CN207327517U - A kind of thimble structure of injection mold - Google Patents
A kind of thimble structure of injection mold Download PDFInfo
- Publication number
- CN207327517U CN207327517U CN201721294052.XU CN201721294052U CN207327517U CN 207327517 U CN207327517 U CN 207327517U CN 201721294052 U CN201721294052 U CN 201721294052U CN 207327517 U CN207327517 U CN 207327517U
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- CN
- China
- Prior art keywords
- thimble
- circular cone
- mode
- injection mold
- bellmouth
- 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.)
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- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a kind of thimble structure of injection mold, including base, template and mode, ejector retainner plate is provided with the base, thimble is provided with the ejector retainner plate, it is characterised in that：The template and mode are provided through the relief hole passed through for ejector retainner plate, the end that the thimble is located in mode is coaxially arranged with circular cone, the circular cone includes upper bottom surface and bottom surface, the upper bottom surface is flushed with the surface of mode, the area of the upper bottom surface is more than the area of bottom surface, the relief hole inner wall is coaxially arranged with the profile bellmouth for receiving circular cone consistent with circular cone, its key points of the technical solution are that after thimble reset, circular cone and bellmouth can be 0 between coordinating, effectively prevent in injection moulding process, melting material is flowed into mounting hole.
Description
Technical field
Injection mold technology is the utility model is related to, more specifically, it relates to a kind of thimble knot of injection mold
Structure.
Background technology
Die ejector pin is to be used for molding product in ejection die, and traditional die ejector pin is the equal cylinder of an outside diameter
Body mandril, cylindrical, top shank are equipped with cylindrical thimble countersunk head, and the die ejector pin of this structure installs mounting hole in a mold
Interior, when needing to eject moulded products, the thimble rod of die ejector pin is stretched out out of mounting hole, and product is ejected.
The patent of existing Application No. 201310332377.2 discloses a kind of die ejector pin, including the first thimble rod and
Two thimble rods, the diameter of the second thimble rod are more than the diameter of the first thimble rod, pass through between the first thimble rod and the second thimble rod
Elastic component connects, and the outer surface of the second thimble rod is equipped with composite bed, and by setting composite bed on the second thimble rod, increase is wear-resisting
Property.
But in actual use, since the first thimble rod is used at the cooperation of straight body bar and mode as clear opening
Form, fit clearance is generally in 0.02mm or so, when producing the extraordinary plastics of some mobility, such as TPU, and rubber, silica gel
Deng flowing into gap after the melting of, product, flash is easily produced, influences the yield of product.And prolonged friction can make fit clearance
Increase, product, which produces flash, to become larger, and after melting material enters gap, the first thimble rod can be caused to be killed with mode, mold failure
Rate raises.
Utility model content
A kind of in view of the deficienciess of the prior art, thimble knot the purpose of this utility model is to provide injection mold
Structure, has when producing the extraordinary plastic product of some mobility, flash will not be produced because of the fit clearance of part, and
Prolonged production frictional force also can very little, the characteristics of mold failure reduces.
To achieve the above object, the utility model provides following technical solution：
A kind of thimble structure of injection mold, including base, template and mode, are provided with ejector retainner plate on the base, institute
State and thimble is provided with ejector retainner plate, the template and mode are provided through the relief hole passed through for ejector retainner plate, the thimble position
Circular cone is coaxially arranged with the end in mode, the circular cone includes upper bottom surface and bottom surface, the upper bottom surface and mode
Surface flush, the area of the upper bottom surface is more than the area of bottom surface, and the relief hole inner wall is coaxially arranged with profile and cone
Shape block is unanimously for the bellmouth of receiving circular cone.
Preferably, the diameter of the bottom surface is more than the diameter of the thimble.
Preferably, the seamed edge that the bottom surface is bonded with bellmouth is circumferentially provided with rounded corner along it, in the bellmouth
The arc surface that wall is bonded with rounded corner.
Preferably, the fit clearance of the circular cone and the bellmouth is 0.
Preferably, the circular cone is detachably connected with the thimble.
Preferably, the bottom surface of institute's circular cone is provided with mounting hole, and the thimble top surface is provided with convex block, the convex block with
The mounting hole is threadedly coupled.
Due to the utilization of above-mentioned technical proposal, the present invention has following advantages compared with prior art：
By setting circular cone, when thimble resets, circular cone is to be subject to downward active force, circular cone outer wall and taper
Hole inner wall is fitted close, and fit clearance reaches 0, can effectively be prevented the plastics of flowing from entering in the gap of thimble and relief hole, be subtracted
Failure rate is lacked；The diameter of circular cone bottom surface is more than the diameter of thimble, further can obstruct melting material, prevents melting material along cone
Flowed into towards relief hole；Rounded corner can prevent that stress concentration is at seamed edge when circular cone from interacting with bellmouth, and lead
Cause cone block abrasion；Circular cone is detachably connected with thimble by screw thread, when needing to dismantle thimble, first can be torn circular cone open
Unload, easy to which thimble is extracted out out of relief hole.
Brief description of the drawings
Fig. 1 is the structure diagram of the present embodiment；
Fig. 2 is the enlarged drawing of part A in Fig. 1.
In figure：1st, base；11st, ejector retainner plate；2nd, template；3rd, mode；4th, thimble；41st, circular cone；411st, upper bottom surface；412、
Bottom surface；413rd, rounded corner；414th, mounting hole；42nd, convex block；5th, relief hole；51st, bellmouth.
Embodiment
The utility model is described in further detail below in conjunction with attached drawing.
The present embodiment is only explanation to the utility model, it is not the limitation to the utility model, this area skill
Art personnel as needed can make the present embodiment the modification of no creative contribution after this specification is read, but as long as
All protected in the right of the utility model be subject to Patent Law.
A kind of thimble structure of injection mold, with reference to Fig. 1 and 2, it includes base 1, template 2 and mode 3, is set on base 1
4 plate 11 of thimble is equipped with, thimble 4 is provided with 4 plate 11 of thimble, mode 3 and template 2 are provided through what is passed through for 4 plate 11 of thimble
Relief hole 5,4 plate 11 of thimble drive thimble 4 to move up and down under cylinder or hydraulic oil cylinder driving, complete ejection and reset operation.
The end that thimble 4 is located in mode 3 is coaxially arranged with circular cone 41, and circular cone 41 includes upper bottom surface 411 and bottom
Face 412, upper bottom surface 411 are flushed with the surface of mode 3, for being contacted with product；The area of upper bottom surface 411 is more than bottom surface 412
Area, 5 inner wall of relief hole is coaxially arranged with the profile bellmouth 51 consistent with circular cone 41, and bellmouth 51 is used to accommodate taper
Block 41, after circular cone 41 resets, circular cone 41 and the fit clearance of bellmouth 51 are 0, can effectively prevent melting material and flow into bellmouth
In 51.The diameter of bottom surface 412 is more than the diameter of thimble 4, further reduces melting material and flows downwardly into relief hole 5 along bellmouth 51
It is interior, to prevent thimble 4 to be stuck；Bottom surface 412 is circumferentially provided with rounded corner 413 with the seamed edge that bellmouth 51 is bonded along it, cone
The arc surface that 51 inner wall of shape hole is bonded with rounded corner 413, exists for reducing stress concentration after circular cone 41 coordinates with bellmouth 51
At seamed edge, prevent that the stress in ejection of circular cone 41 is excessive and is damaged.
Circular cone 41 is detachably connected with thimble 4, and the bottom surface 412 of circular cone 41 is provided with mounting hole 414, and thimble 4 pushes up
Face is provided with convex block 42, and convex block 42 is connected by screw thread with mounting hole 414, when replacing and safeguarding thimble 4, easy to by thimble 4
Take out.
Claims (6)
1. a kind of thimble structure of injection mold, including base, template and mode, ejector retainner plate is provided with the base, it is described
Thimble is provided with ejector retainner plate, it is characterised in that：The template and mode are provided through the relief hole passed through for ejector retainner plate, institute
State the end that thimble is located in mode and be coaxially arranged with circular cone, the circular cone includes upper bottom surface and bottom surface, the upper bottom
Face is flushed with the surface of mode, and the area of the upper bottom surface is more than the area of bottom surface, and the relief hole inner wall is coaxially arranged with
The profile bellmouth for receiving circular cone consistent with circular cone.
2. the thimble structure of injection mold according to claim 1, it is characterised in that：The diameter of the bottom surface is more than institute
State the diameter of thimble.
3. the thimble structure of injection mold according to claim 1, it is characterised in that：The bottom surface is bonded with bellmouth
Seamed edge be circumferentially provided with rounded corner, the arc surface that the bellmouth inner wall is bonded with rounded corner along it.
4. the thimble structure of injection mold according to claim 1, it is characterised in that：The circular cone and the bellmouth
Fit clearance be 0.
5. the thimble structure of injection mold according to claim 1, it is characterised in that：The circular cone can with the thimble
Dismantling connection.
6. the thimble structure of injection mold according to claim 1, it is characterised in that：The bottom surface of institute's circular cone is provided with
Mounting hole, the thimble top surface are provided with convex block, and the convex block is threadedly coupled with the mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721294052.XU CN207327517U (en) | 2017-10-09 | 2017-10-09 | A kind of thimble structure of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721294052.XU CN207327517U (en) | 2017-10-09 | 2017-10-09 | A kind of thimble structure of injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207327517U true CN207327517U (en) | 2018-05-08 |
Family
ID=62368160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721294052.XU Active CN207327517U (en) | 2017-10-09 | 2017-10-09 | A kind of thimble structure of injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207327517U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110450364A (en) * | 2019-09-02 | 2019-11-15 | 李杰鹏 | A kind of injection molded rear profile chamber ejecting mechanism |
-
2017
- 2017-10-09 CN CN201721294052.XU patent/CN207327517U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110450364A (en) * | 2019-09-02 | 2019-11-15 | 李杰鹏 | A kind of injection molded rear profile chamber ejecting mechanism |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215000 313 Fenyang Road, Lili Town, Wujiang District, Suzhou City, Jiangsu Province Patentee after: Suzhou Fuying New Material Co.,Ltd. Address before: 215000 313 Fenyang Road, Lili Town, Wujiang District, Suzhou City, Jiangsu Province Patentee before: SUZHOU YICHANGTAI PLASTIC Co.,Ltd. |