By being foamed in this present embodiment as foamable, the first sheet material is influenced by heat its property in order to prevent in foaming process
Can, 4 the first sheet material of cooling by water of upper mold of stamping die in foaming process, lower die 5 heats the second sheet material and foams.I.e. originally
Punching press and foaming are realized in same mold in embodiment, can save the time of transfer oil sump base 2, realize that process is continuously made
The purpose of industry.
Fig. 2 is oil sump mould pressing process schematic diagram, as shown in Fig. 2, the molding sheet material 1 of composite molding is in upper mold 4 and lower die 5
Cooperation under can be pressed into oil sump base 2, the molding of oil sump base 2 as shown in figure 3, be provided with cavity in upper mold 4 in Fig. 3,
The cavity is able to enter cooling water；And it is that lower die 5 is heated that more heating tubes 6 are provided in lower die 5, upper mold 4 and lower die 5
Structure, realize that upper mold 4 is cooling, prevents the first sheet material temperature distortion while can be realized 5 foamable of lower die.
Oil pan body is cooling, simultaneously punching acquisition oil sump 3 is realized particular by machining for finishing, can specifically pass through
The processes such as vehicle, brill are realized, to obtain oil sump 3.
A kind of oil sump is additionally provided in the present embodiment, as shown in figure 4, the oil sump makes 3 with providing in the present embodiment
Oil sump manufacturing method is fabricated, as shown in figure 5, Fig. 5 is oil sump wall microstructure schematic diagram.The oil sump 3 includes the
The the second oil sump layer 32 obtained after one oil sump layer 31 and foamed processing., the first oil sump layer 31 is located at the second oil sump
The top of layer 32, wherein the first oil sump layer 31 and the second oil sump layer 32 by ultrahigh molecular weight polyethylene at, therefore, two
Person is ultra-high molecular weight polyethylene layer.The foaming processing of second oil sump layer 32 obtains, and the second oil sump layer 32 after foaming produces
Raw hole multiple tiny and unevenly distributed, sound wave, which enters in above-mentioned hole, to be absorbed, to realize the purpose of noise reduction.
Note that the above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The industry
Technical staff it should be appreciated that the present invention is not limited to the embodiments described above, described in above embodiment and specification
Merely illustrate the principles of the invention, without departing from the spirit and scope of the present invention, the present invention also have various change and
It improves, these changes and improvements all fall within the protetion scope of the claimed invention, and claimed range of the invention is by appended
Claims and its equivalent thereof.
Claims (10)
1. a kind of oil sump, which is characterized in that the second oily bottom including being obtained after the first oil sump layer (31) and foamed processing
Shell (32), the first oil sump layer (31) are located above the second oil sump layer (32).
2. oil sump according to claim 1, which is characterized in that the first oil sump layer (31) and the second oily bottom
Shell (32) is ultra-high molecular weight polyethylene layer.
3. a kind of oil sump manufacturing method, which is characterized in that manufacturing oil sump as claimed in claim 1 or 2, including such as
Lower step:
Obtain the first sheet material and the second sheet material；
First sheet material and the second sheet material upper and lower mould swaging are at molding sheet material (1)；
Molding sheet material (1), which is put into mold, carries out compression molding acquisition oil sump base (2)；
Foaming is carried out to second sheet material of oil sump base (2) outer layer, the oil sump base is made to form oil pan body.
4. oil sump manufacturing method according to claim 3, which is characterized in that first sheet material is gathered by super high molecular weight
Ethylene is made, and second sheet material is made of ultra-high molecular weight polyethylene and foaming agent.
5. oil sump manufacturing method according to claim 4, which is characterized in that further comprising the steps of:
Oil pan body is cooling, simultaneously punching obtains oil sump (3) for finishing.
6. oil sump manufacturing method according to claim 3, which is characterized in that in foaming process, upper mould (4) water cooling
Cooling first sheet material, lower die (5) heat second sheet material and foam.
7. oil sump manufacturing method according to claim 3, which is characterized in that first sheet thickness is less than described the
Two sheet thickness.
8. oil sump manufacturing method according to claim 3, which is characterized in that first sheet thickness is 0.5mm-
2mm。
9. oil sump manufacturing method according to claim 8, which is characterized in that second sheet thickness is 1mm-3mm.
10. oil sump manufacturing method according to claim 3, which is characterized in that the foaming be microwave foam or
Infrared foaming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811647793.0A CN109707481A (en) | 2018-12-29 | 2018-12-29 | A kind of oil sump and its manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811647793.0A CN109707481A (en) | 2018-12-29 | 2018-12-29 | A kind of oil sump and its manufacturing method |
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| Publication Number | Publication Date |
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| CN109707481A true CN109707481A (en) | 2019-05-03 |
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ID=66260489
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811647793.0A Pending CN109707481A (en) | 2018-12-29 | 2018-12-29 | A kind of oil sump and its manufacturing method |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108138693A (en) * | 2015-11-06 | 2018-06-08 | 太平洋工业株式会社 | The manufacturing method of oil sump and oil sump |
-
2018
- 2018-12-29 CN CN201811647793.0A patent/CN109707481A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108138693A (en) * | 2015-11-06 | 2018-06-08 | 太平洋工业株式会社 | The manufacturing method of oil sump and oil sump |
Non-Patent Citations (1)
| Title |
|---|
| 周惠久: "《新材料辞典》", 31 December 1996 * |
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Application publication date: 20190503 |
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