CN203004202U - Injection moulding die for medical EVA (ethylene vinyl-acetate) outer bottle cap - Google Patents
Injection moulding die for medical EVA (ethylene vinyl-acetate) outer bottle cap Download PDFInfo
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- CN203004202U CN203004202U CN 201220626894 CN201220626894U CN203004202U CN 203004202 U CN203004202 U CN 203004202U CN 201220626894 CN201220626894 CN 201220626894 CN 201220626894 U CN201220626894 U CN 201220626894U CN 203004202 U CN203004202 U CN 203004202U
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Abstract
The utility model belongs to the field of plastic moulding or connection, and in particular relates to manufacture of an entire device through injection moulding, relating to an injection moulding die for a medical EVA (ethylene vinyl-acetate) outer bottle cap. At present, large infusion packages generally adopt the bottle cap made of glass bottles and ethylene- ethylene vinyl-acetate (EVA). The injection moulding die for the medical EVA outer bottle cap adopts pin-point gage injection, thus being beneficial to the EVA melt for die filling, and guaranteeing the attractive appearance of a plastic part; according to the structure of the plastic part and the characteristic of the material, compulsory demoulding is skillfully design, the structure is simple and reliable, core-pulling from inner side is avoided, the design and manufacture of the die are simplified, and the die cost is saved; the die joint selection and the design of a cooling system are reasonable, and the rate of finished products is improved; standard parts are generally adopted by the die, so that the research and manufacture cost is saved, and the production cycle of the product is shortened. Production practices prove that the motion for opening and closing the die is completely in accordance with the design requirements, the quality of the plastic part is stable, and the die is applicable to mass production.
Description
Technical field
The utility model belongs to moulding or the connection area of plastics, especially uses injection mo(u)lding to make the device of whole, relates to a kind of medical EVA external bottle cap injection forming mold.
Background technology
At present, infusion solutions packing oriented plastic bottle (PP or PE bottle) and soft bag (PVC or non-PVC) development trend, but the correlation between plastic containers and liquid may be permeated, stripping, sorption, chemical reaction and sex change, a lot of liquids still can only adopt glass bottle packaging.The aluminum cap packaging that the traditional glass bottle adopts the natural rubber plug and is difficult for opening, exist rubber stopper easily aging, easily fall the defectives such as bits when poor air-tightness, acupuncture, thereby the bottle cap that numerous producers adopt vial and ethene-vinyl acetate copolymer (EVA) to make is packed as medicine.
Chinese patent CN 201784138U discloses a kind of injection mould with inverted bottle covers, has solved the effectively problem of the demoulding of drinking bottle cap, and yield rate is high, economize on resources; Chinese patent CN 202088385U discloses a kind of Full-automatic hot runner injection molding die, the hot runner structure of employing and automatic ejection demoulding structure, product bottle cap bottom is without the cast gate handle, realized multi-cavity, in enormous quantities, produce continuously.These patents all adopt the traditional injection moulding moulding process, and the plastic Product Precision is lower, are difficult to be applied to the injection mo(u)lding of medical EVA bottle cap.
The infusion solutions glass cap is made of external bottle cap and interior bottle cap, complex structure, and the sanitary standard of medical equipment is high, requires high to the injection mo(u)lding tool and mould.The utility model is in conjunction with the external bottle cap design feature, and design EVA external bottle cap injection forming mold is equipped.
Summary of the invention
The purpose of this utility model is: for medical EVA external bottle cap design feature, propose a kind of medical EVA external bottle cap injection forming mold, realize the high-quality a large amount production of a multi-cavity mold.
The purpose of this utility model is achieved through the following technical solutions.
The utility model provides a kind of medical EVA external bottle cap injection forming mold, comprises sprue bush, cover half seat, takes off and water plate, cavity plate, stripper plate, core, cooling water channel, dynamic model seat; Described sprue bush is built in described cover half seat; With interference fit, guide pillar is arranged on described cavity plate, described cover half seat and described taking off are watered plate and guide pillar matched in clearance, and described taking off watered plate and can be moved along guide pillar, but the described gap of watering between plate and described cover half seat of taking off should guarantee the free falling of the solidifying material of runner; Described cavity plate drives described guide pillar can relatively described cover half seat parallel, and described cavity plate should guarantee the described cavity plate inner chamber of the solidifying material disengaging of described runner with the described gap of watering between plate of taking off; Described cavity plate opposite side also has guide pillar with interference fit, and described stripper plate and described guide pillar matched in clearance also can be along its translations, but the gap between described stripper plate and described cavity plate should guarantee the plastic free falling; Described core, described cooling water channel and described dynamic model seat are fixed with one, and with described guide pillar matched in clearance, the gap of described core and described stripper plate should guarantee that plastic breaks away from described core fully.
Described medical EVA external bottle cap injection forming mold also comprises centring ring, spring, sunk screw, is used for connecting described sprue bush and cover half seat; Described sprue bush hollow, with the injection nozzle contact portion be arc surface, the described spring described sprue bush of compressing and described injection nozzle close contact, when guaranteeing injection moulding without overflowing.
Described medical EVA external bottle cap injection forming mold also comprises stop screw, and described stop screw head is positioned at described cover half seat counterbore, and the other end waters plate and is threaded with taking off, and adjustment screw length is to regulate the described gap of watering plate and described cover half seat of taking off.
Described medical EVA external bottle cap injection forming mold also comprises spring, stop screw, and described stop screw cylindrical end passes described taking off and waters plate, and threaded end is connected with described cavity plate, and adjustment screw length is to regulate described cavity plate and the described gap of watering plate of taking off; The elastic force of described spring can make described taking off water the described cavity plate of plate disengaging, guarantees that the solidifying material of described runner breaks away from described cavity plate inner chamber.
Described medical EVA external bottle cap injection forming mold also comprises limiting plate, stop screw, in the middle of described limiting plate, slotted hole is arranged, and described stop screw cylindrical section passes the hole of described limiting plate, and described stop screw threaded end screws in stripper plate; The length in the hole of described limiting plate has determined the gap between described stripper plate and described cavity plate.
Described medical EVA external bottle cap injection forming mold also comprises attachment screw, is used for described core, described cooling water channel and described dynamic model seat are fixed with one.
Described medical EVA external bottle cap injection forming mold also comprises the soft copper plug, and described soft copper plug one end inserts described core, and the other end gos deep into cooling water channel, the heat of described core is conducted to cooling water lower the temperature.
The beneficial effects of the utility model are: adopt the spot pouring mouth injection of EVA melt filling flow, guaranteed the plastic good looking appearance; Forced demoulding mechanism is simple and reliable, has avoided interior side core-pulling, has simplified Design of Dies and manufacturing; Die joint selection and design of Cooling System are reasonable, have improved the finished product rate; Extensively adopt standard component in mould, saved the research and development manufacturing expense, shortened life cycle of the product.Prove through production practices, the folding mould action of this mould meets designing requirement fully, and plastic part quality is stable, is suitable for producing in enormous quantities.
Description of drawings
Fig. 1 is the utility model mould mold-closing injection process chart;
Fig. 2 is that the solidifying material of the utility model mould branch flow passage is deviate from the sprue bush process chart;
Fig. 3 is the utility model die point cast gate and plastic mask work procedure chart;
Fig. 4 is that the utility model mould is deviate from the solidifying material of branch flow passage process chart;
Fig. 5 is that the utility model mould plastic is deviate from the die cavity process chart;
Fig. 6 is that the utility model mould is deviate from the plastic process chart;
The product cutaway view of Fig. 7 for adopting the utility model to produce;
The product top view of Fig. 8 for adopting the utility model to produce.
Wherein: 1-attachment screw, 2-limiting plate, 3-guide pillar, 4-stop screw, 5-spring, 6-stop screw, the solidifying material of 7-runner, 8-sunk screw; The 9-spring, the 10-injection nozzle, the 11-sprue bush, the 12-centring ring, 13-cover half seat, 14-take off and water plate, the 15-cavity plate, 16-stop screw, 17-attachment screw, 18-stripper plate, 19-core, 20-soft copper plug, 21-cooling water channel, 22-dynamic model seat, 23-plastic, 24-guide pillar.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
A kind of medical EVA external bottle cap injection forming mold, referring to accompanying drawing 1, centring ring 12 is fixed in cover half seat 13 by sunk screw 8, and injection nozzle 10 passes interstitial hole and carries out injection moulding; Sprue bush 11 is built in described cover half seat 13, and described sprue bush 11 hollows contact with arc surface with described injection nozzle 10, the described sprue bush 11 of spring 9 compressing and described injection nozzle 10 close contacts, when guaranteeing injection moulding without overflowing; Described centring ring 12 can prevent that described sprue bush 11 from exposing and drop out under the effect of described spring 9.With interference fit, guide pillar 3 is arranged on cavity plate 15, described cover half seat 13 and take off and water plate 14 and guide pillar 3 matched in clearance, described taking off watered plate 14 and can be moved along guide pillar 3; Stop screw 6 heads are positioned at described cover half seat 13 counterbores, and the other end waters plate 14 and is threaded with described taking off, and the adjustment screw adjustable in length is described takes off the gap of watering plate 14 and described cover half seat 13, but should guarantee 7 free fallings of the solidifying material of runner.Cavity plate 15 drives described guide pillars 3 can relatively described cover half seat 13 parallels; Stop screw 4 cylindrical ends pass described taking off and water plate 14, and threaded end is connected with described cavity plate 15, and the described cavity plate 15 of adjustment screw adjustable in length and the described gap of watering between plate 14 of taking off should guarantee that the solidifying material 7 of described runner breaks away from described cavity plate 15 inner chambers; The elastic force of spring 5 can make described taking off water the plate 14 described cavity plate 15 of disengaging, guarantees that the solidifying material 7 of described runner breaks away from described cavity plate 15 inner chambers.Described cavity plate 15 opposite sides also have guide pillar 24 with interference fit, and described stripper plate 14 also can be along its translation with described guide pillar 24 matched in clearance; In the middle of limiting plate 2, slotted hole is arranged, stop screw 16 cylindrical sections pass the hole of described limiting plate 2, and described stop screw 16 threaded end screw in stripper plate 18; The length in the hole of described limiting plate 2 has determined the gap between described stripper plate 18 and described cavity plate 15, but should guarantee plastic 23 free fallings.Attachment screw 17 connects as one core 19, cooling water channel 21 and dynamic model seat 22, and with described guide pillar 24 matched in clearance, described core 19 should guarantee that with the gap of described stripper plate 18 plastic 23 breaks away from described core 19 fully.Soft copper plug 20 1 ends insert described cores 19, and the other end gos deep into cooling water channel 21, the heat of described core 19 is conducted to cooling water lower the temperature.
A kind of medical EVA external bottle cap injection mo(u)lding course of work, referring to accompanying drawing 1, mold-closing injection: male and female mold matched moulds, injection nozzle 10 overcomes spring 9 active forces, make sprue bush 11 and take off and water plate 14, cavity plate 15, stripper plate 18, core 19 formation confined spaces, the viscous state EVA melt after plasticizing is through injection, pressurize, cooled and solidified moulding.
Referring to accompanying drawing 2, the solidifying material 7 of branch flow passage is deviate from sprue bush 11: injection nozzle 10 moves to left, and under the effect of spring 9, sprue bush 11 moves to left to centring ring 12, deviates from the solidifying material 7 of branch flow passage, and this solidifying material is the cooling curing by-product, the recyclable cycling and reutilization that dissolves.
Referring to accompanying drawing 3, spot pouring mouth separates with plastic 23: dynamic model seat 22 moves to right, cavity plate 15, stripper plate 18, core 19 and cooling water channel 21 servo-actuated die holder 22 under the effect of spring 5 moves to right along guide pillar 3 together, take off that to water plate 14 static with cover half seat 13, mould is opened along A-A face, take off and water plate 14 spot pouring mouth is broken, make it to separate with plastic 23.
Referring to accompanying drawing 4, deviate from the solidifying material 7 of branch flow passage: dynamic model seat 22 continues to move to right, and when 6 position-limiting actions of stop screw, takes off and waters plate 14 and move to right thereupon, and mould is opened along B-B face; Take off when 4 position-limiting actions of stop screw and water plate 14 and cavity plate 15 stop motions, this moment, solidifying material 7 fell automatically from taking off to water plate 14.
Referring to accompanying drawing 5, plastic 23 is deviate from die cavity: stripper plate 18, core 19, the servo-actuated die holder 22 of cooling water channel 21 continue to move to right, and cavity plate 15 stops, mould is opened along C-C face, plastic 23 is deviate from die cavity, the contraction during due to melt cooling, and plastic 23 packs tightly on core 19.
Referring to accompanying drawing 6, deviate from plastic 23: when 2 position-limiting actions of limiting plate, stripper plate 18 stops moving to right, and core 19, the servo-actuated die holder 22 of cooling water channel 21 continue to move to right, and makes plastic 23 force to break away from core 19.
So far mould has been completed an injection cycle, and the product cutaway view that employing the utility model is produced is referring to accompanying drawing 7, and the product top view is referring to accompanying drawing 8.Dynamic model seat 22 moves to left subsequently, injection nozzle 10 moves to right and reset, and can carry out next injection cycle.
Claims (7)
1. a medical EVA external bottle cap injection forming mold, comprise sprue bush, cover half seat, take off and water plate, cavity plate, stripper plate, core, cooling water channel, dynamic model seat; It is characterized in that: described sprue bush is built in described cover half seat; With interference fit, guide pillar is arranged on described cavity plate, described cover half seat and described taking off are watered plate and guide pillar matched in clearance, and described taking off watered plate and can be moved along guide pillar, but the described gap of watering between plate and described cover half seat of taking off should guarantee the free falling of the solidifying material of runner; Described cavity plate drives described guide pillar can relatively described cover half seat parallel, and described cavity plate should guarantee the described cavity plate inner chamber of the solidifying material disengaging of described runner with the described gap of watering between plate of taking off; Described cavity plate opposite side also has guide pillar with interference fit, and described stripper plate and described guide pillar matched in clearance also can be along its translations, but the gap between described stripper plate and described cavity plate should guarantee the plastic free falling; Described core, described cooling water channel and described dynamic model seat are fixed with one, and with described guide pillar matched in clearance, the gap of described core and described stripper plate should guarantee that plastic breaks away from described core fully.
2. medical EVA external bottle cap injection forming mold according to claim 1, is characterized in that: also comprise centring ring, spring, sunk screw, be used for connecting described sprue bush and cover half seat; Described sprue bush hollow, with the injection nozzle contact portion be arc surface, the described spring described sprue bush of compressing and described injection nozzle close contact, when guaranteeing injection moulding without overflowing.
3. medical EVA external bottle cap injection forming mold according to claim 1, it is characterized in that: also comprise stop screw, described stop screw head is positioned at described cover half seat counterbore, the other end waters plate and is threaded with taking off, and adjustment screw length is to regulate the described gap of watering plate and described cover half seat of taking off.
4. medical EVA external bottle cap injection forming mold according to claim 1, it is characterized in that: also comprise spring, stop screw, described stop screw cylindrical end passes described taking off and waters plate, threaded end is connected with described cavity plate, and adjustment screw length is to regulate described cavity plate and the described gap of watering plate of taking off; The elastic force of described spring can make described taking off water the described cavity plate of plate disengaging, guarantees that the solidifying material of described runner breaks away from described cavity plate inner chamber.
5. medical EVA external bottle cap injection forming mold according to claim 1, it is characterized in that: also comprise limiting plate, stop screw, in the middle of described limiting plate, slotted hole is arranged, described stop screw cylindrical section passes the hole of described limiting plate, and described stop screw threaded end screws in stripper plate; The length in the hole of described limiting plate has determined the gap between described stripper plate and described cavity plate.
6. medical EVA external bottle cap injection forming mold according to claim 1, is characterized in that: also comprise attachment screw, be used for described core, described cooling water channel and described dynamic model seat are fixed with one.
7. medical EVA external bottle cap injection forming mold according to claim 1, it is characterized in that: also comprise the soft copper plug, described soft copper plug one end inserts described core, and the other end gos deep into cooling water channel, the heat of described core is conducted to cooling water lower the temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220626894 CN203004202U (en) | 2012-11-25 | 2012-11-25 | Injection moulding die for medical EVA (ethylene vinyl-acetate) outer bottle cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220626894 CN203004202U (en) | 2012-11-25 | 2012-11-25 | Injection moulding die for medical EVA (ethylene vinyl-acetate) outer bottle cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203004202U true CN203004202U (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220626894 Expired - Fee Related CN203004202U (en) | 2012-11-25 | 2012-11-25 | Injection moulding die for medical EVA (ethylene vinyl-acetate) outer bottle cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203004202U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103394181A (en) * | 2013-07-22 | 2013-11-20 | 无锡市鸿丰塑胶制品有限公司 | Air jacket and production process thereof |
| CN103707454A (en) * | 2012-11-25 | 2014-04-09 | 安徽工程大学 | Medical EVA outer bottle cap injection molding technology and die thereof |
-
2012
- 2012-11-25 CN CN 201220626894 patent/CN203004202U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103707454A (en) * | 2012-11-25 | 2014-04-09 | 安徽工程大学 | Medical EVA outer bottle cap injection molding technology and die thereof |
| CN103394181A (en) * | 2013-07-22 | 2013-11-20 | 无锡市鸿丰塑胶制品有限公司 | Air jacket and production process thereof |
| CN103394181B (en) * | 2013-07-22 | 2015-12-23 | 无锡市鸿丰塑胶制品有限公司 | A kind of air-casing and production technology thereof |
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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: 20130619 Termination date: 20141125 |
|
| EXPY | Termination of patent right or utility model |