CN105619708A - Mold, injection molding machine and mold opening method - Google Patents

Mold, injection molding machine and mold opening method Download PDF

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Publication number
CN105619708A
CN105619708A CN201510549630.9A CN201510549630A CN105619708A CN 105619708 A CN105619708 A CN 105619708A CN 201510549630 A CN201510549630 A CN 201510549630A CN 105619708 A CN105619708 A CN 105619708A
Authority
CN
China
Prior art keywords
mother module
core
module core
mould
thimble
Prior art date
Application number
CN201510549630.9A
Other languages
Chinese (zh)
Inventor
姜贵阳
Original Assignee
宇龙计算机通信科技(深圳)有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 宇龙计算机通信科技(深圳)有限公司 filed Critical 宇龙计算机通信科技(深圳)有限公司
Priority to CN201510549630.9A priority Critical patent/CN105619708A/en
Publication of CN105619708A publication Critical patent/CN105619708A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03Injection moulding apparatus
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/40Removing or ejecting moulded articles
    • B29C45/44Removing or ejecting moulded articles for undercut articles

Abstract

The embodiment of the invention discloses a mold and an injection molding machine. The draft angle of the mold is 0 degree. The mold comprises a male mold core, a first female mold core, a second female mold core and an inclined ejector. The first female mold core is arranged on the upper portion of the male mold core. The second female mold core is arranged between the first female mold core and the male mold core. A mold cavity is defined by the first female mold core, the second female mold core and the male mold core. The second female mold core is of an integrated structure. The inclined ejector is arranged in the mold cavity of the mold and extends towards the male mold core from the second female mold core. When a product with the righted-angle face in appearance is injection-molded through the mold, the side face of the injection-molded product is molded through the second female mold core, and the second female mold core is of the integrated structure, so that no parting line exists after the product is injection-molded, and the quality of the side face of the product is guaranteed.

Description

A kind of mould, injection machine and die sinking method
Technical field
The present invention relates to injection molding technology field, more particularly, it relates to a kind of mould, injection machine and die sinking method.
Background technology
At present, it is typically all employing injection machine to realize when plastic cement products appearance is right-angle surface, the mould part of traditional injection machine generally comprises: mother module core, slide block, male die core, wherein, described mother module core is for the molding of product top, described slide block is for molding bottom product, referring to Fig. 1, in order to ensure the surface quality of described product, prevent the damage product side when die sinking, the quantity of described slide block is multiple, is for respectively forming each side of product, adopts thimble ejecting product after pulling open the plurality of slide block respectively after product injection mo(u)lding. But owing to when forming product side, owing to have employed multiple slide block, after causing injection machine injection mo(u)lding, the non-edges and corners (position that two slide blocks splice mutually) of product appearance side have parting line, affect product surface appearance.
Summary of the invention
It is an object of the invention to provide a kind of mould and injection machine, have parting line for solving in prior art the non-edges and corners of product appearance side after product injection mo(u)lding, the problem affecting product surface appearance.
For achieving the above object, following technical scheme is embodiments provided:
A kind of mould, has the product of right-angle surface outward appearance, including male die core, the first mother module core, the second mother module core and oblique top for injection moulding;
Described first mother module core is arranged on described male die core top, and described second mother module core is arranged between described first mother module core and male die core, and described first mother module core, the second mother module core form mold cavity with described male die core; Described second mother module core is integral type structure;
Described oblique top is arranged in described mold cavity, and is extended to described male die core by described second mother module core;
The draft angle of described mould is 0 degree.
Preferably, in above-mentioned mould, described oblique top has an inclination angle, and the angle at described inclination angle is preset value.
Preferably, in above-mentioned mould, the angle at described predetermined inclination angle is any one angle within predetermined inclination angular range.
Preferably, in above-mentioned mould, described predetermined inclination angle is 5 degree.
A kind of injection machine, including the mould described in power set, thimble and above-mentioned any one, described power set are connected with described thimble and mould, and the male die core of described thimble and described mould is slidably connected.
A kind of for the die sinking method in above-mentioned injection machine, comprise the following steps:
A. the first mother module core separates under the effect of power set with the second mother module core;
B. product, the second mother module core, oblique top and thimble separate with male die core under the effect of power set simultaneously;
C. power set break-off in Preset Time, now product cooling is reduced and departs from the second mother module core;
D. product is ejected by thimble.
Preferably, in above-mentioned die sinking method, also include:
During the break-off in the given time of the power set in described step c, gases at high pressure outut device sprays high pressure cooling gas to described product.
Preferably, in above-mentioned die sinking method, the Preset Time in described step c is preset any one time within scope cool time.
By above scheme, when applying the product that mold injection disclosed in the above embodiments of the present application has right-angle surface outward appearance, the second mother module core is adopted to be shaped and described second mother module core is integral type structure owing to being injection molding product side, therefore after product injection moulding completes, parting line is not had, it is ensured that the side quality of product.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the slide block of the mould of injection machine in prior art;
Fig. 2 is the structural representation of the second mother module core in mould disclosed in the embodiment of the present application;
Schematic diagram when Fig. 3 is use mold injection product disclosed in the embodiment of the present application;
Fig. 4 is the flow chart of the die sinking method being applied in injection machine disclosed in the embodiment of the present application disclosed in the embodiment of the present application.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Fig. 2 is the structural representation of the second mother module core in mould disclosed in the embodiment of the present application;
Schematic diagram when Fig. 3 is use mold injection product disclosed in the embodiment of the present application.
There is it be directed in prior art to adopt while product that the mold injection of multiple second mother module core has right-angle surface mechanism, easily cause the problem that parting line occurs in the product after injection mo(u)lding, the embodiment of the present application discloses a kind of mould, the draft angle of described mould is 0 degree, referring to Fig. 2 and 3, described mould specifically includes: male die core 1, oblique top 2, first mother module core 4 and the second mother module core 5, wherein, described first mother module core 4 is arranged on described male die core 1 top, described second mother module core 5 is arranged between described first mother module core 4 and male die core 1, described first mother module core 4, second mother module core 5 forms mold cavity with described male die core 1, described second mother module core 4 is integral type structure, described oblique top 2 is arranged in described mold cavity, and is extended to described male die core 1 by described second mother module core 4.
Referring to Fig. 2, the quantity of described second mother module core is 1, i.e. relative to the technical scheme adopting multiple slide block that the side of product is shaped in prior art, only with described second mother module core, described product is shaped in mould disclosed in the present application.
When applying the product that mold injection disclosed in the above embodiments of the present application has right-angle surface outward appearance, the second mother module core is adopted to be shaped and described second mother module core is integral type structure owing to being injection molding product side, therefore after product injection moulding completes, the side of product does not have parting line, it is ensured that the side quality of product.
It is understandable that, when adopting the product of above-mentioned mold injection trench structure, when described product, second mother module core 5, after oblique top 2 and thimble 3 separate with described male die core 1, described product enters cooling stage, in order to prevent described oblique top 2 from stopping that product shrinks, enough shrink space are reserved to product, described oblique top 2 should have an inclination angle, the angular dimension at described inclination angle is preset value ��, described preset value �� can be any one angle in predetermined inclination angular range, described range of tilt angles can according to user's request sets itself, such as, described range of tilt angles can be: [5 ��, 13 ��], preferably, in the technical scheme that the application is disclosed above, the inclination angle of described oblique top 2 is 5 ��. after injection moulding completes, under the effect of injection machine, in the process that product, the second mother module core 5, oblique top 2 and thimble 3 and described male die core 1 separate, described oblique top 2 can depart from product inwall, assume when the distance of separation of product, the second mother module core 5, oblique top 2 and thimble 3 and described male die core 1 is L, described L is the distance between product and described male die core, owing to described oblique top has an inclination angle, therefore described oblique top 2 can move along the direction of the medial wall of the product being perpendicular to described trench structure in the process, and displacement is tg �� * L.
It is understandable that, described mould disclosed in the above embodiments of the present application is the mould meeting pre-conditioned plastic cement products for injection moulding shrinkage factor, size, namely after shrinking, product size is less than the size of the mold slots of described second mother module core 5, and gap between monolateral product side surface and the inwall of described second mother module core 5 product more than 0.05mm after shrinking.
Corresponding to above-mentioned mould, disclosed herein as well is a kind of injection machine applying above-mentioned mould, described injection machine includes: mould disclosed in the above-mentioned any one embodiment of power set, thimble and the application, the power set of described injection machine are connected with described thimble and mould, and the male die core of described thimble and described mould is slidably connected.
Being directed to above-mentioned injection machine, disclosed herein as well is a kind of die sinking method being applied in above-mentioned injection machine, this die sinking method adopts the die sinking controller of described injection machine to realize, and referring to Fig. 4, the method includes:
Step a: the first mother module core 4 separates under the effect of power set with the second mother module core 5;
Step b: product, the second mother module core 5, oblique top 2 and thimble 3 separate with male die core under the effect of power set simultaneously;
Step c: power set are break-off in Preset Time, now product cooling is reduced and departs from the second mother module core 5;
Step d: product is ejected by thimble.
Described die sinking controller is by being controlled the power set of described injection machine and thimble, to realize die sinking method disclosed in the above embodiments of the present application, when mold injection product disclosed in described injection machine application the above embodiments of the present application, when mould is carried out die sinking after completing by injection moulding, first, described die sinking controller is by controlling described power set, described second mother module core 5 and described first mother module core 4 is made to separate (namely controlling described first mother module core 4 to move) along die sinking direction Z, then, after described second mother module core 5 separates with described first mother module core 4, described power set are under the control of described die sinking controller, control described second mother module core 5, oblique top 2, thimble 3 and product and described male die core 1 separate and (control described to utilize conventional oil cylinder or cylinder power to make the second mother module core 5, oblique top 2, thimble 3 and product move along described die sinking direction or control described male die core and move to the direction that described die sinking is in opposite direction), finally, when described second mother module core 5, oblique top 2, after thimble 3 and product separate with described male die core 1, through Preset Time, product shrinks after separating with described second mother module core 5, described die sinking controller controls thimble 2 ejecting product.
Referring to technical scheme disclosed in the above embodiments of the present application, due in such scheme, the described quantity of the second mother module core owing to being used for product side is shaped is 1, therefore, complete trailing flank in product injection moulding and do not have parting line, further, when ejecting described product, product separates with described mould, thus without the side quality damaging product.
It is understandable that, in order to make described product fully shrink, to ensure not result in the damage of product side when adopting thimble ejecting product, described Preset Time in the above embodiments of the present application can be preset any one time within the scope of cool time, preferably, described Preset Time in the above embodiments of the present application is not less than 2 seconds, namely after described second mother module core, oblique top, thimble and product separate at least 2 seconds with described male die core, adopting thimble ejecting product, its concrete time span can according to user's request from Row sum-equal matrix and setting. Certainly, it is directed to the product of difformity, thickness, material, the cool time needed is different, therefore, described die sinking controller in the above embodiments of the present application could be included for generating according to user input data the controller of described Preset Time, user can adopt this controller according to product demand, and the size of described Preset Time is set.
It is understandable that, product in order to realize injecting quickly cools down, during power set break-off in the given time in the step c of the above-mentioned die sinking method of the application, also can adopt product injection high pressure cooling gas described in gases at high pressure outut device case, namely, described injection machine disclosed in the above embodiments of the present application can also include a gases at high pressure outut device, for when described second mother module core, oblique top, thimble and product separate with described male die core after Preset Time in, persistence to described product spray high pressure cooling gas, to accelerate the contraction speed of product.
The die sinking process of above-mentioned injection machine disclosed in the present application is illustrated by existing the application with specific embodiment:
In the present embodiment, product wall thickness is 3mm, and overall dimensions long * width * height is: 100x100x25mm; Appearance for facing directly, i.e. 0 degree of die sinking direction draft angle, appearance requires as minute surface; Product is selected, and shrinkage factor is the PC plastic material of 0.005.
The concrete mould die sinking method of this product is as follows:
A1: the first mother module core first separates under the pulling force of the power set of injection machine with the second mother module core;
B1: utilize the power set of conventional oil cylinder or cylinder power etc. to make product, second mother module core, oblique top, thimble separates with described male die core simultaneously, distance of separation L is more than 22mm, now described oblique top departs from product medial wall, owing to described oblique top has certain inclined angle alpha, its moving process can exist longitudinally (along thimble direction) simultaneously mobile mobile with laterally (being perpendicular to thimble direction), its inclined angle alpha is typically no less than 5 degree, therefore the distance of its transverse shifting is tg �� * 22mm, namely described oblique top is more than tg �� * 22mm with the distance of product inwall, described tg �� * 22mm is more than 0.05mm, therefore, product will not be shunk and counteract by described oblique top,
C1: power set suspend more than 2 seconds (time span can according to user's request from Row sum-equal matrix), size reduction after now plastic cement products continuation cooling, product side and the second mother module core are departed from (now, product is played the role of positioning by described thimble, to ensure that product surrounding all departs from described second mother module core, ensure that product will not because of shrinking generation off normal, it is prevented that gap is uneven);
D1: under the active force of injection machine push rod, control thimble ejecting product, product come off after pickup.
To sum up the application effectively make use of the physical characteristic of plastic cement cooling meat, the cooperation with die sinking order is changed by mould typing mechanism, adopt plastic mould list the second mother module core shaping mechanism, namely the method for non-edges and corners entirety die straight forming replaces the mould parting method of surrounding slide block, solves the problem that there is clamp at plastic cement products traditional dies typing appearance slide block typing place.
In this specification, each embodiment adopts the mode gone forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually referring to.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention. The multiple amendment of these embodiments be will be apparent from for those skilled in the art, and generic principles defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments. Therefore, the present invention is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.

Claims (8)

1. a mould, has the product of right-angle surface outward appearance for injection moulding, it is characterised in that include male die core, the first mother module core, the second mother module core and oblique top;
Described first mother module core is arranged on described male die core top, and described second mother module core is arranged between described first mother module core and male die core, and described first mother module core, the second mother module core form mold cavity with described male die core; Described second mother module core is integral type structure;
Described oblique top is arranged in described mold cavity, and is extended to described male die core by described second mother module core;
The draft angle of described mould is 0 degree.
2. mould according to claim 1, it is characterised in that described oblique top has an inclination angle, the angle at described inclination angle is preset value.
3. mould according to claim 2, it is characterised in that the angle at described predetermined inclination angle is any one angle within predetermined inclination angular range.
4. mould according to claim 3, it is characterised in that described predetermined inclination angle is 5 degree.
5. an injection machine, including power set, thimble and the mould as described in claim 1-4 any one, described power set are connected with described thimble and mould, and the male die core of described thimble and described mould is slidably connected.
6. the die sinking method for the injection machine in described claim 5, it is characterised in that comprise the following steps:
A. the first mother module core separates under the effect of power set with the second mother module core;
B. product, the second mother module core, oblique top and thimble separate with male die core under the effect of power set simultaneously;
C. power set break-off in Preset Time, now product cooling is reduced and departs from the second mother module core;
D. product is ejected by thimble.
7. die sinking method according to claim 6, it is characterised in that also include:
During the break-off in the given time of the power set in described step c, gases at high pressure outut device sprays high pressure cooling gas to described product.
8. die sinking method according to claim 6, it is characterised in that the Preset Time in described step c is preset any one time within scope cool time.
CN201510549630.9A 2015-08-31 2015-08-31 Mold, injection molding machine and mold opening method CN105619708A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201510549630.9A CN105619708A (en) 2015-08-31 2015-08-31 Mold, injection molding machine and mold opening method

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CN105619708A true CN105619708A (en) 2016-06-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106738667A (en) * 2016-11-26 2017-05-31 滁州市荣康塑料制品有限公司 For the spraying-free high-surface gloss traceless injection molding process of LED television fore shell

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CN106738667A (en) * 2016-11-26 2017-05-31 滁州市荣康塑料制品有限公司 For the spraying-free high-surface gloss traceless injection molding process of LED television fore shell

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