CN201291546Y - Mechanism for improving service lifetime of small-sized core of injection mold - Google Patents
Mechanism for improving service lifetime of small-sized core of injection mold Download PDFInfo
- Publication number
- CN201291546Y CN201291546Y CNU200820152022XU CN200820152022U CN201291546Y CN 201291546 Y CN201291546 Y CN 201291546Y CN U200820152022X U CNU200820152022X U CN U200820152022XU CN 200820152022 U CN200820152022 U CN 200820152022U CN 201291546 Y CN201291546 Y CN 201291546Y
- Authority
- CN
- China
- Prior art keywords
- core
- mould core
- disk spring
- small
- fixing plate
- 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 - Lifetime
Links
Images
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a mechanism for improving the service life of an injection mould small-sized core, comprising a fixed mould core fixing plate; a fixed mould core packing plate is arranged above the fixed mould core fixing plate by a bolt, a movable mould core is arranged in a movable mould core fixing plate, and a movable mould core packing plate is arranged below the movable mould core fixing plate by the bolt; the mechanism is characterized in that: a disk spring is arranged in a counter bore of the movable mould core packing plate, and a movable packing block is arranged between the mould core and the disk spring. The mechanism has the advantages that: the structure is simple and effective, the elasticity is adjusted by the combination of the disk springs with different number and adjusting the pre-pressing amount of the disk spring conveniently, thereby improving the service life of the mould core.
Description
Technical field
The utility model relates to a kind of small-sized core of injection mold mechanism in service life of improving, and is used for the little core of the mould of accurate plastic product, belongs to the injection mold technical field.
Background technology
Present also precise treatment more and more of the plastic part that uses of electronic product, this class plastic part has very little hole sometimes, the dimensional requirement height in hole, and overlap requires also very high around the aperture, in 0.03MM, the structure of conventional mould is made up of core 1, bolt 2, cover half core fixing plate 3, dynamic mould core fixed head 4, cover half core plate 5, dynamic mould core backing plate 6 and bolt 7 as shown in Figure 1.In order to control overlap around the aperture, the short transverse of core 1 will be got certain magnitude of interference, guarantees that the part that crashes with it behind the matched moulds fits tightly.Such result is: core 1 as adopt the high rigid material of high rigidity is severed by the part that crashes with it during matched moulds in the injection moulding production process easily; And if the material hardness rigidity of core 1 is not high enough, on the top around corner angle collide impaired easily because of the mold insert that crashes with it, and strain also takes place, these all unfavorable injection moulding productions in moulding section under the injection pressure effect.
Summary of the invention
The purpose of this utility model provides a kind of quality that satisfies injecting products, reduces the mechanism in the small-sized core of raising injection mold service life of mould maintenance cost.
For realizing above purpose, the technical solution of the utility model provides a kind of small-sized core of injection mold mechanism in service life of improving, and comprises the cover half core fixing plate, is provided with the cover half core plate by bolt above the cover half core fixing plate.Be provided with in the dynamic mould core fixed head can be movable core, dynamic mould core fixed head below is provided with the dynamic mould core backing plate by bolt, it is characterized in that, be provided with disk spring in dynamic mould core backing plate counterbore, being provided with between core and disk spring can movable cushion block.
The utility model is placed disk spring in the core bottom, utilize small-sized, powerful disk spring compression back to produce, be higher than the suffered injection pressure of core vertical direction, by the elastic force that is higher than the suffered injection pressure of core core can be fitted with the part that it crashes is powerful, product can not produce overlap during injection moulding crossed, and can not cause the core fracture because of rigid collision again.
Advantage of the present invention is: simple in structure effective; Can adjust elastic force by the disk spring combination of varying number and the precompressed amount of adjusting disk spring easily; Improve the service life of core.
Description of drawings
Fig. 1 is the structural representation of conventional mould;
Fig. 2 is for improving the small-sized core of the injection mold mechanism structure schematic diagram in service life;
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
As shown in Figure 2, for improving the small-sized core of the injection mold mechanism structure schematic diagram in service life; A kind of mechanism of improving the small-sized core of injection mold service life is made up of core 1, bolt 2, cover half core fixing plate 3, dynamic mould core fixed head 4, cover half core plate 5, dynamic mould core backing plate 6, bolt 7 disk springs 8 and cushion block 9.
Above cover half core fixing plate 3, cover half core plate 5 is installed by bolt 7.Be provided with mobilizable core 1 in the dynamic mould core fixed head 4, the height tolerance of core 1 is got plus tolerance+0.01～+ 0.02, guarantee that core 1 top can fully be subjected to the extruding of cover half behind matched moulds, the projected area of core 1 vertical direction is as far as possible little, make the injection pressure that is subjected on core 1 vertical direction as far as possible little, thereby make will lacking that the elastic force of disk spring is cancelled that core 1 material stiffness hardness is wanted high (HRC54-58).Dynamic mould core fixed head 4 belows are equipped with dynamic mould core backing plate 6 by bolt 2, in dynamic mould core backing plate 6 counterbores, be provided with disk spring 8, cushion block 9 is installed between core 1 and disk spring 8, by bolt 2 dynamic mould core fixed head 4 and dynamic mould core backing plate 6 fixing after, disk spring 8 must have certain precompressed amount, can regulate the precompressed amount by selecting cushion block 9 different thickness, and the disk spring combination of passing through varying number, produce necessary elastic force, the size of elastic force is according to being subjected to such an extent that the geomery of injection pressure and core 1 is selected in the die cavity.
In injection moulding process, after the mould closes, core 1 is subjected to must pushing surface parts, because its end is mobilizable cushion block 9 and disk spring 8, can produces trace and move, and so just can not produce rigid collision, has reduced the probability of fracture.The elastic force of disk spring 8 generations simultaneously, a part is used for overcoming the injection pressure that core 1 is subjected to, and remaining imposes on core 1, and core 1 is fitted with the part on opposite is powerful, avoids overlap to produce.
Claims (2)
1. one kind is improved the small-sized core of the injection mold mechanism in service life, comprise cover half core fixing plate (3), be provided with cover half core plate (5) in cover half core fixing plate (3) top by bolt (2), be provided with mobilizable core (1) in the dynamic mould core fixed head (4), dynamic mould core fixed head (4) below is provided with dynamic mould core backing plate (6), it is characterized in that, in dynamic mould core backing plate (6) counterbore, be provided with disk spring (8), between core (1) and disk spring (8), be provided with mobilizable cushion block (9).
2. a kind of small-sized core of injection mold mechanism in service life of improving as claimed in claim 1 is characterized in that the height tolerance of described core (1) is got plus tolerance+0.01～+ 0.02.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820152022XU CN201291546Y (en) | 2008-08-15 | 2008-08-15 | Mechanism for improving service lifetime of small-sized core of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820152022XU CN201291546Y (en) | 2008-08-15 | 2008-08-15 | Mechanism for improving service lifetime of small-sized core of injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201291546Y true CN201291546Y (en) | 2009-08-19 |
Family
ID=41005004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820152022XU Expired - Lifetime CN201291546Y (en) | 2008-08-15 | 2008-08-15 | Mechanism for improving service lifetime of small-sized core of injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201291546Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107877788A (en) * | 2017-12-15 | 2018-04-06 | 太仓佳锐精密模具有限公司 | A kind of adjustable mould of core |
| CN110293687A (en) * | 2019-06-05 | 2019-10-01 | 大连理工大学 | A kind of more menifold plate bonding methods of polyetherimide |
-
2008
- 2008-08-15 CN CNU200820152022XU patent/CN201291546Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107877788A (en) * | 2017-12-15 | 2018-04-06 | 太仓佳锐精密模具有限公司 | A kind of adjustable mould of core |
| CN110293687A (en) * | 2019-06-05 | 2019-10-01 | 大连理工大学 | A kind of more menifold plate bonding methods of polyetherimide |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202344783U (en) | Forcible demolding mechanism for injection mold | |
| CN103878228A (en) | Flexible multi-point forming device for plates | |
| CN101733867A (en) | Positioning mechanism of floating pin type in-mode inserts | |
| TW200737241A (en) | Process for producing radially anisotropic magnet | |
| CN201291546Y (en) | Mechanism for improving service lifetime of small-sized core of injection mold | |
| CN101837409A (en) | Rigid and flexible combined forming die based on solid particle medium | |
| CN201442051U (en) | Steel back convex-concave combined mold | |
| CN105599235A (en) | Backlash compensation structure of vehicle glass injection molding die | |
| CN202270882U (en) | Punching and material-returning mechanism | |
| CN102615265B (en) | Ejection mechanism of fixed die push plate | |
| CN102172732B (en) | Progressive die rounding and core-pulling mechanism | |
| CN203076463U (en) | Elastic movable member resetting time controlling device | |
| CN102962449A (en) | Magnetic material powder forming device and method | |
| CN201720426U (en) | Molding device of neodymium iron boron material | |
| CN202571243U (en) | Push plate ejection mechanism for fixed die | |
| CN201279856Y (en) | Floating pin type in-mold mold insert positioning device | |
| CN201161267Y (en) | Semimanufactures mould for solid plate | |
| CN106001251A (en) | Stamping mould | |
| CN201744656U (en) | Die compacting apparatus of powder compacting and forming machine | |
| CN202207798U (en) | Neodymium iron boron material moulding apparatus | |
| CN201913729U (en) | Rubber floor block material mold with adjustable thickness | |
| CN221195597U (en) | Hydraulic actuating cylinder piston built-in buffer device | |
| CN111136262A (en) | Forming die for magnetic material and pressing method thereof | |
| CN218803783U (en) | Spring-assisted ejection mechanism | |
| CN220464607U (en) | Novel injection mold capable of preventing thick glue position of injection molding product from shrinking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090819 |