CN108262920A - The combinatory core and injection mold of moulding plastics gear - Google Patents
The combinatory core and injection mold of moulding plastics gear Download PDFInfo
- Publication number
- CN108262920A CN108262920A CN201810065284.0A CN201810065284A CN108262920A CN 108262920 A CN108262920 A CN 108262920A CN 201810065284 A CN201810065284 A CN 201810065284A CN 108262920 A CN108262920 A CN 108262920A
- Authority
- CN
- China
- Prior art keywords
- core
- combinatory
- plate
- locating piece
- flat mouth
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2015/00—Gear wheels or similar articles with grooves or projections, e.g. control knobs
- B29L2015/003—Gears
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention discloses a kind of combinatory core and injection mold of moulding plastics gear, combinatory core includes the first core, the second core, third core and the 4th core of coaxial arrangement, second core is located in the first core, third core is located at Second-Type in-core, and the 4th core is located in third core.First core and the second core are equipped with coaxial locating slot A, and the locating piece A for fixing the two cores is equipped in locating slot A, and third core side is equipped with flat mouth A, and one end of locating piece A is set in the flat mouth A.In small space, using the locating slot in core and locating piece, to four, coaxial core positions, and is not only convenient for the processing of core, the positioning accuracy of core is also guaranteed.
Description
Technical field
The invention belongs to injection mold technologies, are related to a kind of combinatory core and injection mould of moulding plastics gear
Tool, can be applied to the injection of stepped gear.
Background technology
High-precision plastic gear is that one kind is widely used in micromachine, electronic product, auto parts machinery, household electrical appliance, does
The plastic products of utility.Because function needs plastic gear to be typically designed as staged, and with gear hole, so for just
Combinatory core need to be used, and need accurately to position core in pocket machining.Traditional high-precision plastic teeth wheel model
Tool is using three template dies, and all employ combinatory core substantially.
For combinatory core and its positioning method, when producing high-precision plastic, it is easier using less core
It can lead to the processing difficulties of cavity when ensureing the overall precision of plastic, but using less core again, and be unfavorable for tieing up after wearing
Shield；And when using many types of core combination, higher to the positioning requirements of multiple cores, core positioning method is determined frequently with screw
Position, positioning finger setting or flat mouth positioning, but in small space, when being positioned to multiple cores, according to screw or
Finger setting is positioned, needs to set multiple screws or positioning pin, insufficient space；It is positioned according to flat mouth, to the ruler of multiple cores
Very little and relative position there are certain requirements again.
Invention content
The purpose of the present invention is to provide a kind of combinatory cores, and in small space, to four, coaxial core is determined
Position, is not only convenient for the processing of core, the positioning accuracy of core is also guaranteed.
To achieve these goals, its technical solution is that：
A kind of combinatory core, the first core, the second core, third core and the 4th core including coaxial arrangement, institute
It states the second core to be located in first core, the third core is located at the Second-Type in-core, and the 4th core is located at
In the third core.
In combinations of the above formula core, first core and second core are equipped with coaxial locating slot A, the positioning
The locating piece A of fixed first core and second core is equipped in slot A, the third core side is equipped with flat mouth A, institute
The one end for stating locating piece A is set in the flat mouth A.
In combinations of the above formula core, first core is used to be molded the top flank of tooth of stepped gear.
In combinations of the above formula core, second core is used to be molded the lower part flank of tooth of stepped gear.
In combinations of the above formula core, the third core is used to be molded the bottom surface of stepped gear.
In combinations of the above formula core, the 4th core is used to be molded the gear hole of stepped gear.
Another object of the present invention is to provide a kind of injection mold for including said combination formula core, fixed including core
Plate and the locating piece B being located in core on the core fixing plate, the core fixing plate are equipped with locating slot B, and described the
The side of one core is equipped with flat mouth B, and described locating piece B one end is set in the locating slot B, and the other end is set in the flat mouth B.
Compared with prior art, acquired technological progress is in small space patent of the present invention, using in core
Locating slot and locating piece to four, coaxial core positions, be not only convenient for the processing of core, the positioning accuracy of core is also
Guarantee is arrived.
Description of the drawings
Fig. 1 is the three-view diagram of combinatory core.
Fig. 2 is schematic diagram of the combinatory core on core fixing plate.
Fig. 3 is the structure chart for three board molds with combinatory core.
Fig. 4 is the enlarged drawing of core in Fig. 3.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
A kind of combinatory core is mainly used in the molding of high-precision plastic gear, such as stepped gear, including coaxially setting
The first core 16-1, the second core 16-2, third core 16-3 and the 4th core 16-4 put, the second core 16-2 are located at first
In core 16-1, third core 16-3 is located in the second core 16-2, and the 4th core 16-4 is located in third core 16-3.
First core 16-1 and the second core 16-2 is equipped with coaxial locating slot A, is equipped in locating slot A and fixes the first core
The locating piece A19-1 of 16-1 and the second core 16-2 make to lock between the first core 16-1 and the second core 16-2.Third core
16-3 sides are equipped with flat mouth A 20, and one end of locating piece A19-2 is set in flat mouth A20, and third core 16-3 is made also to lock fixed
In the slot A of position.
First core 16-1 is used to be molded the top flank of tooth of stepped gear.Second core 16-2 is used to be molded stepped gear
The lower part flank of tooth.Third core 16-3 is used to be molded the bottom surface of stepped gear.4th core 16-4 is used to be molded stepped gear
Gear hole.
As shown in figure 3, the combinatory core 16 of above-described embodiment can be applied in three template dies, which includes cover half bottom
Plate 1, solid plate 3, moving platen 4, double end controlled interval pull rod 5, backing plate 6, ejector retainner plate 7, Ejector Retainer Plate 8, locating ring 9, is determined intermediate plate 2
Mould sprue puller 10, puller plate 11, stripper plate 12, runner plate 13, fixed mold plate 14, movable model core plate 15, combinatory core
16th, core fixing plate 17 and moving clamping plate 18.Locating ring 9 is fixed on fixed clamping plate 1, and cover half sprue puller 10 is fixed on locating ring
On 9, double end controlled interval pull rod 5 connects intermediate plate 2 and is sleeved on fixed clamping plate 1, and guide post is fixed on fixed clamping plate 1, solid plate 3,
Moving platen 4 is respectively fitted on guide post, and runner plate 13 is fixed on solid plate 3, and fixed mold plate 14 is fixed on runner plate 13, is moved
Model core plate 15 is connect with core fixing plate 17, and combinatory core 16 is fixed on movable model core plate 15, and backing plate 6 is connected to dynamic
On baffle plate 18, and core fixing plate 17 is carry, ejector retainner plate 7 and 8 fixed thimble of Ejector Retainer Plate are placed in moving clamping plate 18
On.
Combinatory core 16 is located on core fixing plate 17 by locating piece B 19-2.Specifically, core fixing plate
17 are equipped with locating slot B 21, and the side of the first core 16-1 is equipped with flat mouth B, and locating piece B 19-2 one end is set on locating slot B 21
Interior, the other end is set in flat mouth B.
It during die sinking, is moved after dynamic model part, under the action of the spring, mold is opened between stripper plate and runner plate, fixed
Sprue puller on fixed clamping plate holds cold burden, its cold burden is made to be disconnected at spot pouring mouth, and cold burden is stayed in cover half one with product
Side.Dynamic model part is moved after continuing, and when reaching certain distance, solid plate is held in the rear end of double end controlled interval pull rod, and de- material is held in front end
Plate, while mold is opened between solid plate and moving platen, stripper plate is rear under the action of pull rod to be moved, and cold burden is released.It is dynamic
Template is moved after continuing, and the push rod of injection molding machine pushes ejector retainner plate, and thimble is by product from mold ejection.
Certain combinatory core 16 can also be applied in other molds, however it is not limited to three template die shown in Fig. 3.
Claims (7)
1. a kind of combinatory core, which is characterized in that the first core (16-1), the second core (16-2) including coaxial arrangement,
Third core (16-3) and the 4th core (16-4), second core (16-2) is in first core (16-1), institute
Third core (16-3) is stated in second core (16-2), the 4th core (16-4) is positioned at the third core
In (16-3).
2. combinatory core according to claim 1, which is characterized in that first core (16-1) and the Second-Type
For core (16-2) equipped with coaxial locating slot A, the locating slot A is interior to be equipped with fixed first core (16-1) and second core
The locating piece A (19-1) of (16-2), third core (16-3) side are equipped with flat mouth A (20), the locating piece A (19-2)
One end is set in the flat mouth A (20).
3. combinatory core according to claim 1 or 2, which is characterized in that first core (16-1) is for being molded
The top flank of tooth of stepped gear.
4. combinatory core according to claim 1 or 2, which is characterized in that second core (16-2) is for being molded
The lower part flank of tooth of stepped gear.
5. combinatory core according to claim 1 or 2, which is characterized in that the third core (16-3) is for being molded
The bottom surface of stepped gear.
6. combinatory core according to claim 1 or 2, which is characterized in that the 4th core (16-4) is for being molded
The gear hole of stepped gear.
7. a kind of injection mold for including combinatory core described in claims 1 or 2, which is characterized in that including core fixing plate
(17) and by core the locating piece B (19-2) being located on the core fixing plate (17) is set on the core fixing plate (17)
There is locating slot B (21), the side of first core (16-1) is equipped with flat mouth B, and described locating piece B (19-2) one end is set on described
In locating slot B (21), the other end is set in the flat mouth B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810065284.0A CN108262920A (en) | 2018-01-23 | 2018-01-23 | The combinatory core and injection mold of moulding plastics gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810065284.0A CN108262920A (en) | 2018-01-23 | 2018-01-23 | The combinatory core and injection mold of moulding plastics gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108262920A true CN108262920A (en) | 2018-07-10 |
Family
ID=62776397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810065284.0A Pending CN108262920A (en) | 2018-01-23 | 2018-01-23 | The combinatory core and injection mold of moulding plastics gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108262920A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5243887A (en) * | 1975-10-06 | 1977-04-06 | Matsuki Itaya | Method of making double helical gear of rubber |
| JPH0452204A (en) * | 1990-06-19 | 1992-02-20 | Mitsubishi Materials Corp | Production of gear and gear |
| JPH07124953A (en) * | 1993-11-02 | 1995-05-16 | Sanki Bussan Kk | Resin mold and its manufacture |
| KR20110026868A (en) * | 2009-09-09 | 2011-03-16 | 에이테크솔루션(주) | Gear ring that cooling line for direct cooling is formed and method makes this |
| CN102101350A (en) * | 2010-12-24 | 2011-06-22 | 宁波双林模具有限公司 | Precision mold for small-spiral-angle duplex gear |
| CN201913763U (en) * | 2010-12-24 | 2011-08-03 | 宁波双林模具有限公司 | Precision die for duplicate gears with small spiral angles |
| CN202367909U (en) * | 2011-11-24 | 2012-08-08 | 深圳市兆威机电有限公司 | Bevel gear die and resetting mechanism thereof |
| CN102672914A (en) * | 2012-05-21 | 2012-09-19 | 常州工学院 | Duplex helical gear injection molding stripping mechanism |
-
2018
- 2018-01-23 CN CN201810065284.0A patent/CN108262920A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5243887A (en) * | 1975-10-06 | 1977-04-06 | Matsuki Itaya | Method of making double helical gear of rubber |
| JPH0452204A (en) * | 1990-06-19 | 1992-02-20 | Mitsubishi Materials Corp | Production of gear and gear |
| JPH07124953A (en) * | 1993-11-02 | 1995-05-16 | Sanki Bussan Kk | Resin mold and its manufacture |
| KR20110026868A (en) * | 2009-09-09 | 2011-03-16 | 에이테크솔루션(주) | Gear ring that cooling line for direct cooling is formed and method makes this |
| CN102101350A (en) * | 2010-12-24 | 2011-06-22 | 宁波双林模具有限公司 | Precision mold for small-spiral-angle duplex gear |
| CN201913763U (en) * | 2010-12-24 | 2011-08-03 | 宁波双林模具有限公司 | Precision die for duplicate gears with small spiral angles |
| CN202367909U (en) * | 2011-11-24 | 2012-08-08 | 深圳市兆威机电有限公司 | Bevel gear die and resetting mechanism thereof |
| CN102672914A (en) * | 2012-05-21 | 2012-09-19 | 常州工学院 | Duplex helical gear injection molding stripping mechanism |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180710 |