CN207806522U

CN207806522U - A kind of diesel engine oil duct core mold

Info

Publication number: CN207806522U
Application number: CN201721863823.2U
Authority: CN
Inventors: 宁科明; 李小举
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2017-12-27
Filing date: 2017-12-27
Publication date: 2018-09-04
Anticipated expiration: 2027-12-27

Abstract

The utility model discloses a kind of diesel engine oil duct core molds, including：Upper core box, lower core box and positioning pin, the lower core box open up the first half slot, and the upper core box opens up the second half slot, the core mold further includes compact heap, the upper core box opens up several back-up sand mouths, and upper core box is connect by positioning pin with lower core box, and the compact heap is located in upper core box.The utility model has many advantages, such as simple in structure, easy to operate, obtained sand core quality of finished product good.

Description

A kind of diesel engine oil duct core mold

Technical field

The utility model is related to diesel engine casting fields, more particularly to a kind of diesel engine oil duct core mold.

Background technology

Casting large-scale diesel engine, since oil passage sand core length is more than 2 meters, cannot the coremaking on existing core shooter, can only Using manual core making.Current craft core box one side of something is whole, and another one side of something semi-circular shape need to scrape by hand, thus the sand of manual processing The core degree of packing is low, rough surface, and scab often occurs in casting, quick-fried sand influences castability.Existing oil passage sand core mold exists Operate the shortcomings of complicated, labour's consumption is more, sand core is of poor quality.

The disclosure of background above technology contents is only used for design and the technical solution that auxiliary understands the utility model, not The prior art for necessarily belonging to present patent application, no tangible proof show the above present patent application the applying date In the case of having disclosed, above-mentioned background technology should not be taken to the novelty and creativeness of evaluation the application.

Utility model content

The utility model aim is to propose a kind of diesel engine oil simple in structure, easy to operate, finished product quality is high Road core mold, to solve above-mentioned complicated, complicated and finished product poor quality the technology of operation of the existing technology Problem.

For this purpose, the utility model proposes a kind of diesel engine oil duct core molds, including：Upper core box, lower core box and positioning pin, The lower core box opens up the first half slot, and the upper core box opens up the second half slot, and the core mold further includes compact heap, institute It states upper core box and opens up several back-up sand mouths, upper core box is connect by positioning pin with lower core box, and the compact heap is located in upper core box.

Further, the back-up sand mouth side wall forms angle α with upper core box top surface, and angular range is 30 °≤α≤60 °.

Further, the back-up sand mouth side wall forms angle α with upper core box top surface, and angle is 45 °.

Further, the compression Block- matching back-up sand mouth, the compact heap lower end are the arc surface to arch upward upwards, arc surface With the first half slot, the second half slot piece together radius one to circular groove.

Further, the back-up sand mouth is opened in upper core box centre position, and the compact heap upper end is more than back-up sand mouth upper end.

The advantageous effect that the utility model is compared with the prior art includes：(1) the utility model by upper core box, lower core box, Positioning pin and compact heap are constituted, simple in structure, easy to operate；(2) upper core box opens up long section back-up sand mouth, can accelerate back-up sand speed Degree improves production efficiency；(3) the sand core finished product that obtains is complete, consolidation, smooth, and final product quality is high.

Description of the drawings

Fig. 1 is the diagrammatic cross-section of the utility model；

Fig. 2 is the diagrammatic cross-section of the utility model；

Fig. 3 is the schematic diagram of the utility model.

It is marked in figure：1- lower core box, 2- upper core box, 3- back-up sand mouths, 31- back-up sand mouth side walls, 4- compact heaps, 5- circular grooves, α- Back-up sand mouth side wall forms angle with upper core box top surface.

Specific implementation mode

With reference to embodiment and compares attached drawing the utility model is described in further detail.It should be emphasized that It is that following the description is only exemplary, rather than in order to limit the scope of the utility model and its application.

Embodiment 1

As shown in Figs. 1-3, the utility model discloses a kind of diesel engine oil duct core molds, including：Upper core box 2, upper core Box 2 opens up back-up sand mouth 3, and back-up sand mouth side wall 31 forms angle α with 2 top surface of upper core box, and angle is 45 °.Lower core box 1 opens up the first half Circular groove, upper core box 2 open up the second half slot, and upper core box 2 is with lower core box 1 by positioning pin connection.Compact heap 4 matches back-up sand mouth 3, 4 upper end of compact heap is more than 3 upper end of back-up sand mouth, prevents compact heap from falling impaired with the friction of back-up sand mouth 3, can also do gage use；Pressure Tight block lower end is the arc surface to arch upward upwards, arc surface and the first half slot, the second half slot piece together radius one to circular groove 5。

In sand core manufacturing process, first mold is connected, core sand is entered into circular groove 5 by back-up sand mouth 3, is carried out in back-up sand With tool ram-jolt, compacting, compact heap 4 is covered until filling up；After core sand places about half an hour solidification, upper core box can be sling 2, finished product sand core is removed from the molds with tool.

Embodiment 2

The present embodiment and embodiment 1 only difference is that：Back-up sand mouth side wall 31 forms angle α, angle with 2 top surface of upper core box It is 30 °.

Embodiment 3

The present embodiment and embodiment 1 only difference is that：Back-up sand mouth side wall 31 forms angle α, angle with 2 top surface of upper core box It is 60 °.

The utility model is made of upper core box, lower core box, positioning pin and compact heap, simple in structure, easy to operate；Upper core box Long section back-up sand mouth is opened up, back-up sand speed can be accelerated, improves production efficiency；Obtained sand core finished product is complete, consolidation, smooth, at Quality is high.

The utility model is not only restricted to specific embodiment disclosed here, but the utility model may further include belonging to this reality With all embodiments and its equivalent of novel range.

Claims

1. a kind of diesel engine oil duct core mold, including：Upper core box, lower core box and positioning pin, the lower core box open up the first half Circular groove, the upper core box open up the second half slot, it is characterised in that：The core mold further includes compact heap, the upper core box Several back-up sand mouths are opened up, upper core box is connect by positioning pin with lower core box, and the compact heap is located in upper core box.

2. diesel engine oil duct core mold as described in claim 1, it is characterised in that：The back-up sand mouth side wall and upper core box top Face forms angle α, and angular range is 30 °≤α≤60 °.

3. diesel engine oil duct core mold as claimed in claim 2, it is characterised in that：The back-up sand mouth side wall and upper core box top Face forms angle α, and angle is 45 °.

4. diesel engine oil duct core mold as described in claim 1, it is characterised in that：The compression Block- matching back-up sand mouth, institute It is the arc surface to arch upward upwards to state compact heap lower end, arc surface and the first half slot, the second half slot piece together radius one to Circular groove.

5. diesel engine oil duct core mold as described in claim 1, it is characterised in that：The back-up sand mouth is opened in upper core box Between position, the compact heap upper end be more than back-up sand mouth upper end.