CN107186944A - A kind of PU foaming moulds - Google Patents
A kind of PU foaming moulds Download PDFInfo
- Publication number
- CN107186944A CN107186944A CN201710470301.4A CN201710470301A CN107186944A CN 107186944 A CN107186944 A CN 107186944A CN 201710470301 A CN201710470301 A CN 201710470301A CN 107186944 A CN107186944 A CN 107186944A
- Authority
- CN
- China
- Prior art keywords
- sandbox
- casting box
- general casting
- foaming moulds
- polyurethane
- 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
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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/58—Moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention provides a kind of PU foaming moulds, and the mould includes mo(u)ld top half mould, and the mo(u)ld top half mould includes polyurethane models, general casting box, the first sandbox, the second sandbox and pressing plate；The polyurethane models are located in the general casting box；The general casting box is located in first sandbox, is provided with the outside of first sandbox and first sandbox is connected vacuumizes hole；Second sandbox is located at the top of first sandbox, is provided with the outside of second sandbox and second sandbox is connected vacuumizes hole；The pressing plate is located at the top edge of the general casting box, and pushes down the general casting box and polyurethane models simultaneously, and the general casting box is founding aluminium case, and the general casting box is integrated or Split type structure.The present invention can strengthen the intensity of polyurethane models, reduce the deflection of sand mold, improve casting accuracy.
Description
Technical field
The present invention relates to mould applications, more particularly to a kind of PU foaming moulds.
Background technology
Consumption with market after Chinese automobile articles for use is persistently increased, and automobile seat cushion is also main as car owners
The consumer goods.It is particularly important according to a set of comfortable, the practical automobile seat cushion of Season select.PU automobile cushions have comfortable, soft
Toughness, durability and not rapid wear, shape-designing are free, eliminate pressure spot, promote blood in human body in no instance
It can be oppressed.
Polyurethane material is the current best insulation material of performance in the world.Polyurethane foam plastics application is very wide
It is general, almost penetrate into each department of national economy, especially the departments such as furniture, bed accessory, transport, refrigeration, building, thermal insulation use ten
Divide universal, it has also become one of indispensable material.As one of most wide kind of application in plastics.Soft polyurethane foam master
To be applied to furniture, bed accessory and other household wares, such as sofa and seat, backing cushion, mattress and pillow；Hard polyurethane foam is mainly used
In adiabatic heat-insulation, refrigerating equipment and freezer, heat-insulating plate, wall thermal insulating, pipe insulation, the thermal insulation of storage tank, one pack system bubble
Foam pointing etc..
Existing PU foaming moulds, polyurethane models are positioned in common sandbox by it, during founding is vacuumized,
Pressure can cause polyurethane models to be easily deformed, it is therefore desirable to produce very thick polyurethane models outer wall, but this thick
Polyurethane models outer wall not only results in the waste of material, and also results in when being vacuumized the damage of polyurethane models
It is bad, so as to influence the making of sand mold.Also, common sandbox is used, in molding, the percussions of polyurethane models is also resulted in poly-
The damage of urethane model.
Therefore, it is necessary to provide a kind of new technical scheme.
The content of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of PU foaming moulds, and it can strengthen the strong of polyurethane models
Degree, reduces the deflection of sand mold, improves casting accuracy.
In order to solve the above-mentioned technical problem, the invention provides a kind of PU foaming moulds, the mould includes mo(u)ld top half mould,
The mo(u)ld top half mould includes polyurethane models, general casting box, the first sandbox, the second sandbox and pressing plate；
The polyurethane models are located in the general casting box；
The general casting box is located in first sandbox, is provided with the outside of first sandbox and first sand
What case was connected vacuumizes hole；
Second sandbox, which is located on the outside of the top of first sandbox, second sandbox, to be provided with and described second
What sandbox was connected vacuumizes hole；
The pressing plate is located at the top edge of the general casting box, and pushes down the general casting box and polyurethane mould simultaneously
Type,
The general casting box is founding aluminium case, and the general casting box is integrated or Split type structure.
Further, the polyurethane models outer wall fits in the inwall of the general casting box.
Further, the general casting box is structure as a whole, and the general casting box includes holding tank and flange, described to turn over
While stretching out from the edge of the holding tank, the edge of the flange is set up in the top edge of first sandbox.
Further, multiple suspension ring are provided with the flange.
Further, the general casting box is Split type structure, and the general casting box includes kerve and above kerve
Convex bucket, the two-port connection of convex bucket, the convex bucket has connecting portion and turn-up portion, the lower end of the connecting portion
Mouthful edge and the kerve are fixedly connected to form the holding tank for accommodating the polyurethane models, and the turn-up portion is from the connecting portion
Upper port edge stretch out, the edge of the turn-up portion is set up in the top edge of first sandbox.
Further, multiple suspension ring are provided with the turn-up portion.
Further, second sandbox for barrel-like structure, the two-port of the second sandbox of the barrel-like structure is connected.
Further, second sandbox is correspondingly arranged with first sandbox, and the thickness of second sandbox is equal to institute
State the thickness of the first sandbox.
Further, the general casting box is set up in first sandbox.
Further, flush of the upper surface of the general casting box and polyurethane models with the pressing plate.
A kind of PU foaming moulds of the present invention, have the advantages that：
(1) PU foaming moulds of the invention, it avoids the damage of pressure to polyurethane models when vacuumizing of common sandbox；
(2) PU foaming moulds of the invention, to poly- ammonia when it avoids molding using the general founding aluminium case of polyurethane models
The percussion of ester model, increases polyurethane models service life.
(3) PU foaming moulds of the invention, it uses general founding aluminium case increase polyurethane models intensity, reduces sand mold
Deflection, improves casting accuracy.
(4) PU foaming moulds of the invention, one circle designs 4 suspension ring, and convenient lifting mitigates the work of workman's sand loading case
Intensity, improves production efficiency.
Brief description of the drawings
, below will be to required in embodiment or description of the prior art in order to illustrate more clearly of technical scheme
The accompanying drawing used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, right
For those of ordinary skill in the art, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings
Its accompanying drawing.
Fig. 1 (a) is the structural representation of the mo(u)ld bottom half mould of the PU foaming moulds of the present invention；
Lower molding sand made from Fig. 1 (b) Fig. 1 (a) mo(u)ld bottom half mould；
Fig. 2 (a) is the structural representation of the mo(u)ld top half mould of the PU foaming moulds of the present invention in one embodiment；
Fig. 2 (b) is the structural representation of the mo(u)ld top half mould of the PU foaming moulds of the present invention in another embodiment；
Fig. 2 (c) is upper molding sand made from Fig. 2 (a) mo(u)ld top half mould；
Fig. 3 is Fig. 2 (a) schematic top plan view；
Fig. 4 is the structural representation that upper sand mold and lower sand mold prepare cast product.
Wherein, sand mold under 10- mo(u)ld bottom halves mould, 101- mo(u)ld bottom half sandboxes, 102- loading plates, 103- models, 104-, 1041- is horizontal
Sprue channel open, 105- cross gates, 1011- vacuumizes hole, 20- mo(u)ld top half moulds, 201- polyurethane models, the general casting boxs of 202-,
2021- flange, the sandboxes of 203- first, the sandboxes of 204- second, 205- pressing plates, 206- vacuumizes hole, the upper sand molds of 207-, 208- plastics
Film, 2071- dead heads, 209- suspension ring, 210- casting, 2022- turn-up portions, 2023- kerves, 2024- convexs bucket.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art obtained on the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
Fig. 1 (a) is referred to, Fig. 1 (a) is the structural representation of the mo(u)ld bottom half mould of the PU foaming moulds of the present invention.Such as Fig. 1
(a) shown in, a kind of PU foaming moulds of the invention, the mould include mo(u)ld bottom half mould 10, the mo(u)ld bottom half mould include sandbox 101,
Loading plate 102 and model 103.
The sandbox 101 is located on the loading plate 102, and is provided with the sandbox 101 and vacuumizes hole 1011, described
Sandbox 101 and the loading plate 102 are detachably connectable；
The model 103 is located on the loading plate 102, and the model 103 is located in the sandbox 101, the mould
Type 103 is polyurethane models, and the polyurethane models are formed in one structure.
The model 103 is fixed on the loading plate 102.By taking out loading plate 102 so as to by polyurethane models band
Go out.
There is gap between the model 103 and the sandbox 101, and the surrounding of the sandbox 101 is higher than the model
103.Gap between the model 103 and the sandbox 101 is filled with lower molding sand 104.
In one embodiment, it is described to vacuumize the side that hole 1011 is arranged at the sandbox 101.
The quantity at least two for vacuumizing hole 1011, this at least two vacuumize hole 1011 be uniformly arranged on it is described
The side of sandbox 101.
The edge of the loading plate 102 is protruded around the sandbox 101.
The sandbox 101 is tubbiness, and the two ends of the tubbiness are connected.
The hole 1011 that vacuumizes is close to the top of the sandbox 101.
Fig. 2 (a), Fig. 2 (b) and Fig. 3 are referred to, Fig. 2 (a) is the mo(u)ld top half mould of the PU foaming moulds of the present invention in a reality
Apply the structural representation in example；Fig. 2 (b) is the structure of the mo(u)ld top half mould of the PU foaming moulds of the present invention in another embodiment
Schematic diagram, Fig. 3 is Fig. 2 schematic top plan view.As shown in Fig. 2 (a) and Fig. 3, PU foaming moulds of the present invention, the mould includes upper
Pattern tool 20, the mo(u)ld top half mould 20 includes polyurethane models 201, general casting box 202, the first sandbox 203, the second sandbox
204 and pressing plate 205.
The polyurethane models 201 are located in the general casting box 202.
The general casting box 202 is located in first sandbox 203, the outside of first sandbox 203 be provided with
What first sandbox 203 was connected vacuumizes hole 206.
Second sandbox 204 is located at the top of first sandbox 203, and the outside of second sandbox 204 is provided with
With second sandbox 204 is connected vacuumizes hole 206.
The pressing plate 205 is located at the top edge of the general casting box 202, and pushes down the general casting box 202 simultaneously
With polyurethane models 201.
The general casting box 202 is founding aluminium case.
The outer wall of polyurethane models 201 fits in the inwall of the general casting box 202.
Fig. 2 (a) is referred to, in this embodiment, the general casting box 202 is structure as a whole, the general casting box 202
Including holding tank and flange 2021, the edge of flange 2021 from the holding tank stretches out, the side of the flange 2021
Edge is set up in the top edge of first sandbox.
Multiple suspension ring 209 are provided with the flange 2021.It is preferred that, suspension ring are 4, convenient lifting.
Fig. 2 (b) is referred to, Fig. 2 (b) is the knot of the mo(u)ld top half mould of the PU foaming moulds of the present invention in another embodiment
Structure schematic diagram.In this embodiment, the general casting box 202 is Split type structure, and the general casting box 202 includes kerve 2023
And the convex bucket 2024 positioned at the top of kerve 2023.The kerve is fixedly connected with convex bucket by connector.The convex bucket
Two-port connection, convex bucket has connecting portion and turn-up portion 2022, lower port edge and the bottom of the connecting portion
Groove 2023 is fixedly connected to form the holding tank for accommodating the polyurethane models, and the turn-up portion 2022 is from the upper end of the connecting portion
Mouth edge stretches out, and the edge of the turn-up portion 2022 is set up in the top edge of first sandbox.
Multiple suspension ring are provided with the turn-up portion 2022.
In one embodiment, second sandbox 204 for barrel-like structure, the second sandbox 204 of the barrel-like structure
Two-port is connected.
Second sandbox 204 is correspondingly arranged with first sandbox 203, and the thickness of second sandbox is equal to described the
The thickness of one sandbox.
The general casting box 202 is set up in first sandbox 203.
Flush of the upper surface of the general casting box 202 and polyurethane models 201 with the pressing plate 205.
Installation process please continue to refer to the mo(u)ld bottom half mould 20 of Fig. 2 (a) PU foaming moulds of the present invention is as follows：
Polyurethane models 201 are put into general founding aluminium case 202, clamping platen 205；Polyurethane models 201 will be installed
Overall sling of general founding aluminium case 202 be placed into the first sandbox 203, vacuumize, plastic covering film 208, spray to cast part is applied
Material；The second sandbox 204 is covered, the upper sub- ram-jolt of bumper back-up sand obtains lower sand mold 207, and the lower top of sand mold 207 covers one layer of modeling again
Expect film (not shown)；By lift by the jack-up of the second sandbox 205, general founding aluminium case 202 can be more square in the presence of deadweight
Just separate mo(u)ld top half and polyurethane models 201.
Fig. 1 (a) to Fig. 4 is referred to, Fig. 1 (a) is the structural representation of the mo(u)ld bottom half mould of the PU foaming moulds of the present invention；Figure
Lower molding sand made from 1 (b) Fig. 1 (a) mo(u)ld bottom half mould；Fig. 2 (a) is the mo(u)ld top half mould of the PU foaming moulds of the present invention in a reality
Apply the structural representation in example；Fig. 2 (c) is upper molding sand made from Fig. 2 (a) mo(u)ld top half mould；Fig. 3 illustrates for Fig. 2 (a) vertical view
Figure.Fig. 4 is the structural representation that upper sand mold and lower sand mold prepare cast product.The casting manufacturing process of the present invention is as follows：
S1, refer to Fig. 1 (a)：Polyurethane models 103 are fixed on loading plate 102, vacuum plant is opened, covering adds
The plastic sheeting (not shown) that thermal softening is crossed, makes film and polyurethane models 103 closely coupled, and casting is sprayed on film and is applied
Material；Mo(u)ld bottom half sandbox 101 is placed on the surrounding of polyurethane models 103, will on bumper in the built-in back-up sand of mo(u)ld bottom half sandbox 101
Sand ram-jolt obtains lower sand mold 104, and the lower top of sand mold 104 covers layer of plastic film (not shown) again.
S2, refer to Fig. 2 (a)：Polyurethane models 201 are put into general founding aluminium case 202, clamping platen 205；It will install
Overall sling of the general founding aluminium case 202 of good polyurethane models 201 is placed into the first sandbox 203, is vacuumized, in polyurethane mould
Plastic sheeting 208 is covered in type 201 and general founding aluminium case 202, foundry facing is sprayed on film；The second sandbox 204 is covered,
Back-up sand in second sandbox 204, by sand ram-jolt to upper sand mold 207 on bumper, one is covered at the upper top of sand mold 207 again
Layer plastic sheeting (not shown)；
S3, refer to Fig. 1 (b)：By lift by the jack-up of mo(u)ld bottom half sandbox 101, polyurethane models 103 are taken out, then by under
The turn-over of sand mold 104, mo(u)ld bottom half makes and finished.
S4, refer to Fig. 2 (c)：By lift by the jack-up of the second sandbox 204, effect of the general founding aluminium case 202 in deadweight
Under separate more easily sand mold 207 and polyurethane models 201, mo(u)ld top half completes.
S5, refer to Fig. 4：Mo(u)ld top half and mo(u)ld bottom half are all produced, and mo(u)ld top half is put into above mo(u)ld bottom half, then pass through dead head
Poured into a mould with cross gate mouthful.Sand mold is persistently vacuumized in casting process；After cooling, vacuum tube is removed, it is directly that sand is same without vibrations
Casting is fallen.
A kind of PU foaming moulds of the present invention, have the advantages that：
(1) PU foaming moulds of the invention, it avoids the damage of pressure to polyurethane models when vacuumizing of common sandbox；
(2) PU foaming moulds of the invention, to poly- ammonia when it avoids molding using the general founding aluminium case of polyurethane models
The percussion of ester model, increases polyurethane models service life.
(3) PU foaming moulds of the invention, it uses general founding aluminium case increase polyurethane models intensity, reduces sand mold
Deflection, improves casting accuracy.
(4) PU foaming moulds of the invention, one circle designs 4 suspension ring, and convenient lifting mitigates the work of workman's sand loading case
Intensity, improves production efficiency.
Described above has fully disclosed the embodiment of the present invention.It is pointed out that being familiar with the field
Scope of any change that technical staff is done to the embodiment of the present invention all without departing from claims of the present invention.
Correspondingly, the scope of claim of the invention is also not limited only to previous embodiment.
Claims (10)
1. a kind of PU foaming moulds, it is characterised in that：The mould includes mo(u)ld top half mould (20), and the mo(u)ld top half mould includes poly- ammonia
Ester model (201), general casting box (202), the first sandbox (203), the second sandbox (204) and pressing plate (205)；
The polyurethane models (201) are located in the general casting box (202)；
The general casting box (202) is located in first sandbox (203), is provided with the outside of first sandbox (203)
With first sandbox (203) connects vacuumizes hole (206)；
Second sandbox (204) is located at the top of first sandbox (203), and the outside of second sandbox (204) is set
Have and second sandbox (204) connects vacuumizes hole (206)；
The pressing plate (205) is located at the top edge of the general casting box (202), and pushes down the general casting box simultaneously
(202) and polyurethane models (201),
The general casting box (202) is founding aluminium case, and the general casting box (202) is integrated or Split type structure.
2. PU foaming moulds according to claim 1, it is characterised in that：Polyurethane models (201) outer wall is fitted in
The inwall of the general casting box (202).
3. PU foaming moulds according to claim 2, it is characterised in that：The general casting box (202) is structure as a whole,
The general casting box includes holding tank and flange (2021), and the flange (2021) stretches out from the edge of the holding tank,
The edge of the flange (2021) is set up in the top edge of first sandbox (203).
4. PU foaming moulds according to claim 3, it is characterised in that：Multiple hang is provided with the flange (2021)
Ring.
5. PU foaming moulds according to claim 2, it is characterised in that：The general casting box (202) is Split type structure,
The general casting box (202) includes kerve (2023) and the convex bucket (2024) above kerve (2023), the convex bucket
(2024) two-port connection, the convex bucket (2024) has connecting portion and turn-up portion (2022), the lower end of the connecting portion
Mouth edge is fixedly connected to form the holding tank for accommodating the polyurethane models, the turn-up portion (2022) with the kerve (2023)
Stretch out from the upper port edge of the connecting portion, the edge of the turn-up portion (2022) is set up in first sandbox
(203) top edge.
6. PU foaming moulds according to claim 5, it is characterised in that：Multiple hang is provided with the turn-up portion (2022)
Ring.
7. PU foaming moulds according to claim 1, it is characterised in that：Second sandbox (204) for barrel-like structure,
The two-port of second sandbox of the barrel-like structure is connected.
8. PU foaming moulds according to claim 7, it is characterised in that：Second sandbox (204) and first sand
Case (203) is correspondingly arranged, and the thickness of second sandbox (204) is equal to the thickness of first sandbox (203).
9. PU foaming moulds according to claim 1, it is characterised in that：The general casting box is set up in first sand
In case.
10. PU foaming moulds according to claim 1, it is characterised in that：The general casting box (202) and polyurethane mould
Flush of the upper surface of type (201) with the pressing plate (205).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710470301.4A CN107186944A (en) | 2017-06-20 | 2017-06-20 | A kind of PU foaming moulds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710470301.4A CN107186944A (en) | 2017-06-20 | 2017-06-20 | A kind of PU foaming moulds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107186944A true CN107186944A (en) | 2017-09-22 |
Family
ID=59879579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710470301.4A Pending CN107186944A (en) | 2017-06-20 | 2017-06-20 | A kind of PU foaming moulds |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107186944A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115319021A (en) * | 2022-06-27 | 2022-11-11 | 日月重工股份有限公司 | Method for producing large steel casting through 3D printing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059308A (en) * | 1990-08-28 | 1992-03-11 | 曹继宗 | Utilize the method for styrofoam craft articles |
| CN1701874A (en) * | 2005-06-07 | 2005-11-30 | 如皋市超达模具配套有限公司 | Vacuum negative pressure casting process of foam die casting piece |
| CN104959552A (en) * | 2015-07-03 | 2015-10-07 | 刘天平 | Positioning structure and positioning method for casting castings |
-
2017
- 2017-06-20 CN CN201710470301.4A patent/CN107186944A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059308A (en) * | 1990-08-28 | 1992-03-11 | 曹继宗 | Utilize the method for styrofoam craft articles |
| CN1701874A (en) * | 2005-06-07 | 2005-11-30 | 如皋市超达模具配套有限公司 | Vacuum negative pressure casting process of foam die casting piece |
| CN104959552A (en) * | 2015-07-03 | 2015-10-07 | 刘天平 | Positioning structure and positioning method for casting castings |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115319021A (en) * | 2022-06-27 | 2022-11-11 | 日月重工股份有限公司 | Method for producing large steel casting through 3D printing |
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Application publication date: 20170922 |