CN102275259A - Flashing groove for sector gate mold - Google Patents
Flashing groove for sector gate mold Download PDFInfo
- Publication number
- CN102275259A CN102275259A CN2011101136611A CN201110113661A CN102275259A CN 102275259 A CN102275259 A CN 102275259A CN 2011101136611 A CN2011101136611 A CN 2011101136611A CN 201110113661 A CN201110113661 A CN 201110113661A CN 102275259 A CN102275259 A CN 102275259A
- Authority
- CN
- China
- Prior art keywords
- fan gate
- groove
- flash
- template
- mould
- 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
Links
Images
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a sector gate mold. The mold comprises a template, mold cavities arranged on the template, a collosol main inlet, sprues used for connecting the mold cavities and the collosol main inlet, and sector gates arranged on the template. The sector gates are positioned on the end of the sprue, and are communicated with the mold cavities. A flashing groove encircles the template. The technical effect of the invention is that: a flashing groove with a U-shaped or V-shaped cross section for collecting flash is arranged on the mold, and the flashing groove is designed into one with a cross section of a hemicycle with a diameter of 10mm, such that damages of the flash upon the material are reduced.
Description
Technical field
The present invention relates to a kind of mould, relate in particular to a kind of flash groove of fan gate mould.
Background technology
Flash claims overlap, excessive limit etc. again, occurs in mostly on the mould deciliter position, locates as poly-decomposition face, the slide assembling part position of slide block, the slit of mold insert, the space of push rod etc.If the untimely solution of overlap will further be magnified, thereby forming local falling into, impressing mould collapses, finally may make nonvolatil infringement.The flash in mold insert slit and push rod space also can make goods be stuck on the mould, influences the demoulding.The generation reason of flash has following four kinds: (1) mold clamping force deficiency; (2) the material temperature is too high; (3) mold defect; (4) process conditions control is improper.
Chinese patent CN 201183304Y discloses a kind of mold runner structure that penetrates flash of slowing down, and has runner on this mould, and its upper and lower mould closes the closed surface that face is higher than runner, and both drops are greater than five centimetres, and runner comprises that main flow arrives and secondary channels.This patent produces the melten gel gravity flow track overflow up and down empty avoiding band of die face because of the full mould moment back pressure of die cavity causes runner hydraulic pressure to press greater than the board matched moulds by changing runner die face structure on every side when having avoided the melten gel ejection formation.But this patent has just been slowed down the ejaculation flash, and does not in time handle or flash is collected for the melten gel that overflows.
Summary of the invention
Purpose of the present invention provides a kind of mold flashing groove, is that the groove of U-shaped or V-arrangement is collected flash by the cross section is set around the mould, has reduced the damage of flash to product.
In order to achieve the above object, the present invention proposes a kind of fan gate mould, comprise a template, described template is provided with die cavity, melten gel main-inlet and connects described die cavity and the runner of described melten gel main-inlet, also be provided with fan gate and flash groove on the described template, described fan gate is positioned at the terminal of described runner and connects with described die cavity, described flash groove be enclosed in described template around.
The flash groove of above-mentioned fan gate mould, the cross section of described mold flashing groove is the U font.
The flash groove of above-mentioned fan gate mould, the cross section of described mold flashing groove are semicircle.
The flash groove of above-mentioned fan gate mould, the diameter of the cross section of described mold flashing groove are 10mm.
The flash groove of above-mentioned fan gate mould, the cross section of described mold flashing groove becomes V-shape.
The flash groove of above-mentioned fan gate mould, described fan gate is fan-shaped.
The flash groove of above-mentioned fan gate mould, the less end of described fan gate is communicated with described runner, and the more end of described fan gate is communicated with described die cavity.
The flash groove of above-mentioned fan gate mould, the thickness of the end that described fan gate is less is greater than the thickness of the bigger end of described fan gate.
The flash groove of above-mentioned fan gate mould, described template are provided with four die cavities, and each described die cavity is a corresponding fan gate respectively.
Technique effect of the present invention is to be provided with the cross section on mould be that the flash groove of U-shaped or V-arrangement is collected flash, and the semicircle that especially flash groove is designed to the cross section and is diameter 6mm has reduced the damage of flash to product to collect more flash.
Description of drawings
By the description of its exemplary embodiment being carried out below in conjunction with accompanying drawing, the above-mentioned feature and advantage of the present invention will become apparent and understand easily.
The schematic diagram of Fig. 1 fan gate mold flashing of the present invention groove;
Fig. 2 is the generalized section of mold flashing groove.
The reference numeral explanation:
The 1-template, 2-fan gate, 3-runner, 4-die cavity, 5-flash groove.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
Pressing mold is that raw material is put into the reinforced chamber of mould under the forming temperature, makes its pressurized that is heated, and becomes molten condition and is full of whole die cavity.Behind the plastic solidified forming, upper and lower mould is opened and is utilized liftout attachment to eject plastic, thereby obtains required goods, is mainly used in the moulding of thermosetting melten gel.Be characterized in that simple, no running gate system, material consume less, product deformation is little, contraction is little, anisotropy is little.The typical structure of compression molding is a fixed compression mould, and its upper and lower mould all is fixed on the press, and operations such as die sinking, matched moulds, the demoulding are all carried out in press, the production efficiency height, and simple to operate, labour intensity is little, and the die sinking vibration is little, and die life is long.But its complex structure, the cost height, and lay the inserts inconvenience.Be applicable to be shaped big in batches or the bigger plastic of shape.The compression forming of thermosetting melten gel need be spent under the higher temperature and be carried out, therefore mould must heat, and common mode of heating has electrical heating, Steam Heating, coal gas or natural gas heating etc., and electrical heating is used general, but it maintains trouble, and temperature homogeneity is difficult to control.What high-precision compression molding application was more is to adopt the oil heating, and its heating-up temperature can guarantee high conformity, and the low while of cost can prolong the service life of mould.
The version that cooperates according to the mould upper and lower mould can be divided into excessive formula, half overflow formula and three kinds of the formulas of not overflowing.
The formula mould that overflows is made up of upper die and lower die two parts, and two-part up and down accurate closure guarantees that by leading dowel the demoulding of goods is finished by knock-pin, but small-sized excessive formula mould is not necessarily led dowel and knock-pin.This mould structure is fairly simple, processing ease, and low cost of manufacture, comparatively suitable to compacting flat disk or butterfly-shaped goods, be applicable to compacting all kinds melten gel.But, should not suppress the big melten gel of shrinkage factor because of former is more shallow.When mold pressing, unnecessary material can overflow.Because the flash relation, mold closing can not be too slow during compacting, forms thicker burr otherwise flash, and it is time-consuming to remove burr, and products appearance is also influenced.Mold closing can not be too fast, otherwise spill more material, and the molding pressure partial loss is on the supporting surface of mould, and extrudate density descends, and performance reduces.Flash groove is used to the generation of overflowing unnecessary melten gel, preventing weld mark.It is opened at the position that is prone to weld mark, or is opened on the die joint.The size of flash groove should be suitable, and the excessive then flash of groove is too much, plastic tissue looseness or scarce material, the too small then flash of groove deficiency.Generally speaking, groove width 3-4mm, dark 0.1-0.2mm is by the die trial correction.
Flashless mold claims closed pressing mold again, and this mould has feed compartment, and its section configuration and die cavity are identical, and feed compartment is the continuity on die cavity top.Do not have squish lip, but patrix and counterdie have highly little matched in clearance, about about 0.075 mm of general every limit gap width, melten gel unnecessary during compacting overflows along fit clearance, makes plastic form the burr of vertical direction.After the mould closure, patrix and counterdie promptly form airtight die cavity fully, and the pressure of press almost can be passed to melten gel fully during compacting.It is big that the characteristics of positive mould are that plastic bears pressure, so density is good, and the intensity height.Positive mould is because the spill-out of melten gel is few. so the height dimension that how much directly affects plastic of feeding quantity, the reinforced all accurately weighings of every mould, so the plastic height dimension be difficult for to guarantee, so good fluidity, the melten gel that by volume measures easily generally do not adopt positive mould.Patrix and feed compartment sidewall friction can abrade the feed compartment sidewall inevitably, and simultaneously, the sectional dimension of feed compartment is identical with the die cavity cross section, and the feed compartment that has scar when ejecting can damage the plastic outer surface.Positive mould must be provided with ejecting device, otherwise plastic is difficult to take out.
Fig. 1 shows fan gate mold flashing groove of the present invention.The fan gate mould comprises a template 1, and the runner 3 that template 1 is provided with die cavity 4, melten gel main-inlet and connects die cavity 4 and melten gel main-inlet also is provided with fan gate 2 on the template 1, and fan gate 2 is positioned at the terminal of runner 3 and connects with die cavity 4.Runner 3 can be a sprue, also can be the runner that is separated by sprue.Fan gate 2 is fan-shaped.Fan gate 2 less ends are communicated with runner 3, and fan gate 2 more ends are communicated with die cavity 4.The thickness of the end that fan gate 2 is less is greater than the thickness of the bigger end of fan gate 2.Template 1 is provided with four die cavities 4, and each die cavity 4 is a corresponding fan gate 2 respectively.Also be provided with flash groove 5 on the template 1, flash groove 5 be enclosed in described template 1 around.
Fig. 2 is the generalized section of mold flashing groove.The cross section of flash groove 5 is the U font.The cross section of flash groove 5 is semicircle.Further, the diameter of the cross section of flash groove 5 is 10mm.The cross section of flash groove 5 also can become V-shape.
It should be noted that; above content is to further describing that the present invention did in conjunction with concrete embodiment; can not assert that the specific embodiment of the present invention only limits to this; under above-mentioned guidance of the present invention; those skilled in the art can carry out various improvement and distortion on the basis of the foregoing description, and these improvement or distortion drop in protection scope of the present invention.
Claims (9)
1. a fan gate mould comprises a template, and described template is provided with die cavity, melten gel main-inlet and connects described die cavity and the runner of described melten gel main-inlet, it is characterized in that:
Also be provided with fan gate and flash groove on the described template, described fan gate is positioned at the terminal of described runner and connects with described die cavity, described flash groove be enclosed in described template around.
2. the flash groove of fan gate mould according to claim 1 is characterized in that:
The cross section of described mold flashing groove is the U font.
3. the flash groove of fan gate mould according to claim 2 is characterized in that:
The cross section of described mold flashing groove is semicircle.
4. the flash groove of fan gate mould according to claim 4 is characterized in that:
The diameter of the cross section of described mold flashing groove is 10mm.
5. the flash groove of fan gate mould according to claim 1 is characterized in that:
The cross section of described mold flashing groove becomes V-shape.
6. the flash groove of fan gate mould according to claim 1 is characterized in that:
Described fan gate is fan-shaped.
7. the flash groove of fan gate mould according to claim 6 is characterized in that:
The less end of described fan gate is communicated with described runner, and the more end of described fan gate is communicated with described die cavity.
8. the flash groove of fan gate mould according to claim 6 is characterized in that:
The thickness of the end that described fan gate is less is greater than the thickness of the bigger end of described fan gate.
?
9. the flash groove of fan gate mould according to claim 1 is characterized in that:
Described template is provided with four die cavities, and each described die cavity is a corresponding fan gate respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101136611A CN102275259A (en) | 2011-05-04 | 2011-05-04 | Flashing groove for sector gate mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101136611A CN102275259A (en) | 2011-05-04 | 2011-05-04 | Flashing groove for sector gate mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102275259A true CN102275259A (en) | 2011-12-14 |
Family
ID=45101142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101136611A Pending CN102275259A (en) | 2011-05-04 | 2011-05-04 | Flashing groove for sector gate mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102275259A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104760221A (en) * | 2015-04-22 | 2015-07-08 | 浙江荣新工贸有限公司 | Anti-overflow branch runner system of plastic tray mold |
| CN105034283A (en) * | 2015-09-17 | 2015-11-11 | 京东方科技集团股份有限公司 | Mold, light guiding plate, manufacturing method and device for mold and light guiding plate and display module |
| CN110561702A (en) * | 2018-06-05 | 2019-12-13 | 深圳市裕展精密科技有限公司 | Injection mould |
| CN115958178A (en) * | 2023-01-12 | 2023-04-14 | 浙江赛豪实业有限公司 | Mold flash exhaust structure |
-
2011
- 2011-05-04 CN CN2011101136611A patent/CN102275259A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104760221A (en) * | 2015-04-22 | 2015-07-08 | 浙江荣新工贸有限公司 | Anti-overflow branch runner system of plastic tray mold |
| CN105034283A (en) * | 2015-09-17 | 2015-11-11 | 京东方科技集团股份有限公司 | Mold, light guiding plate, manufacturing method and device for mold and light guiding plate and display module |
| CN110561702A (en) * | 2018-06-05 | 2019-12-13 | 深圳市裕展精密科技有限公司 | Injection mould |
| CN115958178A (en) * | 2023-01-12 | 2023-04-14 | 浙江赛豪实业有限公司 | Mold flash exhaust structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102275259A (en) | Flashing groove for sector gate mold | |
| CN111231231A (en) | Injection molding device of silica gel sealing member | |
| CN217777626U (en) | Injection mold capable of realizing rapid demolding | |
| CN204673926U (en) | Laddering pouring gate structure and injection mold | |
| CN206446051U (en) | An a kind of pipe injection molding channel structure | |
| CN102729405A (en) | Mold overflow groove | |
| CN203508941U (en) | Radiator mold | |
| CN202097903U (en) | Flash groove of mold with fan gate | |
| CN201346824Y (en) | Injection mold | |
| CN201105496Y (en) | Modified hot-sprue plug die | |
| CN202155999U (en) | Injection mould with submarine gates | |
| CN210061840U (en) | Zero runner mouth of a river mould of frame is glued to on-vehicle and industry control in a poor light | |
| CN111844639B (en) | High-precision injection mold | |
| CN209426086U (en) | No waste mine syringe injection mould | |
| CN207972233U (en) | A kind of equal tee injection mold | |
| CN208558134U (en) | A kind of novel WIFI socket mold | |
| CN207579006U (en) | A kind of pitched roof mechanism injection mold | |
| CN208484180U (en) | A kind of inclined ejector pin device for injection mold | |
| CN204725802U (en) | Automobile decoration piece mold cavity tunnel sliding block core-pulling mechanism | |
| CN209409152U (en) | Efficient injection forming mold | |
| CN205326134U (en) | Transfer mould of hydraulic press top sheave | |
| CN209176050U (en) | Wound packages gadget mold if a kind of independent mold insert | |
| CN210061816U (en) | Mould is used in duplicator lid preparation | |
| CN208290370U (en) | A kind of injection mold being avoided that ox horn glue mouth fracture | |
| CN208867456U (en) | A kind of precision die with accurate positioning function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111214 |