CN203737957U - Hoisting and resetting device for lower ejector core plate - Google Patents
Hoisting and resetting device for lower ejector core plate Download PDFInfo
- Publication number
- CN203737957U CN203737957U CN201420162154.6U CN201420162154U CN203737957U CN 203737957 U CN203737957 U CN 203737957U CN 201420162154 U CN201420162154 U CN 201420162154U CN 203737957 U CN203737957 U CN 203737957U
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- CN
- China
- Prior art keywords
- plunger tip
- tip plate
- lower plunger
- suspension rod
- resetting means
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a hoisting and resetting device for a lower ejector core plate. The hoisting and resetting device comprises hoisting rods, lock nuts for the hoisting rods, and reset springs, wherein the hoisting rods adopt bolt-shaped structures, and comprise bolt heads and screws; the hoisting rods can penetrate through the lower ejector core plate in a sliding manner; the bolt heads are propped against the bottom surface of the lower ejector core plate; the screws are fixedly arranged in a lower core box in a penetrating manner; the lock nuts are in adaptive screw connection with one ends, extending out of the lower core box, of the screws; the reset springs are arranged on the screws of the hoisting rods in a penetrating manner; the upper ends of the reset springs are butted with the bottom surface of the lower core box; the lower ends of the reset springs are butted with the top surface of the lower ejector core plate. The hoisting and resetting device is simple and reasonable in structure; as a resetting device is arranged between the lower core box and the lower ejector core plate, the lower ejector core plate can be reset automatically and timely. Therefore, a core box mould can be stable in operation, high in core-making efficiency, excellent in core-making quality, and long in service life.
Description
Technical field
The utility model relates to core mould field, particularly a kind of lower plunger tip plate lifting resetting means.
Background technology
Core mould is a kind of mould the most frequently used in casting mould, and its effect is to produce core in castings production process.Core mould is generally all arranged on core shooter, and with core shooter co-ordination, its primary structure generally all comprises core box, lower core box, penetrates sand system and ejection system etc.Ejection system, is divided into again top ejection system, bottom ejection system and side direction ejection system etc. conventionally.
Wherein, bottom ejection system comprises lower plunger tip plate, lower plunger tip bar, return guide rod, suspension rod etc.In current core mould bottom ejection system, the thrust of equipment is only responsible for lower plunger tip plate jack-up, not responsible lower plunger tip sheet reset, and lower plunger tip plate only resets by self gravitation.But owing to having frictional force between lower plunger tip bar and lower core box, especially in a fairly large number of situation of lower plunger tip bar, the gravity of lower plunger tip plate self cannot overcome the frictional force between lower plunger tip bar and lower core box, cause lower plunger tip plate not reset in time, now often need manually with sledgehammer, lower plunger tip bar to be gone down, until lower plunger tip sheet reset, this not only shortens the service life of mould, but also has a strong impact on the coremaking efficiency of mould.
In addition, when coremaking, especially penetrating sand and air blowing cure stage, sand is deposited on lower plunger tip plate by the fit clearance between lower plunger tip bar and lower core box.And these long-pending sand are also often accumulated under suspension rod in end flanges by the fit clearance between lower plunger tip plate and suspension rod.Accumulate over a long period, just accumulated one deck sand under suspension rod in end flanges, the sand of these accumulations hinders lower plunger tip sheet reset.Now, even if there is very strong external force, be also difficult to the sand of accumulating on flange to squeeze out, cause mould matched moulds not in place, affect quality and the coremaking efficiency of coremaking.
Utility model content
It is a kind of simple and reasonable that the purpose of this utility model is to provide, can automatically reset in time, make core mould stable, coremaking efficiency is high, coremaking quality is good, the lower plunger tip plate lifting resetting means that die life is long, thus the lower plunger tip plate that overcomes existing core mould can not reset in time, and then shorten service life of mould, but also have a strong impact on the shortcoming of the coremaking efficiency of mould.
For achieving the above object, the utility model provides time plunger tip plate lifting resetting means, comprising: suspension rod, it is bolt shape, comprising: bolt head and screw rod, and what suspension rod can slide passes lower plunger tip plate, bolt head backstop is in the bottom surface of lower plunger tip plate, and screw rod is fixedly located in lower core box; Suspension rod locking nut, one end adaptation that itself and described screw rod stretch out lower core box is spirally connected; And back-moving spring, is located on the screw rod of suspension rod, the bottom surface butt of the upper end of back-moving spring and described lower core box, the end face butt of lower end and described lower plunger tip plate.
In technique scheme, screw rod comprises: near the polished rod section of bolt head and be positioned at the external thread section of this polished rod section outer end.
In technique scheme, this lower plunger tip plate lifting resetting means also comprises: suspension rod locking cap, one end adaptation that this suspension rod locking cap and described screw rod stretch out suspension rod locking nut is spirally connected.
In technique scheme, this lower plunger tip plate lifting resetting means also comprises: dust ring cover plate and dust ring, and described dust ring is laid in the dust ring installing hole of described lower plunger tip plate, and described dust ring cover plate is pushed down dust ring and is arranged on lower plunger tip plate.
In technique scheme, the upper/lower terminal of suspension rod is equipped with inner hexagonal hole.
Compared with prior art, the utlity model has following beneficial effect: this lower plunger tip plate lifting resetting means is simple and reasonable, by resetting means being set between lower core box and lower plunger tip plate, lower plunger tip plate automatically in time can reset, make core mould stable, coremaking efficiency is high, coremaking quality is good, die life is long, thereby the lower plunger tip plate that overcomes existing core mould can not reset in time, and then shorten service life of mould, but also have a strong impact on the shortcoming of the coremaking efficiency of mould.
Brief description of the drawings
Fig. 1 is according to the use status architecture schematic diagram of lower plunger tip plate lifting resetting means of the present utility model.
Fig. 2 is according to the broken section structural representation of the use state of lower plunger tip plate lifting resetting means of the present utility model.
Fig. 3 is according to the lower plunger tip plate sectional structure schematic diagram of lower plunger tip plate lifting resetting means of the present utility model.
Main description of reference numerals:
1-suspension rod, 11-inner hexagonal hole, 2-suspension rod locking cap, 3-suspension rod locking nut, 4-back-moving spring, 5-dust ring cover plate, 6-dust ring, plunger tip plate under 7-, 71-dust ring installing hole, core box under 8-, 81-back-moving spring mounting plane, the upper core box of 9-, 91-suspension rod resigning hole.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail, but is to be understood that protection domain of the present utility model is not subject to the restriction of detailed description of the invention.
Unless separately there is other clearly to represent, otherwise in whole description and claims, term " comprises " or its conversion was stated being understood to include as " comprising " or " including " etc. element or part, and do not get rid of other element or other part.
As shown in Figure 1 to Figure 2, be to be laid in multiple between lower core box and lower plunger tip plate according to the lower plunger tip plate lifting resetting means of the utility model detailed description of the invention, be used for lifting the lower plunger tip plate that resets, the lower plunger tip plate lifting resetting means of the present embodiment is four, is laid in respectively under rectangle under core box and rectangle between four jiaos of plunger tip plate.The concrete structure of this lower plunger tip plate lifting resetting means comprises: suspension rod 1, suspension rod locking cap 2, suspension rod locking nut 3, back-moving spring 4, dust ring cover plate 5 and dust ring 6.Wherein, what suspension rod 1 can slide passes after lower plunger tip plate 7, and its top is fixedly located in lower core box 8, and suspension rod locking cap 2 and suspension rod locking nut 3 are screwed to the external part of suspension rod 1.Back-moving spring 4 is located on suspension rod 1, and between lower core box and lower plunger tip plate, after equipment thrust is removed, lower plunger tip plate 7 moves downward until lower plunger tip plate 7 resets, for coremaking is next time prepared under the spring force of back-moving spring 4 and the effect of self gravitation.This lower plunger tip plate lifting resetting means is simple and reasonable, and by resetting means being set between lower core box and lower plunger tip plate, the lower plunger tip plate that can automatically reset in time, makes core mould stable, and coremaking efficiency is high, and coremaking quality is good, and die life is long.
Suspension rod 1 is bolt shape, comprising: bolt head and screw rod, and this bolt head has and screws flat position, facilitates adjusting and the handling of suspension rod 1; Screw rod comprises: near the polished rod section of bolt head and be positioned at the external thread section of this polished rod section outer end, wherein, polished rod section is used for wearing back-moving spring 4, and external thread section is for being spirally connected fixing with lower core box 8.The upper/lower terminal of suspension rod 1 is equipped with inner hexagonal hole 11.
As shown in Figure 3, on lower plunger tip plate 7, offer dust ring installing hole 71, for dust ring 6 is installed, dust ring 6 can prevent that long-pending sand wash is in 1 time end flanges of suspension rod; Lower core box 8 relevant positions, the back side are provided with back-moving spring mounting plane 81, for butt back-moving spring 4, prevent back-moving spring 4 upper ends and lower core box 8 back side butt shakinesses; Be provided with suspension rod resigning hole 91 in upper core box 9 relevant positions, prevent that suspension rod 1, suspension rod locking nut 3 and suspension rod locking cap 2 etc. from interfering with upper core box 9.
When assembling, dust ring 6 is arranged on lower plunger tip plate 7, and dust ring cover plate 5 is pushed down dust ring 6 and is arranged on lower plunger tip plate 7; Suspension rod 1 passes lower plunger tip plate 7, dust ring 6, dust ring cover plate 5 and back-moving spring 4 successively, and is arranged on lower core box 8; Suspension rod locking nut 3 and suspension rod locking cap 2 are arranged on the upper end of suspension rod 1, and suspension rod locking nut 3 is for the external thread section from upper end locking suspension rod 1; Suspension rod locking cap 2 is screwed to suspension rod 1 top, for preventing the external thread section of long-pending sand wash at suspension rod 1.
Introduce in detail the overall process that lower plunger tip plate lifting resets below:
First, before mould uses, by regulating the height of suspension rod 1, allow lower plunger tip plate 7 drop on the bolt head of suspension rod 1 lower end, lower plunger tip plate 7 is in original state, descend plunger tip plate 7 to reset, plunger tip bar is just flat with mold cavity face at present for this, then locks suspension rod 1 with suspension rod locking nut 3 and suspension rod locking cap 2.Penetrate before and after sand at equipment, before core ejects, lower plunger tip plate 7 is all in original state;
Secondly, while ejecting core, lower plunger tip plate 7 rises under the effect of equipment thrust, until the lower plunger tip bar on lower plunger tip plate 7 ejects core to proper height.Now, back-moving spring 4 is in compressive state;
Again, take out core;
Finally, equipment thrust is removed, and lower plunger tip plate 7 moves downward until lower plunger tip plate 7 resets, for coremaking is next time prepared under the effect of spring force and self gravitation.
To sum up, this lower plunger tip plate lifting resetting means is simple and reasonable, by resetting means being set between lower core box and lower plunger tip plate, the lower plunger tip plate that can automatically reset in time, makes core mould stable, coremaking efficiency is high, coremaking quality is good, and die life is long, thereby the lower plunger tip plate that overcomes existing core mould can not reset in time, and then shorten service life of mould, but also have a strong impact on the shortcoming of the coremaking efficiency of mould.
The aforementioned description to concrete exemplary of the present utility model is in order to illustrate and the object of illustration.These descriptions not want the utility model to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.Exemplary embodiment is selected and the object described is to explain certain principles of the present utility model and practical application thereof, thereby made those skilled in the art can realize and utilize various exemplary of the present utility model and various selection and change.Scope of the present utility model is intended to be limited by claims and equivalents thereof.
Claims (5)
1. a lower plunger tip plate lifting resetting means, is characterized in that, comprising:
Suspension rod, it is bolt shape, comprising: bolt head and screw rod, what described suspension rod can slide passes lower plunger tip plate, and described bolt head backstop is in the bottom surface of described lower plunger tip plate, and described screw rod is fixedly located in lower core box;
Suspension rod locking nut, one end adaptation that itself and described screw rod stretch out lower core box is spirally connected; And,
Back-moving spring, is located on the screw rod of described suspension rod, the bottom surface butt of the upper end of described back-moving spring and described lower core box, the end face butt of lower end and described lower plunger tip plate.
2. lower plunger tip plate lifting resetting means according to claim 1, is characterized in that, described screw rod comprises: near the polished rod section of bolt head and be positioned at the external thread section of this polished rod section outer end.
3. lower plunger tip plate lifting resetting means according to claim 1, is characterized in that, this lower plunger tip plate lifting resetting means also comprises: suspension rod locking cap, one end adaptation that this suspension rod locking cap and described screw rod stretch out suspension rod locking nut is spirally connected.
4. according to the lower plunger tip plate lifting resetting means described in any one in claims 1 to 3, it is characterized in that, this lower plunger tip plate lifting resetting means also comprises: dust ring cover plate and dust ring, described dust ring is laid in the dust ring installing hole of described lower plunger tip plate, and described dust ring cover plate is pushed down dust ring and is arranged on lower plunger tip plate.
5. lower plunger tip plate lifting resetting means according to claim 4, is characterized in that, the upper/lower terminal of described suspension rod is equipped with inner hexagonal hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420162154.6U CN203737957U (en) | 2014-04-02 | 2014-04-02 | Hoisting and resetting device for lower ejector core plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420162154.6U CN203737957U (en) | 2014-04-02 | 2014-04-02 | Hoisting and resetting device for lower ejector core plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203737957U true CN203737957U (en) | 2014-07-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420162154.6U Expired - Fee Related CN203737957U (en) | 2014-04-02 | 2014-04-02 | Hoisting and resetting device for lower ejector core plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203737957U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103862002A (en) * | 2014-04-02 | 2014-06-18 | 广西玉柴机器股份有限公司 | Lifting and returning device of lower ejecting core plate |
-
2014
- 2014-04-02 CN CN201420162154.6U patent/CN203737957U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103862002A (en) * | 2014-04-02 | 2014-06-18 | 广西玉柴机器股份有限公司 | Lifting and returning device of lower ejecting core plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20190402 |
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| CF01 | Termination of patent right due to non-payment of annual fee |