CN203994354U - A kind of guidance type die ejector pin - Google Patents
A kind of guidance type die ejector pin Download PDFInfo
- Publication number
- CN203994354U CN203994354U CN201420296612.5U CN201420296612U CN203994354U CN 203994354 U CN203994354 U CN 203994354U CN 201420296612 U CN201420296612 U CN 201420296612U CN 203994354 U CN203994354 U CN 203994354U
- Authority
- CN
- China
- Prior art keywords
- push rod
- ejector pin
- countersunk head
- die ejector
- thimble
- 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
Links
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model relates to a kind of guidance type die ejector pin, comprises countersunk head and push rod, and countersunk head and push rod coaxially arrange, and push rod one, built in the lower surface of countersunk head, is characterized in that: the cross sectional shape of described push rod is axially symmetrical arcuation.The push rod of this die ejector pin is made the jatharapanvartanasana of axial symmetry, not only improved thus the intensity of whole push rod, while also carries out by the push rod of jatharapanvartanasana the guiding that precision is higher, overcome the deflection problem of push rod, make push rod steady when ejecting, vertical, strong simultaneously, avoid the distortion of push rod, improved the depanning precision of product.
Description
Technical field
The utility model belongs to mould applications, relates to the thimble of mold parts, especially a kind of guidance type die ejector pin.
Background technology
Die ejector pin is the instrument for the product after mold moulding is separated on mould, is conventionally axially arranged on patrix or counterdie, and the row's of employing pin mode.Die ejector pin is made by the countersunk head of integral production and coaxial push rod, and countersunk head and push rod are cylindrical, and the upper end of countersunk head and the lower end of push rod are planar design.When needs are in mould during ejecting product, countersunk head pressurized also promotes push rod and stretches out, and the end face of push rod produces ejecting force to product, thus product is ejected.At present, countersunk head and push rod are the integrally formed structure of unified material, and bulk strength is general; Especially for the higher product of product depanning precision, need die ejector pin to eject very meticulous, there are not any swing and impact, and the push rod of existing thimble is cylindrical, before the pilot hole of itself and mould, gap is larger, unavoidably there is rotation and skew, affected the depanning quality of product.
For existing die ejector pin situation, by retrieval, find following relevant patent document:
1, a kind of modified form ejector pin structure of die CN203409934U, comprise thimble body, described thimble body upper surface is provided with a plurality of grooves, in described groove, be provided with elastic component, upper surface at thimble body is evenly coated with wear-resisting electrostatic layer simultaneously, the utility model buffering and good antiskid effect, in the service life of improving thimble, can effectively eliminate electrostatic phenomenon simultaneously.
2, a kind of die ejector pin (CN103395145A), comprise thimble the first shell of column, thimble the second shell of column, thimble the 3rd shell of column, described thimble first shell of column one end is provided with round platform, the other end is connected with thimble the second shell of column, described thimble the second shell of column is connected with thimble the 3rd shell of column, between wherein said thimble the first shell of column and thimble the second shell of column, be provided with transition and connect round platform I, between described thimble the second shell of column and thimble the first shell of column, be provided with transition and connect round platform II.The thimble shell of column that the present invention is reduced successively by three sections of diameters connects to form, reduced the contact area of thimble and installing hole, and by centre bore and bilateral symmetry notch are set on the connection round platform in thimble one end, guarantee that thimble installation is fixing reliable, thimble long service life, easy to use, moulded products effectively can be ejected from mould.
By technical characterictic, contrast, above-mentioned two pieces of patent documents are not identical with the utility model application, and have equally the problems referred to above.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part, provides a kind of and guarantees that die ejector pin intensity is large, product ejects the guidance type die ejector pin that precision is high.
The technical solution of the utility model is:
A guidance type die ejector pin, comprises countersunk head and push rod, and countersunk head and push rod coaxially arrange, and push rod one, built in the lower surface of countersunk head, is characterized in that: the cross sectional shape of described push rod is axially symmetrical arcuation.
And the cross sectional shape of described push rod is the arcuation of symmetrical pointed two ends, middle part arc, or it is the arcuation of symmetrical rectangle two ends, middle part arc.
Advantage of the present utility model and good effect are:
The push rod of this die ejector pin is made the jatharapanvartanasana of axial symmetry, not only improved thus the intensity of whole push rod, while also carries out by the push rod of jatharapanvartanasana the guiding that precision is higher, overcome the deflection problem of push rod, make push rod steady when ejecting, vertical, strong simultaneously, avoid the distortion of push rod, improved the depanning precision of product.
Accompanying drawing explanation
Fig. 1 is structural front view of the present utility model;
Fig. 2 is the upward view of Fig. 1;
Fig. 3 is the structural representation that the push rod of Fig. 2 is pointed cambered surface;
Fig. 4 is the structural representation that the push rod of Fig. 2 is square cambered surface.
The specific embodiment
Below by specific embodiment, the utility model is described in further detail, and following examples are descriptive, is not determinate, can not limit protection domain of the present utility model with this.
A guidance type die ejector pin, comprises countersunk head 1 and push rod 2, and countersunk head and push rod coaxially arrange, and push rod one is built in the lower surface of countersunk head.
Innovative point of the present utility model is:
The cross sectional shape of described push rod is axially symmetrical arcuation, as shown in Figure 2; The cross sectional shape of push rod is necessary for symmetrical arcuation, thus can be when leading operation, and the center that its center of gravity is push rod.
The cross sectional shape of described push rod is the arcuation of symmetrical pointed two ends, middle part arc, as shown in Figure 3.
The cross sectional shape of described push rod is the arcuation of symmetrical rectangle two ends, middle part arc, as shown in Figure 4.
Claims (2)
1. a guidance type die ejector pin, comprises countersunk head and push rod, and countersunk head and push rod coaxially arrange, and push rod one, built in the lower surface of countersunk head, is characterized in that: the cross sectional shape of described push rod is axially symmetrical arcuation.
2. guidance type die ejector pin according to claim 1, is characterized in that: the cross sectional shape of described push rod is the arcuation of symmetrical pointed two ends, middle part arc, or is the arcuation of symmetrical rectangle two ends, middle part arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420296612.5U CN203994354U (en) | 2014-06-06 | 2014-06-06 | A kind of guidance type die ejector pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420296612.5U CN203994354U (en) | 2014-06-06 | 2014-06-06 | A kind of guidance type die ejector pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203994354U true CN203994354U (en) | 2014-12-10 |
Family
ID=52034417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420296612.5U Expired - Fee Related CN203994354U (en) | 2014-06-06 | 2014-06-06 | A kind of guidance type die ejector pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203994354U (en) |
-
2014
- 2014-06-06 CN CN201420296612.5U patent/CN203994354U/en not_active Expired - Fee Related
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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: 20141210 Termination date: 20150606 |
|
| EXPY | Termination of patent right or utility model |