CN108381877A - Precision plastic rubber mold - Google Patents
Precision plastic rubber mold Download PDFInfo
- Publication number
- CN108381877A CN108381877A CN201810322185.6A CN201810322185A CN108381877A CN 108381877 A CN108381877 A CN 108381877A CN 201810322185 A CN201810322185 A CN 201810322185A CN 108381877 A CN108381877 A CN 108381877A
- Authority
- CN
- China
- Prior art keywords
- module
- plastic rubber
- rubber mold
- mold
- precision plastic
- 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
- 239000004033 plastic Substances 0.000 title claims abstract description 37
- 229920003023 plastic Polymers 0.000 title claims abstract description 37
- 238000002347 injection Methods 0.000 claims abstract description 22
- 239000007924 injection Substances 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 9
- 238000000465 moulding Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 108091006146 Channels Proteins 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 102000010637 Aquaporins Human genes 0.000 description 1
- 108010063290 Aquaporins Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76531—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76655—Location of control
- B29C2945/76732—Mould
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention discloses a kind of precision plastic rubber mold, the precision plastic rubber mold includes running gate system module, thermoregulating system module, injection module and forming module, the present invention provides a kind of precision plastic rubber mold, has the advantages of improving stability, safety and precision, greatly reducing rejection rate.
Description
Technical field
The present invention relates to a kind of precision plastic rubber molds.
Background technology
The mold technological equipment important as Modern Manufacturing Industry, plays an important role in the industrial production.Due to it at
Type speed is fast, precision is high, is suitable for complex parts and produces, is widely used in the every field such as machinery, automobile, light industry, electronics.Note
The technology height of mould is the pith of process industry level height, and injection mold includes：Cavity system, running gate system,
Humidity control system, ejection system, guiding and positioning system, core pulling and inclined pin structure etc..Science and education building blocks plastic mould is recycling
Under utilization, it is susceptible to breakage.And modern industrial production requires that mould and die accuracy height, long lifespan, yield is big, speed of production is fast, this
Stability and durability to mold propose new challenge.The mold that traditional handicraft makes, mold base and chipware are complete one
It is whole, once damage, stop work and production is repaired, schedule delays.Especially ejection system is as movable part, if being oriented to
It is bad, then it is frequently necessary to safeguard and replace, not only affect manufacturing schedule, but also improve maintenance cost.The mould that traditional handicraft makes
Tool cannot meet the needs of current automated production, it is necessary to innovate science and education building blocks plastic mould manufacturing process and structure to improve
It is molded the efficiency of production, to improve production capacity and cost-effective.
Invention content
The present invention provides one kind with yield rate is improved, and improves stability, safety and precision, greatly reduces useless
The precision plastic rubber mold of product rate advantage.
The technical scheme is that：A kind of precision plastic rubber mold, the precision plastic rubber mold include running gate system module,
Thermoregulating system module, injection module and forming module, the running gate system module connect the thermoregulating system module, the temperature adjustment
System module connects the injection module module, and the injection module connects the forming module, the running gate system module packet
Sprue, cold slug well, runner and cast gate are included, the thermoregulating system module includes several electrical heating elements, the forming module
Including dynamic model, cover half, the dynamic model and cover half are composed of several pieces.
In a preferred embodiment of the present invention, a diameter of 4-8mm of the sprue.
In a preferred embodiment of the present invention, a diameter of 8-10mm of the cold slug well, depth 6mm.
In a preferred embodiment of the present invention, the runner cross-sectional width is 2-8mm.
In a preferred embodiment of the present invention, the dynamic model depth 0.03-0.2mm, wide 1.5-6mm.
In a preferred embodiment of the present invention, the angle of the cover half is in 3 ° -5 °.
A kind of precision plastic rubber mold of the present invention has and improves stability, safety and precision, greatly reduces waste product
The advantages of rate.
Specific implementation mode
The preferred embodiments of the present invention will be described in detail below so that advantages and features of the invention can be easier to by
It will be appreciated by those skilled in the art that so as to make a clearer definition of the protection scope of the present invention.
Wherein, the precision plastic rubber mold includes running gate system module, thermoregulating system module, injection module and shaping mould
Block, the running gate system module connect the thermoregulating system module, and the thermoregulating system module connects the injection module module,
The injection module connects the forming module, and the running gate system module includes sprue, cold slug well, runner and cast gate,
The thermoregulating system module includes several electrical heating elements, and the forming module includes dynamic model, cover half, the dynamic model and cover half by
Several pieces are composed.
It further illustrates, a diameter of 4-8mm of the sprue, a diameter of 8-10mm of the cold slug well, depth is
6mm, the runner cross-sectional width are 2-8mm, the dynamic model depth 0.03-0.2mm, and the angle of wide 1.5-6mm, the cover half is in
3°-5°。
In further explanation, running gate system refer to plastics from nozzle enter cavity before runner section, including it is sprue, cold
Material cave, runner and cast gate etc..Running gate system is also known as flow passage system, it is to guide plastic melt into cavity by nozzle of injector
One group of feeding-passage, is usually made of sprue, runner, cast gate and cold slug well.It is directly related to the molding of plastic products
Quality and production efficiency.Sprue：It is that injection machine is connected in mold to one section of channel of runner or cavity.Sprue
Top is concave to be connected with nozzle.Sprue inlet diameter should be slightly bigger than nozzle diameter (0.8mm) to avoid flash, and prevent
What only the two occurred due to being connected inaccurate intercepts.Inlet diameter is depending on product size, generally 4-8mm.Sprue diameter
The angle in 3 ° to 5 ° should inwardly be expanded, so as to the demoulding of runner excrescence.Cold slug well：It is a sky for being located at sprue end
Cave, to trap generated cold burden between the double injection of nozzle end, to prevent the blocking of runner or cast gate.If cold
Material is then easy for generating internal stress in made product once being mixed into cavity.The diameter of cold slug well about 8-10mm, depth 6mm.For
Convenient for demoulding, bottom often undertakes by knockout pin.The top of knockout pin is preferably designed to tortuous hook-type or sets sunken groove, so as to
Sprue excrescence can be smoothly pulled out when demoulding.Runner：It is the channel that sprue and each cavity are connected in gang of cavities.To make
Melt is full of each cavity with uniform velocity, and arrangement of the runner in mold should be at symmetrical and equidistantly distribute.Runner section
Shape and size all have an impact the difficulty or ease of the flowing of plastic melt, article removal and mold manufacturing.If by equal doses
For flowing, then with the flow passage resistance force of waterproof of circular cross-section minimum.But because the specific surface of cylindrical flow is small, to the cold of runner excrescence
Unfavorable, and this runner must be opened on two-half die, not only taken a lot of work but also be not easy to be aligned.Therefore, often using ladder
The runner of shape or semi-circular cross-section, and be opened on the half mold with knockout pin.Water passage surface must be polished to reduce
Flow resistance provides faster filling mold speed.The size of runner is decided by plastics variety, the size and thickness of product.To most of
For thermoplastic, runner cross-sectional width is no more than 8mm, especially big reachable 10-12mm, special small 2-3mm.Meeting
Sectional area should be minimized under the premise of needing, to increase runner excrescence and extend cooling time.Cast gate：It is to turn on mainstream
The channel of road (or runner) and cavity.The sectional area in channel can be equal with sprue (or runner), but is usually all contracting
Small.So it is the minimum part of entire flow passage system middle section product.The shape and size of cast gate influence very quality of item
Greatly.The effect of cast gate is：A, stream speed is controlled：B, it can prevent from flowing backwards due to the melt for being stored in this part early coagulates in injection：
C, make by melt increased temperature by stronger shearing, to reduce apparent viscosity to improve mobility：D, it is convenient for system
Product are detached with flow passage system.Property, the size of product and the structure of gate shape, size and the design of position depending on plastics.
The cross sectional shape of general cast gate is rectangle or circle, and sectional area is preferably small and length is preferably short, this is based not only on above-mentioned effect, and also because
Become larger for small cast gate and is easier to, and big cast gate diminution is then highly difficult.It is most thick and do not influence that gate location should generally be selected in product
The place of appearance.The design of gate size should be taken into account the property of plastic melt.Cavity it be die for molding plastic products
Space.It is referred to as forming part as the component for constituting cavity.Every shaping part often has individual calling.Constitute product shape
Forming part is known as cavity plate (also known as former), and constitute product interior shape (such as hole, slot) is known as core or punch-pin (also known as sun
Mould).The performance according to plastics, the geometry of product, dimensional tolerance and requirement are first had to when designing forming part come really
The overall structure of sizing chamber.Followed by according to the position and demoulding side of determining structure choice die joint, cast gate and gas vent
Formula.Combination between design and determining each part last then that carry out each part by control product size.Plastic melt enters
With very high pressure when cavity, therefore forming part will carry out reasonably selection and the check of strength and stiffness.To ensure plastics
The bright and clean beautiful and easy demoulding of product surface, all surfaces with plastic contacts, roughness Ra>0.32um, and want corrosion resistant
Erosion.Forming part generally all improves hardness by being heat-treated, and corrosion resistant steel is selected to manufacture.Thermoregulating system module：For
Meet requirement of the injection technique to mold temperature, needs thermoregulating system the temperature of mold is adjusted.For thermoplasticity
Plastics injection mould, mainly designing cooling system makes mold cool down.Mold cooling common method be opened up in mold it is cold
But aquaporin takes away the heat of mold using the cooling water circulated；The heating of mold is removed using cooling-water duct hot water
Or outside steam, can also mould inside and around install electrical heating elements.Temperature each point in injection mold is uneven, also and notes
The time point penetrated in the period is related.It is constant between 2min and 2max that the effect of die heater is just to maintain temperature, that is to say, that anti-
Only temperature difference fluctuates above and below production process or gap.Several control methods below are suitable for controlling the temperature of mold:Control
Fluid temperature (F.T.) is most common method, and control accuracy can meet majority of case requirement.Use this control method, display
It is not consistent in the temperature and mold temperature of controller；The temperature fluctuation of mold is quite big, because the hot factor for influencing mold does not have
There are the change for directly measuring and compensating that these factors include injection cycle, injection speed, fusion temperature and room temperature.Secondly it is exactly mould
Tool temperature directly controls.This method is to fill temperature sensor in mould inside, this compares in mold temperature control accuracy requirement
It can just be used in the case of height.Mold temperature control main feature include：The temperature of controller setting is consistent with mold temperature；
Influencing the hot factor of mold directly can measure and compensate.Under normal conditions, the stability ratio of mold temperature is by controlling fluid
Temperature is more preferable.In addition, repeatability of the mold temperature control in production process control is preferably.Third is to jointly control.Joint control
System is the synthesis of the above method, it can control the temperature of fluid and mold simultaneously.In jointly controlling, temperature sensor is in mold
In position it is of crucial importance, place temperature sensor when, it is necessary to consider the position of shape, structure and cooling duct.In addition, temperature
Sensor should be placed on the place to play a decisive role to moulding quality.One or more die heaters are connected to injection molding machine control
There are many approach on device processed.Digital interface is preferred from operability, reliability and anti-interference consideration.The thermal balance of injection mold
The heat transfer of control injection molding machine and mold is the key that production moulding.Mould inside, by plastics（Such as thermoplastic）It brings
Heat by radiant heat transfer to the steel of material and mold, by convection current to heat-conducting fluid.In addition, heat passes through heat
Radiation is passed to air and mould bases.It is taken away by die heater by the heat that heat-conducting fluid absorbs.The thermal balance of mold can be by
It is described as：P=Pm-Ps.P is the heat that die heater is taken away in formula；Pm is the heat that plastics introduce；Ps is that mold is dispersed into air
Heat.It controls in the influence Shooting Technique of the purpose and mold temperature of mold temperature to moulding, controls the master of mold temperature
The one of syllabus is that mold is heated to operating temperature, and two to be to maintain mold temperature constant in operating temperature.Above 2 points do at
If work(, circulation time can be optimized, and then ensure the high quality that moulding is stablized.Mold temperature can influence surface matter
Amount, mobility, shrinking percentage, the several respects such as injection cycle and deformation.Mold temperature is excessively high or insufficient to different material meeting bands
Carry out different influences.For thermoplastic, mold temperature is high a little would generally to improve surface quality and mobility, but can prolong
Long cooling time and injection cycle.Mold temperature is lower to reduce the contraction in mold, but can increase moulding after demoulding
Shrinking percentage.And for thermosetting plastics, the high mold temperature of any would generally reduce circulation time, and the time is cold by part
But it is determined the time required to.In addition, in the processing of plastic cement, the high mold temperature of any can also reduce fusion time, reduce cycle
Number.The present invention provides a kind of precision plastic rubber mold, has and improves stability, safety and precision, greatly reduces waste product
The advantages of rate.
The specific implementation mode of the present invention, but scope of protection of the present invention is not limited thereto, any to be familiar with this field
Within the technical scope disclosed by the invention, changes or substitutions that can be made without creative work should all be contained technical staff
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be to protect model defined by claims
Subject to enclosing.
Claims (6)
1. a kind of precision plastic rubber mold, it is characterised in that：The precision plastic rubber mold includes running gate system module, thermoregulating system mould
Block, injection module and forming module, the running gate system module connect the thermoregulating system module, and the thermoregulating system module connects
Connect the injection module module, the injection module connects the forming module, and the running gate system module includes sprue, cold
Material cave, runner and cast gate, the thermoregulating system module include several electrical heating elements, and the forming module includes dynamic model, determines
Mould, the dynamic model and cover half are composed of several pieces.
2. precision plastic rubber mold according to claim 1, it is characterised in that：A diameter of 4-8mm of the sprue.
3. precision plastic rubber mold according to claim 1, it is characterised in that：A diameter of 8-10mm of the cold slug well is deep
Degree is 6mm.
4. precision plastic rubber mold according to claim 1, it is characterised in that：The runner cross-sectional width is 2-8mm.
5. precision plastic rubber mold according to claim 1, it is characterised in that：The dynamic model depth 0.03-0.2mm, wide 1.5-
6mm。
6. precision plastic rubber mold according to claim 1, it is characterised in that：The angle of the cover half is in 3 ° -5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810322185.6A CN108381877A (en) | 2018-04-11 | 2018-04-11 | Precision plastic rubber mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810322185.6A CN108381877A (en) | 2018-04-11 | 2018-04-11 | Precision plastic rubber mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108381877A true CN108381877A (en) | 2018-08-10 |
Family
ID=63073859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810322185.6A Pending CN108381877A (en) | 2018-04-11 | 2018-04-11 | Precision plastic rubber mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108381877A (en) |
-
2018
- 2018-04-11 CN CN201810322185.6A patent/CN108381877A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 刘峥等: "《塑料成型工艺及模具》", 30 November 2013, 重庆大学出版社 * |
| 申开智: "《塑料成型模具》", 31 January 2015, 中国轻工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111086153B (en) | Automobile thick-wall automobile logo and injection molding process | |
| KR101824486B1 (en) | 3D rapid heating and cooling structures and the method of the mold | |
| CN105172080A (en) | Cooling control device and method for injection mold | |
| CN103496125B (en) | A kind of die sinking method of tee T mould | |
| CN105799124A (en) | Cold runner device of liquid silicon rubber injection mold | |
| CN104626469B (en) | A kind of Intelligent temperature control type thin wall type injection mold | |
| CN107457963A (en) | A kind of injection mold of conveniently regulating and controlling temperature | |
| CN109483818A (en) | A kind of phone housing injection molded method | |
| CN210791883U (en) | Hot runner injection mold of casing under control by temperature change | |
| CN108381877A (en) | Precision plastic rubber mold | |
| CN218462889U (en) | Cooling water channel of injection mold | |
| CN206201372U (en) | Injection forming mold | |
| CN207983855U (en) | A kind of super thick plastic cement products based on injection molding | |
| CN106042310B (en) | A kind of high-accuracy high-efficiency rate injection mold | |
| CN113910560A (en) | Injection mold and application thereof | |
| CN211566783U (en) | Mold insert is with shape structure of preapring for an unfavorable turn of events among injection mold | |
| Čechmánek et al. | A structural design of the injection mould | |
| CN105397988A (en) | Temperature-controllable injection mold | |
| KR101996342B1 (en) | Temperature adjusting apparatus for plastic injection mold | |
| CN112123702A (en) | Rapid thermal cycle injection mold for transparent part and processing method thereof | |
| CN205818381U (en) | A kind of high-accuracy high-efficiency rate injection mold | |
| CN205044082U (en) | Shell injection mold before TV set | |
| CN220760970U (en) | Zinc alloy hot runner multi-point feeding die casting die | |
| CN108819050A (en) | A kind of mold production technology for applying special-shaped water route 3D printing | |
| CN210590286U (en) | One-out-four-mold structure of 32AH storage battery shell hot runner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180810 |