CN211218564U - Improved structure of lightweight aluminum piston core mold - Google Patents
Improved structure of lightweight aluminum piston core mold Download PDFInfo
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- CN211218564U CN211218564U CN201922027810.7U CN201922027810U CN211218564U CN 211218564 U CN211218564 U CN 211218564U CN 201922027810 U CN201922027810 U CN 201922027810U CN 211218564 U CN211218564 U CN 211218564U
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Abstract
The utility model relates to an improvement structure of lightweight aluminium piston mandrel, the mandrel includes piston mandrel centre piece. The piston core mold central piece consists of a quadrangular pyramid column and a supporting table. The device is characterized in that the quadrangular pyramid column and the support platform are fastened together through a bolt with a chord section; the bolt with the chord section is provided with a bolt side hole and a bolt tail end face hole; the end face hole at the tail end of the bolt is communicated with the bolt side hole; the side surface of the supporting table is provided with a supporting table side surface hole I and a supporting table side surface hole II; a side hole I of the supporting platform is communicated with a bolt side hole; the long copper pipe is inserted into the end face hole of the bolt and connected through threads; a rectangular pyramid column deep hole is formed in the lower end face of the rectangular pyramid column, and the hole diameter is 2-4 mm larger than the outer diameter of the long copper pipe; the long copper pipe is inserted into the deep hole of the rectangular pyramid column; and a side surface hole II of the supporting platform is communicated with the outside of the chord section of the bolt and the deep hole of the rectangular pyramid column. Have and to use wire-electrode cutting processing faceted pebble recess track, improve the precision, shorten drawing of patterns time and improve the productivity, conveniently regularly clear away the advantage that the deep hole incrustation scale prevented the jam.
Description
Technical Field
The utility model relates to an improvement structure of lightweight aluminum piston mandrel is applied to production lightweight aluminum piston.
Background
The lightweight aluminum piston is provided with three axial pits near the outer side of the pin hole seat and close to the top. People generally adopt the lightweight structure of slider mould casting pit. The sliding block die is provided with pin holes for pin columns of the pin hole die to penetrate through; the pin hole die is provided with a round rod gap track which moves forward and backward by a horizontal round rod of the pin hole die so as to drive the sliding block die to lift; and an inclined cylinder used for linear sliding in the inner cavity of the outer die. The sliding block die is sealed in the outer die cavity by a pressing block frame, and the pressing block frame is fixed with the outer surface of the outer die through a fastener; the inclined column body is limited to slide in an inclined plane sliding groove formed by inclined planes in the outer die cavities which are arranged alternately and mutually parallel and the inclined plane on the pressing block frame. The sliding block die is arranged on a supporting rail fixed with the outer side surface of the outer die.
When the pin hole die is used, the pin hole die moves on the support rail, the horizontal round rod of the pin hole die is pushed into the window of the pressing block frame and enters the round rod gap rail. The round bar gap track is formed by sequentially connecting a downward slope section and a horizontal section. The horizontal round rod is arranged on the downward slope section, and the sliding block die vertically rises; in the horizontal section, the pin hole on the sliding block die is flush with the pin column of the pin hole die in height, and the pin hole die is continuously pushed forward until the pin column completely penetrates into the pin column hole to enable the end face of the pin column to be abutted against the seat sheet in the piston pin hole of the core die.
The core mold comprises a piston pin hole inner seat piece I, a piston pin hole inner seat piece II, a piston skirt piece I, a piston skirt piece II, a piston core mold central piece and a piston stop piece. The piston core mold central piece is composed of a rectangular pyramid column and a supporting table integrally connected with the rectangular pyramid column. The piston skirt piece I and the piston skirt piece II are respectively connected with the prism surfaces on the left side and the right side of the quadrangular pyramid column through a double-groove tenon track. A piston pin hole inner seat piece I and a piston pin hole inner seat piece II are respectively in surface contact with the surfaces of the front side and the rear side of the quadrangular pyramid column, and a piston skirt piece I, a piston core mold central piece and a piston skirt piece II are clamped in the middle. The end faces of the bottom ends of the piston pin hole inner seat piece I, the piston pin hole inner seat piece II, the piston skirt piece I and the piston skirt piece II are all aligned on the table surface of the supporting table. The piston spigot part is annular, is sleeved on the integral outer side of the five parts of the piston pin hole inner seat piece I, the piston pin hole inner seat piece II, the piston skirt part piece I, the piston skirt part piece II and the piston core mold central part, and is located on the supporting surface of the four hydraulic connecting piece of the piston pin hole inner seat piece I, the piston pin hole inner seat piece II, the piston skirt part piece I and the piston skirt part piece II.
The pin hole dies are two in number, and each pin hole die is provided with a water cooling pipeline passing through the inner part of each pin column. Therefore, the water cooling of the core mold is performed by the heat transfer between the pin column I and the pin hole boss piece I, and between the pin column II and the pin hole boss piece II. The disadvantage is that the cooling effect of the core mould is not good.
Disclosure of Invention
The utility model aims at providing an improved structure of direct water-cooled lightweight aluminium piston mandrel of mandrel.
The purpose of the utility model can be achieved by the following technical scheme: (a) the improved structure of the lightweight aluminum piston core mold comprises a piston pin hole inner seat piece I, a piston pin hole inner seat piece II, a piston skirt piece I, a piston skirt piece II, a piston core mold central piece and a piston seam allowance piece; the piston core mold central piece consists of a quadrangular pyramid column and a support table; the piston skirt piece II and the piston skirt piece I are respectively connected with the prism surfaces at the left side and the right side of the quadrangular pyramid column through double-groove tenon tracks; a piston pin hole inner seat piece II and a piston pin hole inner seat piece I are respectively in surface contact with the surfaces of the front side and the rear side of the quadrangular pyramid column, and a piston skirt piece I, a piston core mold central piece and a piston skirt piece II are clamped in the middle; the end surfaces of the bottom ends of the piston pin hole inner seat piece I, the piston pin hole inner seat piece II, the piston skirt piece I and the piston skirt piece II are all aligned on the table surface of the supporting table; the piston spigot is sleeved on the integral outer side of the five parts of the piston pin hole inner seat piece I, the piston pin hole inner seat piece II, the piston skirt piece I, the piston skirt piece II and the piston core mold central piece, and is positioned on the support surfaces of the four hydraulic connecting pieces of the piston pin hole inner seat piece I, the piston pin hole inner seat piece II, the piston skirt piece I and the piston skirt piece II;
the method is characterized in that:
(i) the quadrangular pyramid column and the support platform are fastened together through a bolt with a chord section; the bolt with the chord section is provided with a bolt side hole and a bolt tail end face hole; the end face hole at the tail end of the bolt is communicated with the bolt side hole;
(ii) the side surface of the supporting table is provided with a supporting table side surface hole I and a supporting table side surface hole II; a side hole I of the supporting platform is communicated with a bolt side hole;
(iii) the long copper pipe is inserted into the end face hole of the bolt and connected through threads;
(iv) a rectangular pyramid column deep hole is formed in the lower end face of the rectangular pyramid column, and the hole diameter is 2-4 mm larger than the outer diameter of the long copper pipe; the long copper pipe is inserted into the deep hole of the rectangular pyramid column;
(v) and a side surface hole II of the supporting platform is communicated with the outside of the chord section of the bolt and the deep hole of the rectangular pyramid column.
(b) a the improved structure of the lightweight aluminum piston core mold is characterized in that a double-groove tenon track surface formed by connecting the left and right edge surfaces of a quadrangular pyramid column with a piston skirt piece I and a piston skirt piece II respectively is a double-groove tenon track surface formed by cutting and separating the warp of an integral piece formed by combining the piston skirt piece I, the quadrangular pyramid column and the piston skirt piece II.
The utility model has the advantages of as follows:
1. the quadrangular pyramid column is separated from the supporting table, the prismatic surface groove tracks on the left side and the right side of the quadrangular pyramid column can be machined by linear cutting, and compared with the original method that the quadrangular pyramid column and the supporting table are integrally connected, the precision of connection with the piston skirt piece I and the piston skirt piece II can be improved only by milling; thereby improving the accuracy of the cast skirt thickness.
2. The water cooling pipeline is directly communicated with the interior of the core mould central piece of the piston, the core mould has the same and similar heat transfer cooling efficiency for 360 degrees along the radial direction of the central line, so that casting materials forming the side wall of the piston in casting have the same and similar thermodynamic properties, the cooling process is controllable, and a foundation is laid for improving other properties; meanwhile, the time for demoulding is shortened, and the productivity is improved.
3. The adopted bolt with the chord section connects the rectangular pyramid column with the supporting table, so that the rectangular pyramid column can be conveniently detached to regularly clear water scale in the deep hole in the column, and the blockage is prevented.
Drawings
Fig. 1 is a schematic view of the assembly structure of the present invention.
In the figure, 1 is a hydraulic push-pull connecting piece of a piston core mould central piece, 5 is a piston spigot piece, 7 is a piston pin hole inner seat piece II, 9 is a piston skirt piece I, 11 is the piston core mould central piece, 13 is the piston skirt piece II, and 15 is the piston pin hole inner seat piece I.
Fig. 2 is an exploded view of fig. 1.
In the figure, 1 is a hydraulic push-pull connecting piece of a piston core mould central piece, 15 is a piston pin hole inner seat piece I, 7 is a piston pin hole inner seat piece II, 5 is a piston spigot piece, 13 is a piston skirt piece II, 9 is a piston skirt piece I, and 11 is the piston core mould central piece.
Fig. 3 is a schematic view of the piston core mold core piece viewed in the east-south direction.
In the figure, 1 is a hydraulic push-pull connecting piece of a piston core mould central piece, 16 is a support table, 17 is a prism surface track groove, 19 is a quadrangular pyramid column, 21 is a support table central hole, and 23 is a support table side surface hole I.
Fig. 4 is a schematic view of the piston core mold core piece looking southwest.
In the figure, 1 is a hydraulic push-pull connecting piece of a piston core mould central piece, 25 is a side hole II of a supporting platform, 17 is a prismatic surface track groove, and 19 is a quadrangular pyramid column.
Fig. 5 is a southwest view structure schematic diagram of the bolt with the chord section.
In the figure, 27 is a chord section of the bolt, and 29 is a terminal end face hole of the bolt.
FIG. 6 is a schematic view of a southeast view of a bolt with a tangential section
In the figure 31 is a bolt side hole.
Fig. 7 is a schematic view of a long copper tube structure.
In the figure 33 is a thread.
Fig. 8 is a cross-sectional view of the piston core mandrel centerpiece taken along the centerline, the centerline of the pedestal side opening I, and the centerline of the pedestal side opening II.
In the figure, 34 is a bolt with a chord section, 16 is a support table, 19 is a quadrangular pyramid column, and 35 is a long copper pipe.
Detailed Description
The improved structure of the lightweight aluminum piston core mold comprises a piston pin hole inner seat piece I (15), a piston pin hole inner seat piece II (7), a piston skirt piece I (9), a piston skirt piece II (13), a piston core mold central piece (11) and a piston spigot piece (5); the piston core mold central piece consists of a quadrangular pyramid column (19) and a supporting table (16); the piston skirt piece II and the piston skirt piece I are respectively connected with the prism surfaces at the left side and the right side of the quadrangular pyramid column through double-groove tenon tracks; a piston pin hole inner seat piece II and a piston pin hole inner seat piece I are respectively in surface contact with the surfaces of the front side and the rear side of the quadrangular pyramid column, and a piston skirt piece I, a piston core mold central piece and a piston skirt piece II are clamped in the middle; the end surfaces of the bottom ends of the piston pin hole inner seat piece I, the piston pin hole inner seat piece II, the piston skirt piece I and the piston skirt piece II are all aligned on the table surface of the supporting table; the piston spigot is sleeved on the whole outer side of the combination of the piston pin hole inner seat piece I, the piston pin hole inner seat piece II, the piston skirt piece I, the piston skirt piece II and the piston core mold central piece and is located on the supporting surfaces of the four hydraulic connecting pieces, namely the piston pin hole inner seat piece I (15), the piston pin hole inner seat piece II (7), the piston skirt piece I (9) and the piston skirt piece II (13).
The utility model discloses an improvement part is:
(i) the quadrangular pyramid column (19) and the support platform (16) are fastened together through a bolt (34) with a chord section; the bolt with the chord section is provided with a bolt side hole (31) and a bolt tail end face hole (29); the bolt end face hole (29) is communicated with the bolt side hole (31). The bolt chord section (27) is used for flowing the return water. The bolt side hole (31) is a hole (29) from the end face of the bolt end, where water is required to pass. The bolt with the chord section penetrates out of the center hole (21) of the support platform along the center line and penetrates into the quadrangular pyramid column (19) to connect the quadrangular pyramid column (19) and the support platform (16) into a whole.
(ii) The side surface of the supporting platform (16) is provided with a supporting platform side surface hole I (23) and a supporting platform side surface hole II (25); the side surface hole I (23) of the supporting platform is communicated with the bolt side hole (31). In the core mold, the support table side surface hole I (23) is a water inlet.
(iii) The long copper pipe (35) is inserted into the end surface hole (29) at the tail end of the bolt and connected through a thread (33). Inside the long copper pipe, water is supplied to flow.
(iv) A rectangular pyramid column deep hole is formed in the lower end face of the rectangular pyramid column, and the hole diameter is 2-4 mm larger than the outer diameter of the long copper pipe; the long copper tube is inserted into the deep hole of the rectangular pyramid column. The long copper pipe is internally provided with a water inlet channel, and a cavity between the rectangular pyramid column deep hole and the outer surface of the long copper pipe is a water return channel. The distance between the tail end of the long copper pipe and the bottom surface of the deep hole of the rectangular pyramid column is 2-5 mm.
(v) And a side surface hole II (25) of the supporting platform is communicated with the outside of a bolt chord section (27) and a deep hole of the rectangular pyramid column. In the core mold, the support table side surface hole II is an outlet after the cooling water is refluxed.
In order to improve the precision of the connection between the left and right two edge surfaces of the quadrangular pyramid column and the piston skirt piece I and II through the double-groove tenon tracks, an integral piece formed by combining the piston skirt piece I, the quadrangular pyramid column and the piston skirt piece II can be manufactured firstly, and then the piston skirt piece I, the quadrangular pyramid column and the piston skirt piece II are obtained through one-time linear cutting separation. The connection between them is a surface contact, the whole side of the rail connection is the rail surface of the double groove tenon.
The bolt with the chord section has the following four functions: firstly, the quadrangular pyramid column and the supporting table are connected into a whole. Secondly, the inside and the outside are water channels. Thirdly, can screw off, regularly clear away the interior incrustation scale of rectangular pyramid column deep hole to prevent the jam. The top end of the quadrangular pyramid column is thinner, so that the diameter of a deep hole in the column is smaller and is only 8 mm, and scale is easy to deposit and block. Fourthly, before assembly, a piston skirt piece I, a quadrangular pyramid column and a piston skirt piece II can be manufactured into an integral piece, and then three components are manufactured by adopting one-time linear cutting and separation; therefore, the processing precision of the double-groove track on the left and right prism faces of the quadrangular pyramid column is improved.
The quadrangular pyramid column is in a wedge shape, and is easy to pull out in demoulding due to the shrinkage of water-cooling volume. The demolding time is shortened, and the productivity is improved.
The utility model discloses during the use, the cooling water is followed supporting bench side hole I (23), reachs long copper pipe (35) inside from the end opening outflow through bolt side opening (31), bolt end face hole (29) according to the preface. The water flowing out absorbs heat from the deep hole side wall of the rectangular pyramid column. The water after absorbing heat flows along the chord section (27) of the bolt and flows out from the side hole II (25) of the support platform. During the continuous flow of water, the heat stored in the casting material flows radially through the sidewall of the core mold to the deep-hole side of the rectangular pyramid pillar and lowers the temperature of the casting material. When the temperature is reduced to the preset temperature, the core mould can be removed according to the conventional operation.
Claims (2)
1. The improved structure of the lightweight aluminum piston core mold comprises a piston pin hole inner seat piece I (15), a piston pin hole inner seat piece II (7), a piston skirt piece I (9), a piston skirt piece II (13), a piston core mold central piece (11) and a piston spigot piece (5); the piston core mold central piece consists of a quadrangular pyramid column (19) and a supporting table (16); the piston skirt piece II and the piston skirt piece I are respectively connected with the prism surfaces at the left side and the right side of the quadrangular pyramid column through double-groove tenon tracks; a piston pin hole inner seat piece II and a piston pin hole inner seat piece I are respectively in surface contact with the surfaces of the front side and the rear side of the quadrangular pyramid column, and a piston skirt piece I, a piston core mold central piece and a piston skirt piece II are clamped in the middle; the end surfaces of the bottom ends of the piston pin hole inner seat piece I, the piston pin hole inner seat piece II, the piston skirt piece I and the piston skirt piece II are all aligned on the table surface of the supporting table; the piston spigot is sleeved on the integral outer side of the combination of the piston pin hole inner seat piece I, the piston pin hole inner seat piece II, the piston skirt piece I, the piston skirt piece II and the piston core mold central piece and is positioned on the support surfaces of the four hydraulic connecting pieces of the piston pin hole inner seat piece I (15), the piston pin hole inner seat piece II (7), the piston skirt piece I (9) and the piston skirt piece II (13);
the method is characterized in that:
(i) the quadrangular pyramid column (19) and the support platform (16) are fastened together through a bolt (34) with a chord section; the bolt with the chord section is provided with a bolt side hole (31) and a bolt tail end face hole (29); the end face hole (29) at the tail end of the bolt is communicated with the bolt side hole (31);
(ii) the side surface of the supporting platform (16) is provided with a supporting platform side surface hole I (23) and a supporting platform side surface hole II (25); a side hole I (23) of the supporting platform is communicated with a bolt side hole (31);
(iii) the long copper pipe (35) is inserted into the end surface hole (29) at the tail end of the bolt and connected through a thread (33);
(iv) a rectangular pyramid column deep hole is formed in the lower end face of the rectangular pyramid column, and the hole diameter is 2-4 mm larger than the outer diameter of the long copper pipe; the long copper pipe is inserted into the deep hole of the rectangular pyramid column;
(v) and a side surface hole II (25) of the supporting platform is communicated with the outside of a bolt chord section (27) and a deep hole of the rectangular pyramid column.
2. The improved structure of the lightweight aluminum piston core mold as recited in claim 1, wherein the two-way groove and tongue rail surfaces of the right and left four-sided pyramid cylinder, which are connected to the piston skirt piece I and the piston skirt piece II, respectively, are two-way groove and tongue rail surfaces obtained by cutting and separating the whole piece of the piston skirt piece I, the four-sided pyramid cylinder, and the piston skirt piece II through the warp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922027810.7U CN211218564U (en) | 2019-11-22 | 2019-11-22 | Improved structure of lightweight aluminum piston core mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922027810.7U CN211218564U (en) | 2019-11-22 | 2019-11-22 | Improved structure of lightweight aluminum piston core mold |
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| Publication Number | Publication Date |
|---|---|
| CN211218564U true CN211218564U (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922027810.7U Active CN211218564U (en) | 2019-11-22 | 2019-11-22 | Improved structure of lightweight aluminum piston core mold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112264586A (en) * | 2020-10-26 | 2021-01-26 | 湖南江滨机器（集团）有限责任公司 | Cooling method for piston casting die shaft pin and casting piston pin hole |
-
2019
- 2019-11-22 CN CN201922027810.7U patent/CN211218564U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112264586A (en) * | 2020-10-26 | 2021-01-26 | 湖南江滨机器（集团）有限责任公司 | Cooling method for piston casting die shaft pin and casting piston pin hole |
| CN112264586B (en) * | 2020-10-26 | 2022-04-12 | 湖南江滨机器（集团）有限责任公司 | Cooling method for piston casting die shaft pin and casting piston pin hole |
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