CN112776278A - Vacuumizing sealing device and vacuum injection mold - Google Patents
Vacuumizing sealing device and vacuum injection mold Download PDFInfo
- Publication number
- CN112776278A CN112776278A CN202110305233.2A CN202110305233A CN112776278A CN 112776278 A CN112776278 A CN 112776278A CN 202110305233 A CN202110305233 A CN 202110305233A CN 112776278 A CN112776278 A CN 112776278A
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- China
- Prior art keywords
- material supporting
- vacuum
- supporting rod
- injection mold
- groove
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- 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.)
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- 238000007789 sealing Methods 0.000 title claims abstract description 52
- 238000002347 injection Methods 0.000 title claims abstract description 28
- 239000007924 injection Substances 0.000 title claims abstract description 28
- 238000005086 pumping Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 87
- 238000001746 injection moulding Methods 0.000 claims description 5
- 239000003566 sealing material Substances 0.000 claims description 2
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
Images
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
- B29C45/34—Moulds having venting means
-
- 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
- B29C45/2608—Mould seals
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of injection molds and discloses a vacuumizing sealing device and a vacuum injection mold, wherein the purpose of quickly pumping gas out of a cavity to form negative pressure and form a closed environment is achieved The molded surface, the upper die and the sealing strip form a negative pressure space, so that the rejection rate of injection mold products is reduced.
Description
Technical Field
The invention belongs to the field of injection molds, and particularly relates to a vacuumizing sealing device and a vacuum injection mold.
Background
In recent years, the development of plastic molds in China is quite rapid, and at present, the plastic molds account for about 30% of the whole mold industry, but the demand of injection molds is the largest in the whole plastic mold market.
However, the current injection mold has many problems, the most serious is insufficient pressure in the cavity, firstly, the insufficient pressure can cause formation of vacuum bubbles, and under the action of rapid cooling of the mold, fuel at the corner of the cavity is drawn, so that volume loss is caused. The deformation, bending and distortion phenomena of the injection molding products are mainly caused by the fact that the shrinkage rate in the flowing direction is larger than that in the vertical direction during plastic molding, so that the products warp due to different shrinkage rates, and the warping is caused by the fact that large internal stress is inevitably left in the products during injection and mold filling, which are the expressions of deformation caused by the pressure in a cavity.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a vacuumizing sealing device and a vacuum injection mold.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
a vacuumizing sealing device and a vacuum injection mold comprise an upper mold, an injection molding opening, a cavity, a molded surface, a sealing groove, a sealing strip, a material supporting ring, a lower mold, a material supporting rod, an air suction hole, a pipeline, a vacuum valve, an ejector rod, a lifting frame, four interfaces, a material supporting ring groove and a connecting hole, wherein the sealing groove is dug on the surface of the lower mold, the sealing strip is arranged in the sealing groove, a hole groove is formed in the surface of the lower mold, the material supporting rod is arranged in the hole groove, the material supporting ring groove is dug at the upper end of the material supporting rod, the material supporting ring is arranged in the material supporting ring groove, the air suction hole is formed below the material supporting rod, the connecting hole is formed at the bottom of the material supporting rod, the bottom end of the material supporting rod is rigidly connected with the lifting frame, the bottom of the lifting frame is fixedly connected with the lower mold through the ejector rod, one end of the pipeline is connected, the surface of the lower die is rigidly connected with a molded surface, a cavity is formed in the molded surface, an upper die is placed above the lower die, an injection molding opening is formed in the top end of the upper die, and the cavity is formed in the bottom end of the upper die.
Preferably, the sealing groove is a closed ring encircling the entire profile.
Preferably, the aperture of the sealing strip is larger than that of the sealing groove.
Preferably, the material supporting rod is smaller than a material supporting rod mounting hole in the surface of the lower die.
Preferably, the material supporting rods are all hollow structures.
Preferably, the material supporting ring is made of elastic sealing materials.
Preferably, the upper end of the material supporting rod is in an oblique downward shape and is attached to the mounting hole of the material supporting rod.
Has the advantages that:
1. according to the vacuumizing sealing device and the vacuum injection mold, the lower mold moves downwards and the upper mold is attached, and the sealing strip arranged on the surface of the lower mold is extruded and filled with the whole sealing groove due to stress, so that the upper mold, the molded surface, the cavity and the sealing strip are sealed to form a closed space.
2. This evacuation sealing device and vacuum injection mold, through the upward movement jack-up of ejector pin play to rise the frame, rise to rise the frame and hold in the palm the material pole upward movement, until the extraction opening on the material pole of holding in the palm gets into the airtight space that forms before, the vacuum valve begins to operate and draws the air in the die cavity rapidly through the pipeline, and hold in the palm the material ring of material pole below and hold in the palm the material pole mounting hole and closely laminate and form airtight space, then the ejector pin moves down, ask the material pole return, and ask the oblique head and the material pole mounting hole wall of material pole upper end, die cavity, profile, go up mould and sealing strip and form the negative pressure space, with this rejection rate that reduces injection mold product.
Of course, it is not necessary for any one product that embodies the invention to achieve all of the above advantages simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the lower die of the present invention;
FIG. 3 is a front view of the lower die of the present invention;
FIG. 4 is a schematic view of a material holding rod according to the present invention;
FIG. 5 is a front view of the upper die of the present invention;
the reference numbers in the drawings are as follows:
1-upper die, 2-injection hole, 3-cavity, 4-profile, 5-sealing groove, 6-sealing strip, 7-material supporting ring, 8-lower die, 9-material supporting rod, 10-air pumping hole, 11-pipeline, 12-vacuum valve, 13-ejector rod, 14-lifting frame, 15-four interface, 16-material supporting ring groove and 17-connecting hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-5, the invention is a vacuum pumping sealing device and a vacuum injection mold, comprising an upper mold 1, an injection port 2, a cavity 3, a molding surface 4, a sealing groove 5, a sealing strip 6, a material supporting ring 7, a lower mold 8, a material supporting rod 9, an air suction hole 10, a pipeline 11, a vacuum valve 12, a push rod 13, a lifting frame 14, a four-port 15, a material supporting ring groove 16 and a connecting hole 17, wherein the surface of the lower mold 8 is provided with the sealing groove 5, the sealing groove 5 is provided with the sealing strip 6, the surface of the lower mold 8 is provided with the hole groove, the material supporting rod 9 is arranged in the hole groove, the upper end of the material supporting rod 9 is provided with the material supporting ring groove 16, the material supporting ring 7 is arranged in the material supporting ring groove 16, the air suction hole 10 is arranged below the material supporting rod 9, the bottom of the material supporting rod 9 is provided with the connecting hole 17, the bottom end of the material supporting rod 9 is, connecting hole 17 on the material pole 9 is held in the palm in the connection of the one end of pipeline 11, four interfaces 15 on vacuum valve 12 are connected to the other end of pipeline 11, and the surface rigid connection profile 4 of lower mould 8, the inside die cavity 3 that has seted up of profile, and mould 1 is placed to the top of lower mould 8, and the mouth 2 of moulding plastics is seted up on the top of going up mould 1, and mould 3 is seted up to the bottom of going up mould 1.
Wherein, seal groove 5 is for the closed ring that encircles whole profile, and the aperture of sealing strip 6 is greater than the aperture of seal groove 5, holds in the palm material pole 9 and is less than the material pole 9 mounting holes of the 8 surperficial support of lower mould, holds in the palm material pole 9 total 4 and inside and be hollow structure, holds in the palm the material ring 7 and is the airtight material of elasticity, holds in the palm the material pole 9 upper end and for the decurrent shape of slant and laminate with the mounting hole of holding in the palm material pole 9.
One specific application of this embodiment is: when the vacuum-pumping sealing device and the vacuum injection mould are used, the lower mould 8 is fixed, the upper mould 1 moves downwards until the lower mould 8 is jointed with the upper mould 1, the sealing strip 6 arranged in the sealing groove 5 on the surface of the lower mould 8 is elastically deformed by the extrusion force of the upper mould through the extrusion force of the upper mould 1 to the lower mould 8, and forms a closed space with the upper mould 1, the lower mould 8, the cavity 3 and the like, meanwhile, the ejector rod 13 starts to move upwards, the lifting frame 14 jacks the material supporting rod 9 upwards due to the upward force of the ejector rod until the air suction hole 10 at the upper end of the material supporting rod 9 appears in the cavity 3, and starts to extract the gas in the cavity 3 through the vacuum valve 12 through the connecting hole 17 connected with the material supporting rod 9, and forms a negative pressure space because the elasticity of the material supporting ring 7 below the air suction hole 10 is tightly jointed with the wall surface of the mounting hole of the material supporting rod 9, the ejector rod 13 moves downwards, the material supporting ring 7 of the material supporting rod 9 and the wall surface form a closed space, the injection molding hole 2 of the upper mold 1 starts to work at the moment, the material can be better attached to the cavity 3 due to the negative pressure in the cavity 3, finally the cooling ejector rod 13 moves upwards, and the material supporting rod 9 moves upwards to support the material lifting sheet.
In conclusion, according to the vacuum-pumping sealing device and the vacuum injection mold, the lower mold 1 moves downwards and the upper mold 8 is attached, and the sealing strip 6 arranged on the surface of the lower mold 8 is extruded and filled in the whole sealing groove 5 due to stress, so that the upper mold 8, the molded surface 4, the cavity 3 and the sealing strip 6 are sealed to form a closed space. The lifting frame 14 is jacked through the upward movement of the ejector rod 13, the lifting frame supports the material supporting rod 9 to move upwards until an air suction hole 10 in the material supporting rod 9 enters a closed space formed before, the vacuum valve 12 starts to operate to rapidly extract air in the cavity 3 through the pipeline 11, the material supporting ring 7 below the material supporting rod 9 is tightly attached to the material supporting rod mounting hole to form a closed space, then the ejector rod 13 moves downwards, the material supporting rod 9 returns to the original position, the material supporting ring 7 above the material supporting rod 9, the material supporting rod mounting hole wall, the cavity 3, the molded surface 4, the upper die 8 and the sealing strip 6 form a negative pressure space, and therefore the rejection rate of injection mold products is reduced.
The control mode of the heating electric wire 14, the heat dissipation exhaust fan 12, and the like electric elements is controlled by the PLC controller 19 matched with the heating electric wire, the control circuit can be realized by simple programming by a person skilled in the art, and the control circuit belongs to the common general knowledge in the art, is only used and is not improved, and the control mode and the circuit connection are not described in detail in the invention because the invention is mainly used for protecting a mechanical device.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments have not been described in detail to avoid obscuring the description of the invention in its specific form, and it is to be understood that many modifications and variations are possible in light of the teaching of this specification. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. The utility model provides an evacuation sealing device and vacuum injection mold, includes mould (1), mouth (2), die cavity (3), profile (4), seal groove (5), sealing strip (6), holds in the palm material ring (7), lower mould (8), holds in the palm material pole (9), aspirating hole (10), pipeline (11), vacuum valve (12), ejector pin (13), plays to rise frame (14), four interfaces (15), holds in the palm material annular (16), connecting hole (17), its characterized in that: the surface of the lower die (8) is dug with a sealing groove (5), a sealing strip (6) is arranged in the sealing groove (5), a hole groove is formed in the surface of the lower die (8), a material supporting rod (9) is arranged in the hole groove, a material supporting ring groove (16) is dug at the upper end of the material supporting rod (9), a material supporting ring (7) is arranged in the material supporting ring groove (16), an air suction hole (10) is formed below the material supporting rod (9), a connecting hole (17) is formed in the bottom of the material supporting rod (9), the bottom end of the material supporting rod (9) is rigidly connected with a lifting frame (14), the bottom of the lifting frame (14) is fixedly connected with the lower die through an ejector rod (13), one end of a pipeline (11) is connected with a connecting hole (17) on the material supporting rod (9), the other end of the pipeline (11) is connected with a four-port (15) on a vacuum valve (12), and the surface rigid connection molded surface (4) of the, a cavity (3) is formed in the molded surface, an upper die (1) is placed above the lower die (8), an injection molding opening (2) is formed in the top end of the upper die (1), and the cavity (3) is formed in the bottom end of the upper die (1).
2. The vacuum-pumping sealing device and the vacuum injection mold as claimed in claim 1, wherein: the sealing groove (5) is a closed ring surrounding the whole molded surface.
3. The vacuum-pumping sealing device and the vacuum injection mold as claimed in claim 1, wherein: the aperture of the sealing strip (6) is larger than that of the sealing groove (5).
4. The vacuum-pumping sealing device and the vacuum injection mold as claimed in claim 1, wherein: the material supporting rod (9) is smaller than a mounting hole of the material supporting rod (9) on the surface of the lower die (8).
5. The vacuum-pumping sealing device and the vacuum injection mold as claimed in claim 1, wherein: the material supporting rods (9) are 4 in number and are all of hollow structures inside.
6. The vacuum-pumping sealing device and the vacuum injection mold as claimed in claim 1, wherein: the material supporting ring (7) is made of elastic sealing materials.
7. The vacuum-pumping sealing device and the vacuum injection mold as claimed in claim 1, wherein: the upper end of the material supporting rod (9) is in a downward inclined shape and is attached to the mounting hole of the material supporting rod (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110305233.2A CN112776278A (en) | 2021-03-18 | 2021-03-18 | Vacuumizing sealing device and vacuum injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110305233.2A CN112776278A (en) | 2021-03-18 | 2021-03-18 | Vacuumizing sealing device and vacuum injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112776278A true CN112776278A (en) | 2021-05-11 |
Family
ID=75762845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110305233.2A Pending CN112776278A (en) | 2021-03-18 | 2021-03-18 | Vacuumizing sealing device and vacuum injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112776278A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114193717A (en) * | 2022-02-17 | 2022-03-18 | 广东腾业科技有限公司 | Injection mold and injection method for daily chemical product packaging bottle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202480334U (en) * | 2012-04-01 | 2012-10-10 | 浙江浦江敏锐精密机械科技有限公司 | Mould chamber of mould vacuum-pumping system |
| CN208681975U (en) * | 2018-07-17 | 2019-04-02 | 广东烨嘉光电科技股份有限公司 | A kind of injection mold with Vacuuming structure |
| CN211251199U (en) * | 2019-06-04 | 2020-08-14 | 江苏双马智能科技有限公司 | A evacuating device in mould for many caves thin wall plastic part injection mould |
| CN215151334U (en) * | 2021-03-18 | 2021-12-14 | 安徽工业大学 | Vacuum injection mold based on vacuumizing seal |
-
2021
- 2021-03-18 CN CN202110305233.2A patent/CN112776278A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202480334U (en) * | 2012-04-01 | 2012-10-10 | 浙江浦江敏锐精密机械科技有限公司 | Mould chamber of mould vacuum-pumping system |
| CN208681975U (en) * | 2018-07-17 | 2019-04-02 | 广东烨嘉光电科技股份有限公司 | A kind of injection mold with Vacuuming structure |
| CN211251199U (en) * | 2019-06-04 | 2020-08-14 | 江苏双马智能科技有限公司 | A evacuating device in mould for many caves thin wall plastic part injection mould |
| CN215151334U (en) * | 2021-03-18 | 2021-12-14 | 安徽工业大学 | Vacuum injection mold based on vacuumizing seal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114193717A (en) * | 2022-02-17 | 2022-03-18 | 广东腾业科技有限公司 | Injection mold and injection method for daily chemical product packaging bottle |
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