CN207207000U - Plastic mould and its 3D printing mould air-permeable member - Google Patents
Plastic mould and its 3D printing mould air-permeable member Download PDFInfo
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- CN207207000U CN207207000U CN201721065924.5U CN201721065924U CN207207000U CN 207207000 U CN207207000 U CN 207207000U CN 201721065924 U CN201721065924 U CN 201721065924U CN 207207000 U CN207207000 U CN 207207000U
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Abstract
The utility model belongs to technical field of mold, more particularly to a kind of plastic mould and its 3D printing mould air-permeable member, 3D printing mould air-permeable member includes installing plate and ventilation part, the air-vent of the side end face for being communicated to the installing plate and top end face is offered on the installing plate, the cross sectional shape of the ventilation part is adapted with the cross sectional shape of the air-vent, the ventilation part is in the air-vent and the top end face of the ventilation part flushes with the top end face of the installing plate, the ventilation part is integrally formed with the installing plate by metal dust by 3D printing, and if the air-vent described in form capable person on the ventilation part is communicated to mesopore outside the air-vent during ventilation part described in 3D printing.3D of the present utility model can play a part of exhaust when being applied on mould, and overall structure is formed in one, simple in construction, cheap, and overlap is not present in the product after injection molding, additionally it is possible to the effectively quality of lifting product.
Description
Technical field
The utility model belongs to technical field of mold, more particularly to a kind of plastic mould and its 3D printing mould air-permeable member.
Background technology
Plastic mould is the near closed hollow ring surrounded by metal parts, when filling plastic cement to cavity injection, in die cavity
Air discharged by the die joint at edge, but at die cavity dead angle, and when " the first plastic cement stream a " and " the second modeling two bursts in Fig. 1
Glue stream b " is met, and when fusion occurs together, its internal easily generation trapped gas phenomenon, air molecule c can not be discharged, will lacked on product
Few one piece of plastic cement, cause the mass defect problem of product starved.When this problem occurring in the past, one is typically done at this trapped gas has
The mold insert or thimble of scavenging action etc. structure, or make an expensive ventilative steel mold insert.And so do rule
Problems with can occur：1st, the mass defect of mold insert clamp overlap flaw can be produced in product surface；2nd, its mold cooling water is made
Road can not be arranged, cause mould superheating phenomenon to influence normal production；3rd, the multiple mold inserts of mosaic cause mould structure more complicated.
Utility model content
The purpose of this utility model is to provide a kind of plastic mould and its 3D printing mould air-permeable member, it is intended to solves existing
The air-permeable member being applied on mould in technology is complicated and expensive technical problem.
To achieve the above object, the technical solution adopted in the utility model is：A kind of 3D printing mould air-permeable member, including peace
Loading board and ventilation part, the air-vent of the side end face for being communicated to the installing plate and top end face is offered on the installing plate, it is described
The cross sectional shape of ventilation part is adapted with the cross sectional shape of the air-vent, and the ventilation part is in the air-vent and described
The top end face of ventilation part flushes with the top end face of the installing plate, and the ventilation part passes through 3D with the installing plate by metal dust
Printing integrated shaping, and if described in 3D printing during ventilation part the air-vent described in form capable person on the ventilation part be communicated to it is described
Mesopore outside air-vent.
Preferably, the laser power described in 3D printing during ventilation part less than described in 3D printing during installing plate laser power with
And the sweep speed described in 3D printing during ventilation part is more than the sweep speed described in 3D printing during installing plate.
Preferably, the aperture of each mesopore is 7~10 μm.
Preferably, the top end face of the top end face of the ventilation part and the installing plate is formed by surface grinding does not have
There is the smooth surface of mosaic line.
Preferably, the air-vent has several, and each air-vent spacing side by side is set, the quantity of the ventilation part
It is identical with the quantity of the air-vent.
Preferably, the sidepiece of the installing plate is provided with the positioning step for being easy to the installing plate installation.
Preferably, the installing plate includes installation portion and location division, and the installation portion is fixed on the location division, and institute
State and the positioning step is formed between the bottom face of installation portion and the top end face of the location division, the air-vent is located at the peace
In dress portion, and the air-vent is communicated to side end face and the top end face of the installation portion.
The beneficial effects of the utility model：3D printing mould air-permeable member of the present utility model, beaten by metal dust by 3D
Ventilation part and installing plate are integrally formed by the mode of print, if so can be in 3D printing in formation capable person's air-vent on ventilation part
The mesopore being communicated to outside air-vent, and the region for being provided with ventilation part may be set in 3D printing mould air-permeable member
The trapped gas region specified, in this way, in specifically used 3D printing mould air-permeable member, the trapped gas region is due to being provided with gap
The ventilation part in hole is so as to foring ventilation area, then exhaust can be played a part of when it is applied on mould, and it is overall
Structure is formed in one, simple in construction, cheap, and overlap is not present in the product after injection molding, additionally it is possible to effectively lifting
The quality of product.
The technical solution adopted in the utility model is：A kind of plastic mould, it includes above-mentioned 3D printing mould air-permeable member.
Plastic mould of the present utility model, there is above-mentioned 3D printing mould air-permeable member due to using, then be not only able to make
Plastic mould at work can normal exhaust, it is cheap, it is simple in construction, and because 3D printing mould air-permeable member is integrally tied
Structure is formed in one, then so that overlap is not present in the product after plastic mould injection molding, effectively lifts the quality of product.
Brief description of the drawings
, below will be to embodiment or prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
The required accompanying drawing used is briefly described in description, it should be apparent that, drawings in the following description are only that this practicality is new
Some embodiments of type, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the trapped gas schematic diagram for the product that the plastic mould of prior art is molded by.
Fig. 2 is the dimensional structure diagram for the 3D printing mould air-permeable member that the utility model embodiment provides.
Fig. 3 is the perspective structure schematic diagram for the 3D printing mould air-permeable member that the utility model embodiment provides.
Fig. 4 is the structural representation of the ventilation area for the 3D printing mould air-permeable member that the utility model embodiment provides.
Fig. 5 is the structural representation of the normal region for the 3D printing mould air-permeable member that the utility model embodiment provides.
Wherein, each reference in figure：
The plastic cement stream plastic cement of b-second streams of a-first c-air molecule
10-installing plate, 11-installation portion, 12-location division
20-ventilation part, 21-mesopore, 30-metal grain
111-air-vent, 121-positioning step.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining the description of accompanying drawing 2~5 is exemplary, it is intended to for explaining the utility model, and it is not intended that to this practicality
New limitation.
In description of the present utility model, it is to be understood that term " length ", " width ", " on ", " under ", " preceding ",
The orientation or position relationship of the instruction such as " rear ", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer " are based on attached
Orientation or position relationship shown in figure, it is for only for ease of and describes the utility model and simplify to describe, rather than instruction or hint
Signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this
The limitation of utility model.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include one or more this feature.In description of the present utility model, " multiple " are meant that two or two
More than, unless otherwise specifically defined.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be
Mechanically connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be two
The connection of element internal or the interaction relationship of two elements.For the ordinary skill in the art, can basis
Concrete condition understands concrete meaning of the above-mentioned term in the utility model.
As shown in figs. 2 to 4, the utility model embodiment provides a kind of 3D printing mould air-permeable member, including installing plate 10
With ventilation part 20, the air-vent 111 of the side end face for being communicated to the installing plate 10 and top end face is offered on the installing plate 10,
The cross sectional shape of the ventilation part 20 is adapted with the cross sectional shape of the air-vent 111, and the ventilation part 20 is located at described
In stomata 111 and the top end face of the ventilation part 20 flushes with the top end face of the installing plate 10, the ventilation part 20 with it is described
Installing plate 10 is integrally formed by metal dust by 3D printing, and described in 3D printing during ventilation part 20 in shape on the ventilation part 20
If it is communicated to the mesopore 21 outside the air-vent 111 into air-vent described in capable person 111.
Specifically, the 3D printing mould air-permeable member of the utility model embodiment, by metal dust by way of 3D printing
Ventilation part 20 and installing plate 10 are integrally formed, if so can be in 3D printing in formation capable person's air-vent on ventilation part 20
111 are communicated to the mesopore 21 outside air-vent 111, and the region for being provided with ventilation part 20 may be set in 3D printing mould
The trapped gas region specified in tool air-permeable member, in this way, in specifically used 3D printing mould air-permeable member, the trapped gas region is due to setting
There is the ventilation part 20 with mesopore 21 to form ventilation area, then can play exhaust when it is applied on mould
Effect, and overall structure is formed in one, simple in construction, cheap, and overlap is not present in the product after injection molding, also
The quality of product can effectively be lifted.
In the present embodiment, the laser power described in 3D printing during ventilation part 20 is less than swashing during installing plate 10 described in 3D printing
Sweep speed described in luminous power and 3D printing during ventilation part 20 is more than the sweep speed described in 3D printing during installing plate 10.Tool
Body, in the 3D printing mould air-permeable member of 3D printing embodiment, by adjusting laser power and sweep speed with 3D printing
A kind of loose porous region is printed in mould air-permeable member, its internal all directions is uniformly covered with small steam vent, the steam vent
As mesopore 21, the ventilation part 20 of such structure not only possesses venting capability, while can keep high-strength needed for injection mold
Degree, high rigidity and corrosion resistance.
Wherein, 3D printing is metal 3D printing, and metal 3D printing is rapid shaping technique, and it is one kind with mathematical model
Based on file, with metal dust (powdery metal) etc. can jointing material, pass through successively selective metal laser fusion burn
The mode for forming type printing constructs the technology of metal object, and these sections print sintering and come out together layer by layer, so as to manufacturing
Go out an entity.Modeling part often is used directly in fields such as Making mold, industrial designs, wherein, 1, laser sintered
It is sintering solid powder is selectively layered using laser, and the cured layer of sinter molding is layering shape needed for generation
Part.Its whole technical process includes foundation and data processing, powdering, sintering and post processing of CAD model etc..2nd, whole work
Process and equipment is made up of powder cylinder and moulding cylinder, and powder cylinder piston (powder feeding piston) rises during work, is being molded powder by scraper
The raw material powder of uniform layer overlay very thin (micron order) on platform, then under computer according to the sharp of prototype hierarchical model
Light beam, with certain speed and energy density two-dimensional scan track, is scanned by scanner by the 2-D data in layering face.Laser
Scanned powder just sinters certain thickness entity lamella into, after sintering solid dusty material forms an aspect of part,
Working piston declines a thickness, and powdering system spreads new powder controls laser beam and scans the new layer of sintering again.So move in circles,
It is layering, until 3 d part is molded.Finally, and molding part is taken out, part can be obtained by removing excessive powder, will be un-sintered
Powder Recovery into powder cylinder.The principle that it is sintered using metallic powder material under laser irradiation, is controlled in computer
Under selectively sintered according to interface profile information, layer upon layer shaping.Laser sintered parameter：1st, hierarchy parameters are as being layered
Thickness, part machine direction, sweep span etc..2nd, forming and sintering parameter includes sweep speed, laser power, powder type, paving
Powder thickness.
Further, the material that metal parts direct sintering technique uses is pure metal dust, is the laser used
The energy makes its thawing, realizes the accumulation of lamination to metal dust direct sintering.It uses the laser with relatively high power, with
The direct fusing of metal dust during guarantee direct sintering.The selection of laser parameter, reaches in the short period of time in sintering
Melting temperature is, it is necessary to very powerful laser.In sintering process, the time of laser chronic exposure on metal powder granulates is very
Short, generally between (0.5~25) ms, the fusing and solidification of powder particle were completed in moment, were followed in so of short duration heat
Under ring, quick bonding can only be typically formed by way of the VISCOUS FLOW of powder particle or fusing, will be produced in metal
The height phenomenon of portion's consistency, inside just produces larger clearance part when density is low, can breathe freely.
Further, the ventilative principle of metal 3D printing workpiece：By the designated area to workpiece, laser power one is reduced
Fixed number value and accelerate sweep speed certain numerical value, prevent the metal dust of laser sintered position from the fusing point of material is fully achieved,
Help to be vented so as to produce the band tiny holes for not being completely melt to be just freezing together.This Workpiece structure in the ventilation area is not close
Real, insecure zonule is present, and matches somebody with somebody with the dense region on side and synthesizes a part.
In the present embodiment, the aperture of each mesopore 21 is 7~10 μm.Specifically, the aperture of each mesopore 21 can be with
For 7 μm, 8 μm, 9 μm or 10 μm etc., the mesopore 21 of the numerical aperture, which is molded on ventilation part 20, can not only realize exhaust
Function, and can also cause ventilation part 20 keep injection mold needed for high intensity, high rigidity and corrosion resistance.Such as Fig. 4~5
It is shown, and installing plate 10 is printed using normal laser power and sweep speed, the metal of the installing plate 10 so printed is brilliant
Gap is very small between grain 30, passes through not air molecule c；And laser power when being printed in 3D printing ventilation body by changing
And sweep speed, change the fusing and solidification of powder particle, sintering process causes the gap of metal grain 30 to become big, and hole increases
Add, this creates the terminal ventilation area.
In the present embodiment, the top end face of the top end face of the ventilation part 20 and the installing plate 10 passes through surface grinding
Form the smooth surface without mosaic line.Wherein, form the ventilation part 20 of ventilation area and installing plate 10 be it is integral, i.e., thoroughly
There is no clamp between gas portion 20 and installing plate 10, so the flaw of product generation overlap will not be caused.Specifically, smooth surface leads to
The top end face and the top end face of installing plate 10 for crossing grinding ventilation part 20 are formed, the 3D printing mould air-permeable member being thusly-formed it is whole
Top end face unusual light is smooth, and naked eyes can't see ventilation area and mosaic line be present completely, would not so cause what injection was completed
Product surface clamp overlap flaw problem.
In the present embodiment, as shown in figures 2-3, the air-vent 111 has several, and each air-vent 111 side by side between
Every setting, the quantity of the ventilation part 20 is identical with the quantity of the air-vent 111.Specifically, it is saturating according to the 3D printing mould
Gas part needs the situation for the plastic mould applied, and can select to set several air-vents 111, then be correspondingly also required to set
The quantity identical ventilation part 20 of quantity and air-vent 111 is easy to each air-vent 111 and cooperatively forms ventilation area.Air-vent 111
Quantity can be four or six etc., and each air-vent 111 be arranged side by side can be advantageous to it is saturating to 3D printing mould
The manufacturing of gas part.
In the present embodiment, as shown in figures 2-3, the sidepiece of the installing plate 10, which is provided with, is easy to what the installing plate 10 was installed
Positioning step 121.Specifically, the setting of positioning step 121 3D printing mould air-permeable member can be installed on plastic mould by when
Its effect positioned, it can so lift the installation rate to 3D printing mould air-permeable member；Also, 3D printing mould air-permeable member
Set position that can be corresponding with plastic mould to be formed the cooperation in the face of angle, so, by the diverse location and
Spacing effect can be played by forming the face of angle, be installed on so as to strengthen 3D printing mould air-permeable member in plastic mould
Stability and reliability.
In the present embodiment, as shown in figures 2-3, the installing plate 10 includes installation portion 11 and location division 12, the installation portion
11 are fixed on the location division 12, and institute is formed between the bottom face of the installation portion 11 and the top end face of the location division 12
Positioning step 121 is stated, the air-vent 111 is in the installation portion 11, and the air-vent 111 is communicated to the installation portion
11 side end face and top end face.Specifically, air-vent 111 is arranged on installation portion 11, will not carry out positioning peace in location division 12
Produce and influence each other during dress, that is to say, that the setting of positioning step 121 had not both interfered with the use of air-vent 111, and can also
Normal to play positioning and spacing effect, smart structural design is practical.
The utility model embodiment additionally provides a kind of plastic mould, and it includes above-mentioned 3D printing mould air-permeable member.Tool
Body, the plastic mould of the utility model embodiment, there is above-mentioned 3D printing mould air-permeable member due to using, then be not only able to
So that plastic mould at work can normal exhaust, it is cheap, it is simple in construction, and because 3D printing mould air-permeable member is overall
Structure is formed in one, then so that overlap is not present in the product after plastic mould injection molding, effectively lifts the quality of product.
In summary, 3D printing mould air-permeable member of the invention and with the 3D printing mould air-permeable member plastic mould extremely
Have the following advantages that less：
1st, mold injection molding and dwell time are reduced：It is vented excellent, quickening filling time, shortening molding cycle；
2nd, deformation and the warped of injection molding product are prevented：Inside is trapped in without gas, reduces deformation of products risk；
3rd, prevent injection moulding process trapped gas from can produce high temperature after compressing and burning glue phenomenon, improve product surface quality；
4th, solve situations such as exhaust problem, avoid using mold insert or other gas extraction system and caused overlap and other flaws
Defect；
5th, excellent exhaust can make because the more difficult formation problems such as cast gate off normal, irregular, the wall thin product of wall thickness are resolved and
Alleviate；
6th, burnt in the past caused by injection in gas and mold cavity caused by quick poly- pressure, current mark, lack material, air-breathing caused by
The defects of part deformation, can fully be solved；
7th, excellent exhaust improves shaping production efficiency, saves production cost, and air during injection in die cavity can pass through mould
Interior pore is quickly smoothly discharged, and injection pressure is minimized, and reduces injection machine power consumption；
Therefore, 3D printing mould air-permeable member, the injection trapped gas formed by gas are used in the appropriate location of injection mold
Problem, injection molding can be made more perfect with fully erased.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (8)
- A kind of 1. 3D printing mould air-permeable member, it is characterised in that：Including installing plate and ventilation part, the company of offering on the installing plate Pass to the side end face of the installing plate and the air-vent of top end face, the section of the cross sectional shape of the ventilation part and the air-vent Shape is adapted, and the ventilation part is located in the air-vent and the top end face of the top end face of the ventilation part and the installing plate Flushing, the ventilation part is integrally formed with the installing plate by metal dust by 3D printing, and described in 3D printing during ventilation part If the mesopore outside the air-vent is communicated in air-vent described in formation capable person on the ventilation part.
- 2. 3D printing mould air-permeable member according to claim 1, it is characterised in that：Laser described in 3D printing during ventilation part Power is beaten less than the sweep speed described in the laser power described in 3D printing during installing plate and 3D printing during ventilation part more than 3D Print the sweep speed during installing plate.
- 3. 3D printing mould air-permeable member according to claim 1, it is characterised in that：The aperture of each mesopore be 7~ 10μm。
- 4. 3D printing mould air-permeable member according to claim 1, it is characterised in that：The top end face of the ventilation part with it is described The top end face of installing plate forms the smooth surface without mosaic line by surface grinding.
- 5. the 3D printing mould air-permeable member according to any one of Claims 1 to 4, it is characterised in that：If the air-vent has Dry, and each air-vent spacing side by side is set, the quantity of the ventilation part is identical with the quantity of the air-vent.
- 6. the 3D printing mould air-permeable member according to any one of Claims 1 to 4, it is characterised in that：The side of the installing plate Portion is provided with the positioning step for being easy to the installing plate installation.
- 7. 3D printing mould air-permeable member according to claim 6, it is characterised in that：The installing plate includes installation portion and determined Position portion, the installation portion are fixed on the location division, and the top end face of the bottom face of the installation portion and the location division it Between form the positioning step, the air-vent is in the installation portion, and the air-vent is communicated to the installation portion Side end face and top end face.
- A kind of 8. plastic mould, it is characterised in that：Including the 3D printing mould air-permeable member described in any one of claim 1~7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721065924.5U CN207207000U (en) | 2017-08-23 | 2017-08-23 | Plastic mould and its 3D printing mould air-permeable member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721065924.5U CN207207000U (en) | 2017-08-23 | 2017-08-23 | Plastic mould and its 3D printing mould air-permeable member |
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| Publication Number | Publication Date |
|---|---|
| CN207207000U true CN207207000U (en) | 2018-04-10 |
Family
ID=61816623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201721065924.5U Active CN207207000U (en) | 2017-08-23 | 2017-08-23 | Plastic mould and its 3D printing mould air-permeable member |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108908866A (en) * | 2018-06-25 | 2018-11-30 | 深圳市锴诚精密模具有限公司 | A kind of exhaust thimble production technology and exhaust thimble |
| CN111036902A (en) * | 2019-12-13 | 2020-04-21 | 同济大学 | Porous forming method for selective laser additive manufacturing |
| CN114161663A (en) * | 2021-12-03 | 2022-03-11 | 湖南华曙高科技股份有限公司 | Mold ventilation structure, mold and mold manufacturing process |
-
2017
- 2017-08-23 CN CN201721065924.5U patent/CN207207000U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108908866A (en) * | 2018-06-25 | 2018-11-30 | 深圳市锴诚精密模具有限公司 | A kind of exhaust thimble production technology and exhaust thimble |
| CN108908866B (en) * | 2018-06-25 | 2023-12-26 | 深圳市锴诚精密模具有限公司 | Exhaust thimble production process and exhaust thimble |
| CN111036902A (en) * | 2019-12-13 | 2020-04-21 | 同济大学 | Porous forming method for selective laser additive manufacturing |
| CN111036902B (en) * | 2019-12-13 | 2021-09-03 | 同济大学 | Porous forming method for selective laser additive manufacturing |
| CN114161663A (en) * | 2021-12-03 | 2022-03-11 | 湖南华曙高科技股份有限公司 | Mold ventilation structure, mold and mold manufacturing process |
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