CN103085235B - A kind of novel full heat channel needle cylinder mould - Google Patents

A kind of novel full heat channel needle cylinder mould Download PDF

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Publication number
CN103085235B
CN103085235B CN201310059962.XA CN201310059962A CN103085235B CN 103085235 B CN103085235 B CN 103085235B CN 201310059962 A CN201310059962 A CN 201310059962A CN 103085235 B CN103085235 B CN 103085235B
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die cavity
interior core
die
mold insert
cavity top
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CN103085235A (en
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曾智
张扬明
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CHENGDU LIANYU PRECISION MACHINERY Co Ltd
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CHENGDU LIANYU PRECISION MACHINERY Co Ltd
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Abstract

The present invention relates to a kind of novel full heat channel needle cylinder mould, it comprises cast gate die (1), die cavity (2), interior core (6), throw-out collar (5), bushing formula die cavity top (3), die cavity top mold insert (4) and interior core mold insert (7), the center of die cavity (2) offers runner (9), the bottom of runner (9) is provided with glue-feeder, die cavity (2) is provided with multiple bushing formula die cavity top (3), die cavity top mold insert (4) is equipped with in the center of bushing formula die cavity top (3), the below of bushing formula die cavity top (3) is provided with interior core (6), interior core mold insert (7) coordinates with die cavity top mold insert (4), the straight drum part of interior core (6) coordinates with die cavity (2), the cone cylinder part of interior core (6) coordinates with throw-out collar (5), the top of throw-out collar (5) coordinates with cast gate die (1).The invention has the advantages that: mould overall dimension is little, cost is low, easy to maintenance, long service life and product quality high.

Description

A kind of novel full heat channel needle cylinder mould
Technical field
The present invention relates to a kind of injector needle cylinder moulding mould, particularly a kind of novel full heat channel needle cylinder mould.
Background technology
What current domestic traditional multi-cavity needle cylinder mould adopted is cold runner die, hot runner mould has just just entered research and development advanced development, because waste material during production product causes production cost to improve more, and die manufacturing cost and maintenance cost are very high, can not meet the cost-saving demand of user far away.External most advanced level namely adopts a mould two chamber hot runner structure, the square die of the many employings of forming part, such structure makes the overall dimension of mould larger, and need to use the dowel hole on high-precision jig grinder processing die and taper hole, require that extremely accurate machine tooling can reach its design accuracy, cost increases relatively, the Mould Machining cycle is long, it enters glue mode is that radially side blow enters glue, enter glue point and be distributed in about 5mm position bottom needle cylinder wall, nozzle flow channel is from being axially converted into the break-in 90 ° of radial palpus, pouring pressure loss is large, energy consumption is large, and mould stream inequality easily produces weld mark and affects product appearance quality on the barrel of cast gate opposite, this pouring type also easily causes product wall unevenness and affects product inherent quality.In addition, syringe top injection hole forming structure adopts die cavity top pin structure, and this structure is unfavorable for that exhaust is that secondly more seriously pin hole in core top is easy to wear when matched moulds, thus directly causes maintenance cost to increase.
Summary of the invention
The object of the invention is to the shortcoming overcoming prior art, there is provided that a kind of mould overall dimension is little, cost is low, a kind of novel full heat channel needle cylinder mould of easy to maintenance, long service life and good product quality, improve quality inside and outside product by the position and exhaust mode of improving gum-injecting port to provide best mould flow point cloth.
Object of the present invention is achieved through the following technical solutions: a kind of novel full heat channel needle cylinder mould, it comprises cast gate die, die cavity, interior core, throw-out collar, bushing formula die cavity top, die cavity top mold insert and interior core mold insert, cast gate die coordinates with die cavity and is installed vertically on cavity plate inside, the center of die cavity offers runner, the bottom of runner is provided with glue-feeder, the same of top of die cavity is circumferentially provided with multiple bushing formula die cavity top, the center on bushing formula die cavity top is set with die cavity top mold insert, the below on bushing formula die cavity top is provided with interior core, the top of interior core and the bottom of interior core mold insert are gluedd joint integrally, the top of interior core mold insert coordinates with die cavity top mold insert, the top of interior core is straight tube shape, the middle part of interior core is cone barrel, the straight drum part of interior core coordinates with die cavity, the cone cylinder part of interior core is connected with the inwall of throw-out collar, top and the cast gate die of throw-out collar are connected, the inside of interior core is provided with cooling-water duct.
Described cast gate die and die cavity adopt pin to locate, and are screwed.
The end face on described bushing formula die cavity top is symmetrically arranged with respectively at least two die cavity top screwed holes and at least two die cavity top locating holes.
Described cavity plate is provided with multiple die cavity.
The external diameter of described cast gate die is less than the external diameter of die cavity, present invention also offers a kind of method adopting full heat channel needle cylinder mould to produce syringe, described full heat channel needle cylinder mould comprises cast gate die, die cavity, interior core, throw-out collar, bushing formula die cavity top, die cavity top mold insert and interior core mold insert, cast gate die coordinates with die cavity and is installed vertically on cavity plate inside, the center of die cavity offers runner, the bottom of runner is provided with glue-feeder, the same of top of die cavity is circumferentially provided with multiple bushing formula die cavity top, the center on bushing formula die cavity top is set with die cavity top mold insert, the below on bushing formula die cavity top is provided with interior core, the top of interior core and the bottom of interior core mold insert are gluedd joint integrally, the top of interior core mold insert coordinates with die cavity top mold insert, the top of interior core is straight tube shape, the middle part of interior core is cone barrel, the straight drum part of interior core coordinates with die cavity, the cone cylinder part of interior core is connected with the inwall of throw-out collar, top and the cast gate die of throw-out collar are connected, the inside of interior core is provided with cooling-water duct, the external diameter of described cast gate die is less than the external diameter of die cavity, described cast gate die and die cavity adopt pin to locate, and are screwed, the end face on described bushing formula die cavity top is symmetrically arranged with respectively at least two die cavity top screwed holes and at least two die cavity top locating holes, columniform shaping die devises four uniform shaping mold cavities along end face circumference, bushing formula die cavity top, die cavity top mold insert, interior core and interior core mold insert are combined to form syringe cavity with four respectively again, wherein, interior core mold insert and interior core glued joint into an entirety, the other end of interior core mold insert coordinates with the die cavity top mold insert being sleeved on inside, bushing formula die cavity top, adopt the shaping die of mould four cavity configuration, cavity plate installs 12 shaping dies, namely form 48 shaping mold cavities,
Described method comprises the following steps: injecting material in runner, bottom runner, one is divided into four, by gum-injecting port to injecting material in syringe cavity, cooling forming in die cavity, form syringe series products, syringe series products front needle tube portion by die cavity top and interior core mold insert shaping, after die sinking, throw-out collar along with push pedal motion axially by product from interior core separately.
The present invention has the following advantages:
1, the present invention adopts mould four cavity configuration, namely four the interior cores be uniformly distributed circumferentially are provided with in each cast gate die, form four shaping mold cavities, bushing formula die cavity top, die cavity top mold insert, interior core mold insert are combined to form syringe cavity with four respectively again, enter glue by glue-feeder, a die cavity pipe four products, the energy consumed reduces more than 40%, and shaping mold cavity arrangement is compact, the size of cavity plate reduces.
2, cost is low is mainly reflected in two aspects: be low cost of manufacture on the one hand, mould four cavity configuration is compact, and the raw material that cavity plate and cast gate die use are few; That maintenance cost is low on the other hand, top that is inner on bushing formula die cavity top and interior core studs with die cavity top mold insert and interior core mold insert respectively, the original interior wearing and tearing of core to die cavity top are transferred to interior core mold insert to the wearing and tearing of die cavity top mold insert, interior core mold insert and die cavity top mold insert volume little, maintenance cost is low.
3, this mould four cavity configuration, the external diameter of cast gate die is less than the external diameter of die cavity, dismounting simple and fast, easy to maintenance.
4, the critical piece wearing and tearing of the mould such as cavity plate, cast gate die, bushing formula die cavity top and interior core are little, and remaining consumable accessory is removable parts, and the mold use life-span increases substantially.
5, entering glue point and entering glue mode to make mould stream in casting process even, the gas that molding cavity inside is formed in casting process is upwards discharged to the air discharge duct end face by the steam vent in the bushing formula die cavity top at top from bottom, thus avoid the defects such as weld mark, bubble, product size instability, substantially increase product appearance quality.This structure enter glue point directly by bottom glue-feeding, avoid and conventional enter the defects such as the product wall unevenness that glue causes from sidewall, substantially increase product quality.
Accompanying drawing explanation
Fig. 1 is the complete section structural representation of die cavity;
Fig. 2 is the plan structure schematic diagram of die cavity;
Fig. 3 is the amplification plan structure schematic diagram on bushing formula die cavity top;
Fig. 4 is the B-B cross-sectional schematic of Fig. 3;
Fig. 5 is the arrangement schematic diagram of die cavity in cavity plate;
In figure: 1-cast gate die, 2-die cavity, 3-bushing formula die cavity top, 4-die cavity top mold insert, 5-throw-out collar, core in 6-, core mold insert in 7-, 8-glue-feeder, 9-runner, 10-cavity plate, 11-die cavity top screwed hole, 12-die cavity top locating hole, 13-cooling-water duct.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described, but protection scope of the present invention is not limited to the following stated.
As depicted in figs. 1 and 2, a kind of novel full heat channel needle cylinder mould, it comprises cast gate die 1, die cavity 2, interior core 6, throw-out collar 5, bushing formula die cavity top 3, die cavity top mold insert 4 and interior core mold insert 7, cast gate die 1 coordinates with die cavity 2 and is installed vertically on cavity plate 10 inside, the center of die cavity 2 offers runner 9, the bottom of runner 9 is provided with glue-feeder 8, the same of top of die cavity 2 is circumferentially provided with multiple bushing formula die cavity top 3, the center on bushing formula die cavity top 3 is set with die cavity top mold insert 4, the below on bushing formula die cavity top 3 is provided with interior core 6, the top of interior core 6 and the bottom of interior core mold insert 7 are gluedd joint integrally, the top of interior core mold insert 7 coordinates with die cavity top mold insert 4, the top of interior core 6 is straight tube shape, the middle part of interior core 6 is cone barrel, the straight drum part of interior core 6 coordinates with die cavity 2, the cone cylinder part of interior core 6 is connected with the inwall of throw-out collar 5, top and the cast gate die 1 of throw-out collar 5 are connected, the inside of interior core 6 is provided with cooling-water duct 13, cast gate die 1 and die cavity 2 adopt pin to locate, and are screwed, and the external diameter of cast gate die 1 is less than the external diameter of die cavity 2.
As shown in Figure 3 and Figure 4, the end face on bushing formula die cavity top 3 is symmetrically arranged with at least two die cavity top screwed holes 11 and at least two die cavity top locating holes 12 respectively.
As shown in Figure 5, cavity plate 10 is provided with multiple die cavity 2.
Main shaping die is made up of cast gate die 1, die cavity 2, throw-out collar 5, and cast gate die 1 and die cavity 2 load in cavity plate 10 simultaneously, and be connected to each other and adopt pin hole location, screw connects, and conveniently install and keep in repair, the external diameter of cast gate die 1 is less than the external diameter of die cavity.In order to improve intensity and the rigidity of cast gate die 1, cast gate die 1 and throw-out collar 5 are fitted completely.Columniform shaping die devises four uniform shaping mold cavities along end face circumference, more bushing formula die cavity top 3, die cavity top mold insert 4, interior core 6 and interior core mold insert 7 are combined to form syringe cavity with four respectively.Wherein, interior core mold insert 7 glueds joint into an entirety with interior core 6, and the other end of interior core mold insert 7 coordinates with the die cavity top mold insert 4 being sleeved on inside, bushing formula die cavity top 3, effectively prevent the wearing and tearing of interior core mold insert 7 to bushing formula die cavity top 3.Injecting material in runner 9, bottom runner 9, one is divided into four, by gum-injecting port 8 to injecting material in syringe cavity, cooling forming in die cavity 2, form syringe series products, syringe series products front needle tube portion by die cavity top 3 and interior core mold insert 7 shaping, after die sinking, throw-out collar 5 along with push pedal motion axially by product from interior core 6 separately, thus ensure the smooth demoulding of product.
Adopt the shaping die of mould four cavity configuration, cavity plate can be installed 12 shaping dies, namely form 48 shaping mold cavities.

Claims (1)

1. the method adopting full heat channel needle cylinder mould to produce syringe, it is characterized in that: described full heat channel needle cylinder mould comprises cast gate die (1), die cavity (2), interior core (6), throw-out collar (5), bushing formula die cavity top (3), die cavity top mold insert (4) and interior core mold insert (7), cast gate die (1) coordinates with die cavity (2) and is installed vertically on cavity plate (10) inside, the center of die cavity (2) offers runner (9), the bottom of runner (9) is provided with glue-feeder (8), the same of top of die cavity (2) is circumferentially provided with multiple bushing formula die cavity top (3), the center of bushing formula die cavity top (3) is set with die cavity top mold insert (4), the below of bushing formula die cavity top (3) is provided with interior core (6), the top of interior core (6) and the bottom of interior core mold insert (7) are gluedd joint integrally, the top of interior core mold insert (7) coordinates with die cavity top mold insert (4), the top of interior core (6) is straight tube shape, the middle part of interior core (6) is cone barrel, the straight drum part of interior core (6) coordinates with die cavity (2), the cone cylinder part of interior core (6) is connected with the inwall of throw-out collar (5), top and the cast gate die (1) of throw-out collar (5) are connected, the inside of interior core (6) is provided with cooling-water duct (13), the external diameter of described cast gate die (1) is less than the external diameter of die cavity (2), described cast gate die (1) and die cavity (2) adopt pin to locate, and are screwed, the end face of described bushing formula die cavity top (3) is symmetrically arranged with respectively at least two die cavity tops screwed hole (11) and at least two die cavity tops locating hole (12), columniform shaping die devises four uniform shaping mold cavities along end face circumference, the bushing formula die cavity top (3) with four respectively again, die cavity top mold insert (4), interior core (6) and interior core mold insert (7) are combined to form syringe cavity, wherein, interior core mold insert (7) glueds joint into an entirety with interior core (6), die cavity top mold insert (4) that the other end of interior core mold insert (7) is inner with being sleeved on bushing formula die cavity top (3) coordinates, adopt the shaping die of mould four cavity configuration, at upper installation 12 the shaping dies of cavity plate (10), namely 48 shaping mold cavities are formed,
Described method comprises the following steps: to runner (9) interior injecting material, runner (9) bottom one is divided into four, by gum-injecting port (8) to injecting material in syringe cavity, cooling forming in die cavity (2), form syringe series products, syringe series products front needle tube portion by die cavity top (3) and interior core mold insert (7) shaping, after die sinking, throw-out collar (5) along with push pedal motion axially by product from interior core (6) separately.
CN201310059962.XA 2013-02-26 2013-02-26 A kind of novel full heat channel needle cylinder mould Active CN103085235B (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021121977A1 (en) * 2019-12-19 2021-06-24 Braunform Gmbh Tool and method for injection moulding an injection-moulded part in a tool

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105382966A (en) * 2015-12-02 2016-03-09 温州宏泰模具有限公司 Pen mold core, feeding method of pen mold core and machining mold
DE102016107131B4 (en) * 2016-04-18 2020-02-13 Gerresheimer Regensburg Gmbh Tool for manufacturing an injection device and method for manufacturing an injection device
CN105922519A (en) * 2016-05-25 2016-09-07 江天精密制造科技(苏州)有限公司 Six-cavity syringe mold

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CN201848965U (en) * 2010-08-05 2011-06-01 崇州君健塑胶有限公司 Hot runner plastic injection mould
CN102601931A (en) * 2012-03-10 2012-07-25 苏州雅尔塑业科技有限公司 Injection mold for processing elongated push rod
CN202572824U (en) * 2012-03-10 2012-12-05 苏州雅尔塑业科技有限公司 Injection molding mould for processing long and thin push rod
CN102909829A (en) * 2012-10-26 2013-02-06 浙江千禧光塑料模具有限公司 Full hot runner forming die for injector outer sheath
CN203171962U (en) * 2013-02-26 2013-09-04 成都市联余精密机械有限公司 Novel full hot runner needle cylinder mould

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201702900U (en) * 2010-05-31 2011-01-12 浙江千禧光塑料模具有限公司 Injector needle cylinder moulding mould
CN201848965U (en) * 2010-08-05 2011-06-01 崇州君健塑胶有限公司 Hot runner plastic injection mould
CN102601931A (en) * 2012-03-10 2012-07-25 苏州雅尔塑业科技有限公司 Injection mold for processing elongated push rod
CN202572824U (en) * 2012-03-10 2012-12-05 苏州雅尔塑业科技有限公司 Injection molding mould for processing long and thin push rod
CN102909829A (en) * 2012-10-26 2013-02-06 浙江千禧光塑料模具有限公司 Full hot runner forming die for injector outer sheath
CN203171962U (en) * 2013-02-26 2013-09-04 成都市联余精密机械有限公司 Novel full hot runner needle cylinder mould

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021121977A1 (en) * 2019-12-19 2021-06-24 Braunform Gmbh Tool and method for injection moulding an injection-moulded part in a tool

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