CN102689382B - Internal thread forming mechanism - Google Patents
Internal thread forming mechanism Download PDFInfo
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- CN102689382B CN102689382B CN201110069635.3A CN201110069635A CN102689382B CN 102689382 B CN102689382 B CN 102689382B CN 201110069635 A CN201110069635 A CN 201110069635A CN 102689382 B CN102689382 B CN 102689382B
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- strut
- valve
- claw
- mould assembly
- assembly core
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Abstract
The present invention provides a kind of internal thread forming mechanism, applied in a plastic mould, it is characterized in that, the internal thread forming mechanism includes: a valve mould assembly core, it is fixedly arranged on the liftout plate of the mold, the upper end is equipped with several valve type helicitic textures, and when not stressing external force, the valve type helicitic texture of the valve mould assembly core is to contract；One claw strut, it can be set to the valve mould assembly in-core up and downly, between each valve type helicitic texture that the claw structure is sticked into the valve mould assembly core in molding by the claw strut, the claw structure and the valve type helicitic texture cooperate the internal structure for participating in shaped article jointly；One strut pedestal, lower end are fixedly arranged on the bottom plate of the mold, and the liftout plate that the upper end passes through the mold is inserted into the valve mould assembly core, and the lower end of the claw strut is inserted into the strut pedestal and is fixedly connected.Compared to the prior art, internal thread forming mechanism structure of the present invention is simple, and processing and assembly are easy, and cost is relatively low, and molding cycle is shorter.
Description
[technical field]
The present invention relates to a kind of internal thread forming mechanism, in particular to the simple valve type forming internal threads of a kind of plastic mould
Mechanism.
[background technique]
When plastic cement products are with internal thread structure, such as cosmetics shell product, auto parts class product, internal screw thread
Structure needs plastic mould to form.The prior art generallys use screw gear core-pulling mechanism for internal thread structure to form.But
It is that screw gear core-pulling mechanism makes that mould structure is more complicated, cost is excessively high, mold is easily damaged.
Referring to Fig. 1, it is painted a plastic cement products 10 with common closed internal thread structure, with closed interior
Screw thread 11.
Please refer to figs. 2 and 3, be painted respectively existing internal thread forming mechanism side schematic view and existing internal screw thread at
The another side schematic diagram of type mechanism, the internal thread forming mechanism are applied in mold, for producing the product 10 comprising:
Four screw rods enter son 20, which enters sub 20 one end and be equipped with the internal screw thread that screw thread 21 participates in shaped article, the screw rod
The lower end for entering son is equipped with gear 22 and hydrostatic bearing 23；
One spring 30, setting are connected between the male template 200 of the mold and male model board 300；
One drive screw 40 is set to above-mentioned screw rod and enters among son 20, which is equipped with a driving cog
On wheel 41, the above-mentioned screw rod of the tooth engagement of the transmission gear 41 enters the tooth of the gear 22 of son, and lower end is additionally provided with a drive plate 42；
The shaft of one motor 50, the motor 50 is connected by a belt 51 with the drive plate 42 of the drive screw 40.
When die sinking, which rotates and drives the drive screw 40 rotation by the belt 51, and the drive screw 40 is again
It drives the screw rod to enter 20 rotation of son by the transmission gear 41 and exits the product 10 downwards.The effect of the spring 30 is when the spiral shell
When bar enters 20 rotation of son and exits the product 10 downwards, it separate the male template 200 wouldn't with the caster 100, to make this
Product 10 is fixed, and the male template 200 is first separated with the male model board 300.The screw rod enters son 20 and exits the product completely
After 10, which just separates with the caster 100, to take out product.
Existing inner threaded core-pulling mechanism structure is complicated, cost is excessively high and gear train is easily damaged.
[summary of the invention]
In view of the above problems, the purpose of the present invention is to provide a kind of structures simply, cost is relatively low and non-damageable interior
Thread forming mechanism.
In order to achieve the above object, the present invention provides a kind of internal thread forming mechanism, is applied in a plastic mould, special
Sign is that the internal thread forming mechanism includes:
One valve mould assembly core, is hollow cylindrical body, and lower end is fixedly arranged on the liftout plate of the mold, and the upper end is equipped with several
Valve type helicitic texture, the vertical sliding slot of a upper end opening is provided between every two valve type helicitic texture, and the vertical sliding slot is downward
The lower half portion of the valve mould assembly core is extended to, which is provided with an avoiding hollow groove in the lower end of valve type helicitic texture, not
When stress external force, the valve type helicitic texture of the valve mould assembly core upper end is to contract；
One claw strut, main body can be set to the valve mould assembly core inner up and downly, and the upper end is provided with several cards
Pawl structure, the claw structure can be set to up and downly in the vertical sliding slot of the valve mould assembly core, and the claw strut is in molding
The claw structure is sticked between each valve type helicitic texture of the valve mould assembly core, the claw structure and the valve type helicitic texture are common
Cooperation participates in the internal structure of shaped article；
One strut pedestal, lower end are fixedly arranged on the bottom plate of the mold, and the liftout plate that the upper end passes through the mold is inserted
Enter the valve mould assembly core, the lower end of the claw strut is inserted into the strut pedestal and is fixedly connected.
Preferably, the upper end of the valve mould assembly core is set there are four valve type helicitic texture.
Preferably, the width of the avoiding hollow groove on the vertical sliding slot of the valve mould assembly core is greater than the card of the claw strut upper end
The width of pawl structure.
Preferably, the lower end of the valve mould assembly core is equipped with a step surface, for preventing the valve mould assembly core from rotating.
Preferably, which is inserted into the strut pedestal and is fixedly connected by pin with the strut pedestal.
Preferably, the lower end of the strut pedestal is equipped with a step surface, for preventing the strut pedestal from rotating.
Compared to the prior art, using the mold of internal thread forming mechanism of the present invention, the interior spiral shell of plastic cement products produced
Line structure is valve type compartment internal screw thread, and compared with common closed internal thread structure, the service performance of product does not have difference, energy
Enough meet product requirement, and internal thread forming mechanism structure of the present invention is simple, processing and assembly are easy, and cost is relatively low, molding
Stablize, molding cycle is shorter.
[Detailed description of the invention]
Fig. 1 is the schematic diagram of a plastic cement products with common closed internal screw thread
Fig. 2 is the side schematic view of existing internal thread forming mechanism.
Fig. 3 is the another side schematic diagram of existing internal thread forming mechanism.
Fig. 4 is the schematic diagram of the plastic cement products with valve type compartment internal screw thread
Fig. 5 is status diagram of the internal thread forming mechanism of the present invention when molding.
Fig. 6 is status diagram of the internal thread forming mechanism of the present invention when die sinking.
Fig. 7 is the decomposition diagram of internal thread forming mechanism of the present invention.
[specific embodiment]
Better embodiment of the invention is described in further detail below with attached drawing.
Referring to FIG. 4, it is painted the plastic cement products 60 with valve type compartment internal screw thread, there are four valve type screw threads for tool
61 are evenly spaced on the inner wall in the product, and the discontinuity surface 62 of a non-threaded configurations is equipped between every two valve type screw thread.
Fig. 5 to Fig. 7 is please referred to, the present invention provides a kind of internal thread forming mechanism, is applied in a plastic mould, for giving birth to
The product 60 is produced, which includes a valve mould assembly core 70, a claw strut 80 and a strut pedestal 90.
The valve mould assembly core 70 is fixedly arranged on the upper ejector plate 3000 and lower liftout plate 4000 of the mold, there are four the upper end is set
Valve type helicitic texture 71, for forming the valve type screw thread 61 of the product 60.One is respectively arranged between the valve type helicitic texture 71
Vertical sliding slot 72 extends to the lower half portion of the valve mould assembly core 70, and the middle part of the vertical sliding slot 72 is provided with a width greater than the cunning
The avoiding hollow groove 73 of slot 72.When not by external force, the valve type helicitic texture 71 of the valve mould assembly core 70 is shunk centainly radially inward
Distance.The lower end of the valve mould assembly core 70 is additionally provided with a rotation stop step surface 74, prevents 70 rotation in open mold of valve mould assembly core.
The claw strut 80 can be set to up and downly in the valve mould assembly core 70, and there are four claw structures for the upper end setting
81, the main body of the claw structure 81 can be set to up and downly in the vertical sliding slot 72 of the valve mould assembly core 70, the claw strut
80 move upwards the empty avoiding between each valve type helicitic texture 71 that the claw structure 81 is sticked into the valve mould assembly core 70 in molding
Space, the surface of the claw structure 81 participate in forming discontinuity surface 62 and other non-threaded parts of the 60 inside nothing of product.It should
90 lower end of strut pedestal is fixedly arranged on the bottom plate 5000 of the mold, and the upper end passes through the upper ejector plate 3000 of the mold under
Liftout plate 4000 is simultaneously inserted into the valve mould assembly core 70, and the upper end is connect with the claw strut 80.The lower end of the strut pedestal 90 is also set
It is equipped with a rotation stop step surface 91, prevents the rotation in open mold of strut pedestal 90.
The lower end of the claw strut 80 is additionally provided with a pin hole 82, in the pin of the corresponding claw strut 80 on the strut pedestal 90
The position in hole 82 also is provided with a pin hole 92, and the lower end of the claw strut 80 is inserted into the strut pedestal 90, the claw strut 80 with
The strut pedestal 90 is fixedly connected by a pin.
When molding, the claw structure 81 of the claw strut 80 cooperates the valve type helicitic texture 71 of the valve mould assembly core 70 to join jointly
With the internal structure for forming the product 60.
When die sinking, the caster 1000 and male template 2000 are separated, the upper ejector plate 3000 and the lower liftout plate 4000 to
Upper movement, drives the valve mould assembly core 70 to eject upwards, which can not be transported due to the restriction effect by strut pedestal 90
Dynamic, which moves downward relative to the valve mould assembly core 70, and the claw structure 81 of the upper end is respectively along the valve mould assembly core
70 vertical sliding slot slides down in the avoiding hollow groove 72.Four valve type helicitic textures 71 of the valve mould assembly core 70 are radially at this time
To contract, the valve type screw thread 61 of the product 60 is exited completely, and product takes out.
When molding again, the upper ejector plate 3000 and the lower liftout plate 4000 move downward reset, drive the valve mould assembly core
70 reset downwards, which moves upwards relative to the valve mould assembly core 70, and edge should respectively for the claw structure 81 of the upper end
The vertical sliding slot 72 of valve mould assembly core 70 moves upwards, and four valve type helicitic textures 71 of the valve mould assembly core 70 are radially expanded
, the interval location between the valve type helicitic texture 71 that the claw structure 81 reaches the valve mould assembly core 70, the claw structure
81 match the internal structure of the synthesis type product 60 with the valve type helicitic texture 71.
Compared to the prior art, using the mold of internal thread forming mechanism of the present invention, the interior spiral shell of plastic cement products produced
Line structure is valve type compartment internal screw thread, and compared with common closed internal thread structure, the service performance of product does not have difference, energy
Enough meet product requirement, and internal thread forming mechanism structure of the present invention is simple, processing and assembly are easy, and cost is relatively low, molding
Stablize, molding cycle is shorter.
It is noted that the present invention is not limited to the above embodiments, any person skilled in the art is based on this hair
Bright technical solution both falls within protection model of the invention to any simple modification, equivalent change and modification made by above-described embodiment
In enclosing.
Claims (5)
1. a kind of internal thread forming mechanism, it is applied in a plastic mould, which is characterized in that the internal thread forming mechanism includes:
One valve mould assembly core, is hollow cylindrical body, and lower end is fixedly arranged on the liftout plate of the mold, and the upper end is equipped with several valve types
Helicitic texture, the vertical sliding slot of a upper end opening is provided between every two valve type helicitic texture, which extends downwardly
To the lower half portion of the valve mould assembly core, which is provided with an avoiding hollow groove in the lower end of valve type helicitic texture, is not stressing
When external force, the valve type helicitic texture of the valve mould assembly core upper end is to contract；
One claw strut, main body can be set to the valve mould assembly core inner up and downly, and the upper end is provided with several claw knots
Structure, the claw structure can be set to up and downly in the vertical sliding slot of the valve mould assembly core, which should in molding
Claw structure sticks between each valve type helicitic texture of the valve mould assembly core, which cooperates jointly with the valve type helicitic texture
The internal structure of shaped article is participated in, the width of the avoiding hollow groove of the valve mould assembly core is greater than the claw structure of the claw strut upper end
Width；
One strut pedestal, lower end are fixedly arranged on the bottom plate of the mold, and the liftout plate insertion that the upper end passes through the mold should
Valve mould assembly core, the lower end of the claw strut are inserted into the strut pedestal and are fixedly connected；
The lower end of the claw strut is additionally provided with a pin hole, also sets on the strut pedestal in the position of the pin hole of the corresponding claw strut
There is a pin hole, the lower end of the claw strut is inserted into the strut pedestal, and the claw strut and the strut pedestal are solid by a pin
Fixed connection.
2. internal thread forming mechanism according to claim 1, which is characterized in that the upper end of the valve mould assembly core is set there are four valve type
Helicitic texture.
3. internal thread forming mechanism according to claim 1, which is characterized in that the lower end of the valve mould assembly core is equipped with a rotation stop platform
Terrace, for preventing the valve mould assembly core from rotating.
4. internal thread forming mechanism according to claim 1, which is characterized in that the strut pedestal is inserted into the claw strut lower end
And it is fixedly connected by pin with the strut pedestal.
5. internal thread forming mechanism according to claim 1, which is characterized in that the lower end of the strut pedestal is equipped with a rotation stop
Step surface, for preventing the strut pedestal from rotating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110069635.3A CN102689382B (en) | 2011-03-23 | 2011-03-23 | Internal thread forming mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110069635.3A CN102689382B (en) | 2011-03-23 | 2011-03-23 | Internal thread forming mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102689382A CN102689382A (en) | 2012-09-26 |
| CN102689382B true CN102689382B (en) | 2019-01-15 |
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ID=46855194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110069635.3A Active CN102689382B (en) | 2011-03-23 | 2011-03-23 | Internal thread forming mechanism |
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| CN (1) | CN102689382B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106003610A (en) * | 2016-07-14 | 2016-10-12 | 福州大学 | Ingenious demolding internal thread mold device and using method thereof |
| CN108890987A (en) * | 2018-08-30 | 2018-11-27 | 昆山盛鸿达精密模具有限公司 | Multidigit synchronizes the efficient molding die of revolving type abnormity nut |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1785649A (en) * | 2005-12-12 | 2006-06-14 | 天津理工大学 | Contracting internal core withdrawing device used for plastic mould and its use method |
| CN101508161A (en) * | 2009-04-03 | 2009-08-19 | 宁海县德科模塑有限公司 | Screw driven radiation type core-loosing stripper |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201198183Y (en) * | 2008-04-09 | 2009-02-25 | 东江科技(深圳)有限公司 | Multi-stage loose core mechanism for plastic mould |
| CN101733875A (en) * | 2008-11-21 | 2010-06-16 | 汉达精密电子(昆山)有限公司 | Mould structure |
| CN101695859B (en) * | 2009-10-14 | 2012-07-18 | 唯科(厦门)精密塑胶模具有限公司 | Front mold internal full-closed core-pulling mechanism |
| CN202071260U (en) * | 2011-03-23 | 2011-12-14 | 汉达精密电子(昆山)有限公司 | Internal thread forming mechanism |
-
2011
- 2011-03-23 CN CN201110069635.3A patent/CN102689382B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1785649A (en) * | 2005-12-12 | 2006-06-14 | 天津理工大学 | Contracting internal core withdrawing device used for plastic mould and its use method |
| CN101508161A (en) * | 2009-04-03 | 2009-08-19 | 宁海县德科模塑有限公司 | Screw driven radiation type core-loosing stripper |
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| Publication number | Publication date |
|---|---|
| CN102689382A (en) | 2012-09-26 |
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