CN209240404U - A kind of degradable PLA injection mold - Google Patents
A kind of degradable PLA injection mold Download PDFInfo
- Publication number
- CN209240404U CN209240404U CN201821786201.9U CN201821786201U CN209240404U CN 209240404 U CN209240404 U CN 209240404U CN 201821786201 U CN201821786201 U CN 201821786201U CN 209240404 U CN209240404 U CN 209240404U
- Authority
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- China
- Prior art keywords
- cover half
- hole location
- dynamic model
- convex platform
- hole
- 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.)
- Expired - Fee Related
Links
- 238000002347 injection Methods 0.000 title claims abstract description 15
- 239000007924 injection Substances 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000009826 distribution Methods 0.000 claims abstract description 8
- 238000007493 shaping process Methods 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000001746 injection moulding Methods 0.000 claims abstract description 6
- 238000005266 casting Methods 0.000 claims abstract description 4
- 239000007787 solid Substances 0.000 claims abstract description 4
- 238000007599 discharging Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 16
- 229920000747 poly(lactic acid) Polymers 0.000 description 23
- 239000004626 polylactic acid Substances 0.000 description 21
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 239000003292 glue Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005491 wire drawing Methods 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000052 poly(p-xylylene) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model relates to mould applications, more particularly to a kind of degradable PLA injection mold, including rack, power mechanism in rack, shaping mechanism, transport water dispenser structure and heating mechanism, the shaping mechanism is from top to bottom followed successively by moving template, dynamic model backing plate, dynamic model, cover half and solid plate, the moving template upper end offers the sprue gate for being connected to injection molding machine discharge port, cover half mold insert is provided on the cover half, the cover half, cover half mold insert and dynamic model three form more than one closed forming cavity for output product, each forming cavity upper end be connected to there are two for casting hot mouth, two hot mouth upper ends are connected to a flow distribution plate, the flow distribution plate is connected with the sprue gate, equipped with the pneumatic jack for product ejection in the cover half mold insert and dynamic model, the pneumatic jack of two sides is oppositely arranged, each forming cavity is most Small thickness is all larger than 0.4 millimeter.The injection molding that the utility model is applied to PLA material produces.
Description
Technical field
The utility model relates to mould applications, and in particular to a kind of degradable PLA injection mold.
Background technique
Polylactic acid (also referred to as polylactide, English name polylactide, English abbreviation PLA), belongs to polyester family,
It is the polymer obtained with lactic acid for main polymerizable raw material, raw material sources are abundant and can regenerate, and have good biology drop
Performance and environmentally friendly feature are solved, therefore is ideal Green Polymer Material.Polylactic acid can be kept stable at normal temperature, tool
There is good mechanical performance, ultimately biodegradable Cheng Shui and carbon dioxide, free from environmental pollution under composting conditions.With polylactic acid come generation
It is to reduce pollution for plastics, one of protection environment most efficient method.But the processing performance of polylactic acid is poor, as the applying date is
The Chinese patent CN207915923U on December 29th, 2017 discloses a kind of novel PLA particular manufacturing craft, and it discloses one kind to answer
For the mold basic structure of PLA material, including, dynamic model and cover half are provided with power mechanism, reverse limit machine on the rack
Structure, shaping mechanism and heating mechanism；And the specific structure of each mechanism is specifically disclosed, but be still unable to satisfy PLA material when in use
Expect the requirement of injection molding, product defect rate is high.
Utility model content
Therefore, in view of the above-mentioned problems, the utility model provides a kind of degradable PLA injection mould of output good product quality
Tool.
In order to achieve the above objectives, the utility model is achieved through the following technical solutions:
A kind of degradable PLA injection mold, power mechanism, shaping mechanism, fortune water dispenser structure including rack, in rack
And heating mechanism, the shaping mechanism are from top to bottom followed successively by moving template, dynamic model backing plate, dynamic model, cover half and solid plate, institute
It states moving template upper end and offers sprue gate for being connected to injection molding machine discharge port, be provided with cover half mold insert, institute on the cover half
It states cover half, cover half mold insert and dynamic model three and forms more than one closed forming cavity for output product, on each forming cavity
End is connected to there are two the hot mouth for casting, and two hot mouth upper ends are connected to a flow distribution plate, the flow distribution plate and the sprue gate phase
Connection, equipped with the pneumatic jack for product ejection in the cover half mold insert and dynamic model, the pneumatic jack of two sides is oppositely arranged, respectively at
The minimum thickness of type chamber is all larger than 0.4 millimeter.
Preferably, the fortune water dispenser structure is integrally embedded in the cover half and cover half mold insert, under the cover half mold insert
End offers cold cut chamber, and the cold cut chamber is located at the lower section of the hot mouth discharge end, and the fortune water dispenser structure includes being threaded through
The complex root cold cut vertical tube that complex root in the cover half forms the fortune water lines of water circulation and is connected in fortune water lines, institute
Cold cut vertical tube is stated to match in the cold cut chamber and with the shape of the cold cut chamber.
Preferably, discharging one end end of the hot mouth is provided with a columned vertical section, vertical section lower end setting cone
The discharging mouthpiece of mesa-shaped.
Preferably, equipped with the parallel block for adjusting the two contact distance in the contact surface of the cover half and dynamic model.
Preferably, the pneumatic jack includes shell and spool, and four-part form stepped hole, the spool are provided in the shell
Be threaded through in the stepped hole, the aperture of the stepped hole is gradually increased from the bottom to top, respectively the first hole location, the second hole location,
Third hole location and the 4th hole location, the setting of spool both ends end are respectively arranged with convex platform and lower convex platform, the lower convex platform and the
The aperture of one hole location seals cooperation, and the convex platform upper end is equipped with cushion block, and through-hole is arranged in the cushion block center, the cushion block
The aperture of diameter and the 4th hole location, which seals, to be cooperated, the convex platform in the third hole location and with the third hole
Position clearance fit, the spool outer sheath are equipped with spring, and the spring is in the 4th hole location, upper and lower ends difference
It is resisted against on the lower end edge of the convex platform and the side wall of the first hole location and the second hole location junction.
Preferably, the convex platform is strip structure, and width is less than the aperture of the through-hole.
Preferably, the height of the convex platform is consistent with the height of the third hole location.
Preferably, plural item is uniformly provided with along the pad positioned at one end end face that the cushion block is contacted with the convex platform
The radially-arranged air discharge duct of block.
By using preceding solution, the beneficial effects of the utility model are: the utility model is directed to PLA material pair
Mold is redesigned, and it is all one with traditional thin-walled mould that each independent forming cavity, which is equipped with two hot mouths and is poured,
Click through that glue is different, the shortcomings that for PLA material poor fluidity, can preventing walking in forming process, glue is uneven, guarantees production
Feasibility；It is defined for the wall thickness of product, since the fat melting of PLA material is low, poor fluidity, limits the minimum of forming cavity
Thickness need to be greater than 0.4 millimeter, save material under the premise of guaranteeing production；It is arranged in cover half mold insert and cold cut chamber is set, it should
Position is located at PLA material into glue point, and the wave point after can preventing hot mouth from discharging adheres on mold, improves the quality of product；To heat
The discharge end of mouth is redesigned, and the wire drawing problem of production can be prevented compared with traditional hot mouth is sharp-tongued by adding a vertical section；
Parallel block is set, the thickness of parallel block can be changed, according to demand to solve exhausting problem when production；Weight is carried out to pneumatic jack
The problem of newly designing, avoiding previous pneumatic jack leak adhesive, while standard component is mostly used, easy to produce and replacement.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of the utility model embodiment；
Fig. 2 is the decomposition texture schematic diagram of the utility model embodiment；
Fig. 3 is the structural schematic diagram that the utility model embodiment transports water lines and cold cut vertical tube；
Fig. 4 is partial enlarged view at A in Fig. 1.
Fig. 5 is the structural schematic diagram of the utility model embodiment cover half mold insert；
Fig. 6 is the structural schematic diagram of the utility model embodiment pneumatic jack；
Fig. 7 is another structural schematic diagram of the utility model embodiment pneumatic jack.
Specific embodiment
The embodiments of the present invention is described in detail below with reference to specific embodiment, whereby such as to the utility model
What applied technology method solves technical problem, and the realization process for reaching technical effect can be fully understood and implemented.
Embodiment
Referring to Figure 1 and Figure 2, a kind of degradable PLA injection mold, power mechanism, molding including rack, in rack
Mechanism, fortune water dispenser structure and heating mechanism, the shaping mechanism be from top to bottom followed successively by moving template 1, dynamic model backing plate 2, dynamic model 3,
Cover half 4 and solid plate 5,1 upper end of moving template offers the sprue gate 11 for being connected to injection molding machine discharge port, described fixed
Cover half mold insert 6 is provided on mould 4, the cover half 4, cover half mold insert 6 and 3 three of dynamic model form one for the close of output product
The forming cavity 7 closed, each 7 upper end of forming cavity are connected to there are two the hot mouth 8 for casting, and two hot mouths, 8 upper end is connected to a flow distribution plate
21, the flow distribution plate 21 is connected with the sprue gate 11, equipped with for product in the cover half mold insert 6 and dynamic model 3
The pneumatic jack 9 of the pneumatic jack 9 of ejection, two sides is oppositely arranged, and the minimum thickness of each forming cavity 7 is all larger than 0.4 millimeter.
With reference to Fig. 3, in the present embodiment, the fortune water dispenser structure is integrally embedded in the cover half 4 and cover half mold insert 6, institute
The lower end for stating cover half mold insert 6 offers cold cut chamber 61, and the cold cut chamber 61 is located at the lower section of 8 discharge end of hot mouth, institute
Stating fortune water dispenser structure includes that the complex root being threaded through in the cover half 4 forms the fortune water lines 41 of water circulation and is connected to fortune water pipe
Complex root cold cut vertical tube 42 on road 41, the cold cut vertical tube 42 in the cold cut chamber 61 and with the cold cut chamber
61 shape matches.Improved fortune water dispenser structure, can guarantee transport water flow velocity it is fast, cold cut radiation uniformly, cold cut vertical tube 42 close to
8 discharge port position of hot mouth, prevents wire drawing problem.
Meanwhile in the present embodiment, discharging one end end of the hot mouth 8 is provided with a columned vertical section 81, vertically
Pyramidal discharging mouthpiece 82 is arranged in 81 lower ends of section.Traditional 8 discharge end of hot mouth is all pyramidal, and adds vertical section 81,
The stroke of material can be increased in the amount of 8 outlet end of hot mouth increasing material to a certain degree, and then reduce material to a certain extent
Temperature realizes the purpose for avoiding that wire drawing phenomenon is generated in production.
In the present embodiment, the cover half 4 contacts the parallel of distance equipped with for adjusting the two in the contact surface of dynamic model 3
Block 43.
With reference to Fig. 4, in the present embodiment, the pneumatic jack 9 includes 91 shells and spool 92, is provided in the shell 91
Four-part form stepped hole 93, the spool 92 are threaded through in the stepped hole 93, and the aperture of the stepped hole 93 is from the bottom to top gradually
Increase, respectively the first hole location 931, the second hole location 932, third hole location 933 and the 4th hole location 934,92 both ends end of spool
Setting is respectively arranged with convex platform 921 and lower convex platform 922, and the aperture sealing of the lower convex platform 922 and the first hole location 931 cooperates,
921 upper end of convex platform is equipped with cushion block 94, and through-hole 941, the diameter of the cushion block 94 and institute is arranged in 94 center of cushion block
State the aperture sealing cooperation of the 4th hole location 934, the convex platform 921 in the third hole location 933 and with the third
933 clearance fit of hole location, 92 outer sheath of spool are equipped with spring 95, and the spring 95 is embedded in the 4th hole location 934,
Its upper and lower ends is born against in 932 junction of lower end edge and the first hole location 931 and the second hole location of the convex platform 921
On side wall.Cushion block 94 is set, spool 92 can be made to keep vertical state, reduces the shaking in 92 operational process of spool, Jin Erbao
It demonstrate,proves lower convex platform 922 and reduces abrasion, improve service life；Through-hole 941, which is arranged, simultaneously can be discharged to a certain extent as stepped hole
Air in 93.
In the present embodiment, the convex platform 921 is strip structure, and width is less than the aperture of the through-hole 941.The structure
Make between convex platform 921 and through-hole 941 that there are gaps, provides bigger exhaust channel.
In the present embodiment, the height of the convex platform 921 is consistent with the height of the third hole location 933.This makes
Boss 921 can remain with the cushion block 94 and contact that the two moves synchronously, and the spool 92 when resetting is avoided to generate shaking.
While as shown in figure 5, it will can be located at one end end face that the cushion block 94 is contacted with the convex platform 921 according to demand
Plural item is uniformly provided with along the radially-arranged air discharge duct 942 of the cushion block.Setting air discharge duct 942 can further improve exhaust
Efficiency avoids the case where accumulation gas causes operation to have some setbacks or reset not in time in stepped hole 93 generation；Wherein, the air discharge duct
942 can set according to demand, and four or more.
Power mechanism described in the utility model, heating mechanism are all well-known technique, are being not shown in the figure or shown partially.
The utility model can increase the number of forming cavity 7 by taking a forming cavity 7 as an example according to demand.
The utility model redesigns mold for PLA material, and each independent forming cavity is equipped with two heat
Mouth is poured, and is all 1 point different into glue from traditional thin-walled mould, the shortcomings that for PLA material poor fluidity, can be prevented into
Glue is uneven for walking during type, guarantees the feasibility of production；It is defined for the wall thickness of product, it is molten due to PLA material
Rouge is low, poor fluidity, and the minimum thickness for limiting forming cavity need to be greater than 0.4 millimeter, save material under the premise of guaranteeing production；If
The setting cold cut chamber in cover half mold insert is set, which is located at wave point adhesion of the PLA material into glue point, after can preventing hot mouth from discharging
Onto mold, the quality of product is improved；The discharge end of hot mouth is redesigned, a vertical section and traditional Hot nozzle are added
Point is compared to the wire drawing problem that can prevent production；Parallel block is set, the thickness of parallel block can be changed according to demand, it is raw to solve product
Exhausting problem when production；The problem of pneumatic jack is redesigned, previous pneumatic jack leak adhesive is avoided, while standard component is mostly used,
Easy to produce and replacement.
Although specifically showing and describing the utility model in conjunction with preferred embodiment, those skilled in the art is answered
This is understood, in the spirit and scope for not departing from the utility model defined by the appended claims, in form and details
On the utility model can be made a variety of changes, be the protection scope of the utility model.
Claims (8)
1. a kind of degradable PLA injection mold, power mechanism, shaping mechanism, fortune water dispenser structure including rack, in rack with
And heating mechanism, it is characterised in that: the shaping mechanism be from top to bottom followed successively by moving template, dynamic model backing plate, dynamic model, cover half and
Solid plate, the moving template upper end offer the sprue gate for being connected to injection molding machine discharge port, and it is fixed to be provided on the cover half
Mould mold insert, the cover half, cover half mold insert and dynamic model three form more than one closed forming cavity for output product, respectively
Forming cavity upper end be connected to there are two for casting hot mouth, two hot mouth upper ends be connected to a flow distribution plate, the flow distribution plate with it is described
Sprue gate is connected, and equipped with the pneumatic jack for product ejection in the cover half mold insert and dynamic model, the pneumatic jack of two sides is opposite
Setting, the minimum thickness of each forming cavity are all larger than 0.4 millimeter.
2. degradable PLA injection mold according to claim 1, it is characterised in that: the fortune water dispenser structure is integrally embedded in
In the cover half and cover half mold insert, the lower end of the cover half mold insert offers cold cut chamber, and the cold cut chamber is located at described
The lower section of hot mouth discharge end, the fortune water dispenser structure include that the complex root being threaded through in the cover half forms the fortune water lines of water circulation
And be connected to the complex root cold cut vertical tube in fortune water lines, the cold cut vertical tube in the cold cut chamber and with it is described
The shape of cold cut chamber matches.
3. degradable PLA injection mold according to claim 2, it is characterised in that: discharging one end end of the hot mouth
It is provided with a columned vertical section, pyramidal discharging mouthpiece is arranged in vertical section lower end.
4. degradable PLA injection mold according to claim 3, it is characterised in that: the contact surface of the cover half and dynamic model
The interior parallel block equipped with for adjusting the two contact distance.
5. degradable PLA injection mold described in any one of -4 claims according to claim 1, it is characterised in that: described
Pneumatic jack includes shell and spool, and four-part form stepped hole is provided in the shell, and the spool is threaded through in the stepped hole,
The aperture of the stepped hole is gradually increased from the bottom to top, respectively the first hole location, the second hole location, third hole location and the 4th hole
Position, the setting of spool both ends end are respectively arranged with convex platform and lower convex platform, and the lower convex platform and the aperture sealing of the first hole location are matched
It closes, the convex platform upper end is equipped with cushion block, and through-hole, the diameter of the cushion block and the 4th hole location is arranged in the cushion block center
Aperture seal cooperation, the convex platform in the third hole location and with the third hole location clearance fit, the valve
Core outer sheath is equipped with spring, and in the 4th hole location, upper and lower ends are born against in the convex platform spring
Lower end edge and the first hole location and the second hole location junction side wall on.
6. degradable PLA injection mold according to claim 5, it is characterised in that: the convex platform is strip structure,
Width is less than the aperture of the through-hole.
7. degradable PLA injection mold according to claim 6, it is characterised in that: the height of the convex platform with it is described
The height of third hole location is consistent.
8. degradable PLA injection mold according to claim 7, it is characterised in that: be located at the cushion block with it is described convex
One end end face of platform contact is uniformly provided with plural item along the radially-arranged air discharge duct of the cushion block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821786201.9U CN209240404U (en) | 2018-10-31 | 2018-10-31 | A kind of degradable PLA injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821786201.9U CN209240404U (en) | 2018-10-31 | 2018-10-31 | A kind of degradable PLA injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209240404U true CN209240404U (en) | 2019-08-13 |
Family
ID=67526649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821786201.9U Expired - Fee Related CN209240404U (en) | 2018-10-31 | 2018-10-31 | A kind of degradable PLA injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209240404U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109228176A (en) * | 2018-10-31 | 2019-01-18 | 晋江嘉豪模具有限公司 | A kind of degradable PLA injection mold |
-
2018
- 2018-10-31 CN CN201821786201.9U patent/CN209240404U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109228176A (en) * | 2018-10-31 | 2019-01-18 | 晋江嘉豪模具有限公司 | A kind of degradable PLA injection mold |
| CN109228176B (en) * | 2018-10-31 | 2024-05-28 | 晋江市嘉豪模具股份有限公司 | Degradable PLA injection mold |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190813 |