CN220407020U - Piston internal mold slicing structure - Google Patents
Piston internal mold slicing structure Download PDFInfo
- Publication number
- CN220407020U CN220407020U CN202223483788.5U CN202223483788U CN220407020U CN 220407020 U CN220407020 U CN 220407020U CN 202223483788 U CN202223483788 U CN 202223483788U CN 220407020 U CN220407020 U CN 220407020U
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- Prior art keywords
- piston
- sheets
- outer middle
- plates
- middle plate
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- 238000000034 method Methods 0.000 claims description 2
- 239000012528 membrane Substances 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Moulds, Cores, Or Mandrels (AREA)
Abstract
The utility model discloses a piston inner die slicing structure, which comprises two side plates and a middle plate module arranged between the two side plates, wherein the middle plate module comprises two outer middle plates and an inner middle plate arranged between the two outer middle plates; the two outer middle sheets are in a trapezoid shape with a small upper part and a large lower part, wherein the parts of the two outer middle sheets corresponding to the piston pin hole seat and the lower part of the piston pin hole seat are widened parts, so that the width of the two side sheets is reduced, and the part with large inner side break difference of the piston can be avoided when the side sheets are taken off, thereby smoothly taking off the membrane. The utility model has simple structure and easy realization.
Description
Technical Field
The utility model relates to the technical field of piston dies, in particular to a piston inner die slicing structure.
Background
As shown in fig. 1-2, the inner mold of the existing piston is composed of two side pieces 01 and three middle pieces 02, and the widths of the existing side pieces 01 and middle pieces 02 are basically consistent from top to bottom (without considering the draft angle). As shown in fig. 3, when the difference between the a-position and the a-position of the piston cavity is relatively large, demolding cannot be performed according to the conventional demolding and slicing method, and since the inner width B of the side piece is larger than the inner diameter D (as shown in fig. 4) of the piston cavity, demolding cannot be realized, and therefore, special design of the inner piston mold slicing is required.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model aims to provide a piston inner die slicing structure so as to ensure demolding.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the piston inner die slicing structure comprises two side plates and a middle plate module arranged between the two side plates, wherein the middle plate module comprises two outer middle plates and an inner middle plate arranged between the two outer middle plates; the two outer middle sheets are in a trapezoid shape with a small upper part and a large lower part, wherein the parts of the two outer middle sheets corresponding to the piston pin hole seat and the lower part of the piston pin hole seat are widened parts.
Further, the joint surfaces of the two outer middle sheets and the inner middle sheet are respectively provided with a draft angle.
Further, the joint surfaces of the two side plates and the middle plate module are respectively provided with a draft angle.
According to the technical scheme, the two outer middle sheets are provided with the widened parts, so that the width of the two side sheets is reduced, and the position with large inner side break difference of the piston can be avoided when the side sheets are taken off, so that the side sheets are taken off from the membrane smoothly. The utility model has simple structure and easy realization.
Drawings
The utility model is described in further detail below with reference to the drawings and detailed description;
FIG. 1 is a front view of a piston;
FIG. 2 is a bottom view of the piston;
FIG. 3 is a front view of a prior art piston inner mold;
FIG. 4 is a cross-sectional view of A-A of FIG. 1;
FIG. 5 is a side view of an in-piston mold segment of the present utility model;
FIG. 6 is a cross-sectional view of an in-piston mold segment of the present utility model;
fig. 7 is a side view of the inner sheet module.
Detailed Description
As shown in fig. 5 to 7, the piston inner die split structure of the present utility model comprises two side plates 1 and a middle plate module set arranged between the two side plates 1, wherein the middle plate module set comprises two outer middle plates 2 and an inner middle plate 3 arranged between the two outer middle plates 2; the two outer middle sheets 2 are in a trapezoid shape with a small upper part and a large lower part, wherein the parts of the two outer middle sheets 2 corresponding to the piston pin hole seat and the lower part of the piston pin hole seat are widened parts.
The demolding sequence of the piston inner mold is that the middle piece module is firstly arranged and then two side pieces 1 are arranged. The two outer middle sheets 2 are provided with the widened parts, the widths of the two side sheets 1 are reduced, so that the position with large inner side gap of the piston can be avoided when the side sheets 1 are taken off, and the film can be smoothly taken off.
In addition, in order to facilitate the demolding, the bonding surfaces of the two outer middle sheets 2 and the inner middle sheet 3 are respectively provided with draft angles, and the bonding surfaces of the two side sheets 1 and the middle sheet module are respectively provided with draft angles.
The practice of the utility model is described above with reference to the accompanying drawings, but the utility model is not limited to the specific embodiments described above, which are intended to be illustrative rather than limiting, and it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.
Claims (3)
1. The piston inner die slicing structure comprises two side plates and a middle plate module arranged between the two side plates, wherein the middle plate module comprises two outer middle plates and an inner middle plate arranged between the two outer middle plates; the method is characterized in that: the two outer middle sheets are in a trapezoid shape with a small upper part and a large lower part, wherein the parts of the two outer middle sheets corresponding to the piston pin hole seat and the lower part of the piston pin hole seat are widened parts.
2. The in-piston mold slicing structure of claim 1, wherein: the joint surfaces of the two outer middle sheets and the inner middle sheet are respectively provided with a draft angle.
3. The in-piston mold slicing structure of claim 1, wherein: the joint surfaces of the two side plates and the middle plate module are respectively provided with a draft angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223483788.5U CN220407020U (en) | 2022-12-26 | 2022-12-26 | Piston internal mold slicing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223483788.5U CN220407020U (en) | 2022-12-26 | 2022-12-26 | Piston internal mold slicing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220407020U true CN220407020U (en) | 2024-01-30 |
Family
ID=89641074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223483788.5U Active CN220407020U (en) | 2022-12-26 | 2022-12-26 | Piston internal mold slicing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220407020U (en) |
-
2022
- 2022-12-26 CN CN202223483788.5U patent/CN220407020U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |